@phdthesis{Elrasoul,
  author    = {Elrasoul, Riham},
  title     = {Designing Urban National Memory},
  doi       = {10.25643/bauhaus-universitaet.4048},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191212-40489},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {The study of memory, architecture, and urban space has been the interest ‎of ‎researchers ‎from the diverse fields around the world due to, the significance of dealing ‎with ‎memories ‎especially after the tragedy of the Second World War. Nations in Europe has chosen ‎not to ‎neglect ‎their past, moreover, overcoming it by strengthening the national identity. An ‎approach was clear in ‎the literature, art, further in the way of rebuilding their cities; that mainly ‎has reflected on the ‎value of urban spaces and their role in narrating the country's national ‎memory. Thanks to this ‎approach, which has supported the post-war European nations to invite ‎to an act of ‎ forgiveness rather than to forget. ‎ On the contrary, memory, in relation to architecture is a form of knowledge has been ‎neglected in Egypt, especially during the previous decades after the declaration of independence ‎from the colonial power, and since 1952 revolution. Recently, a rising debate about Egypt ‎national history and the need to renationalize the Egyptian historical consciousness has rapidly ‎grown up, due to the political transformation has occurred because of the 25th uprising, 2011, ‎which unveiled the power of public spaces in constituting the nation thoughts, especially Tahrir ‎square.‎ At the same time, this has unveiled the results of neglecting the past instead of overcoming it; unveiled a present carries the danger of conflict and repeating previous mistakes. Researchers, historians, politicians, governmental organization, have ‎worked in the purpose of revisiting the historical information, and have tried to document the ‎current transformation of the 25th uprising. There was a public demand for redesigning Tahrir square to reflect the ‎memory of the uprising as a symbol of the power of the public. However, after eight years, those ‎memories have faded as if the 25th uprising has never happened. ‎ Those circumstances are very relevant to the gap between urban design and the art of ‎memory-work, in the scientific field. Few studies in Egypt conducted the concept of memory in ‎relation to urban spaces, however, the matter requires more attention, to associate the need for renationalizing Egypt ‎memory, with viewing urban space as a mean of narrating the country's national memory and ‎reflecting the citizens' current thoughts, as a try of nearing the distances between ‎competing ‎narratives. Therefore, the research aims at developing a methodological framework that should ‎contribute to renationalizing memory through urban space. Further, benefiting from the German experience by investigating lessons to learn. That is based on the hypothesis that, although there is no fixed formula for all countries to renationalize the historical ‎consciousness of memory through urban spaces, lessons to be learned from Germany experience ‎could be a driving dimension when designing Egyptian urban spaces with a concept of memory ‎as an essential factor. To guide the validity of the study's hypothesis, a set of research questions are thus ‎formulated: Starting from why memory is an essential factor when designing urban spaces? ‎Regarding Egypt national memory, how it was constituted through history and how to read its ‎representation on urban spaces? Also, the study quests the means of nationalizing memory ‎through urban spaces? And What are the learned lessons from the German experience?‎ The study tries to answer those questions. Via an inductive ‎analytical ‎methodology ‎which ‎moves from the gap of knowledge and from a particular situation ‎in Egypt, to study the German ‎experience in renationalizing the concept of memory through urban spaces.‎ ‎ Within the scope of the study, exploring Egypt prevailing narratives and the inherited ‎concepts which influenced the national memory is essential. Moreover, the research develops ‎analytical political psychosocial model that could help reading memories in urban spaces, ‎memory's actors, and memory influences. To validate this model, case studies are analysed in ‎light of the concluded aspects. Consequently, the expected result is to infer broad general ‎learned ‎lessons for the Egyptian case. ‎ Research findings and conclusions answer the research questions, interpret literature ‎review, recommend some guide points to three target groups: first, practice field; to encourage ‎designers to value the national and collective memories when designing urban spaces. Second, to ‎ask policymakers to take the public participation into consideration, when taking decisions related to urban ‎development. Third, the thesis recommends future researches of urban memory that connect ‎theoretical information with the practice field. ‎ Finally, enhancing the memory-work in relation to the national narrative, conveying a meaningful message, when ‎designing urban spaces could encourage citizens to learn, to interact, and to dissolve boundaries ‎between the competing narratives in post-conflict societies.‎},
  subject      = {Erinnerung},
  language  = {en}
}
@phdthesis{Hasche,
  author    = {Hasche, Katja},
  title     = {Substanz, Struktur oder Bild? Denkmalpflegerische Erfassung von Siedlungen und Wohnanlagen der 1950er bis 1980er Jahre in Westeuropa},
  doi       = {10.25643/bauhaus-universitaet.3998},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191011-39983},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {199},
  abstract  = {Die Dissertation umfasst eine vertiefende Untersuchung der denkmalpflegerischen Erfassung von Siedlungen und Wohnanlagen als eine der wichtigsten und umfangreichsten Bautypologien der 1950er bis 1980er Jahre in Westeuropa. Die Besch{\"a}ftigung mit Bauten der 1950er bis 1980er Jahre f{\"u}hrt bei Denkmalpflegern, Architekten, Bewohnern und Politikern immer wieder zu {\"U}berlegungen, ob diese besondere Erfassungs- und Erhaltungsstrategien erfordern. Dabei wirft die Typologie des Siedlungsbaus besondere Fragen auf, da sie neben architektonischen Aspekten auch st{\"a}dtebauliche, landschaftsplanerische und sozialwissenschaftliche Bedeutungsebenen umfasst. Nicht zuletzt sind Siedlungen der 1950er bis 1980er Jahre aus denkmalpflegerischer Sicht h{\"a}ufig stark gef{\"a}hrdet. Obwohl die meisten Siedlungen noch nicht ausreichend kunsthistorisch gew{\"u}rdigt und erfasst sind, unterliegen sie einem hohen Ver{\"a}nderungsdruck. Die teilweise enorme st{\"a}dtebauliche Dimension und Monofunktionalit{\"a}t der Anlagen, die h{\"a}ufig aufgrund von seriellen Bautypen und vorfabrizierten Elementen gleichf{\"o}rmige architektonische Gestaltung und eine Vernachl{\"a}ssigung im Bauunterhalt erschweren den Zugang zu dieser Baugattung. Gewandelte Wohnbed{\"u}rfnisse sowie bauphysikalische, energietechnische oder {\"a}sthetische