@phdthesis{Oetsch2004, author = {{\"O}tsch, Silke}, title = {{\"U}berw{\"a}ltigen und schmeicheln. Der physiologische, symbolische und ganzheitliche K{\"o}rper in der Architektur.}, doi = {10.25643/bauhaus-universitaet.659}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20050727-6926}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Der menschliche K{\"o}rper ist Bezugspunkt von repr{\"a}sentativen Str{\"o}mungen der zeitgen{\"o}ssischen Architektur, so lautet die Hauptthese der Dissertation. Bislang wurde das zeitgen{\"o}ssische architekturimmanente Konzept des K{\"o}rpers gr{\"o}ßtenteils selektiv und anhand wenig repr{\"a}sentativer Beispiele von der Kritik behandelt: Ein auf physiologische Gesichtspunkte reduzierter K{\"o}rper interagiert mit Bauten der klassischen Moderne oder neuen Medientechnologien. Eine umfassende Besch{\"a}ftigung mit theoretischen Konzepten des K{\"o}rpers und mit dem Fallbeispiel der zeitgen{\"o}ssischen Hotel- und Kasinoarchitektur in Las Vegas zeigt, dass der Begriff des K{\"o}rpers komplexer geworden ist, womit der Bezug zum K{\"o}rper weniger augenf{\"a}llig erscheint. Der Ansatz der Ph{\"a}nomenologie, Erkl{\"a}rungsmuster durch eine Hinwendung zum K{\"o}rper zu erhalten wird von verschiedenen Autoren in Frage gestellt. Wenn die Grenzen von K{\"o}rper bzw. Leib und Umwelt nicht mehr zu bestimmen sind, tauge der Begriff nicht als Letztbegr{\"u}ndung. Diese Kritik kann entkr{\"a}ftet werden, wenn auf das Modell der animate form der Philosophin Sheets-Johnstone zur{\"u}ckgegriffen wird. Dieses Konzept f{\"u}hrt {\"u}ber Merleau-Pontys K{\"o}rperbegriff hinaus, der Sheets-Johnstones Aussage nach abstrakt sei. Insbesondere eine Hinwendung zum taktil-kin{\"a}sthetischen K{\"o}rper liefert neue Perspektiven. Damit ist es sinnvoll, Architektur in ihrer Beziehung zum K{\"o}rper zu beurteilen, weil der K{\"o}rper definierbar und eingrenzbar ist. Anhand des Fallbeispiels der Hotel- und Kasinoarchitektur von Las Vegas kann aufzeigt werden, in welcher Weise sich Planer heute auf den K{\"o}rper beziehen. Architektur geht in einem Megamedium auf, umgesetzt mit unterschiedlichen Techniken der Umweltgestaltung. Sowohl die Quantit{\"a}t als auch die Qualit{\"a}t der eingesetzten Reize nimmt zu. Dabei werden vor allem Reize eingesetzt, die tendenziell unbewusst wahrgenommen werden. Neben der Abstimmung auf die Sinne und die physische Beschaffenheit wird die symbolische Pr{\"a}gung des K{\"o}rpers beachtet. W{\"u}nsche und Vorstellungen der Nutzer werden {\"u}ber Zielgruppenanalysen ermittelt und finden ihre Entsprechung in semiotischen Architekturelementen. Diese werden so gestaltet, dass der Nutzer den semiotischen Gehalt zugleich sinnlich erf{\"a}hrt. Dieses Konzept des K{\"o}rpers wird als ganzheitlicher K{\"o}rper bezeichnet. Aufschlussreich ist ein Vergleich mit Vorstellungen des K{\"o}rpers vorausgehender Phasen, so z.B. dem Modell, das sich aus Scott Brown, Venturi und Izenours Buch Learning from Las Vegas ableiten l{\"a}sst, und das sich ebenso aus Texten und Bauten von Zeitgenossen wie Lynch, Norberg-Schulz und Kahn herausarbeiten l{\"a}sst. {\"U}ber die Besch{\"a}ftigung der Architekturtheoretiker mit der Sinneswahrnehmung entsteht ein Bewusstsein f{\"u}r den Einfluss des Symbolischen, das eine subjektive, durch das soziale und kulturelle Umfeld gepr{\"a}gte Wahrnehmung hervorbringt. Der K{\"o}rper ist eingebettet in symbolische Systeme wie Konventionen und Traditionen, die sein Handeln bestimmen. Dahingegen beziehen sich Vertreter der klassischen Moderne haupts{\"a}chlich auf die physiologischen Eigenschaften des K{\"o}rpers, seine Abmessungen und Bewegungsabl{\"a}ufe, wie Texte, Bauten und Menschmodelle z.B. von Meyer, Neutra, Le Corbusier und Neufert zeigen. Es f{\"a}llt auf, dass in Texten {\"u}ber Architektur von Las Vegas h{\"a}ufig Begriffe vorkommen, die zugleich zentrale Termini der Ph{\"a}nomenologie sind, wie Atmosph{\"a}re und der englische Begriff experience. Es zeigt sich, dass sich die Bedeutungen der philosophischen Termini in der Architektur des Fallbeispiel widerspiegelt. Anders als die vorschnelle Etikettierung der Architekturstr{\"o}mung als „Erlebnisarchitektur" suggeriert, bezieht sich der Begriff experience auf eine Ausrichtung an der Erfahrung. Diese ist das Resultat der langfristigen Pr{\"a}gung einer konkreten Nutzergruppe durch den in der Umwelt agierenden und durch seine symbolische Pr{\"a}gung beeinflussten K{\"o}rper. Die Erfahrung impliziert das Erlebnis, als kurzfristige Interaktion von K{\"o}rper und Umwelt. Am Fallbeispiel kann außerdem gezeigt werden, dass Techniken zur Schaffung von Atmosph{\"a}ren eingesetzt werden. In Anlehnung an den Philosophen B{\"o}hme kennzeichnen sich Atmosph{\"a}ren durch eine besondere N{\"a}he von Architektur und K{\"o}rper. Die Tatsache, dass Architekten gezielt Atmosph{\"a}ren schaffen, die gemeinhin nicht der Str{\"o}mung der „Erlebnisarchitekur zugerechnet werden, weist darauf hin, dass sich das Leitbild des ganzheitlichen K{\"o}rpers in unterschiedlichen Kontexten findet. Im Gegensatz zu Thesen Eisenmans oder Jamesons, die eine Entfremdung von K{\"o}rper und Raum bzw. das Ende des anthropozentrischen Weltbilds feststellen, propagieren Planer wie Jerde die Herstellung von Architektur, die Nutzer und Umwelt in einer {\"u}bergeordneten Ganzheit vereint. Ganzheit kann aber trotz feinerer Abstimmung auf den K{\"o}rper nur grenzwertig erreicht werden, da Nutzer nicht vollst{\"a}ndig erfasst werden k{\"o}nnen, sich die Planungen auf bestimmte Zielgruppen beschr{\"a}nken und die Interessen von Planer und Nutzer verschieden sind.}, subject = {K{\"o}rper}, language = {de} } @inproceedings{ZwoelferThomasSchinketal.2004, author = {Zw{\"o}lfer, Michael and Thomas, Peter and Schink, Claus-J{\"u}rgen and Koch, Volker}, title = {Life cycle optimized system solutions for densified housing with massive wood technology}, doi = {10.25643/bauhaus-universitaet.98}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-980}, year = {2004}, abstract = {The objective of the joint project 'Life cycle optimised system solutions for densified housing with massive wood technology', short form Basys, was the development and application of an open building system for sustainable construction in a virtual enterprise. Four partners coming from building economy and a university institute developed the building system in a comprehensive planning process. By applying massive wood technology, most requirements of densified housing can be met and individual buildings can be produced on demand.}, subject = {Lebenszyklus }, language = {en} } @phdthesis{Zobel2004, author = {Zobel, Oliver Christian}, title = {Typologie und Topologie der Pflegebed{\"u}rftigkeit und -infrastruktur im Freistaat Th{\"u}ringen; Explorative Analysen zu pflegebed{\"u}rftigen Menschen und Pflegeinfrastrukturen,ein Beitrag zur empirischen Regionalforschung und Landeskunde}, doi = {10.25643/bauhaus-universitaet.228}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20041207-2353}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Der Autor, Berater und Gutachter f{\"u}r das Th{\"u}ringer Ministerium f{\"u}r Soziales und Gesundheit und Mitverfasser der Th{\"u}ringer Landespflegepl{\"a}ne, systematisiert und analysiert die Struktur und Situation pflegebed{\"u}rftiger Menschen und deren Inanspruchnahme sozialer Pflegeinfrastrukturen im r{\"a}umlichen und demographischen Kontext. Im Mittelpunkt dieser regionalwissenschaftlichen Forschungsarbeit stehen r{\"a}umliche Disparit{\"a}ten der Versorgungs- und Angebotssicherung sowie bisher kaum betrachtete r{\"a}umliche Strukturen und Interdependenzen der Pflegebed{\"u}rftigkeit und Pflegeleistungen. Hierzu wurden vom Autor mehrere regional differenzierte Datenerhebungen aller teilstation{\"a}ren und vollstation{\"a}ren pflegebed{\"u}rftigen Menschen und der Pflegeinfrastruktureinrichtungen im Freistaat Th{\"u}ringen durchgef{\"u}hrt.Durch die Integration explorativer Analysemethoden in die empirische Regionalforschung wird die Pflegelandschaft Th{\"u}ringens f{\"u}r den Zeitraum 1994 bis 2000 dokumentiert und anhand eines relationalen Indikatorensystems die Strukturen und r{\"a}umlichen Muster der Pflegebed{\"u}rftigkeit und -infrastruktur, soziodemographischen und raumstrukturellen Einflusskomponenten sowie pflegespezifische Interdependenzen exploriert und analysiert. Ein Ergebnis sind typologische Aussagen zum Alter, zur Pflegeart und -schwere oder Struktur der Pflegeleistungen in einer hochaufl{\"o}senden topologischen Differenzierung nach regionaler Herkunft pflegebed{\"u}rftiger Menschen. So hat die Einf{\"u}hrung der Pflegeversicherung die Situation der meisten pflegebed{\"u}rftigen Menschen in Th{\"u}ringen deutlich verbessert. In der Zeitreihenuntersuchung treten diese Anfangserfolge aber hinter identifizierten Problemlagen aus z.B. sukzessiver Polarisierung der Pflegeleistungen, wachsenden Infrastrukturdisparit{\"a}ten mit exakt quantifizierbaren Wanderungsbewegungen pflegebed{\"u}rftiger Menschen zur{\"u}ck. Ein Ergebnis topologischer Analysen sind regionale (Versorgungs-) Disparit{\"a}ten, die zu nachgewiesenen Wanderungsbewegungen pflegebed{\"u}rftiger Menschen f{\"u}hren.So resultiert die noch nachweisbare Leistungs- bzw. Funktionsf{\"a}higkeit der Pflegelandschaft Th{\"u}ringens (im Sinne der pflegerischen Grundversorgung einer Teilkaskoversicherung) prim{\"a}r aus noch g{\"u}nstigen Rahmenbedingungen wie dem „selbstverst{\"a}ndlich" erbrachten informellen Pflegeleistungen (der Frauen und T{\"o}chter) und nur sekund{\"a}r (oder kaum) aus der durchaus noch guten finanziellen Situation der Pflegeversicherung. Ferner konnte gezeigt werden, dass wachsende Versorgungsdisparit{\"a}ten nur anteilig eine Infrastrukturproblematik darstellen.Die Ergebnisse werden im Hinblick auf die entwickelten Methoden und weiteren Untersuchungen diskutiert und im Kontext des theoretischen Teils u.a. zur Entwicklung der Altenhilfe, Pflegeversicherung und sozialen Infrastrukturversorgung betrachtet und vor den Konsequenzen des demographischen Wandels reflektiert. Mit den Untersuchungsergebnissen fordert der Autor, dass Alterung und Schrumpfung der Bev{\"o}lkerung in Teilr{\"a}umen als dominante Entwicklung nicht verleugnet werden darf, damit durch eine integrative Gesamtsicht einer auch sozial nachhaltigen Raumentwicklung die pflegespezifische Forderung nach einem m{\"o}glichst selbstbestimmten und selbst{\"a}ndigen Leben (im eigenen Haushalt) gewahrt und das Grundrecht auf W{\"u}rde auch pflegebed{\"u}rftiger Menschen gew{\"a}hrleistet bleibt.Dazu wird vorgeschlagen, mit einer modernen Regionalforschung, die durch hochaufl{\"o}sende Datenerfassung, neuen explorativen statistischen Analysemethoden und in Verbindung mit aussagekr{\"a}ftigen Visualisierungsverfahren ein qualifiziertes Monitoring- und Analysesystem f{\"u}r die Raumbeobachtung aufzubauen, um Problemregionen rechzeitig identifizieren und Planungen zeitnah initiieren zu k{\"o}nnen.}, subject = {Raumforschung}, language = {de} } @phdthesis{Zierold2004, author = {Zierold, Sabine}, title = {Der mediale Raum der Architektur}, doi = {10.25643/bauhaus-universitaet.767}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20060806-8106}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Der architektonische Raum wird als ein Medium der Kommunikation im Kontext der >neuen< Medien begriffen, aus der Erkenntnis, dass er schon immer ein Medium war und aus einer komplexen Medienstruktur in Abh{\"a}ngigkeit von anderen Medien besteht. Im Prozess von Handlung und Kommunikation ist der architektonische Raum das Medium, das r{\"a}umliche N{\"a}he von Individuen {\"u}ber alle Sinne und das Bewusstsein gleichzeitig intensiv erm{\"o}glicht. Der architektonische Raum als immersives Kommunikationsmedium erreicht im Zeitalter der >neuen< Medien eine neue Dimension, indem mehr und andere Wirklichkeitsalternativen der Kommunikation zur Verf{\"u}gung stehen. N. Luhmann folgend, wird die Architektur aus der Sicht der Form/Medium-Differenz systemtheoretisch als strukturierter M{\"o}glichkeitsraum betrachtet. Der Raum ist das Medium f{\"u}r Formen des architektonischen Raumes, in dem Architektur {\"u}berhaupt erst wirksam wird. Umgekehrt sind die Formen des architektonischen Raumes Medien f{\"u}r die Wahrnehmung einer Vielzahl von r{\"a}umlichen Wirklichkeiten. Eine Fassade aus Stein oder Glas ist gebaute Form und kann als Medium Information kommunizieren. Medien werden ihrer Bestimmung um so besser gerecht, je mehr sie sich der Aufmerksamkeit entziehen und wie transparente Fenster hinter der Oberfl{\"a}che der sinnlichen Wahrnehmung zur{\"u}cktreten. Als >unwahrnehmbares< Medium ist der architektonische Raum damit eine hintergr{\"u}ndige >Wirkungsmacht<, eine B{\"u}hne f{\"u}r die Entfaltung von Wirkung, Atmosph{\"a}re und Bewegung. Seine physische Wirklichkeit war schon immer durch virtuelle Wirklichkeiten oder Realit{\"a}ten entgrenzt, die durch Techniken und Technologien der Simulation als k{\"u}nstliche Welten wahrnehmbar und kommunizierbar werden. Dies kann an tradierten Beispielen der gotischen Kathedrale, dem Panorama, den panoptischen R{\"a}umen, dem Theater, Kino oder den kontinuierlichen R{\"a}umen von der Moderne bis heute aufgezeigt weren. Virtuelle R{\"a}ume gotischer Glasbilder oder barocker Decken- und Wandbilder im Medium des architektonischen Raumes sind uns gel{\"a}ufig. Die Immersion, das Eintauchen in diese virtuellen Wirklichkeitssp{\"a}ren l{\"o}st die Wahrnehmung der eigenen k{\"o}rperlichen Pr{\"a}senz in ihnen aus. Das Potential des virtuellen Raumes der Architektur besteht im Vergleich zu anderen virtuellen Realit{\"a}ten von Text, Bild oder digitalen Medien in seiner Gebundenheit an die physische, r{\"a}umliche Reizstruktur, der er die Eindringlichkeit und Komplexit{\"a}t seiner Wirkung verdankt. Es werden unterschiedliche Wechselwirkungen und gemeinsame Entwicklungen von zeitgen{\"o}ssischen Beispielen der Architektur mit den >neuen< Medien aufgezeigt. In der »sensitiven Wand« wird die physische Raumgrenze durch die Integration neuer Techniken und Technologien digitaler, elektronischer Medien etwas extrem Flexibles und Formbares in Interaktion mit dem Benutzer. Der H2O Pavillon (Oosterhuis und NOX, 1997) ist ein Beispiel daf{\"u}r. Der ausgepr{\"a}gt polysensorische Immersionsraum steht f{\"u}r die Einheit von digitaler und architektonischer Simulation. Die metaphorische Welt von H{\"o}hle und Quelle des Thermalbades Vals (P.Zumthor, 1996) ist die r{\"a}umliche Reflexion auf die metaphorische Struktur virtueller R{\"a}ume der >neuen< Medien. Die simulierte Wirklichkeit in den Medien Wasser, Stein und architektonischer Raum produziert sch{\"o}pferisch den polysensorischen immersiven Zugang in die virtuellen Welten >authentischer< physischer Umgebung. Das >Sichtbare< im Medium Raum der Architektur ist ohne das >Unsichtbare< nicht zu begreifen bzw. das sinnlich Wahrnehmbare nicht ohne das Unwahrnehmbare. Das Erkennen dieser Relation von Form und Medium erm{\"o}glicht die Formulierung des neuen Begriffes des medialen Raumes der Architektur, der zur Basis f{\"u}r eine Medientheorie der Architektur wird, als Sichtweise der Entgrenzung des physischen Raumes durch den virtuellen Raum f{\"u}r die subjektive Wahrnehmung, Handlung und Kommunikation.}, subject = {Architektur}, language = {de} } @article{ZavadskasKaklauskasViteikiene2004, author = {Zavadskas, Edmundas Kazimieras and Kaklauskas, Arturas and Viteikiene, Milda}, title = {Database of Best Practices and Decision Support Web-based System for Construction Innovation}, doi = {10.25643/bauhaus-universitaet.217}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2173}, year = {2004}, abstract = {Many construction and facilities management Web sites can be found on the Internet. The interested parties on construction and facilities management Web sites can find databases of best practices, calculators, analyzers, software, expert and decision support systems, neural networks, etc. Technological innovation mainly through changes in the availability of information and communication technology inclusive databases of best practices, calculators, analyzers, software, neural networks, decision support and expert systems that have been provided by a variety of new services developed by the construction and facilities management sectors. Most of all calculators, analyzers, software, decision support and expert systems, neural networks and on-line systems seek to find out how to make the most economic decisions and most of all these decisions are intended only for economic objectives. Alternatives under evaluation have to be evaluated not only from the economic position, but take into consideration qualitative, technical, technological and other characteristics as well. Based on the analysis of the existing calculators, analyzers, information, expert and decision support systems, neural networks and in order to determine most efficient versions of best practices a Decision Support Web-Based System for Construction Innovation (IDSS) was developed by Vilnius Gediminas Technical University.}, subject = {Mehragentensystem}, language = {en} } @article{ZavadskasKaklauskas2004, author = {Zavadskas, Edmundas Kazimieras and Kaklauskas, Arturas}, title = {Civil Engineering Decision Support Systems in Lithuania}, doi = {10.25643/bauhaus-universitaet.257}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2579}, year = {2004}, abstract = {Civil engineering decision support systems (construction, building life cycle, refurbishment, total quality management, innovation, etc.) created in Lithuania are described in this paper. The above decision support systems comprise of the following constituent parts: data (database and its management system), models (model base and its management system) and a user interface. Presentation of information in databases may be in conceptual (digital, textual, graphical, photographic, video) and quantitative forms. Quantitative information presented involves criteria systems and subsystems, units of measurement, values and initial weight fully defining the variants provided. The databases were developed providing a multiple criteria analysis of alternatives from economical, infrastructure, technical, technological, qualitative, legislative, social and other perspectives. This information is provided in a user-oriented way. Since the analysis of alternatives is usually performed by taking into account economical, infrastructure, technical, technological, qualitative and other factors, a model-base include models which enable a decision maker to carry out a comprehensive analysis of the variants available and make a proper choice. These systems, related questions and practical case study were analysed the paper.