TY - JOUR A1 - Ghasemi, Hamid A1 - Brighenti, Roberto A1 - Zhuang, Xiaoying A1 - Muthu, Jacob A1 - Rabczuk, Timon T1 - Optimum fiber content and distribution in fiber-reinforced solids using a reliability and NURBS based sequential optimization approach JF - Structural and Multidisciplinary Optimization N2 - Optimum _ber content and distribution in _ber-reinforced solids using a reliability and NURBS based sequential optimization approach KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 99 EP - 112 ER - TY - CHAP A1 - Müller, Matthias A1 - Ludwig, Horst-Michael A1 - Ben Haha, Mohsen A1 - Zajac, Maciej ED - Ludwig, Horst-Michael T1 - Optimization of multi-component cements containing clinker, slag, V-fly ash, limestone T2 - Tagungsband 19. Ibausil - 19. Internationale Baustofftagung, 16. - 18.09.2015, Weimar. Band 2 N2 - The aim of this study was to investigate the optimization of the strength development of quaternary cements with 50 % clinker by a variation of the particle size distribution of the components GGBFS, fly ash and limestone powder. By balancing the overall PSD of the cement by using unprocessed fly ash and coarse limestone powder in combination with a very fine GGBFS, the water demand of the resulting quaternary cements remained unaltered, while the compressive strength of the cements was increased significantly after 7d, 28 and 56d. As can be expected, the quaternary cement with 30 wt.% of the fine slag exhibited a stronger strength increase (about 18 % after 28 d) than the cements with only 20 wt.% slag (about 10% after 28d). KW - Zement KW - Cement KW - Slag KW - Fly ash KW - Limestone powder KW - Particle size distribution Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20240507-48700 SN - 978-3-00-050225-5 (Bauhaus-Universitätsverlag Weimar) ER - TY - CHAP A1 - Stokmaier, Markus A1 - Class, A.G. A1 - Schulenberg, T. A1 - Lahey Jr., R.T ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - OPTIMISING ACOUSTIC RESONATORS FOR SONOFUSION EXPERIMENTS WITH EVOLUTIONARY ALGORITHMS T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - The sizing of simple resonators like guitar strings or laser mirrors is directly connected to the wavelength and represents no complex optimisation problem. This is not the case with liquid-filled acoustic resonators of non-trivial geometries, where several masses and stiffnesses of the structure and the fluid have to fit together. This creates a scenario of many competing and interacting resonances varying in relative strength and frequency when design parameters change. Hence, the resonator design involves a parameter-tuning problem with many local optima. As its solution evolutionary algorithms (EA) coupled to a forced-harmonic FE simulation are presented. A new hybrid EA is proposed and compared to two state-of-theart EAs based on selected test problems. The motivating background is the search for better resonators suitable for sonofusion experiments where extreme states of matter are sought in collapsing cavitation bubbles. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28202 SN - 1611-4086 ER - TY - CHAP A1 - Hölter, Raoul A1 - Mahmoudi, Elham A1 - Schanz, Tom ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - OPTIMAL SENSOR LOCATION FOR PARAMETER IDENTIFICATION IN SOFT CLAY T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - Performing parameter identification prior to numerical simulation is an essential task in geotechnical engineering. However, it has to be kept in mind that the accuracy of the obtained parameter is closely related to the chosen experimental setup, such as the number of sensors as well as their location. A well considered position of sensors can increase the quality of the measurement and to reduce the number of monitoring points. This Paper illustrates this concept by means of a loading device that is used to identify the stiffness and permeability of soft clays. With an initial setup of the measurement devices the pore water pressure and the vertical displacements are recorded and used to identify the afore mentioned parameters. Starting from these identified parameters, the optimal measurement setup is investigated with a method based on global sensitivity analysis. This method shows an optimal sensor location assuming three sensors for each measured quantity, and the results are discussed. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28008 SN - 1611-4086 ER - TY - CHAP A1 - Rodrigues, M. Manuela ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - OPERATIONAL PROPERTIES OF THE LAGUERRE TRANSFORM T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - The Laguerre polynomials appear naturally in many branches of pure and applied mathematics and mathematical physics. Debnath introduced the Laguerre transform and derived some of its properties. He also discussed the applications in study of heat conduction and to the oscillations of a very long and heavy chain with variable tension. An explicit boundedness for some class of Laguerre integral transforms will be present. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28186 SN - 1611-4086 ER - TY - CHAP A1 - Al-Yasiri, Zainab A1 - Gürlebeck, Klaus ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - ON BOUNDARY VALUE PROBLEMS FOR P-LAPLACE AND P-DIRAC EQUATIONS T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - The p-Laplace equation is a nonlinear generalization of the Laplace equation. This generalization is often used as a model problem for special types of nonlinearities. The p-Laplace equation can be seen as a bridge between very general nonlinear equations and the linear Laplace equation. The aim of this paper is to solve the p-Laplace equation for 2 < p < 3 and to find strong solutions. The idea is to apply a hypercomplex integral operator and spatial function theoretic methods to transform the p-Laplace equation into the p-Dirac equation. This equation will be solved iteratively by using a fixed point theorem. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-27928 SN - 1611-4086 ER - TY - RPRT A1 - König, Reinhard A1 - Tapias, Estefania A1 - Schmitt, Gerhard T1 - New Methods in Urban Analysis and Simulation: Documentation of teaching results from the spring semester 2015 N2 - Documentation of teaching results from the spring semester 2015 at the chair of Information Architecture at ETH Zurich KW - Architektur Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20160118-25052 ER - TY - JOUR A1 - Arash, Behrouz A1 - Rabczuk, Timon A1 - Jiang, Jin-Wu T1 - Nanoresonators and their applications: a state of the art review JF - Applied Physics Reviews N2 - Nanoresonators and their applications: a state of the art review KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 ER - TY - THES A1 - Goedicke, Glenn T1 - Mögliche Schnittstellenverschiebungen zwischen Bau- und Nebentätigkeiten auf ausdifferenzierten Baustellen aus arbeitsrechtlicher Sicht N2 - In der modernen Arbeitswelt ist es üblich betriebliche Aufgaben extern zu vergeben. Dieser Vorgang wird in der Wirtschaft Outsourcing genannt und beschränkt sich in der Regel auf Arbeiten, welche nicht zu den Kernkompetenzen eines Unternehmens gehören. Wenn diese Arbeiten durch spezialisierte Unternehmen übernommen werden ergeben sich Potenziale, die weit über eine bloße Kostensenkung hinausgehen. Der Kern dieser Arbeit bezieht sich auf die Auslagerung von sogenannten Nebentätigkeiten im Zusammenhang einer Bauwerksausführung. Dabei werden die arbeitsrechtliche Situation, Machbarkeit und Sinnhaftigkeit analysiert. Das Arbeitsrecht im Baugewerbe ist überaus komplex und von