Maßnahmen f{\"u}hren zur Ver{\"a}nderung der noch relativ jungen Bausubstanz. Zudem weisen Siedlungen der Nachkriegszeit aufgrund ihrer teilweise sehr großz{\"u}gigen Freiraumstruktur ein großes Potential zur Nachverdichtung auf. Die Auswahl der in dieser Arbeit untersuchten L{\"a}nder und Siedlungen ergab sich aus der Auswertung einer europaweiten Befragung von Denkmal{\"a}mtern sowie anschließend gef{\"u}hrten Gespr{\"a}chen mit Fachleuten. Die untersuchten 20 Siedlungen und Wohnanlagen repr{\"a}sentieren verschiedene L{\"a}nder (Deutschland, {\"O}sterreich, Schweiz, Frankreich, Niederlande, England) sowie Bauepochen und Siedlungstypologien, die von der Einfamilienhaussiedlung {\"u}ber Siedlungen mit gemischter Bautypologie hin zur Großsiedlung reichen. Anhand der unterschiedlichen Fallbeispiele wird aufgezeigt, inwiefern die jeweiligen L{\"a}nder, Bauepochen beziehungsweise Siedlungstypologien Einfluss auf die denkmalpflegerischen Erfassungsstrategien haben. Zusammenfassend l{\"a}sst sich res{\"u}mieren, dass die Gesetzesgrundlagen und Denkmalkriterien f{\"u}r eine denkmalpflegerische Erfassung von Bauten der 1950er bis 1980er Jahre in den meisten L{\"a}ndern konstant bleiben, w{\"a}hrend sich in den Bereichen Zeitpunkt, Auswahl und Einbindung der {\"O}ffentlichkeit eine Modifizierung oder zumindest eine Reflektion der bisherigen Strukturen abzeichnet. Sinnvoll und w{\"u}nschenswert erscheint dar{\"u}ber hinaus ein verst{\"a}rkter Austausch der Denkmalpflege {\"u}ber die nationalen Grenzen hinweg und ein gegenseitiges Lernen voneinander.},
  subject      = {Architektur},
  language  = {de}
}
@phdthesis{Kessler2018,
  author    = {Keßler, Andrea},
  title     = {Matrix-free voxel-based finite element method for materials with heterogeneous microstructures},
  doi       = {10.25643/bauhaus-universitaet.3844},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190116-38448},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {113},
  year      = {2018},
  abstract  = {Modern image detection techniques such as micro computer tomography (μCT), magnetic resonance imaging (MRI) and scanning electron microscopy (SEM) provide us with high resolution images of the microstructure of materials in a non-invasive and convenient way. They form the basis for the geometrical models of high-resolution analysis, so called image-based analysis. However especially in 3D, discretizations of these models reach easily the size of 100 Mill. degrees of freedoms and require extensive hardware resources in terms of main memory and computing power to solve the numerical model. Consequently, the focus of this work is to combine and adapt numerical solution methods to reduce the memory demand first and then the computation time and therewith enable an execution of the image-based analysis on modern computer desktops. Hence, the numerical model is a straightforward grid discretization of the voxel-based (pixels with a third dimension) geometry which omits the boundary detection algorithms and allows reduced storage of the finite element data structure and a matrix-free solution algorithm. This in turn reduce the effort of almost all applied grid-based solution techniques and results in memory efficient and numerically stable algorithms for the microstructural models. Two variants of the matrix-free algorithm are presented. The efficient iterative solution method of conjugate gradients is used with matrix-free applicable preconditioners such as the Jacobi and the especially suited multigrid method. The jagged material boundaries of the voxel-based mesh are smoothed through embedded boundary elements which contain different material information at the integration point and are integrated sub-cell wise though without additional boundary detection. The efficiency of the matrix-free methods can be retained.},
  subject      = {Dissertation},
  language  = {en}
}
@phdthesis{MizrakBilen,
  author    = {Mizrak Bilen, Burcin},
  title     = {A Power-Centered Approach to the Capitalization of Climate Change in Property Sector and Strategic Limitation},
  doi       = {10.25643/BAUHAUS-UNIVERSITAET.3840},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190107-38406},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {256},
  abstract  = {The capitalization of 'certified' sustainable building sector will be investigated over the power theory of value approach of Jonathan Nitzan and Shimshon Bichler. The study will be initiated by questioning why the environment problems are one of the first items on the agenda and by sharing the ideas of scholars who approaches the subject skeptically, because the predominant literature underlying the necessity and prominence of the topic is already well-known and adapted by the majority. Over the theory developed by Nitzan and Bichler, the concepts of capitalization, strategic sabotage, power, legitimacy, and obedience will be discussed. The hypothesis of "the absentee owners of the construction sector, holding the whip hand and capitalizing the ecology, control the growth and the creativity of green building production and make it carbon-dependent, in order to increase their profit margin" will be questioned. To strengthen the arguments in the hypothesis, the factors, the institutional arrangements, value measurement methods, which affect directly the net present value, will be investigated both in corporation and in building scale in detail, because net present value/ capitalization is asserted as the most important criteria by Nitzan and Bichler to make the investment decisions in the capitalist economic system. To trace the implications of power and the strategic sabotage that power caused, as the empirical dimension of this dissertation, an interface exploring the correlational ties between the climate responsive architecture and the ever changing political, economical, and social contexts and building economics praxis by decades will be developed and the expert interviews will be conducted with the design teams and the appraisers.},
  subject      = {Klima{\"a}nderung},
  language  = {en}
}
@phdthesis{Strassmann,
  author    = {Straßmann, Sarah},
  title     = {Expanded Pictures: Das Handlungsgef{\"u}ge des fotografischen Bildes im Kontext von Internet und Social Media},
  doi       = {10.25643/bauhaus-universitaet.3838},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190102-38388},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {164},
  abstract  = {In der vorliegenden Arbeit wird die Bedeutung und Funktion des fotografischen Bildes und im Besonderen der Handyfotografie im Kontext von Internet und sozialen Onlinenetzwerken beschrieben, untersucht und diskutiert. Im Spannungsfeld zwischen sozialwissenschaftlichen Theorien, foto- und medientheoretischem Diskurs sowie {\"a}sthetisch k{\"u}nstlerischen Perspektiven wird ausgelotet, welche konkreten visuellen und sozialen Formen die gegenw{\"a}rtige mobile digitale Bildpraxis angenommen hat, wie sich ihre Gebrauchsweise innerhalb des globalen gesellschaftlichen Alltags darstellt, und in welcher Weise ihr spezielles Zusammenspiel aus „shooting", „uploading", „sharing" zu neuen menschlichen Handlungsmustern und zur Schaffung neuer kultureller Realit{\"a}ten beitr{\"a}gt.},
