@article{Sierek2008, author = {Sierek, Karl}, title = {"Architektur in Bewegung" : zur Entr{\"a}umlichung urbaner Orte durch Medien- und Lichtfassaden}, doi = {10.25643/bauhaus-universitaet.1312}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080729-13846}, year = {2008}, abstract = {Wissenschaftliches Kolloquium vom 19. bis 22. April 2007 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚Die Realit{\"a}t des Imagin{\"a}ren. Architektur und das digitale Bild'}, subject = {Architektur}, language = {de} } @article{Wirth1997, author = {Wirth, Hermann}, title = {"Auch Schandmale sind denkmalwert" : zum Umgang mit baulich-r{\"a}umlichen Sachzeugen technischer und technologischer Fehlorientierung}, doi = {10.25643/bauhaus-universitaet.1186}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-11866}, year = {1997}, abstract = {Wissenschaftliches Kolloquium vom 27. bis 30. Juni 1996 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚Techno-Fiction. Zur Kritik der technologischen Utopien'}, subject = {Architektur}, language = {de} } @article{Schulze1983, author = {Schulze, Ingrid}, title = {"Burg" und Bauhaus : zum Schaffen von Paul Thiersch, Erwin Hahs und Gustav Weidanz}, doi = {10.25643/bauhaus-universitaet.939}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-9397}, year = {1983}, abstract = {Wissenschaftliches Kolloquium vom 5. bis 7. Juli 1983 in Weimar an der Hochschule f{\"u}r Architektur und Bauwesen zum Thema: 'Das Bauhauserbe und die gegenw{\"a}rtige Entwicklung der Architektur : zum 100. Geburtstag von Walter Gropius'}, subject = {Thiersch}, language = {de} } @inproceedings{Bannwart1997, author = {Bannwart, E.}, title = {"CyberCity" - die Stadt im Kopf}, doi = {10.25643/bauhaus-universitaet.424}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4247}, year = {1997}, abstract = {>CyberCity< ist ein Konzept, das durch ein virtuelles Abbild der r{\"a}umlichen Realit{\"a}t einer Stadt (Berlin) eine uns bekannte Wahrnehmungsumgebung als Orientierungs- und Navigationserleichterung bereitstellt, um {\"u}ber diesen virtuellen Browser m{\"o}glichst schnell und anschaulich an eine gew{\"u}nschte Information zu kommen. Dieses Umgebungsmodell ist auch als Simulationsmodell f{\"u}r die Visualisierung stadtr{\"a}umlicher Beurteilungen neuer Projekte, verkehrstechnischer Massnahmen und {\"o}kologischer Belastungen geeignet. Insbesondere ist es als Orientierungsumgebung f{\"u}r die Telepr{\"a}senz {\"u}ber die Kommunikationsnetze gedacht, die {\"u}ber die virtuellen Repr{\"a}sentanten (Avatare) eine besondere gesellschaftliche Brisanz erh{\"a}lt.}, subject = {Stadtplanung}, language = {de} } @article{Schwarz2008, author = {Schwarz, Ullrich}, title = {"Das echt-absolut Reelle" (Novalis) : {\"U}berlegungen zu einer reflexiven {\"a}sthetischen Moderne}, doi = {10.25643/bauhaus-universitaet.1308}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080729-13805}, year = {2008}, abstract = {Wissenschaftliches Kolloquium vom 19. bis 22. April 2007 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚Die Realit{\"a}t des Imagin{\"a}ren. Architektur und das digitale Bild'}, subject = {Architektur}, language = {de} } @phdthesis{Everts, author = {Everts, Lotte}, title = {"Hey! I'm an Angel!" Zum Verh{\"a}ltnis von Medium, Subjekt und Wirklichkeit in Eija-Liisa Ahtilas Videoinstallationen}, doi = {10.25643/bauhaus-universitaet.3947}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190730-39471}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {229}, abstract = {Die Dissertation „Hey! I'm an Angel! Zum Verh{\"a}ltnis von Medium, Subjekt und Wirklichkeit in Eija-Liisa Ahtilas Videoinstallationen" untersucht in der Hauptsache vier zentrale Videoinstallationen Ahtilas aus den Jahren 1995 bis 2014. Grundlegend ist die These, dass Ahtilas Arbeiten nicht, wie bisher angenommen, in den Kontext einer medien-, erkenntnis- und subjektkritischen Videokunst einzuordnen sind. Stattdessen werden sie als mediale Vehikel intersubjektiv gepr{\"a}gter Wirklichkeitserfahrungen f{\"u}r das Subjekt bereitgestellt: Entgegen dem aktuellen Forschungsstand arbeitet sich Ahtila nicht an der Kritik des Mediums Film/Video ab, das einen wirklichkeitsverf{\"a}lschenden oder -ersetzenden Einfluss auf das manipulierte Subjekt nimmt. Vielmehr nutzt die K{\"u}nstlerin das Potenzial des Mediums Film/Video aus, um einem relativ stabilen Subjekt die Wirklichkeitserfahrungen Anderer zu {\"o}ffnen und auf diese Weise seinen Erfahrungshorizont zu erweitern. Der systematische Schwerpunkt der Arbeit liegt erstens darauf, ein sich durch Ahtilas bisheriges Schaffen ziehendes ‚Ziel' der Integration der Betrachterin in eine intersubjektive Erfahrungssph{\"a}re nachvollziehbar zu machen. Hierf{\"u}r wird insbesondere eine Perspektive auf die fr{\"u}hen Arbeiten entwickelt, in der die Br{\"u}che in Ahtila Arbeiten integrative statt distanzierende Wirkung haben. Zweitens wird in eingehenden Analysen der Wandel verst{\"a}ndlich, der sich zwischen Ahtilas fr{\"u}her Schaffensphase (1995 - 2002) und der aktuellen Schaffensphase (seit 2010) hinsichtlich der Art und Weise vollzieht, wie diese Integration gelingt. Es zeigt sich, dass der Einstieg in die intersubjektiv gepr{\"a}gten Erfahrungssph{\"a}ren in der fr{\"u}hen Phase {\"a}sthetisch konstituiert ist. Mit der aktuellen Schaffensphase werden hingegen allt{\"a}gliche Formen der Empathie und Mimesis zentral, sowie deren leibliche Konsequenzen f{\"u}r die Betrachterin. Drittens wird eine zunehmende pragmatische Tendenz darin deutlich, die Integration der Betrachterin in die Erfahrungen Anderer zu erm{\"o}glichen. Dies wird vor dem Hintergrund eines allgemeinen pragmatischen Zuges aktueller zeitgeistiger Bewegungen erl{\"a}utert. Viertens wird gezeigt, dass Ahtilas Arbeiten auf der Annahme einer Kontinuit{\"a}t in gewisser Hinsicht von der außerfilmischen Wirklichkeit in die filmische Fiktion hinein basieren, sowie auf dem Verst{\"a}ndnis filmischer Fiktionen als virtuelle Weltfassungen. Ahtila fragt auf der Grundlage dieses Verst{\"a}ndnisses filmischer Fiktion nicht nach der Wahrheit dieser Fiktion als These {\"u}ber die Wirklichkeit, wie es dem Forschungskanon {\"u}ber die K{\"u}nstlerin zu entnehmen ist. Sondern nach der Wirksamkeit der filmischen Fiktion f{\"u}r die Wirklichkeit.}, subject = {Videokunst}, language = {de} } @phdthesis{Smirnova, author = {Smirnova, Elena}, title = {"Kennst du das Land, wo bl{\"u}ht Oranienbaum?" - A Case Study on Strategic and Territorial Planning in St. Petersburg (Russia)}, doi = {10.25643/bauhaus-universitaet.3255}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170711-32556}, school = {Bauhaus-Universit{\"a}t Weimar}, abstract = {The research examines the system of strategic and territorial planning of St. Petersburg focusing on Lomonosov (Oranienbaum) as its case study. The study provides the analysis of the planning documentation developed for the city in the post-Soviet period. In particular, it elaborates on the currently enforced Strategy of Economic and Social Development of St. Petersburg-2030 (2014) and the City General Plan (2005), discussing the aspects of their development and implementation, as well as complex interrelation. Thereby, peculiarities of the spatial development of the St. Petersburg agglomeration are also investigated, elaborating on the state policy on agglomerations, historic development of St. Petersburg and relations with the Leningrad Region, governance and imbalances of the St. Petersburg spatial development, including proposed development scenarios. Consequently, the study employs a highly indicative case of the Lomonosov town municipal unit aiming to illustrate the practical implementation of administrative, territorial and strategic policies in a given context within a system of the state planning adopted in St. Petersburg, in particular, taking into consideration recently proclaimed necessity for the transition to a polycentric city model following an innovative scenario for the socioeconomic and spatial development. In particular, Lomonosov (Oranienbaum) is explored egarding its current socio-economic situation and development scenarios: industrial site and cultural tourism. The Oranienbaum museum and nature-reserve is also thoroughly assessed with regard to its cultural tourism potential. Finally, the urban environment of Lomonosov (Oranienbaum) is comprehensively scrutinized in terms of its historic development, residential housing typology, UNESCO World Heritage preservation and local urban heritage. In conclusion, the data on Lomonosov present in the St. Petersburg strategic and territorial planning documents is provided.}, subject = {Lomonossow}, language = {en} } @article{SimonRitz, author = {Simon-Ritz, Frank}, title = {"Kultur ist Reichtum an Problemen": Wie sich der Kultur-Begriff der UNESCO an Egon Friedell ann{\"a}herte}, series = {Palmbaum: Literarisches Journal aus Th{\"u}ringen}, volume = {2023}, journal = {Palmbaum: Literarisches Journal aus Th{\"u}ringen}, number = {Heft 1}, publisher = {Quartus Verlag}, address = {Bucha bei Jena}, doi = {10.25643/bauhaus-universitaet.4952}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230411-49524}, pages = {4}, abstract = {Der in H. 1/2023 erschienene Essay f{\"u}hrt Gedanken einer in H. 1/2022 des "Palmbaum" erschienene Betrachtung (https://doi.org/10.25643/bauhaus-universitaet.4628) weiter. Im Zentrum stehen dabei die Bem{\"u}hungen der UNESCO um das immaterielle Kulturerbe.}, subject = {UNESCO}, language = {de} } @article{KoebPollak1997, author = {K{\"o}b, Roland and Pollak, Sabine}, title = {"LUSTration" - operative Instrumente gegen den Mythos Fortschritt}, doi = {10.25643/bauhaus-universitaet.1189}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-11898}, year = {1997}, abstract = {Wissenschaftliches Kolloquium vom 27. bis 30. Juni 1996 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚Techno-Fiction. Zur Kritik der technologischen Utopien'}, subject = {Architektur}, language = {de} } @inproceedings{BerbigMenzelEisenblaetter2003, author = {Berbig, Torsten and Menzel, Karsten and Eisenbl{\"a}tter, Karin}, title = {"Mobile Computing" - Anforderungen \& Einf{\"u}hrungsstratgie aus Sicht der Baupraxis}, doi = {10.25643/bauhaus-universitaet.294}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2948}, year = {2003}, abstract = {Die Sicherung der Wettbewerbsf{\"a}higkeit im Bereich des Bauwesens, insbesondere kleinerer und mittelst{\"a}ndischer Betriebe erfordert ein aktives Handeln als Antwort auf die sich {\"a}ndernde Wettbewerbssituation. Einen wesentlichen Wettbewerbsvorteil k{\"o}nnen kleine unternehmerische Einheiten durch h{\"o}here Flexibilit{\"a}t, schnelle Reaktion auf Kundenw{\"u}nsche oder aktuelle Situationen auf der Baustelle und Marktn{\"a}he erreichen. Dazu ist es n{\"o}tig, die Informations- und Kommunikationsstr{\"o}me durch Einsatz standardisierter und kosteng{\"u}nstiger Hard- und Software wie z.B. Handhelds zu unterst{\"u}tzen und insbesondere die existierenden Hindernisse im Informationsfluss zwischen Baustelle und B{\"u}ro zu beseitigen. Am Beispiel der Projekte >IuK - SystemBau< und >eSharing< wird eine Einf{\"u}hrungsstrategie f{\"u}r >Mobile Computing< in kleinen unternehmerischen Einheiten des Bauwesens (KMU) basierend auf einer umfangreichen Anforderungsanalyse vorgestellt. Folgende Aspekte sollen beschrieben werden: durchg{\"a}ngiger Einsatz der Technik unter Beachtung der verschiedenen Qualifikationsniveaus, Einf{\"u}hrungsunterst{\"u}tzung durch Schulungen, Prozessanalyse und m{\"o}gliche Integration in bestehende Software-Umgebungen sowie Feldtests.}, subject = {Bauablauf / Ablaufplanung}, language = {de} } @misc{Rahn2007, type = {Master Thesis}, author = {Rahn, Andre}, title = {"Monitoring an Br{\"u}ckenkappen mit Tellerankern"}, doi = {10.25643/bauhaus-universitaet.1274}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080307-13431}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2007}, abstract = {Br{\"u}ckenkappen gew{\"a}hrleisten die Trennung der Verkehrsr{\"a}ume Fahrbahn und Gehweg und m{\"u}ssen aufgrund ihrer Anordnung im Querschnitt Schutz- und Leiteinrichtungen aufnehmen. Zur Verankerung der Br{\"u}ckenkappen am {\"U}berbau werden je nach Erfordernissen Anschlussbewehrung und / oder Telleranker angeordnet. Die vorliegende Arbeit analysiert grundlegende M{\"o}glichkeiten zur messtechnischen Untersuchung von Br{\"u}ckenkappen bei Anwendung von Tellerankern. Dabei werden die theoretische und konstruktiven Grundlagen der Kappenausbildung betrachtet. Außerdem werden die Zusammenh{\"a}nge zwischen den auftretenden Einwirkungen und deren Auswirkungen auf Br{\"u}ckenkappen betrachtet. Darauf aufbauend werden Kennwerte zur Ermittlung der Beanspruchung in den Kappen und den Tellerankern abgeleitet und hinsichtlich der messtechnischen Erfassung und Auswertung der Messdaten analysiert.}, subject = {Br{\"u}cke}, language = {de} } @article{Brake1990, author = {Brake, Klaus}, title = {"Neue Technologien" - Auswirkungen im Bereich Arbeit, Sozialstruktur und Umwelt in ihren Einfl{\"u}ssen auf die Territorialstruktur}, doi = {10.25643/bauhaus-universitaet.1061}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-10611}, year = {1990}, abstract = {Wissenschaftliches Kolloquium vom 27. bis 30. Juni 1989 in Weimar an der Hochschule f{\"u}r Architektur und Bauwesen zum Thema: ‚Produktivkraftentwicklung und Umweltgestaltung. Sozialer und wissenschaftlich-technischer Fortschritt in ihren Auswirkungen auf Architektur und industrielle Formgestaltung in unserer Zeit. Zum 100. Geburtstag von Hannes Meyer'}, subject = {Regionalstruktur}, language = {de} } @article{Baltzer2003, author = {Baltzer, Nanni}, title = {"No dobbiamo creare (...) un'arte dei nostri tempi, un'arte fascista" (Mussolini) : Fotografie und Architektur im Faschismus}, doi = {10.25643/bauhaus-universitaet.1264}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080304-13320}, year = {2003}, abstract = {Wissenschaftliches Kolloquium vom 24. bis 27. April 2003 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚MediumArchitektur - Zur Krise der Vermittlung'}, subject = {Faschismus}, language = {de} } @article{Pratschke2008, author = {Pratschke, Margarete}, title = {"Overlapping Windows" : Architektonische Raumkonzepte als Vorbilder des digitalen Bildraums grafischer Benutzeroberfl{\"a}chen}, doi = {10.25643/bauhaus-universitaet.1328}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080814-14025}, year = {2008}, abstract = {Wissenschaftliches Kolloquium vom 19. bis 22. April 2007 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚Die Realit{\"a}t des Imagin{\"a}ren. Architektur und das digitale Bild'}, subject = {Architektur}, language = {de} } @article{Weckherlin2003, author = {Weckherlin, Gernot}, title = {"This book is not literature - it is a practical manual ..." : diskursive und nicht-diskursive Praktiken in der Architektur}, doi = {10.25643/bauhaus-universitaet.1271}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080304-13397}, year = {2003}, abstract = {Wissenschaftliches Kolloquium vom 24. bis 27. April 2003 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚MediumArchitektur - Zur Krise der Vermittlung'}, subject = {Architekturtheorie}, language = {de} } @phdthesis{Ma2006, author = {Ma, Hang}, title = {"Villages" in Shenzhen- Persistence and Transformation of an Old Social System in an Emerging Megacity}, doi = {10.25643/bauhaus-universitaet.771}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20060806-8094}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2006}, abstract = {In the history of 'villages' in Shenzhen, rich traditional cultural resources that are directly related to the folk life in urban corporate community still exist today, synchronously agricultural economy of urban corporate community is transformed into joint-stock economy, and natural villages are transformed into 'heterogeneous' space of city. The most significant fact in the modern social transition is that modern societies have surpassed traditional societies, and cities have surpassed the country. Weber, Durkheim, T{\"o}nnies, Simmel and others devoted themselves to cultivating the essence of social transition. The most influential theory to observe and analyze it is the two-tiered approach of ideal type. T{\"o}nnies made distinction between 'Gemeinschaft and Gesellschaft', Durkheim distinguished 'mechanical solidarity and organic solidarity', and Redfield analyzed 'folk society and urban society'. In those classical theories, the former transit to the later is considered to be a general rule of transition from traditional society to modern society, and from traditional community to modern community. However, ever since Redfield used the dependent relationship and interactive framework of 'great tradition' and 'little tradition' to explain various complicated phenomena in the transition from tradition to modern in 1950s, he suggested that a folk-urban continuum can be formed in the transition from folk society to urban society. 'Both terms, 'city' and 'country', are not and have never been limited or restricted to their obvious denotations: 'city' is not and has never been only urban. As a category it always encompasses (includes, embodies, embraces) itself and its opposite, the country' (Hassenpflug 2002, 46). Generally, social groups and culture characterized by weak 'potential' will take their own 'little tradition' as 'bridge' and agency, in order to enter or melt themselves into a 'great tradition' that embodies great 'potential' to seek for space to live and develop. There are many different types of transitions that villagers enter and get melt into 'great tradition' through their individual 'little tradition'. There are exploration and development of traditional resources in 'segmentation', such as the frequent relation between a great flow of peasants to cities and the network of kinship, and of earthbound relations; alternatively, there are assistances and utilization of resources of a whole corporate network, such as the traditional corporate community's organization of local resources during the process of non-agriculturization of villages; and 'villages' in Shenzhen is of the latter situation. The following conclusion can be made based on the above analyses: urban corporate community formed in the process of non-agricultural development and urbanization is an organizing dependency on which villagers melt into city and adapt to urban life. The unique inner-structure and function determine that comparing with other organizations, it has a better performance, efficiency and more humanity care. Firstly, corporate community which is re-organized in the non-agricultural process currently is the only and the most effective organizational resources that can be utilized and has significant meanings in protecting villagers' interest and benefit; secondly, in the short term, other approaches do not have the advantage and the effect as urban corporate community has on the focusing degree of public affairs in the comprehensive urbanization process; thirdly, the 'new' key connotation of urban corporate community, including its community management functions, is the main reason for which such community has the rationality of being; fourthly, urban corporate community will inevitably face many problems in the urbanization due to its inner fixed characteristics (lack of external support), but to a certain degree it has the ability to self-repair and problem solving under the precondition that, the government and society have a fair, impersonal view of 'villages', and base on this view providing multi-supports, especially providing rational system arrangement and policy supports. Consequently, in order to preserve and protect social system and cultural heritage within the 'villages', and gradually make the coordinative development of 'great tradition' represented by cities and of 'little tradition' represented by 'villages', 'soft reconstruction' rather than 'hard reconstruction' should be adopted by the government, during the recent reconstruction of 'villages' in Shenzhen.