}, subject = {Wissensmanagement}, language = {en} } @inproceedings{ZarliStorerKazi2004, author = {Zarli, Alain and Storer, Graham and Kazi, Abdul Samad (Sami)}, title = {Building a Better Future: Major Results from the ICCI Cluster Project}, doi = {10.25643/bauhaus-universitaet.199}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1994}, year = {2004}, abstract = {To support research in the building sector and in order to help it move towards a new digital economy, the European Commission under the 5th Framework initiative, especially the IST programme, funded various RTD projects. The opportunity to bring these IST projects together was acknowledged so that stronger links can be created under a clustering umbrella and that, moreover, links of those projects with their RTD environment could be facilitated. This has been the objective of work carried out within the ICCI (IST-2001-33022) Cluster project. This paper introduces the main aims and objectives of the project, and then presents its principal outcomes. In a second part, it synthesises the underlying concepts, technology and tools that will make ICT-based Construction a reality in a near future, and gives recommended actions for the industry, the EC and the Construction ICT R\&D in Europe, giving some benefit of this project experience to the three communities.}, subject = {Forschung}, language = {en} } @inproceedings{Zaneldin2004, author = {Zaneldin, Essam}, title = {Investigate the Impact of Different Resource Allocation Strategies on the Design of Building Projects Using Simulation}, doi = {10.25643/bauhaus-universitaet.165}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1658}, year = {2004}, abstract = {The design of building projects involves several types of resources such as architects, structural engineers, mechanical engineers, electrical engineers, and draftsmen, among others. For design firms to stay in business in this very competitive market, they need to manage their resources in a way that improves productivity and cost effectiveness. This task, however, is not simple and requires thorough analysis of process-level operations, resource use, and productivity. Typically, these operational aspects are the responsibility of the design office manager who assigns available resources to the different design projects to save time and lower design expenses. It is noted that limited studies have been carried out in the literature to model overall organizational operations and behavioral aspects, particularly in firms specialized in the design of building projects. In an effort to simplify the modeling process, a simplified modeling and simulation tool is used in this research. A simulation model representing an actual design office was developed assuming that the office performs designs for small, medium, and large size building projects. The developed model was used to simulate several alternatives and examine various resource assignment strategies. The simulation was conducted over ten years and the resulting productivity and income was measured.}, subject = {Baubetrieb}, language = {en} } @inproceedings{YamabeKawamuraTani2004, author = {Yamabe, Yuichiro and Kawamura, Hiroshi and Tani, Akinori}, title = {Optimal Design for Recurrent Architecture Network Harmonized with Circulation-type Societies by Applying Genetic Algorithms to Multiagent Model}, doi = {10.25643/bauhaus-universitaet.189}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1892}, year = {2004}, abstract = {In this paper, a circulation-type society is expressed by recurrent architecture network described with multi-agent model which consists of the following agents: user, builder, reuse maker, fabricator, waste disposer, material maker and earth bank (see Fig.1). Structural members, materials, resources and monies move among these agents. Each agent has its own rules and aims, regarding structural damages, lifetime, cost reduction, numbers of structural members and structural systems. Reasonable prices of members (fresh, reused, recycled and disposed) can be optimized by GAs in this system considering equal distribution of monies among agents.}, subject = {Mehragentensystem}, language = {en} } @inproceedings{YahiaouiHensenSoethout2004, author = {Yahiaoui, Azzedine and Hensen, Jan and Soethout, Luc}, title = {Developing CORBA-based distributed control and building performance environments by run-time coupling}, doi = {10.25643/bauhaus-universitaet.134}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1347}, year = {2004}, abstract = {Communication software and distributed applications for control and building performance simulation software must be reliable, efficient, flexible, and reusable. This paper reports on progress of a project, which aims to achieve better integrated building and systems control modeling in building performance simulation by run-time coupling of distributed computer programs. These requirements motivate the use of the Common Object Request Broker Architecture (CORBA), which offers sufficient advantage than communication within simple abstraction. However, set up highly available applications with CORBA is hard. Neither control modeling software nor building performance environments have simple interface with CORBA objects. Therefore, this paper describes an architectural solution to distributed control and building performance software tools with CORBA objects. Then, it explains how much the developement of CORBA based distributed building control simulation applications is difficult. The paper finishes by giving some recommendations.}, subject = {Ingenieurbau}, language = {en} } @article{YabukiYoshimura2004, author = {Yabuki, Nobuyoshi and Yoshimura, Yutaka}, title = {An Evaluation System for Steel Structures of Hydroelectric Power Stations based on Fault Tree Analysis and Performance Maps}, doi = {10.25643/bauhaus-universitaet.256}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2564}, year = {2004}, abstract = {This paper presents an evaluation system for steel structures of hydroelectric power stations, including hydraulic gates and penstocks, based on Fault Tree Analyasis (FTA) and performance maps. This system consists of fault tree diagrams of FTA, performance maps, design and analysis systems, and engineerin databases. These four modules are integrated by appropriate hyperlinks so that the user of this system can use it easily and seamlessly. A well developed system was applied to some illustrative example cases, and they showed that the developed methodology and system worked well and the users found the system useful and effective for their maintenance tasks at powerstations.}, subject = {Wissensmanagement}, language = {en} } @article{YabukiKotaniShitani2004, author = {Yabuki, Nobuyoshi and Kotani, Jun and Shitani, Tomoaki}, title = {A Steel Bridge Design System Architecture using VR-CAD and Web Service-based Multi-Agents}, doi = {10.25643/bauhaus-universitaet.214}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2146}, year = {2004}, abstract = {This paper presents a new design environment based on Multi-Agents and Virtual Reality (VR). In this research, a design system with a virtual reality function was developed. The virtual world was realized by using GL4Java, liquid crystal shutter glasses, sensor systems, etc. And the Multi-Agent CAD system with product models, which had been developed before, was integrated with the VR design system. A prototype system was developed for highway steel plate girder bridges, and was applied to a design problem. The application verified the effectiveness of the developed system.}, subject = {Mehragentensystem}, language = {en} } @inproceedings{XieIssaO'Brien2004, author = {Xie, Haiyan and Issa, Raja and O'Brien, William}, title = {Structure of a Formal User Model for Construction Information Retrieval}, doi = {10.25643/bauhaus-universitaet.129}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1296}, year = {2004}, abstract = {Information science researchers and developers have spent many years addressing the problem of retrieving the exact information needed and using it for analysis purposes. In informationseeking dialogues, the user, i.e. construction project manager or supplier, often asks questions about specific aspects of the tasks they want to perform. But most of the time it is difficult for the software systems to unambiguously understand their overall intentions. The existence of information tunnels (Tannenbaum 2002) aggravates this phenomenon. This study includes a detailed case study of the material management process in the construction industry. Based on this case study, the structure of a formal user model for information retrieval in construction management is proposed. This prototype user model will be incorporated into the system design for construction information management and retrieval. This information retrieval system is a user-centered product based on the development of a user configurable visitor mechanism for managing and retrieving project information without worrying too much about the underlying data structure of the database system. An executable UML model combined with OODB is used to reduce the ambiguity in the user's intentions and to achieve user satisfaction.}, subject = {Bauwerk}, language = {en} } @misc{Woehlecke2004, type = {Master Thesis}, author = {W{\"o}hlecke, Guido}, title = {Numerische Auswertung des Einflusses von Baugrundkenngr{\"o}ßen auf die Erstellung von Baugrundmodellen f{\"u}r ein Linienbauwerk}, doi = {10.25643/bauhaus-universitaet.673}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6732}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Die Entstehung des Baugrundes ist gepr{\"a}gt durch die Genese und von anthropogenen Einfl{\"u}ssen. In der Arbeit werden auf der Grundlage isotroper Betrachtungen im Halbraum Prognosen f{\"u}r unbeprobte Bereiche eines linienf{\"o}rmigen Bauwerkes erstellt. Aufbauend auf dem bekannten Algorithmus der Geostatistik werden Berechnungen mit deterministischen Eingangsgr{\"o}ßen durchgef{\"u}hrt. Diese sind in einem Datensatz zusammengefasst und gehen ohne Unterteilung bzw. Bildung von (Homogen)Bereichen in die Sch{\"a}tzungen ein. Zur Anwendung kam dabei die an der Professur Grundbau der Bauhaus-Universit{\"a}t Weimar entwickelte Software GeoStat. Nach der Variogrammanalyse folgten geostatistische Berechnungen mit dem Ordinary und dem Universal Kriging. Der genutzte Datensatz unterlag dabei mehrfachen Modifikationen, um Unterschiede in der Ergebnisbildung beobachten zu k{\"o}nnen. Die Krigingsch{\"a}tzungen wurden f{\"u}r subjektiv ausgew{\"a}hlte Beprobungspunkte erstellt, die mit Referenzprofilen verglichen werden konnten. Im Ergebnis traten f{\"u}r alle durchgef{\"u}hrten Simulationen erhebliche Abweichungen der berechneten Werte zu den Referenzprofilen auf. Die Verwendung von Datens{\"a}tzen ohne eine vorherige Bearbeitung und Unterteilung in Homogenbereiche erweist sich als nicht ratsam. Vielmehr ist es notwendig kompliziertere Krigingvarianten einzusetzen bzw. die benutzten Methoden mit anderen Verfahren zu kombinieren.}, subject = {Geostatistik}, language = {de} } @phdthesis{Wuttke2004, author = {Wuttke, Frank}, title = {Beitrag zur Standortidentifizierung mit Oberfl{\"a}chenwellen}, doi = {10.25643/bauhaus-universitaet.653}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20050708-6874}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {In der Dissertation wurden unterschiedliche Methoden zur Standortidentifizierung mit Oberfl{\"a}chenwellen analysiert. Es wurden neue Methoden zur Parameteridentifikation unter Nutzung von Oberfl{\"a}chenwellen vorgeschlagen. Die Ziele der Arbeit k{\"o}nnen wie folgt definiert werden: a) Die Entwicklung eines geeigneten theoretischen Modells als Grundlage zur Untersuchung des Standortes hinsichtlich vorhandener Bodensteifigkeiten. b) Die Entwicklung einer neuen Inversionsmethodik unter Ber{\"u}cksichtigung aller auftretenden Moden im Oberfl{\"a}chenwellenfeld. Die Erstellung eines Modells des vertikal heterogenen Untergrundes erfolgte im Frequenz-bereichs f{\"u}r beliebig geschichtete B{\"o}den, aufbereitet durch weitestgehend analytische Formulierungen. Durch Nutzung beliebiger horizontaler, elastisch-isotroper Schichten konnte die vertikale Heterogenit{\"a}t approximiert werden. Die Definition der Green'schen Funktionen wurde in Form der Reflexions- und Transmissionskoeffizienten durchgef{\"u}hrt. Die L{\"o}sung des formulierten Halbraumproblems erfolgte unter Verwendung der Konturintegration. Dazu wurde die Vorgehensweise der bestehenden L{\"o}sung des homogenen Halbraums auf das Problem des geschichteten Mediums {\"u}bertragen. Die daraus sich ergebende L{\"o}sung ist in ein K{\"o}rperwellen- und ein Oberfl{\"a}chenwellenfeld separiert. Der Vorteil dieser analytischen Betrachtungsweise liegt in der eindeutigen Zuordnungsm{\"o}glichkeit der erhaltenen L{\"o}sungen zu Wellentypen und in der klaren Dispersionscharakteristik der berechneten Modelle. Im Gegensatz dazu liefern numerische L{\"o}sungen, wie FEM, immer ein Wellenfeld, in dem die Wellentypen zugeordnet bzw. interpretiert werden m{\"u}ssen. Mit Hilfe der synthetischen Bodenmodellierung wird das Verhalten von geschichteten B{\"o}den bei durchlaufenden Oberfl{\"a}chenwellenfeldern simuliert und untersucht. F{\"u}r die Untersuchung der Profile wurde haupts{\"a}chlich die Modale Superposition von Oberfl{\"a}chenwellen und die Wellenzahl-Integration verwendet. Bei der Analyse von Oberfl{\"a}chenwellenfeldern in vorhandenen Medien sind abweichend von den {\"u}blichen seismischen Methoden spezielle Untersuchungsmethoden zur Ermittlung der vorhandenen Dispersion notwendig. Zur Durchf{\"u}hrung der Dispersionsanalyse wird in geotechnischen Untersuchungen in der Regel das Phasen-Differenzen-Verfahren (SASW) genutzt. Aufgrund der beschr{\"a}nkten Aussagef{\"a}higkeit dieses Verfahrens zu auftretenden h{\"o}heren Moden werden verbesserte Analysemethoden zur experimentellen Auswertung hinzugezogen. Diese Methoden nutzen zur Informationsgewinnung das r{\"a}umlich ausgedehnte Wellenfeld. Ausgehend von dem Dispersionsverhalten kann die Bodenstruktur mittels inverser Methoden bestimmt werden. F{\"u}r die gemeinsame Inversion der in den Messungen vorhandenen Moden wurde ein entsprechendes Inversionsverfahren abgeleitet. Als Grundlage der Inversion wurde ein Verfahren des kleinsten Fehlerquadrates gew{\"a}hlt. Der Vorteil hinsichtlich einer effizienten und stabilen Inversion unter Nutzung dieser Methodik {\"u}berwiegt den Nachteil der lokalen Suche nach dem Fehlerminimum. Zum Erreichen der stabilen und zielgerichteten Inversion wird der Levenberg-Marquardt Algorithmus, zusammen mit der Wichtung der Dispersions{\"a}ste entsprechend ihres Anregungsverhaltens in den Dispersionsspektren, eingesetzt. Von Vorteil hat sich innerhalb der Arbeit die gleichzeitige Behandlung von theoretischen und experimentellen Parameterstudien erwiesen, da sich Ergebnisse und Erkenntnisse beider Seiten erg{\"a}nzten. Eine Interpretation von Felddaten kann damit weitaus sicherer durchgef{\"u}hrt werden. Zus{\"a}tzlich konnten die erarbeiteten experimentellen und theoretischen Verfahren gegenseitig {\"u}berpr{\"u}ft werden.}, subject = {Inversionsalgorithmus}, language = {de} } @phdthesis{Winkelmann2004, author = {Winkelmann, Arne}, title = {Das Pionierlager Artek. Realit{\"a}t und Utopie in der sowjetischen Architektur der sechziger Jahre}, doi = {10.25643/bauhaus-universitaet.86}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20040817-878}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Das in den 1960er Jahren gebaute, internationale Pionierlager Artek an der Schwarzmeerk{\"u}ste der Krim war das gr{\"o}ßte Kinderferienlager der Sowjetunion. Als Prestigeobjekt und Vorzeigeinstitution steht Artek f{\"u}r die Architektur der {\"A}ra Chruschtschows, des sogenannten „Tauwetters". Anhand des dialektischen Prinzips von Pr{\"a}sentation und Repr{\"a}sentation werden vier Aspekte des Lagers untersucht: Architektur, st{\"a}dtebauliche Struktur, Erziehung und Gesamtkunstwerk. Durch dieses Prinzip, das sich aus der Widerspiegelungstheorie ableiten l{\"a}ßt, kann jedem dieser Aspekte die Kongruenz zur ideologischen Zielsetzung und damit die gestalterische Koh{\"a}renz der Ferienanlage nachgewiesen werden. In Abgrenzung zur modernen Architektur der westlichen Industrienationen wurde in Artek eine spezifisch „sozialistische Moderne" f{\"u}r die Sowjetunion und die {\"u}brigen Staaten des Ostblocks definiert. Diese war eng verbunden mit dem St{\"a}dtebau auf der Grundlage von Mikrorayons und der Ausgestaltung von Stadt- und Subzentren. Artek ist mit seiner idealtypischen, architektonischen und st{\"a}dtebaulichen Gestaltung ein Denkmal f{\"u}r die fr{\"u}here Sowjetunion.}, subject = {Entstalinisierung}, language = {de} } @inproceedings{WilsonDamodaranOlphert2004, author = {Wilson, Ian E. and Damodaran, Leela and Olphert, Wendy}, title = {ICT Adoption in the Construction Sector: Education and Training Issues}, doi = {10.25643/bauhaus-universitaet.201}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2013}, year = {2004}, abstract = {Organisational and human issues have been highlighted, among other issues (ICT infrastructures, legal and contractual, etc.), as key elements in enhancing the competitiveness of the construction sector. More specifically, the importance of human resources has been recognised, especially training and professional development, in order to cultivate a stable workforce. The paper provides a review of the key training needs for the construction sector with particular reference to the uptake and exploitation of new technologies and working practices, presents an action plan to address learning and training needs, and proposes an eight-stage iterative learning and training methodology. The results will be of particular interest to managers in stakeholder organisations of all sizes throughout the sector, plus academic and research bodies intending to continue construction ICT research.