@phdthesis{Zhu,
  author    = {Zhu, Pengtao},
  title     = {The Variability of the Void Ratio of Sand and its Effect on Settlement and Infinite Slope Stability},
  doi       = {10.25643/bauhaus-universitaet.3741},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180403-37411},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {164},
  abstract  = {The uncertainty of a soil property can significantly affect the physical behavior of soil, so as to influence geotechnical practice. The uncertainty can be expressed by its stochastic parameters, including the mean, the standard deviation, and the spatial correlation length. These stochastic parameters are regarded as constant value in most of the former studies. The main aim of this thesis is to prove whether they are depth-dependent, and to evaluate the effect of this depth-dependent character on both the settlement and the infinite slope stability during rainwater infiltration. A stochastic one-dimensional settlement simulation is carried out using random finite element method with the von Wolffersdorff hypoplastic model, so as to evaluate the effect of stress level on the stochastic parameters of void ratio related parameters of sand. It is found that these stochastic parameters are both stress-dependent and depth-dependent. The non-stationary random field, considering the depth-dependent character of these stochastic parameters, can be generated through the distortion of the stationary random field. The one-dimensional settlement analysis is carried out to evaluation the effect of the depth-dependent character of the stochastic parameters of void ratio on the strain. It is found that the depth-dependent character has low effect on the strain. The deterministic analysis of infinite slope stability during rainwater infiltration is simulated. The transient seepage is carried out using finite difference method, while the steady state seepage is simulated using the analytical solution. The saturated hydraulic conductivity (ks) is taken as the only variable. The results show that the depth-dependent ks has a significant influence on the stability of the slope when the negative flux is high. Without considering the depth-dependent character, can overestimate the factor of safety of the slope. A slope can fail if the depth-dependent character is considered, while it is stable if the depth-dependent character is neglected. The failure time of the slope with a greater depth-dependent ks is earlier during transient infiltration. Meanwhile, the stochastic infinite slope stability analysis during infiltration, is also carried out to highlight the effect of the depth-dependent character of the stochastic parameters of ks. The results show that: the probability of failure is significantly increased if the depth-dependent character of mean is considered, while, it is moderately reduced if the depth-dependent character of the standard deviation is accounted. If the depth-dependent character of both the mean and standard deviation of ks is considered, the depth-dependent mean value plays a dominant influence on the results. Furthermore, the depth-dependent character of the spatial correlation length can slightly reduce the probability of failure.},
  subject      = {Bodenunruhe},
  language  = {en}
}
@article{Wolf,
  author    = {Wolf, Christiane},
  title     = {Transportschein f{\"u}r eine Bronzefigur - Empfangsstation Weimar. Ein Versuch zu "Eva geh{\"o}rt zu uns"},
  doi       = {10.25643/bauhaus-universitaet.4206},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200727-42061},
  pages     = {6},
  abstract  = {Vortrag {\"u}ber die Restaurierung der Bronzeplastik zur feierlichen Wiederaufstellung der von Auguste Rodin gestalteten Plastik "Eva" auf ihren angestammten Platz im Foyer des Hauptgeb{\"a}udes der Bauhaus-Universit{\"a}t Weimar am 12. Dezember 2018},
  subject      = {Plasik},
  language  = {de}
}
@article{WernerHaaseRenneretal.,
  author    = {Werner, Franziska and Haase, Annegret and Renner, Nona and Rink, Dieter and Rottwinkel, Malena and Schmidt, Anika},
  title     = {The Local Governance of Arrival in Leipzig: Housing of Asylum-Seeking Persons as a Contested Field},
  series = {Urban Planning},
  journal   = {Urban Planning},
  number    = {Volume 3, Issue 4},
  editor    = {Eckardt, Frank},
  publisher = {Cogitatio Press},
  doi       = {10.17645/up.v3i4.1708},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190122-38460},
  pages     = {116 -- 128},
  abstract  = {The article examines how the German city of Leipzig governs the housing of asylum seekers. Leipzig was a frontrunner in organizing the decentralized accommodation of asylum seekers when adopting its accommodation concept in 2012. This concept aimed at integrating asylum-seeking persons in the regular housing market at an early stage of arrival. However, since then, the city of Leipzig faces more and more challenges in implementing the concept. This is particularly due to the increasingly tight situation on the housing market while the number of people seeking protection increased and partly due to discriminating and xenophobic attitudes on the side of house owners and managers. Therefore, we argue that the so-called refugee crisis of 2015-2016 has to be seen in close interaction with a growing general housing shortage in Leipzig like in many other large European cities. Furthermore, we understand the municipal governing of housing as a contested field regarding its entanglement of diverse federal levels and policy scales, the diversity of stakeholders involved, and its dynamic change over the last years. We analyze this contested field set against the current context of arrival and dynamic urban growth on a local level. Based on empirical qualitative research that was conducted by us in 2016, Leipzig's local specifics will be investigated under the umbrella of our conceptual framework of Governance of Arrival. The issues of a strained housing market and the integration of asylum seekers in it do not apply only to Leipzig, but shed light on similar developments in other European Cities.},