}, subject = {China}, language = {en} } @article{Wirth1993, author = {Wirth, Hermann}, title = {"Wie das Regime, so seine Bauten" : die Koinzidenz von Machtstruktur und Baustruktur}, doi = {10.25643/bauhaus-universitaet.1141}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-11415}, year = {1993}, abstract = {Wissenschaftliches Kolloquium vom 18. bis 21. Juni 1992 in Weimar an der Hochschule f{\"u}r Architektur und Bauwesen zum Thema: ‚Architektur und Macht'}, subject = {Architektur}, language = {de} } @techreport{GrossOemig2006, author = {Gross, Tom and Oemig, Christoph}, title = {'Sorry, Pal---What I See is Usually Not What You Get!': The Role of Reciprocity in Information Disclosure}, doi = {10.25643/bauhaus-universitaet.747}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7474}, year = {2006}, abstract = {For efficient distant cooperation the members of workgroups need information about each other. This need for information disclosure often conflicts with the users' wishes for privacy. In the literature often reciprocity is suggested as a solution to this trade-off. Yet, this conception of reciprocity and its enforcement by systems does not match reality. In this paper we present our study's major findings investigating the role of reciprocity among which we found that participants greatly disregarded the above conception. Additionally we discuss their significant implications for the design of systems seeking to disclose personal information.}, subject = {Angewandte Informatik}, language = {en} } @article{Hartmann, author = {Hartmann, Frank}, title = {'Unter die Haut der Welt'. Philosophical Toys, Metatechnik und transanthropologischer Raum}, series = {Zeitschrift f{\"u}r Medien- und Kulturforschung}, journal = {Zeitschrift f{\"u}r Medien- und Kulturforschung}, number = {2010,2}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20140819-22781}, pages = {95 -- 110}, abstract = {Nach dem aufgeregten Palaver um den Computer als 'Medium' und die akademische Begleitrhetorik zum Internet wird erneut die Frage nach der Leistung von Medienphilosophie gestellt - in diesem Beitrag als medienanthropologische Vergewisserung: welche technischen {\"U}berschreitungen definieren das Neue unserer Lage?}, subject = {Philosophie}, language = {de} } @article{Siegert2003, author = {Siegert, Bernhard}, title = {(Nicht) Am Ort : zum Raster als Kulturtechnik}, doi = {10.25643/bauhaus-universitaet.1237}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20080227-13049}, series = {Thesis // Bauhaus-Universit{\~A}\it ; Jg. 49, 2003}, number = {Heft 3}, year = {2003}, abstract = {Wissenschaftliches Kolloquium vom 24. bis 27. April 2003 in Weimar an der Bauhaus-Universit{\"a}t zum Thema: ‚MediumArchitektur - Zur Krise der Vermittlung'}, subject = {Architektur}, language = {de} } @inproceedings{StahrRuthWolkowicz, author = {Stahr, Alexander and Ruth, J{\"u}rgen and Wolkowicz, Christian}, title = {... WITHOUT RIGHT ANGLE.}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3024}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30248}, pages = {8}, abstract = {Currently sculptural design is one of the most discussed themes in architecture. Due to their light weight, easy transportation and assembly, as well as an almost unlimited structural variety, parameterised spatial structures are excellently suited for constructive realisation of free formed claddings. They subdivide the continuous surface into a structure of small sized nodes, straight members and plane glass panels. Thus they provide an opportunity to realise arbitrary double-curved claddings with a high degree of transparency, using industrial semi-finished products (steel sections, flat glass). Digital design strategies and a huge number of similar looking but in detail unique structural members demand a continuous digital project handling. Within a research project, named MYLOMESH, a free-formed spatial structure was designed, constructed, fabricated and assembled. All required steps were carried out based on digital data. Different digital connections (scripts) between varying software tools, which are usually not used in the planning process of buildings, were created. They allow a completely digital workflow. The project, its design, meshing, constructive detailing and the above-mentioned scripts are described in this paper.}, subject = {Architektur }, language = {en} } @incollection{Manning, author = {Manning, Erin}, title = {10 Propositionen f{\"u}r eine radikale P{\"a}dagogik, oder: Wie den Wert neu denken?}, series = {Experimente lernen, Techniken tauschen. Ein spekulatives Handbuch}, booktitle = {Experimente lernen, Techniken tauschen. Ein spekulatives Handbuch}, publisher = {Nocturne}, address = {Berlin und Weimar}, doi = {10.25643/bauhaus-universitaet.4266}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20201008-42660}, publisher = {Bauhaus-Universit{\"a}t Weimar}, pages = {121 -- 138}, abstract = {Radikale P{\"a}dagogik richtet ihre Aufmerksamkeit sowohl auf die allt{\"a}glichen Techniken p{\"a}dagogischer Praxis - Techniken zur Aktivierung eines Begegnungsraumes, Techniken, sich um die Arbeit und einander zu k{\"u}mmern, Techniken des kultur{\"u}bergreifenden Zuh{\"o}rens, Techniken, sich dem Mehr-als zuzuwenden - als auch auf Techniken zum »{\"U}berschreiten der Schwelle«. Das {\"U}berschreiten der Schwelle h{\"a}ngt mit der Art und Weise der Anpassung (accommodation) zusammen, die es erm{\"o}glicht, das Lernen in all seinen Erscheinungsformen wertzusch{\"a}tzen.}, subject = {P{\"a}dagogik}, language = {de} } @inproceedings{OPUS4-1369, title = {2. Fachtagung "Sicherheit auf Baustellen" : mit einem Spezialteil von Beitr{\"a}gen zu Qualit{\"a}t und Sicherheit auf Baustellen und im Schweißbetrieb anl{\"a}sslich des Ausscheidens von Herrn Prof. Dr.-Ing. habil. Karl-Dieter R{\"o}benack aus dem aktiven Berufsleben}, editor = {Professur Baubetrieb und Bauverfahren,}, doi = {10.25643/bauhaus-universitaet.1369}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20081126-14511}, year = {2001}, abstract = {Beitr{\"a}ge zur 2. Fachtagung „Sicherheit auf Baustellen" am Dienstag, dem 20. M{\"a}rz 2001 in Weimar an der Fakult{\"a}t Bauingenieurwesen, Professur Baubetrieb und Bauverfahren der Bauhaus-Universit{\"a}t Weimar. Der Tagungsband enth{\"a}lt einen Spezialteil „Qualit{\"a}t und Sicherheit auf Baustellen und im Schweißbetrieb" anl{\"a}sslich des Ausscheidens von Herrn Prof. Dr.-Ing. habil. Karl-Dieter R{\"o}benack aus dem aktiven Berufsleben.}, subject = {Weimar / Bauhaus-Universit{\"a}t / Professur Baubetrieb und Bauverfahren}, language = {de} } @phdthesis{Klose2009, author = {Klose, Alexander}, title = {20 Fuß {\"A}quivalent Einheit. Die Herrschaft der Containerisierung}, doi = {10.25643/bauhaus-universitaet.1426}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20100805-15146}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2009}, abstract = {Container sind nicht nur das bei weitem wichtigste Transportmittel f{\"u}r die allermeisten Waren, mit denen wir tagt{\"a}glich zu tun haben. Container sind, vielleicht wegen ihrer schlichten, klaren Ausdruckskraft, zu dem Symbol der Globalisierung geworden und vieler Ph{\"a}nomene, die man mit dieser Entwicklung in Zusammenhang bringt. Dabei handelt es sich um ein durch und durch ambivalentes Symbol. Container stehen genauso f{\"u}r die beeindruckende Dynamik des modernen Kapitalismus und den ihm trotz aller Krisen zugrunde liegenden Optimismus wie f{\"u}r die {\"A}ngste und Einw{\"a}nde dagegen; gegen die Indifferenz eines rein auf Optimierung ausgelegten logistischen Organisationshandelns und gegen die zwangsweise Ann{\"a}herung und Angleichung ehedem entfernter Weltgegenden durch die exponentielle Vermehrung der Transport- und Kommunikationsvorg{\"a}nge. Der Schwerpunkt der Arbeit liegt im 20. Jahrhundert. Sie untersucht die (Vor)Geschichte und Theorie des Containers als moderner Kulturtechnik und zentralem Bestandteil eines weltumspannenden logistischen Systems. Und sie zeigt ihn als Element eines Denkens und Organisationshandelns in modularen, beweglichen Raumeinheiten, das sich auch auf viele andere Bereiche außerhalb des Warentransports {\"u}bertragen l{\"a}sst. Daf{\"u}r beschreibt und analysiert sie "Containersituationen" in so unterschiedlichen Feldern wie Handel und Transport, Architektur, Wissenschaften, Kunst und den sozialen Realit{\"a}ten von Migranten und Seeleuten.}, subject = {Globalisierung}, language = {de} } @inproceedings{HollermannMelzner, author = {Hollermann, Sebastian and Melzner, J{\"u}rgen}, title = {24. Assistententreffen der Bereiche Bauwirtschaft, Baubetrieb und Bauverfahrenstechnik}, editor = {Hollermann, Sebastian and Melzner, J{\"u}rgen}, address = {Weimar}, doi = {10.25643/bauhaus-universitaet.1937}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20130523-19371}, abstract = {Tagungsband - 24. Assistententreffen der Bereiche Bauwirtschaft, Baubetrieb und Bauverfahrenstechnik 10.-12.Juli 2013 Weimar}, subject = {Baubetrieb}, language = {de} } @inproceedings{OPUS4-1368, title = {3. Fachtagung "Sicherheit auf Baustellen"}, editor = {Professur Baubetrieb und Bauverfahren,}, doi = {10.25643/bauhaus-universitaet.1368}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20081126-14509}, year = {2003}, abstract = {Beitr{\"a}ge zur 3. Fachtagung „Sicherheit auf Baustellen" am Dienstag, dem 11. M{\"a}rz 2003 in Weimar an der Professur Baubetrieb und Bauverfahren der Bauhaus-Universit{\"a}t Weimar.}, subject = {Weimar / Bauhaus-Universit{\"a}t / Professur Baubetrieb und Bauverfahren}, language = {de} } @inproceedings{OPUS4-3785, title = {30. Forum Bauinformatik}, editor = {Steiner, Maria and Theiler, Michael and Mirboland, Mahsa}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180917-37854}, pages = {424}, abstract = {Die Bauhaus-Universit{\"a}t Weimar ist seit langer Zeit mit dem Forum Bauinformatik eng verbunden. So wurde die Veranstaltung 1989 hier durch den Arbeitskreis Bauinformatik ins Leben gerufen und auch das 10. und 18. Forum Bauinformatik (1998 bzw. 2006) fand in Weimar statt. In diesem Jahr freuen wir uns daher besonders, das 30. Jubil{\"a}um an der Bauhaus-Universit{\"a}t Weimar ausrichten zu d{\"u}rfen und viele interessierte Wissenschaftler und Wissenschaftlerinnen aus dem Bereich der Bauinformatik in Weimar willkommen zu heißen. Das Forum Bauinformatik hat sich l{\"a}ngst zu einem festen Bestandteil der Bauinformatik im deutschsprachigen Raum entwickelt. Dabei steht es traditionsgem{\"a}ß unter dem Motto „von jungen Forschenden f{\"u}r junge Forschende", wodurch insbesondere Nachwuchswissenschaftlerinnen und ‑wissenschaftlern die M{\"o}glichkeit geboten wird, ihre Forschungsarbeiten zu pr{\"a}sentieren, Problemstellungen fachspezifisch zu diskutieren und sich {\"u}ber den neuesten Stand der Forschung zu informieren. Zudem wird eine ausgezeichnete Gelegenheit geboten, in die wissenschaftliche Gemeinschaft im Bereich der Bauinformatik einzusteigen und Kontakte mit anderen Forschenden zu kn{\"u}pfen. In diesem Jahr erhielten wir 49 interessante und qualitativ hochwertige Beitr{\"a}ge vor allem in den Themenbereichen Simulation, Modellierung, Informationsverwaltung, Geoinformatik, Structural Health Monitoring, Visualisierung, Verkehrssimulation und Optimierung. Daf{\"u}r m{\"o}chten wir uns ganz besonders bei allen Autoren, Co-Autoren und Reviewern bedanken, die durch ihr Engagement das diesj{\"a}hrige Forum Bauinformatik erst m{\"o}glich gemacht haben. Wir danken zudem Professor Große und Professor D{\´i}az f{\"u}r die Unterst{\"u}tzung bei der Auswahl der Beitr{\"a}ge f{\"u}r die Best Paper Awards. Ein herzliches Dankesch{\"o}n geht an die Kollegen an der Professur Informatik im Bauwesen der Bauhaus-Universit{\"a}t Weimar f{\"u}r die organisatorische, technische und beratende Unterst{\"u}tzung w{\"a}hrend der Planung der Veranstaltung.}, subject = {Bauinformatik}, language = {de} } @phdthesis{Kunert, author = {Kunert, Andr{\´e}}, title = {3D Interaction Techniques in Multi-User Virtual Reality : towards scalable templates and implementation patterns for cooperative interfaces}, doi = {10.25643/bauhaus-universitaet.4296}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20201204-42962}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {147}, abstract = {Multi-user projection systems provide a coherent 3D interaction space for multiple co-located users that facilitates mutual awareness, full-body interaction, and the coordination of activities. The users perceive the shared scene from their respective viewpoints and can directly interact with the 3D content. This thesis reports on novel interaction patterns for collaborative 3D interaction for local and distributed user groups based on such multi-user projection environments. A particular focus of our developments lies in the provision of multiple independent interaction territories in our workspaces and their tight integration into collaborative workflows. The motivation for such multi-focus workspaces is grounded in research on social cooperation patterns, specifically in the requirement for supporting phases of loose and tight collaboration and the emergence of dedicated orking territories for private usage and public exchange. We realized independent interaction territories in the form of handheld virtual viewing windows and multiple co-located hardware displays in a joint workspace. They provide independent views of a shared virtual environment and serve as access points for the exploration and manipulation of the 3D content. Their tight integration into our workspace supports fluent transitions between individual work and joint user engagement. The different affordances of various displays in an exemplary workspace consisting of a large 3D wall, a 3D tabletop, and handheld virtual viewing windows, promote different usage scenarios, for instance for views from an egocentric perspective, miniature scene representations, close-up views, or storage and transfer areas. This work shows that this versatile workspace can make the cooperation of multiple people in joint tasks more effective, e.g. by parallelizing activities, distributing subtasks, and providing mutual support. In order to create, manage, and share virtual viewing windows, this thesis presents the interaction technique of Photoportals, a tangible interface based on the metaphor of digital photography. They serve as configurable viewing territories and enable the individual examination of scene details as well as the immediate sharing of the prepared views. Photoportals are specifically designed to complement other interface facets and provide extended functionality for scene navigation, object manipulation, and for the creation of temporal recordings of activities in the virtual scene. A further objective of this work is the realization of a coherent interaction space for direct 3D input across the independent interaction territories in multi-display setups. This requires the simultaneous consideration of user input in several potential interaction windows as well as configurable disambiguation schemes for the implicit selection of distinct interaction contexts. We generalized the required implementation structures into a high-level software pattern and demonstrated its versatility by means of various multi-context 3D interaction tools. Additionally, this work tackles specific problems related to group navigation in multiuser projection systems. Joint navigation of a collocated group of users can lead to unintentional collisions when passing narrow scene sections. In this context, we suggest various solutions that prevent individual collisions during group navigation and discuss their effect on the perceived integrity of the travel group and the 3D scene. For collaboration scenarios involving distributed user groups, we furthermore explored different configurations for joint and individual travel. Last but not least, this thesis provides detailed information and implementation templates for the realization of the proposed interaction techniques and collaborative workspaces in scenegraph-based VR systems. These contributions to the abstraction of specific interaction patterns, such as group navigation and multi-window interaction, facilitate their reuse in other virtual reality systems and their adaptation to further collaborative scenarios.}, subject = {Virtuelle Realit{\"a}t}, language = {en} } @article{KrebsBrueck1997, author = {Krebs, F. and Br{\"u}ck, E.}, title = {3D-Computergrafik und -animation als Instrument der Visualisierung im Bereich Entwurf und Denkmalpflege}, doi = {10.25643/bauhaus-universitaet.523}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5235}, year = {1997}, abstract = {Seit mehreren Jahren wird im Fachbereich Gestaltung, Studiengang Innenarchitektur 3D-Computergrafik und -animation in Lehrveranstaltungen ausgebildet und in Projekt- und Diplomarbeiten als Darstellungsmedium angewandt. Eine besondere Herausforderung stellen dabei die 3D-Visualisierungen von historischen Geb{\"a}uden dar. Mit den beiden nachfolgenden Beispielen soll der Einsatz und die curricularen Verkn{\"u}pfung der CA-Technologie mit Studienarbeiten und Projekten zum Thema >Denkmalpflege< aufgezeigt werden. Rekonstruktion und Visualisierung des ehemaligen >Jagdschlosses Platte< bei Wiesbaden. Mit Unterst{\"u}tzung einer Kunsthistorikerin wurde in einer Studienarbeit das im Krieg zerst{\"o}rte ehemalige Jagdschloß im Computer nachgebildet. Neben der Darstellung des Geb{\"a}ude{\"a}ußeren und des zentralen Innenbereiches wurde eine Animation {\"u}ber die Triangulierung der klassizistischen Geometrie erstellt. Umnutzung historischer Bausubstanz am Beispiel der ehemaligen Klostersanlage >Schiffenberg< bei Gießen. Im Rahmen einer Projektarbeit wurden mehrer Konzepte entwickelt, Entw{\"u}rfe erstellt und mittels Computeranimationen {\"o}ffentlich pr{\"a}sentiert. In Kooperation mit dem Studiengang Fernsehtechnik (FH-Wiesbaden) wurde von zwei Studenten eine Videodokumentation {\"u}ber den gesamten Projektverlauf erstellt. Neben dem Aufzeigen der Arbeitsprozesse und dem Vorstellen des Lehrkonzeptes f{\"u}r die curriculare Einbindung der CA-Technologie werden aktuelle Studienergebnisse anhand von Videoprojektionen vorgestellt.}, subject = {Architektur}, language = {de} } @inproceedings{CruzFalcaoMalonek, author = {Cruz, J. F. and Falc{\~a}o, M. Irene and Malonek, Helmuth Robert}, title = {3D-MAPPINGS AND THEIR APPROXIMATION BY SERIES OF POWERS OF A SMALL PARAMETER}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2940}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29406}, pages = {14}, abstract = {In classical complex function theory the geometric mapping property of conformality is closely linked with complex differentiability. In contrast to the planar case, in higher dimensions the set of conformal mappings is only the set of M{\"o}bius transformations. Unfortunately, the theory of generalized holomorphic functions (by historical reasons they are called monogenic functions) developed on the basis of Clifford algebras does not cover the set of M{\"o}bius transformations in higher dimensions, since M{\"o}bius transformations are not monogenic. But on the other side, monogenic functions are hypercomplex differentiable functions and the question arises if from this point of view they can still play a special role for other types of 3D-mappings, for instance, for quasi-conformal ones. On the occasion of the 16th IKM 3D-mapping methods based on the application of Bergman's reproducing kernel approach (BKM) have been discussed. Almost all authors working before that with BKM in the Clifford setting were only concerned with the general algebraic and functional analytic background which allows the explicit determination of the kernel in special situations. The main goal of the abovementioned contribution was the numerical experiment by using a Maple software specially developed for that purpose. Since BKM is only one of a great variety of concrete numerical methods developed for mapping problems, our goal is to present a complete different from BKM approach to 3D-mappings. In fact, it is an extension of ideas of L. V. Kantorovich to the 3-dimensional case by using reduced quaternions and some suitable series of powers of a small parameter. Whereas until now in the Clifford case of BKM the recovering of the mapping function itself and its relation to the monogenic kernel function is still an open problem, this approach avoids such difficulties and leads to an approximation by monogenic polynomials depending on that small parameter.