}, subject = {Forschung}, language = {en} } @article{WillenbacherHuebler2004, author = {Willenbacher, Heiko and H{\"u}bler, Reinhard}, title = {Intelligent Link-Management for the Support of Integration in Building Life Cycle}, doi = {10.25643/bauhaus-universitaet.222}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2223}, year = {2004}, abstract = {The processes in the life cycle of buildings are characterised by highly distinct teamwork. The integration of all the distributed working participants, by providing an environment, which especially supports the communication and collaboration between the actors, is a fundamental step to improve the efficiency of the involved processes and to reduce the total costs. In this article, a link based modelling approach and its "intelligent" link management is introduced (1). This approach realises an integration environment based on a special building model that acts as a decision support system. The link-based modelling is characterised by the definition and specialisation of links between partial models. These intelligent managed links enable a very flexible and task specific data access and exchange between all the different views and partial models of the participants.}, subject = {Mehragentensystem}, language = {en} } @inproceedings{Weyhe2004, author = {Weyhe, Stefan}, title = {Qualit{\"a}tssicherung in der Bauausf{\"u}hrung}, doi = {10.25643/bauhaus-universitaet.721}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7219}, year = {2004}, abstract = {Baum{\"a}ngel und Bausch{\"a}den in der Bauwirtschaft, Auswirkungen von Liberalisierung und Deregulierung auf die Bauqualit{\"a}t, Grundlagen zur Theorie der Bauqualit{\"a}t, die Praxis der baubegleitenden Qualit{\"a}tssicherung, Kritik an der baubegleitenden Qualit{\"a}tssicherung, Folgerungen f{\"u}r neue Ans{\"a}tze}, subject = {Baubetriebslehre}, language = {de} } @inproceedings{WenderDonathPetzold2004, author = {Wender, Katrin and Donath, Dirk and Petzold, Frank}, title = {Preparation and provision of building information for planning within existing built contexts}, doi = {10.25643/bauhaus-universitaet.182}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1829}, year = {2004}, abstract = {A prerequisite for planning within existing built contexts is precise information regarding the building substance, its construction and materials, possible damages and any modifications and additions that may have occurred during its lifetime. Using the information collected in a building survey the user should be able to "explore" the building in virtual form, as well as to assess the information contained with regard to a specific planning aspect. The functionality provided by an information module should cover several levels of information provision ranging from 'simple retrieval' of relevant information to the analysis and assessment of stored information with regard to particular question sets. Through the provision of basic functionality at an elementary level and the ability to extend this using plug-ins, the system concept of an open extendable system is upheld. Using this modular approach, different levels of information provision can be provided as required during the planning process.}, subject = {Architektur}, language = {en} } @inproceedings{WellmannJelicBaitschHartmann2004, author = {Wellmann Jelic, Andres and Baitsch, Matthias and Hartmann, Dietrich}, title = {Distributed computing of failure probabilities for structures in civil engineering}, doi = {10.25643/bauhaus-universitaet.103}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1030}, year = {2004}, abstract = {In this contribution the software design and implementation of an analysis server for the computation of failure probabilities in structural engineering is presented. The structures considered are described in terms of an equivalent Finite Element model, the stochastic properties, like e.g. the scatter of the material behavior or the incoming load, are represented using suitable random variables. Within the software framework, a Client-Server-Architecture has been implemented, employing the middleware CORBA for the communication between the distributed modules. The analysis server offers the possibility to compute failure probabilities for stochastically defined structures. Therefore, several different approximation (FORM, SORM) and simulation methods (Monte Carlo Simulation and Importance Sampling) have been implemented. This paper closes in showing several examples computed on the analysis server.}, subject = {Konzipieren }, language = {en} } @article{WeiseKatranuschkovScherer2004, author = {Weise, Matthias and Katranuschkov, Peter and Scherer, Raimar J.}, title = {Generic Services for the Support of Evolving Building Model Data}, doi = {10.25643/bauhaus-universitaet.207}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2077}, year = {2004}, abstract = {Many problems related to data integration in AEC can be better tackled by an approach that takes into account the heterogeneity of tasks, models and applications but does not require continuous consistency of the evolving design data, at each data management operation. Such an approach must incorporate adequate services that can facilitate reintegration of concurrently modified data at reasonably selected coordination points. In this paper we present a set of methods which, used in combination, can achieve that goal. After a description of the principal envisaged cooperative work scenario each of these methods is discussed in detail and current observations drawn from their software realisation are given. Whilst the suggested approach is valid for any EXPRESS-based data model, the practical focus of work has been on facilitating IFC-driven integration.}, subject = {Produktmodell}, language = {en} } @inproceedings{WardThorpePrice2004, author = {Ward, Michael and Thorpe, Tony and Price, Andrew}, title = {The Re-use of Site Data to Inform Business Processes}, doi = {10.25643/bauhaus-universitaet.130}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1308}, year = {2004}, abstract = {The increased implementation of site data capture technologies invariably results in an increase in data warehousing and database technologies to store captured data. However, restricted use of data beyond the initial application could potentially result in a loss of understanding of site processes. This could in turn lead to poor decision making at production, tactical and strategic levels. Concrete usage data have been collected from two piling processes. These data have been analysed and the results highlighted potential improvements that could be made to existing site management and estimating processes. A cost benefit analysis has been used to support decision making at the strategic level where the identified improvements require capital expenditure.}, subject = {Bauwerk}, language = {en} } @phdthesis{Wagner2004, author = {Wagner, Sebastian}, title = {MANFRED LEHMBRUCK - Ein Architekt der Moderne}, doi = {10.25643/bauhaus-universitaet.739}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20060313-7773}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Diese erste umfassende Monographie {\"u}ber den Architekten, Professor und Museumsmann Manfred Lehmbruck (Paris 1913 - Stuttgart 1992) konzentriert sich neben dem Lebensweg und den theoretischen Arbeiten Lehmbrucks zum Museumsbau auf die drei realisierten Museumsbauten: das Reuchlinhaus Pforzheim, das Wilhelm-Lehmbruck-Museum Duisburg und das Federseemuseum Bad Buchau. Aber auch die drei anderen bedeutenden Geb{\"a}udeensembles, die Pausa AG M{\"o}ssingen, die Berufsschule und das Stadtbad Stuttgart-Feuerbach und der Solit{\"a}r der Mittelschule in M{\"o}ssingen, alle fertiggestellt in den Sechziger Jahren des letzten Jahrhunderts, werden ausf{\"u}hrlich besprochen. Das umfassende Werkverzeichnis im Anhang zeigt deutlich den Einfluß, den seine Lehrer, allen voran Ludwig Mies van der Rohe, aber auch Heinrich Tessenow, Paul Bonatz und Auguste Perret, auf die Architektursprache Lehmbrucks gehabt haben.}, subject = {Architekturwettbewerb}, language = {de} } @article{Volkova2004, author = {Volkova, Viktorija}, title = {The analysis of dynamic behaviour of pre-stressed systems under polyharmonic excitations}, doi = {10.25643/bauhaus-universitaet.265}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2656}, year = {2004}, abstract = {Pre-stressed structural elements are widely used in large-span structures. As a rule, they have higher stiffness characteristics. Pre-stressed rods can be applied as girders of different purpose, and as their separate parts, e.g. rods of trusses and frames. Among numerous ways of prestressing the compression of girders, trusses, and frames by tightenings from high-strength materials is under common application.}, subject = {Verkehrsplanung}, language = {en} } @article{VogelBreitMaerki2004, author = {Vogel, Manfred and Breit, Manfred and M{\"a}rki, Fabian}, title = {Optimization of 4D Process Planning using Genetic Algorithms}, doi = {10.25643/bauhaus-universitaet.236}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2360}, year = {2004}, abstract = {The presented work focuses on the presentation of a discrete event simulator which can be used for automated sequencing and optimization of building processes. The sequencing is based on the commonly used component-activity-resource relations taking structural and process constraints into account. For the optimization a genetic algorithm approach was developed, implemented and successfully applied to several real life steel constructions. In this contribution we discuss the application of the discrete event simulator including its optimization capabilities on a 4D process model of a steel structure of an automobile recycling facility.}, subject = {Produktmodell}, language = {en} } @article{vanTreeckRank2004, author = {van Treeck, Christoph and Rank, Ernst}, title = {Analysis of building structure and topology based on Graph Theory}, doi = {10.25643/bauhaus-universitaet.230}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2308}, year = {2004}, abstract = {Individual views on a building product of people involved in the design process imply different models for planning and calculation. In order to interpret these geometrical, topological and semantical data of a building model we identify a structural component graph, a graph of room faces, a room graph and a relational object graph as aids and we explain algorithms to derive these relations. The application of the technique presented is demonstrated by the analysis and discretization of a sample model in the scope of building energy simulation.}, subject = {Produktmodell}, language = {en} } @inproceedings{vanRooyenOlivier2004, author = {van Rooyen, G.C. and Olivier, A. H.}, title = {Notes on structural analysis in a distributed collaboratory}, doi = {10.25643/bauhaus-universitaet.145}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1451}, year = {2004}, abstract = {The worldwide growth of communication networks and associated technologies provide the basic infrastructure for new ways of executing the engineering process. Collaboration amongst team members seperated in time and location is of particular importance. Two broad themes can be recognized in research pertaining to distributed collaboration. One theme focusses on the technical and technological aspects of distributed work, while the other emphasises human aspects thereof. The case of finite element structural analysis in a distributed collaboratory is examined in this paper. An approach is taken which has its roots in human aspects of the structural analysis task. Based on experience of how structural engineers currently approach and execute this task while utilising standard software designed for use on local workstations only, criteria are stated for a software architechture that could support collaborative structural analysis. Aspects of a pilot application and the results of qualitative performance measurements are discussed.}, subject = {Ingenieurbau}, 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} } @inproceedings{TsouLamWong2004, author = {Tsou, Jin-Yeu and Lam, Selina and Wong, Wing Kin Gary}, title = {Design of Rapidly Assembled Isolation Patient Ward - IT-Supported Collaborative Design Process between Architects and Medical Officers}, doi = {10.25643/bauhaus-universitaet.174}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1748}, year = {2004}, abstract = {An important feature of the 2003 SARS outbreak in Canada, Singapore, and Hong Kong was that many health care workers (HCWs) developed SARS after caring for patients with SARS. This has been ascribed to inadequate or ineffective patient isolation. However, it is difficult for dense cities to provide sufficient isolation facilities within a short period of time. This has raised concerns from the public for new strategies in the planning and design of isolation facilities. Considering that SARS or other infectious diseases could seriously damage our society's development, isolation facilities that could be rapidly and economically constructed with appropriate environmental controls are essential. For this reason, the design team of the Department of Architecture collaborated with a special task force from the Faculty of Medicine, who are the frontline medical officers treating the SARS patients, to design Rapidly Assembled Isolation Patient Wards. Both architecture and medicine are well established disciplines, but they have little in common in terms of the mode of knowledge construction and practice. This induced much intellectual exploration and research interest in conducting this study. The process has provided an important reference for cross disciplinary studies between the architectural and medical domains.}, subject = {Architektur}, language = {en} } @inproceedings{TonnWolkowiczThurow2004, author = {Tonn, Christian and Wolkowicz, Christian and Thurow, Torsten}, title = {Plausibility in Architectural Design - DOMEdesign - Software Support for the formal shaping and architect-oriented design of shell structures}, doi = {10.25643/bauhaus-universitaet.181}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1812}, year = {2004}, abstract = {Complex gridshell structures used in architecturally ambitious constructions remain as appealing as ever in the public realm. This paper describes the theory and approach behind the software realisation of a tool which helps in finding the affine self-weight geometry of gridshell structures. The software tool DOMEdesign supports the formal design process of lattice and grid shell structures based upon the laws of physics. The computer-aided simulation of suspension models is used to derive structurally favourable forms for domes and arches subject to compression load, based upon the input of simple architectonic parameters. Irregular plans, three-dimensional topography, a choice different kinds of shell lattice structures and the desired height of the dome are examples of design parameters which can be used to modify the architectural design. The provision of data export formats for structural dimensioning and visualisation software enables engineers and planners to use the data in future planning and to communicate the design to the client.}, subject = {Architektur}, language = {en} } @inproceedings{ThurowDonath2004, author = {Thurow, Torsten and Donath, Dirk}, title = {A vision of an adaptive geometry model for computer-assisted building surveying}, doi = {10.25643/bauhaus-universitaet.172}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1722}, year = {2004}, abstract = {The paper describes a concept for the step-by-step computer-aided capture and representation of geometric building data in the context of planning-oriented building surveying. Selected aspects of the concept have been implemented and tested as prototypes. The process of step-by-step capture and representation is determined by the order in which the user experiences the building. Only the information that the user knows (can see) or can reasonably deduce is represented. In addition approaches to the flexible combination of different measuring techniques and geometric abstractions are described which are based upon geodetic computational adjustment.}, subject = {Architektur}, language = {en} } @phdthesis{Thurow2004, author = {Thurow, Torsten}, title = {Digitaler Architekturbestand - Untersuchungen zur computergest{\"u}tzten, schrittweisen Erfassung und Abbildung der Geometrie von Geb{\"a}uden im Kontext der planungsrelevanten Bauaufnahme}, doi = {10.25643/bauhaus-universitaet.140}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20041025-1380}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Die Arbeit beschreibt ein Konzept zur computergest{\"u}tzten, schrittweisen Erfassung und Abbildung der Geometrie von Geb{\"a}uden im Kontext der planungsrelevanten Bauaufnahme. Zun{\"a}chst wird die Bauaufnahme als Erstellung eines verwendungsspezifischen Modells betrachtet. Anschließend wird der Fokus auf das geometrische Abbild gelegt. Es werden u.a. die Aufmaßtechniken Handaufmaß, Tachymetrie und Photogrammetrie bewertet und geb{\"a}udetypische geometrische Abstraktionen aufgelistet. Danach erfolgt eine Aufstellung von Anforderungen an ein computergest{\"u}tztes Aufmaßsystem, welche mit kommerziellen L{\"o}sungen aus dem nichtgeod{\"a}tischen Bereich verglichen wird. Im Hauptteil wird das zu Beginn genannte Konzept beschrieben. Betrachtet wird die skizzenbasierte Erstellung eines nichtmaßlichen geometrischen Abbildes des Geb{\"a}udes in den Fr{\"u}hphasen der Bauaufnahme, seine anschließende schrittweise maßliche Anpassung an das Original und topologische Detaillierung im Zuge des Bauaufmaßes, sowie die Extraktion von Bauteilen und ihren geometrischen Parametern. Zur Vereinfachung der maßlichen Anpassung des geometrischen Abbildes im Aufmaßprozeß werden geometrische Abstraktionen wie Parallelit{\"a}ten, rechte Winkel usw. genutzt, aber nicht erzwungen. Mit Hilfe der Ausgleichungsrechnung erfolgt eine Zusammenf{\"u}hrung der geometrischen Abstraktionen und verschiedener Aufmaßtechniken. Es werden die n{\"o}tigen Beobachtungsgleichungen und andere relevante Aspekte beschrieben. Gezeigt wird weiter ein Konzept, wie ein nutzerseitig ver{\"a}nderbares Bauwerksmodell mit dem geometrischen Abbild in Bezug gebracht werden kann, wobei aus dem geometrischen Abbild geometrische Parameter des nutzerseitig ver{\"a}nderbaren Bauwerkmodells gewonnen werden k{\"o}nnen. Ausgesuchte Problematiken der Arbeit wurden prototypisch implementiert und getestet. Hierbei stand die Verbindung der Aufmaßtechniken und geometrischen Abstraktionen im Mittelpunkt. Die geometrischen Ans{\"a}tze der Arbeit beschr{\"a}nken sich auf planare Oberfl{\"a}chen.