  subject      = {Stadtplanung},
  language  = {en}
}
@phdthesis{Wang,
  author    = {Wang, Cuixia},
  title     = {Nanomechanical Resonators Based on Quasi-two-dimensional Materials},
  doi       = {10.25643/bauhaus-universitaet.3760},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180709-37609},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {Advances in nanotechnology lead to the development of nano-electro-mechanical systems (NEMS) such as nanomechanical resonators with ultra-high resonant frequencies. The ultra-high-frequency resonators have recently received significant attention for wide-ranging applications such as molecular separation, molecular transportation, ultra-high sensitive sensing, high-frequency signal processing, and biological imaging. It is well known that for micrometer length scale, first-principles technique, the most accurate approach, poses serious limitations for comparisons with experimental studies. For such larger size, classical molecular dynamics (MD) simulations are desirable, which require interatomic potentials. Additionally, a mesoscale method such as the coarse-grained (CG) method is another useful method to support simulations for even larger system sizes. Furthermore, quasi-two-dimensional (Q2D) materials have attracted intensive research interest due to their many novel properties over the past decades. However, the energy dissipation mechanisms of nanomechanical resonators based on several Q2D materials are still unknown. In this work, the addressed main issues include the development of the CG models for molybdenum disulphide (MoS2), investigation of the mechanism effects on black phosphorus (BP) nanoresonators and the application of graphene nanoresonators. The primary coverage and results of the dissertation are as follows: Method development. Firstly, a two-dimensional (2D) CG model for single layer MoS2 (SLMoS2) is analytically developed. The Stillinger-Weber (SW) potential for this 2D CG model is further parametrized, in which all SW geometrical parameters are determined analytically according to the equilibrium condition for each individual potential term, while the SW energy parameters are derived analytically based on the valence force field model. Next, the 2D CG model is further simplified to one-dimensional (1D) CG model, which describes the 2D SLMoS2 structure using a 1D chain model. This 1D CG model is applied to investigate the relaxed configuration and the resonant oscillation of the folded SLMoS2. Owning to the simplicity nature of the 1D CG model, the relaxed configuration of the folded SLMoS2 is determined analytically, and the resonant oscillation frequency is derived analytically. Considering the increasing interest in studying the properties of other 2D layered materials, and in particular those in the semiconducting transition metal dichalcogenide class like MoS2, the CG models proposed in current work provide valuable simulation approaches. Mechanism understanding. Two energy dissipation mechanisms of BP nanoresonators are focused exclusively, i.e. mechanical strain effects and defect effects (including vacancy and oxidation). Vacancy defect is intrinsic damping factor for the quality (Q)-factor, while mechanical strain and oxidation are extrinsic damping factors. Intrinsic dissipation (induced by thermal vibrations) in BP resonators (BPRs) is firstly investigated. Specifically, classical MD simulations are performed to examine the temperature dependence for the Q-factor of the single layer BPR (SLBPR) along the armchair and zigzag directions, where two-step fitting procedure is used to extract the frequency and Q-factor from the kinetic energy time history. The Q-factors of BPRs are evaluated through comparison with those of graphene and MoS2 nanoresonators. Next, effects of mechanical strain, vacancy and oxidation on BP nanoresonators are investigated in turn. Considering the increasing interest in studying the properties of BP, and in particular the lack of theoretical study for the BPRs, the results in current work provide a useful reference. Application. A novel application for graphene nanoresonators, using them to self-assemble small nanostructures such as water chains, is proposed. All of the underlying physics enabling this phenomenon is elucidated. In particular, by drawing inspiration from macroscale self-assembly using the higher order resonant modes of Chladni plates, classical MD simulations are used to investigate the self-assembly of water molecules using graphene nanoresonators. An analytic formula for the critical resonant frequency based on the interaction between water molecules and graphene is provided. Furthermore, the properties of the water chains assembled by the graphene nanoresonators are studied.},