  subject      = {Digitale Fotografie},
  language  = {de}
}
@phdthesis{Everts,
  author    = {Everts, Lotte},
  title     = {"Hey! I'm an Angel!" Zum Verh{\"a}ltnis von Medium, Subjekt und Wirklichkeit in Eija-Liisa Ahtilas Videoinstallationen},
  doi       = {10.25643/bauhaus-universitaet.3947},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190730-39471},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {229},
  abstract  = {Die Dissertation „Hey! I'm an Angel! Zum Verh{\"a}ltnis von Medium, Subjekt und Wirklichkeit in Eija-Liisa Ahtilas Videoinstallationen" untersucht in der Hauptsache vier zentrale Videoinstallationen Ahtilas aus den Jahren 1995 bis 2014. Grundlegend ist die These, dass Ahtilas Arbeiten nicht, wie bisher angenommen, in den Kontext einer medien-, erkenntnis- und subjektkritischen Videokunst einzuordnen sind. Stattdessen werden sie als mediale Vehikel intersubjektiv gepr{\"a}gter Wirklichkeitserfahrungen f{\"u}r das Subjekt bereitgestellt: Entgegen dem aktuellen Forschungsstand arbeitet sich Ahtila nicht an der Kritik des Mediums Film/Video ab, das einen wirklichkeitsverf{\"a}lschenden oder -ersetzenden Einfluss auf das manipulierte Subjekt nimmt. Vielmehr nutzt die K{\"u}nstlerin das Potenzial des Mediums Film/Video aus, um einem relativ stabilen Subjekt die Wirklichkeitserfahrungen Anderer zu {\"o}ffnen und auf diese Weise seinen Erfahrungshorizont zu erweitern. Der systematische Schwerpunkt der Arbeit liegt erstens darauf, ein sich durch Ahtilas bisheriges Schaffen ziehendes ‚Ziel' der Integration der Betrachterin in eine intersubjektive Erfahrungssph{\"a}re nachvollziehbar zu machen. Hierf{\"u}r wird insbesondere eine Perspektive auf die fr{\"u}hen Arbeiten entwickelt, in der die Br{\"u}che in Ahtila Arbeiten integrative statt distanzierende Wirkung haben. Zweitens wird in eingehenden Analysen der Wandel verst{\"a}ndlich, der sich zwischen Ahtilas fr{\"u}her Schaffensphase (1995 - 2002) und der aktuellen Schaffensphase (seit 2010) hinsichtlich der Art und Weise vollzieht, wie diese Integration gelingt. Es zeigt sich, dass der Einstieg in die intersubjektiv gepr{\"a}gten Erfahrungssph{\"a}ren in der fr{\"u}hen Phase {\"a}sthetisch konstituiert ist. Mit der aktuellen Schaffensphase werden hingegen allt{\"a}gliche Formen der Empathie und Mimesis zentral, sowie deren leibliche Konsequenzen f{\"u}r die Betrachterin. Drittens wird eine zunehmende pragmatische Tendenz darin deutlich, die Integration der Betrachterin in die Erfahrungen Anderer zu erm{\"o}glichen. Dies wird vor dem Hintergrund eines allgemeinen pragmatischen Zuges aktueller zeitgeistiger Bewegungen erl{\"a}utert. Viertens wird gezeigt, dass Ahtilas Arbeiten auf der Annahme einer Kontinuit{\"a}t in gewisser Hinsicht von der außerfilmischen Wirklichkeit in die filmische Fiktion hinein basieren, sowie auf dem Verst{\"a}ndnis filmischer Fiktionen als virtuelle Weltfassungen. Ahtila fragt auf der Grundlage dieses Verst{\"a}ndnisses filmischer Fiktion nicht nach der Wahrheit dieser Fiktion als These {\"u}ber die Wirklichkeit, wie es dem Forschungskanon {\"u}ber die K{\"u}nstlerin zu entnehmen ist. Sondern nach der Wirksamkeit der filmischen Fiktion f{\"u}r die Wirklichkeit.},
  subject      = {Videokunst},
  language  = {de}
}
@phdthesis{Jahreis,
  author    = {Jahreis, Markus},
  title     = {Zur Entwicklung von Polymerverguss-Kopplungselementen f{\"u}r den Holzbau},
  doi       = {10.25643/bauhaus-universitaet.3945},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190731-39458},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {229},
  abstract  = {Den Schwerpunkt der vorliegenden Arbeit bilden die konstruktive Entwicklung und die wissenschaftliche Untersuchung des Tragverhaltens von Kopplungselementen f{\"u}r den Ingenieur¬holzbau. Die neu entwickelten Verbindungen bestehen bevorzugt aus Stahlteilen mit Gewindeanschluss und werden mit einem Polymerverguss im Holz verankert. Die Kopplungselemente gestatten die einfache montagegerechte Verbindung von Holzbauteilen untereinander oder zu anderen Bauweisen. Sie nehmen die Zug- oder Drucklast axial auf und gew{\"a}hrleisten eine leistungsf{\"a}hige und schlupf¬freie Verbindung zum Holz. F{\"u}r den Verguss wird ein mineralisch gef{\"u}lltes Epoxidharz mit sehr guten Klebeeigenschaften gegen{\"u}ber Holz und den meisten {\"u}blichen Baustoffen verwendet. Im Holz werden f{\"u}r die Verankerung der Kopplungselemente Bohrungen vorgesehen, die sich sowohl aus technologischen Gr{\"u}nden als auch f{\"u}r eine gleichm{\"a}ßige Spannungsverteilung vorteilhaft erweisen. Der Durchmesser der Bohrung ist gegen{\"u}ber dem Verbindungselement deutlich gr{\"o}ßer, wodurch die Verbindungsfl{\"a}che zum Holz bei konstanter L{\"a}nge ansteigt. Die Vergr{\"o}ßerung der Fugen zwischen dem Verbindungselement und der Holzwandung von 7 mm auf 17 mm f{\"u}hrt bei konstanter Einbindetiefe und gleichem Durchmesser des Verbin¬dungsmittels zu einer Laststeigerung von {\"u}ber 20 \%. Die gr{\"o}ßere Vergussfuge gew{\"a}hrleistet dar{\"u}ber hinaus eine Vergleichm{\"a}ßigung der Spannungen innerhalb der Verbindung, den Ein¬satz von frei geformten Verbindungselementen und eine Vereinfachung der Herstellung. Die Kopplungselemente sind f{\"u}r den Einsatz in Zug- oder Druckst{\"o}ßen ebenso geeignet wie f{\"u}r biegesteife Anschl{\"u}sse axial verbundener Biegetr{\"a}ger oder Rahmenecken. Sie k{\"o}nnen werkseitig im Holzbauteil vorgesehen oder als direkte Verbindung auf der Baustelle vergossen werden. F{\"u}r die Baupraxis wird durch den Einsatz des schwindarmen Verguss-materials mit hoher Klebewirkung eine Bandbreite an Anwendungen vom Toleranzausgleich {\"u}ber Schubbewehrung bis zum Druck-, Zug- oder Biegeanschluss geboten.},
  subject      = {Holzbau},
  language  = {de}
}
@phdthesis{PuentesRivera,
  author    = {Puentes-Rivera, Yomayra},
  title     = {WHISPERS OF MEMORY, MURMURS OF HISTORY ACOUSTIC MONU-MEMORIALS IN PUBLIC SPACES. Exploratory research of strategies used to create acoustic experiences of commemoration, remembrance, mourning and memory},
  doi       = {10.25643/bauhaus-universitaet.3932},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190603-39323},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {265},