}, subject = {Architektur }, language = {en} } @misc{Gundermann2005, type = {Master Thesis}, author = {Gundermann, Ralf}, title = {3D-Simulation des Temperaturfeldes und der Gef{\"u}geumwandlung bei einer Laserstrahlschweißung}, doi = {10.25643/bauhaus-universitaet.668}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6680}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2005}, abstract = {Das FEM-Programmsystem „SYSWELD" kommt f{\"u}r die Berechnung des Temperaturfeldes bei einer Laserstrahlschweißung zum Einsatz. Insbesondere sollen der Einfluss des Energieeintrages und die damit verbundene Gef{\"u}geumwandlung eines Feinkornbaustahles untersucht und Aussagen zur notwendigen Modellierungsgenauigkeit der Nahtgeometrie bzw. Netzverfeinerung getroffen werden. Im Einzelnen sind folgende Teilaufgaben zu l{\"o}sen: - ausf{\"u}hrliche Literaturrecherche zur numerischen Analyse von Schweißverbindungen insbesondere zu temperaturabh{\"a}ngigen Materialeigenschaften von Feinkornbaust{\"a}hlen, - Darstellung der W{\"a}rmequelle f{\"u}r das Laserstrahlschweißen, - Erprobung unterschiedlicher Netzvarianten f{\"u}r die FE-Analyse von instation{\"a}ren Temperaturfeldern, - Untersuchung zur Modellierungsgenauigkeit der Nahtgeometrie, - Parameterstudien zum Einfluss der Materialkennwerte und Gef{\"u}gekinetik auf das Temperaturfeld sowie das Gef{\"u}ge.}, subject = {Laserschweißen}, language = {de} } @inproceedings{OPUS4-1370, title = {4. Fachtagung "Sicherheit auf Baustellen" : Erfahrung - Arbeitsscherheit - Leistung}, editor = {Professur Baubetrieb und Bauverfahren,}, doi = {10.25643/bauhaus-universitaet.1370}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20081126-14528}, year = {2005}, abstract = {Beitr{\"a}ge zur 4. Fachtagung „Sicherheit auf Baustellen" am Dienstag, dem 22. M{\"a}rz 2005 in Weimar an der Fakult{\"a}t Bauingenieurwesen, Professur Baubetrieb und Bauverfahren der Bauhaus-Universit{\"a}t Weimar.}, subject = {Weimar / Bauhaus-Universit{\"a}t / Professur Baubetrieb und Bauverfahren}, language = {de} } @article{Groenwald1990, author = {Gr{\"o}nwald, Bernd}, title = {40 Jahre St{\"a}dtebau- und Architekturentwicklung in der DDR}, doi = {10.25643/bauhaus-universitaet.1096}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-10960}, year = {1990}, abstract = {Wissenschaftliches Kolloquium vom 27. bis 30. Juni 1989 in Weimar an der Hochschule f{\"u}r Architektur und Bauwesen zum Thema: ‚Produktivkraftentwicklung und Umweltgestaltung. Sozialer und wissenschaftlich-technischer Fortschritt in ihren Auswirkungen auf Architektur und industrielle Formgestaltung in unserer Zeit. Zum 100. Geburtstag von Hannes Meyer'}, subject = {Deutschland }, language = {de} } @book{BargstaedtRoebenack2000, author = {Bargst{\"a}dt, Hans-Joachim and R{\"o}benack, Karl-Dieter}, title = {45 Jahre Baubetrieb und Bauverfahren in Weimar}, isbn = {3-86068-126-5}, doi = {10.25643/bauhaus-universitaet.477}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4774}, year = {2000}, abstract = {Jubil{\"a}umsbrosch{\"u}re zum Tag des Baubetriebs >Prozesssteuerung-Projektleitung-Dienstleistung< am Freitag, dem 7. Juli 2000 in Weimar. Geleitwort des Rektors der Bauhaus-Universit{\"a}t Weimar 45 Jahre technologische Lehre und Forschung in Weimar Bauen im Jahr 2020 - Wohin ver{\"a}ndert sich Baubetrieb? Statistische {\"U}bersichten}, subject = {Bautechnik}, language = {de} } @inproceedings{BargstaedtSteinmetzgerIllertetal.2007, author = {Bargst{\"a}dt, Hans-Joachim and Steinmetzger, Rolf and Illert, Stephan and Steinberg, Kerstin and Geyer, Annett and Seifert, Wolfgang and Schul, Sebastian and Klingsporn, Karin}, title = {5. Fachtagung "Sicherheit auf Baustellen": Aus Unf{\"a}llen und Berufskrankheiten lernen - gesund arbeiten bis zur Rente}, organization = {Professur Baubetrieb und Bauverfahren}, doi = {10.25643/bauhaus-universitaet.805}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-8055}, year = {2007}, abstract = {Die aktuelle demografische Entwicklung bedingt offensichtlich auch Arbeiten in rauer Umgebung bis zur Rente mit 67, auch auf dem Bau. Das Thema liegt scheinbar nur am Rande des Baubetriebswesens. Doch obwohl es sozialpolitisch determiniert ist, hat es sehr konkret mit Gesundheitsschutz, Arbeitsschutz und Arbeitsgestaltung zu tun. Die f{\"u}nfte Fachtagung 'Sicherheit auf Baustellen' stellt sich der Diskussion, wie das Rentenalter gesund erreichbar ist, was alle am Arbeitsschutz Beteiligten schon heute und auch in Zukunft daf{\"u}r tun k{\"o}nnen, und hinterfragt kritisch, wie realistisch diese pauschale Forderung nach Arbeit bis 67 ist. Forderungen nach schlankeren Strukturen im Staat und das Streben nach Deregulierung haben auch zu Ver{\"a}nderungen in der Arbeitsschutzverwaltung des Freistaates Th{\"u}ringen gef{\"u}hrt, {\"u}ber die das Forum informiert.}, subject = {Bev{\"o}lkerungsentwicklung}, language = {de} } @inproceedings{Steinmetzger2007, author = {Steinmetzger, Rolf}, title = {5. Fachtagung Sicherheit auf Baustellen - Inhaltsverzeichnis}, doi = {10.25643/bauhaus-universitaet.836}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-8362}, year = {2007}, subject = {Bev{\"o}lkerungsentwicklung}, language = {de} } @book{OPUS4-1684, title = {50 Jahre Dissertationen an der Hochschule f{\"u}r Architektur und Bauwesen und der Bauhaus-Universit{\"a}t}, editor = {Simon-Ritz, Frank and Bauer, Kerstin}, publisher = {Verlag der Bauhaus-Universit{\"a}t}, address = {Weimar}, isbn = {3-86068-275-X}, doi = {10.25643/bauhaus-universitaet.1684}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120801-16849}, pages = {246}, abstract = {Diese Ver{\"o}ffentlichung dokumentiert {\"u}ber einen Zeitraum von 50 Jahren die an unserer Hochschule entstandenen Dissertationen, deren Zahl sich auf 1100 bel{\"a}uft. Damit werden ein wichtiger Teil der Hochschulgeschichte Weimars und zugleich ein Teil der Hochschulgeschichte der DDR aufgearbeitet. Die Bibliographie liefert Bausteine f{\"u}r eine Geschichte der Disziplinen und Fakult{\"a}ten an der Weimarer Hochschule und dar{\"u}ber hinaus f{\"u}r eine Sozialgeschichte der Wissenschaftler in Th{\"u}ringen. So hat z. B. eine Vielzahl der heute in leitender Stellung an der Universit{\"a}t T{\"a}tigen - sowohl Professoren als auch Mitarbeiter der Universit{\"a}tsverwaltung - in Weimar promoviert. Das l{\"a}sst sich auch ausdehnen auf Personen in f{\"u}hrenden wissenschaftlichen, politischen oder wirtschaftlichen Positionen in der Region oder im Ort. Hier k{\"o}nnte die vorliegende Bibliographie Anstoß f{\"u}r weitere Forschungen geben.}, subject = {Bauhaus-Universit{\"a}t}, language = {de} } @book{OPUS4-2541, title = {50 Jahre Dissertationen an der Hochschule f{\"u}r Architektur und Bauwesen und der Bauhaus-Universit{\"a}t Weimar}, editor = {Simon-Ritz, Frank and Bauer, Kerstin}, publisher = {Verlag der Bauhaus-Universit{\"a}t Weimar}, address = {Weimar}, isbn = {3-86068-275-X}, doi = {10.25643/bauhaus-universitaet.2541}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20160217-25414}, pages = {245}, abstract = {Diese Ver{\"o}ffentlichung dokumentiert {\"u}ber einen Zeitraum von 50 Jahren die an unserer Hochschule entstandenen Dissertationen, deren Zahl sich auf 1100 bel{\"a}uft. Damit werden ein wichtiger Teil der Hochschulgeschichte Weimars und zugleich ein Teil der Hochschulgeschichte der DDR aufgearbeitet. Die Bibliographie liefert Bausteine f{\"u}r eine Geschichte der Disziplinen und Fakult{\"a}ten an der Weimarer Hochschule und dar{\"u}ber hinaus f{\"u}r eine Sozialgeschichte der Wissenschaftler in Th{\"u}ringen. So hat z. B. eine Vielzahl der heute in leitender Stellung an der Universit{\"a}t T{\"a}tigen - sowohl Professoren als auch Mitarbeiter der Universit{\"a}tsverwaltung - in Weimar promoviert. Das l{\"a}sst sich auch ausdehnen auf Personen in f{\"u}hrenden wissenschaftlichen, politischen oder wirtschaftlichen Positionen in der Region oder im Ort. Hier k{\"o}nnte die vorliegende Bibliographie Anstoß f{\"u}r weitere Forschungen geben.}, subject = {Dissertation}, language = {de} } @phdthesis{Chen, author = {Chen, Na}, title = {A Balance between Ideals and Reality — Establishing and Evaluating a Resilient City Indicator System for Central Chinese Cities}, doi = {10.25643/bauhaus-universitaet.4030}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191121-40309}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {212}, abstract = {Recent years have seen a gradual shift in focus of international policies from a national and regional perspective to that of cities, a shift which is closely related to the rapid urbanization of developing countries. As revealed in the 2011 Revision of the World Urbanization Prospects published by the United Nations, 51\% of the global population (approximately 3.6 billion people) lives in cities. The report predicts that by 2050, the world's urban population will increase by 2.3 billion, making up 68\% of the population. The growth of urbanization in the next few decades is expected to primarily come from developing countries, one third of which will be in China and India. With rapid urbanization and the ongoing growth of mega cities, cities must become increasingly resilient and intelligent to cope with numerous challenges and crises like droughts and floods arising from extreme climate, destruction brought by severe natural disasters, and aggregated social contradictions resulting from economic crises. All cities face the urban development dynamics and uncertainties arising from these problems. Under such circumstances, cities are considered the critical path from crisis to prosperity, so scholars and organizations have proposed the construction of "resilient cities." On the one hand, this theory emphasizes cities' defenses and buffering capacity against disasters, crises and uncertainties, as well as recovery after destruction; on the other hand, it highlights the learning capacity of urban systems, identification of opportunities amid challenges, and maintenance of development vitality. Some scholars even believe that urban resilience is a powerful supplement to sustainable development. Hence, resilience assessment has become the latest and most important perspective for evaluating the development and crisis defense capacity of cities. Rather than a general abstract concept, urban resilience is a comprehensive measurement of a city's level of development. The dynamic development of problems is reflected through quantitative indicators and appraisal systems not only from the perspective of academic research, but also governmental policy, so as to scientifically guide development, and measure and compare cities' development levels. Although international scholars have proposed quantitative methods for urban resilience assessment, they are however insufficiently systematic and regionally adaptive for China's current urban development needs. On the basis of comparative study on European and North American resilient city theories, therefore, this paper puts forwards a theoretical framework for resilient city systems consistent with China's national conditions in light of economic development pressure, natural resource depletion, pollution, and other salient development crises in China. The key factors influencing urban resilience are taken into full consideration; expert appraisal is conducted based on the Delphi Method and the analytic hierarchy process (AHP) to design an extensible and updatable resilient city evaluation system which is sufficiently systematic, geographically adaptable, and sustainable for China's current urban development needs. Finally, Changsha is taken as the main case for empirical study on comprehensive evaluation of similar cities in Central China to improve the indicator system.}, subject = {Stadtplanung}, language = {en} } @article{ArtusAlabassyKoch, author = {Artus, Mathias and Alabassy, Mohamed Said Helmy and Koch, Christian}, title = {A BIM Based Framework for Damage Segmentation, Modeling, and Visualization Using IFC}, series = {Applied Sciences}, volume = {2022}, journal = {Applied Sciences}, number = {volume 12, issue 6, article 2772}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/app12062772}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20220314-46059}, pages = {1 -- 24}, abstract = {Paper-based data acquisition and manual transfer between incompatible software or data formats during inspections of bridges, as done currently, are time-consuming, error-prone, cumbersome, and lead to information loss. A fully digitized workflow using open data formats would reduce data loss, efforts, and the costs of future inspections. On the one hand, existing studies proposed methods to automatize data acquisition and visualization for inspections. These studies lack an open standard to make the gathered data available for other processes. On the other hand, several studies discuss data structures for exchanging damage information among different stakeholders. However, those studies do not cover the process of automatic data acquisition and transfer. This study focuses on a framework that incorporates automatic damage data acquisition, transfer, and a damage information model for data exchange. This enables inspectors to use damage data for subsequent analyses and simulations. The proposed framework shows the potentials for a comprehensive damage information model and related (semi-)automatic data acquisition and processing.}, subject = {Building Information Modeling}, language = {en} } @article{NohPark2004, author = {Noh, Jung-Hwi and Park, Jong-Heon}, title = {A Calculation of Initial Cable Force for Ko-Ha Grand Bridge}, doi = {10.25643/bauhaus-universitaet.245}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2459}, year = {2004}, abstract = {The primary objective of initial shape analysis of a cable stayed bridge is to calculate initial installation cable tension forces and to evaluate fabrication camber of main span and pylon providing the final longitudinal profile of the bridge at the end of construction. In addition, the initial cable forces depending on the alternation of the bridge's shape can be obtained from the analysis, and will be used to provide construction safety during construction. In this research, we conducted numerical experiments for initial shape of Ko-ha bridge, which will be constructed in the near future, using three different typical methods such as continuous beam method, linear truss method, and IIMF (Introducing Initial Member Force) method}, subject = {Finite-Elemente-Methode}, language = {en} } @inproceedings{O'BrienDansoAmoakoIssa2004, author = {O'Brien, William and Danso-Amoako, Mark and Issa, Raja}, title = {A Case Study of IFC and CIS/2 Support for Steel Supply Chain Processes}, doi = {10.25643/bauhaus-universitaet.119}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1195}, year = {2004}, abstract = {The evolution of data exchange and integration standards within the Architectural, Engineering and Construction industry is gradually making the long-held vision of computer-integratedconstruction a reality. The Industry Foundations Classes and CIMSteel Integration Standards are two such standards that have seen remarkable successes over the past few years. Despite successes, these standards support the exchange of product data more than they do process data, especially those processes that are loosely coupled with product models. This paper reports on on-going research to evaluate the adequacy of the IFC and CIS/2 standards to support process modeling in the steel supply chain. Some initial recommendations are made regarding enhancements to the data standards to better support processes.}, subject = {Bauwerk}, language = {en} } @article{KavrakovLegatiukGuerlebecketal., author = {Kavrakov, Igor and Legatiuk, Dmitrii and G{\"u}rlebeck, Klaus and Morgenthal, Guido}, title = {A categorical perspective towards aerodynamic models for aeroelastic analyses of bridge decks}, series = {Royal Society Open Science}, journal = {Royal Society Open Science}, number = {Volume 6, Issue 3}, doi = {/10.1098/rsos.181848}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190314-38656}, pages = {20}, abstract = {Reliable modelling in structural engineering is crucial for the serviceability and safety of structures. A huge variety of aerodynamic models for aeroelastic analyses of bridges poses natural questions on their complexity and thus, quality. Moreover, a direct comparison of aerodynamic models is typically either not possible or senseless, as the models can be based on very different physical assumptions. Therefore, to address the question of principal comparability and complexity of models, a more abstract approach, accounting for the effect of basic physical assumptions, is necessary. This paper presents an application of a recently introduced category theory-based modelling approach to a diverse set of models from bridge aerodynamics. Initially, the categorical approach is extended to allow an adequate description of aerodynamic models. Complexity of the selected aerodynamic models is evaluated, based on which model comparability is established. Finally, the utility of the approach for model comparison and characterisation is demonstrated on an illustrative example from bridge aeroelasticity. The outcome of this study is intended to serve as an alternative framework for model comparison and impact future model assessment studies of mathematical models for engineering applications.}, subject = {Br{\"u}cke}, language = {en} } @article{NguyenXuanNguyenBordasetal., author = {Nguyen-Xuan, Hung and Nguyen, Hiep Vinh and Bordas, St{\´e}phane Pierre Alain and Rabczuk, Timon and Duflot, Marc}, title = {A cell-based smoothed finite element method for three dimensional solid structures}, series = {KSCE Journal of Civil Engineering}, journal = {KSCE Journal of Civil Engineering}, doi = {10.1007/s12205-012-1515-7}, pages = {1230 -- 1242}, abstract = {This paper extends further the strain smoothing technique in finite elements to 8-noded hexahedral elements (CS-FEM-H8). The idea behind the present method is similar to the cell-based smoothed 4-noded quadrilateral finite elements (CS-FEM-Q4). In CSFEM, the smoothing domains are created based on elements, and each element can be further subdivided into 1 or several smoothing cells. It is observed that: 1) The CS-FEM using a single smoothing cell can produce higher stress accuracy, but insufficient rank and poor displacement accuracy; 2) The CS-FEM using several smoothing cells has proper rank, good displacement accuracy, but lower stress accuracy, especially for nearly incompressible and bending dominant problems. We therefore propose 1) an extension of strain smoothing to 8-noded hexahedral elements and 2) an alternative CS-FEM form, which associates the single smoothing cell issue with multi-smoothing cell one via a stabilization technique. Several numerical examples are provided to show the reliability and accuracy of the present formulation.}, subject = {Angewandte Mathematik}, language = {en} } @article{Vaarmann1997, author = {Vaarmann, Otu}, title = {A class of rapidly convergent interative Methods for Problems in mathematical Modelling}, doi = {10.25643/bauhaus-universitaet.522}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5223}, year = {1997}, abstract = {Methods with the convergence order p 2 (Newton`s, tangent hyperbolas, tangent parabolas etc.) and their approximate variants are studied. Conditions are presented under which the approximate variants preserve their convergence rate intrinsic to these methods and some computational aspects (possibilities to organize parallel computation, globalization of a method, the solution of the linear equations versus the matrix inversion at every iteration etc.) are discussed. Polyalgorithmic computational schemes (hybrid methods) combining the best features of various methods are developed and possibilities of their application to numerical solution of two-point boundary-value problem in ordinary differential equations and decomposition-coordination problem in convex programming are analyzed.