starren Regelungen geprägt. Die für allgemeinverbindlich erklärten Tarifverträge gelten gemeinhin für alle Betriebe, die überwiegend bauliche Tätigkeiten ausüben. Problematisch wird die tarifliche Zuordnung für Betriebe, welche die Nebentätigkeiten übernehmen und für gewöhnlich nicht in den Geltungsbereich der Tarifverträge fallen. Bei der Vergabe von Nebentätigkeiten mit Hilfe von Werk- oder Dienstverträgen bedarf es einer genauen Klärung, ab wann eine unerlaubte Arbeitnehmerüberlassung beginnt. Im Rahmen dieser Arbeit soll untersucht werden, inwieweit eine Auslagerung der baulichen Nebentätigkeiten durch eine Werk- oder Dienstvertragsvergabe an die Grenzen der arbeitsrechtlichen Gegebenheiten stößt. Zusätzlich wird eine tarifliche Einordnung der Tätigkeiten vorgenommen. KW - Arbeitsrecht KW - Leiharbeit KW - Outsourcing Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150629-24192 ER - TY - JOUR A1 - Birkholz, Marie Luise T1 - Mächtiger Boden. Essay über den Versuch, einen Staatsapparat zu erlaufen JF - sub\urban. Zeitschrift für Kritische Stadtforschung N2 - Der Text folgt in essayistischer Form einem Spaziergang durch das politische Zentrum Brasílias in Brasilien. Die Konzentration liegt auf der Gestaltung des Bodens. Wie ist die Planhauptstadt „vom Reißbrett“ in der Horizontalen gestaltet? Wie sehen repräsentative Plätze einer Stadt aus, die vor allem für Autos gebaut worden ist? Der forschende Blick liegt auf dem erlebten Ist-Zustand und wird assoziativ mit Ergebnissen der Forschungsarbeit aus Deutschland reflektiert. „Mächtiger Boden“ entstand als Satellit zur aktuellen Forschung der Autorin im Rahmen eines Aufenthalts in Brasilien. KW - Brasilia KW - Stadtplanung KW - Brasilia KW - Stadtgestaltung KW - Bodengestaltung KW - Spaziergang KW - politische Repräsentation Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20220112-45591 UR - https://zeitschrift-suburban.de/sys/index.php/suburban/article/view/200 VL - 2015 IS - Band 3, Heft 2 SP - 141 EP - 154 PB - ub\urban e.V. CY - Berlin ER - TY - JOUR A1 - Mortazavi, Bohayra A1 - Rabczuk, Timon T1 - Multiscale modeling of heat conduction in graphene laminates JF - Carbon N2 - Multiscale modeling of heat conduction in graphene laminates KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 1 EP - 7 ER - TY - JOUR A1 - Ilyani Akmar, A.B. A1 - Kramer, O. A1 - Rabczuk, Timon T1 - Multi-objective evolutionary optimization of sandwich structures: An evaluation by elitist non-dominated sorting evolution strategy JF - American Journal of Engineering and Applied Sciences N2 - In this study, an application of evolutionary multi-objective optimization algorithms on the optimization of sandwich structures is presented. The solution strategy is known as Elitist Non-Dominated Sorting Evolution Strategy (ENSES) wherein Evolution Strategies (ES) as Evolutionary Algorithm (EA) in the elitist Non-dominated Sorting Genetic algorithm (NSGA-II) procedure. Evolutionary algorithm seems a compatible approach to resolve multi-objective optimization problems because it is inspired by natural evolution, which closely linked to Artificial Intelligence (AI) techniques and elitism has shown an important factor for improving evolutionary multi-objective search. In order to evaluate the notion of performance by ENSES, the well-known study case of sandwich structures are reconsidered. For Case 1, the goals of the multi-objective optimization are minimization of the deflection and the weight of the sandwich structures. The length, the core and skin thicknesses are the design variables of Case 1. For Case 2, the objective functions are the fabrication cost, the beam weight and the end deflection of the sandwich structures. There are four design variables i.e., the weld height, the weld length, the beam depth and the beam width in Case 2. Numerical results are presented in terms of Paretooptimal solutions for both evaluated cases. KW - Optimierung KW - Stahlbau KW - Multi-objective Evolutionary Optimization, Elitist Non- Dominated Sorting Evolution Strategy (ENSES), Sandwich Structure, Pareto-Optimal Solutions, Evolutionary Algorithm Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170418-31402 SP - 185 EP - 201 ER - TY - JOUR A1 - Mortazavi, Bohayra A1 - Pereira, Luiz Felipe C. A1 - Jiang, Jin-Wu A1 - Rabczuk, Timon T1 - Modelling heat conduction in polycrystalline hexagonal boron-nitride films JF - Scientific Reports N2 - We conducted extensive molecular dynamics simulations to investigate the thermal conductivity of polycrystalline hexagonal boron-nitride (h-BN) films. To this aim, we constructed large atomistic models of polycrystalline h-BN sheets with random and uniform grain configuration. By performing equilibrium molecular dynamics (EMD) simulations, we investigated the influence of the average grain size on the thermal conductivity of polycrystalline h-BN films at various temperatures. Using the EMD results, we constructed finite element models of polycrystalline h-BN sheets to probe the thermal conductivity of samples with larger grain sizes. Our multiscale investigations not only provide a general viewpoint regarding the heat conduction in h-BN films but also propose that polycrystalline h-BN sheets present high thermal conductivity comparable to monocrystalline sheets. KW - Wärmeleitfähigkeit KW - Bornitrid KW - Finite-Elemente-Methode Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170425-31534 ER - TY - JOUR A1 - Kumar, S. A1 - Singh, I. A1 - Mishra, B.K. A1 - Rabczuk, Timon T1 - Modeling and Simulation of Kinked Cracks by Virtual Node XFEM JF - Computer Methods in Applied Mechanics and Engineering N2 - Modeling and Simulation of Kinked Cracks by Virtual Node XFEM KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 1425 EP - 1466 ER - TY - THES A1 - Jia, Yue T1 - Methods based on B-splines for model representation, numerical analysis and image registration N2 - The thesis consists of inter-connected parts for modeling and analysis using newly developed isogeometric methods. The main parts are reproducing kernel triangular B-splines, extended isogeometric analysis for solving weakly discontinuous problems, collocation methods using superconvergent points, and B-spline basis in image registration applications. Each topic is oriented towards application of isogeometric analysis basis functions to ease the process of integrating the modeling and analysis phases of simulation. First, we develop reproducing a kernel triangular B-spline-based FEM for solving PDEs. We review the triangular B-splines and their properties. By definition, the triangular basis function is very flexible in modeling complicated domains. However, instability results when it is applied for analysis. We modify the triangular B-spline by a reproducing kernel technique, calculating a correction term for the triangular kernel function from the chosen surrounding basis. The improved triangular basis is capable to obtain the results with higher accuracy and almost optimal convergence rates. Second, we propose an extended isogeometric analysis for dealing with weakly discontinuous problems such as material interfaces. The original IGA is combined with XFEM-like enrichments which are continuous functions themselves but with discontinuous derivatives. Consequently, the resulting solution space can approximate solutions with weak discontinuities. The method is also applied to curved material interfaces, where the inverse mapping and the curved triangular elements are considered. Third, we develop an IGA collocation method using superconvergent points. The collocation methods are