@phdthesis{Kunert,
  author    = {Kunert, Andr{\´e}},
  title     = {3D Interaction Techniques in Multi-User Virtual Reality : towards scalable templates and implementation patterns for cooperative interfaces},
  doi       = {10.25643/bauhaus-universitaet.4296},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20201204-42962},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {147},
  abstract  = {Multi-user projection systems provide a coherent 3D interaction space for multiple co-located users that facilitates mutual awareness, full-body interaction, and the coordination of activities. The users perceive the shared scene from their respective viewpoints and can directly interact with the 3D content. This thesis reports on novel interaction patterns for collaborative 3D interaction for local and distributed user groups based on such multi-user projection environments. A particular focus of our developments lies in the provision of multiple independent interaction territories in our workspaces and their tight integration into collaborative workflows. The motivation for such multi-focus workspaces is grounded in research on social cooperation patterns, specifically in the requirement for supporting phases of loose and tight collaboration and the emergence of dedicated orking territories for private usage and public exchange. We realized independent interaction territories in the form of handheld virtual viewing windows and multiple co-located hardware displays in a joint workspace. They provide independent views of a shared virtual environment and serve as access points for the exploration and manipulation of the 3D content. Their tight integration into our workspace supports fluent transitions between individual work and joint user engagement. The different affordances of various displays in an exemplary workspace consisting of a large 3D wall, a 3D tabletop, and handheld virtual viewing windows, promote different usage scenarios, for instance for views from an egocentric perspective, miniature scene representations, close-up views, or storage and transfer areas. This work shows that this versatile workspace can make the cooperation of multiple people in joint tasks more effective, e.g. by parallelizing activities, distributing subtasks, and providing mutual support. In order to create, manage, and share virtual viewing windows, this thesis presents the interaction technique of Photoportals, a tangible interface based on the metaphor of digital photography. They serve as configurable viewing territories and enable the individual examination of scene details as well as the immediate sharing of the prepared views. Photoportals are specifically designed to complement other interface facets and provide extended functionality for scene navigation, object manipulation, and for the creation of temporal recordings of activities in the virtual scene. A further objective of this work is the realization of a coherent interaction space for direct 3D input across the independent interaction territories in multi-display setups. This requires the simultaneous consideration of user input in several potential interaction windows as well as configurable disambiguation schemes for the implicit selection of distinct interaction contexts. We generalized the required implementation structures into a high-level software pattern and demonstrated its versatility by means of various multi-context 3D interaction tools. Additionally, this work tackles specific problems related to group navigation in multiuser projection systems. Joint navigation of a collocated group of users can lead to unintentional collisions when passing narrow scene sections. In this context, we suggest various solutions that prevent individual collisions during group navigation and discuss their effect on the perceived integrity of the travel group and the 3D scene. For collaboration scenarios involving distributed user groups, we furthermore explored different configurations for joint and individual travel. Last but not least, this thesis provides detailed information and implementation templates for the realization of the proposed interaction techniques and collaborative workspaces in scenegraph-based VR systems. These contributions to the abstraction of specific interaction patterns, such as group navigation and multi-window interaction, facilitate their reuse in other virtual reality systems and their adaptation to further collaborative scenarios.},
  subject      = {Virtuelle Realit{\"a}t},