}, subject = {Bauaufnahme}, language = {de} } @article{TakagiTaniKawamura2004, author = {Takagi, Kousuke and Tani, Akinori and Kawamura, Hiroshi}, title = {Research on Intelligent Fuzzy Optimal Active and Hybrid Control Systems of Building Structures - Verification of Optimization Method on Switching Rules of Control Forces}, doi = {10.25643/bauhaus-universitaet.223}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2238}, year = {2004}, abstract = {Recently, many reseraches on active control systems of building structures are preformed based on modern control theory and are installed real buildings. The authors have already proposed intelligent fuzzy optimal active control (IFOAC) systems. IFOAC systems imitate intelligent activities of human brains such as prediction, adaptation, decision-kaking and so on. In IFOAC systems, objective and subjective judgements on the active control can be taken into account. However, IFOAC systems are considered to be suitable for far-field erathquake and control effect becomes small in case of near-field earthqaukes which include a few velosity pules with large amplitudes. To improve control effect in case of near-souece earthquakes, the authors have also proposed hybrid control (HC) systems, in which IFOAC systems and fuzzy control system are combined. In HC systems, the fuzzy control systems are introduced as a reflective fuzzy active control (RFAC) system and imitates spinal reflection of human. In HC systems, active control forces are activated to buildings in accordance with switching rules on active control forces. In this paper, optimizations on fuzzy control rules in RFAC system and switching rules of active control forces in HC system are performed by Parameter-Free Genetic Algorithms (PfGAs). Here, the optimization is performed by using different earthquake inputs. The results of digital simulations show that the HC system can reduce maximal response displacements under restrictions on strokes of the actuator effectively in case of a near-source earthquake and the effectiveness of the proposed HC system is discussed and clarified.}, subject = {Mehragentensystem}, 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} } @inproceedings{SwaddiwudhipongThoLiu2004, author = {Swaddiwudhipong, Somsak and Tho, Kee Kiat and Liu, Zishun}, title = {Material characterization using artificial neural network}, doi = {10.25643/bauhaus-universitaet.155}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1550}, year = {2004}, abstract = {Indentation experiments have been carried out over the past century to determine hardness of materials. Modern indentation machines have the capability to continuously monitor load and displacement to high precision and accuracy. In recent years, research interests have focussed on methods to extract material properties from indentation load-displacement curves. Analytical methods to interpret the indentation load-displacement curves are difficult to formulate due to material and geometric nonlinearities as well as complex contact interactions. In the present study, an artificial neural network model was constructed for interpretation of indentation load-displacement curves. Large strain-large deformation finite element analyses were first carried out to simulate indentation experiments. The data from finite element analyses were then used to train the artificial neural network model. The artificial neural network model was able to accurately determine the material properties when presented with load-displacement curves which were not used in the training process. The proposed artificial neural network model is robust and directly relates the characteristics of the indentation loaddisplacement curve to the elasto-plastic material properties.}, subject = {Neuronales Netz}, language = {en} } @inproceedings{Suzuki2004, author = {Suzuki, Aketo}, title = {Numerical Analysis for Prediction as to Influence of Digging a Tunnel on Groundwater}, doi = {10.25643/bauhaus-universitaet.113}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1133}, year = {2004}, abstract = {This paper describes monitoring of the in-valley discharge and underground water level at the place where the tunnel will be constructed and also, the numerical analysis for prediction applying the Tank Model and Linear Filter Method to calculate the prediction. The application of these analyses has actually allowed the change of underground water level to be grasped and more effective information system to be established by comparing the real-time monitoring data with the real-time calculation of prediction.}, subject = {Mobile Computing}, language = {en} } @article{StaubFrench2004, author = {Staub-French, Sheryl}, title = {Feature-based Product Modeling for Building Construction}, doi = {10.25643/bauhaus-universitaet.233}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2331}, year = {2004}, abstract = {Current building product models explicitly represent components, attributes of components, and relationships between components. These designer-focused product models, however, do not represent many of the design conditions that are important for construction, such as component similarity, uniformity, and penetrations. Current design and construction tools offer limited support for detecting these construction-specific design conditions. This paper describes the ontology we developed using the manufacturing concept of features to represent the design conditions that are important for construction. The feature ontology provides the blueprint for the additions and changes needed to transform a standard product model into a constructionspecific product model. The ontology formalizes three classes of features, defines the attributes and functions of each feature type, and represents the relationships between features explicitly. The descriptive semantics of the ontology allows practitioners to represent their varied preferences for naming features, specifying features that result from component intersections and the similarity of components, and grouping features that affect a specific construction domain. A software prototype that implements the ontology enables practitioners to transform designer-focused product models into feature-based product models that represent the construction perspective.}, subject = {Produktmodell}, language = {en} } @inproceedings{SoibelmanO'BrienElvin2004, author = {Soibelman, Lucio and O'Brien, William and Elvin, George}, title = {Collaborative Design Processes: A Class on Concurrent Collaboration in Multidisciplinary Design}, doi = {10.25643/bauhaus-universitaet.194}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1948}, year = {2004}, abstract = {The rise of concurrent engineering in construction demands early team formation and constant communication throughout the project life cycle, but educational models in architecture, engineering and construction have been slow to adjust to this shift in project organization. Most students in these fields spend the majority of their college years working on individual projects that do not build teamwork or communication skills. Collaborative Design Processes (CDP) is a capstone design course where students from the University of Illinois at Urbana-Champaign and the University of Florida learn methods of collaborative design enhanced by the use of information technology. Students work in multidisciplinary teams to collaborate from remote locations via the Internet on the design of a facility. An innovation of this course compared to previous efforts is that students also develop process designs for the integration of technology into the work of multidisciplinary design teams. The course thus combines both active and reflective learning about collaborative design and methods. The course is designed to provide students the experience, tools, and methods needed to improve design processes and better integrate the use of technology into AEC industry work practices. This paper describes the goals, outcomes and significance of this new, interdisciplinary course for distributed AEC education. Differences from existing efforts and lessons learned to promote collaborative practices are discussed. Principal conclusions are that the course presents effective pedagogy to promote collaborative design methods, but faces challenges in both technology and in traditional intra-disciplinary training of students.}, subject = {Hochschulbildung}, language = {en} } @article{ShihLee2004, author = {Shih, Naai-Jung and Lee, Wen-Pang}, title = {Particle Simulation and Evaluation of Personal Exposure to Contaminant Sources in an Elevation Space}, doi = {10.25643/bauhaus-universitaet.237}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2376}, year = {2004}, abstract = {An elevator, which figures a small volume, is normally used by everyone for a short period of time and equipped with simple ventilation system..Any contaminant released within it may cause serious problem. This research adapt a fire and smoke simulation software (FDS) into non-fire indoor airflow scario. Differently from previous research, particles are chosen as a risk evalution unit. A personal and multi-personal exposure model is proposed. The model takes the influence of the human thermal boundary, coughing, inhalation, exhalation, standing position, and the fan factor into account. The model is easy-to-use and suitable for the design of elevator system in practice.}, subject = {Produktmodell}, language = {en} } @article{SemenovBazhanMorozov2004, author = {Semenov, Vitaly and Bazhan, Andrew and Morozov, Sergey}, title = {Distributed STEP-Compliant Platform for Multimodal Collaboration in Architecture, Engineering, and Construction}, doi = {10.25643/bauhaus-universitaet.261}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2616}, year = {2004}, abstract = {This paper presents an innovative software platform OpenSTEP intended to build advanced distributed integrated systems and to conduct multidisciplinary collaborative projects in both academy and industry. The paper discusses an open system architecture, methodology, component library and CASE toolkit enabling the developers to build a wide range of interoperable applications and systems compliant with STEP and, particularly, with IFC becoming the increasingly important standard for information integration in architecture, engineering and construction.}, subject = {Framework }, language = {en} } @article{SemenovAlekseevaTarlapan2004, author = {Semenov, Vitaly and Alekseeva, Elena and Tarlapan, Oleg}, title = {Virtual Construction using Map-based Approach}, doi = {10.25643/bauhaus-universitaet.244}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2447}, year = {2004}, abstract = {The paper presents a general map-based approach to prototyping of products in virtual reality environments. Virtual prototyping of products is considered as a consistent simulation and visualization process mapping the source product model into its target visual representations. The approach enables to interrelate formally the product and visual information models with each other by defining mapping rules, to specify a prototyping scenario as a composition of map instances, and then to explore particular product models in virtual reality environments by interpreting the composed scenario. Having been realized, the proposed approach provides for the strongly formalized method and the common software framework to build virtual prototyping applications. As a result, the applications gain in expressiveness, reusability and reliability, as well as take on additional runtime flexibility...}, subject = {Produktmodell}, language = {en} } @inproceedings{Schaeffler2004, author = {Sch{\"a}ffler, Michael}, title = {Fachkunde des Generalunternehmers versus Fachkunde des Fachbetriebes - Praxisbericht zur Ausf{\"u}hrung eines GU-Auftrages}, doi = {10.25643/bauhaus-universitaet.719}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7195}, year = {2004}, abstract = {M{\"o}glichkeiten der Projektrealisierung: Einzelvergabe der Planungs- und Bauaufgaben, Vergabe aller Planungs- und Bauaufgaben an einen Generalunternehmer. Die fr{\"u}hzeitige Einbindung eines erfahrenen und fachkundigen Generalunternehmers gibt dem Auftraggeber die M{\"o}glichkeit, bei minimiertem Risiko zu einer wirtschaftlich und bautechnisch optimalen L{\"o}sung seiner Bauaufgabe zu kommen.}, subject = {Baubetriebslehre}, language = {de} } @misc{Schweigel2004, type = {Master Thesis}, author = {Schweigel, Stefan}, title = {Aufnahme des Baufortschritts in verteilter Umgebung}, doi = {10.25643/bauhaus-universitaet.153}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1534}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Als Folge des hohen Termindrucks w{\"a}hrend des Bauablaufes, ist es besonders wichtig den Fortschritt eines Bauvorhabens zeitnah zu {\"u}berwachen. Auf Großbaustellen kann die effektive Kontrolle nicht mehr ohne technische Hilfsmittel durchgef{\"u}hrt werden. Die Arbeit stellt verschiedene Szenarien f{\"u}r die verteilte Fortschrittserfassung vor und untersucht welche Anforderungen an ein System f{\"u}r die verteilte Erfassung gestellt werden. Dazu wird zuerst das bestehende CVS-System analysiert, um anschließend daraus ein Konzept f{\"u}r die Versionierung von Objekten und den automatischen Abgleich von Objektversionen zu entwickeln. Sp{\"a}ter wird gezeigt, wie dieses Konzept mit Hilfe von C\# und dem Microsoft®-.NET-Framework umgesetzt werden kann.}, subject = {Computer Supported Cooperative Work}, language = {de} } @phdthesis{ScholzSolbach2004, author = {Scholz-Solbach, Kai}, title = {Thermische Effekte der tiefgr{\"u}ndigen Bodenstabilisierung mit Branntkalk-Boden-S{\"a}ulen}, doi = {10.25643/bauhaus-universitaet.416}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20050307-3972}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Gegenstand der Arbeit ist die Untersuchung der bei der Herstellung von Branntkalk-Boden-S{\"a}ulen auftretenden thermischen Effekte und ihres Einflusses auf Wasser- und Wasserdampftransporte im Boden. Die Erw{\"a}rmung beruht vorrangig auf einer chemischen Reaktion, bei der das dem Boden zugemischte Calciumoxid mit Bodenwasser unter Freisetzung von W{\"a}rmeenergie zu Calciumhydroxid reagiert. Hierzu wurden zun{\"a}chst die thermischen Eigenschaften feink{\"o}rniger B{\"o}den und ihre Beeinflussung durch das Herstellen des Bindemittel-Boden-Gemisches in situ untersucht. Weiterhin wurden Untersuchungen zum zeitlichen Verlauf der chemischen Reaktion und zur Gr{\"o}ße der dabei freigesetzten Reaktionsw{\"a}rme vorgenommen. Mit dem Vorhaben, die mit der S{\"a}ulenherstellung einhergehenden Temperaturfeld{\"a}nderungen zu erfassen, wurden danach die thermischen Anfangs- und Randbedingungen des Bodens und der Bodenoberfl{\"a}che untersucht und festgelegt. Anschließend wurden die zeitabh{\"a}ngigen Temperaturfeld{\"a}nderungen auf der Grundlage der W{\"a}rme{\"u}bertragung durch W{\"a}rmeleitung mit Hilfe des Finite-Elemente-Methode Programms Ansys® 6.1 numerisch simuliert. Das Finite-Elemente-Modell wurde durch die Nachrechnung von Feldversuchen verifiziert. Im Rahmen der Finite-Elemente-Berechnungen wurde die infolge der Hydratation des Branntkalkes stattfindende Erw{\"a}rmung des Bindemittel-Boden-Gemisches und des angrenzenden Bodens simuliert und hinsichtlich relevanter Einflussgr{\"o}ßen {\"u}berpr{\"u}ft. Untersucht wurde der Einfluss herstellungsbedingter Faktoren wie Bindemittelkonzentration, S{\"a}ulendurchmesser und S{\"a}ulenanordnung sowie der Einfluss nat{\"u}rlicher Faktoren wie Trockendichte und S{\"a}ttigungsgrad des Bodens. Die mit Hilfe der Finite-Elemente-Methode ermittelten zeitabh{\"a}ngigen, im Boden auftretenden Temperaturgef{\"a}lle bilden die Grundlage f{\"u}r die Untersuchung der thermisch bedingten Wassertransportvorg{\"a}nge in der Stabilisierungss{\"a}ule und deren Umfeld. Zu diesem Zweck wurde die durch die Temperaturfeldbeeinflussung ge{\"a}nderte energetische Situation des Bodenwassers analysiert. Auch nicht-thermische, infolge der S{\"a}ulenherstellung auftretende Effekte wie die durch den >Stopfeffekt< bedingte lokale S{\"a}ttigungs{\"a}nderung und die Beeinflussung des osmotischen Potentials einschließlich der daraus resultierenden Wasserbewegungen wurden ber{\"u}cksichtigt. Alle thermisch verursachten Wasser- und Dampffl{\"u}sse bewirken ein Abstr{\"o}men von Porenwasser aus dem stabilisierten Erdk{\"o}rper in den umliegenden Boden. Baupraktisch bleiben die durch thermische Einfl{\"u}sse hervorgerufenen Wassertransportvorg{\"a}nge aufgrund ihres geringen Betrages jedoch unbedeutend. In abschließenden Temperaturfeldberechnungen wurden die thermischen Bodenkennwerte an die sich zeitlich ver{\"a}ndernde Wassers{\"a}ttigung des Bodens angepasst. Anhand der ermittelten Temperaturverl{\"a}ufe wurde aufgezeigt, dass der Einfluss der S{\"a}ttigungs{\"a}nderung auf die Berechnungsergebnisse sehr gering ist, und damit die Voraussetzung f{\"u}r die vorangegangene entkoppelte Betrachtung des W{\"a}rme- und Massestromes erf{\"u}llt ist. Aufgrund dieser Ergebnisse muss der mehrfach in der Literatur zitierte, auch mit der tiefgr{\"u}ndigen Bodenstabilisierung in Zusammenhang gebrachte, Einfluss der Erw{\"a}rmung auf die Verdunstung des Bodenwassers kritisch betrachtet und in Frage gestellt werden. Voraussetzung hierf{\"u}r ist der Transport von Wasser an die Bodenoberfl{\"a}che. Nennenswerte, auf Temperatureinfl{\"u}ssen beruhende Wasserbewegungen sind, wie die Berechnungsergebnisse gezeigt haben, nicht zu erwarten. Weitere Untersuchungen zur Festigkeitsentwicklung von Branntkalk-Boden-S{\"a}ulen und deren Vorhersage sollten sich daher auf die mechanischen Effekte und auf die mineralogisch-chemischen Prozesse, wie die puzzolanischen Reaktionen, und die M{\"o}glichkeiten ihrer Prognose konzentrieren. Die Berechnungen haben gezeigt, dass die Temperaturentwicklung in der Stabilisierungss{\"a}ule im Wesentlichen durch die Bindemittelkonzentration, und ihr Ausk{\"u}hlungsverhalten vorrangig durch ihre geometrischen Abmessungen bestimmt wird. Diese Sachverhalte sind von den Bodenparametern, der f{\"u}r die Stabilisierung in Frage kommenden B{\"o}den, weitestgehend unabh{\"a}ngig. Temperaturmessungen stellen daher ein geeignetes Mittel zur Qualit{\"a}tssicherung bei der Herstellung von Branntkalk-Boden-S{\"a}ulen dar, mit deren Hilfe sich Inhomogenit{\"a}ten bei der Bindemittelverteilung oder St{\"o}rungen beim Hydratationsvorgang (Abl{\"o}schen des Branntkalkes) nachweisen lassen. Entsprechende Hilfsmittel wurden angegeben.