}, subject = {Mathematisches Modell}, language = {en} } @article{AbbaspourGilandehMolaeeSabzietal., author = {Abbaspour-Gilandeh, Yousef and Molaee, Amir and Sabzi, Sajad and Nabipour, Narjes and Shamshirband, Shahaboddin and Mosavi, Amir}, title = {A Combined Method of Image Processing and Artificial Neural Network for the Identification of 13 Iranian Rice Cultivars}, series = {agronomy}, volume = {2020}, journal = {agronomy}, number = {Volume 10, Issue 1, 117}, publisher = {MDPI}, doi = {10.3390/agronomy10010117}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200123-40695}, pages = {21}, abstract = {Due to the importance of identifying crop cultivars, the advancement of accurate assessment of cultivars is considered essential. The existing methods for identifying rice cultivars are mainly time-consuming, costly, and destructive. Therefore, the development of novel methods is highly beneficial. The aim of the present research is to classify common rice cultivars in Iran based on color, morphologic, and texture properties using artificial intelligence (AI) methods. In doing so, digital images of 13 rice cultivars in Iran in three forms of paddy, brown, and white are analyzed through pre-processing and segmentation of using MATLAB. Ninety-two specificities, including 60 color, 14 morphologic, and 18 texture properties, were identified for each rice cultivar. In the next step, the normal distribution of data was evaluated, and the possibility of observing a significant difference between all specificities of cultivars was studied using variance analysis. In addition, the least significant difference (LSD) test was performed to obtain a more accurate comparison between cultivars. To reduce data dimensions and focus on the most effective components, principal component analysis (PCA) was employed. Accordingly, the accuracy of rice cultivar separations was calculated for paddy, brown rice, and white rice using discriminant analysis (DA), which was 89.2\%, 87.7\%, and 83.1\%, respectively. To identify and classify the desired cultivars, a multilayered perceptron neural network was implemented based on the most effective components. The results showed 100\% accuracy of the network in identifying and classifying all mentioned rice cultivars. Hence, it is concluded that the integrated method of image processing and pattern recognition methods, such as statistical classification and artificial neural networks, can be used for identifying and classification of rice cultivars.}, subject = {Maschinelles Lernen}, language = {en} } @article{HarirchianIsik, author = {Harirchian, Ehsan and Isik, Ercan}, title = {A Comparative Probabilistic Seismic Hazard Analysis for Eastern Turkey (Bitlis) Based on Updated Hazard Map and Its Effect on Regular RC Structures}, series = {Buildings}, volume = {2022}, journal = {Buildings}, number = {Volume 12, issue 10, article 1573}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/buildings12101573}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20221028-47283}, pages = {1 -- 19}, abstract = {Determining the earthquake hazard of any settlement is one of the primary studies for reducing earthquake damage. Therefore, earthquake hazard maps used for this purpose must be renewed over time. Turkey Earthquake Hazard Map has been used instead of Turkey Earthquake Zones Map since 2019. A probabilistic seismic hazard was performed by using these last two maps and different attenuation relationships for Bitlis Province (Eastern Turkey) were located in the Lake Van Basin, which has a high seismic risk. The earthquake parameters were determined by considering all districts and neighborhoods in the province. Probabilistic seismic hazard analyses were carried out for these settlements using seismic sources and four different attenuation relationships. The obtained values are compared with the design spectrum stated in the last two earthquake maps. Significant differences exist between the design spectrum obtained according to the different exceedance probabilities. In this study, adaptive pushover analyses of sample-reinforced concrete buildings were performed using the design ground motion level. Structural analyses were carried out using three different design spectra, as given in the last two seismic design codes and the mean spectrum obtained from attenuation relationships. Different design spectra significantly change the target displacements predicted for the performance levels of the buildings.}, subject = {Erbeben}, language = {en} } @article{HarirchianJadhavMohammadetal., author = {Harirchian, Ehsan and Jadhav, Kirti and Mohammad, Kifaytullah and Aghakouchaki Hosseini, Seyed Ehsan and Lahmer, Tom}, title = {A Comparative Study of MCDM Methods Integrated with Rapid Visual Seismic Vulnerability Assessment of Existing RC Structures}, series = {Applied Sciences}, volume = {2020}, journal = {Applied Sciences}, number = {Volume 10, issue 18, article 6411}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/app10186411}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200918-42360}, pages = {24}, abstract = {Recently, the demand for residence and usage of urban infrastructure has been increased, thereby resulting in the elevation of risk levels of human lives over natural calamities. The occupancy demand has rapidly increased the construction rate, whereas the inadequate design of structures prone to more vulnerability. Buildings constructed before the development of seismic codes have an additional susceptibility to earthquake vibrations. The structural collapse causes an economic loss as well as setbacks for human lives. An application of different theoretical methods to analyze the structural behavior is expensive and time-consuming. Therefore, introducing a rapid vulnerability assessment method to check structural performances is necessary for future developments. The process, as mentioned earlier, is known as Rapid Visual Screening (RVS). This technique has been generated to identify, inventory, and screen structures that are potentially hazardous. Sometimes, poor construction quality does not provide some of the required parameters; in this case, the RVS process turns into a tedious scenario. Hence, to tackle such a situation, multiple-criteria decision-making (MCDM) methods for the seismic vulnerability assessment opens a new gateway. The different parameters required by RVS can be taken in MCDM. MCDM evaluates multiple conflicting criteria in decision making in several fields. This paper has aimed to bridge the gap between RVS and MCDM. Furthermore, to define the correlation between these techniques, implementation of the methodologies from Indian, Turkish, and Federal Emergency Management Agency (FEMA) codes has been done. The effects of seismic vulnerability of structures have been observed and compared.}, subject = {Erdbebensicherheit}, language = {en} } @article{ZhaoWangJiangetal., author = {Zhao, Jun-Hua and Wang, L. and Jiang, Jin-Wu and Wang, Z. and Guo, Wanlin and Rabczuk, Timon}, title = {A comparative study of two molecular mechanics models based on harmonic potentials}, series = {Journal of Applied Physics}, journal = {Journal of Applied Physics}, abstract = {A comparative study of two molecular mechanics models based on harmonic potentials}, subject = {Angewandte Mathematik}, language = {en} } @unpublished{KhosraviSheikhKhozaniMao, author = {Khosravi, Khabat and Sheikh Khozani, Zohreh and Mao, Luka}, title = {A comparison between advanced hybrid machine learning algorithms and empirical equations applied to abutment scour depth prediction}, doi = {10.25643/bauhaus-universitaet.4388}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20210311-43889}, pages = {43}, abstract = {Complex vortex flow patterns around bridge piers, especially during floods, cause scour process that can result in the failure of foundations. Abutment scour is a complex three-dimensional phenomenon that is difficult to predict especially with traditional formulas obtained using empirical approaches such as regressions. This paper presents a test of a standalone Kstar model with five novel hybrid algorithm of bagging (BA-Kstar), dagging (DA-Kstar), random committee (RC-Kstar), random subspace (RS-Kstar), and weighted instance handler wrapper (WIHWKstar) to predict scour depth (ds) for clear water condition. The dataset consists of 99 scour depth data from flume experiments (Dey and Barbhuiya, 2005) using abutment shapes such as vertical, semicircular and 45◦ wing. Four dimensionless parameter of relative flow depth (h/l), excess abutment Froude number (Fe), relative sediment size (d50/l) and relative submergence (d50/h) were considered for the prediction of relative scour depth (ds/l). A portion of the dataset was used for the calibration (70\%), and the remaining used for model validation. Pearson correlation coefficients helped deciding relevance of the input parameters combination and finally four different combinations of input parameters were used. The performance of the models was assessed visually and with quantitative metrics. Overall, the best input combination for vertical abutment shape is the combination of Fe, d50/l and h/l, while for semicircular and 45◦ wing the combination of the Fe and d50/l is the most effective input parameter combination. Our results show that incorporating Fe, d50/l and h/l lead to higher performance while involving d50/h reduced the models prediction power for vertical abutment shape and for semicircular and 45◦ wing involving h/l and d50/h lead to more error. The WIHW-Kstar provided the highest performance in scour depth prediction around vertical abutment shape while RC-Kstar model outperform of other models for scour depth prediction around semicircular and 45◦ wing.}, subject = {maschinelles Lernen}, language = {en} } @article{BucherMost, author = {Bucher, Christian and Most, Thomas}, title = {A comparison of approximate response functions in structural reliability analysis}, series = {Probabilistic Engineering Mechanics}, journal = {Probabilistic Engineering Mechanics}, pages = {154 -- 163}, abstract = {A comparison of approximate response functions in structural reliability analysis}, subject = {Angewandte Mathematik}, language = {en} } @article{TalebiSilaniBordasetal., author = {Talebi, Hossein and Silani, Mohammad and Bordas, St{\´e}phane Pierre Alain and Kerfriden, Pierre and Rabczuk, Timon}, title = {A computational library for multiscale modeling of material failure}, series = {Computational Mechanics}, journal = {Computational Mechanics}, abstract = {A computational library for multiscale modeling of material failure}, subject = {Angewandte Mathematik}, language = {en} } @article{BeerFirmenichRichter2004, author = {Beer, Daniel G. and Firmenich, Berthold and Richter, Torsten}, title = {A Concept for CAD Systems with Persistent Versioned Data Models}, doi = {10.25643/bauhaus-universitaet.204}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2046}, year = {2004}, abstract = {The synchronous distributed processing of common source code in the software development process is supported by well proven methods. The planning process has similarities with the software development process. However, there are no consistent and similarly successful methods for applications in construction projects. A new approach is proposed in this contribution.}, subject = {Produktmodell}, language = {en} } @inproceedings{AlDiabHenryBoulemia2003, author = {Al Diab, Ali and Henry, Eric and Boulemia, Cherif}, title = {A concerted and multi-criterion approach for helping to choose a Structure- Foundation system of building}, doi = {10.25643/bauhaus-universitaet.273}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2732}, year = {2003}, abstract = {The research of the best building design requires a concerted design approach of both structure and foundation. Our work is an application of this approach. Our objective is also to create an interactive tool, which will be able to define, at the early design stages, the orientations of structure and foundation systems that satisfy as well as possible the client and the architect. If the concerns of these two actors are primarily technical and economical, they also wish to apprehend the environmental and social dimensions of their projects. Thus, this approach bases on alternative studies and on a multi-criterion analysis. In this paper, we present the context of our work, the problem formulation, which allows a concerted design of Structure and Foundation systems and the feasible solutions identifying process.}, subject = {Bauwerk}, language = {en} } @inproceedings{BockGuerlebeck, author = {Bock, Sebastian and G{\"u}rlebeck, Klaus}, title = {A Coupled Ritz-Galerkin Approach Using Holomorphic and Anti-holomorphic Functions}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2928}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29281}, pages = {14}, abstract = {The contribution focuses on the development of a basic computational scheme that provides a suitable calculation environment for the coupling of analytical near-field solutions with numerical standard procedures in the far-field of the singularity. The proposed calculation scheme uses classical methods of complex function theory, which can be generalized to 3-dimensional problems by using the framework of hypercomplex analysis. The adapted approach is mainly based on the factorization of the Laplace operator EMBED Equation.3 by the Cauchy-Riemann operator EMBED Equation.3 , where exact solutions of the respective differential equation are constructed by using an orthonormal basis of holomorphic and anti-holomorphic functions.}, subject = {Architektur }, language = {en} } @article{ZhuangHuangLiangetal., author = {Zhuang, Xiaoying and Huang, Runqiu and Liang, Chao and Rabczuk, Timon}, title = {A coupled thermo-hydro-mechanical model of jointed hard rock for compressed air energy storage}, series = {Mathematical Problems in Engineering}, journal = {Mathematical Problems in Engineering}, doi = {10.1155/2014/179169}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170428-31726}, abstract = {Renewable energy resources such as wind and solar are intermittent, which causes instability when being connected to utility grid of electricity. Compressed air energy storage (CAES) provides an economic and technical viable solution to this problem by utilizing subsurface rock cavern to store the electricity generated by renewable energy in the form of compressed air. Though CAES has been used for over three decades, it is only restricted to salt rock or aquifers for air tightness reason. In this paper, the technical feasibility of utilizing hard rock for CAES is investigated by using a coupled thermo-hydro-mechanical (THM) modelling of nonisothermal gas flow. Governing equations are derived from the rules of energy balance, mass balance, and static equilibrium. Cyclic volumetric mass source and heat source models are applied to simulate the gas injection and production. Evaluation is carried out for intact rock and rock with discrete crack, respectively. In both cases, the heat and pressure losses using air mass control and supplementary air injection are compared.}, subject = {Energiespeicherung}, language = {en} } @article{ZhuangHuangRabczuketal., author = {Zhuang, Xiaoying and Huang, Runqiu and Rabczuk, Timon and Liang, C.}, title = {A coupled thermo-hydro-mechanical model of jointed hard rock for compressed air energy storage}, series = {Mathematical Problems in Engineering}, journal = {Mathematical Problems in Engineering}, abstract = {A coupled thermo-hydro-mechanical model of jointed hard rock for compressed air energy storage}, subject = {Angewandte Mathematik}, language = {en} } @article{AlaladeReichertKoehnetal., author = {Alalade, Muyiwa and Reichert, Ina and K{\"o}hn, Daniel and Wuttke, Frank and Lahmer, Tom}, title = {A Cyclic Multi-Stage Implementation of the Full-Waveform Inversion for the Identification of Anomalies in Dams}, series = {Infrastructures}, volume = {2022}, journal = {Infrastructures}, number = {Volume 7, issue 12, article 161}, editor = {Qu, Chunxu and Gao, Chunxu and Zhang, Rui and Jia, Ziguang and Li, Jiaxiang}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/infrastructures7120161}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20221201-48396}, pages = {19}, abstract = {For the safe and efficient operation of dams, frequent monitoring and maintenance are required. These are usually expensive, time consuming, and cumbersome. To alleviate these issues, we propose applying a wave-based scheme for the location and quantification of damages in dams. To obtain high-resolution "interpretable" images of the damaged regions, we drew inspiration from non-linear full-multigrid methods for inverse problems and applied a new cyclic multi-stage full-waveform inversion (FWI) scheme. Our approach is less susceptible to the stability issues faced by the standard FWI scheme when dealing with ill-posed problems. In this paper, we first selected an optimal acquisition setup and then applied synthetic data to demonstrate the capability of our approach in identifying a series of anomalies in dams by a mixture of reflection and transmission tomography. The results had sufficient robustness, showing the prospects of application in the field of non-destructive testing of dams.}, subject = {Damm}, language = {en} } @phdthesis{Lux, author = {Lux, Christopher}, title = {A Data-Virtualization System for Large Model Visualization}, doi = {10.25643/bauhaus-universitaet.1985}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20130725-19855}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {211}, abstract = {Interactive scientific visualizations are widely used for the visual exploration and examination of physical data resulting from measurements or simulations. Driven by technical advancements of data acquisition and simulation technologies, especially in the geo-scientific domain, large amounts of highly detailed subsurface data are generated. The oil and gas industry is particularly pushing such developments as hydrocarbon reservoirs are increasingly difficult to discover and exploit. Suitable visualization techniques are vital for the discovery of the reservoirs as well as their development and production. However, the ever-growing scale and complexity of geo-scientific data sets result in an expanding disparity between the size of the data and the capabilities of current computer systems with regard to limited memory and computing resources. In this thesis we present a unified out-of-core data-virtualization system supporting geo-scientific data sets consisting of multiple large seismic volumes and height-field surfaces, wherein each data set may exceed the size of the graphics memory or possibly even the main memory. Current data sets fall within the range of hundreds of gigabytes up to terabytes in size. Through the mutual utilization of memory and bandwidth resources by multiple data sets, our data-management system is able to share and balance limited system resources among different data sets. We employ multi-resolution methods based on hierarchical octree and quadtree data structures to generate level-of-detail working sets of the data stored in main memory and graphics memory for rendering. The working set generation in our system is based on a common feedback mechanism with inherent support for translucent geometric and volumetric data sets. This feedback mechanism collects information about required levels of detail during the rendering process and is capable of directly resolving data visibility without the application of any costly occlusion culling approaches. A central goal of the proposed out-of-core data management system is an effective virtualization of large data sets. Through an abstraction of the level-of-detail working sets, our system allows developers to work with extremely large data sets independent of their complex internal data representations and physical memory layouts. Based on this out-of-core data virtualization infrastructure, we present distinct rendering approaches for specific visualization problems of large geo-scientific data sets. We demonstrate the application of our data virtualization system and show how multi-resolution data can be treated exactly the same way as regular data sets during the rendering process. An efficient volume ray casting system is presented for the rendering of multiple arbitrarily overlapping multi-resolution volume data sets. Binary space-partitioning volume decomposition of the bounding boxes of the cube-shaped volumes is used to identify the overlapping and non-overlapping volume regions in order to optimize the rendering process. We further propose a ray casting-based rendering system for the visualization of geological subsurface models consisting of multiple very detailed height fields. The rendering of an entire stack of height-field surfaces is accomplished in a single rendering pass using a two-level acceleration structure, which combines a minimum-maximum quadtree for empty-space skipping and sorted lists of depth intervals to restrict ray intersection searches to relevant height fields and depth ranges. Ultimately, we present a unified rendering system for the visualization of entire geological models consisting of highly detailed stacked horizon surfaces and massive volume data. We demonstrate a single-pass ray casting approach facilitating correct visual interaction between distinct translucent model components, while increasing the rendering efficiency by reducing processing overhead of potentially invisible parts of the model. The combination of image-order rendering approaches and the level-of-detail feedback mechanism used by our out-of-core data-management system inherently accounts for occlusions of different data types without the application of costly culling techniques. The unified out-of-core data-management and virtualization infrastructure considerably facilitates the implementation of complex visualization systems. We demonstrate its applicability for the visualization of large geo-scientific data sets using output-sensitive rendering techniques. As a result, the magnitude and multitude of data sets that can be interactively visualized is significantly increased compared to existing approaches.