  subject      = {Nanomechanik},
  language  = {en}
}
@article{VoelkerAlsaad,
  author    = {V{\"o}lker, Conrad and Alsaad, Hayder},
  title     = {Simulating the human body's microclimate using automatic coupling of CFD and an advanced thermoregulation model},
  series = {Indoor Air},
  volume    = {2018},
  journal   = {Indoor Air},
  number    = {28, Heft 3},
  doi       = {10.25643/bauhaus-universitaet.3851},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190218-38517},
  pages     = {415 -- 425},
  abstract  = {This study aims to develop an approach to couple a computational fluid dynamics (CFD) solver to the University of California, Berkeley (UCB) thermal comfort model to accurately evaluate thermal comfort. The coupling was made using an iterative JavaScript to automatically transfer data for each individual segment of the human body back and forth between the CFD solver and the UCB model until reaching convergence defined by a stopping criterion. The location from which data are transferred to the UCB model was determined using a new approach based on the temperature difference between subsequent points on the temperature profile curve in the vicinity of the body surface. This approach was used because the microclimate surrounding the human body differs in thickness depending on the body segment and the surrounding environment. To accurately simulate the thermal environment, the numerical model was validated beforehand using experimental data collected in a climate chamber equipped with a thermal manikin. Furthermore, an example of the practical implementations of this coupling is reported in this paper through radiant floor cooling simulation cases, in which overall and local thermal sensation and comfort were investigated using the coupled UCB model.},
  subject      = {Numerische Str{\"o}mungssimulation},
  language  = {en}
}
@phdthesis{Vollmering,
  author    = {Vollmering, Max},
  title     = {Damage Localization of Mechanical Structures by Subspace Identification and Krein Space Based H-infinity Estimation},
  doi       = {10.25643/bauhaus-universitaet.3772},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180730-37728},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {205},
  abstract  = {This dissertation is devoted to the theoretical development and experimental laboratory verification of a new damage localization method: The state projection estimation error (SP2E). This method is based on the subspace identification of mechanical structures, Krein space based H-infinity estimation and oblique projections. To explain method SP2E, several theories are discussed and laboratory experiments have been conducted and analysed. A fundamental approach of structural dynamics is outlined first by explaining mechanical systems based on first principles. Following that, a fundamentally different approach, subspace identification, is comprehensively explained. While both theories, first principle and subspace identification based mechanical systems, may be seen as widespread methods, barely known and new techniques follow up. Therefore, the indefinite quadratic estimation theory is explained. Based on a Popov function approach, this leads to the Krein space based H-infinity theory. Subsequently, a new method for damage identification, namely SP2E, is proposed. Here, the introduction of a difference process, the analysis by its average process power and the application of oblique projections is discussed in depth. Finally, the new method is verified in laboratory experiments. Therefore, the identification of a laboratory structure at Leipzig University of Applied Sciences is elaborated. Then structural alterations are experimentally applied, which were localized by SP2E afterwards. In the end four experimental sensitivity studies are shown and discussed. For each measurement series the structural alteration was increased, which was successfully tracked by SP2E. The experimental results are plausible and in accordance with the developed theories. By repeating these experiments, the applicability of SP2E for damage localization is experimentally proven.},
  subject      = {Strukturmechanik},
  language  = {en}
}
@article{Vollmer,
  author    = {Vollmer, Lisa},
  title     = {Mieter_innenproteste von den 1960er bis in die 1980er Jahre in der BRD. Von der Klassenallianz zur Aufspaltung und Einhegung ins neoliberale Projekt},
  series = {sub\urban. zeitschrift f{\"u}r kritische stadtforschung},
  volume    = {2018},
  journal   = {sub\urban. zeitschrift f{\"u}r kritische stadtforschung},
  number    = {Band 6, Heft 2/3},
  doi       = {10.25643/bauhaus-universitaet.3829},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20181213-38290},
  pages     = {137 -- 148},