  language  = {en}
}
@phdthesis{Winkel,
  author    = {Winkel, Benjamin},
  title     = {A three-dimensional model of skeletal muscle for physiological, pathological and experimental mechanical simulations},
  doi       = {10.25643/bauhaus-universitaet.4300},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20201211-43002},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {In recent decades, a multitude of concepts and models were developed to understand, assess and predict muscular mechanics in the context of physiological and pathological events. Most of these models are highly specialized and designed to selectively address fields in, e.g., medicine, sports science, forensics, product design or CGI; their data are often not transferable to other ranges of application. A single universal model, which covers the details of biochemical and neural processes, as well as the development of internal and external force and motion patterns and appearance could not be practical with regard to the diversity of the questions to be investigated and the task to find answers efficiently. With reasonable limitations though, a generalized approach is feasible. The objective of the work at hand was to develop a model for muscle simulation which covers the phenomenological aspects, and thus is universally applicable in domains where up until now specialized models were utilized. This includes investigations on active and passive motion, structural interaction of muscles within the body and with external elements, for example in crash scenarios, but also research topics like the verification of in vivo experiments and parameter identification. For this purpose, elements for the simulation of incompressible deformations were studied, adapted and implemented into the finite element code SLang. Various anisotropic, visco-elastic muscle models were developed or enhanced. The applicability was demonstrated on the base of several examples, and a general base for the implementation of further material models was developed and elaborated.},
  subject      = {Biomechanik},
  language  = {en}
}
@phdthesis{Oucif,
  author    = {Oucif, Chahmi},
  title     = {Analytical Modeling of Self-Healing and Super Healing in Cementitious Materials},
  doi       = {10.25643/bauhaus-universitaet.4229},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200831-42296},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {208},
  abstract  = {Self-healing materials have recently become more popular due to their capability to autonomously and autogenously repair the damage in cementitious materials. The concept of self-healing gives the damaged material the ability to recover its stiffness. This gives a difference in comparing with a material that is not subjected to healing. Once this material is damaged, it cannot sustain loading due to the stiffness degradation. Numerical modeling of self-healing materials is still in its infancy. Multiple experimental researches were conducted in literature to describe the behavior of self-healing of cementitious materials. However, few numerical investigations were undertaken. The thesis presents an analytical framework of self-healing and super healing materials based on continuum damage-healing mechanics. Through this framework, we aim to describe the recovery and strengthening of material stiffness and strength. A simple damage healing law is proposed and applied on concrete material. The proposed damage-healing law is based on a new time-dependent healing variable. The damage-healing model is applied on isotropic concrete material at the macroscale under tensile load. Both autonomous and autogenous self-healing mechanisms are simulated under different loading conditions. These two mechanisms are denoted in the present work by coupled and uncoupled self-healing mechanisms, respectively. We assume in the coupled self-healing that the healing occurs at the same time with damage evolution, while we assume in the uncoupled self-healing that the healing occurs when the material is deformed and subjected to a rest period (damage is constant). In order to describe both coupled and uncoupled healing mechanisms, a one-dimensional element is subjected to different types of loading history. In the same context, derivation of nonlinear self-healing theory is given, and comparison of linear and nonlinear damage-healing models is carried out using both coupled and uncoupled self-healing mechanisms. The nonlinear healing theory includes