  abstract  = {This research seeks to make an exploratory study of the strategies used by the creators of monuments, memorials, and commemorative places located in the public spaces that use sound as one of the primary raw material in their design. The term acoustic monu-memorials was coined in this research to encircle these structures and places. In order to achieve the goal of this research, it was necessary to compile a number of samples, primarily after the digital recording era of captured sound around 1971 to the present. The compilation was relevant because such a compendium was not found in the literature, and to the author's knowledge, a comprehensive investigation of the strategies used in planning acoustic monu-memorials in the urban spaces does not exist. The method used to create such compendium was to send a question to people with different background identities, such as visual and sound artists, musicians, art curators, and heritage scholars among others. This question produced a selection of 51 examples of acoustic monu-memorials located in public spaces. Subsequently, the examples were classified into four major categories according to their form and nature. Additionally, two examples from the main categories were chosen as case studies: The Sinti and Roma Memorial in Berlin, Germany and the Niche monument in Cali, Colombia. These study cases were presented, described, and analysed in detail as they represent the type of what could be defined as an acoustic monu-memorial in general. Lynch's (1960) five elements that help individuals build the image of the city were transferred and used as a tool to help to build this image into acoustic terms. A thorough analysis of the acquired data yielded found the strategies used by the designers to shape, modify, transform, and structure public space. These strategies are entitled Sound Spaces. Moreover, a list entitled Urban Acoustic Commemoration Code was compiled. This list of suggestions addresses urban planners, architects, artists, designers, and general public interested in the aspects involved when creating acoustic commemoration phenomena in public spaces.},
  subject      = {Stadtentwicklung},
  language  = {en}
}
@phdthesis{Voelske,
  author    = {V{\"o}lske, Michael},
  title     = {Retrieval Enhancements for Task-Based Web Search},
  doi       = {10.25643/bauhaus-universitaet.3942},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190709-39422},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {The task-based view of web search implies that retrieval should take the user perspective into account. Going beyond merely retrieving the most relevant result set for the current query, the retrieval system should aim to surface results that are actually useful to the task that motivated the query. This dissertation explores how retrieval systems can better understand and support their users' tasks from three main angles: First, we study and quantify search engine user behavior during complex writing tasks, and how task success and behavior are associated in such settings. Second, we investigate search engine queries formulated as questions, and explore patterns in a large query log that may help search engines to better support this increasingly prevalent interaction pattern. Third, we propose a novel approach to reranking the search result lists produced by web search engines, taking into account retrieval axioms that formally specify properties of a good ranking.},
  subject      = {Information Retrieval},
  language  = {en}
}
@phdthesis{Alalade,
  author    = {Alalade, Muyiwa},
  title     = {An Enhanced Full Waveform Inversion Method for the Structural Analysis of Dams},
  doi       = {10.25643/bauhaus-universitaet.3956},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190813-39566},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {Since the Industrial Revolution in the 1700s, the high emission of gaseous wastes into the atmosphere from the usage of fossil fuels has caused a general increase in temperatures globally. To combat the environmental imbalance, there is an increase in the demand for renewable energy sources. Dams play a major role in the generation of "green" energy. However, these structures require frequent and strict monitoring to ensure safe and efficient operation. To tackle the challenges faced in the application of convention dam monitoring techniques, this work proposes the inverse analysis of numerical models to identify damaged regions in the dam. Using a dynamic coupled hydro-mechanical Extended Finite Element Method (XFEM) model and a global optimization strategy, damage (crack) in the dam is identified. By employing seismic waves to probe the dam structure, a more detailed information on the distribution of heterogeneous materials and damaged regions are obtained by the application of the Full Waveform Inversion (FWI) method. The FWI is based on a local optimization strategy and thus it is highly dependent on the starting model. A variety of data acquisition setups are investigated, and an optimal setup is proposed. The effect of different starting models and noise in the measured data on the damage identification is considered. Combining the non-dependence of a starting model of the global optimization strategy based dynamic coupled hydro-mechanical XFEM method and the detailed output of the local optimization strategy based FWI method, an enhanced Full Waveform Inversion is proposed for the structural analysis of dams.},
  subject      = {Talsperre},
  language  = {en}
}
@phdthesis{Chen,
  author    = {Chen, Na},
  title     = {A Balance between Ideals and Reality — Establishing and Evaluating a Resilient City Indicator System for Central Chinese Cities},
  doi       = {10.25643/bauhaus-universitaet.4030},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191121-40309},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {212},
  abstract  = {Recent years have seen a gradual shift in focus of international policies from a national and regional perspective to that of cities, a shift which is closely related to the rapid urbanization of developing countries. As revealed in the 2011 Revision of the World Urbanization Prospects published by the United Nations, 51\% of the global population (approximately 3.6 billion people) lives in cities. The report predicts that by 2050, the world's urban population will increase by 2.3 billion, making up 68\% of the population. The growth of urbanization in the next few decades is expected to primarily come from developing countries, one third of which will be in China and India. With rapid urbanization and the ongoing growth of mega cities, cities must become increasingly resilient and intelligent to cope with numerous challenges and crises like droughts and floods arising from extreme climate, destruction brought by severe natural disasters, and aggregated social contradictions resulting from economic crises. All cities face the urban development dynamics and uncertainties arising from these problems. Under such circumstances, cities are considered the critical path from crisis to prosperity, so scholars and organizations have proposed the construction of "resilient cities." On the one hand, this theory emphasizes cities' defenses and buffering capacity against disasters, crises and uncertainties, as well as recovery after destruction; on the other hand, it highlights the learning capacity of urban systems, identification of opportunities amid challenges, and maintenance of development vitality. Some