efficient because no numerical integration is needed. In particular when higher polynomial basis applied, the method has a lower computational cost than Galerkin methods. However, the positions of the collocation points are crucial for the accuracy of the method, as they affect the convergent rate significantly. The proposed IGA collocation method uses superconvergent points instead of the traditional Greville abscissae points. The numerical results show the proposed method can have better accuracy and optimal convergence rates, while the traditional IGA collocation has optimal convergence only for even polynomial degrees. Lastly, we propose a novel dynamic multilevel technique for handling image registration. It is application of the B-spline functions in image processing. The procedure considered aims to align a target image from a reference image by a spatial transformation. The method starts with an energy function which is the same as a FEM-based image registration. However, we simplify the solving procedure, working on the energy function directly. We dynamically solve for control points which are coefficients of B-spline basis functions. The new approach is more simple and fast. Moreover, it is also enhanced by a multilevel technique in order to prevent instabilities. The numerical testing consists of two artificial images, four real bio-medical MRI brain and CT heart images, and they show our registration method is accurate, fast and efficient, especially for large deformation problems. KW - Finite-Elemente-Methode KW - isogeometric methods Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20151210-24849 ER - TY - JOUR A1 - Mortazavi, Bohayra A1 - Cuniberti, G. A1 - Rabczuk, Timon T1 - Mechanical properties and thermal conductivity of graphitic carbon nitride: A molecular dynamics study JF - Computational Materials Science N2 - Mechanical properties and thermal conductivity of graphitic carbon nitride: A molecular dynamics study KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 285 EP - 289 ER - TY - CHAP A1 - Treyer, Lukas A1 - Klein, Bernhard A1 - König, Reinhard A1 - Meixner, Christine T1 - Lightweight urban computation interchange (LUCI) system T2 - Proceedings N2 - In this paper we introduce LUCI, a Lightweight Urban Calculation Interchange system, designed to bring the advantages of a calculation and content co-ordination system to small planning and design groups by the means of an open source middle-ware. The middle-ware focuses on problems typical to urban planning and therefore features a geo-data repository as well as a job runtime administration, to coordinate simulation models and its multiple views. The described system architecture is accompanied by two exemplary use cases that have been used to test and further develop our concepts and implementations. KW - Luci KW - distributed computing KW - middleware Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20160622-25982 UR - https://e-pub.uni-weimar.de/opus4/frontdoor/index/index/docId/2504 PB - FOSS4G CY - Seoul, South Korea ER - TY - CHAP A1 - Treyer, Lukas A1 - Klein, Bernhard A1 - König, Reinhard A1 - Meixner, Christine T1 - Lightweight urban computation interchange (LUCI) system T2 - FOSS4G 2015 Conference N2 - In this paper we introduce LUCI, a Lightweight Urban Calculation Interchange system, designed to bring the advantages of a calculation and content co-ordination system to small planning and design groups by the means of an open source middle-ware. The middle-ware focuses on problems typical to urban planning and therefore features a geo-data repository as well as a job runtime administration, to coordinate simulation models and its multiple views. The described system architecture is accompanied by two exemplary use cases that have been used to test and further develop our concepts and implementations. KW - Architektur KW - Informatik KW - Geographie KW - Luci KW - distributed computing KW - middleware Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20160118-25042 PB - FOSS4G CY - Seoul, South Korea ER - TY - THES A1 - Rodríguez Schaeffer, Alan Paul T1 - Lighting in urban heritage: case study of Chiapa de Corzo, Chiapas, Mexico N2 - As human thought was developing, likewise, the technology used for illumination was growing. But a haul through history, reviewing its pages and analyzing it, inherently brings up old and new question, like: Is it possible to alter negatively the image of historic buildings and monuments through inadequate lighting to the degree of distorting the perception that people have of the work? and if so, what are the causes that generate it? Do the light designers take into consideration criteria to protect not only historic buildings and monuments, but also the environment? What are the consequences that may generate the inadequate lighting of urban heritage to the environment? What are the factors to consider for a proper illumination of urban heritage? The answers to these questions will help lay the foundation for proper illumination of the urban heritage, avoiding at the maximum the light pollution and the effects that it generates, seeking a balance and harmonious reconciliation between the technology, urban heritage and environment, taking as a framework and the case study the urban heritage of a city from the colonial era in southern Mexico, with pre-Hispanic roots and where today you can still see through its streets and buildings an atmosphere of mysticism reflection of their folklore and traditions, this city is known as Chiapa de Corzo, Chiapas. KW - Architectual lighting KW - Architecture KW - Urban Heritage KW - Conservation KW - Konservierung KW - Beleuchtung Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150630-24217 ER - TY - CHAP A1 - Neri, Maria Luisa T1 - Landscape and City during Fascism: Enrico del Debbio’s Foro Mussolini T2 - Urban design and dictatorship in the 20th century: Italy, Portugal, the Soviet Union, Spain and Germany. History and Historiography N2 - Beiträge zum Symposium „Urban design and dictatorship in the 20th century: Italy, Portugal, the Soviet Union, Spain and Germany. History and Historiography“. Weimar, 21.-22. November 2013 N2 - For decades in Germany, historical research on dictatorial urban design in the first half of the 20th century focused on the National Socialist period. Studies on the urban design practices of other dictatorships remained an exception. This has changed. Meanwhile, the urban production practices of the Mussolini, Stalin, Salazar, Hitler and Franco dictatorships have become the subject of comprehensive research projects. Recently, a research group that studies dictatorial urban design in 20th century Europe has emerged at the Bauhaus-Institut für Geschichte und Theorie der Architektur und der Planung. The group is already able to refer to various research results. Part of the research group’s self-conception is the assumption that the urban design practices of the named dictatorships can only be properly understood from a European perspective. The dictatorships influenced one another substantially. Furthermore, the specificities of the practices of each dictatorship can only be discerned if one can compare them to those of the other dictatorships. This approach requires strict adherence to the research methods of planning history and urban design theory. Meanwhile, these methods must be opened to include those of general historical studies. With this symposium, the research group aims to further qualify this European perspective. The aim is to pursue an inventory of the various national historiographies