}, subject = {Computer Graphics}, language = {en} } @phdthesis{Hanko2007, author = {Hanko, Johanne}, title = {A decision-making tool for the selection of an appropriate integrated MSW management system for tropical Asian cities; the case of Bangkok}, doi = {10.25643/bauhaus-universitaet.635}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20071213-10034}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2007}, abstract = {Einf{\"u}hrung Tropische asiatische Entwicklungs- und Schwellenl{\"a}nder zeigten rasches st{\"a}dtisches Wachstum dadurch, dass Bauern einwanderten, um ein besseres Leben in der Stadt zu suchen. Dadurch ergab sich in vielen St{\"a}dten ein Mangel an geeigneter Infrastruktur und an sozialen Diensten. Die st{\"a}dtische M{\"u}llversorgung bildet keine Ausnahme; sie wird sogar oft an das Ende der Prio-rit{\"a}tenliste f{\"u}r st{\"a}dtische Aufgabenpl{\"a}ne gestellt, da dabei zuerst die Gesetze und Verordnun-gen formuliert und umgesetzt werden m{\"u}ssen. Das Problem des nicht entsorgten st{\"a}dtischen M{\"u}lls f{\"u}hrt (mit Sicherheit) zu Luftverschmutzung, Krankheit und zur Verseuchung des Bo-dens und des Wassers. Diese Probleme stehen in tropischen Klimaten im Zusammenhang mit hoher Temperatur und Feuchtigkeit, mit heftigem Regen und mit h{\"a}ufigen {\"U}berschwemmun-gen. Stehendes Wasser und Ausschwemmung aus dem Abfall werden sehr schnell zu Brutst{\"a}t-ten von Insekten, Nagern und Bakterien, und damit zu einer Gesundheitsgefahr f{\"u}r Arbeiter und die allgemeine Bev{\"o}lkerung. Dar{\"u}ber hinaus kann Wasser- und Grundwasserverschmut-zung/Kontamination zu einer ernsten Umweltzerst{\"o}rung f{\"u}hren, mit direkten Auswirkungen auf die Wasserressourcen, und auf raschen Qualit{\"a}tsverlust der pflanzlichen Erzeugnisse, des R{\"u}ckgrates der meisten tropischen asiatischen L{\"a}nder. M{\"u}llentsorgung und die Verantwortlichkeiten Lokale Regierungen m{\"u}ssen die {\"o}ffentliche Gesundheit ihrer lokalen Bev{\"o}lkerung sicherstellen und sind deshalb f{\"u}r die M{\"u}llentsorgung verantwortlich. Asiatische tropische Klimate sich rasch {\"a}ndernde M{\"u}llzusammensetzung machen die M{\"u}llbehandlung und -entsorgung zu einer dauernden Herausforderung der Entscheidungstr{\"a}ger. Vor einer Entscheidung {\"u}ber das ver-wendete Entsorgungssystem muss eine geeignete Abfall-Charakterisierung treten. Diese Cha-rakterisierung liefert Kenntnisse {\"u}ber die Abfallmenge, die Feuchte, den Heizwert und die Menge der verschiedenen Komponenten im Abfallstrom, wie z. B.: organisches Material, Plas-tik, Papier, Karton, Holz, Textilien, Gummi, Leder, Glas, Metalle, Nichtmetalle, Steine und Keramiken. Dar{\"u}ber hinaus ist die Herausforderung, der sich asiatische L{\"a}nder gegen{\"u}ber se-hen, ein Mangel an Raum und damit wird die Platzierung eine Deponie zunehmend schwierig. Die Abfallwirtschaft ist eine kostenintensive, aber trotzdem notwendige Maßnahme, um das Wohlergehen sowohl der Bev{\"o}lkerung als auch f{\"u}r die Umwelt sicher zu stellen. Es wird ge-sch{\"a}tzt, dass Asien im Jahr 2025 etwa 47 Milliarden US\$ aufwenden muss, um 0,5 bis 1 Kg st{\"a}dtischen M{\"u}ll je Person und Tag abzufahren und zu behandeln, oder 5 US\$ je Kopf und Jahr. In Entwicklungsl{\"a}ndern sind unz{\"a}hlige Leute nicht in der Lage, diese hohen Preise f{\"u}r die Ab-fallentsorgung zu zahlen. Deshalb liegt es in der Verantwortung der Regierung, die Abfallent-sorgung zu betreiben und zu finanzieren, um die Bev{\"o}lkerung, die Gemeinde und die Umwelt zu sch{\"u}tzen. Tropische asiatische St{\"a}dte m{\"u}ssen jetzt bezahlbare und nachhaltige Verfahren f{\"u}r die Entsorgung ihrer zunehmenden Menge t{\"a}glichen Abfalls benennen, wobei gleichzeitig auf minimale Umweltbelastung, auf soziale Akzeptanz und auf minimale Landverbrauch zu achten ist. Eine leicht anwendbare Entscheidungshilfe zur Wahl des geeignetesten Abfallbehandlungs-system der Gemeinde w{\"a}re deshalb sehr n{\"u}tzlich. Proposition Der Zweck dieser Dissertation war die Entwicklung eines nutzerfreundlichen Instrumentariums f{\"u}r das Verwaltungs- und Regierungspersonal in tropischen Entwicklungs- und Schwellenl{\"a}n-der. 1. Diese Vorgehensweise basiert auf einem Netzwerk, das eine Liste ausgew{\"a}hlter entschei-dungsrelevanter Tatsachen in Betracht zieht, die n{\"o}tig sind, um eine informierte Entschei-dung machen zu k{\"o}nnen. Das entscheidungshelfende Verfahren muss von Entscheidungs-tr{\"a}gern bei einer vorl{\"a}ufigen Feststellung des Abfallentsorgungs- und -behandlungssystems f{\"u}r ihre Gemeinde benutzt werden. 2. Tropische asiatische St{\"a}dte m{\"u}ssen eine Reihe von Faktoren ber{\"u}cksichtigen, wenn sie {\"u}ber ihren Abfallwirtschaftsplan entscheiden. Dazu geh{\"o}ren die immerwechselnde Menge und Zusammensetzung des Abfalls infolge der zunehmenden Bev{\"o}lkerungszahl und des Ein-kommens je Kopf, der hohe Feuchtigkeitsgrad, Verbrennungsw{\"a}rme-Werte und die oft be-grenzten finanziellen M{\"o}glichkeiten. 3. Ferner sind gesetzliche, politische, verwaltungstechnische, soziale, finanzielle, {\"o}konomi-sche und technische Faktoren bestimmend. 4. Die Verwaltung muss dabei die Wichtigkeit jedes Teilschrittes der Abfallwirtschaft im Au-ge behalten, also Abfallerzeugung, Sammlung, Transport, Abfallcharakterisierung, Entsor-gung und Behandlung. 5. Die Rolle der lokalen Gemeinden in der Entscheidungsfindung ist nicht hoch genug einzu-sch{\"a}tzen; deshalb m{\"u}ssen Mitglieder der Gemeinde aktiv am Schutz der Umwelt und an der Verhinderung ihrer Zerst{\"o}rung mitwirken. Mehrere Entscheidungshilfsverfahren f{\"u}r ver-schiedene Anwendungen wurden entwickelt. Jedoch zieht die Mehrzahl von ihnen nicht notwendigerweise eine {\"o}ffentliche Teilnahme in Betracht, und sie sind auch nicht benutzer-freundlich. 6. Um die Komplexit{\"a}t der Probleme besser zu verstehen, die bei tropischen asiatischen St{\"a}d-ten auftreten, wurde die Innenstadt von Bangkok, Thailands gr{\"o}ßte Stadt und Hauptstadt, als repr{\"a}sentativer Fall ausgew{\"a}hlt, f{\"u}r die Entsorgung der 9000 t M{\"u}ll der t{\"a}glich produ-ziert wird. Thailands Klima ist, besonders w{\"a}hrend der j{\"a}hrlichen Monsunzeit, heiß und feucht mit einer mittleren Temperatur von 28,4°C und einer Feuchtigkeit zwischen 70 und 100\%. Die Gesetze und Verordnungen zeigen sehr deutlich an, wie wichtig die Behandlung des st{\"a}dtischen Abfalls genommen wird. Zahlreiche Interviews, verbunden mit der Durch-sicht von Dokumenten, Berichten und Ortsbesichtigungen ergaben Kenntnisse der zahlrei-chen Entscheidungsmaßnahmen, denen sich die st{\"a}dtischen Entscheidungstr{\"a}ger einer tro-pischen Stadt gegen{\"u}ber sehen. Die Durchsicht und die Analyse der Entscheidungsmaß-nahmen in Bangkoks Abfallentsorgungsstrategien zeigten, wie das Entscheiden als Werk-zeug in verschiedenen asiatischen tropischen St{\"a}dten benutzt werden kann. 7. Ein Entscheidungsrahmen wurde erstellt auf der Grundlage von Literatur-Recherchen und pers{\"o}nliche Erfahrungen, und anhand der in der Stadt Bangkok gesammelte Daten {\"u}ber-pr{\"u}ft. Die Entscheidungspunkte im Netzwerk umfassen eine allgemeine Beschreibung der Stadt, ihre klimatischen und hydrogeologischen Bedingungen, die Menge und Art des er-zeugten M{\"u}lls, einen {\"U}berblick {\"u}ber die bestehenden Anlagen und die existierenden Pro-gramme, {\"o}ffentliche Aufmerksamkeit zu gewinnen, den sozio{\"o}konomischen Aspekt eines Abfallbehandlungssystems und die {\"o}ffentliche Teilnahme. Es ber{\"u}cksichtigt ferner Ge-sundheits- und Sicherheits{\"u}berlegungen im Zusammenhang mit Abfallentsorgungsm{\"o}g-lichkeiten und ihrer Kosten. 8. Das Entscheidungsinstrumentarium hat als Ziel, ein geeignetes Abfallbehandlungssystem zu erm{\"o}glichen, das als Grundlage soziale, klimatische und technische Informationen be-nutzt. Ihre Einfachheit erlaubt einem Verwaltungspersonal, das wenig Erfahrung mit Ab-fallwirtschaft und Computerwissen besitzt, verschiedene Optionen zu analysieren und Sze-narien auszutesten. Des weiteren werden verschiedene M{\"o}glichkeiten {\"u}berpr{\"u}ft, und es wird versucht, die Optionen in die Abfallwirtschaft zu integrieren. 9. Das Instrumentarium beinhaltet {\"u}ber ein Hundert geschlossene Fragen, die auf das Analy-sieren der Bed{\"u}rfnisse und der gegenw{\"a}rtigen Situation der Abfallwirtschaft einer be-stimmten Gesellschaft ausgerichtet sind und die es erm{\"o}glichen, ein geeignetes Abfallwirt-schaftssystem f{\"u}r die entsprechende Gesellschaft zu w{\"a}hlen. Diese Fragen hatten als Grundlage die Rahmen und Eckpunkte des Entscheidungsinstrumentariums. Dieses Instru-mentarium ist selbsterkl{\"a}rend, und gleichzeitig bietet es Flexibilit{\"a}t bei der Entscheidung, um wie viel Prozent des Abfalls wieder verwertet wird, kompostiert oder behandelt durch irgend eine von den sechs Behandlungsoptionen; Kompostierung, Verg{\"a}rung, nicht-Verbrennungssysteme, Verbrennung, Deponierung und Energiegewinnung. 10. Die Ziele eines integrierten Abfallwirtschaftssystems k{\"o}nnen vom Benutzer ge{\"a}ndert und modifiziert werden. Dies erm{\"o}glicht die {\"U}berpr{\"u}fung verschiedener Szenarien und die Auswahl des geeignetesten Abfallbehandlungssystems. Das System kann sehr einfach sein und nur ein Behandlungssystem beinhalten oder mit einer Auswahl mehrere Behandlungs-systeme sehr kompliziert sein. In einigen L{\"a}ndern ist es Vorschrift mehrere Systeme anzu-wenden. Integrierte Abfallwirtschaftssysteme, die mindestens zwei oder drei Abfallbe-handlungssysteme beinhalten, sind deshalb gefragt. 11. Die Ziele der Gesellschaft sind ausschlaggebend und sind die Schl{\"u}sselfaktoren f{\"u}r den Entscheidungsprozess. Die Menge der wiederverwertbaren Materialien, die Brauchbarkeit des Komposts, die Interesse an Verg{\"a}rung, die M{\"o}glichkeit einer Verbrennungsanlage, das Verstehen eines nicht-Verbrennungssystems und die Verf{\"u}gbarkeit von Land f{\"u}r Deponien, die Notwendigkeit f{\"u}r Elektrizit{\"a}t sind einige Schl{\"u}sselfaktoren die {\"u}berlegt werden m{\"u}s-sen. Integrierte Abfallwirtschaft ist wahrscheinlich die vern{\"u}nftigste Vorgehensweise. Dies erm{\"o}glicht Flexibilit{\"a}t bei Abfallwirtschaftstechniken und erg{\"a}nzt sie gegenseitig. 12. {\"O}ffentliche Verwaltungen k{\"o}nnen DMT als eine erste Bewertung der geeignetesten Tech-nologie benutzen. Des weiteren gibt DMT dem Verwaltungspersonal Flexibilit{\"a}t in ihrer Wahl bez{\"u}glich der Menge an wiederverwertbarem Abfall unter der Anwendung verschie-denen Technologien, welches eine gut konstruiertes und gut integriertes Abfallbehand-lungssystem f{\"u}r die Gesellschaft darstellt. Fazit Das Fazit ist: die Abfallwirtschaft in einem tropischen Schwellenland ist mit bestimmten Her-ausforderungen verbunden, die behandelt werden m{\"u}ssen. {\"O}konomische, technische und sozi-ale Kriterien m{\"u}ssen in Betracht gezogen werden bei der Wahl geeigneter st{\"a}dtischer Abfall-wirtschaftsysteme. Begrenzte finanzielle M{\"o}glichkeiten, Mangel an {\"o}ffentlichem Bewusstsein und ein schwaches Wirtschaftssystem sind manchmal verantwortlich f{\"u}r die Wahl eines schlechtes Abfallbehandlungssystems, mit kurzsichtigen und {\"u}ber die Jahren teuren Entschei-dungen statt langfristigen und vern{\"u}nftigeren Entscheidungen. Wetterbedingungen und die Knappheit an Land in Stadtn{\"a}he sind besondere Herausforderungen. Das Entscheidungsinstru-mentarium DMT macht die Identifizierung von Schl{\"u}sselfragen n{\"o}tig f{\"u}r die Formulierung eines nachhaltigen Abfallwirtschaftskonzepts und f{\"u}r die Wahl eines technisch-, {\"o}konomisch- und sozial-akzeptierbaren Abfallwirtschaftssystems, das besonders geeignet ist f{\"u}r tropische Klimate. Die Ergebnisse der DMT-Daten-Analyse bietet eine faire Auswertung f{\"u}r ein ad{\"a}quates integ-riertes Abfallbehandlungssystems. Wenn einmal ein System identifiziert wurde, werden weitere Studien bez{\"u}glich Umsetzbarkeit und Anwendbarkeit n{\"o}tig sein. Jedoch wird die Notwendig-keit, ausf{\"u}hrliche Studien am multiplen Szenarien durchzuf{\"u}hren, minimiert, was erhebliche Ersparnisse f{\"u}r die Stadtverwaltung bedeutet. Eine Feasibility-Study und ein Masterplan haben zu folgen, um die standortspezifischen und Finanzierungsfragen zu kl{\"a}ren sowie die Auswahl der spezifischen Anlagentechnik zu definieren.}, subject = {Abfall}, language = {en} } @inproceedings{TsutsumiHashimoto2004, author = {Tsutsumi, Kazutoshi and Hashimoto, Hiromi}, title = {A Development of the Building Kansei Information Retrieval System}, doi = {10.25643/bauhaus-universitaet.188}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1884}, year = {2004}, abstract = {The purpose of this research is to develop the method to retrieve a building name from the impression of the building. First, the images of the building are registered as database by the questionnaire. Next, the images of the objective building are compared with the degree of matching in image databases, and the building with high synthetic matching degree is retrieved. This system could get a good retrieval result. Moreover, image processing was done, and image databases are trained by neural network from the amount of characteristics of the image, and the retrieval system by image processing was examined.}, subject = {Mehragentensystem}, language = {en} } @article{ZhangWangLahmeretal., author = {Zhang, Chao and Wang, Cuixia and Lahmer, Tom and He, Pengfei and Rabczuk, Timon}, title = {A dynamic XFEM formulation for crack identification}, series = {International Journal of Mechanics and Materials in Design}, journal = {International Journal of Mechanics and Materials in Design}, pages = {427 -- 448}, abstract = {A dynamic XFEM formulation for crack identification}, subject = {Angewandte Mathematik}, language = {en} } @phdthesis{Nour2006, author = {Nour, Mohamed}, title = {A Flexible Model for Incorporating Construction Product Data into Building Information Models}, doi = {10.25643/bauhaus-universitaet.740}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20060317-7781}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2006}, abstract = {When considering the integration and interoperability between AEC-FM software applications and construction products' data, it is essential to investigate the state-of-the-art and conduct an extensive review in the literature of both Building Information Models and electronic product catalogues. It was found that there are many reasons and key-barriers that hinder the developed solutions from being implemented. Among the reasons that are attributed to the failure of many previous research projects to achieve this integration aim are the proprietary developments of CAD vendors, the fragmented nature of construction product data i.e. commercial and technical data, the prefabrication versus on-site production, marketing strategies and brand-naming, the referencing of a product to the data of its constituents, availability of life-cycle data in a single point in time where it is needed all over the whole life-cycle of the product itself, taxonomy problems, the inability to extract search parameters from the building information model to participate in the conduction of parametric searches. Finally and most important is keeping the product data in the building information model consistent and up-to-date. Hence, it was found that there is a great potential for construction product data to be integrated to building information models by electronic means in a dynamic and extensible manner that prevents the model from getting obsolete. The study has managed to establish a solution concept that links continually updated and extensible life-cycle product data to a software independent building information model (IFC) all over the life span of the product itself. As a result, the solution concept has managed to reach a reliable building information model that is capable of overcoming the majority of the above mentioned barriers. In the meantime, the solution is capable of referencing, retrieving, updating, and merging product data at any point in time. A distributed network application that represents all the involved parties in the construction product value chain is simulated by real software tools to demonstrate the proof of concept of this research work.}, subject = {Produktinformation}, language = {en} } @inproceedings{FreundtBeucke2004, author = {Freundt, Martin and Beucke, Karl}, title = {A flexible model for scheduling building processes based on graph theory and fuzzy numbers}, doi = {10.25643/bauhaus-universitaet.158}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1587}, year = {2004}, abstract = {The methods currently used for scheduling building processes have some major advantages as well as disadvantages. The main advantages are the arrangement of the tasks of a project in a clear, easily readable form and the calculation of valuable information like critical paths. The main disadvantage on the other hand is the inflexibility of the model caused by the modeling paradigms. Small changes of the modeled information strongly influence the whole model and lead to the need to change many more details in the plan. In this article an approach is introduced allowing the creation of more flexible schedules. It aims towards a more robust model that lowers the need to change more than a few information while being able to calculate the important propositions of the known models and leading to further valuable conclusions.}, subject = {Baubetrieb}, language = {en} } @inproceedings{SchapkeScherer2004, author = {Schapke, Sven-Eric and Scherer, Raimar J.}, title = {A Four Layer Bayesian Network for Product Model Based Information Mining}, doi = {10.25643/bauhaus-universitaet.120}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1207}, year = {2004}, abstract = {Business and engineering knowledge in AEC/FM is captured mainly implicitly in project and corporate document repositories. Even with the increasing integration of model-based systems with project information spaces, a large percentage of the information exchange will further on rely on isolated and rather poorly structured text documents. In this paper we propose an approach enabling the use of product model data as a primary source of engineering knowledge to support information externalisation from relevant construction documents, to provide for domain-specific information retrieval, and to help in re-organising and re-contextualising documents in accordance to the user's discipline-specific tasks and information needs. Suggested is a retrieval and mining framework combining methods for analysing text documents, filtering product models and reasoning on Bayesian networks to explicitly represent the content of text repositories in personalisable semantic content networks. We describe the proposed basic network that can be realised on short-term using minimal product model information as well as various extensions towards a full-fledged added value integration of document-based and model-based information.