@incollection{Delius, author = {Delius, Peter}, title = {Knowledge to go : Apps als Informationsportale}, series = {Alles digital? : E-Books in Studium und Lehre}, booktitle = {Alles digital? : E-Books in Studium und Lehre}, publisher = {Verlag der Bauhaus-Universit{\"a}t}, address = {Weimar}, doi = {10.25643/bauhaus-universitaet.1600}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120404-16000}, pages = {114 -- 121}, abstract = {Beitrag w{\"a}hrend der Weimarer EDOC-Tage 2011}, subject = {Apps }, language = {de} } @phdthesis{Nerlich, author = {Nerlich, Luise}, title = {KLANG tektonik _ Entwurfsgrammatik in Architektur und Musik im Werk des Architekten und Komponisten Iannis Xenakis}, doi = {10.25643/bauhaus-universitaet.1668}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120607-16689}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {392}, abstract = {klang_tektonik Design by grammar in architecture and music Architectural design is a creative process. Its emergence requires a creative component and it cannot be systematized. But while teaching architecture, work with a method to design is an essential aspect. In addition to the intuitive methods of design, however, also exist grammars, which explicit rules postulated for form finding and can be taught as such. In consideration of formative architectural and musical design, parameters will be presented, to design a transformation of music into architecture. Two revolutionary works are created in the 1950s, the composition Metastaseis and the Philips Pavilion for the World Exhibition in Brussels by the architect and composer Iannis Xenakis. Based on these works, there will be presented the method, how to replace musical parameters in to architectural parameters. This process provides the basis for an accurate spatial transformation model, which is designed on the basis of mathematical functions and has a strong similarity in language between the shape of the composition Metastaseis and architecture of the pavilion.}, subject = {Architektur}, language = {de} } @phdthesis{Krause2011, author = {Krause, Haie-Jann}, title = {Kallmeyer und Facilides. Eine Architektengemeinschaft im Kontext ihrer Entwicklung von konservativen Gestaltungstendenzen zur Baukunst der Moderne.}, doi = {10.25643/bauhaus-universitaet.1514}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120114-15140}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2011}, abstract = {Die Vorstellung des Gesamtwerkes der halleschen Architekten Julius Kallmeyer und Wilhelm Facilides, die sich Anfang der 1920er Jahre zu einer Zusammenarbeit entschlossen und eine Vielzahl interessanter Geb{\"a}ude f{\"u}r die Saalestadt schufen, ist in der Fokussierung der Gesamtthematik der Lebens- und Werksdarstellung das Grundanliegen dieser Ausarbeitung. Dieses bisher nicht in Angriff genommene architekturgeschichtliche Anliegen besch{\"a}ftigt sich mit den Ergebnissen der B{\"u}rogeschichte einer- und der Lebensgeschichte der Pers{\"o}nlichkeiten andererseits. Bis heute gelten die klassisch modernen Architekturen Kallmeyers \& Facilides', gerade f{\"u}r den gehobenen Wohnhausbau in Halle an der Saale, als herausragende Leistungen.}, subject = {Kallmeyer}, language = {de} } @misc{Herrmann, type = {Master Thesis}, author = {Herrmann, Annemarie}, title = {Investigation of buckling behavior of carbon fiber-reinforced composite shell structures with openings}, doi = {10.25643/bauhaus-universitaet.1812}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20130107-18129}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {79}, abstract = {Thin-walled cylindrical composite shell structures are often applied in aerospace for lighter and cheaper launcher transport system. These structures exhibit sensitivity to geometrical imperfection and are prone to buckling under axial compression. Today the design is based on NASA guidelines from the 1960's [1] using a conservative lower bound curve embodying many experimental results of that time. It is well known that the advantages and different characteristics of composites as well as the evolution of manufacturing standards are not considered apporopriately in this outdated approach. The DESICOS project was initiated to provide new design guidelines regarding all the advantages of composites and allow further weight reduction of space structures by guaranteeing a more precise and robust design. Therefore it is necessary among other things to understand how a cutout with different dimensions affects the buckling load of a thin-walled cylindrical shell structure in combination with initial geometric imperfections. This work is intended to identify a ratio between the cutout characteristic dimension (in this case the cutout diameter) and the structure characteristic dimension (in this case the cylinder radius) that can be used to tell if the buckling structure is dominated by initial imperfections or is dominated by the cutout.