  abstract  = {Die sp{\"a}ten 1960er Jahre und vor allem die 1970er Jahre waren eine Hochphase der Mieter_innenproteste in der BRD. Dieser Beitrag verfolgt die These, dass die Krise der fordistischen Wohnraumversorgung in den 1960er Jahren, bzw. die von der Politik implementierten L{\"o}sungsstrategien dieser Krise, eine Klassenallianz in wohnungsbezogenen Protesten erm{\"o}glichte und, dass sich diese Klassenallianz im Laufe der 1970er und 1980er Jahre aufspaltete, was zur Einhegung des Protests in das entstehende neoliberale Projekt f{\"u}hrte. Im Folgenden beschreibe ich also zun{\"a}chst die Wohnungsfrage 1968 als Krise der fordistischen Wohnraumproduktion und damit die materielle Basis der Klassenallianz. Daran anschließend illustriere ich anhand von Protesten in den drei Bereichen Massenwohnungsbau, Sanierungsgebiete und Hausbesetzungen die Klassenallianz und vollziehe ich deren Aufspaltung nach. Und schließlich stelle ich die Frage, was heute aus dieser Geschichte gelernt werden kann.},
  subject      = {Soziale Bewegung},
  language  = {de}
}
@phdthesis{Vesper,
  author    = {Vesper, Andreas},
  title     = {Entwicklung eines Berechnungsverfahrens zur Ermittlung der Kapazit{\"a}t in lichtsignalgeregelten Zufahrten mit zus{\"a}tzlichen Aufstellstreifen bei gleichzeitiger Freigabezeit},
  doi       = {10.25643/bauhaus-universitaet.3789},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180925-37895},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {338},
  abstract  = {Im Rahmen der Dissertation ist ein analytisches Berechnungsverfahren zur Ermittlung der Kapazit{\"a}t in lichtsignalgeregelten Zufahrten mit zus{\"a}tzlichen Aufstellstreifen bei gleichzeitiger Freigabezeit entwickelt worden, dass sich durch folgende Eigenschaften auszeichnet: a) einfaches Berechnungsverfahren - Ansatz eines einfachen linearen Berechnungsansatzes, der auf den Grundzusammenh{\"a}ngen des Verkehrsablaufs in lichtsignalgeregelten Zufahrten aufbaut, b) breites Anwendungsgebiet - Berechnungsverfahren kann in Zufahrten mit bis zu zwei zus{\"a}tzlichen Aufstellstreifen angewendet werden, c) hohe Genauigkeit - Im Rahmen eines direkten Vergleichs konnte u. a. gezeigt werden, dass mit dem hergeleiteten analytischen Berechnungsverfahren genauere Kapazit{\"a}tswerte ermittelt werden k{\"o}nnen, als mit dem Berechnungsverfahren nach HBS 2015.},
  subject      = {Verkehrssignalanlage},
  language  = {de}
}
@unpublished{SteinerBourinetLahmer,
  author    = {Steiner, Maria and Bourinet, Jean-Marc and Lahmer, Tom},
  title     = {An adaptive sampling method for global sensitivity analysis based on least-squares support vector regression},
  doi       = {10.25643/BAUHAUS-UNIVERSITAET.3832},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20181218-38320},
  pages     = {1 -- 33},
  abstract  = {In the field of engineering, surrogate models are commonly used for approximating the behavior of a physical phenomenon in order to reduce the computational costs. Generally, a surrogate model is created based on a set of training data, where a typical method for the statistical design is the Latin hypercube sampling (LHS). Even though a space filling distribution of the training data is reached, the sampling process takes no information on the underlying behavior of the physical phenomenon into account and new data cannot be sampled in the same distribution if the approximation quality is not sufficient. Therefore, in this study we present a novel adaptive sampling method based on a specific surrogate model, the least-squares support vector regresson. The adaptive sampling method generates training data based on the uncertainty in local prognosis capabilities of the surrogate model - areas of higher uncertainty require more sample data. The approach offers a cost efficient calculation due to the properties of the least-squares support vector regression. The opportunities of the adaptive sampling method are proven in comparison with the LHS on different analytical examples. Furthermore, the adaptive sampling method is applied to the calculation of global sensitivity values according to Sobol, where it shows faster convergence than the LHS method. With the applications in this paper it is shown that the presented adaptive sampling method improves the estimation of global sensitivity values, hence reducing the overall computational costs visibly.},
  subject      = {Approximation},
  language  = {en}
}
@phdthesis{Skivko,
  author    = {Skivko, Maria},
  title     = {Fashion in the City and The City in Fashion: Urban Representation in Fashion Magazines},
  doi       = {10.25643/bauhaus-universitaet.3726},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180210-37262},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {This dissertation concerns the changing role of fashion in the context of modern cities. In approaching this process, the research investigates the media discourse based on representations of fashion by cities and of cities by fashion. Moreover, this research focuses on fashion understood as a multidimensional phenomenon that aims to provide an explanation of urban spaces through fashion terms, actions, and garments. Additionally, cities are considered from the cultural geography approach that highlights the cultural component of urban spaces expressed in social and cultural practices in physical reality. Following this idea, it is suggested here that fashion today not only participates in the urban life as its significant component but also creates city images and representations of urban lifestyle through the fashion paradigm. In other words, fashion redefines urban spaces; at the same