}, subject = {Bodenverbesserung }, language = {de} } @article{SchnellenbachHeldHartmann2004, author = {Schnellenbach-Held, Martina and Hartmann, Markus}, title = {Knowledge Based Systems in Distributed Desgin Environments}, doi = {10.25643/bauhaus-universitaet.210}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2106}, year = {2004}, abstract = {Today's building industry not only demands more and more reduced construction time on building site, but also an advanced and mostly construction attendant design phase. Even though there is software available to support design processes in distributed environments, most applications only support simple document based exchange of information. In this paper a knowledge based system is presented to support cooperative, comprehensive design processes in distributed environments. The presented research project is financially supported by the German Research Community (DFG - Deutsche Forschungsgemeinschaft).}, subject = {Produktmodell}, language = {en} } @inproceedings{Schneider2004, author = {Schneider, Mike}, title = {Radio Frequency Identification (RFID) Technology and its Applications in the Commercial Construction Industry}, doi = {10.25643/bauhaus-universitaet.106}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1061}, year = {2004}, abstract = {This paper is a report of Radio Frequency Identification (RFID) technology and its potential applications in the commercial construction industry. RFID technology offers wireless communication between RFID tags and readers with non line-of-sight readability. These fundamental properties eliminate manual data entry and introduce the potential for automated processes to increase project productivity, construction safety, and project cost efficiency. Construction contractors, owners, and material suppliers that believe technology can further develop methods and processes in construction should feel obligated to participate in RFID studies for the advancement of the construction industry as a whole.}, subject = {RFID}, language = {en} } @inproceedings{SchleyMejstrikHolz2004, author = {Schley, Frank and Mejstrik, Marcus and Holz, K.-Peter}, title = {Network Based Co-operation Platform for Geotechnical Engineering}, doi = {10.25643/bauhaus-universitaet.143}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1431}, year = {2004}, abstract = {This paper describes an approach to support co-operation of experts in heterogeneous geotechnical engineering project environments during both regular execution and handling of exceptional situations. A co-operation platform is introduced which is based on a generalized information model mapping key information about the construction project, the construction process as well as the organization structure. Several tools are provided to operate the information model in a network based environment.}, subject = {Ingenieurbau}, language = {en} } @phdthesis{Schlegel2004, author = {Schlegel, Roger}, title = {Numerische Berechnung von Mauerwerkstrukturen in homogenen und diskreten Modellierungsstrategien}, doi = {10.25643/bauhaus-universitaet.229}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20041213-2369}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Im Zentrum der Arbeit stehen die Entwicklung, Verifikation, Implementierung und Leistungsf{\"a}higkeit numerischer Berechnungsmodelle f{\"u}r Mauerwerk im Rahmen der Kontinuums- und Diskontinuumsmechanik. Makromodelle beschreiben das Mauerwerk als verschmiertes Ersatzkontinuum. Mikromodelle ber{\"u}cksichtigen durch die Modellierung der einzelnen Steine und Fugen die Struktur des Mauerwerkverbandes. Soll dar{\"u}ber hinaus der durch die Querdehnungsinteraktion zwischen Stein und M{\"o}rtel hervorgerufene heterogene Spannungszustand im Mauerwerk abgebildet werden, so ist ein detailliertes Mikromodell, welches Steine und Fugen in ihren exakten geometrischen Dimensionen ber{\"u}cksichtigt, erforderlich. Demgegen{\"u}ber steht die vereinfachte Mikromodellierung, bei der die Fugen mit Hilfe von Kontaktalgorithmen beschrieben werden. Im Rahmen der Makromodellierung werden neue r{\"a}umliche Materialmodelle f{\"u}r verschiedene ein- und mehrschalige Mauerwerkarten hergeleitet. Die vorgestellten Modelle ber{\"u}cksichtigen die Anisotropie der Steifigkeiten, der Festigkeiten sowie des Ver- und Entfestigungsverhaltens. Die numerische Implementation erfolgt mit Hilfe moderner elastoplastischer Algorithmen im Rahmen der impliziten Finite Element Methode in das Programm ANSYS. Innerhalb der detaillierten Mikromodellierung wird ein neues, aus Materialbeschreibungen f{\"u}r Stein, M{\"o}rtel sowie deren Verbund bestehendes nichtlineares Berechnungsmodell entwickelt und in das Programm ANSYS implementiert. Die diskontinuumsmechanische Beschreibung von Mauerwerk im Rahmen der vereinfachten Mikromodellierung erfolgt unter Verwendung der expliziten Distinkt Element Methode mit Hilfe der Programme UDEC und 3DEC. An praktischen Beispielen werden Probleme der Tragf{\"a}higkeitsbewertung gemauerter Bogenbr{\"u}cken, M{\"o}glichkeiten zur Bewertung vorhandener Rissbildungen und Sch{\"a}digungen an historischen Mauerwerkstrukturen und Traglastberechnungen an gemauerten St{\"u}tzen ausgewertet und analysiert.}, subject = {Mauerwerk}, language = {de} } @inproceedings{SchinkKoch2004, author = {Schink, Claus-J{\"u}rgen and Koch, Volker}, title = {Interdisciplinary Cooperation Modules in Mobile Networks}, doi = {10.25643/bauhaus-universitaet.178}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1788}, year = {2004}, abstract = {The contribution describes the didactical integration of wireless access networks for the campus of the University of Karlsruhe in the education of architects and engineers. It focuses on the development of an interdisciplinary communication network to encourage and promote the communication and collaboration between students. The project assumes that significant learning progresses in net-based learning scenarios are based upon the synchronous and asynchronous cooperation between the students themselves. The remote cooperation across borders of disciplines makes high demands on capacity in communicating and cooperating of the involved persons as well as on the supporting tools. Therefore, the collective acquisition of knowledge and cooperation has to be trained intensively during the studies. Based on the design and project oriented cooperation platform netzentwurf.de the authors developed the tools "Jobadmin" to administrate multidisciplinary workgroups, the "Swarm Knowledge Catalogue" to collect and store knowledge and "LivingCampus", an instrument providing basic services for dynamic communication.}, subject = {Architektur}, language = {en} } @misc{Schiecke2004, author = {Schiecke, Steffen}, title = {Eignung alumosilikatischer Polymerbinder zur Modifizierung von Lehmbaustoffen}, doi = {10.25643/bauhaus-universitaet.1419}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20100702-15088}, year = {2004}, abstract = {Der Einsatz von Lehmbaustoffen st{\"o}ßt an Grenzen, wenn das Material Feuchtigkeit ausgesetzt ist. Die vorliegende Arbeit enth{\"a}lt Untersuchungen zur Verbesserung der Wasserbst{\"a}ndigkeit von Lehmbaustoffen. Es konnte gezeigt werden, dass mittels alumosilikatischer Polymerbinder der Widerstand von Lehmbaustoffen gegen Feuchteeinwirkung erheblich verbessert werden kann. Die positiven bauklimatischen Eigenschaften werden dabei nicht negativ beeinflusst.}, subject = {Lehm}, language = {de} } @inproceedings{ScheerGama2004, author = {Scheer, Sergio and Gama, Carmen L{\´u}cia G.}, title = {Learning objects for a teaching and learning network in structural engineering : Developing learning objects for a structural engineering educational network}, doi = {10.25643/bauhaus-universitaet.85}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-856}, year = {2004}, abstract = {Information and Communication Technologies (ITC) in education have been extensively discussed nowadays. In this e-learning scenario, the construction and use of environments that support teaching and learning is a reality. Therefore, for time and general resource savings it is crucial the access to hypermedia contents with great interactivity and with high reusability. Substantial efforts have been centered in the search for a metadata proposal (metadata is a generic term used to describe data that can be used to identify and to describe common characteristics among different documents) that can be standardized and is system independent for the so called learning objects.}, subject = {Bautechnik}, language = {en} } @inproceedings{ScheerDosSantosHinks2004, author = {Scheer, Sergio and Dos Santos, Aguinaldo and Hinks, John}, title = {An approach for promoting knowledge exchange on production practices through the Internet}, doi = {10.25643/bauhaus-universitaet.82}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-821}, year = {2004}, abstract = {Recent research shows that current learning strategies in construction industry have not been effective in implementing lean principles in construction. With that in mind the researchers set to investigate an alternative learning strategy in order to promote learning at the international level. A web-based environment, was developed for this project with the intent of promoting learning and knowledge exchange on the theory and practice of "process transparency" across different countries.}, subject = {Bautechnik}, 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{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} } @inproceedings{RueppelKlauer2004, author = {Rueppel, Uwe and Klauer, Thomas}, title = {Internet-based Workflow-Management for Civil Engineering Projects}, doi = {10.25643/bauhaus-universitaet.164}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1647}, year = {2004}, abstract = {The growing competition pressure in the building industry increases the demands on the design and construction processes in respect to economical, technical and time aspects. These demands require efficient improvements of the value-added chain, which can be realized mainly with the usage of innovative information- and communication-technologies. To support the collaboration of all participants involved in a certain building project the Workflow-Management-System "BauKom-Online" has been developed. In the focus of the system is to support the coordination of the participants and their information exchange. Such a software-method is well suited to ensure a high quality planning process. The modelling of business-processes enables a better self-comprehension of the participants work and helps to enhance the project performance. The system architecture of BauKom-Online contains two basic components: the processmodelling tool and the workflow-engine. The process-model contains of activities and states of the planning and construction processes and their relations. These connected processes compose the workflow. Such a process-model for engineering purposes has to satisfy several needs, e.g., the consideration of planning and building alternatives, dynamic changes of the model during execution of the project and the linkage to further technical objects like costs, building structure, specifications and documentmanagement. Furthermore, the scheduling of the project can be done within the process-model and can be visualized as a Gantt-diagram. ...}, subject = {Baubetrieb}, language = {en} } @inproceedings{RueppelGutzke2004, author = {Rueppel, Uwe and Gutzke, Thomas}, title = {Groundwater-Monitoring based on dynamic co-operative eGovernment-Processes}, doi = {10.25643/bauhaus-universitaet.161}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1611}, year = {2004}, abstract = {As a result of the pilot-project "Grundwasser-Online" the supervision and the active controlling of large monitoring- and catchment-areas are realised by a co-operative integration of all related institutions, a synchronisation-process to combine all distributed data into one central server database, and a high-level eGovernment-Service to provide evaluated information over the internet. Based on this software system the local authorities are able to supervise the groundwater-levels and to find adequate decisions, which finally result in official permissions for the usage of groundwater-reservoirs by the water supply companies.}, subject = {Baubetrieb}, language = {en} } @article{Rose2004, author = {Rose, Martin}, title = {Modeling of Freeway Traffic}, doi = {10.25643/bauhaus-universitaet.263}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2639}, year = {2004}, abstract = {An integrated modeling of freeway traffic is developed, whose implementation in an uniform computer -aided simulation model facilitate comparative evaluation and systematic coupling of several traffic simulations, traffic controls, traffic measurements and traffic scenarios. The integrated modeling of freeway traffic is a basic mapping of freeway networks, control methods, measurements and different simulations of traffic flow...}, subject = {Verkehrsplanung}, language = {en} } @article{RombergNigglvanTreeck2004, author = {Romberg, Richard and Niggl, Andreas and van Treeck, Christoph}, title = {Structural Analysis based on the Product Model Standard IFC}, doi = {10.25643/bauhaus-universitaet.243}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2433}, year = {2004}, abstract = {In this paper we present a computer aided method supporting co-operation between different project partners, such as architects and engineers, on the basis of strictly three-dimensional models. The center of our software architecture is a product model, described by the Industry Foundation Classes (IFC) of the International Alliance for Interoperability (IAI). From this a geometrical model is extracted and automatically transferred to a computational model serving as a basis for various simulation tasks. In this paper the focus is set on the advantage of the fully three-dimensional structural analysis performed by p-version of the finite element analysis. Other simulation methods are discussed in a separate contribution of this Volume (Treeck 2004). The validity of this approach will be shown in a complex example.}, subject = {Produktmodell}, language = {en} } @inproceedings{Rodriguez2004, author = {Rodriguez, Adhamina}, title = {Information Exchange in The Construction Industry : The Particular Case of Green Buildings}, doi = {10.25643/bauhaus-universitaet.175}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1757}, year = {2004}, abstract = {Construction is a conservative industry that over the last twenty ye ars has experienced drastic changes in the way that interdisciplinary teams interact to design and execute a project. In this article we offer a general overview of how the main participants cooperate in the different phases of a construction project, and which are some of the main areas for communication improvement. We also explore the communication tools used in the exchange of information, and identify the main causes of information breakdown. The general framework of this study is of application to both standard and green projects. At the end of the article we discuss the peculiarities of green buildings. Our goal is to offer a series of industry insights derived from the perspective of a general contractor aimed at identifying the areas where contributions in computing and information exchange could have a greater impact on the successful completion of a project.}, subject = {Architektur}, language = {en} } @inproceedings{RobertNicoudRaphaelSmith2004, author = {Robert-Nicoud, Yvan and Raphael, Benny and Smith, Ian F. C.}, title = {Using entropy to maximize the usefulness of data collection}, doi = {10.25643/bauhaus-universitaet.117}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1177}, year = {2004}, abstract = {This paper presents a generic methodology for measurement system configuration when the goal is to identify behaviour models that reasonably explain observations. For such tasks, the best measurement system provides maximum separation between candidate models. In this work, the degree of separation between models is measured using Shannon's Entropy Function. The location and type of measurement devices are chosen such that the entropy of candidate models is greatest. This methodology is tested on a laboratory structure and, to demonstrate generality, an existing fresh water supply network in a city in Switzerland. In both cases, the methodology suggests an appropriate set of sensors for identifying the state of the system.}, subject = {Mobile Computing}, language = {en} } @phdthesis{Rickert2004, author = {Rickert, J{\"o}rg}, title = {Zum Einfluss von Langzeitverz{\"o}gerern auf der Basis von Phosphons{\"a}ure auf die Hydratation einzelner Klinkerphasen, Portlandzementklinker und Portlandzemente}, doi = {10.25643/bauhaus-universitaet.21}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20040211-232}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Neben dem Schwerpunkt der Verfl{\"u}ssigung werden auch Zusatzmittel ben{\"o}tigt, die extrem lange Verarbeitbarkeitszeiten des Betons erm{\"o}glichen. Eine neue Wirkungsgruppe, durch die Verarbeitbarkeitszeiten von {\"u}ber 90 Stunden er-reicht werden k{\"o}nnen, sind Langzeitverz{\"o}gerer (LVZ) auf der Basis von Phosphons{\"a}ure. In systematischen Versuchen wurden grundlegende Erkenntnisse {\"u}ber die Wirkungsmechanismen von LVZ auf die Hydratation gewonnen. Es hat sich gezeigt, dass die verz{\"o}gernde Wirkung von LVZ auf die Bildung von schwer l{\"o}slichem Calciumphosphonat zur{\"u}ckzuf{\"u}hren ist, welches die Partikeloberfl{\"a}chen žabdichtetœ. Vom Angebot an gel{\"o}stem Calcium h{\"a}ngt es ab, ob sich das žabdichtendeœ Calciumphosphonat direkt bildet oder ob durch den Calciumanspruch des LVZ eine kurzzeitig verst{\"a}rkte Hydratation reaktiver Klin-kerphasen hervorgerufen wird. Sulfatoptimierte Zemente wiesen aufgrund der Anteile an Sulfattr{\"a}ger gen{\"u}ge! nd Calcium-Ionen f{\"u}r eine sofortige Bildung von Calciumphosphonat auf. In Verbindung mit der Bildung von prim{\"a}rem Ettringit bildet die Sulfattr{\"a}geroptimierung die Grundlage f{\"u}r die erw{\"u}nschte Wirkungsweise des Zusatzmittels.