}, subject = {buckling}, language = {en} } @inproceedings{OPUS4-2457, title = {International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, series = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, booktitle = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, editor = {G{\"u}rlebeck, Klaus and Lahmer, Tom and Werner, Frank}, organization = {Bauhaus-Universit{\"a}t Weimar}, issn = {1611-4086}, doi = {10.25643/bauhaus-universitaet.2457}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20150916-24571}, pages = {434}, abstract = {The 19th International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering will be held at the Bauhaus University Weimar from 4th till 6th July 2012. Architects, computer scientists, mathematicians, and engineers from all over the world will meet in Weimar for an interdisciplinary exchange of experiences, to report on their results in research, development and practice and to discuss. The conference covers a broad range of research areas: numerical analysis, function theoretic methods, partial differential equations, continuum mechanics, engineering applications, coupled problems, computer sciences, and related topics. Several plenary lectures in aforementioned areas will take place during the conference. We invite architects, engineers, designers, computer scientists, mathematicians, planners, project managers, and software developers from business, science and research to participate in the conference!}, subject = {Angewandte Informatik}, language = {en} } @inproceedings{DeAguinaga, author = {De Aguinaga, Jos{\´e} Guillermo}, title = {INFLUENCE OF DIFFERENT DATA TYPES FOR THE ESTIMATION OF HYDROMECHANICAL PARAMETERS FOR A WATER RETAINING DAM USING SYNTHETIC DATA}, series = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, booktitle = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, editor = {G{\"u}rlebeck, Klaus and Lahmer, Tom and Werner, Frank}, organization = {Bauhaus-Universit{\"a}t Weimar}, issn = {1611-4086}, doi = {10.25643/bauhaus-universitaet.2760}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170306-27607}, pages = {12}, abstract = {The present research analyses the error on prediction obtained under different data availability scenarios to determine which measurements contribute to an improvement of model prognosis and which not. A fully coupled 2D hydromechanical model of a water retaining dam is taken as an example. Here, the mean effective stress in the porous skeleton is reduced due to an increase in pore water pressure under drawdown conditions. Relevant model parameters are ranked by scaled sensitivities, Particle Swarm Optimization is applied to determine the optimal parameter values and model validation is performed to determine the magnitude of error forecast. We compare the predictions of the optimized models with results from a forward run of the reference model to obtain actual prediction errors. The analyses presented here were performed to 31 data sets of 100 observations of varying data types. Calibrating with multiple information types instead of only one sort, brings better calibration results and improvement in model prognosis. However, when using several types of information the number of observations have to be increased to be able to cover a representative part of the model domain; otherwise a compromise between data availability and domain coverage prove best. Which type of information for calibration contributes to the best prognoses, could not be determined in advance. For the error in model prognosis does not depends on the error in calibration, but on the parameter error, which unfortunately can not be determined in reality since we do not know its real value. Excellent calibration fits with parameters' values near the limits of reasonable physical values, provided the highest prognosis errors. While models which included excess pore pressure values for calibration provided the best prognosis, independent of the calibration fit.}, subject = {Angewandte Informatik}, language = {en} } @article{AreiasRabczukDiasdaCostaetal., author = {Areias, Pedro and Rabczuk, Timon and Dias-da-Costa, D. and Piresh, E.B.