}, subject = {Bauwerk}, language = {en} } @inproceedings{BrehmMost2003, author = {Brehm, Maik and Most, Thomas}, title = {A Four-Node Plane EAS-Element for Stochastic Nonlinear Materials}, doi = {10.25643/bauhaus-universitaet.282}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2825}, year = {2003}, abstract = {Iso-parametric finite elements with linear shape functions show in general a too stiff element behavior, called locking. By the investigation of structural parts under bending loading the so-called shear locking appears, because these elements can not reproduce pure bending modes. Many studies dealt with the locking problem and a number of methods to avoid the undesirable effects have been developed. Two well known methods are the >Assumed Natural Strain< (ANS) method and the >Enhanced Assumed Strain< (EAS) method. In this study the EAS method is applied to a four-node plane element with four EAS-parameters. The paper will describe the well-known linear formulation, its extension to nonlinear materials and the modeling of material uncertainties with random fields. For nonlinear material behavior the EAS parameters can not be determined directly. Here the problem is solved by using an internal iteration at the element level, which is much more efficient and stable than the determination via a global iteration. To verify the deterministic element behavior the results of common test examples are presented for linear and nonlinear materials. The modeling of material uncertainties is done by point-discretized random fields. To show the applicability of the element for stochastic finite element calculations Latin Hypercube Sampling was applied to investigate the stochastic hardening behavior of a cantilever beam with nonlinear material. The enhanced linear element can be applied as an alternative to higher-order finite elements where more nodes are necessary. The presented element formulation can be used in a similar manner to improve stochastic linear solid elements.}, subject = {Nichtlineare Mechanik}, language = {en} } @phdthesis{Vogler, author = {Vogler, Verena}, title = {A framework for artificial coral reef design: Integrating computational modelling and high precision monitoring strategies for artificial coral reefs - an Ecosystem-aware design approach in times of climate change}, isbn = {978-3-00-074495-2}, doi = {10.25643/bauhaus-universitaet.4611}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20220322-46115}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {243}, abstract = {Tropical coral reefs, one of the world's oldest ecosystems which support some of the highest levels of biodiversity on the planet, are currently facing an unprecedented ecological crisis during this massive human-activity-induced period of extinction. Hence, tropical reefs symbolically stand for the destructive effects of human activities on nature [4], [5]. Artificial reefs are excellent examples of how architectural design can be combined with ecosystem regeneration [6], [7], [8]. However, to work at the interface between the artificial and the complex and temporal nature of natural systems presents a challenge, i.a. in respect to the B-rep modelling legacy of computational modelling. The presented doctorate investigates strategies on how to apply digital practice to realise what is an essential bulwark to retain reefs in impossibly challenging times. Beyond the main question of integrating computational modelling and high precision monitoring strategies in artificial coral reef design, this doctorate explores techniques, methods, and linking frameworks to support future research and practice in ecology led design contexts. Considering the many existing approaches for artificial coral reefs design, one finds they often fall short in precisely understanding the relationships between architectural and ecological aspects (e.g. how a surface design and material composition can foster coral larvae settlement, or structural three-dimensionality enhance biodiversity) and lack an integrated underwater (UW) monitoring process. Such a process is necessary in order to gather knowledge about the ecosystem and make it available for design, and to learn whether artificial structures contribute to reef regeneration or rather harm the coral reef ecosystem. For the research, empirical experimental methods were applied: Algorithmic coral reef design, high precision UW monitoring, computational modelling and simulation, and validated through parallel real-world physical experimentation - two Artificial Reef Prototypes (ARPs) in Gili Trawangan, Indonesia (2012-today). Multiple discrete methods and sub techniques were developed in seventeen computational experiments and applied in a way in which many are cross valid and integrated in an overall framework that is offered as a significant contribution to the field. Other main contributions include the Ecosystem-aware design approach, Key Performance Indicators (KPIs) for coral reef design, algorithmic design and fabrication of Biorock cathodes, new high precision UW monitoring strategies, long-term real-world constructed experiments, new digital analysis methods and two new front-end web-based tools for reef design and monitoring reefs. The methodological framework is a finding of the research that has many technical components that were tested and combined in this way for the very first time. In summary, the thesis responds to the urgency and relevance in preserving marine species in tropical reefs during this massive extinction period by offering a differentiated approach towards artificial coral reefs - demonstrating the feasibility of digitally designing such 'living architecture' according to multiple context and performance parameters. It also provides an in-depth critical discussion of computational design and architecture in the context of ecosystem regeneration and Planetary Thinking. In that respect, the thesis functions as both theoretical and practical background for computational design, ecology and marine conservation - not only to foster the design of artificial coral reefs technically but also to provide essential criteria and techniques for conceiving them. Keywords: Artificial coral reefs, computational modelling, high precision underwater monitoring, ecology in design.}, subject = {Korallenriff}, language = {en} } @inproceedings{BedardMoraRivard2004, author = {B{\´e}dard, Claude and Mora, Rodrigo and Rivard, Hugues}, title = {A Framework for Computer-Aided Conceptual Design of Building Structures}, doi = {10.25643/bauhaus-universitaet.101}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1018}, year = {2004}, abstract = {This paper describes a framework for computer-aided conceptual design of building structures that results from building architectural considerations. The central task that is carried out during conceptual design is the synthesis of the structural system. This paper proposes a methodology for the synthesis of structural solutions. Given the nature of architectural constraints, user-model interactivity is devised as the most suitable computer methodology for driving the structural synthesis process. Taking advantage of the hierarchical organization of the structural system, this research proposes a top-down approach for structural synthesis. Through hierarchical refinement, the approach lends itself to the synthesis of global and local structural solutions. The components required for implementing the proposed methodology are briefly described. The main components have been incorporated in a proof-of-concept prototype that is being tested and validated with actual buildings.}, subject = {Konzipieren }, language = {en} } @inproceedings{BaitschHartmann, author = {Baitsch, Matthias and Hartmann, Dietrich}, title = {A FRAMEWORK FOR THE INTERACTIVE VISUALIZATION OF ENGINEERING MODELS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2919}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29194}, pages = {9}, abstract = {Interactive visualization based on 3D computer graphics nowadays is an indispensable part of any simulation software used in engineering. Nevertheless, the implementation of such visualization software components is often avoided in research projects because it is a challenging and potentially time consuming task. In this contribution, a novel Java framework for the interactive visualization of engineering models is introduced. It supports the task of implementing engineering visualization software by providing adequate program logic as well as high level classes for the visual representation of entities typical for engineering models. The presented framework is built on top of the open source visualization toolkit VTK. In VTK, a visualization model is established by connecting several filter objects in a so called visualization pipeline. Although designing and implementing a good pipeline layout is demanding, VTK does not support the reuse of pipeline layouts directly. Our framework tailors VTK to engineering applications on two levels. On the first level it adds new - engineering model specific - filter classes to VTK. On the second level, ready made pipeline layouts for certain aspects of engineering models are provided. For instance there is a pipeline class for one-dimensional elements like trusses and beams that is capable of showing the elements along with deformations and member forces. In order to facilitate the implementation of a graphical user interface (GUI) for each pipeline class, there exists a reusable Java Swing GUI component that allows the user to configure the appearance of the visualization model. Because of the flexible structure, the framework can be easily adapted and extended to new problem domains. Currently it is used in (i) an object-oriented p-version finite element code for design optimization, (ii) an agent based monitoring system for dam structures and (iii) the simulation of destruction processes by controlled explosives based on multibody dynamics. Application examples from all three domains illustrates that the approach presented is powerful as well as versatile.}, subject = {Architektur }, language = {en} } @article{MaQin2004, author = {Ma, Zhiliang and Qin, Liang}, title = {A Framework of Management Information System for Construction Projects}, doi = {10.25643/bauhaus-universitaet.212}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2126}, year = {2004}, abstract = {A comprehensive framework of information management system for construction projects in China has been established through extensive literature survey and field investigation. It utilizes the potential information technologies and covers the practical management patterns as well as the major aspects of construction project management. It can be used to guide and evaluate the design of the information management systems for construction projects in order to make the system to be applicable to a wide variety of construction projects and survive the changes in project management.}, subject = {Mehragentensystem}, language = {en} } @unpublished{WetzsteinBimber2006, author = {Wetzstein, Gordon and Bimber, Oliver}, title = {A Generalized Approach to Radiometric}, doi = {10.25643/bauhaus-universitaet.762}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7625}, year = {2006}, abstract = {We propose a novel method that applies the light transport matrix for performing an image-based radiometric compensation which accounts for all possible types of light modulation. For practical application the matrix is decomposed into clusters of mutually influencing projector and camera pixels. The compensation is modeled as a linear system that can be solved with respect to the projector patterns. Precomputing the inverse light transport in combination with an efficient implementation on the GPU makes interactive compensation rates possible. Our generalized method unifies existing approaches that address individual problems. Based on examples, we show that it is possible to project corrected images onto complex surfaces such as an inter-reflecting statuette, glossy wallpaper, or through highly-refractive glass. Furthermore, we illustrate that a side-effect of our approach is an increase in the overall sharpness of defocused projections.}, subject = {Association for Computing Machinery / Special Interest Group on Graphics}, language = {en} } @inproceedings{WiggenbrockSmarsly, author = {Wiggenbrock, Jens and Smarsly, Kay}, title = {A GENERIC FRAMEWORK SUPPORTING DISTRIBUTED COMPUTING IN ENGINEERING APPLICATIONS}, series = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar}, booktitle = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar}, editor = {G{\"u}rlebeck, Klaus and Lahmer, Tom}, organization = {Bauhaus-Universit{\"a}t Weimar}, issn = {1611-4086}, doi = {10.25643/bauhaus-universitaet.2826}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170314-28260}, pages = {9}, abstract = {Modern distributed engineering applications are based on complex systems consisting of various subsystems that are connected through the Internet. Communication and collaboration within an entire system requires reliable and efficient data exchange between the subsystems. Middleware developed within the web evolution during the past years provides reliable and efficient data exchange for web applications, which can be adopted for solving the data exchange problems in distributed engineering applications. This paper presents a generic approach for reliable and efficient data exchange between engineering devices using existing middleware known from web applications. Different existing middleware is examined with respect to the suitability in engineering applications. In this paper, a suitable middleware is shown and a prototype implementation simulating distributed wind farm control is presented and validated using several performance measurements.}, subject = {Angewandte Informatik}, language = {en} } @inproceedings{HaefnerEckardtKoenke2003, author = {H{\"a}fner, Stefan and Eckardt, Stefan and K{\"o}nke, Carsten}, title = {A geometrical inclusion-matrix model for the finite element analysis of concrete at multiple scales}, doi = {10.25643/bauhaus-universitaet.301}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3018}, year = {2003}, abstract = {This paper introduces a method to generate adequate inclusion-matrix geometries of concrete in two and three dimensions, which are independent of any specific numerical discretization. The article starts with an analysis on shapes of natural aggregates and discusses corresponding mathematical realizations. As a first prototype a two-dimensional generation of a mesoscale model is introduced. Particle size distribution functions are analysed and prepared for simulating an adequate three-dimensional representation of the aggregates within a concrete structure. A sample geometry of a three-dimensional test cube is generated and the finite element analysis of its heterogeneous geometry by a uniform mesh is presented. Concluding, aspects of a multiscale analysis are discussed and possible enhancements are proposed.}, subject = {Beton}, language = {en} } @unpublished{MosaviTorabiHashemietal., author = {Mosavi, Amir and Torabi, Mehrnoosh and Hashemi, Sattar and Saybani, Mahmoud Reza and Shamshirband, Shahaboddin}, title = {A Hybrid Clustering and Classification Technique for Forecasting Short-Term Energy Consumption}, doi = {10.25643/bauhaus-universitaet.3755}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180907-37550}, abstract = {Electrical energy distributor companies in Iran have to announce their energy demand at least three 3-day ahead of the market opening. Therefore, an accurate load estimation is highly crucial. This research invoked methodology based on CRISP data mining and used SVM, ANN, and CBA-ANN-SVM (a novel hybrid model of clustering with both widely used ANN and SVM) to predict short-term electrical energy demand of Bandarabbas. In previous studies, researchers introduced few effective parameters with no reasonable error about Bandarabbas power consumption. In this research we tried to recognize all efficient parameters and with the use of CBA-ANN-SVM model, the rate of error has been minimized. After consulting with experts in the field of power consumption and plotting daily power consumption for each week, this research showed that official holidays and weekends have impact on the power consumption. When the weather gets warmer, the consumption of electrical energy increases due to turning on electrical air conditioner. Also, con-sumption patterns in warm and cold months are different. Analyzing power consumption of the same month for different years had shown high similarity in power consumption patterns. Factors with high impact on power consumption were identified and statistical methods were utilized to prove their impacts. Using SVM, ANN and CBA-ANN-SVM, the model was built. Sine the proposed method (CBA-ANN-SVM) has low MAPE 5 1.474 (4 clusters) and MAPE 5 1.297 (3 clusters) in comparison with SVM (MAPE 5 2.015) and ANN (MAPE 5 1.790), this model was selected as the final model. The final model has the benefits from both models and the benefits of clustering. Clustering algorithm with discovering data structure, divides data into several clusters based on similarities and differences between them. Because data inside each cluster are more similar than entire data, modeling in each cluster will present better results. For future research, we suggest using fuzzy methods and genetic algorithm or a hybrid of both to forecast each cluster. It is also possible to use fuzzy methods or genetic algorithms or a hybrid of both without using clustering. It is issued that such models will produce better and more accurate results. This paper presents a hybrid approach to predict the electric energy usage of weather-sensitive loads. The presented methodutilizes the clustering paradigm along with ANN and SVMapproaches for accurate short-term prediction of electric energyusage, using weather data. Since the methodology beinginvoked in this research is based on CRISP data mining, datapreparation has received a gr eat deal of attention in thisresear ch. Once data pre-processing was done, the underlyingpattern of electric energy consumption was extracted by themeans of machine learning methods to precisely forecast short-term energy consumption. The proposed approach (CBA-ANN-SVM) was applied to real load data and resulting higher accu-racy comparing to the existing models. 2018 American Institute of Chemical Engineers Environ Prog, 2018 https://doi.org/10.1002/ep.12934}, subject = {Data Mining}, language = {en} } @article{VoelskeGollubHagenetal., author = {V{\"o}lske, Michael and Gollub, Tim and Hagen, Matthias and Stein, Benno}, title = {A keyquery-based classification system for CORE}, series = {D-Lib Magazine}, journal = {D-Lib Magazine}, doi = {10.1045/november14-voelske}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170426-31662}, abstract = {We apply keyquery-based taxonomy composition to compute a classification system for the CORE dataset, a shared crawl of about 850,000 scientific papers. Keyquery-based taxonomy composition can be understood as a two-phase hierarchical document clustering technique that utilizes search queries as cluster labels: In a first phase, the document collection is indexed by a reference search engine, and the documents are tagged with the search queries they are relevant—for their so-called keyqueries. In a second phase, a hierarchical clustering is formed from the keyqueries within an iterative process. We use the explicit topic model ESA as document retrieval model in order to index the CORE dataset in the reference search engine. Under the ESA retrieval model, documents are represented as vectors of similarities to Wikipedia articles; a methodology proven to be advantageous for text categorization tasks. Our paper presents the generated taxonomy and reports on quantitative properties such as document coverage and processing requirements.