time, urban spaces are interpreted as a stage for fashion processes. By integrating in social research the fields of urban studies and fashion studies, this dissertation offers the discussion considering the fashion phenomenon not only as an urban phenomenon of modern reality. On the one hand, such discussion concerns the re-conceptualization of urban phenomena by the fashion influence; on the other hand, it relates the re-contextualization of fashion in a city. The empirical focus is based on the media context of fashion magazines in which variety of possibilities to represent fashion and cities lead to promising interpretations and analysis. The idea of representation specifies the ways of constructing the notion of urban space as fashionable space and the notion of fashion as placed in the urban context.},
  subject      = {Stadtentwicklung},
  language  = {en}
}
@inproceedings{SirtlKraus,
  author    = {Sirtl, Christin and Kraus, Matthias},
  title     = {Bonding Quality of Joined Glass Components Exposed to UV and Fluidic Influences},
  publisher = {Ernst \& Sohn Verlag f{\"u}r Architektur und technische Wissenschaften GmbH \& Co. KG},
  address   = {Berlin},
  isbn      = {978-3-433-03269-5},
  doi       = {10.25643/bauhaus-universitaet.3914},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190514-39144},
  pages     = {10},
  abstract  = {Components of structural glazing have to meet different requirements and resist various impacts, depending on the field of application. Within an international research project of the EU innovation program Horizon 2020, special glass panes with a fluid circulating in capillaries are developed exploiting solar energy. Major influences to this glazing are UV irradiation and the fluidic contact, effecting the mechanical and optical durability of the bonding material within the glass setup. Regarding to visual requirements, acrylate adhesives and EVA films are analyzed as possible bonding materials by destructive and non-destructive testing methods. Two types of specimen are presented for obtaining the mechanical behavior and the surface appearances of the bonding material.},
  subject      = {Alterung},
  language  = {en}
}
@article{SirtlHadlichKrausetal.,
  author    = {Sirtl, Christin and Hadlich, Christiane and Kraus, Matthias and Osburg, Andrea},
  title     = {Determination of Bonding Failures in Transparent Materials with Non-Destructive Methods - Evaluation of Climatically Stressed Glued and Laminated Glass Compounds},
  series = {World Journal of Engineering and Technology},
  volume    = {2018},
  journal   = {World Journal of Engineering and Technology},
  number    = {Vol. 6, No 2},
  doi       = {10.4236/wjet.2018.62020},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180606-37526},
  pages     = {315 -- 331},
  abstract  = {As part of an international research project - funded by the European Union - capillary glasses for facades are being developed exploiting storage energy by means of fluids flowing through the capillaries. To meet highest visual demands, acrylate adhesives and EVA films are tested as possible bonding materials for the glass setup. Especially non-destructive methods (visual analysis, analysis of birefringent properties and computed tomographic data) are applied to evaluate failure patterns as well as the long-term behavior considering climatic influences. The experimental investigations are presented after different loading periods, providing information of failure developments. In addition, detailed information and scientific findings on the application of computed tomographic analyses are presented.},
  subject      = {Klebtechnik},
  language  = {en}
}
@phdthesis{Shakir,
  author    = {Shakir, Masooma Mohib},
  title     = {Reconstructing the Sufi Shrine as a Living Heritage: Case of the Shrine of Shah Abdul Latif Bhitai, Sindh, Pakistan},
  doi       = {10.25643/bauhaus-universitaet.3770},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180719-37708},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  abstract  = {Living heritage sites are strongly connected to their historical, geographical, socio-political and cultural context. A descriptive narrative of the evolutionary process of the living heritage site of a Sufi shrine is undertaken in this research. It focuses on the changing relationship between the spatial and socio-cultural aspects over time. The larger or macro regional context is interrelated to the micro architectural context. The tangible heritage is defined by and intimately tied to the intangible aspects of the heritage. It is these constituting macro and micro elements and their interrelationships particularly through space and architecture that the research thesis explores in its documentation and analysis. The Sufi shrine in the South Asian Pakistani context is representative of a larger culture in the precolonial era. It is an expression of an indigenous modernity, belonging to a certain time period, place and community. The Sufi shrine as a building type has evolved from the precolonial time period, particularly starting at the golden ages of the Muslim Empire in the world (9th - 12th century), through the colonial age when western modernity arrived until the current neoliberal paradigm within the post independence period. Continued