}, title = {Implicit solutions with consistent additive and multiplicative components}, series = {Finite Elements in Analysis and Design}, journal = {Finite Elements in Analysis and Design}, doi = {10.1016/j.finel.2012.03.007}, pages = {15 -- 31}, abstract = {This work describes an algorithm and corresponding software for incorporating general nonlinear multiple-point equality constraints in a implicit sparse direct solver. It is shown that direct addressing of sparse matrices is possible in general circumstances, circumventing the traditional linear or binary search for introducing (generalized) constituents to a sparse matrix. Nested and arbitrarily interconnected multiple-point constraints are introduced by processing of multiplicative constituents with a built-in topological ordering of the resulting directed graph. A classification of discretization methods is performed and some re-classified problems are described and solved under this proposed perspective. The dependence relations between solution methods, algorithms and constituents becomes apparent. Fracture algorithms can be naturally casted in this framework. Solutions based on control equations are also directly incorporated as equality constraints. We show that arbitrary constituents can be used as long as the resulting directed graph is acyclic. It is also shown that graph partitions and orderings should be performed in the innermost part of the algorithm, a fact with some peculiar consequences. The core of our implicit code is described, specifically new algorithms for direct access of sparse matrices (by means of the clique structure) and general constituent processing. It is demonstrated that the graph structure of the second derivatives of the equality constraints are cliques (or pseudo-elements) and are naturally included as such. A complete algorithm is presented which allows a complete automation of equality constraints, avoiding the need of pre-sorting. Verification applications in four distinct areas are shown: single and multiple rigid body dynamics, solution control and computational fracture.}, subject = {Angewandte Mathematik}, language = {en} } @phdthesis{Schrader, author = {Schrader, Kai}, title = {Hybrid 3D simulation methods for the damage analysis of multiphase composites}, doi = {10.25643/bauhaus-universitaet.2059}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20131021-20595}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {174}, abstract = {Modern digital material approaches for the visualization and simulation of heterogeneous materials allow to investigate the behavior of complex multiphase materials with their physical nonlinear material response at various scales. However, these computational techniques require extensive hardware resources with respect to computing power and main memory to solve numerically large-scale discretized models in 3D. Due to a very high number of degrees of freedom, which may rapidly be increased to the two-digit million range, the limited hardware ressources are to be utilized in a most efficient way to enable an execution of the numerical algorithms in minimal computation time. Hence, in the field of computational mechanics, various methods and algorithms can lead to an optimized runtime behavior of nonlinear simulation models, where several approaches are proposed and investigated in this thesis. Today, the numerical simulation of damage effects in heterogeneous materials is performed by the adaption of multiscale methods. A consistent modeling in the three-dimensional space with an appropriate discretization resolution on each scale (based on a hierarchical or concurrent multiscale model), however, still contains computational challenges in respect to the convergence behavior, the scale transition or the solver performance of the weak coupled problems. The computational efficiency and the distribution among available hardware resources (often based on a parallel hardware architecture) can significantly be improved. In the past years, high-performance computing (HPC) and graphics processing unit (GPU) based computation techniques were established for the investigationof scientific objectives. Their application results in the modification of existing and the development of new computational methods for the numerical implementation, which enables to take advantage of massively clustered computer hardware resources. In the field of numerical simulation in material science, e.g. within the investigation of damage effects in multiphase composites, the suitability of such models is often restricted by the number of degrees of freedom (d.o.f.s) in the three-dimensional spatial discretization. This proves to be difficult for the type of implementation method used for the nonlinear simulation procedure and, simultaneously has a great influence on memory demand and computational time. In this thesis, a hybrid discretization technique has been developed for the three-dimensional discretization of a three-phase material, which is respecting the numerical efficiency of nonlinear (damage) simulations of these materials. The increase of the computational