generalized nonlinear and quadratic healing models. The healing efficiency is studied by varying the values of the healing rest period and the parameter describing the material characteristics. In addition, theoretical formulation of different self-healing variables is presented for both isotropic and anisotropic maerials. The healing variables are defined based on the recovery in elastic modulus, shear modulus, Poisson's ratio, and bulk modulus. The evolution of the healing variable calculated based on cross-section as function of the healing variable calculated based on elastic stiffness is presented in both hypotheses of elastic strain equivalence and elastic energy equivalence. The components of the fourth-rank healing tensor are also obtained in the case of isotropic elasticity, plane stress and plane strain. Recent research revealed that self-healing presents a crucial solution also for the strengthening of the materials. This new concept has been termed ``Super Healing``. Once the stiffness of the material is recovered, further healing can result as a strengthening material. In the present thesis, new theory of super healing materials is defined in isotropic and anisotropic cases using sound mathematical and mechanical principles which are applied in linear and nonlinear super healing theories. Additionally, the link of the proposed theory with the theory of undamageable materials is outlined. In order to describe the super healing efficiency in linear and nonlinear theories, the ratio of effective stress to nominal stress is calculated as function of the super healing variable. In addition, the hypotheses of elastic strain and elastic energy equivalence are applied. In the same context, new super healing matrix in plane strain is proposed based on continuum damage-healing mechanics. In the present work, we also focus on numerical modeling of impact behavior of reinforced concrete slabs using the commercial finite element package Abaqus/Explicit. Plain and reinforced concrete slabs of unconfined compressive strength 41 MPa are simulated under impact of ogive-nosed hard projectile. The constitutive material modeling of the concrete and steel reinforcement bars is performed using the Johnson-Holmquist-2 damage and the Johnson-Cook plasticity material models, respectively. Damage diameters and residual velocities obtained by the numerical model are compared with the experimental results and effect of steel reinforcement and projectile diameter is studied.},
  subject      = {Schaden},
  language  = {en}
}
@phdthesis{Jentzsch,
  author    = {Jentzsch, Sina},
  title     = {Appell der Dinge. K{\"u}nstlerische Zuwendung zu den Dingen in den 1960er-Jahren},
  doi       = {10.25643/bauhaus-universitaet.4112},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200323-41129},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {261},
  abstract  = {Diese Dissertation besch{\"a}ftigt sich mit Kunstwerken, die das allt{\"a}gliche Ding in den Blick nehmen. N{\"a}hrboden dieser Kunstform sind die soziokulturellen Entwicklungen des 20. Jahrhunderts, mit denen wesentliche Ver{\"a}nderungen hinsichtlich des Verh{\"a}ltnisses von Mensch und Ding einhergingen. Daraus resultierte eine allgemeine k{\"u}nstlerische Zuwendung zu den Dingen und eine einzigartige Kulmination aus verschiedenartigen Auseinandersetzungen mit ihnen als kunstf{\"a}hige Gegenst{\"a}nde, {\"u}ber die sich die neue Dingwelt erschlossen wurde und deren Kunstwerke einen Spiegel dieser Entwicklungen darstellen. Die Dissertation stellt ebenfalls die Dinge selbst in den Fokus. Vier Aspekte von Dingen (Materialit{\"a}t, Funktionalit{\"a}t, Repr{\"a}sentationalit{\"a}t und Relationalit{\"a}t) werden gesondert ins Auge gefasst und in den theoretischen Diskurs des 20. Jahrhunderts eingeordnet, um sie als Teil der gelebten Realit{\"a}t besser zu verstehen, von der sich der {\"a}sthetische Blick nicht trennen l{\"a}sst. Anhand der k{\"u}nstlerischen Positionen von Robert Rauschenberg, Christo und Jeanne-Claude, Daniel Spoerri und Arman sowie Claes Oldenburg werden die verschiedenen Aspekte der Dinge n{\"a}her betrachtet und analysiert, wie diese speziell in den Kunstwerken thematisiert werden und welche Relevanz sie f{\"u}r deren Rezeptionserfahrung haben. Die Korrelation dieser beiden Ebenen - die Dinge als konstitutiver Bestandteil im sozialen Raum und die Dinge als Elemente in Kunstwerken -, die im Fokus der vorliegenden Untersuchung steht, erm{\"o}glicht es, die k{\"u}nstlerische Zuwendung zu den Dingen in den 1960er-Jahren neu einzuordnen. Dar{\"u}ber hinaus wird dadurch ein differenziertes Bild von der Kunst dieser Zeit sowie den Dingen in der Kunst im Allgemeinen gezeichnet.},