and evolved use of space, ritualistic performances, multiple social groups using the site are various elements whose documentation and analysis can establish the essential co-relations that contribute to continuity of its historical living. Physical and social relation of the historic site to its immediate settlement context is also a significant element that preserves the socio-cultural context. The chosen case of the Shrine of Shah Abdul Latif Bhitai, situated in the small town of Bhitshah in the province of Sindh, Pakistan forms a unique example where the particular physical and socio-cultural environment forms the context within which the Sufi heritage lives and survives. It is well integrated within its context at multiple levels. What are these levels and how do the constituting elements integrate is a major subject of research? These form the background to defining some of the basic issues and questions addressed in this doctoral thesis. Given that living heritage sites are unique due to their particular association to the context, the case study method was used to gain deeper insight and understanding on the topic.},
  subject      = {Kulturerbe},
  language  = {en}
}
@phdthesis{Schollmeyer,
  author    = {Schollmeyer, Andre},
  title     = {Efficient and High-Quality Rendering of Higher-Order Geometric Data Representations},
  doi       = {10.25643/bauhaus-universitaet.3823},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20181120-38234},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {143},
  abstract  = {Computer-Aided Design (CAD) bezeichnet den Entwurf industrieller Produkte mit Hilfe von virtuellen 3D Modellen. Ein CAD-Modell besteht aus parametrischen Kurven und Fl{\"a}chen, in den meisten F{\"a}llen non-uniform rational B-Splines (NURBS). Diese mathematische Beschreibung wird ebenfalls zur Analyse, Optimierung und Pr{\"a}sentation des Modells verwendet. In jeder dieser Entwicklungsphasen wird eine unterschiedliche visuelle Darstellung ben{\"o}tigt, um den entsprechenden Nutzern ein geeignetes Feedback zu geben. Designer bevorzugen beispielsweise illustrative oder realistische Darstellungen, Ingenieure ben{\"o}tigen eine verst{\"a}ndliche Visualisierung der Simulationsergebnisse, w{\"a}hrend eine immersive 3D Darstellung bei einer Benutzbarkeitsanalyse oder der Designauswahl hilfreich sein kann. Die interaktive Darstellung von NURBS-Modellen und -Simulationsdaten ist jedoch aufgrund des hohen Rechenaufwandes und der eingeschr{\"a}nkten Hardwareunterst{\"u}tzung eine große Herausforderung. Diese Arbeit stellt vier neuartige Verfahren vor, welche sich mit der interaktiven Darstellung von NURBS-Modellen und Simulationensdaten befassen. Die vorgestellten Algorithmen nutzen neue F{\"a}higkeiten aktueller Grafikkarten aus, um den Stand der Technik bez{\"u}glich Qualit{\"a}t, Effizienz und Darstellungsgeschwindigkeit zu verbessern. Zwei dieser Verfahren befassen sich mit der direkten Darstellung der parametrischen Beschreibung ohne Approximationen oder zeitaufw{\"a}ndige Vorberechnungen. Die dabei vorgestellten Datenstrukturen und Algorithmen erm{\"o}glichen die effiziente Unterteilung, Klassifizierung, Tessellierung und Darstellung getrimmter NURBS-Fl{\"a}chen und einen interaktiven Ray-Casting-Algorithmus f{\"u}r die Isofl{\"a}chenvisualisierung von NURBSbasierten isogeometrischen Analysen. Die weiteren zwei Verfahren beschreiben zum einen das vielseitige Konzept der programmierbaren Transparenz f{\"u}r illustrative und verst{\"a}ndliche Visualisierungen tiefenkomplexer CAD-Modelle und zum anderen eine neue hybride Methode zur Reprojektion halbtransparenter und undurchsichtiger Bildinformation f{\"u}r die Beschleunigung der Erzeugung von stereoskopischen Bildpaaren. Die beiden letztgenannten Ans{\"a}tze basieren auf rasterisierter Geometrie und sind somit ebenfalls f{\"u}r normale Dreiecksmodelle anwendbar, wodurch die Arbeiten auch einen wichtigen Beitrag in den Bereichen der Computergrafik und der virtuellen Realit{\"a}t darstellen. Die Auswertung der Arbeit wurde mit großen, realen NURBS-Datens{\"a}tzen durchgef{\"u}hrt. Die Resultate zeigen, dass die direkte Darstellung auf Grundlage der parametrischen Beschreibung mit interaktiven Bildwiederholraten und in subpixelgenauer Qualit{\"a}t m{\"o}glich ist. Die Einf{\"u}hrung programmierbarer Transparenz erm{\"o}glicht zudem die Umsetzung kollaborativer 3D Interaktionstechniken f{\"u}r die Exploration der Modelle in virtuellenUmgebungen sowie illustrative und verst{\"a}ndliche Visualisierungen tiefenkomplexer CAD-Modelle. Die Erzeugung stereoskopischer Bildpaare f{\"u}r die interaktive Visualisierung auf 3D Displays konnte beschleunigt werden. Diese messbare Verbesserung wurde zudem im Rahmen einer Nutzerstudie als wahrnehmbar und vorteilhaft befunden.},
  subject      = {Rendering},
  language  = {en}
}
@phdthesis{Schirmer,
  author    = {Schirmer, Ulrike},
  title     = {Die Adsorption von Dispersionspartikeln und Schutzkolloiden an Oberfl{\"a}chen von Zementphasen und Phasen der Zusatzstoffe},
  doi       = {10.25643/bauhaus-universitaet.3738},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180327-37383},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {227},