scholars even believe that urban resilience is a powerful supplement to sustainable development. Hence, resilience assessment has become the latest and most important perspective for evaluating the development and crisis defense capacity of cities. Rather than a general abstract concept, urban resilience is a comprehensive measurement of a city's level of development. The dynamic development of problems is reflected through quantitative indicators and appraisal systems not only from the perspective of academic research, but also governmental policy, so as to scientifically guide development, and measure and compare cities' development levels. Although international scholars have proposed quantitative methods for urban resilience assessment, they are however insufficiently systematic and regionally adaptive for China's current urban development needs. On the basis of comparative study on European and North American resilient city theories, therefore, this paper puts forwards a theoretical framework for resilient city systems consistent with China's national conditions in light of economic development pressure, natural resource depletion, pollution, and other salient development crises in China. The key factors influencing urban resilience are taken into full consideration; expert appraisal is conducted based on the Delphi Method and the analytic hierarchy process (AHP) to design an extensible and updatable resilient city evaluation system which is sufficiently systematic, geographically adaptable, and sustainable for China's current urban development needs. Finally, Changsha is taken as the main case for empirical study on comprehensive evaluation of similar cities in Central China to improve the indicator system.},
  subject      = {Stadtplanung},
  language  = {en}
}
@phdthesis{Tasch,
  author    = {Tasch, Alexander},
  title     = {Reaktive Cu-Fe-Al-Mn-Oxidkeramiken f{\"u}r die Sauerstoffseparation aus der Luft},
  doi       = {10.25643/bauhaus-universitaet.4041},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191209-40414},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {Die Gase Sauerstoff und Stickstoff werden f{\"u}r eine Vielzahl an technischen, industriellen, biologischen und medizinischen Einsatzzwecken ben{\"o}tigt. So liegen Anwendungsgebiete dieser Gase neben der klassischen metallverarbeitenden und der chemischen Industrie bei Sauerstoff vor allem in der Medizin, Verbrennungs- und Kl{\"a}ranlagenoptimierung sowie der Fischzucht und bei Stickstoff als Schutz- beziehungsweise Inertgas in der Kunststoffindustrie, der Luft- und Raumfahrt sowie dem Brandschutz. Die Bereitstellung der Gase Sauerstoff und Stickstoff wird nahezu ausschließlich durch die Abtrennung aus der Umgebungsluft realisiert, welche aus ca. 78 Vol.-\% Stickstoff, 21 Vol.-\% Sauerstoff und 1 Vol.-\% Spurengasen (Ar, CO2, Ne, He, ...) besteht. Am Markt etablierte Verfahren der Luftzerlegung sind das Linde-, das PSA- (pressure swing adsorption/Druckwechseladsorption) oder verschiedene Membran-Verfahren. Hierdurch werden die ben{\"o}tigten Gase entweder direkt vor Ort beim Verbraucher erzeugt (PSA- und Polymer-Membranverfahren: geringe Reinheiten) oder zentral in großen Anlagen hergestellt (Linde-Verfahren: hohe Reinheiten) und anschließend zum Verbraucher in Form von Flaschen- oder Tankgasen geliefert (Tansportkosten). F{\"u}r kleinere Verbraucher mit hohen Anspr{\"u}chen an die Reinheit des ben{\"o}tigten Sauerstoffs beziehungsweise Stickstoffs ergibt sich nur die M{\"o}glichkeit, die Gase als kostenintensive Transportgase zentraler Gaseversorger zu beziehen und sich somit in eine Abh{\"a}ngigkeit (Liefervertr{\"a}ge, Flaschen-/Tankmieten, ...) zu diesen zu begeben sowie eine eigene Lagerhaltung f{\"u}r die ben{\"o}tigten Gase (Mehraufwand, Lagerkosten, Platzbedarf) zu betreiben. Ziel dieser Arbeit ist es, keramische Material-Systeme auf Basis chemischer Hochtemperatur-Reaktionen als Reaktive Oxidkeramiken zu entwickeln und diese hinsichtlich eines m{\"o}glichen Einsatzes f{\"u}r die Sauerstoffseparation in neuartigen Luftzerlegungsanlagen zu untersuchen. Derartige Anlagen sollen in ihrem Prinzip an die regenerative Sauerstoffseparation angelehnt sein und in ihren Reaktoren die Reaktiven Oxidkeramiken als Festbett-Material abwechselnd mit Luft be- und Vakuum oder O2-armen Atmosph{\"a}ren entladen. Die Verwendung Reaktiver Oxidkeramiken, welche im Vergleich zu den bisherigen Materialien h{\"o}here Sauerstoffaustauschmengen und -raten bei gleichzeitig hoher Lebensdauer und Korrosionsbest{\"a}ndigkeit sowie relativ einfacher Handhabe aufweisen w{\"u}rden, soll ein Schritt in Richtung einer effizienten alternativen Luftzerlegungstechnologie sein. Mit den Reaktiven Oxidkeramiken in einer Luftzerlegungsanlage sollte es im besten Fall m{\"o}glich sein, in kleinen Anlagen sehr reinen Sauerstoff und zugleich sauerstofffreies Inertgas zu erzeugen sowie eine Sauerstoffan- oder -abreicherung von Luft, Prozess- oder Abgasen zu generieren. Somit bes{\"a}ße eine solche, auf Reaktiven Oxidkeramiken basierende Technologie sehr weit gef{\"a}cherte Einsatzgebiete und demzufolge ein enormes wirtschaftliches Potential.},
  subject      = {Luftzerlegung},
  language  = {de}
}
@phdthesis{Hossain,
  author    = {Hossain, Md Naim},
  title     = {Isogeometric analysis based on Geometry Independent Field approximaTion (GIFT) and Polynomial Splines over Hierarchical T-meshes},
  doi       = {10.25643/bauhaus-universitaet.4037},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191129-40376},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {157},
  abstract  = {This thesis addresses an adaptive higher-order method based on a Geometry Independent Field approximatTion(GIFT) of polynomial/rationals plines over hierarchical T-meshes(PHT/RHT-splines). In isogeometric analysis, basis functions used for constructing geometric models in computer-aided design(CAD) are also employed to discretize the partial differential equations(PDEs) for numerical analysis. Non-uniform rational B-Splines(NURBS) are the most commonly used basis functions in CAD. However, they may not be ideal for numerical analysis where local refinement is required. The alternative method GIFT deploys different splines for geometry and numerical analysis. NURBS are utilized for the geometry representation, while for the field solution, PHT/RHT-splines are used. PHT-splines not only inherit the useful properties of B-splines and NURBS, but also possess the capabilities of local refinement and hierarchical structure. The smooth basis function properties of PHT-splines make them suitable for analysis purposes. While most problems considered in isogeometric analysis can be solved efficiently when the solution is smooth, many non-trivial problems have rough solutions. For example, this can be caused by the presence of re-entrant corners in the domain. For such problems, a tensor-product basis (as in the case of NURBS) is less suitable for resolving the singularities that appear since