  subject      = {Ding},
  language  = {de}
}
@phdthesis{RadmardRahmani,
  author    = {Radmard Rahmani, Hamid},
  title     = {Artificial Intelligence Approach for Seismic Control of Structures},
  doi       = {10.25643/bauhaus-universitaet.4135},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200417-41359},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {Abstract In the first part of this research, the utilization of tuned mass dampers in the vibration control of tall buildings during earthquake excitations is studied. The main issues such as optimizing the parameters of the dampers and studying the effects of frequency content of the target earthquakes are addressed. Abstract The non-dominated sorting genetic algorithm method is improved by upgrading generic operators, and is utilized to develop a framework for determining the optimum placement and parameters of dampers in tall buildings. A case study is presented in which the optimal placement and properties of dampers are determined for a model of a tall building under different earthquake excitations through computer simulations. Abstract In the second part, a novel framework for the brain learning-based intelligent seismic control of smart structures is developed. In this approach, a deep neural network learns how to improve structural responses during earthquake excitations using feedback control. Abstract Reinforcement learning method is improved and utilized to develop a framework for training the deep neural network as an intelligent controller. The efficiency of the developed framework is examined through two case studies including a single-degree-of-freedom system and a high-rise building under different earthquake excitation records. Abstract The results show that the controller gradually develops an optimum control policy to reduce the vibrations of a structure under an earthquake excitation through a cyclical process of actions and observations. Abstract It is shown that the controller efficiently improves the structural responses under new earthquake excitations for which it was not trained. Moreover, it is shown that the controller has a stable performance under uncertainties.},
  subject      = {Erdbeben},
  language  = {en}
}
@phdthesis{Mueller,
  author    = {M{\"u}ller, Jan Philip},
  title     = {Audiovision und Synchronisation. Sehen, H{\"o}ren und Gleichzeitigkeit in Anordnungen vom Observatorium {\"u}ber psychologische Experimente bis zum Tonfilm im 19. und 20. Jahrhundert},
  doi       = {10.25643/bauhaus-universitaet.4290},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20201123-42906},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {516},
  abstract  = {In dieser Untersuchung wird eine Geschichte von Problemen der Gleichzeitigkeit zwischen Sehen und H{\"o}ren, beziehungsweise der Synchronit{\"a}t von Bild und Ton, bis zur Entstehung des Tonfilms rekonstruiert. Dabei werden Linien gezogen zwischen diskursiven Konfigurationen und medialen Anordnungen, in denen das Verh{\"a}ltnis von Sehen und H{\"o}ren oder Bild und Ton als zeitliches erscheint - in denen Sehen und H{\"o}ren, Bild und Ton zwischen Mannigfaltigkeit und Einheit verschmelzen, auseinanderfallen, interagieren, redundant oder spezifisch werden, einander erg{\"a}nzen, dominieren, verfehlen verdr{\"a}ngen, aufspalten… Tonfilm ist in der Kinogeschichte eben nicht nur eine Erg{\"a}nzung. Vielmehr {\"a}hnelt er dem Auftritt eines Gespensts, das das Wissen und die Techniken der Trennung der Sinne schon l{\"a}nger, vielleicht schon immer begleitet hatte. Das Auftreten des Tonfilms ist auch {\"u}berhaupt fr{\"u}her Anlass eines weitreichenden Diskurses dar{\"u}ber, was Audiovision eigentlich sein k{\"o}nnte und sollte. Noch allgemeiner k{\"o}nnte auch davon gesprochen werden, dass Tonfilm eins der ersten großen Projekte der Konvergenz technischer Medien ist, die heute - besonders angesichts des Computers - als entscheidender Aspekt von Mediengeschichte erscheint. Die Linien der Probleme von Gleichzeitigkeit/Ungleichzeitigkeit an den Schnittstellen von Wissen, Technik und {\"A}sthetik werden insbesondere durch drei Felder hindurch nachgezeichnet: 1) Die Geschichte von Intermodalit{\"a}t in Bezug auf die Frage nach Gleichzeitigkeit und Ungleichzeitigkeit als Problem und Gegenstand von Wissenschaft seit dem 19. Jahrhundert, vornehmlich in zwei Gebieten: Als Fehlerquelle im astronomischen Observatorium bei der Messung, Feststellung und Vereinheitlichung von Raum und Zeit, die auf individuelle Abweichungen Intermodaler Wahrnehmung verweist und als Problem der „pers{\"o}nlichen Gleichung" weit {\"u}ber die Astronomie hinaus Karriere macht. Als heiße Zone wahrnehmungspsychologischer Experimente und ihrer Apparate seit der Mitte des 19. Jahrhunderts, die mit dem Konzept der „Komplikation" Fragen nach einer Synthese der Sinneswahrnehmungen und damit letztlich nach der Selbstgegenwart des Menschen stellt. 