}, subject = {Beton}, language = {de} } @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} } @phdthesis{Ressel2004, author = {Ressel, Oliver}, title = {Entscheidungshilfen f{\"u}r die Planung von Anlagen zum naßmechanischen Recycling von Betonrestmassen}, doi = {10.25643/bauhaus-universitaet.79}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20040511-831}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Trotz der weiten Verbreitung erfolgt die Planung der Restbetonrecyclinganlagen immer noch durch learnig-by-doing, da verfahrenstechnisches Grundlagenwissen nicht vorliegt. Wer an verantwortlicher Stelle die Investition in eine neue oder in die Verbesserung einer bestehenden Restbetonrecyclinganlage beurteilen soll, steht vor einer komplexen Entscheidung, die unter Ber{\"u}cksichtigung unterschiedlichster Kriterien getroffen werden muss. In der Praxis besteht hinsichtlich der Qualit{\"a}tssicherung der Recyclingprodukte, der Ablagerungen der noch reaktiven Zementpartikel, der Bemessung der eingesetzten Maschinen, der praktikablen Handhabung hinsichtlich einiger Detailprobleme sowie der Anordnung der verfahrenstechnischen Komponenten in Bezug zur Gel{\"a}ndeoberkante weitgehend Unklarheit. Das allgemeine Verlangen nach einer durchdachten Entscheidungshilfe und die Notwendigkeit, zu einem sachlich begr{\"u}ndeten Urteil zu kommen, macht Entscheidungshilfen f{\"u}r die Planung von Restbetonrecyclinganlagen erforderlich. Insbesondere da Fehlentscheidungen nicht nur mit großem Aufwand r{\"u}ckg{\"a}ngig gemacht werden k{\"o}nnen. Hierf{\"u}r wurden 18 maßgebliche Entscheidungskriterien entwickelt. Diese Entscheidungskriterien wurden im Rahmen der Nutzwertanalyse als Projektziele entwickelt. Die erarbeiteten Kriterien einteilen: - Kriterien zur Qualit{\"a}tssicherung bei der Verwendung der Recyclingprodukte F{\"u}r die Wiederverwendung der Recyclingprodukte Restwasser und Restbetonzu- schlag sind im technischen Regelwerk Verfahrensweisen vorgechrieben. Hinsichtlich der Prozesse bei der Wiederverwendung konnten deutliche Ver- besserungspotentiale aufgezeigt werden. Besonders die Anwendung von online- Dichtemessverfahren im Vergleich zur Ar{\"a}ometermessung verbessert die Len- kungsprozesse zur Qualit{\"a}tssicherung. Aber auch die weitere Klassierung oder das getrennte Lagern und Dosieren des Restbetonzuschlags im Vergleich zu der im technischen Regelwerk vorgeschriebenen Verfahrensweise des volumetrischen Absch{\"a}tzens bringt Verbesserungspotential. - Kriterien zur Minimierung von Ablagerungen Noch reaktive Zementpartikel kommen zeitweise permanent mit Anlagen- komponenten, Leitungen und Beckeninnenfl{\"a}chen der Recyclinganlage in Be- r{\"u}hrung. Ablagerungen von Zementpartikeln, die den Betrieb der Anlage be- hindern, verschlechtern oder sogar verhindern, sind unvermeidbar. Aller- dings kann, wie im Rahmen dieser Arbeit gezeigt wurde, eine Minimierung der Ablagerungen durch geeignete Maßnahmen herbeigef{\"u}hrt werden. Die Ablage- rungen im Suspensionsbeckenlassen sich durch den Zustand der homogenen Suspension sowie durch das Str{\"o}mungsbild angepasste Formgebung minimieren. Durch die geeignete Gef{\"a}llewahl und vor allem durch die korrekte Wahl der Pumpenart k{\"o}nnen die Ablagerungen in Leitungen minimiert werden. - Kriterien zur Bemessung der verfahrenstechnischen Apparate Die Auslegung der Recyclinganlage hinsichtlich der Auswaschleistung, der R{\"u}hrerleistung und der Gr{\"o}ße des Suspendierraumes erfolgt bisher anhand von praktischen Erfahrungswerten. In dieser Arbeit wurde f{\"u}r die Auswasch- leistung ein allgemeing{\"u}ltiges Berechnungsmodel hergeleitet. Dar{\"u}ber hinaus wurde gezeigt, dass die R{\"u}hrerleistung f{\"u}r das Suspendieren von Restwasser berechnet werden kann. Die Gr{\"o}ße des Suspendierraumes kann unter Be- r{\"u}cksichtigung der zu- und abfließenden Materialstr{\"o}me berechnet werden. Das Trennverhalten des mechanischen Klassierers wurde im Rahmen einer Ver- suchsreihe mit folgenden Ergebnissen ermittelt: a. Die Klassierdurchs{\"a}tze steigen mit gr{\"o}ßer werdendem Entleerdurchsatz. ufgrund der Pufferwirkung des mechanischen Klassierers, bei der die diskontinuierlich in den Aufgabetrichter gef{\"u}llte Restbetontr{\"u}be (Ent- leeren) in einem kontinuerlichen Prozess (Klassieren) durch den Trog gef{\"o}rdert wird, n{\"a}hert sich der Klassierdurchsatz asymtotisch einem Grenzwert an. b. Das Masseausbringen rbz wird signifikant vom Klassierdurchsatz und weniger vom Entleerdurchsatz beeinflusst. c. Die Korngr{\"o}ßenverteilung des Restbetons, des Restbetonzuschlags und des Restwassers belegen anschaulich den erreichten Trenneffekt. d. Die Trennkorngr{\"o}ße steigt mit zunehmendem Klassierdurchsatz an. Diese Tendenz ist allerdings nur bei Betrachtung des "nassen" Klassier- durchsatzes signifikant erkennbar. Bei Betrachtung des "trockenen" Durchsatzes ergibt sich keine Abh{\"a}ngigkeit. Die Ursache hierf{\"u}r ist, dass in den "nassen" Durchsatz Prozesse wie Tr{\"u}beagitation und Feinkorn- konzentration indirekt eingehen. e. Der Fehlkornanteil < 125 µm im Restbetonzuschlag steigt ebenfalls mit "nassem" Klassiersatz an. f. Im Unterschied dazu bestehen f{\"u}r den Fehlkornanteil > 125 µm im Rest- wasser signifikante Abh{\"a}ngigkeiten zu Entleer- und Klassierdurchs{\"a}tzen. Ursache ist der tote Fluss. - Kriterien zur Praktikabilit{\"a}t des Anlagenberiebes - Interdependenzen zwischen Anlagenkomponenten}, subject = {Restbeton}, language = {de} } @inproceedings{RenShiXu2004, author = {Ren, Aizhu and Shi, Jianyong and Xu, Yun}, title = {Modeling of Buildings and Roads for Urban Applications based on 2D Digital Maps}, doi = {10.25643/bauhaus-universitaet.179}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1791}, year = {2004}, abstract = {Three-dimensional models of urban objects play an important role in the urban applications such as urban planning, environmental concerning, or urban disaster mitigations. While the modeling of urban objects is time consuming and storage costing. This paper presents solutions for this. Buildings with regular shapes and plane roofs are constructed into computer models by identifying of graphic elements from the digital maps of urban area to get building base plane and building heights. Buildings with irregular shapes and non-plane roofs are constructed into computer models by employment of a specific system developed by the authors. Road objects and topologies are constructed into computer models by employment of specific algorithms. The solutions presented in this paper has been used in the development of urban disaster mitigation system for Shantou, China.}, subject = {Architektur}, language = {en} } @inproceedings{ReinhardtGarrettAkinci2004, author = {Reinhardt, Jan and Garrett, James H. and Akinci, Burcu}, title = {SiDaCoS: Product and Process Models on Construction Sites}, doi = {10.25643/bauhaus-universitaet.115}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1156}, year = {2004}, abstract = {Site superintendents performing project management tasks on construction sites need to access project documents and need to collect information that they observe while inspecting the site. Often, information that is observed on a construction site needs to be integrated into electronic documents or project control systems. In the future, we expect integrated product and process models to be the medium for storing and handling construction project management information. Even though mobile computing devices today are already capable of storing and handling such integrated product and process data models, the user interaction with such large and complex models is difficult and not adequately addressed in the existing research. In this paper, we introduce a system that supports project management tasks on construction sites effectively and efficiently by making integrated product and process models accessible. In order to effectively and efficiently enter or access information, site superintendents need visual representations of the project data that are flexible with respect to the level of detail, the decomposition structure, and the type of visual representation. Based on this understanding of the information and data collection needs, we developed the navigational model framework and the application Site Data Collection System (SiDaCoS), which implements that framework. The navigational model framework allows site superintendents to create customized representations of information contained in a product and process model that correspond to their data access and data collection needs on site.}, subject = {Mobile Computing}, language = {en} } @inproceedings{RaueWeitzmann2004, author = {Raue, Erich and Weitzmann, R{\"u}diger}, title = {Analysis and Design of Hybrid Structures using Optimization Strategies}, doi = {10.25643/bauhaus-universitaet.102}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1023}, year = {2004}, abstract = {The paper gives a general overview and concerns with a specified set of computer-aided analysis modules for hybrid structures loaded by extreme excitations. All problems are solved by methods of linear, quadratic or nonlinear mathematical optimization, that leads to very effective and economic design solutions. All approaches are derived from general optimization problem that can be easily altered to conform to specific design tasks. Some advantages and possibilities of hybrid structural modeling (single or mixed model-supported) are discussed. The methods will be illustrated by an example structure and optimization schemes.}, subject = {Konzipieren }, language = {en} } @inproceedings{Portz2004, author = {Portz, Norbert}, title = {Was muss eine {\"o}ffentliche Ausschreibung leisten?}, doi = {10.25643/bauhaus-universitaet.717}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7175}, year = {2004}, abstract = {Voraussetzungen einer ordnungsgem{\"a}ßen Ausschreibung, Beachtung des Vergaberechtssystems, Vergaberecht bei Privatisierungen, Abgrenzung zwischen VOL- und VOF-Verfahren, ordnungsgem{\"a}ße Schwellenwertermittlung, Finanzierung und Planung, richtige Vergabeart, richtige Leistungs- und Aufgabenbeschreibung, ordnungsgem{\"a}ße Wertung, Aufhebung der Ausschreibung, ordnungsgem{\"a}ßer Vergabevermerk}, subject = {Baubetriebslehre}, language = {de} } @inproceedings{Planker2004, author = {Planker, Markus}, title = {Die Aufsichtspflicht (und Kl{\"a}rungspflicht) des Architekten, Architekten- und Ingenieurhaftung, Berufshaftpflichtversicherungen}, doi = {10.25643/bauhaus-universitaet.722}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7227}, year = {2004}, abstract = {Der Architektenvertrag als Werkvertrag (Konsequenzen: Haftung f{\"u}r den Werkerfolg, keine abschließende Bestimmung des vom Architekten geschuldeten Leistungsumfanges durch den T{\"a}tigkeitskatalog etwa von \S 15 HOAI), vertragliche und außervertragliche Haftungstatbest{\"a}nde (vertragliche Anspr{\"u}che des Auftraggebers gegen den Architekten, Haftung gegen{\"u}ber Dritten aufgrund des Architektenvertrages), typische Haftungsrisiken des Architekten, insbesondere im Kostenbereich sowie f{\"u}r Planungs- und Objekt{\"u}berwachungsfehler (Haftung des Architekten f{\"u}r {\"U}berschreitung der Baukosten, Architektenhaftung bei Planungs- und Objekt{\"u}berwachungsfehlern), Zul{\"a}ssigkeit der Vereinbarung von Haftungsbeschr{\"a}nkungen, Berufshaftpflichtversicherung f{\"u}r Architekten und Ingenieure}, subject = {Baubetriebslehre}, language = {de} } @article{PickHeimsundMilbradt2004, author = {Pick, Tobias and Heimsund, Bjoern-Ove and Milbradt, Peter}, title = {Development and Analysis of Sparse Matrix Concepts for Finite Element Approximation on general Cells}, doi = {10.25643/bauhaus-universitaet.250}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2500}, year = {2004}, abstract = {In engineering and computing, the finite element approximation is one of the most well-known computational solution techniques. It is a great tool to find solutions for mechanic, fluid mechanic and ecological problems. Whoever works with the finite element method will need to solve a large system of linear equations. There are different ways to find a solution. One way is to use a matrix decomposition technique such as LU or QR. The other possibility is to use an iterative solution algorithm like Conjugate Gradients, Gauß-Seidel, Multigrid Methods, etc. This paper will focus on iterative solvers and the needed storage techniques...}, subject = {Finite-Elemente-Methode}, language = {en} } @inproceedings{PetzoldDonath2004, author = {Petzold, Frank and Donath, Dirk}, title = {The building as a container of information : the starting point for project development and design formulation}, doi = {10.25643/bauhaus-universitaet.184}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1848}, year = {2004}, abstract = {For planning in existing built contexts, the building survey is the starting point for initial planning proposals, for the diagnosis and documentation of building damages, for the creation of objectives catalogues, for the detailed design of renovation and conversion measures and for ensuring fulfilment of building legislation, particularly by change of use and refitting. An examination of currently available IT-tools shows insufficient support for planning within existing contexts, most notably a deficit with regard to information capture and administration. This paper discusses the concept for a modular surveying system (basic concept, separation of geometry from semantic data, and separation into sub-systems) and the prototypical realisation of a system for the complete support of the entire building surveying process for existing buildings. The project aims to contribute to the development of a planning system for existing buildings. ...}, subject = {Architektur}, language = {en} } @inproceedings{PetzoldBartelsDonath2004, author = {Petzold, Frank and Bartels, Heiko and Donath, Dirk}, title = {New techniques in Building Surveying}, doi = {10.25643/bauhaus-universitaet.180}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1803}, year = {2004}, abstract = {Building activities in the construction industry in Germany increasingly concentrate on building measures in or involving the existing built environment. Before planning can begin, buildings must be surveyed in whole or in part with the surveying of geometric data playing a dominant role. The geometric survey is typically undertaken using geodetic or photogrammetric measuring techniques and equipment that have been adapted for use in building surveying. Accordingly appropriate technical knowledge is required in order to be able to operate them as well as a considerable financial investment. Such equipment and surveying methods are usually adaptations from other disciplines. The paper discusses and presents approaches to developing "new" equipment for building surveying, devised with the needs of building surveying in mind - redesigns or new designs for surveying tools. The designs are the result of an inter-disciplinary project between the Faculty of Architecture and the Faculty of Product Design at the Bauhaus Universit{\"a}t Weimar.}, subject = {Architektur}, language = {en} } @inproceedings{PetersenSeewald2004, author = {Petersen, Michael and Seewald, Gerrit}, title = {Establishing of fundamentals in building projects using web services}, doi = {10.25643/bauhaus-universitaet.127}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1273}, year = {2004}, abstract = {During the establishing of fundamentals in a building project a huge amount of influence factors and boundary conditions have to be investigated in order to provide the prerequisites for further planning processes. These investigative tasks are often related with a great effort concerning time and money, because there are no standardized workflows and interfaces which provide an efficient access to the necessary information related to a specific construction site. Within the fundamental investigation human and natural circumstances have to be taken into account. Thus, in this project two examples have been chosen in order to demonstrate the holistic approach for an integration and provision of georeferenced information. The developed internet-site http://www.grundlagenermittlung.de has been designed to support architects and civil engineers in early planning phases of a building project efficiently. It offers web-based services based on dynamic interfaces for a flexible search and collection of information concerning the building site. Therefore, a central Metadatabase-Server for Description, Discovery and Integration has been established which enables a registration of georeferenced services and the redirection of incoming requests to other, distributed data pools. Using this Yellow-Page concept in combination with the underlying meta-data based on the ISO 19115 standard an efficient investigation of geographical and environmental information becomes possible.}, subject = {Bauwerk}, language = {en} } @inproceedings{PetersenDiaz2004, author = {Petersen, Michael and Diaz, Joaquin}, title = {Integrated planning of buildings based on computer models in project communication systems}, doi = {10.25643/bauhaus-universitaet.176}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1762}, year = {2004}, abstract = {The increasing demands in building and civil engineering - with regard to the growing amount of legal requirements and the needs of a flexible usage of the building - requires an optimisation of all processes during the planning and construction phases. This aim can be only reached by transferring of innovative information and communication technologies in the field of cooperation of all partners in a building project. In this article the enhancement of the existing planning processes based on an improved information management is introduced. Since the late 90ies the availability of hardware and software infrastructures for a networkbased cooperation, e.g. email, in small and middle-sized companies increased the problems of an unstructured communication in the planning and construction processes. These problems have not been solved by the usage of the upcoming project communication systems either, which are often used as a simple medium for data transfer. Because of the easy way of distributing documents to all planning partners a huge amount of files and subsequent versions can be stored so that the planners often have to scope with an information overflow. The underlying hierarchical structures based on simple files stored in tree views are not sufficient for an adequate representation of the different specific views of the planners and the management of relationships between the three information domains building structure, costs and time schedules. ..