on the topic of “urban design and dictatorship”. This inventory should offer an overview on the general national level of historical research on urban design as well as on the level of particular urban design projects, persons or topics. The symposium took place in Weimar, November 21-22, 2013. It was organized by Harald Bodenschatz, Piero Sassi and Max Welch Guerra and funded by the DAAD (German Academic Exchange Service). KW - Städtebau KW - urban history, urban design, fascist period, sport city, Rome, Enrico Del Debbio Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150504-23877 SP - 1 EP - 16 ER - TY - THES A1 - Chen, Hsi-Jen T1 - Kulturelle Unterschiede bei der Nutzung von Smartphones in Deutschland, China und Taiwan N2 - Theoretischer Teil: Durch den Vergleich der Daten, die sowohl von den Instituten bzw. Statistikunternehmen z. B. Google, Bundesnetzagentur und Statista in Deutschland, 中国互联网络信息中心 in China, FIND in Taiwan usw. zur Verfügung gestellt wurden, als auch durch die von mir durchgeführten Umfragen in den jeweiligen Ländern, sowie durch die Interviews in Weimar, zeigen sich die kulturellen Unterschiede sowie die Gemeinsamkeiten bei der Nutzung des Smartphones. Darüber hinaus ergaben sich noch einige Konsequenzen bei den Interpretationen dieser Ergebnisse, die eng mit der Entstehung der kulturellen Unterschiede zusammenhängen. Praktischer Teil: Der erste Entwurf ist eine visuelle Tastatur. Um die Bildschirmtastatur zu verbessern, versucht type right ! (der Name meines Entwurfs) das Problem von Vertippen beim Eingeben zu lösen. type right ! hat zwei Schwerpunkte: 1. geänderte Positionen der Buchstaben und Zeichen und 2. geänderte Form der Taste. Der zweite Entwurf handelt von einem Konzept einer App für die Integrationsmöglichkeit der Kommunikation. KW - Smartphone KW - Kultur KW - Actor-Network-Theory KW - Apparatgeist-Theorie KW - westliche Kultur KW - asiatische Kultur KW - Smartphone KW - Akteur-Netzwerk-Theorie KW - Apparatgeist-Theorie Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150223-23517 ER - TY - JOUR A1 - Thai, Chien H. A1 - Nguyen-Xuan, Hung A1 - Bordas, Stéphane Pierre Alain A1 - Nguyen-Thanh, Nhon A1 - Rabczuk, Timon T1 - Isogeometric analysis of laminated composite plates using the higher-order shear deformation theory JF - Mechanics of Advanced Materials and Structures N2 - Isogeometric analysis of laminated composite plates using the higher-order shear deformation theory KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 451 EP - 469 ER - TY - THES A1 - Lehmann, Martin T1 - Investigations of the Loadbearing Behaviour of Timber Bending Beams Reinforced Using Prestressed CFRP-Lamellas N2 - The refurbishment of old buildings often goes hand in hand with an increase in both the dead and live loads. The latter, combined with the higher safety factors, often make the reinforcement of the old structures necessary. Most reinforcement methods involve transforming a structural timber member into a composite beam. Composite sections have a long tradition in timber construction. In the early days, multiple timber beams were connected with interlocking tooth and wooden shear connecters, which resulted in an elastic connection. Although historical timber structures are frequently upgraded, no method has yet been established and fully accepted by all stakeholders such as owners, builders, architects, engineers and cultural heritage organisations. Carbon fibre-reinforced polymers (CFRP) have already shown their efficiency in structural reinforcement especially in concrete structures. Moreover, previous studies have shown that CFRP has the potential to meet the expectations of all parties involved. In order to reach the service-limit state, a high amount of carbon fibres has to be used, or considering the cost of reinforcement, prestress has to be applied. However, prestressing often goes hand-in-hand with delaminating issues. The camber method presented here offers an efficient solution for prestressing timber bending members and overcoming the known obstacles. In the method proposed, the timber beam is cambered using an adjustable prop at midspan during the bonding of the CRFP-lamella to the lower side of the bending member. After curing the adhesive, the prop is removed and the prestressed composite beam is ready to be used. The prestress introduced in the system is not constant, but has a triangular shape and peaks at midspan, where it is used the most. The prestress force, which declines towards the end of the beam, leads to a constant shear stress over the whole length of the reinforcement,avoiding a concentrated anchorage zone. An analytical calculation model has been developed to calculate and design prestressed timber- bending members using the camber method. Numerical modelling, using a multi-surface plasticity model for timber, confirmed the results from the analytical model, and clearly reduced delaminating issues, comparing very favourably to traditional prestressing methods. The experimental parametric study, including the determination of the short-term loadbearing capacity of structural-sized beams, showed agreement with the analytical and numerical calculation. The prestressed reinforcement showed a benefit of nearly 50% towards the ultimate-limit state and up to 70% towards the service-limit state. Calculations revealed that the use of high modulus CFRP allows even higher benefits, depending on the configurations and requirements. The long-term design of the prestressed composite beam was investigated by extending the analytical model. The creep of the timber leads to a load transfer from the timber towards the CFRP, and therefore increases the benefit towards the ultimatelimit design. Applying high modulus CFRP-lamellas allows for a complete utilisation of the design capacity of timber and carbon fibre-reinforced polymer. The thorough investigation conducted demonstrated that the camber method is an efficient technique for prestressing and reinforcing timber-bending members. Furthermore, the calculation model presented allows for a safe design and estimation of long-term behaviour. N2 - Die Sanierung von bestehenden Gebäuden bringt häufig eine Erhöhung der Nutz- und Auflasten mit sich. Dies und die von den neuen Normen geforderten höheren Sicherheitsfaktoren erfordern oft eine Verstärkung der bestehenden Tragstruktur. Die meisten Massnahmen verwandeln den Holzbalken in einen Verbundquerschnitt. Zusammengesetzte Querschnitte haben in der Holzkonstruktion eine lange Tradition. Zu Beginn wurden die Konstruktionen durch Verzahnen und / oder durch Hartholzdübel respektive Keile miteinander verbunden. Kohlefaser verstärke Kunststoffe (CFK) haben bereits den Nachweis der Effizienz zur Verstärkung bestehender Strukturen erbracht, dies insbesondere im Betonbau. Verstärkungen im Holzbau werden bereits durchgeführt, jedoch hat sich bis heute noch keine Methode etabliert welche für alle involvierten Parteien wie Bauherr, Bauunternehmung, Architekt Ingenieur und Denkmalpflege zufriedenstellend ist. Verschiedene Untersuchungen zeigten, dass CFK das Potenzial hat diese Ansprüche zu erfüllen. Um mit dem Hochleistungsmaterial CFK auch die Durchbiegung reduzieren zu können ist entweder eine Vorspannung notwendig oder es muss andererseits sehr viel CFK eingesetzt werden, was die Methode unnötig verteuert. Leider kommt eine Vorspannung meist Hand in Hand mit Delaminierungsproblemen. Die Ursache dafür sind konzentrierte Schubspannungen an den Lamellenenden. Hier setzt die in der Dissertation präsentierte Methode zur Vorspannung von Biegebalken an und löst die