2) Eine Technikgeschichte des Problems auditive und visuelle Zeitmedien - wie Phonograph und Film - zu koppeln, zu synchronisieren. Darin eskalieren zwei zeitkritische Relationen: Einerseits zwischen diskreter, intermittierender Bewegung des Films und stetiger, kontinuierlicher Bewegung des Phonographen, andererseits in Bezug darauf, an welcher Stelle - wo und wann - audiovisuelle Gegenwart des Kinos ensteht; oder auch verfehlt wird. 3) Eine Geschichte von Filmtheorie und -{\"a}sthetik, in der sich mit der Durchsetzung des Tonfilms um 1930 die Frage stellt, was dieses neue Medium sei und was damit zu tun. Diese Verhandlungen spannen sich zwischen dem formulierten Ziel einer spezifischen Illusion oder Pr{\"a}senz von Tonfilm durch Synchronit{\"a}t auf der einen Seite und der sich aus dem Verdacht des Betrugs durch Synchronit{\"a}t ergebenden Forderung nach „Asynchronismus" als kritischer Methode auf der anderen Seite auf. Ausgehend von der These, dass im 19. Jahrhundert die Sinne aufgeteilt werden, dann wird in diesen Anordnungen an irgendeiner Stelle Heterogenes gleichzeitig passieren. An welcher Stelle? Und was bedeuten diese (Un-)Gleichzeitigkeiten? Was dabei - sehr allgemein gesprochen - auf dem Spiel steht, sind M{\"o}glichkeiten einer audiovisuell geteilten - getrennten oder gemeinsamen - Welt und Gegenwart.},
  subject      = {Tonfilm},
  language  = {de}
}
@phdthesis{Gretzki,
  author    = {Gretzki, Allan},
  title     = {BundeskunstHall of Fame - Realisierungsprozess eines Graffiti Ausstellungsprojekts im musealen Kontext},
  doi       = {10.25643/bauhaus-universitaet.4215},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200818-42158},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {228},
  abstract  = {Realisierungsprozess eines Graffiti Ausstellungsprojekts im musealen Kontext},
  subject      = {Graffito},
  language  = {de}
}
@phdthesis{Truemer,
  author    = {Tr{\"u}mer, Andr{\´e}},
  title     = {Calcinierte Tone als Puzzolane der Zukunft - Von den Rohstoffen bis zur Wirkung im Beton},
  isbn      = {978-3-00-065011-6},
  doi       = {10.25643/bauhaus-universitaet.4096},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200214-40968},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {222},
  abstract  = {Vor dem Hintergrund einer stetig wachsenden Nachfrage an Beton wie auch ambitionierter Reduktionsziele beim in der Zementproduktion anfallenden CO2 gelten calcinierte Tone als derzeit aussichtsreichste technische Neuerung im Bereich nachhaltiger Bindemittelkonzepte. Unter Ausnutzung ihrer Puzzolanit{\"a}t soll ein erheblicher Teil der Klinkerkomponente im Zement ersetzt werden, wobei der zu ihrer Aktivierung notwendige Energiebedarf vergleichsweise niedrig ist. Wesentliche Vorteile der Tone sind ihre weltweit nahezu unbegrenzte Verf{\"u}gbarkeit sowie der {\"a}ußerst geringe rohstoffbedingte CO2-Ausstoß w{\"a}hrend der Calcinierung. Schwierigkeiten auf dem Weg der Umsetzung bestehen allerdings in der Vielseitigkeit des Systems, welches durch eine hohe Variet{\"a}t der Rohtone und des daraus folgenden thermischen Verhaltens gekennzeichnet ist. Entsprechend schwierig ist die {\"U}bertragbarkeit von Erfahrungen mit bereits etablierten calcinierten Tonen wie dem Metakaolin, der sich durch hohe Reinheit, einen aufwendigen Aufbereitungsprozess und eine entsprechend hohe Reaktivit{\"a}t auszeichnet. Ziel der Arbeit ist es daher, den bereits erlangten Kenntnisstand auf andere, wirtschaftlich relevante Tone zu erweitern und deren Eignung f{\"u}r die Anwendung im Beton herauszuarbeiten. In einem mehrstufigen Arbeitsprogramm wurde untersucht, inwieweit großtechnisch nutzbare Tone aktivierbar sind und welche Eigenschaften sich daraus f{\"u}r Zement und Beton ergeben. Die dabei festgestellte Reihenfolge Kaolinit > Montmorillonit > Illit beschreibt sowohl die Reaktivit{\"a}t der Brennprodukte als auch umgekehrt die