efficiency is enabled by the improved scalability of the numerical algorithms. Consequently, substructuring methods for partitioning the hybrid mesh were implemented, tested and adapted to the HPC computing framework using several hundred CPU (central processing units) nodes for building the finite element assembly. A memory-efficient iterative and parallelized equation solver combined with a special preconditioning technique for solving the underlying equation system was modified and adapted to enable combined CPU and GPU based computations. Hence, it is recommended by the author to apply the substructuring method for hybrid meshes, which respects different material phases and their mechanical behavior and which enables to split the structure in elastic and inelastic parts. However, the consideration of the nonlinear material behavior, specified for the corresponding phase, is limited to the inelastic domains only, and by that causes a decreased computing time for the nonlinear procedure. Due to the high numerical effort for such simulations, an alternative approach for the nonlinear finite element analysis, based on the sequential linear analysis, was implemented in respect to scalable HPC. The incremental-iterative procedure in finite element analysis (FEA) during the nonlinear step was then replaced by a sequence of linear FE analysis when damage in critical regions occured, known in literature as saw-tooth approach. As a result, qualitative (smeared) crack initiation in 3D multiphase specimens has efficiently been simulated.}, subject = {high-performance computing}, language = {en} } @misc{Kuester, type = {Master Thesis}, author = {K{\"u}ster, Felix Pascal}, title = {Helsinki Central}, doi = {10.25643/bauhaus-universitaet.1686}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120807-16867}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {72}, abstract = {Als zentraler Ort und Eingangstor in die finnische Hauptstadt bietet der Bereich um den Bahnhof, in dem sich das Baufeld befindet zu wenig r{\"a}umliche Qualit{\"a}ten und bildet gleichzeitig eine Barriere zwischen dem historischen Stadtkern und dem politischen und kulturellem Zentrum der Stadt. Der historische Bahnhof aus der Epoche des Jugendstils ist momentan eingeschlossen von einer hochfrequentierten Straße im S{\"u}den und den flankierenden Stationen des Busbahnhofs an der Ost- und Westseite. Die fußl{\"a}ufigen Verbindungen in die Altstadt sind gest{\"o}rt und das Regierungsviertel mit dem Reichstagsgeb{\"a}ude werden links liegen gelassen. Eine Orientierung als Neuank{\"o}mmling ist schwer m{\"o}glich. Dar{\"u}ber hinaus kommt etwa die H{\"a}lfte der Z{\"u}ge, vor allem die Regionalz{\"u}ge nicht in der Bahnhofshalle des Kopfbahnhofes an, weil die Begrenzung durch die Seitenfl{\"u}gel nur eine Erweiterung des Bahnhofs nach Norden hin zuließ. Entstanden ist ein Entwurf der versucht, dem gesamten Bereich um den Bahnhof ein neues Gesicht zu geben und eine Verbesserung auf unterschiedlichen Ebenen zu erreichen. Er b{\"u}ndelt zum einen die verschiedenen Verkehrsstr{\"o}me und stellt eine bisher unterbrochene Querverbindung zwischen den benachbarten Stadtvierteln entlang des Bahnhofsareals her. Zum anderen tr{\"a}gt er dem Erfordernis nach einem st{\"a}dtebaulichen Gegen{\"u}ber f{\"u}r das Regierungsgeb{\"a}ude Rechnung, welches damit in den Verbund der kulturellen Einrichtungen auf dem T{\"o}{\"o}l{\"o}nlahti Gel{\"a}nde aufgenommen wird. Dar{\"u}ber hinaus belebt er eine Besonderheit von Helsinki. Zu Beginn des 20. Jahrhunderts bestand die Notwendigkeit den Hafen an das Schienennetz anzubinden. Da der Stadtkern bereits sehr dicht bebaut war, wurde ein Eisenbahnring entlang der K{\"u}ste, einmal um das Stadtzentrum herum gebaut. Seitdem die Verbindung stillgelegt wurde liegt dieser Ring brach, was nun die große Chance bietet, eine kreuzungsfreien Rad- und Fußweg zu etablieren, der durch den Entwurf eines Mobilityhubs geschlossen w{\"u}rde. In der vorliegenden Brosch{\"u}re werden die st{\"a}dtebaulichen Rahmenbedingungen, die Analyse der gegenw{\"a}rtigen Situation und der eigentliche Entwurfsprozess, der zu dieser L{\"o}sung f{\"u}hrte dokumentiert.