bekannten Probleme. Die Vorspannung wird durch Überhöhung des zu sanierenden Balkens während der Verklebung mit der Kohlefaserlamelle erzeugt. Dies erfolgt mit Hilfe einer Schalungsstütze in der Mitte des Balkens. Durch das Entfernen der Schalungsstütze wird der verstärkte Balken vorgespannt und kann belastet werden. Das durch die Überhöhung induzierte Biegemoment ist dreieckförmig. Daher ist die Schubspannung in der Klebefuge gleichmässig über die Länge verteilt und auf eine konzentrierte Verankerung der Vorspannkraft wird verzichtet. Die Vorspannkraft ist in der Mitte, wo sie am meisten benötigt wird, am grössten und gegen aussen abnehmend. Ein analytisches Berechnungsmodel zur Berechnung und Dimensionierung von Balken, welche mit der präsentierten Methode vorgespannt sind, wurde entwickelt. Nummerische Modellierungen mit einem nichtlinearen Materialmodell für Holz bestätigten die Resultate der analytischen Berechnungen und das klar reduzierte Risiko gegenüber Delaminierung. Die Laborversuche beinhalteten eine Parameterstudie sowie die Ermittlung der Bruchlast von vorgespannten Holzbalken mit baupraktischen Abmessungen. Die Tragfähigkeit konnte um ca. 50 % gesteigert werden. Der Beitrag zur vebrauchstauglichkeit war, abhängig vom Gefährdungsbild, bis zu 70 %. Berechnungen zeigten, dass bei der Verwendung von hochmoduligen CFK-Lamellen diese Werte je nach Anforderung und Gefährdungsbild noch höher ausfallen. Das Langzeitverhalten des Verbundquerschnittes wurde analytisch untersucht. Durch das Kriechen des Holzes wird es über die Zeit leicht entlastet und der CFK übernimmt mehr Last. Bei hochmoduligen CFK-Lamellen kann die Kapazität von Holz und CFK vollständig ausgenutzt werden. Die ausführlichen Untersuchungen bewiesen die Effizienz der präsentierten Verstärkungsmethode. Mit dem analytischen Berechnungsmodell können verstärkte Balken sicher dimensioniert und das Langzeitverhalten abgeschätzt werden. KW - Holzbau KW - Sanierung KW - Kohlenstofffaserverstärkter Kunststoff KW - Verbund KW - Vorspannung KW - timber structure KW - reinforcement KW - CFRP KW - prestress KW - composite Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150916-24566 ER - TY - JOUR A1 - König, Reinhard T1 - Interview on Information Architecture JF - Swiss Architecture in the Moving Image N2 - Interview on Information Architecture KW - Architektur Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20180422-25078 SP - 151 EP - 154 ER - TY - CHAP ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar T1 - Internationales Kolloquium über Anwendungen der Informatik und Mathematik in Architektur und Bauwesen : 20. bis 22.7. 2015, Bauhaus-Universität Weimar T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - The 20th International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering will be held at the Bauhaus University Weimar from 20th till 22nd July 2015. 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! KW - Angewandte Informatik KW - Angewandte Mathematik KW - Computerunterstütztes Verfahren KW - Building Information Modeling KW - Optimization in engineering applications KW - Data, information and knowledge modeling in civil engineering KW - Function theoretic methods and PDE in engineering sciences KW - Mathematical methods for (robotics and) computer vision KW - Numerical modeling in engineering Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150828-24515 SN - 1611-4086 ER - TY - JOUR A1 - Ghasemi, Hamid A1 - Kerfriden, Pierre A1 - Bordas, Stéphane Pierre Alain A1 - Muthu, Jacob A1 - Zi, Goangseup A1 - Rabczuk, Timon T1 - Interfacial shear stress optimization in sandwich beams with polymeric core using nonuniform distribution of reinforcing ingredients JF - Composite Structures N2 - Interfacial shear stress optimization in sandwich beams with polymeric core using nonuniform distribution of reinforcing ingredients KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 221 EP - 230 ER - TY - CHAP A1 - Smarsly, Kay A1 - Tauscher, Eike ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - IFC-BASED MONITORING INFORMATION MODELING FOR DATA MANAGEMENT IN STRUCTURAL HEALTH MONITORING T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - This conceptual paper discusses opportunities and challenges towards the digital representation of structural health monitoring systems using the Industry Foundation Classes (IFC) standard. State-of-the-art sensor nodes, collecting structural and environmental data from civil infrastructure systems, are capable of processing and analyzing the data sets directly on-board the nodes. Structural health monitoring (SHM) based on sensor nodes that possess so called “on-chip intelligence” is, in this study, referred to as “intelligent SHM”, and the infrastructure system being equipped with an intelligent SHM system is referred to as “intelligent infrastructure”. Although intelligent SHM will continue to grow, it is not possible, on a well-defined formalism, to digitally represent information about sensors, about the overall SHM system, and about the monitoring strategies being implemented (“monitoring-related information”). Based on a review of available SHM regulations and guidelines as well as existing sensor models and sensor modeling languages, this conceptual paper investigates how to digitally represent monitoring-related information in a semantic model. With the Industry Foundation Classes, there exists an open standard for the digital representation of building information; however, it is not possible to represent monitoring-related information using the IFC object model. This paper proposes a conceptual approach for extending the current IFC object model in order to include monitoring-related information. Taking civil infrastructure systems as an illustrative example, it becomes possible to adequately represent, process, and exchange monitoring-related information throughout the whole life cycle of civil infrastructure systems, which is referred to as monitoring information modeling (MIM). However, since this paper is conceptual, additional research efforts are required to further investigate, implement, and validate the proposed concepts and methods. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28237 SN - 1611-4086 ER - TY - CHAP A1 - Birkholz, Marie Luise T1 - Granite on the Ground: Former Nazi Party Rally Grounds, Nuremberg/Germany. A brief introduction T2 - Urban design and dictatorship in the 20th century: Italy, Portugal, the Soviet Union, Spain and Germany. History and Historiography N2 - Beiträge zum Symposium „Urban design and dictatorship in the 20th century: Italy, Portugal, the Soviet Union, Spain and Germany. History and Historiography“. Weimar, 21.