}, subject = {Architektur}, language = {en} } @inproceedings{PerevalovaPahl2004, author = {Perevalova, Julia and Pahl, Peter Jan}, title = {Structural and Functional Dependence of Objects in Data Bases}, doi = {10.25643/bauhaus-universitaet.168}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1683}, year = {2004}, abstract = {Let the information of a civil engineering application be decomposed into objects of a given set of classes. Then the set of objects forms the data base of the application. The objects contain attributes and methods. Properties of the objects are stored in the attributes. Algorithms which the objects perform are implemented in the methods of the objects. If objects are modified by a user, the consistency of data in the base is destroyed. The data base must be modified in an update to restore its consistency. The sequence of the update operations is not arbitrary, but is governed by dependence between the objects. The situation can be described mathematically with graph theory. The available algorithms for the determination of the update sequence are not suitable when the data base is large. A new update algorithm for large data bases has been developed and is presented in this paper.}, subject = {Baubetrieb}, language = {en} } @inproceedings{PengLawLau2004, author = {Peng, Jun and Law, Kincho and Lau, Gloria}, title = {Internet-Enabled Software Model for Nonlinear Structural Analysis and Simulations}, doi = {10.25643/bauhaus-universitaet.105}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1057}, year = {2004}, abstract = {This paper describes an Internet-enabled software model that could facilitate the development and utilization of nonlinear structural analysis programs. The software model allows users easy access to the analysis core program and the analysis results by using a web-browser or other application programs. In addition, new and legacy codes can be incorporated as distributed services and be integrated with the software framework from disparate sites. A distributed project management system, taking advantages of Internet and database technologies, is implemented to store and manage model information and simulation results. Nonlinear dynamic analysis and simulations of a bridge structure is performed to illustrate the facilities of the Internet-enabled software model.}, subject = {Konzipieren }, language = {en} } @inproceedings{Pavlov2004, author = {Pavlov, Alexander}, title = {Data Transfer and Objects Recognition in Building Design}, doi = {10.25643/bauhaus-universitaet.126}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1265}, year = {2004}, abstract = {The problem of data interoperability is now very important. The formal description of construction systems and objects must base upon the modeling for the description of construction data domain. The XML-language was selected as a basis of a universal data format, ensuring natural hierarchy of objects, flexibility, good layout and expandability. The language, developed by the author, is called Building Object Description Extensible Markup Language (bodXML). The types of all objects used by data transfer should be definite beforehand with existing methods of programming. It limits the possibilities of IT in application of new types. But the recipient software must recognize the building objects even if the kind of object is unknown at the outset. The author offers a set of main topological and geometric properties being sufficient for recognition of main three-dimensional building constructions with flat edges. The tests of artificial neuron network have shown that the recognition of a kind of the constructions represented as a set of indicated parameters happens enough confidently.}, subject = {Bauwerk}, language = {en} } @phdthesis{Pastohr2004, author = {Pastohr, Henry}, title = {Thermodynamische Modellierung eines Aufwindkraftwerkes}, doi = {10.25643/bauhaus-universitaet.81}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20040803-867}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Die Energieversorgung auf der Erde wird zuk{\"u}nftig zu einem Problem. Bedingt ist dies durch eine fortschreitende Verknappung der nat{\"u}rlichen Ressourcen, wie Kohle, Gas und {\"O}l sowie einer Zunahme der CO2-Konzentration und anderer Schadstoffe in der Atmosph{\"a}re. Regenerative Energiequellen m{\"u}ssen genutzt werden, um den steigenden Energiebedarf zu sichern. Eine interessante M{\"o}glichkeit zur Nutzung der Solarenergie stellt das Aufwindkraftwerk dar. Das Aufwindkraftwerk besteht aus einem Kamin, um den ein Glasdachkollektor auf dem Erdboden angeordnet ist. Am Fuße des Kamins befinden sich Turbinen und Generatoren. Die einfallende Solarenergie wird haupts{\"a}chlich {\"u}ber die Wechselwirkung mit dem Erdreich in thermische Energie, in kinetische Energie, in Rotationsenergie und in elektrische Energie umgewandelt. Das Ziel der Arbeit bestand in der physikalisch-mathematischen Modellierung, der genaueren Erkennung des Wirkprinzips und der Diskussion der Anlagenparameter Leistung und Wirkungsgrad. Im Rahmen dieser Aufgabe wurden dazu station{\"a}re und instation{\"a}re Computational Fluid Dynamic (CFD) Modelle und station{\"a}re und instation{\"a}re vereinfachte Modelle entwickelt, diskutiert und miteinander verglichen. Grundlegend neue Erkenntnisse wurden bei den Verl{\"a}ufen der Temperaturen im Kollektor, insbesondere der Erdoberfl{\"a}chentemperatur erreicht. Parameteranpassungen im W{\"a}rme{\"u}bergangsmodell und Widerstandsmodell f{\"u}hrten f{\"u}r vier ausgew{\"a}hlte, station{\"a}re Sonnenenergien auf eine gute {\"U}bereinstimmung zwischen den Ergebnissen (Temperaturhub, Druckentnahme, Leistung und Wirkungsgrad) des station{\"a}ren, hybriden Modells und des station{\"a}ren CFD-Modells. Weiterhin stimmen die lokalen Gr{\"o}ßen W{\"a}rme{\"u}bergangskoeffizient, Erdoberfl{\"a}chentemperatur, Lufttemperatur und Glasdachtemperatur gut zwischen den Modellen {\"u}berein. Mit dem CFD Modell wurden der Prototyp und 3 Großkraftwerke berechnet. Mit dem entwickelten instation{\"a}ren FDM-Modell wurden erstmalig numerische Langzeitsimulationen (1 Jahr) durchgef{\"u}hrt. Zur {\"U}berpr{\"u}fung des Modells wurden die Ergebnisse mit Messwerten aus Manzanares verglichen, wobei eine gute {\"U}bereinstimmung erreicht werden konnte. Das Verst{\"a}ndnis f{\"u}r die stattfindenden thermodynamischen und str{\"o}mungsmechanischen Prozesse in einem Aufwindkraftwerk konnte durch die Arbeit maßgeblich verbessert werden.}, subject = {Aufwindkraftwerk}, language = {de} } @inproceedings{ParmeeAbraham2004, author = {Parmee, Ian and Abraham, Johnson}, title = {User-centric Evolutionary Design Systems - the Visualisation of Emerging Multi-Objective Design Information}, doi = {10.25643/bauhaus-universitaet.109}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1094}, year = {2004}, abstract = {The paper describes further developments of the interactive evolutionary design concept relating to the emergence of mutually inclusive regions of high performance design solutions. These solutions are generated from cluster-oriented genetic algorithm (COGAs) output and relate to a number of objectives introduced during the preliminary design of military airframes. The data-mining of multi-objective COGA (moCOGA) output further defines these regions through the application of clustering algorithms, data reduction and variable attribute relevance analyses. A number of visual representations of the COGA output projected onto both variable and objective space are presented. The multi-objective output of the COGA is compared to output from a Strength Pareto Evolutionary Algorithm (SPEA-II) to illustrate the manner in which moCOGAs can generate good approximations to Pareto frontiers.}, subject = {Konzipieren }, language = {en} } @inproceedings{Palm2004, author = {Palm, Johan}, title = {Integrated Engineering Workflow focused on the Structural Engineering in the Industrial Environment}, doi = {10.25643/bauhaus-universitaet.162}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1625}, year = {2004}, abstract = {The engineering and construction industry has been slow to exploit the full potential of information technology. The industry is highly fragmented, price sensitive, risk-adverse, and profit margins are small. Each project is unique with a small amount of technological innovation opportunities to capitalise on from one project to the next. Technological innovations that have been taking place are just simulating the old traditional paper workflow. Engineering information in digital form is being conveyed using traditional paper representations, which have to be interpreted by humans before the information can be used in other applications, thereby creating 'islands of information'. It can be seen that poorly implemented IT strategies are duplicating paperwork, rather than reducing or eliminating it (Crowley et al., 2000). This paper will introduce the Integrated Engineering Workflow (IEW) concept to re-organise a structural discipline working on multi-disciplinary projects so as to maximise the advantages offered by new information technology.}, subject = {Baubetrieb}, language = {en} } @article{PalaneeswaranKumaraswamyNg2004, author = {Palaneeswaran, Ekambaram and Kumaraswamy, Mohan and Ng, Thomas}, title = {Knowledge Management for Small and Medium Contractors}, doi = {10.25643/bauhaus-universitaet.258}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2582}, year = {2004}, abstract = {Effective knowledge management is increasingly considered as a cornerstone of sustainable business success. Knowledge management systems are strategically valuable for both ensuring consistency and continuous improvement of various aspects such as quality delivery, productivity and competitiveness. The small and medium enterprises (SMEs) in the construction industry are mostly operating under tighter timeframes, narrower profit margins and more constrained resources. Hence the recently commenced SMILE-SMC (Strategic Management with Information Leveraged Excellece for Small and Medium Contractors) project aims to support the information and knowledge management needs of the small and medium contractors in Hong Kong. This paper presents some snapshots on the SMILE-SMC project, and its conceptualized deliverables with some highlights of recent developments.}, subject = {Wissensmanagement}, language = {en} } @article{OsadaKoikeMorimoto2004, author = {Osada, Teppei and Koike, Hirotaka and Morimoto, Akinori}, title = {Research on Establishment of a Standard of Traffic Impact Assessment with Integrated Database System}, doi = {10.25643/bauhaus-universitaet.264}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2647}, year = {2004}, abstract = {Planning support systems, such as geographical information system (GIS) and traffic flow simulation models, are widely in use in recent urban planning research. In this paper we propose a method to apply traffic impact assessment (TIA) to large-scale, commercial developments. In TIA research we often encounter the problem of increasing amount of data that is necessary for detailed investigation and analysis, as the scale of commercial developments become larger and more complex. As a result, TIA presents two problems. The first problem is the difficulty of data acquisition. The second problem is the reliability of data. As a solution, we developed an integrated database system.}, subject = {Verkehrsplanung}, language = {en} } @inproceedings{Olivier2004, author = {Olivier, A. H.}, title = {An application-centred framework for distributed engineering applications}, doi = {10.25643/bauhaus-universitaet.135}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1353}, year = {2004}, abstract = {The conceptual structure of an application that can support the structural analysis task in a distributed collaboratory is described in (van Rooyen and Olivier 2004). The application described there has a standalone component for executing the finite element method on a local workstation in the absence of network access. This application is comparable to current, local workstation based finite element packages. However, it differs fundamentally from standard packages since the application itself, and its objects, are adapted to support distributed execution of the analysis task. Basic aspects of an object-oriented framework for the development of applications which can be used in similar distributed collaboratories are described in this paper. An important feature of this framework is its application-centred design. This means that an application can contain any number of engineering models, where the models are formed by the collection of objects according to semantic views within the application. This is achieved through very flexible classes Application and Model, which are described in detail. The advantages of the application-centred design approach is demonstrated with reference to the design of steel structures, where the finite element analysis model, member design model and connection design model interact to provide the required functionality.}, subject = {Ingenieurbau}, language = {en} } @inproceedings{O'BrienElMashaleh2004, author = {O'Brien, William and El-Mashaleh, Mohammad}, title = {An Empirical Study Relating Construction Firm Performance and IT Utilization}, doi = {10.25643/bauhaus-universitaet.173}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1739}, year = {2004}, abstract = {This paper examines the impact of information technology (IT) utilization on construction firm performance. Based on empirical data collected from 74 US construction firms, the analyses provide evidence that IT has a positive impact on overall firm performance, schedule performance, and cost performance. Firm performance is a composite score of several metrics of performance: schedule performance, cost performance, customer satisfaction, safety performance, and profit. No relationship is found between IT utilization and customer satisfaction, safety, or profit, although this may be due to limitations of the study given strong correlations between IT utilization and cost and schedule performnance. The empirical evidence of positive association between performance and IT use provided by this research is significant to both construction practice and research literature. This evidence should encourage firms to adopt and invest in IT tools.}, subject = {Architektur}, 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{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} } @phdthesis{Nguyen2004, author = {Nguyen, Thu Huong}, title = {Architektonische Grundlage f{\"u}r die Entwicklung von barrierefreien berufsbildenden Schulen f{\"u}r die Integration von Seh- und Mobilit{\"a}tsbehinderten sowie nichtbehinderten Menschen in Vietnam}, doi = {10.25643/bauhaus-universitaet.652}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20050707-6857}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2004}, abstract = {Im Gegensatz zu Industriel{\"a}ndern wird das barrierefreie und behindertengerechte Planen und Bauen von {\"o}ffentlichen Geb{\"a}uden in Entwicklungsl{\"a}ndern aus wirtschaftlichen und sozialen Gr{\"u}nden nur ungen{\"u}gend ber{\"u}cksichtigt und realisiert. Die Analyse von international vorhandenen Normen und Richtlinien zeigte, dass in Vietnam die Integration behindertengerechter Konzepte in Bauplanungen erst seit dem Jahr 2002 stattfindet, wohingegen diese in China bereits seit den 80er Jahren und in den Industrienationen wie Deutschland und Amerika sogar schon seit drei Jahrzehnten Anwendung findet. Die ungen{\"u}gende Ber{\"u}cksichtigung behindertengerechter Baukonzepte in {\"o}ffentlichen Einrichtungen, so auch vor allem in Berufsschulen bewirkt eine drastische Reduzierung des Ausbildungsplatzangebotes und eine resultierende Perspektivlosigkeit f{\"u}r behinderte Menschen. Durch die schnelle Errichtung barrierefreier, behindertengerechter Ausbildungseinrichtungen sollen sich die Chancen auf einen Ausbildungsplatz f{\"u}r behinderte Vietnamesen deutlich verbessern. Mit dem Erhalt eines Ausbildungsplatzes wird diesen Menschen nicht nur eine Integration in die Gesellschaft sondern langfristig gesehen auch finanzielle Selbst{\"a}ndigkeit und somit Unabh{\"a}ngigkeit von der Familie erm{\"o}glicht. Als Grundlage des angestrebten Umwandlungsprozesses von der herk{\"o}mmlichen barrierebelasteten Bauplanung zur Ber{\"u}cksichtigung von behinderten Menschen durch behindertengerechte Planungskonzepte wurden Bauzeit, Bauumfang und Baukosten eingehend analysiert. Dieser vergleichenden Betrachtung der Bauplanungen entwuchsen zwei neue barrierefreie Berufschultypen. Der neue Berufsschultyp 1 - Der Dezentralisierungstyp zeichnet sich durch einen geringf{\"u}gigen Bauumfang und durch seine einfache Baukonstruktion aus und erm{\"o}glicht somit eine schnelle Reaktion auf den gravierenden Ausbildungsplatzmangel f{\"u}r behinderte Menschen. Dieser kosteng{\"u}nstige Berufsschultyp wurde entwickelt, um sehr kurzfristig eine schnelle Erh{\"o}hung des Ausbildungsplatzangebotes f{\"u}r behinderte Menschen zu schaffen. Siedlungs- und Wohngebiete bzw. D{\"o}rfer eignen sich am besten als Standort f{\"u}r den Berufsschultyp 1. Das urspr{\"u}ngliche Wohnumfeld bliebe den behinderten Sch{\"u}lern erhalten und damit einhergehend auch die seelische Unterst{\"u}tzung durch deren Familien. Der familiennahe Standort der Berufsschule w{\"u}rde somit sowohl den Lehrern als auch den Sch{\"u}lern eine große seelische Last abnehmen. Des Weiteren ließe sich eine Berufsschule vom Typ 1 schnellstens errichten, so dass die Ausbildung der behinderten und nicht behinderten Sch{\"u}ler sofort aufgenommen werden k{\"o}nnte. Im Zuge der Entwicklung des neuen Berufsschultyps 2 - Dem Zentralisierungstyp - wurden internationale Standards angestrebt. Dieser Berufsschultyp bietet eine umfangreichere Flexibilit{\"a}t in seiner Nutzungsart, ein umfassenderes Angebot an Ausbildungsg{\"a}ngen und ein weitaus gr{\"o}ßeres Feld der Integration. Der Berufsschultyp 2 ist ein komplexer Bau, mit einem gr{\"o}ßeren Bauumfang als Berufsschultyp 1. Bei der Errichtung dieser Berufsschultypen ist mit einer langfristigen Planungs- und Bauzeit zu rechnen. Der Stadtrand wird als der optimale Standort zur Errichtung der Berufsschule vom Typ 2 angesehen. Von dort aus ließen sich die {\"o}ffentlichen Service der Stadt effizient nutzen. Als Bewertungsgrundlage f{\"u}r eine optimale Entwicklung der beiden neuen Berufsschultypen dienen Basisdaten aus umfassenden Analysen {\"u}ber verschiedenste Betrachtungsebenen. Unter Nutzung der in Deutschland und USA bestehenden gesetzlichen Grundlagen sollen barrierefreie Planungsempfehlungen, gezielt f{\"u}r die Errichtung behindertengerechter berufsausbildender Schulen in Vietnam, abgleitet werden, um ein gemeinsames Lernen von seh- und mobilit{\"a}tsbehinderten sowie von nicht behinderten Menschen zu erm{\"o}glichen. Bei den Planungsempfehlungen finden nicht nur die unterschiedlichen menschlichen K{\"o}rpergr{\"o}ßen der verschiedenen Bev{\"o}lkerungsgruppen sondern auch die unterschiedliche Lebensweise der Vietnamesen sowie die Klimabedingungen in Vietnam Ber{\"u}cksichtigung. Bei der Planung von behindertengerechten Ausbildungs- und Schuleinrichtungen ist es wichtig, die K{\"o}rpergr{\"o}ße der Menschen des jeweiligen Landes zu ber{\"u}cksichtigen. Als Orientierungsmaß f{\"u}r die K{\"o}rpergr{\"o}ße vietnamesischer Menschen wurde ein Richtfaktor definiert und eingesetzt. Anhand der o.g. Richtfaktorgr{\"o}ßen wurden detaillierte Planungsempfehlungen f{\"u}r barrierefreies Lernen und Wohnen herausgearbeitet.