H{\"o}he der optimalen Calciniertemperatur. Auch wandelt sich der Charakter der entstandenen Metaphasen in dieser Abfolge von r{\"o}ntgenamorph und hochreaktiv zu glasig und reaktionstr{\"a}ge. Trotz dieser Einordnung konnte selbst mit dem Illit eine mit Steinkohlenflugasche vergleichbare Puzzolanit{\"a}t festgestellt werden. Dies best{\"a}tigte sich anschließend in Parameterversuchen, bei denen die Einfl{\"u}sse von Rohstoffqualit{\"a}t, Calcinierung, Aufbereitung und Zement hinsichtlich der Reaktivit{\"a}tsausbeute bewertet wurden. Die Bandbreite der erzielbaren Qualit{\"a}ten ist dabei immens und gipfelt nicht zuletzt in stark unterschiedlichen Wirkungen auf die Festbetoneigenschaften. Hier machte sich vor allem die f{\"u}r Puzzolane typische Porenverfeinerung bemerkbar, sodass viele von Transportvorg{\"a}ngen abh{\"a}ngige Schadmechanismen unterdr{\"u}ckt wurden. Andere Schadex-positionen wie der Frostangriff ließen sich durch Zusatzmaßnahmen wie dem Eintrag von Luftporen beherrschen. Zu bem{\"a}ngeln sind vor allem die schlechte Verarbeitbarkeit kaolinitischer Metatone wie auch die f{\"u}r Puzzolane stark ausgepr{\"a}gte Carbonatisierungsneigung. Wesentliches Ergebnis der Arbeit ist, dass auch Tone, die bisher als geringwertig bez{\"u}glich des Aktivierungspotentials galten, nutzbare puzzolanische Eigenschaften entwickeln k{\"o}nnen. So kann selbst ein stark verunreinigter Illit-Ton die Qualit{\"a}t von Flugasche erreichen. Mit stei-gendem Tonmineralgehalt sowie bei Pr{\"a}sens thermisch instabilerer Tonminerale wie Mont-morillonit und Kaolinit erweitert sich das Spektrum nutzbarer Puzzolanit{\"a}ten bis hin zur hochreaktiven Metakaolin-Qualit{\"a}t. Damit lassen sich gute bis sehr gute Betoneigenschaften erzielen, sodass die Leistungsf{\"a}higkeit etablierter Kompositmaterialien erreicht wird. Somit sind die Voraussetzungen f{\"u}r eine umfangreiche Nutzung der erheblichen Tonmengen im Zement und Beton gegeben. Entsprechend k{\"o}nnen Tone einen effektiven Beitrag zu einer gesteigerten Nachhaltigkeit in der Baustoffproduktion weltweit leisten.},
  subject      = {Beton},
  language  = {de}
}
@phdthesis{AbuBakar,
  author    = {Abu Bakar, Ilyani Akmar},
  title     = {Computational Analysis of Woven Fabric Composites: Single- and Multi-Objective Optimizations and Sensitivity Analysis in Meso-scale Structures},
  issn      = {1610-7381},
  doi       = {10.25643/bauhaus-universitaet.4176},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200605-41762},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {151},
  abstract  = {This study permits a reliability analysis to solve the mechanical behaviour issues existing in the current structural design of fabric structures. Purely predictive material models are highly desirable to facilitate an optimized design scheme and to significantly reduce time and cost at the design stage, such as experimental characterization. The present study examined the role of three major tasks; a) single-objective optimization, b) sensitivity analyses and c) multi-objective optimization on proposed weave structures for woven fabric composites. For single-objective optimization task, the first goal is to optimize the elastic properties of proposed complex weave structure under unit cells basis based on periodic boundary conditions. We predict the geometric characteristics towards skewness of woven fabric composites via Evolutionary Algorithm (EA) and a parametric study. We also demonstrate the effect of complex weave structures on the fray tendency in woven fabric composites via tightness evaluation. We utilize a procedure which does not require a numerical averaging process for evaluating the elastic properties of woven fabric composites. The fray tendency and skewness of woven fabrics depends upon the behaviour of the floats which is related to the factor of weave. Results of this study may suggest a broader view for further research into the effects of complex weave structures or may provide an alternative to the fray and skewness problems of current weave structure in woven fabric composites. A comprehensive study is developed on the complex weave structure model which adopts the dry woven fabric of the most potential pattern in singleobjective optimization incorporating the uncertainties parameters of woven fabric composites. The comprehensive study covers the regression-based and variance-based sensitivity analyses. The second task goal is to introduce the fabric uncertainties parameters and elaborate