}, subject = {Weimar / Bauhaus-Universit{\"a}t}, language = {de} } @phdthesis{UrbinaCazenave, author = {Urbina Cazenave, Mario Humberto}, title = {Gaze Controlled Applications and Optical-See-Through Displays - General Conditions for Gaze Driven Companion Technologies}, doi = {10.25643/bauhaus-universitaet.1749}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20121107-17492}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {106}, abstract = {Gaze based human-computer-interaction has been a research topic for over a quarter century. Since then, the main scenario for gaze interaction has been helping handicapped people to communicate an interact with their environment. With the rapid development of mobile and wearable display technologies, a new application field for gaze interaction has appeared, opening new research questions. This thesis investigates the feasibility of mobile gaze based interaction, studying deeply the use of pie menus as a generic and robust widget for gaze interaction as well as visual and perceptual issues on head mounted (wearable) optical see-through displays. It reviews conventional gaze-based selection methods and investigates in detail the use of pie menus for gaze control. It studies and discusses layout issues, selection methods and applications. Results show that pie menus can allocate up to six items in width and multiple depth layers, allowing a fast and accurate navigation through hierarchical levels by using or combining multiple selection methods. Based on these results, several text entry methods based on pie menus are proposed. Character-by-character text entry, text entry with bigrams and with text entry with bigrams derived by word prediction, as well as possible selection methods, are examined in a longitudinal study. Data showed large advantages of the bigram entry methods over single character text entry in speed and accuracy. Participants preferred the novel selection method based on saccades (selecting by borders) over the conventional and well established dwell time method. On the one hand, pie menus showed to be a feasible and robust widget, which may enable the efficient use of mobile eye tracking systems that may not be accurate enough for controlling elements on conventional interface. On the other hand, visual perception on mobile displays technologies need to be examined in order to deduce if the mentioned results can be transported to mobile devices. Optical see-through devices enable observers to see additional information embedded in real environments. There is already some evidence of increasing visual load on the respective systems. We investigated visual performance on participants with a visual search tasks and dual tasks presenting visual stimuli on the optical see-through device, only on a computer screen, and simultaneously on both devices. Results showed that switching between the presentation devices (i.e. perceiving information simultaneously from both devices) produced costs in visual performance. The implications of these costs and of further perceptual and technical factors for mobile gaze-based interaction are discussed and solutions are proposed.}, subject = {Eye tracking movement}, language = {en} } @misc{MuellerHennigAubeletal., author = {M{\"u}ller, Naira and Hennig, Christoph and Aubel, Mario and Hesse, Tobias and Schneider, Sascha}, title = {FlipLife als Mitarbeiterrekrutierungsquelle}, doi = {10.25643/bauhaus-universitaet.1572}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120229-15727}, pages = {101}, abstract = {Ausgehend von der Aufgabenstellung umreißt diese Arbeit die Besonderheiten der Mitarbeiterrekrutierung und deren Anwendung im Internet, im speziellen bei Social-Games, gemessen an dem Spiel FlipLife.}, subject = {Fliplife Mitarbeiterrekrutierung}, language = {de} } @article{ChenRabczukLiuetal., author = {Chen, Lei and Rabczuk, Timon and Liu, G.R. and Zeng, K.Y. and Kerfriden, Pierre and Bordas, St{\´e}phane Pierre Alain}, title = {Extended finite element method with edge-based strain smoothing (ESm-XFEM) for linear elastic crack growth}, series = {Computer Methods in Applied Mechanics and Engineering}, journal = {Computer Methods in Applied Mechanics and Engineering}, doi = {10.1016/j.cma.2011.08.013}, abstract = {This paper presents a strain smoothing procedure for the extended finite element method (XFEM). The resulting "edge-based" smoothed extended finite element method (ESm-XFEM) is tailored to linear elastic fracture mechanics and, in this context, to outperform the standard XFEM. In the XFEM, the displacement-based approximation is enriched by the Heaviside and asymptotic crack tip functions using the framework of partition of unity. This eliminates the need for the mesh alignment with the crack and re-meshing, as the crack evolves. Edge-based smoothing (ES) relies on a generalized smoothing operation over smoothing domains associated with edges of simplex meshes, and produces a softening effect leading to a close-to-exact stiffness, "super-convergence" and "ultra-accurate" solutions. The present method takes advantage of both the ES-FEM and the XFEM. Thanks to the use of strain smoothing, the subdivision of elements intersected by discontinuities and of integrating the (singular) derivatives of the approximation functions is suppressed via transforming interior integration into boundary integration. Numerical examples show that the proposed method improves significantly the accuracy of stress intensity factors and achieves a near optimal convergence rate in the energy norm even without geometrical enrichment or blending correction.