-22. November 2013 N2 - For decades in Germany, historical research on dictatorial urban design in the first half of the 20th century focused on the National Socialist period. Studies on the urban design practices of other dictatorships remained an exception. This has changed. Meanwhile, the urban production practices of the Mussolini, Stalin, Salazar, Hitler and Franco dictatorships have become the subject of comprehensive research projects. Recently, a research group that studies dictatorial urban design in 20th century Europe has emerged at the Bauhaus-Institut für Geschichte und Theorie der Architektur und der Planung. The group is already able to refer to various research results. Part of the research group’s self-conception is the assumption that the urban design practices of the named dictatorships can only be properly understood from a European perspective. The dictatorships influenced one another substantially. Furthermore, the specificities of the practices of each dictatorship can only be discerned if one can compare them to those of the other dictatorships. This approach requires strict adherence to the research methods of planning history and urban design theory. Meanwhile, these methods must be opened to include those of general historical studies. With this symposium, the research group aims to further qualify this European perspective. The aim is to pursue an inventory of the various national historiographies on the topic of “urban design and dictatorship”. This inventory should offer an overview on the general national level of historical research on urban design as well as on the level of particular urban design projects, persons or topics. The symposium took place in Weimar, November 21-22, 2013. It was organized by Harald Bodenschatz, Piero Sassi and Max Welch Guerra and funded by the DAAD (German Academic Exchange Service). KW - Städtebau KW - material KW - dictatorial design KW - political intention KW - pavement KW - Second World War KW - preservation Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150925-24587 SP - 1 EP - 12 ER - TY - CHAP A1 - Kraußhar, Rolf Sören A1 - de Almeida, Regina ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - FUNDAMENTALS OF A WIMAN VALIRON THEORY FOR POLYMONOGENIC FUNCTIONS T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - In this paper we present some rudiments of a generalized Wiman-Valiron theory in the context of polymonogenic functions. In particular, we analyze the relations between different notions of growth orders and the Taylor coefficients. Our main intention is to look for generalizations of the Lindel¨of-Pringsheim theorem. In contrast to the classical holomorphic and the monogenic setting we only obtain inequality relations in the polymonogenic setting. This is due to the fact that the Almansi-Fischer decomposition of a polymonogenic function consists of different monogenic component functions where each of them can have a totally different kind of asymptotic growth behavior. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28100 SN - 1611-4086 ER - TY - JOUR A1 - Othold, Tim A1 - Voss, Christiane T1 - From media anthropology to anthropomediality JF - Anthropological Notebooks N2 - Media anthropology is a new and interdisciplinary field of research with very different subjects and methods that seems to be already heavily informed by a comparatively narrow understanding of media as mass media (e.g. TV, Internet, social web, etc.). Therefore, most theories in this field, at least implicitly, employ a hierarchical and often dichotomic preconception of the two poles of media-human relations, by analysing the operationalities and ontologies of the human and the media independently from one another. This article deviates from this line of thought by advocating an expanded, symmetrical and relational understanding of the terms media and human, taking them as always already intermingled facets of a broader dynamic configuration. Starting from a consideration of the historically powerful, yet overlooked media of the so-called habitat diorama, the heuristic concept of “anthropomediality” is to be developed. Eventually, this relational approach may open up a new, interesting field for interrogation of (media-)anthropological analysis in general. KW - Medien KW - Anthropologie KW - media anthropology, anthropomediality, anthropological knowledge, museum exhibitions, diorama, relationality Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170425-31573 SP - 75 EP - 82 ER - TY - JOUR A1 - Areias, Pedro A1 - Rabczuk, Timon A1 - Cesar de Sa, J.M. A1 - Garcao, J.E. T1 - Finite strain quadrilateral shell using least-squares _t of relative Lagrangian in-plane strains JF - Finite Elements in Analysis and Design N2 - Finite strain quadrilateral shell using least-squares _t of relative Lagrangian in-plane strains KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 26 EP - 40 ER - TY - CHAP A1 - Rodehorst, Volker ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - EVALUATION OF THE METRIC TRIFOCAL TENSOR FOR RELATIVE THREE-VIEW ORIENTATION T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - In photogrammetry and computer vision the trifocal tensor is used to describe the geometric relation between projections of points in three views. In this paper we analyze the stability and accuracy of the metric trifocal tensor for calibrated cameras. Since a minimal parameterization of the metric trifocal tensor is challenging, the additional constraints of the interior orientation are applied to the well-known projective 6-point and 7-point algorithms for three images. The experimental results show that the linear 7-point algorithm fails for some noise-free degenerated cases, whereas the minimal 6-point algorithm seems to be competitive even with realistic noise. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28178 SN - 1611-4086 ER - TY - CHAP A1 - Jentsch, Mark F. ED - Kornadt, Oliver T1 - Entwicklung eines Sommerreferenzjahres zur Bestimmung der sommerlichen Überhitzung von Gebäuden T2 - Bauphysiktage Kaiserslautern 2015, Kaiserslautern, 21-22 Oktober 2015 N2 - Die Ableitung von sommer-fokussierten warmen Referenzjahren aus langjährigen Klimadaten erfolgt in Europa bisher nach unterschiedlichen, länderspezifischen Methoden, die sich in der Regel allein auf die Trockentemperatur beziehen und in der Auswahl eines zusammenhängenden realen Sommerhalbjahres resultieren. Simulationsergebnisse zur sommerlichen Überhitzung von natürlich belüfteten Gebäuden in Deutschland und Großbritannien zeigen jedoch für einige Wetterstationen weniger Überhitzung für Simulationen mit dem sommer-fokussierten Referenzjahr als für solche mit dem entsprechenden Testreferenzjahr (TRY) für den gleichen Ort. Dies gilt insbesondere dann, wenn einzelne Monate miteinander verglichen werden. Neben der Wahl eines kompletten Halbjahres, das sowohl extrem warme als auch vergleichsweise kühle Monate beinhalten kann, liegt dies vor allem begründet in der fehlenden Berücksichtigung der Solarstrahlung bei der Auswahl eines warmen Referenzjahres, die jedoch eine wichtige Rolle für sommerliche Überhitzungserscheinungen in Gebäuden spielt. Eine verlässliche, allgemein anerkannte Methode zur Erstellung von sommer-fokussierten Referenzjahren erscheint daher auch im Hinblick auf die rechtlichen Rahmenbedingungen in der Europäischen Union, die Strategien zur natürlichen Belüftung von Neubauten und Sanierungen begünstigen, erforderlich. Diese Arbeit präsentiert einen Ansatz zur Erstellung eines Sommerreferenzjahres (Summer Reference Year – SRY) aus dem TRY eines gegebenen Ortes und langjährigen Klimadaten. Die existierenden TRY-Daten werden hierbei skaliert, um den Bedingungen für Trockentemperatur und Solarstrahlung von nah-extremen Kandidatenjahren zu entsprechen, die separat über einen statistischen Ansatz ausgewählt werden. Anschließend werden Feuchttemperatur, Windgeschwindigkeit und Luftdruck des TRY durch lineare Korrelationen mit der Trockentemperatur angepasst, um die entsprechenden SRY-Daten zu erhalten. Der Vorteil dieser Methode liegt darin, dass das grundlegende Wettermuster des TRY erhalten bleibt und somit eine klare Relation zwischen SRY und TRY besteht, die eine Vergleichbarkeit von Simulationsergebnissen gewährleistet. Über vergleichende Gebäudesimulationen mit dem zugrundeliegenden TRY und langjährigen Klimadatensätzen kann nachgewiesen werden, dass sich das SRY zur Ermittlung sommerlicher Überhitzungserscheinungen in natürlich belüfteten Gebäuden eignet. Weiterhin kann gezeigt werden, dass das SRY im Gegensatz zur direkten Nutzung eines Kandidatenjahres für einen nah-extremen Sommer die Möglichkeit eines monatsscharfen Vergleichs mit dem TRY erlaubt und frei von wenig repräsentativen Besonderheiten ist, die in den entsprechenden Kandidatenjahren vorhanden sein können. KW - Bauphysik KW - Gebäude KW - Simulation KW - Überhitzung Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170516-31058 PB - Eigenverlag der Technischen Universität Kaiserslautern CY - Kaiserslautern ER - TY - CHAP A1 - Gründel, Hendrik A1 - Ludwig, Horst-Michael A1 - Geisenhanslüke, Carsten A1 - Müller, Matthias T1 - Einfluss der Zusammensetzung von Portlandzementklinker und Sulfatträger auf das Erstarrungsverhalten von Spritzbeton T2 - Tagungsband 19. Ibausil - 19. Internationale Baustofftagung : 16.