  abstract  = {Ziel der Arbeit war das Adsorptionsverhalten ausgew{\"a}hlter schutzkolloidstabilisierter Polymerpartikel mit variierender chemischer Basis im zement{\"a}ren System zu beschreiben und basierend auf den gewonnenen Erkenntnissen das Konkurrenzverhalten beim Angebot unterschiedlicher mineralischer Oberfl{\"a}chen zu kl{\"a}ren. Sowohl die Destabilisierung der Polymerpartikel im alkalischen Milieu, welche eine Voraussetzung f{\"u}r derartige Adsorptionsprozesse ist, als auch die Ver{\"a}nderung von Oberfl{\"a}cheneigenschaften verschiedener mineralischer Partikel durch Hydratations- und Ionenadsorptionsprozesse, wurden u. a. mit Hilfe elektrokinetischer Experimente erfasst. Die spektralphotometrische Erstellung von Adsorptionsisothermen erm{\"o}glichte zudem die Ermittlung der jeweiligen adsorbierten Polymermenge zu verschiedenen Zeitpunkten der fr{\"u}hen Hydratation. Weiterhin wurde die Polymeradsorption an Partikeln ausgew{\"a}hlter Zusatzstoffe in Abh{\"a}ngigkeit von der Ionenst{\"a}rke der Fl{\"u}ssigphase beschrieben. Rasterelektronenmikroskopische Untersuchungen cryo-pr{\"a}parierter polymermodifizierter Zementleimproben erm{\"o}glichten es außerdem deren Mikrostruktur im suspensiven Zustand zu visualisieren. Diese Aufnahmen, ebenso wie die Ergebnisse grundlegender hydratationskinetischer Untersuchungen wurden in Wechselbeziehung zu den Ergebnissen der Adsorptionsuntersuchungen gebracht. Maßgelbliche intermolekulare und interpartikul{\"a}re Wechselwirkungen, infolge derer sich die Stabilit{\"a}tsverh{\"a}ltnisse im Zementleim {\"a}ndern und die Polymerpartikel adsorbieren sind im Wesentlichen die Desorption des Schutzkolloids von der Polymerpartikeloberfl{\"a}che, die Ionisation funktioneller Gruppen der Polymerpartikel und der Schutzkolloidmakromolek{\"u}le im alkalischen Milieu und infolgedessen die Komplexbildung mit Ionen der Zementleimporenl{\"o}sung. Die Auswirkungen dieser Vorg{\"a}nge auf die L{\"o}sungs- und F{\"a}llungskinetik des Zementleimes wurden erfasst und mit der chemischen Zusammensetzung der polymeren Systeme korreliert.},
  subject      = {Kunststoffm{\"o}rtel},
  language  = {de}
}
@unpublished{RezakazemiMosaviShirazian,
  author    = {Rezakazemi, Mashallah and Mosavi, Amir and Shirazian, Saeed},
  title     = {ANFIS pattern for molecular membranes separation optimization},
  volume    = {2018},
  doi       = {10.25643/BAUHAUS-UNIVERSITAET.3821},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20181122-38212},
  pages     = {1 -- 20},
  abstract  = {In this work, molecular separation of aqueous-organic was simulated by using combined soft computing-mechanistic approaches. The considered separation system was a microporous membrane contactor for separation of benzoic acid from water by contacting with an organic phase containing extractor molecules. Indeed, extractive separation is carried out using membrane technology where complex of solute-organic is formed at the interface. The main focus was to develop a simulation methodology for prediction of concentration distribution of solute (benzoic acid) in the feed side of the membrane system, as the removal efficiency of the system is determined by concentration distribution of the solute in the feed channel. The pattern of Adaptive Neuro-Fuzzy Inference System (ANFIS) was optimized by finding the optimum membership function, learning percentage, and a number of rules. The ANFIS was trained using the extracted data from the CFD simulation of the membrane system. The comparisons between the predicted concentration distribution by ANFIS and CFD data revealed that the optimized ANFIS pattern can be used as a predictive tool for simulation of the process. The R2 of higher than 0.99 was obtained for the optimized ANFIS model. The main privilege of the developed methodology is its very low computational time for simulation of the system and can be used as a rigorous simulation tool for understanding and design of membrane-based systems. Highlights are, Molecular separation using microporous membranes. Developing hybrid model based on ANFIS-CFD for the separation process, Optimization of ANFIS structure for prediction of separation process},
  subject      = {Fluid},
  language  = {en}
}
@misc{Piethe,
  type      = {Master Thesis},
  author    = {Piethe, Vivienne},
  title     = {Konfektionierung eines Calciumsulfat-Bindemittelsystems zur Herstellung volumenstabiler Fließestrichm{\"o}rtel},
  doi       = {10.25643/bauhaus-universitaet.3944},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20190902-39445},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {107},
  abstract  = {Bei einem markt{\"u}blichen Calciumsulfat-Fließestrich wurden in der Praxis sch{\"a}digende Volu-menexpansionen festgestellt. Diese sind ein Resultat aus dem Zusammenwirken des einge-setzten Bindemittel-Compounds und einer kritischen Gesteinsk{\"o}rnung. Das Ziel dieser Arbeit ist es, ein Calciumsulfat-Bindemittelsystem zu konfektionieren, welches in der Lage ist, die im M{\"o}rtel festgestellten Volumenexpansionen zu unterbinden. Es sollen verschiedene Bindemittel- und Additivzusammensetzungen untersucht werden, welche in Verbindung mit der kritischen Gesteinsk{\"o}rnung die Herstellung eines volumenstabilen Fließestrichs erm{\"o}glichen. Dazu soll folgende Fragestellung beantwortet werden: Welche Ursachen hat die Volumenzunahme und wie ist diese zu minimieren bzw. unterbinden? Dabei