}, subject = {Angewandte Mathematik}, language = {en} } @article{NguyenVinhBakarMsekhetal., author = {Nguyen-Vinh, H. and Bakar, I. and Msekh, Mohammed Abdulrazzak and Song, Jeong-Hoon and Muthu, Jacob and Zi, Goangseup and Le, P. and Bordas, St{\´e}phane Pierre Alain and Simpson, R. and Natarajan, S. and Lahmer, Tom and Rabczuk, Timon}, title = {Extended Finite Element Method for Dynamic Fracture of Piezo-Electric Materials}, series = {Engineering Fracture Mechanics}, journal = {Engineering Fracture Mechanics}, doi = {10.1016/j.engfracmech.2012.04.025}, pages = {19 -- 31}, abstract = {We present an extended finite element formulation for dynamic fracture of piezo-electric materials. The method is developed in the context of linear elastic fracture mechanics. It is applied to mode I and mixed mode-fracture for quasi-steady cracks. An implicit time integration scheme is exploited. The results are compared to results obtained with the boundary element method and show excellent agreement.}, subject = {Angewandte Mathematik}, language = {en} } @inproceedings{StutzWuttke, author = {Stutz, Henning and Wuttke, Frank}, title = {EVALUATION OF SOIL-STRUCTURE INTERACTION MODELS USING DIFFERENT MODEL-ROBUSTNESS APPROACHES}, series = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, booktitle = {Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 04 - 06 2012, Bauhaus-University Weimar}, editor = {G{\"u}rlebeck, Klaus and Lahmer, Tom and Werner, Frank}, organization = {Bauhaus-Universit{\"a}t Weimar}, issn = {1611-4086}, doi = {10.25643/bauhaus-universitaet.2787}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170314-27878}, pages = {15}, abstract = {The aim of this study is to show an application of model robustness measures for soilstructure interaction (henceforth written as SSI) models. Model robustness defines a measure for the ability of a model to provide useful model answers for input parameters which typically have a wide range in geotechnical engineering. The calculation of SSI is a major problem in geotechnical engineering. Several different models exist for the estimation of SSI. These can be separated into analytical, semi-analytical and numerical methods. This paper focuses on the numerical models of SSI specific macro-element type models and more advanced finite element method models using contact description as continuum or interface elements. A brief description of the models used is given in the paper. Following this description, the applied SSI problem is introduced. The observed event is a static loaded shallow foundation with an inclined load. The different partial models to consider the SSI effects are assessed using different robustness measures during numerical application. The paper shows the investigation of the capability to use these measures for the assessment of the model quality of SSI partial models. A variance based robustness and a mathematical robustness approaches are applied. These different robustness measures are used in a framework which allows also the investigation of computational time consuming models. Finally the result shows that the concept of using robustness approaches combined with other model-quality indicators (e.g. model sensitivity or model reliability) can lead to unique model-quality assessment for SSI models.}, subject = {Angewandte Informatik}, language = {en} } @masterthesis{Mueller, type = {Bachelor Thesis}, author = {M{\"u}ller, Naira}, title = {Erweiterung von Fliplife mit bauphysikalischen Inhalten}, doi = {10.25643/bauhaus-universitaet.1676}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120704-16763}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {105}, abstract = {In dieser Arbeit wurde ein Konzept erstellt, das Fliplife um einen bauphysikalischen Karriereweg erweitert. In das Spiel wurden beispielhaft bauphysikalische Inhalte sowie spielkonzept-kompatible und wissensvermittelnde Spielmechaniken implementiert.