}, subject = {Massendaten}, language = {en} } @article{HarirchianKumariJadhavetal., author = {Harirchian, Ehsan and Kumari, Vandana and Jadhav, Kirti and Raj Das, Rohan and Rasulzade, Shahla and Lahmer, Tom}, title = {A Machine Learning Framework for Assessing Seismic Hazard Safety of Reinforced Concrete Buildings}, series = {Applied Sciences}, volume = {2020}, journal = {Applied Sciences}, number = {Volume 10, issue 20, article 7153}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/app10207153}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20201022-42744}, pages = {18}, abstract = {Although averting a seismic disturbance and its physical, social, and economic disruption is practically impossible, using the advancements in computational science and numerical modeling shall equip humanity to predict its severity, understand the outcomes, and equip for post-disaster management. Many buildings exist amidst the developed metropolitan areas, which are senile and still in service. These buildings were also designed before establishing national seismic codes or without the introduction of construction regulations. In that case, risk reduction is significant for developing alternatives and designing suitable models to enhance the existing structure's performance. Such models will be able to classify risks and casualties related to possible earthquakes through emergency preparation. Thus, it is crucial to recognize structures that are susceptible to earthquake vibrations and need to be prioritized for retrofitting. However, each building's behavior under seismic actions cannot be studied through performing structural analysis, as it might be unrealistic because of the rigorous computations, long period, and substantial expenditure. Therefore, it calls for a simple, reliable, and accurate process known as Rapid Visual Screening (RVS), which serves as a primary screening platform, including an optimum number of seismic parameters and predetermined performance damage conditions for structures. In this study, the damage classification technique was studied, and the efficacy of the Machine Learning (ML) method in damage prediction via a Support Vector Machine (SVM) model was explored. The ML model is trained and tested separately on damage data from four different earthquakes, namely Ecuador, Haiti, Nepal, and South Korea. Each dataset consists of varying numbers of input data and eight performance modifiers. Based on the study and the results, the ML model using SVM classifies the given input data into the belonging classes and accomplishes the performance on hazard safety evaluation of buildings.}, subject = {Erdbeben}, language = {en} } @article{YangBudarapuMahapatraetal., author = {Yang, Shih-Wei and Budarapu, Pattabhi Ramaiah and Mahapatra, D.R. and Bordas, St{\´e}phane Pierre Alain and Zi, Goangseup and Rabczuk, Timon}, title = {A Meshless Adaptive Multiscale Method for Fracture}, series = {Computational Materials Science}, journal = {Computational Materials Science}, pages = {382 -- 395}, abstract = {A Meshless Adaptive Multiscale Method for Fracture}, subject = {Angewandte Mathematik}, language = {en} } @inproceedings{RickeltReese2004, author = {Rickelt, Christian and Reese, Stefanie}, title = {A model adaptive and model reduction strategy combining system-theoretical methods and substructuring}, doi = {10.25643/bauhaus-universitaet.151}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1516}, year = {2004}, abstract = {This paper focuses on a new three-level discretisation strategy which enables the transition between continuum/structural (I) and structural/black box modelling (II). The transition (I) is realised by means of a model adaptive concept based on an innovative finite element technology. For transition (II) we apply the truncated balanced realisation method (TBR). The latter represents an established system theoretical model reduction technique which is here combined with a novel substructure technique. The approach provides a modular concept to facilitate the computational analysis of complex structures. The final goal is to apply the strategy to life time estimation.}, subject = {Adaptives System}, language = {en} } @article{KarimimoshaverHajivalieiShokrietal., author = {Karimimoshaver, Mehrdad and Hajivaliei, Hatameh and Shokri, Manouchehr and Khalesro, Shakila and Aram, Farshid and Shamshirband, Shahaboddin}, title = {A Model for Locating Tall Buildings through a Visual Analysis Approach}, series = {Applied Sciences}, volume = {2020}, journal = {Applied Sciences}, number = {Volume 10, issue 17, article 6072}, publisher = {MDPI}, address = {Basel}, doi = {10.3390/app10176072}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20210122-43350}, pages = {1 -- 25}, abstract = {Tall buildings have become an integral part of cities despite all their pros and cons. Some current tall buildings have several problems because of their unsuitable location; the problems include increasing density, imposing traffic on urban thoroughfares, blocking view corridors, etc. Some of these buildings have destroyed desirable views of the city. In this research, different criteria have been chosen, such as environment, access, social-economic, land-use, and physical context. These criteria and sub-criteria are prioritized and weighted by the analytic network process (ANP) based on experts' opinions, using Super Decisions V2.8 software. On the other hand, layers corresponding to sub-criteria were made in ArcGIS 10.3 simultaneously, then via a weighted overlay (map algebra), a locating plan was created. In the next step seven hypothetical tall buildings (20 stories), in the best part of the locating plan, were considered to evaluate how much of theses hypothetical buildings would be visible (fuzzy visibility) from the street and open spaces throughout the city. These processes have been modeled by MATLAB software, and the final fuzzy visibility plan was created by ArcGIS. Fuzzy visibility results can help city managers and planners to choose which location is suitable for a tall building and how much visibility may be appropriate. The proposed model can locate tall buildings based on technical and visual criteria in the future development of the city and it can be widely used in any city as long as the criteria and weights are localized.}, subject = {Geb{\"a}ude}, language = {en} } @article{MostBucher, author = {Most, Thomas and Bucher, Christian}, title = {A moving least squares weighting function for the element-free Galerkin method which almost fulfills essential boundary conditions}, series = {Structural Engineering and Mechanics}, journal = {Structural Engineering and Mechanics}, pages = {315 -- 332}, abstract = {A moving least squares weighting function for the element-free Galerkin method which almost fulfills essential boundary conditions}, subject = {Angewandte Mathematik}, language = {en} } @inproceedings{BrackxDeKnockDeSchepper, author = {Brackx, Fred and De Knock, B. and De Schepper, Hennie}, title = {A MULTI--DIMENSIONAL HILBERT TRANSFORM IN ANISOTROPIC CLIFFORD ANALYSIS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2929}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29297}, pages = {15}, abstract = {In earlier research, generalized multidimensional Hilbert transforms have been constructed in m-dimensional Euclidean space, in the framework of Clifford analysis. Clifford analysis, centred around the notion of monogenic functions, may be regarded as a direct and elegant generalization to higher dimension of the theory of the holomorphic functions in the complex plane. The considered Hilbert transforms, usually obtained as a part of the boundary value of an associated Cauchy transform in m+1 dimensions, might be characterized as isotropic, since the metric in the underlying space is the standard Euclidean one. In this paper we adopt the idea of a so-called anisotropic Clifford setting, which leads to the introduction of a metric dependent m-dimensional Hilbert transform, showing, at least formally, the same properties as the isotropic one. The Hilbert transform being an important tool in signal analysis, this metric dependent setting has the advantage of allowing the adjustment of the co-ordinate system to possible preferential directions in the signals to be analyzed. A striking result to be mentioned is that the associated anisotropic (m+1)-dimensional Cauchy transform is no longer uniquely determined, but may stem from a diversity of (m+1)-dimensional "mother" metrics.}, subject = {Architektur }, language = {en} } @article{ElRayesHyari2004, author = {El-Rayes, Khaled and Hyari, Khalied}, title = {A Multi-objective Model for Optimizing Construction Planning of Repetitive Infrastructure Projects}, doi = {10.25643/bauhaus-universitaet.213}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2135}, year = {2004}, abstract = {This paper presents the development of a model for optimizing resource utilization in repetitive infrastructure projects. The model provides the capability of simultaneous minimization of both project duration and work interruptions for construction crews. The model provides in a single run, a set of nondominated solutions that represent the tradeoff between these two objectives. The model incorporates a multiobjective genetic algorithm and scheduling algorithm. The model initially generates a randomly selected set of solutions that evolves to a near optimal set of tradeoff solutions in subsequent generations. Each solution represents a unique scheduling solution that is associated with certain project duration and a number of interruption days for utilized construction crews. As such, the model provides project planners with alternative schedules along with their expected duration and resource utilization efficiency.}, subject = {Mehragentensystem}, language = {en} } @inproceedings{MostBucherMacke, author = {Most, Thomas and Bucher, Christian and Macke, M.}, title = {A NATURAL NEIGHBOR BASED MOVING LEAST SQUARES APPROACH WITH INTERPOLATING WEIGHTING FUNCTION}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2994}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29943}, pages = {17}, abstract = {The Element-free Galerkin Method has become a very popular tool for the simulation of mechanical problems with moving boundaries. The internally applied Moving Least Squares approximation uses in general Gaussian or cubic weighting functions and has compact support. Due to the approximative character of this method the obtained shape functions do not fulfill the interpolation condition, which causes additional numerical effort for the imposition of the essential boundary conditions. The application of a singular weighting function, which leads to singular coefficient matrices at the nodes, can solve this problem, but requires a very careful placement of the integration points. Special procedures for the handling of such singular matrices were proposed in literature, which require additional numerical effort. In this paper a non-singular weighting function is presented, which leads to an exact fulfillment of the interpolation condition. This weighting function leads to regular values of the weights and the coefficient matrices in the whole interpolation domain even at the nodes. Furthermore this function gives much more stable results for varying size of the influence radius and for strongly distorted nodal arrangements than classical weighting function types. Nevertheless, for practical applications the results are similar as these obtained with the regularized weighting type presented by the authors in previous publications. Finally a new concept will be presented, which enables an efficient analysis of systems with strongly varying node density. In this concept the nodal influence domains are adapted depending on the nodal configuration by interpolating the influence radius for each direction from the distances to the natural neighbor nodes. This approach requires a Voronoi diagram of the domain, which is available in this study since Delaunay triangles are used as integration background cells. In the numerical examples it will be shown, that this method leads to a more uniform and reduced number of influencing nodes for systems with varying node density than the classical circular influence domains, which means that the small additional numerical effort for interpolating the influence radius leads to remarkable reduction of the total numerical cost in a linear analysis while obtaining similar results. For nonlinear calculations this advantage would be even more significant.}, subject = {Architektur }, language = {en} } @article{Most, author = {Most, Thomas}, title = {A natural neighbour-based moving least-squares approach for the element-free Galerkin method}, series = {International Journal for Numerical Methods in Engineering}, journal = {International Journal for Numerical Methods in Engineering}, pages = {224 -- 252}, abstract = {A natural neighbour-based moving least-squares approach for the element-free Galerkin method}, subject = {Angewandte Mathematik}, language = {en} } @inproceedings{Montag1997, author = {Montag, U.}, title = {A New Efficient Concept for Elasto-plastic Simulations of Shell Responses}, doi = {10.25643/bauhaus-universitaet.436}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4364}, year = {1997}, abstract = {For the analysis of arbitrary, by Finite Elements discretized shell structures, an efficient numerical simulation strategy with quadratic convergence including geometrically and physically nonlinear effects will be presented. In the beginning, a Finite-Rotation shell theory allowing constant shear deformations across the shell thickness is given in an isoparametric formulation. The assumed-strain concept enables the derivation of a locking-free finite element. The Layered Approach will be applied to ensure a sufficiently precise prediction of the propagation of plastic zones even throughout the shell thickness. The Riks-Wempner-Wessels global iteration scheme will be enhanced by a Line-Search procedure to ensure the tracing of nonlinear deformation paths with rather great load steps even in the post-peak range. The elastic-plastic material model includes isotropic hardening. A new Operator-Split return algorithm ensures considerably exact solution of the initial-value problem even for greater load steps. The combination with consistently linearized constitutive equations ensures quadratic convergence in a close neighbourhood to the exact solution. Finally, several examples will demonstrate accuracy and numerical efficiency of the developed algorithm.}, subject = {Schale}, language = {en} } @article{SaadatfarKhosraviHassannatajJoloudarietal., author = {Saadatfar, Hamid and Khosravi, Samiyeh and Hassannataj Joloudari, Javad and Mosavi, Amir and Shamshirband, Shahaboddin}, title = {A New K-Nearest Neighbors Classifier for Big Data Based on Efficient Data Pruning}, series = {Mathematics}, volume = {2020}, journal = {Mathematics}, number = {volume 8, issue 2, article 286}, publisher = {MDPI}, doi = {10.3390/math8020286}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200225-40996}, pages = {12}, abstract = {The K-nearest neighbors (KNN) machine learning algorithm is a well-known non-parametric classification method. However, like other traditional data mining methods, applying it on big data comes with computational challenges. Indeed, KNN determines the class of a new sample based on the class of its nearest neighbors; however, identifying the neighbors in a large amount of data imposes a large computational cost so that it is no longer applicable by a single computing machine. One of the proposed techniques to make classification methods applicable on large datasets is pruning. LC-KNN is an improved KNN method which first clusters the data into some smaller partitions using the K-means clustering method; and then applies the KNN for each new sample on the partition which its center is the nearest one. However, because the clusters have different shapes and densities, selection of the appropriate cluster is a challenge. In this paper, an approach has been proposed to improve the pruning phase of the LC-KNN method by taking into account these factors. The proposed approach helps to choose a more appropriate cluster of data for looking for the neighbors, thus, increasing the classification accuracy. The performance of the proposed approach is evaluated on different real datasets. The experimental results show the effectiveness of the proposed approach and its higher classification accuracy and lower time cost in comparison to other recent relevant methods.}, subject = {Maschinelles Lernen}, language = {en} } @article{SchirmerOsburg, author = {Schirmer, Ulrike and Osburg, Andrea}, title = {A new method for the quantification of adsorbed styrene acrylate copolymer particles on cementitious surfaces: a critical comparative study}, series = {SN Applied Sciences}, volume = {2020}, journal = {SN Applied Sciences}, number = {Volume 2, article 2061}, publisher = {Springer}, address = {Heidelberg}, doi = {10.1007/s42452-020-03825-5}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20210804-44729}, pages = {1 -- 11}, abstract = {The amount of adsorbed styrene acrylate copolymer (SA) particles on cementitious surfaces at the early stage of hydration was quantitatively determined using three different methodological approaches: the depletion method, the visible spectrophotometry (VIS) and the thermo-gravimetry coupled with mass spectrometry (TG-MS). Considering the advantages and disadvantages of each method, including the respectively required sample preparation, the results for four polymer-modified cement pastes, varying in polymer content and cement fineness, were evaluated. To some extent, significant discrepancies in the adsorption degrees were observed. There is a tendency that significantly lower amounts of adsorbed polymers were identified using TG-MS compared to values determined with the depletion method. Spectrophotometrically generated values were ​​lying in between these extremes. This tendency was found for three of the four cement pastes examined and is originated in sample preparation and methodical limitations. The main influencing factor is the falsification of the polymer concentration in the liquid phase during centrifugation. Interactions in the interface between sediment and supernatant are the cause. The newly developed method, using TG-MS for the quantification of SA particles, proved to be suitable for dealing with these revealed issues. Here, instead of the fluid phase, the sediment is examined with regard to the polymer content, on which the influence of centrifugation is considerably lower.}, subject = {Zement}, language = {en} } @article{NguyenXuanRabczukNguyenThanhetal., author = {Nguyen-Xuan, Hung and Rabczuk, Timon and Nguyen-Thanh, Nhon and Nguyen-Thoi, T. and Bordas, St{\´e}phane Pierre Alain}, title = {A node-based smoothed finite element method (NS-FEM) for analysis of Reissner-Mindlin plates}, series = {Computational Mechanics}, journal = {Computational Mechanics}, pages = {679 -- 701}, abstract = {A node-based smoothed finite element method (NS-FEM) for analysis of Reissner-Mindlin plates}, subject = {Angewandte Mathematik}, language = {en} } @inproceedings{Oeljeklaus2003, author = {Oeljeklaus, Michael}, title = {A Non-Modal Structural-Damage-Location Method and its Application}, doi = {10.25643/bauhaus-universitaet.339}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3397}, year = {2003}, abstract = {The paper is about model based parameter identification and damage localization of elastomechanical systems using input and output measurements in the frequency domain. An adaptation of the Projective Input Residual Method to subsystem damage identification is presented. For this purpose the projected residuals were adapted with respect to a given subsystem to be analysed. Based on the gradients of these projected subsystem residuals a damage indicator was introduced which is sensitive to parameter changes and structural damages in this subsystem. Since the computations are done w.r.t. the smaller dimension of a subsystem this indicator shows a computational performance gain compared to the non-subsystem approach. This gain in efficiency makes the indicator applicable in online-monitoring and online-damage-diagnosis where continuous and fast data processing is required. The presented application of the indicator to a gantry robot could illustrate the ability of the indicator to indicate and locate real damage of a complex structure. Since in civil engineering applications the system input is often unknown, further investigations will focus on the output-only case since the generalization of the presented methods to this case will broaden its application spectrum.