refinement propagates throughout the computational domain. Hierarchical bases and local refinement (as in the case of PHT-splines) allow for a more efficient way to resolve these singularities by adding more degrees of freedom where they are necessary. In order to drive the adaptive refinement, an efficient recovery-based error estimator is proposed in this thesis. The estimator produces a recovery solution which is a more accurate approximation than the computed numerical solution. Several two- and three-dimensional numerical investigations with PHT-splines of higher order and continuity prove that the proposed method is capable of obtaining results with higher accuracy, better convergence, fewer degrees of freedom and less computational cost than NURBS for smooth solution problems. The adaptive GIFT method utilizing PHT-splines with the recovery-based error estimator is used for solutions with discontinuities or singularities where adaptive local refinement in particular domains of interest achieves higher accuracy with fewer degrees of freedom. This method also proves that it can handle complicated multi-patch domains for two- and three-dimensional problems outperforming uniform refinement in terms of degrees of freedom and computational cost.},
  subject      = {Finite-Elemente-Methode},
  language  = {en}
}
@phdthesis{Doering,
  author    = {Doering, Chris},
  title     = {Die Informationsarchitektur der kommunalen Energiewende},
  doi       = {10.25643/bauhaus-universitaet.4051},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191219-40514},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {278},
  abstract  = {Die kommunale Energiewende stellt die beteiligten Akteure vor große Herausforderungen: Auf Grundlage strukturierter Daten sollen Maßnahmen
 f{\"u}r eine nachhaltige Infrastruktur geplant und umgesetzt werden. Oft fehlt
 den Beteiligten jedoch das n{\"o}tige Wissen {\"u}ber die lokalen Potentiale und Rahmenbedingungen—und an geeigneten Methoden der Informationsvermittlung. Gegenstand dieser Arbeit ist die Analyse der Planungsstrukturen und der Entwurf eines visuellen Informationssystems. Mit der vorliegenden Untersuchung wird gezeigt, wie mit Hilfe von Befragungen, partizipativen Visualisierungen, fiktionalen Szenarien und der systematischen Anwendung visueller Variablen eine fundierte Grundlage geschaffen werden kann f{\"u}r eine nutzerorientierte Gestaltung.},
  subject      = {Design},
  language  = {de}
}
@phdthesis{Sidjimovska,
  author    = {Sidjimovska, Ivana},
  title     = {Recounting Skopje. Skopje 2014: Symbolic and Citizens' Narratives},
  doi       = {10.25643/bauhaus-universitaet.4025},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20191119-40256},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {363},
  abstract  = {Focusing on the neoliberal symbolic urban reconstruction of the Macedonian capital, known as "Skopje 2014", the PhD work deals with urban space production through storytelling. Embracing the criticism put forward in the political, cultural and social debates that have spun around Skopje's reconstruction, the artistic-based research sought to relate and analyze the symbolic narratives of "Skopje 2014" and the vernacular and civic narratives of Skopje and locate overlapping, divergent, complementary or conflictual aspects of their respective narrative structures. Informed by subjective citizens' stories and experiences of the urban as well as binaural sonic observations of the city, the research findings were presented in the form of an interactive audio guided walk through the city. The thesis is organized in three chapters, preceded by an INTRODUCTION and followed by a CONCLUSION. CHAPTER ONE sets the theoretical context, presents the case study "Skopje 2014", and discusses the research design. The audio guided walk is presented in CHAPTER TWO. Its content consists of five tracks, or subchapters, conceptualized and named as five different aspects of the city: THE MODERNIST CITY, THE FEMALE CITY, THE MEMORY CITY, THE POSTCOMMUNIST CITY and THE TOURIST CITY, according to the discourses related to these tracks. CHAPTER THREE, the EPILOGUE, is the final discussion of the research project, in which several meta-conclusions are drawn.},
  subject      = {Stadtumbau},
  language  = {en}
}
@article{KavrakovLegatiukGuerlebecketal.,
  author    = {Kavrakov, Igor and Legatiuk, Dmitrii and G{\"u}rlebeck, Klaus and Morgenthal, Guido},
  title     = {A categorical perspective towards aerodynamic models for aeroelastic analyses of bridge decks},
  series = {Royal Society Open Science},
  journal   = {Royal Society Open Science},
  number    = {Volume 6, Issue 3},
  doi       = {/10.1098/rsos.181848},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190314-38656},
  pages     = {20},
  abstract  = {Reliable modelling in structural engineering is crucial for the serviceability and safety of structures. A huge variety of aerodynamic models for aeroelastic analyses of bridges poses natural questions on their complexity and thus, quality. Moreover, a direct comparison of aerodynamic models is typically either not possible or senseless, as the models can be based on very different physical assumptions. Therefore, to address the question of principal comparability and complexity of models, a more abstract approach, accounting for the effect of basic physical assumptions, is necessary. This paper presents an application of a recently introduced category theory-based modelling approach to a diverse set of models from bridge aerodynamics. Initially, the categorical approach is extended to allow an adequate description of aerodynamic models. Complexity of the selected aerodynamic models is evaluated, based on which model comparability is established. Finally, the utility of the approach for model comparison and characterisation is demonstrated on an illustrative example from bridge aeroelasticity. The outcome of this study is intended to serve as an alternative framework for model comparison and impact future model assessment studies of mathematical models for engineering applications.},
  subject      = {Br{\"u}cke},
  language  = {en}
}
@phdthesis{ZHANG2018,
  author    = {ZHANG, CHAO},
  title     = {Crack Identification using Dynamic Extended Finite Element Method and Thermal Conductivity Engineering for Nanomaterials},
  doi       = {10.25643/bauhaus-universitaet.3847},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190119-38478},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2018},