}, subject = {Social Game}, language = {de} } @article{Aguinaga, author = {Aguinaga, Jos{\´e} Guillermo De}, title = {Error in prediction due to data type availability in a coupled hydro-mechanical model}, series = {Electronic Journal of Geotechnical Engineering}, journal = {Electronic Journal of Geotechnical Engineering}, doi = {10.25643/bauhaus-universitaet.3117}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170413-31170}, pages = {2459 -- 2471}, abstract = {Different types of data provide different type of information. The present research analyzes the error on prediction obtained under different data type availability for calibration. The contribution of different measurement types to model calibration and prognosis are evaluated. A coupled 2D hydro-mechanical model of a water retaining dam is taken as an example. Here, the mean effective stress in the porous skeleton is reduced due to an increase in pore water pressure under drawdown conditions. Relevant model parameters are identified by scaled sensitivities. Then, Particle Swarm Optimization is applied to determine the optimal parameter values and finally, the error in prognosis is determined. We compare the predictions of the optimized models with results from a forward run of the reference model to obtain the actual prediction errors. The analyses presented here were performed calibrating the hydro-mechanical model to 31 data sets of 100 observations of varying data types. The prognosis results improve when using diversified information for calibration. However, when using several types of information, the number of observations has to be increased to be able to cover a representative part of the model domain. For an analysis with constant number of observations, a compromise between data type availability and domain coverage proves to be the best solution. Which type of calibration information contributes to the best prognoses could not be determined in advance. The error in model prognosis does not depend on the error in calibration, but on the parameter error, which unfortunately cannot be determined in inverse problems since we do not know its real value. The best prognoses were obtained independent of calibration fit. However, excellent calibration fits led to an increase in prognosis error variation. In the case of excellent fits; parameters' values came near the limits of reasonable physical values more often. To improve the prognoses reliability, the expected value of the parameters should be considered as prior information on the optimization algorithm.}, subject = {Sensitivit{\"a}tsanalyse}, language = {en} } @article{Koehler, author = {K{\"o}hler, Hermann}, title = {Ergebnisse der Befragung zu Wohnstandortpr{\"a}ferenzen von Lebensweltsegmenten in Dresden}, doi = {10.25643/bauhaus-universitaet.2670}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20160822-26704}, abstract = {In vorliegender Studie werden die Wohnstandortpr{\"a}ferenzen der Sinus-Milieugruppen in Dresden {\"u}ber eine standardisierte Befragung (n=318) untersucht. Es wird unterschieden zwischen handlungsleitenden Wohnstandortpr{\"a}ferenzen, die durch Anhaltspunkte auf der Handlungsebene st{\"a}rker in Betracht gezogen werden sollten, und Wohnstandortpr{\"a}ferenzen, welche eher orientierenden Charakter haben. Die Wohnstandortpr{\"a}ferenzen werden untersucht anhand der Kategorien Ausstattung/Zustand der Wohnung/des n{\"a}heren Wohnumfeldes, Versorgungsstruktur, soziales Umfeld, Baustrukturtyp, Ortsgebundenheit sowie des Aspektes des Images eines Stadtviertels. Um die Befragten den Sinus-Milieugruppen zuordnen zu k{\"o}nnen, wird ein Lebensweltsegment-Modell entwickelt, welches den Anspruch hat, die Sinus-Milieugruppen in der Tendenz abzubilden. Die Studie kommt zu dem Ergebnis, dass die Angeh{\"o}rigen der verschiedenen Lebensweltsegmente in jeder Kategorie - wenn auch z.T. auf geringerem Niveau - signifikante Unterschiede in der Bewertung einzelner Wohnstandortpr{\"a}ferenzen aufweisen.}, subject = {Milieuforschung}, language = {de} } @masterthesis{Held2011, type = {Bachelor Thesis}, author = {Held, Janina}, title = {Entwurf eines Spieler-Modells f{\"u}r eine erweiterbare Spielplattform zur Ausbildung in der Bauphysik}, doi = {10.25643/bauhaus-universitaet.1524}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120117-15249}, school = {Bauhaus-Universit{\"a}t Weimar}, pages = {65}, year = {2011}, abstract = {Im Projekt Intelligentes Lernen besch{\"a}ftigen sich die Professuren Content Management und Web-Technologien, Systeme der Virtuellen Realit{\"a}t und Bauphysik der Bauhaus- Universit{\"a}t Weimar mit der Entwicklung innovativer Informationstechnologien f{\"u}r eLearning- Umgebungen. In den Teilbereichen Retrieval, Extraktion und Visualisierung großer Dokumentkollektionen, sowie simulations- und planbasierter Wissensvermittlung werden Algorithmen und Werkzeuge erforscht, um eLearning-Systeme leistungsf{\"a}higer zu machen und um somit den Lernerfolg zu optimieren. Ziel des Projekts, auf dem Gebiet des simulationsbasierten Wissenstransfers, ist die Entwicklung eines Multiplayer Online Games (MOG) zur Ausbildungsunterst{\"u}tzung in der Bauphysik. Im Rahmen der vorliegenden Bachelorarbeit wird f{\"u}r diese digitale Lernsoftware ein Spieler- Modell zur Verwaltung der spielerspezifischen Daten entworfen und in das bestehende Framework integriert. Der Schwerpunkt der Arbeit liegt in der Organisation der erlernten F{\"a}higkeiten des Spielers und in der an den Wissensstand angepassten Auswahl geeigneter Spielaufgaben. F{\"u}r die Anwendung im eLearning-Bereich ist die Erweiterbarkeit des Modells um neue Lernkomplexe eine wesentliche Anforderung.