werden unterschiedliche Bindemittelrezepturen aus α-Halbhydrat, Thermoanhydrit und Naturanhydrit, sowie verschiedene Additivzusammensetzungen hergestellt und untersucht. Durch L{\"a}ngen{\"a}nderungsmessungen in der Schwindrinne werden die Einfl{\"u}sse der Binde-mittel, der Additivzusammensetzungen und der Wasser/Bindemittel-Werte auf das L{\"a}n-gen{\"a}nderungsverhalten untersucht. Mittels Variation der einzelnen Compound-Bestandteile kann festgestellt werden, dass der Stabilisierer die L{\"a}ngen{\"a}nderung negativ beeinflusst. Dieser bindet freies Wasser, welches f{\"u}r eine Reaktion zwischen Bindemittel und Gesteins-k{\"o}rnung im plastischen Zustand nicht mehr zur Verf{\"u}gung steht. Diese Reaktion kann folglich erst im erh{\"a}rteten Zustand ablaufen und verursacht die sch{\"a}digende Volumenexpansion. Abschließend wurde ein Bindemittel-Compound konfektioniert, welcher ohne Zusatz von Stabilisierern in Zusammenhang mit der kritischen Gesteinsk{\"o}rnung volumenstabil ist und keine Sch{\"a}den ausl{\"o}st.},
  subject      = {Calciumsulfat},
  language  = {de}
}
@masterthesis{Nguyen,
  type      = {Bachelor Thesis},
  author    = {Nguyen, Thai Cuong},
  title     = {Fl{\"a}chen zweiter Ordnung - D{\"a}cher m{\"u}ssen nicht eben sein},
  doi       = {10.25643/bauhaus-universitaet.3749},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20181024-37496},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {47},
  abstract  = {In dieser Arbeit geht es um die Quadriken in der Ebene und im Raum. Dabei werden die Transformation in die Normalform und die Klassifikation untersucht. Aus den geometrischen Eigenschaften werden einige Anwendungsbeispiele der Quadriken in der Technik und dem allt{\"a}glichen Leben vorgestellt.},
  subject      = {Quadrik},
  language  = {de}
}
@misc{NawazKhan,
  author    = {Nawaz Khan, Shah},
  title     = {Numerical analysis of deformation and stability in the formation for railway tracks},
  doi       = {10.25643/bauhaus-universitaet.3786},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20180907-37867},
  abstract  = {Over the past few decades, the increasing demands of railways operations in the form of heavy loading and high speed have been noticed. Railway formation and ballast deform progressive under heavy axle cyclic loading, therefore the rail track needs proper design of ballast and formation bed to achieve the desire stiffness and stability for the safe and sound serviceability of the track. For the overall stability of the track on soft formation, the ground is improved by different techniques prior to the construction on that, in order to avoid the failure and differential settlement during the designed trains operation. The numerical analyses illustrate that the total deformation and bearing capacity of the railway tracks mostly depend on the changes in the friction angle and cohesion of the selected soils of the subgrade. To avoid failure in the formation of track under the design loads, the proper selection of types of soils, its layer thickness, well compaction during construction and provision of proper track drainage system are extremely important. For the construction of new railway tracks the soils having greater values of friction angle, cohesion and elastic stiffness with the well graded ballast cushion under the sleepers of designed side slopes can be used to reduce the maintenance cost, considerably increase the life time of the components of the tracks and ultimately give better performance of the tracks.},
  subject      = {Eisenbahnstrecke},
  language  = {en}
}
@inproceedings{MuellerLudwig,
  author    = {Mueller, Matthias and Ludwig, Horst-Michael},
  title     = {Neue Modelle f{\"u}r den Frost-Tausalz-Angriff auf Beton},
  series = {Tagungsbericht, 20. Ibausil - 20. Internationale Baustofftagung, 12. - 14. September 2018, Weimar, Teil 1},
  booktitle = {Tagungsbericht, 20. Ibausil - 20. Internationale Baustofftagung, 12. - 14. September 2018, Weimar, Teil 1},
  editor    = {Ludwig, Horst-Michael},
  organization    = {F.A.Finger-Institut f{\"u}r Baustoffkunde, Bauhaus-Universit{\"a}t Weimar},
  isbn      = {978-3-00-059950-7 (Bauhaus-Universit{\"a}tsverlag Weimar)},
  doi       = {10.25643/bauhaus-universitaet.4869},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20240507-48691},
  pages     = {1502-1509},
  abstract  = {F{\"u}r den Frost-Tausalz-Angriff auf Beton existiert eine Reihe von Schadenstheorien. Drei aktuelle Theorien nehmen f{\"u}r sich in Anspruch, den Schadensmechanismus und insbesondere den Einfluss niedrig konzentrierter Tausalzl{\"o}sungen auf den Sch{\"a}digungsgrad gut abbilden zu k{\"o}nnen. Die Glue Spall-Theorie sowie die Cryogenic Suction-Theorie bieten plausible Ans{\"a}tze. In Untersuchungen konnten einige Modellvorstellungen best{\"a}tigt werden, insbesondere der Prozess des kryogenen Saugens. Ob dieser Vorgang oder die mechanische Glue Spall-Belastung tats{\"a}chlich schadensausl{\"o}send sind, kann anhand der Untersuchungen jedoch noch nicht zweifelsfrei best{\"a}tigt oder ausgeschlossen werden. Die Brine Rejection-Theorie zeigt wichtige Prozesse auf, die f{\"u}r die Sch{\"a}digung bei einem Frost-Tausalz-Angriff relevant sein k{\"o}nnen. Als alleinstehendes Modell ist es eher nicht geeignet.},
  subject      = {Beton},
  language  = {de}
}