  abstract  = {Identification of flaws in structures is a critical element in the management of maintenance and quality assurance processes in engineering. Nondestructive testing (NDT) techniques based on a wide range of physical principles have been developed and are used in common practice for structural health monitoring. However, basic NDT techniques are usually limited in their ability to provide the accurate information on locations, dimensions and shapes of flaws. One alternative to extract additional information from the results of NDT is to append it with a computational model that provides detailed analysis of the physical process involved and enables the accurate identification of the flaw parameters. The aim here is to develop the strategies to uniquely identify cracks in two-dimensional 2D) structures under dynamic loadings. A local NDT technique combined eXtended Finite Element Method (XFEM) with dynamic loading in order to identify the cracks in the structures quickly and accurately is developed in this dissertation. The Newmark-b time integration method with Rayleigh damping is used for the time integration. We apply Nelder-Mead (NM)and Quasi-Newton (QN) methods for identifying the crack tip in plate. The inverse problem is solved iteratively, in which XFEM is used for solving the forward problem in each iteration. For a timeharmonic excitation with a single frequency and a short-duration signal measured along part of the external boundary, the crack is detected through the solution of an inverse time-dependent problem. Compared to the static load, we show that the dynamic loads are more effective for crack detection problems. Moreover, we tested different dynamic loads and find that NM method works more efficient under the harmonic load than the pounding load while the QN method achieves almost the same results for both load types. A global strategy, Multilevel Coordinate Search (MCS) with XFEM (XFEM-MCS) methodology under the dynamic electric load, to detect multiple cracks in 2D piezoelectric plates is proposed in this dissertation. The Newmark-b method is employed for the time integration and in each iteration the forward problem is solved by XFEM for various cracks. The objective functional is minimized by using a global search algorithm MCS. The test problems show that the XFEM-MCS algorithm under the dynamic electric load can be effectively employed for multiple cracks detection in piezoelectric materials, and it proves to be robust in identifying defects in piezoelectric structures. Fiber-reinforced composites (FRCs) are extensively applied in practical engineering since they have high stiffness and strength. Experiments reveal a so-called interphase zone, i.e. the space between the outside interface of the fiber and the inside interface of the matrix. The interphase strength between the fiber and the matrix strongly affects the mechanical properties as a result of the large ratio of interface/volume. For the purpose of understanding the mechanical properties of FRCs with functionally graded interphase (FGI), a closed-form expression of the interface strength between a fiber and a matrix is obtained in this dissertation using a continuum modeling approach according to the ver derWaals (vdW) forces. Based on the interatomic potential, we develop a new modified nonlinear cohesive law, which is applied to study the interface delamination of FRCs with FGI under different loadings. The analytical solutions show that the delamination behavior strongly depends on the interphase thickness, the fiber radius, the Young's moduli and Poisson's ratios of the fiber and the matrix. Thermal conductivity is the property of a material to conduct heat. With the development and deep research of 2D materials, especially graphene and molybdenum disulfide (MoS2), the thermal conductivity of 2D materials attracts wide attentions. The thermal conductivity of graphene nanoribbons (GNRs) is found to appear a tendency of decreasing under tensile strain by classical molecular dynamics (MD) simulations. Hence, the strain effects of graphene can play a key role in the continuous tunability and applicability of its thermal conductivity property at nanoscale, and the dissipation of thermal conductivity is an obstacle for the applications of thermal management. Up to now, the thermal conductivity of graphene under shear deformation has not been investigated yet. From a practical point of view, good thermal managements of GNRs have significantly potential applications of future GNR-based thermal nanodevices, which can greatly improve performances of the nanosized devices due to heat dissipations. Meanwhile, graphene is a thin membrane structure, it is also important to understand the wrinkling behavior under shear deformation. MoS2 exists in the stable semiconducting 1H phase (1H-MoS2) while the metallic 1T phase (1T-MoS2) is unstable at ambient conditions. As it's well known that much attention has been focused on studying the nonlinear optical properties of the 1H-MoS2. In a very recent research, the 1T-type monolayer crystals of TMDCs, MX2 (MoS2, WS2 ...) was reported having an intrinsic in-plane negative Poisson's ratio. Luckily, nearly at the same time, unprecedented long-term (>3months) air stability of the 1T-MoS2 can be achieved by using the donor lithium hydride (LiH). Therefore, it's very important to study the thermal conductivity of 1T-MoS2. The thermal conductivity of graphene under shear strain is systematically studied in this dissertation by MD simulations. The results show that, in contrast to the dramatic decrease of thermal conductivity of graphene under uniaxial tensile, the thermal conductivity of graphene is not sensitive to the shear strain, and the thermal conductivity decreases only 12-16\%. The wrinkle evolves when the shear strain is around 5\%-10\%, but the thermal conductivity barely changes. The thermal conductivities of single-layer 1H-MoS2(1H-SLMoS2) and single-layer 1T-MoS2 (1T-SLMoS2) with different sample sizes, temperatures and strain rates have been studied systematically in this dissertation. We find that the thermal conductivities of 1H-SLMoS2 and 1T-SLMoS2 in both the armchair and the zigzag directions increase with the increasing of the sample length, while the increase of the width of the sample has minor effect on the thermal conductions of these two structures. The thermal conductivity of 1HSLMoS2 is smaller than that of 1T-SLMoS2 under size effect. Furthermore, the temperature effect results show that the thermal conductivities of both 1H-SLMoS2 and 1T-SLMoS2 decrease with the increasing of the temperature. The thermal conductivities of 1HSLMoS2 and 1T-SLMoS2 are nearly the same (difference <6\%) in both of the chiral orientations under corresponding temperatures, especially in the armchair direction (difference <2.8\%). Moreover, we find that the strain effects on the thermal conductivity of 1HSLMoS2 and 1T-SLMoS2 are different. More specifically, the thermal conductivity decreases with the increasing tensile strain rate for 1T-SLMoS2, while fluctuates with the growth of the strain for 1HSLMoS2. Finally, we find that the thermal conductivity of same sized 1H-SLMoS2 is similar with that of the strained 1H-SLMoS2 structure.},
  subject      = {crack},
  language  = {en}
}
@phdthesis{Beck,
  author    = {Beck, Stephan},
  title     = {Immersive Telepresence Systems and Technologies},