-18. September 2015, Weimar N2 - In der vorliegenden Studie wurde der Einfluss der Klinkerzusammensetzung sowie der Sulfatträgerart auf die Leistungsfähigkeit eines Spritzzementes untersucht. Um eine Untersulfatisierung im System mit einen Aluminiumsulfat / -hydroxid Beschleuniger zu vermeiden, sollte ein anhydritbasierter Sulfatträger eingesetzt werden. Dies führt zu einer besseren Festigkeitsentwicklung im jungen Alter. N2 - In the present study, the influence of the clinker composition as well as the setting agent type on the performance of a sprayed cement was investigated. To avoid undersulfatization in the system with an aluminum sulfate/hydroxide accelerator, an anhydrite-based setting agent should be used. This leads to a better strength development at a young age. KW - Beton KW - Spritzbeton KW - Zement KW - Spritzbeton KW - Spritzzement KW - Sulfatträger KW - Sprayed concrete KW - Setting agent Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20240507-48851 SN - 978-3-00-050225-5 (Bauhaus-Universitätsverlag Weimar) ER - TY - CHAP A1 - Ferreira, Milton dos Santos A1 - Vieira, Nelson ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - EIGENFUNCTIONS AND FUNDAMENTAL SOLUTIONS FOR THE FRACTIONAL LAPLACIAN IN 3 DIMENSIONS T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - Recently there has been a surge of interest in PDEs involving fractional derivatives in different fields of engineering. In this extended abstract we present some of the results developedin [3]. We compute the fundamental solution for the three-parameter fractional Laplace operator Δ by transforming the eigenfunction equation into an integral equation and applying the method of separation of variables. The obtained solutions are expressed in terms of Mittag-Leffer functions. For more details we refer the interested reader to [3] where it is also presented an operational approach based on the two Laplace transform. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-27968 SN - 1611-4086 ER - TY - JOUR A1 - Budarapu, Pattabhi Ramaiah A1 - Narayana, T.S.S. A1 - Rammohan, B. A1 - Rabczuk, Timon T1 - Directionality of sound radiation from rectangular panels JF - Applied Acoustics N2 - Directionality of sound radiation from rectangular panels KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 128 EP - 140 ER - TY - THES A1 - Chen, Pu T1 - Die Reise der Zeichen - Eine Studie zur symbolischen Bildwelt der Xiyü-Kultur an der Seidenstraße N2 - The present study focuses on the traditional visual Xiyu-Signs of various ethnic groups with the example of Xinjiang in northwest China, along the ancient path of the Silk Road. The research should be understood as an experiment to a systematic presentation of the symbolic visual world in Xinjiang and therefore in a broader sense as an experiment to preserve the endangered Xiyu-Cultural Heritage. Due to the profound change in China and the Go-West-Strategy of China’s economic programme an efficient way must be found to bring modernization and tradition in harmony. This study describes, analyses and evaluates exemplarily, how signs and symbols of knowledge and culture have been mixed between eastern and western cultures along the Silk Road in Xinjiang. It displays how they have been transferred and how far the Xiyu-Culture reflects, that Xinjiang was a meeting point of eastern and western cultures. In the process of my research three main questions arose: Firstly, what can the experience model of the ancient Silk Road contribute to the understanding of cultural development in today’s information age? Secondly, what does cultural diversity mean for communication in Xinjiang? Is there an increase of media technology in the field of visual communication because of international influences? Thirdly, how can Xinjiang benefit from the opportunities given by the Go-West-Strategy of China’s economic programme in an increasingly globalized world and find a balance between culture and economic prosperity? Therefore, this study uses a method that integrates a cultural-anthropological perspective. Characteristics of the traditional visual Xiyu-Signs, their significance for the ethnic groups in Xinjiang and cultural exchanges between Europe and Asia are discussed based on a field work, and the particular influence of trade and transport routes is presented. The visual signs of the Xiyu-Culture are shown from the time before the Islamization to today’s Islamic period. The research shows that the signs are not place-bound cultural phenomena or local tradition; they are rather influenced by regional, national and international cultures consciously or unconsciously. They are a result of cultural communication. Finally the signs of Xiyu-Culture of Xinjiang are thoroughly researched with the Go-West-Strategy of the Chinese government. Economic development brings to Xinjiang not only modernization and prosperity, but also a cultural and ecological imbalance. Mankind formed everything into structure, what he perceives around him, with signs. The Xiyu-Signs create a visual structure. The Xiyu-Culture still has influence on the lifestyle of the ethnic groups in Xinjiang. Today, the confrontation between the traditional Xiyu-Culture and economic development has led to a serious conflict in Xinjiang. This study is a critical interpretation of the current situation of Xiyu-Culture and the Chinese economic program in Xinjiang. It also contributes to the analysis of the hitherto insufficiently recognized interactions between history, culture, politics and economics of cultural globalization in Xinjiang. N2 - Kurzfassung Die vorliegende Studie untersucht die traditionellen Xiyü-Zeichen im Visuellen verschiedener Volksgruppen am Beispiel Xinjiangs im Nordwesten Chinas, wo einst die alte Seidenstraße entlangführte. Die Untersuchung versteht sich als ein Versuch der systematischen Darstellung der symbolischen Bildwelt in Xinjiang und damit im weiteren Sinne auch als ein Versuch, das Xiyü-Kulturerbe zu bewahren, das angesichts des tiefgreifenden Wandels in China und der Go-West-Strategie des chinesischen Wirtschaftsprogramms, welches sich auf die weiten Westgebiete Chinas bezieht, in Gefahr geraten ist. Es muss ein Weg gefunden werden, Modernisierung und Tradition in Einklang zu bringen. Diese Studie beschreibt, analysiert und bewertet exemplarisch, wie sich Zeichen und Symbole des Wissens und der Kultur entlang der Seidenstraße in Xinjiang zwischen den östlichen und westlichen Kulturen vermischt haben, wie sie übertragen wurden und inwieweit die Xiyü-Kultur reflektiert, dass Xinjiang ein Treffpunkt zwischen östlichen und westlichen Einflüssen war. In der Annährung an dieses Forschungsziel werden drei Hauptfragen zusammengefasst: Erstens, was kann das Erfahrungsmodell