}, subject = {Bruchmechanik}, language = {en} } @phdthesis{Zhang, author = {Zhang, Yongzheng}, title = {A Nonlocal Operator Method for Quasi-static and Dynamic Fracture Modeling}, doi = {10.25643/bauhaus-universitaet.4732}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20221026-47321}, school = {Bauhaus-Universit{\"a}t Weimar}, abstract = {Material failure can be tackled by so-called nonlocal models, which introduce an intrinsic length scale into the formulation and, in the case of material failure, restore the well-posedness of the underlying boundary value problem or initial boundary value problem. Among nonlocal models, peridynamics (PD) has attracted a lot of attention as it allows the natural transition from continuum to discontinue and thus allows modeling of discrete cracks without the need to describe and track the crack topology, which has been a major obstacle in traditional discrete crack approaches. This is achieved by replacing the divergence of the Cauchy stress tensor through an integral over so-called bond forces, which account for the interaction of particles. A quasi-continuum approach is then used to calibrate the material parameters of the bond forces, i.e., equating the PD energy with the energy of a continuum. One major issue for the application of PD to general complex problems is that they are limited to fairly simple material behavior and pure mechanical problems based on explicit time integration. PD has been extended to other applications but losing simultaneously its simplicity and ease in modeling material failure. Furthermore, conventional PD suffers from instability and hourglass modes that require stabilization. It also requires the use of constant horizon sizes, which drastically reduces its computational efficiency. The latter issue was resolved by the so-called dual-horizon peridynamics (DH-PD) formulation and the introduction of the duality of horizons. Within the nonlocal operator method (NOM), the concept of nonlocality is further extended and can be considered a generalization of DH-PD. Combined with the energy functionals of various physical models, the nonlocal forms based on the dual-support concept can be derived. In addition, the variation of the energy functional allows implicit formulations of the nonlocal theory. While traditional integral equations are formulated in an integral domain, the dual-support approaches are based on dual integral domains. One prominent feature of NOM is its compatibility with variational and weighted residual methods. The NOM yields a direct numerical implementation based on the weighted residual method for many physical problems without the need for shape functions. Only the definition of the energy or boundary value problem is needed to drastically facilitate the implementation. The nonlocal operator plays an equivalent role to the derivatives of the shape functions in meshless methods and finite element methods (FEM). Based on the variational principle, the residual and the tangent stiffness matrix can be obtained with ease by a series of matrix multiplications. In addition, NOM can be used to derive many nonlocal models in strong form. The principal contributions of this dissertation are the implementation and application of NOM, and also the development of approaches for dealing with fractures within the NOM, mostly for dynamic fractures. The primary coverage and results of the dissertation are as follows: -The first/higher-order implicit NOM and explicit NOM, including a detailed description of the implementation, are presented. The NOM is based on so-called support, dual-support, nonlocal operators, and an operate energy functional ensuring stability. The nonlocal operator is a generalization of the conventional differential operators. Combining with the method of weighted residuals and variational principles, NOM establishes the residual and tangent stiffness matrix of operate energy functional through some simple matrix without the need of shape functions as in other classical computational methods such as FEM. NOM only requires the definition of the energy drastically simplifying its implementation. For the sake of conciseness, the implementation in this chapter is focused on linear elastic solids only, though the NOM can handle more complex nonlinear problems. An explicit nonlocal operator method for the dynamic analysis of elasticity solid problems is also presented. The explicit NOM avoids the calculation of the tangent stiffness matrix as in the implicit NOM model. The explicit scheme comprises the Verlet-velocity algorithm. The NOM can be very flexible and efficient for solving partial differential equations (PDEs). It's also quite easy for readers to use the NOM and extend it to solve other complicated physical phenomena described by one or a set of PDEs. Several numerical examples are presented to show the capabilities of this method. -A nonlocal operator method for the dynamic analysis of (thin) Kirchhoff plates is proposed. The nonlocal Hessian operator is derived from a second-order Taylor series expansion. NOM is higher-order continuous, which is exploited for thin plate analysis that requires \$C^1\$ continuity. The nonlocal dynamic governing formulation and operator energy functional for Kirchhoff plates are derived from a variational principle. The Verlet-velocity algorithm is used for time discretization. After confirming the accuracy of the nonlocal Hessian operator, several numerical examples are simulated by the nonlocal dynamic Kirchhoff plate formulation. -A nonlocal fracture modeling is developed and applied to the simulation of quasi-static and dynamic fractures using the NOM. The phase field's nonlocal weak and associated strong forms are derived from a variational principle. The NOM requires only the definition of energy. We present both a nonlocal implicit phase field model and a nonlocal explicit phase field model for fracture; the first approach is better suited for quasi-static fracture problems, while the key application of the latter one is dynamic fracture. To demonstrate the performance of the underlying approach, several benchmark examples for quasi-static and dynamic fracture are solved.}, subject = {Variationsprinzip}, language = {en} } @inproceedings{MoraisGeorgievSproessig, author = {Morais, Joao and Georgiev, Svetlin and Spr{\"o}ßig, Wolfgang}, title = {A NOTE ON THE CLIFFORD FOURIER-STIELTJES TRANSFORM}, series = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, booktitle = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, editor = {G{\"u}rlebeck, Klaus and Lahmer, Tom and Werner, Frank}, organization = {Bauhaus-Universit{\"a}t Weimar}, issn = {1611-4086}, doi = {10.25643/bauhaus-universitaet.2779}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170314-27794}, pages = {13}, abstract = {The purpose of this article is to provide an overview of the real Clifford Fourier- Stieltjes transform (CFST) and of its important properties. Additionally, we introduce the definition of convolution of Clifford functions of bounded variation.}, subject = {Angewandte Informatik}, language = {en} } @inproceedings{TahaSherifHegger2004, author = {Taha, M. M. Reda and Sherif, Alaa and Hegger, Josef}, title = {A nouvelle approach for predicting the shear cracking angle in RC and PC beams using artificial neural networks}, doi = {10.25643/bauhaus-universitaet.107}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1071}, year = {2004}, abstract = {The truss model for predicting shear resistance of reinforced concrete beams has usually been criticized because of its underestimation of the concrete shear strength especially for beams with low shear reinforcement. Two challengers are commonly encountered in any truss model and are responsible for its inaccurate shear strength prediction. First: the cracking angle is usually assumed empirically and second the shear contribution of the arching action is usually neglected. This research introduces a nouvelle approach, by using Artificial Neural Network (ANN) for accurately evaluating the shear cracking angle of reinforced and prestressed concrete beams. The model inputs include the beam geometry, concrete strength, the shear reinforcement ratio and the prestressing stress if any. ...}, subject = {Neuronales Netz}, language = {en} } @article{JiaZhangRabczuk, author = {Jia, Yue and Zhang, Yongjie and Rabczuk, Timon}, title = {A Novel Dynamic Multilevel Technique for Image Registration}, series = {Computers and Mathematics with Applications}, journal = {Computers and Mathematics with Applications}, abstract = {A Novel Dynamic Multilevel Technique for Image Registration}, subject = {Angewandte Mathematik}, language = {en} } @article{NguyenTuanLahmerDatchevaetal., author = {Nguyen-Tuan, Long and Lahmer, Tom and Datcheva, Maria and Stoimenova, Eugenia and Schanz, Tom}, title = {A novel parameter identification approach for buffer elements involving complex coupled thermo-hydro-mechanical analyses}, series = {Computers and Geotechnics}, journal = {Computers and Geotechnics}, pages = {23 -- 32}, abstract = {A novel parameter identification approach for buffer elements involving complex coupled thermo-hydro-mechanical analyses}, subject = {Angewandte Mathematik}, language = {en} } @article{IbanezKraus, author = {Ibanez, Stalin and Kraus, Matthias}, title = {A Numerical Approach for Plastic Cross Cross-Sectional Analyses of Steel Members}, series = {ce/papers}, volume = {2021}, journal = {ce/papers}, number = {Volume 4, issue 2-4}, publisher = {Ernst \& Sohn, a Wiley brand}, address = {Berlin}, doi = {10.1002/cepa.1527}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20220112-45622}, pages = {2098 -- 2106}, abstract = {Global structural analyses in civil engineering are usually performed considering linear-elastic material behavior. However, for steel structures, a certain degree of plasticization depending on the member classification may be considered. Corresponding plastic analyses taking material nonlinearities into account are effectively realized using numerical methods. Frequently applied finite elements of two and three-dimensional models evaluate the plasticity at defined nodes using a yield surface, i.e. by a yield condition, hardening rule, and flow rule. Corresponding calculations are connected to a large numerical as well as time-consuming effort and they do not rely on the theoretical background of beam theory, to which the regulations of standards mainly correspond. For that reason, methods using beam elements (one-dimensional) combined with cross-sectional analyses are commonly applied for steel members in terms of plastic zones theories. In these approaches, plasticization is in general assessed by means of axial stress only. In this paper, more precise numerical representation of the combined stress states, i.e. axial and shear stresses, is presented and results of the proposed approach are validated and discussed.}, subject = {Stahlkonstruktion}, language = {en} } @phdthesis{Hollberg, author = {Hollberg, Alexander}, title = {A parametric method for building design optimization based on Life Cycle Assessment}, doi = {10.25643/bauhaus-universitaet.3800}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180928-38000}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {262}, abstract = {The building sector is responsible for a large share of human environmental impacts. Architects and planners are the key players for reducing the environmental impacts of buildings, as they define them to a large extent. Life Cycle Assessment (LCA) allows for the holistic environmental analysis of a building. However, it is currently not employed to improve the environmental performance of buildings during the design process, although the potential for optimization is greatest there. One main reason is the lack of an adequate means of applying LCA in the architectural design process. As such, the main objective of this thesis is to develop a method for environmental building design optimization that is applicable in the design process. The key concept proposed in this thesis is to combine LCA with parametric design, because it proved to have a high potential for design optimization. The research approach includes the analysis of the characteristics of LCA for buildings and the architectural design stages to identify the research gap, the establishment of a requirement catalogue, the development of a method based on a digital, parametric model, and an evaluation of the method. An analysis of currently available approaches for LCA of buildings indicates that they are either holistic but very complex or simple but not holistic. Furthermore, none of them provide the opportunity for optimization in the architectural design process, which is the main research gap. The requirements derived from the analysis have been summarized in the form of a catalogue. This catalogue can be used to evaluate both existing approaches and potential methods developed in the future. In this thesis, it served as guideline for the development of the parametric method - Parametric Life Cycle Assessment (PLCA). The unique main feature of PLCA is that embodied and operational environmental impact are calculated together. In combination with the self-contained workflow of the method, this provides the basis for holistic, time-efficient environmental design optimization. The application of PLCA to three examples indicated that all established mandatory requirements are met. In all cases, environmental impact could be significantly reduced. In comparison to conventional approaches, PLCA was shown to be much more time-efficient. PLCA allows architects to focus on their main task of designing the building, and finally makes LCA practically useful as one of several criteria for design optimization. With PLCA, the building design can be time-efficiently optimized from the beginning of the most influential early design stages, which has not been possible until now. PLCA provides a good starting point for further research. In the future, it could be extended by integrating the social and economic aspects of sustainability.}, subject = {Bauentwurf}, language = {en} } @phdthesis{Hollberg, author = {Hollberg, Alexander}, title = {A parametric method for building design optimization based on Life Cycle Assessment - Appendix}, series = {A parametric method for building design optimization based on Life Cycle Assessment}, journal = {A parametric method for building design optimization based on Life Cycle Assessment}, doi = {10.25643/bauhaus-universitaet.2688}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20161101-26884}, abstract = {The building sector is responsible for a large share of human environmental impacts, over which architects and planners have a major influence. The main objective of this thesis is to develop a method for environmental building design optimization based on Life Cycle Assessment (LCA) that is applicable as part of the design process. The research approach includes a thorough analysis of LCA for buildings in relation to the architectural design stages and the establishment of a requirement catalogue. The key concept of the novel method called Parametric Life Cycle Assessment(PLCA) is to combine LCA with parametric design. The application of this method to three examples shows that building designs can be optimized time-efficiently and holistically from the beginning of the most influential early design stages, an achievement which has not been possible until now.}, subject = {{\"O}kobilanz}, language = {en} } @article{KerfridenGouryRabczuketal., author = {Kerfriden, Pierre and Goury, O. and Rabczuk, Timon and Bordas, St{\´e}phane Pierre Alain}, title = {A partitioned model order reduction approach to rationalise computational expenses in nonlinear fracture mechanics}, series = {Computer Methods in Applied Mechanics and Engineering}, journal = {Computer Methods in Applied Mechanics and Engineering}, pages = {169 -- 188}, abstract = {A partitioned model order reduction approach to rationalise computational expenses in nonlinear fracture mechanics}, subject = {Angewandte Mathematik}, language = {en} } @inproceedings{HalfmannRankGluecketal.2000, author = {Halfmann, Ansgar and Rank, Ernst and Gl{\"u}ck, M. and Breuer, M. and Durst, F.}, title = {A partitioned solution approach for the fluid-structure interaction of wind and thin-walled structures}, doi = {10.25643/bauhaus-universitaet.585}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5858}, year = {2000}, abstract = {In many engineering applications two or more different interacting systems require the numer-ical solution of so-called multifield problems. In civil engineering the interaction of fluid and structures plays an important role, i.e. for fabric tensile structures of light and flexible materials often used for large roof systems, capacious umbrellas or canopies. Whereas powerful numerical simulation techniques have been established in structural engineering as well as in fluid mechan-ics, only relatively few approaches to simulate the interaction of fluids with civil engineering constructions have been presented. To determine the wind loads on complex structures, it is still state-of-the-art to apply semi-empirical, strongly simplifying methods or to perform expensive ex-periments in wind tunnels. In this paper an approach of a coupled fluid-structure simulation will be presented for membrane and thin shell structures. The interaction is described by the struc-tural deformation as response to wind forces, resulting in a modification of the fluid flow domain. Besides a realistic determination of the wind loads, information on the structural stability can be obtained. The so-called partitioned solution is based on an iterative frame algorithm, integrating different codes for Computational Fluid Dynamics (CFD) and for Computational Structural Dy-namics (CSD) in an explicit or an implicit time-stepping procedure. All data exchange between the two different applications is performed via a neutral geometric model provided by a coupling interface. A conservative interpolation method is used for the interpolation of the nodal loads. The time-dependent motion of the structure requires a dynamic modification of the different grids and a redefinition of the Navier-Stokes equations in an Arbitrary Langrangian Eulerian (ALE) formulation. As an example for the present implementation, results of a coupled fluid-structure simulation for a textile membrane canopy will be presented.}, subject = {Tragwerk}, language = {en} } @inproceedings{RueppelMeissnerGreb2004, author = {Rueppel, Uwe and Meißner, Udo F. and Greb, Steffen}, title = {A Petri Net based Method for Distributed Process Modelling in Structural Engineering}, doi = {10.25643/bauhaus-universitaet.133}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1338}, year = {2004}, abstract = {The contribution introduces a method for the distributed process modelling in order to support the process orientation in Structural Engineering, i.e., the modelling, analysis and management of planning processes. The approach is based on the Petri Net theory for the modelling of planning processes and workflows in Structural Engineering. Firstly, a central and coarse process model serves as a pre-structuring system for the detailed modelling of the technical planning activities. Secondly, the involved planning participants generate distributed process models with detailed technical workflow information. Finally, these distributed process models will be combined in the central workflow net. The final net is of great importance for the process orientation in Structural Engineering, i.e., the identification, publication, analysis, optimization and finally the management of planning processes.}, subject = {Ingenieurbau}, language = {en} }