how they can be incorporated into finite element models on macroscopic material parameters such as elastic modulus and shear modulus of dry woven fabric subjected to uni-axial and biaxial deformations. Significant correlations in the study, would indicate the need for a thorough investigation of woven fabric composites under uncertainties parameters. The study describes here could serve as an alternative to identify effective material properties without prolonged time consumption and expensive experimental tests. The last part focuses on a hierarchical stochastic multi-scale optimization approach (fine-scale and coarse-scale optimizations) under geometrical uncertainties parameters for hybrid composites considering complex weave structure. The fine-scale optimization is to determine the best lamina pattern that maximizes its macroscopic elastic properties, conducted by EA under the following uncertain mesoscopic parameters: yarn spacing, yarn height, yarn width and misalignment of yarn angle. The coarse-scale optimization has been carried out to optimize the stacking sequences of symmetric hybrid laminated composite plate with uncertain mesoscopic parameters by employing the Ant Colony Algorithm (ACO). The objective functions of the coarse-scale optimization are to minimize the cost (C) and weight (W) of the hybrid laminated composite plate considering the fundamental frequency and the buckling load factor as the design constraints. Based on the uncertainty criteria of the design parameters, the appropriate variation required for the structural design standards can be evaluated using the reliability tool, and then an optimized design decision in consideration of cost can be subsequently determined.},
  subject      = {Verbundwerkstoff},
  language  = {en}
}
@phdthesis{Sung,
  author    = {Sung, Younkyoung},
  title     = {Cultural Tourism and Social Resilience: Discourse of Historic Cities in East Germany, the Case of Gotha and Eisenach},
  doi       = {10.25643/bauhaus-universitaet.4092},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200212-40920},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {This thesis explores how cultural heritage plays a role in the development of urban identity by engaging both actively and passively with memory, i.e. remembering and forgetting. I argue that architectural heritage is a medium where specific cultural and social decisions form its way of presentation, and it reflects the values and interests of the period. By the process of remembering and forgetting, the meanings between inhabitant and object in urban environment are practiced, and the meanings are created. To enable the research in narrative observation, cultural tourism management is chosen as the main research object, which reflects the alteration of interaction between the architectural heritage and urban identity. Identifying the role of heritage management, the definition of social resilience and the prospects of cultural heritage as a means of social resilience are addressed. Case region of the research is East Ger- many, thereby, the study examines the distinct approaches and objectives regarding heritage management under the different political systems along the German reunification process. The framework is based on various theoretical paradigms to investigate the broad research questions: 1) What is the role of historic urban quarters in the revitalisation of East German towns? 2) How was the transition processed by cultural heritage management? 3) How did policy affect residents' lives? The case study is applied to macro level (city level: Gotha and Eisenach) and micro level study (object level: specific heritage sites), to analyse the performance of selective remembering and making tourist destination through giving significance to specific heritage. By means of site observations, archival research, qualitative inter- views, photographs, and discourse analysis on printed tourism materials, the study demonstrates that certain sites and characteristics of the city enable creating and focusing messages, which aids the social resilience. Combining theory and empirical studies this thesis attempts to widen the academic discussion regarding the practice of remembering and forgetting driven by cultural heritage. The thesis argues for cultural heritage tourism as an element of social resilience and one that embraces the historic and cultural identity of the inhabitants.},
  subject      = {Stadtmarketing},
  language  = {en}
}