}, subject = {Skill}, language = {de} } @masterthesis{Kuehnert2011, type = {Bachelor Thesis}, author = {K{\"u}hnert, Christin}, title = {Entwicklung von Spielmechaniken f{\"u}r ein bauphysikalisches Social Game}, doi = {10.25643/bauhaus-universitaet.1522}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120117-15227}, school = {Bauhaus-Universit{\"a}t Weimar}, year = {2011}, abstract = {Eine der j{\"u}ngsten Entwicklungen in der Games Branche sind sogenannte Social Games. Hierbei handelt es sich um digitale Spiele, die innerhalb von sozialen Netzwerken, wie z.B. Facebook und Myspace, gespielt werden. Studien zeigen, dass kommerzielle digitale Spiele mehr als nur ein Zeitvertreib sind. Sie f{\"o}rdern sowohl kognitive, als auch affektive und psychomotorische Kompetenzen. Aus diesem Grund werden seit Jahrzehnten digitale Spiele in der P{\"a}dagogik eingesetzt, um ihre Motivationskraft zu nutzen, um Lerneffekte zu erzielen. Ziel dieser Arbeit ist es Spielmechaniken f{\"u}r ein bauphysikalisches Social Game zu entwickeln. Ausgehend von der Identifikation von Spielmechaniken, basierend auf einer Analyse der Funktionsweisen existierender popul{\"a}rer Social Games, und einem grundlegenden p{\"a}dagogischen Verst{\"a}ndnis bez{\"u}glich Digital Game Based Learning (DGBL), werden Spielmechaniken entwickelt, mit deren Hilfe bauphysikalische Fachkompetenzen vermittelt werden k{\"o}nnen.}, subject = {Computerunterst{\"u}tztes Lernen}, language = {de} } @masterthesis{Boewe, type = {Bachelor Thesis}, author = {B{\"o}we, Annelie}, title = {Entscheidungsfindung im Herstellungsprozess von Br{\"u}ckenkappen}, doi = {10.25643/bauhaus-universitaet.1644}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20120425-16447}, school = {Bauhaus-Universit{\"a}t Weimar}, abstract = {Im Rahmen dieser Arbeit wurde die Entscheidungsfindung im Herstellungsprozess von Br{\"u}ckenkappen untersucht. Es stellte sich heraus, dass die Fuzzy-Methode ein geeignetes Werkzeug sein k{\"o}nnte, die Teilprozesse auf die M{\"o}glichkeit ihrer Parallelisierung hin zu untersuchen. Um diese Theorie zu testen, wurde auf den Grundlagen von Arbeiten der Professur Baubetrieb und Bauverfahren der Prozess n{\"a}her analysiert und unterst{\"u}tzend durch eigene Recherchen ein UML-Diagramm erstellt, welches als Aktivit{\"a}tsdiagramm ausgebildet wurde. Aufbauend auf diesem Ablauf und den gewonnenen Kenntnissen zur Herstellung einer Br{\"u}ckenkappe, konnten die einzelnen Prozesse zu Teilprozessen, sogenannten Bausteinen, zusammengefasst werden. Diese Bausteine sind entstanden, um die Simulation m{\"o}glich zu machen, indem der Ablauf weniger komplex wird und nur die Prozesse zu beurteilen sind, die beeinflusst bzw. in ihrer Reihenfolge bis zu einem gewissen Grad variabel sind. Eine erleichterte Interaktion mit den Bausteinen und deren {\"U}berf{\"u}hrung in ein Simulationsprogramm wurde {\"u}ber Templates realisiert. So besitzt jeder Baustein eine einheitliche Struktur. Unter anderem beinhalten die Bausteine die jeweiligen Ressourcen und Parameter, sowie die Abh{\"a}ngigkeiten der Prozesse untereinander und die zugeh{\"o}rige Priorit{\"a}t. Zur Entscheidungsfindung wurde die Fuzzylogik herangezogen und die Problemstellung der Parallelisierung zum Ziel gesetzt. Die Realisierung wurde {\"u}ber einen Entscheidungsbaum und das daraus resultierende Regelwerk erreicht. Somit ließen sich, ausgehend von einem festgelegten Prozess und durch die Fuzzifizierung der Eingangsparameter Priorit{\"a}t, Prozessdauer und Verf{\"u}gbarkeit der Ressourcen und Arbeitskr{\"a}fte, verschiedene Pfade identifizieren, allerdings nur in Verbindung mit den vorher analysierten Abh{\"a}ngigkeiten. F{\"u}r jeden der Eingangsparameter wurden so Fuzzy-Sets erstellt. {\"U}ber den Entscheidungsbaum, welcher mit den linguistischen Variablen versehen wurde, konnte {\"u}ber sogenannte "und" - Verkn{\"u}pfungen das Regelwerk aufgestellt werden. Das gek{\"u}rzte Regelwerk in dieser Arbeit beinhaltet grunds{\"a}tzlich nur die Regeln, die auch zu einer wirklichen Entscheidung f{\"u}hren. Daraus folgt, dass es m{\"o}glich ist mittels der Fuzzy-Methode eine Entscheidung dar{\"u}ber zu f{\"a}llen, ob zwei Prozesse zu parallelisieren sind oder nicht und aufgetretene Verz{\"o}gerungen wieder eingeholt werden k{\"o}nnen.}, subject = {Entscheidungsfindung}, language = {de} }