  doi       = {10.25643/bauhaus-universitaet.3856},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190218-38569},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {149},
  abstract  = {Modern immersive telepresence systems enable people at different locations to meet in virtual environments using realistic three-dimensional representations of their bodies. For the realization of such a three-dimensional version of a video conferencing system, each user is continuously recorded in 3D. These 3D recordings are exchanged over the network between remote sites. At each site, the remote recordings of the users, referred to as 3D video avatars, are seamlessly integrated into a shared virtual scenery and displayed in stereoscopic 3D for each user from his or her perspective. This thesis reports on algorithmic and technical contributions to modern immersive telepresence systems and presents the design, implementation and evaluation of the first immersive group-to-group telepresence system in which each user is represented as realistic life-size 3D video avatar. The system enabled two remote user groups to meet and collaborate in a consistent shared virtual environment. The system relied on novel methods for the precise calibration and registration of color- and depth- sensors (RGBD) into the coordinate system of the application as well as an advanced distributed processing pipeline that reconstructs realistic 3D video avatars in real-time. During the course of this thesis, the calibration of 3D capturing systems was greatly improved. While the first development focused on precisely calibrating individual RGBD-sensors, the second stage presents a new method for calibrating and registering multiple color and depth sensors at a very high precision throughout a large 3D capturing volume. This method was further refined by a novel automatic optimization process that significantly speeds up the manual operation and yields similarly high accuracy. A core benefit of the new calibration method is its high runtime efficiency by directly mapping from raw depth sensor measurements into an application coordinate system and to the coordinates of its associated color sensor. As a result, the calibration method is an efficient solution in terms of precision and applicability in virtual reality and immersive telepresence applications. In addition to the core contributions, the results of two case studies which address 3D reconstruction and data streaming lead to the final conclusion of this thesis and to directions of future work in the rapidly advancing field of immersive telepresence research.},
  subject      = {Virtuelle Realit{\"a}t},
  language  = {en}
}
@phdthesis{Weitze,
  author    = {Weitze, Laura Katharina},
  title     = {Erweiterte Prozessbewertung von Biogasanlagen unter Ber{\"u}cksichtigung organoleptischer Parameter und Erfahrungswissen},
  doi       = {10.25643/bauhaus-universitaet.3849},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190129-38499},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {308},
  abstract  = {Landwirtschaftliche Biogasanlagen leisten mit ca. 9.300 Anlagen und einem Anteil von 5,3\% an der Stromerzeugung, einen Beitrag zur Erzeugung Erneuer-barer Energien in Deutschland. Die Optimierung dieser Anlagen f{\"o}rdert die nachhaltige Bereitstellung von Strom, W{\"a}rme und BioErdgas. Das Ergebnis dieser Forschungsarbeit ist die Entwicklung eines mehrmethodi-schen Bewertungsansatzes zur Beschreibung der Qualit{\"a}t der Eingangs-substrate als Teil einer ganzheitlichen Prozessoptimierung. Dies gelingt durch die kombinierte Nutzung klassischer Analyses{\"a}tze, der Nutzung organolepti-scher Parameter - der humansensorischen Sinnenpr{\"u}fung - und der Integration von prozess- und substratspezifischem Erfahrungswissen. Anhand von halbtechnischen Versuchen werden Korrelationen und Kausalit{\"a}ten zwi-schen chemisch-physikalischen, biologischen, organoleptischen und erfahrungsbezogenen Parametern erforscht. Die Entwicklung einer Fallbasis mit Hilfe des Fallbasierten Schließens, einer Form K{\"u}nstlicher Intelligenz, zeigt das Entwicklungs- und Integrationspotenzial der Automatisierung auf, insbesondere auch im Hinblick auf neue Ans{\"a}tze z.B. Industrie 4.0. Erste L{\"o}sungen zur Bew{\"a}ltigung der identifizierten Herausforderungen der mehrmethodischen Prozessbewertung werden vorgestellt. Abschließend wird ein Ausblick auf den weiteren Forschungsbedarf gegeben und die {\"U}bertragbarkeit des mehrmethodischen Bewertungsansatzes auf andere Anwendungsfelder z.B. Bioabfallbehandlung, Kl{\"a}ranlagen angeregt.},
  subject      = {Biogasanlage},
  language  = {de}
}
@article{OuaerHosseiniAmaretal.,
  author    = {Ouaer, Hocine and Hosseini, Amir Hossein and Amar, Menad Nait and Ben Seghier, Mohamed El Amine and Ghriga, Mohammed Abdelfetah and Nabipour, Narjes and Andersen, P{\aa}l {\O}steb{\o} and Mosavi, Amir and Shamshirband, Shahaboddin},
  title     = {Rigorous Connectionist Models to Predict Carbon Dioxide Solubility in Various Ionic Liquids},
  series = {Applied Sciences},
  volume    = {2020},
  journal   = {Applied Sciences},
  number    = {Volume 10, Issue 1, 304},
  publisher = {MDPI},
  doi       = {https://doi.org/10.3390/app10010304},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200107-40558},
  pages     = {18},
  abstract  = {Estimating the solubility of carbon dioxide in ionic liquids, using reliable models, is of paramount importance from both environmental and economic points of view. In this regard, the current research aims at evaluating the performance of two data-driven techniques, namely multilayer perceptron (MLP) and gene expression programming (GEP), for predicting the solubility of carbon dioxide (CO2) in ionic liquids (ILs) as the function of pressure, temperature, and four thermodynamical parameters of the ionic liquid. To develop the above techniques, 744 experimental data points derived from the literature including 13 ILs were used (80\% of the points for training and 20\% for validation). Two backpropagation-based methods, namely Levenberg-Marquardt (LM) and Bayesian Regularization (BR), were applied to optimize the MLP algorithm. Various statistical and graphical assessments were applied to check the credibility of the developed techniques. The results were then compared with those calculated using Peng-Robinson (PR) or Soave-Redlich-Kwong (SRK) equations of state (EoS). The highest coefficient of determination (R2 = 0.9965) and the lowest root mean square error (RMSE = 0.0116) were recorded for the MLP-LMA model on the full dataset (with a negligible difference to the MLP-BR model). The comparison of results from this model with the vastly applied thermodynamic equation of state models revealed slightly better performance, but the EoS approaches also performed well with R2 from 0.984 up to 0.996. Lastly, the newly established correlation based on the GEP model exhibited very satisfactory results with overall values of R2 = 0.9896 and RMSE = 0.0201.},
  subject      = {Maschinelles Lernen},
  language  = {en}
}