}, subject = {Berufsschule}, language = {de} } @article{NeubergFankEkkerlein2004, author = {Neuberg, Frank and Fank, Ernst and Ekkerlein, Christian}, title = {Integrated Life Cycle Simulation and Assessment of Buildings}, doi = {10.25643/bauhaus-universitaet.235}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2351}, year = {2004}, abstract = {Buildings require both for construction and, due to their comparatively long life cycle for maintenance, significant raw material and energy resources. So far available knowledge about resource consumption during an entire life cycle of a building is still quite rare, because various criteria affect each other and/or overlay mutually. In this contribution a model based software concept is presented using an integrated approach for life cycle simulation and assessment of buildings. The essential point of the development consists of connecting an IFC compliant product model of a building via the Internet with data bases for the resource and energy requirement of building materials. Furthermore, numerical simulations allow calculating and minimizing the energy consumption, the resource requirement, the waste streams and also the noxious emissions. In the context of this paper we present the first release of software programs for architects and engineers, which help them to evaluate their design decisions objectively in early planning steps. Additionally the usage of the software is demonstrated by a test case study for a real world building. By applying this software in practice a substantial contribution for saving energy and natural resources can be provided in the sense of sustainable and ecological building design.}, subject = {Produktmodell}, language = {en} } @article{Neef2004, author = {Neef, Sonja}, title = {Was ist Europ{\"a}ische Medienkultur?}, doi = {10.25643/bauhaus-universitaet.226}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2262}, year = {2004}, abstract = {Der Sage nach wurde Europa, jene fremde K{\"o}nigstochter, vom G{\"o}ttervater Zeus in der Verkleidung eines majest{\"a}tischen Stiers vom fernen Phoenizien nach Kreta - w{\"o}rtlich - „{\"u}bertragen", das heißt von hier nach dort getragen. So gesehen erzeugt Europa einen dritten Raum, einen Trenn- und/oder Bindestrich zwischen Orient und Okzident, als diasporadische Figur und auch als Kontinent. Die Logik eines solchen Strichs, der zugleich trennt und verbindet, findet eine kartographische Entsprechung im nullten L{\"a}ngengrad, der die ganze Welt in ein Einheit schaffendes Koordinatensystem „{\"u}bersetzt", mit Greenwich als Zentrum. Ein {\"A}quivalent eines solchen fixen Ausgangspunktes findet sich in der perspektivischen Europa-Darstellung in Tiepolos Darstellung der Kontinente im Deckenfries des Treppenhauses der F{\"u}rstbisch{\"o}flichen Residenz in W{\"u}rzburg. In diesem architektonischen Gem{\"a}lde bildet Europa das Frontispiz, das nur von einem privilegierten Standort auf dem ersten Treppenabsatz unverzerrt betrachtet werden kann. Gegenstand dieses Beitrags sind eben diese drei medienkulturellen Europa-Inszenierungen: 1.) eine Sage, 2.) das kartographische Element des Nullmeridians und 3.) Tiepolos Treppenhausgem{\"a}lde, sie alle verstehe ich als medienkulturelle {\"U}bersetzungen Europas. Ziel dieses Beitrags ist es zu fragen, wie diese drei kulturellen Objekte in ihren jeweiligen medialen Modi am Europa-Begriff arbeiten. Dreh- und Angelpunkt ist dabei der Akt des {\"U}bersetzens, und zwar sowohl im Sinne einer Umschrift von einem medialen Modus in den anderen als auch als durchaus physisch zu verstehende Bewegung einer Migration zwischen Heimat und Fremde. Ergebnis dieser Betrachtungen ist ein Europa-Begriff, der nicht unproblematisch mit sich selbst identisch ist, sondern sich erst in der Bewegung des {\"U}bersetzens konstituiert, also im dritten Raum oder als Bindestrich zwischen den Kulturen.}, subject = {Kulturwissenschaften}, language = {de} } @inproceedings{MundaniBungartz2004, author = {Mundani, Ralf-Peter and Bungartz, Hans-Joachim}, title = {Octrees for Cooperative Work in a Network-Based Environment}, doi = {10.25643/bauhaus-universitaet.146}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1460}, year = {2004}, abstract = {Assuring global consistency in a cooperative working environment is the main focus of many nowaday research projects in the field of civil engineering and others. In this paper, a new approach based on octrees will be discussed. It will be shown that by the usage of octrees not only the management and control of processes in a network-based working environment can be optimised but also an efficient integration platform for processes from various disciplines - such as architecture and civil engineering - can be provided. By means of an octree-based collision detection resp. consistency assurance a client-server-architecture will be described as well as sophisticated information services for a further support of cooperative work.}, subject = {Ingenieurbau}, language = {en} } @article{MotawaAnumbaElHamalawi2004, author = {Motawa, Ibrahim and Anumba, Chimay and El-Hamalawi, A.}, title = {Development of a Fuzzy System for Change Prediction in Construction Projects}, doi = {10.25643/bauhaus-universitaet.218}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2180}, year = {2004}, abstract = {Change management has been the focus of different IT systems. These IT systems were developed to represent design information, record design rationale, facilitate design coordination and changes. They are largely based on managing reactive changes, particularly design changes, in which changes are recorded and then propagated to the relevant project members. However, proactive changes are hardly dealt with in IT systems. Proactive changes require estimating the likelihood of occurrence of a change event as well as estimating the degree of change impacts on project parameters. Changes in construction projects often result from the uncertainty associated with the imprecise and vague knowledge of much project information at the early stages of projects. This is a major outcome of the case studies carried out as part of this research. Therefore, the proposed model considers that incomplete knowledge and certain project characteristics are always behind change causes. For proactive changes, predicting a change event is the main task for modelling. The prediction model should strive to integrate these main elements: 1) project characteristics that lead to change 2) causes of change, 3) the likelihood of change occurrence, and 4) the change consequences. It should also define the dependency relationships between these elements. However, limited data (documented) are only available from previous projects for change cases and many of the above elements can only be expressed in linguistic terms. This means that the model will simulate the uncertainty and subjectivity associated with these sets of elements. Therefore, a fuzzy model is proposed in this research to capture these elements. The model analyses the impact of each set of elements on the other by assigning fuzzy values for these elements that express the uncertainty and subjectivity of their impact. The main aim is to predict change events and evaluate change effects on project parameters. The fuzzy model described above was developed in an IT system for operational purposes and was designed as a Java package of components with their supporting classes, beans, and files. This paper describes the development and the architecture of the proposed IT system to achieve these requirements. The system is intended to help project teams in dealing with change causes and then the change consequences in construction projects.}, subject = {Mehragentensystem}, language = {en} } @article{MostEckardt2004, author = {Most, Thomas and Eckardt, Stefan}, title = {Application of a hybrid parallelization technique to accelerate the numerical simulation of nonlinear mechanical problems}, doi = {10.25643/bauhaus-universitaet.259}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2599}, year = {2004}, abstract = {This paper presents the combination of two different parallelization environments, OpenMP and MPI, in one numerical simulation tool. The computation of the system matrices and vectors is parallelized with OpenMP and the solution of the system of equations is done with the MPIbased solver MUMPS. The efficiency of both algorithms is shown on several linear and nonlinear examples using the Finite Element Method and a meshless discretization technique.}, subject = {Framework }, language = {en} } @article{MostBucherSchorling, author = {Most, Thomas and Bucher, Christian and Schorling, York}, title = {Dynamic stability analysis of non-linear structures with geometrical imperfections under random loading}, series = {Journal of Sound and Vibration}, journal = {Journal of Sound and Vibration}, pages = {381 -- 400}, abstract = {Dynamic stability analysis of non-linear structures with geometrical imperfections under random loading}, subject = {Angewandte Mathematik}, language = {en} } @article{MonobeTanakaFuruta2004, author = {Monobe, Kantaro and Tanaka, Shigenori and Furuta, Hitoshi}, title = {Development of a System for Making Guide Maps based on the Idea of the Cognitive Map}, doi = {10.25643/bauhaus-universitaet.268}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2688}, year = {2004}, abstract = {Digital maps are very easily applied as route guide maps. Route guide maps are provided through Web or a mobile phone services, and demand for such services is increasing. However, the production of a route guide map requires a great deal of time. Therefore, it is difficult for general users to make route guide maps. The purpose of the present research is the development of a system that can generate a route guide map using the Digital Map 2500 (Spatial Data Framework) published by the Geographical Survey Institute. This system will not require advanced equipment or expert knowledge. Therefore, anyone can produce route guide maps easily and quickly. By using the Digital Map 2500, the time and cost required in order to generate a map are reduced. Moreover, a useful route guide map can be created by simplifying the map form based on the human cognitive map.}, subject = {Geoinformationssystem}, language = {en} } @inproceedings{Molkenthin2004, author = {Molkenthin, Frank}, title = {Web-based Collaborative Engineering based on Information Sharing - HydroWeb: An Education Experiment in the Internet}, doi = {10.25643/bauhaus-universitaet.186}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1869}, year = {2004}, abstract = {This paper describes the concept and experiences of the international Open Distance Learning Course 'HydroWeb'. This course deals with the introduction of Web-based Collaborative Engineering in standard education programmes of water related engineering and civil engineering based on information sharing. Organized under the umbrella of IAHR and ETNET21 this course is collaboration from several universities from all over the world. Started in 1999 the course demonstrates the potential and innovative opportunities of Web-Technology in education, research and engineering: Students from the different partner universities form small distributed teams to solve a given engineering problem in a time window of two weeks. To overcome the spatial distribution the students apply modern Web technology such as video conferencing, application sharing and document management. All results as well as the final reports are presented as Web document on a shared Web-based project platform (http://www.hydro-web.org). Besides the experiences to apply standard Web tools and working methods based on information sharing instead the conventional information exchange in the daily engineering work the students improve their soft skills operate successfully in international and interdisciplinary project environments as part of the 'Technical Culture' of nowadays.}, subject = {Architektur}, language = {en} } @inproceedings{Molkenthin2004, author = {Molkenthin, Frank}, title = {Web-based Information Systems: Data Monitoring, Analysis and Reporting for Measurements and Simulations}, doi = {10.25643/bauhaus-universitaet.118}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1184}, year = {2004}, abstract = {This paper describes the concept, implementation and application of the Web-based Information System 'Turtle' for data monitoring, analysis, reporting and management in engineering projects. The system uses a generalised object-oriented approach for information modelling of physical state variables from measurements and simulations by sets of tensor objects and is implemented platform-independently as a Web application. This leads to a more flexible handling of measurement and simulation information in distributed and interdisciplinary engineering projects based on the concept of information sharing. The potential and advantages of Web-based information systems like 'Turtle' are described for one selected application example: a measurement programme dealing with the physical limnology of Lake Constance.}, subject = {Mobile Computing}, language = {en} } @article{MironovPahl2004, author = {Mironov, Vadim and Pahl, Peter Jan}, title = {A Prismatic Finite Element for Accurate Arch Dam Analysis}, doi = {10.25643/bauhaus-universitaet.246}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2467}, year = {2004}, abstract = {The displacements and stresses in arch dams and their abutments are frequently determined with 20-node brick elements. The elements are distorted near the contact plane between the wall and the abutment. A cantilever beam testbed has been developed to investigate the consequences of this distortion. It is shown that the deterioration of the accuracy in the computed stresses is significant. A compatible 18-node wedge element with linear stress variation is developed as an alternative to the brick element. The shape of this element type is readily adapted to the shape of the contact plane. It is shown that the accuracy of the computed stresses in the vicinity of the contact plane is improved significantly by the use of wedge elements.}, subject = {Finite-Elemente-Methode}, language = {en} } @inproceedings{MilesTaylorAnumba2004, author = {Miles, John and Taylor, Mark and Anumba, Chimay}, title = {VRML Virtual Worlds - An Alternative to the Desktop Metaphor for GUI's?}, doi = {10.25643/bauhaus-universitaet.185}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1855}, year = {2004}, abstract = {Metaphors are commonly used by software developers in the creation of GUI's. This paper looks at the use of multi-user VRML to create virtual metaphors, developing a conceptual design tool that can be used intuitively with little or no training.}, subject = {Architektur}, language = {en} } @inproceedings{MilesJoitaBurnap2004, author = {Miles, John and Joita, Liviu and Burnap, Peter}, title = {Collaborative Engineering: Virtual Teams in a Grid Environment Supporting Consortia in the Construction Industry}, doi = {10.25643/bauhaus-universitaet.136}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1362}, year = {2004}, abstract = {In the AEC (Architecture / Engineering / Construction) industry a number of individuals and organisations collaborate and work jointly on a construction project. The resulting consortium has large pool of expertise and experience and can be defined as a Virtual Organisation (VO) formed for the duration of the project. VOs are electronically networked organisations where IT and web based communication technology play an important role in coordinating various activities of these organisations. This paper describes the design, development and implementation of a Grid enabled application called the Product Supplier Catalogue Database (PSCD) which supports collaborative working in consortia. As part of the Grid-enabling process, specialised metadata is being developed to enable PSCD to effectively utilise Grid middleware such as Globus and Java CoG toolkits. We also describe our experience whilst designing, developing and deploying the security service of the application using the Globus Security Interface (GSI).}, subject = {Ingenieurbau}, language = {en} } @inproceedings{MilesCenTaylor2004, author = {Miles, John and Cen, Mei and Taylor, Mark}, title = {Linking Sketching and Constraint Checking for Early Conceptual Design}, doi = {10.25643/bauhaus-universitaet.1548}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1547}, year = {2004}, abstract = {At the start of the conceptual design process, designers start to give tangible form to their thoughts by sketching. This helps with reasoning and communicates ideas to other members of the team. Sketches are gradually worked up into more formal drawings which are then passed to the other stages of the design process. There are however some problems with basing early ideas on sketching. For example, due to their ad-hoc nature, sketches tend only to be diagrammatic representations and so designers cannot be sure that their ideas are feasible and what is being proposed meets the constraints described in the client brief. This can result in designers wasting time working up ideas which prove to be unsuitable. Also the process of constraint checking is complex and time consuming and so designers tend limit their search of possible options and instead choose satisfying rather than good solutions. This paper describes the INTEGRA project which examines the role of sketching in early conceptual design and how this can be linked to other aspects of the process and particularly automated constraint checking using an IT based approach. The focus for the work is the design of framed buildings. A multi-disciplinary approach has been adopted and the work has been undertaken in close collaboration with practising designers and clients.}, subject = {Konzipieren }, language = {en} }