der alten Seidenstraße zum Verständnis der kulturellen Entwicklung im heutigen Informationszeitalter beitragen? Zweitens, was bedeutet Vielfalt für die kulturelle Kommunikation in Xinjiang? Steigen die Medienereignisse der visuellen Kommunikation und die internationalen Einflüsse an? Drittens, wie kann Xinjiang die Chancen der Go-West-Strategie des chinesischen Wirtschaftsprogramms in einer zunehmend globalisierten Welt nutzen und in der zukünftigen weltwirtschaftlichen Entwicklung wieder Vitalität zeigen? Um sich auf diese Weise den Antworten zu nähern, verwendet diese Studie einen Ansatz, der eine kulturanthropologische Perspektive integriert. Auf Grundlage einer Feldstudie werden Eigenschaften der traditionellen visuellen Xiyü-Zeichen, ihre Bedeutung für die ethnischen Volksgruppen Xinjiangs und den kulturellen Austausch zwischen Europa und Asien diskutiert und der besondere Einfluss von Handel und Verkehrswegen aufgezeigt. Die visuellen Zeichenformen der Xiyü-Kultur wurden von der Zeit vor der Islamisierung bis hin zur heutigen islamischen Zeit dargestellt. Die Forschung zeigt, dass die Zeichen kein ortsgebundenes Kulturphänomen oder eine lokale Tradition sind, vielmehr werden sie von regionalen, nationalen und internationalen Kulturkreisen bewusst oder unbewusst beeinflusst. Sie sind ein Ergebnis kultureller Kommunikation. Schließlich setzt sich die Studie mit den Zeichen der Xiyü-Kultur Xinjiangs in Relation mit der Go-West-Strategie der chinesischen Regierung auseinander. Die wirtschaftliche Entwicklung bringt für Xinjiang nicht nur Modernisierung und Wohlstand, sondern auch ein kulturelles und ökologisches Ungleichgewicht. Der Mensch strukturiert alles, was er in seiner Umgebung wahrnimmt, mit Zeichen. Die Xiyü-Zeichen schaffen eine visuelle Strukturierung. Die Xiyü-Kultur hat nach wie vor Einfluss auf die Lebensweise der ethnischen Gruppen in Xinjiang. Heute hat die Konfrontation zwischen der traditionellen Xiyü-Kultur und der wirtschaftlichen Entwicklung zu einem ernsthaften Konflikt in Xinjiang geführt. Diese Studie versteht sich als eine kritische Interpretation der aktuellen Situation der Xiyü-Kultur bzw. des chinesischen Wirtschaftsprogramms in Xinjiang. Sie will darüber hinaus einen Beitrag leisten zur Analyse der bislang nur unzureichend erfassten Wechselwirkungen zwischen Geschichte, Kultur, Politik und Wirtschaft in der kulturellen Globalisierung in Xinjiang. KW - Seidenstraße KW - Xiyü-Kultur KW - symbolische Bildwelt KW - Seidenstraße KW - Xiyü-Kultur KW - Kulturaustausch Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150225-23553 ER - TY - THES A1 - Rohde, Theres T1 - Die Bau-Ausstellung zu Beginn des 20. Jahrhunderts oder "Die Schwierigkeit zu wohnen" N2 - Die Bau-Ausstellung zu Beginn des 20. Jahrhunderts oder „Die Schwierigkeit zu wohnen“, so lautet der Titel der Arbeit und legt damit ihren Fokus offen. Sie betrachtet ein um 1900 aufkommendes Ausstellungsphänomen in seinen ersten Dekaden; in einer Zeit, in der das Wohnen problematisiert wurde. Der Praxis des Wohnens ist Anfang des 20. Jahrhunderts seine Selbstverständlichkeit abgesprochen worden. Die Bau-Ausstellung wird als ein Symptom dieses Verlusts interpretiert und zugleich als Versuch, ihm entgegenzuwirken. Statt sie innerdisziplinär als eine architekturgeschichtliche Episode der Moderne rein positivistisch zu beschreiben, legt die vorliegende Arbeit im Typus der Bau-Ausstellung eine weit reichende Problematik frei, die kulturphilosophische ebenso wie medientheoretische Dimensionen hat: Inwieweit lässt sich das Wohnen überhaupt ausstellen? Wie kann man eine alltägliche Praxis, die kaum eine Definition erlaubt, zeigen? Den Umgang mit dieser Aporie untersucht die Arbeit. KW - Architektur KW - Ausstellung KW - Wohnen KW - Architekturgeschichte KW - Architektur der Moderne KW - Ausstellungstheorie KW - Designgeschichte Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150811-24425 ER - TY - JOUR A1 - Nanthakumar, S.S. A1 - Lahmer, Tom A1 - Zhuang, Xiaoying A1 - Zi, Goangseup A1 - Rabczuk, Timon T1 - Detection of material interfaces using a regularized level set method in piezoelectric structures JF - Inverse Problems in Science and Engineering N2 - Detection of material interfaces using a regularized level set method in piezoelectric structures KW - Angewandte Mathematik KW - Stochastik KW - Strukturmechanik Y1 - 2015 ER - TY - CHAP A1 - Jahr, Katrin A1 - Schlich, Robert A1 - Dragos, Kosmas A1 - Smarsly, Kay ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - DECENTRALIZED AUTONOMOUS FAULT DETECTION IN WIRELESS STRUCTURAL HEALTH MONITORING SYSTEMS USING STRUCTURAL RESPONSE DATA T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - Sensor faults can affect the dependability and the accuracy of structural health monitoring (SHM) systems. Recent studies demonstrate that artificial neural networks can be used to detect sensor faults. In this paper, decentralized artificial neural networks (ANNs) are applied for autonomous sensor fault detection. On each sensor node of a wireless SHM system, an ANN is implemented to measure and to process structural response data. Structural response data is predicted by each sensor node based on correlations between adjacent sensor nodes and on redundancies inherent in the SHM system. Evaluating the deviations (or residuals) between measured and predicted data, sensor faults are autonomously detected by the wireless sensor nodes in a fully decentralized manner. A prototype SHM system implemented in this study, which is capable of decentralized autonomous sensor fault detection, is validated in laboratory experiments through simulated sensor faults. Several topologies and modes of operation of the embedded ANNs are investigated with respect to the dependability and the accuracy of the fault detection approach. In conclusion, the prototype SHM system is able to accurately detect sensor faults, demonstrating that neural networks, processing decentralized structural response data, facilitate autonomous fault detection, thus increasing the dependability and the accuracy of structural health monitoring systems. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-28031 SN - 1611-4086 ER - TY - CHAP A1 - Mueller, Matthias A1 - Ludwig, Horst-Michael A1 - Schulte-Schrepping, Christoph A1 - Breitenbücher, Rolf ED - Ludwig, Horst-Michael T1 - Dauerhafte Betonfahrbahndecken durch Verwendung unterschiedlicher Bindemittel in Ober- und Unterbeton T2 - Tagungsband 19. Ibausil - 19. Internationale Baustofftagung, 16. - 18.09.2015, Weimar. Band 2 N2 - Gemäß dem Regelwerk für Betonstraßen muss für zweischichtige Betonfahrbahndecken derselbe Zement in Ober- und Unterbeton verwendet werden. Weiterhin ist die Anrechnung von Flugasche auf den w/z-Wert nicht gestattet. Durch eine flexiblere Handhabung der Bindemittel könnten sich Vorteile für die Betonbauweise ergeben. So könnte z.B. der stärker durch Frost beanspruchte Oberbeton mit CEM I hergestellt werden, während Zemente mit höheren Hüttensandgehalten nur im Unterbeton angewendet werden. Im Unterbeton könnten dann Gesteinskörnungen eingesetzt werden, die in einer herkömmlichen CEM I-Rezeptur als AKR-kritisch eingestuft würden. Anhand von AKR-Performance-Prüfungen konnte die hohe Wirksamkeit hüttensandhaltiger Zemente sowie auch von Flugasche auf die AKR-Verminderung aufgezeigt werden. Schon mit einem CEM II/B-S wurden AKR-kritische Rezepturen in den unkritischen Bereich verschoben. Der Frost-Tausalz-Widerstand der Betone wurde bei hohen Gehalten an Hüttensand bzw. Hüttensand + Flugasche verringert, bewegte sich aber in jedem Fall noch im günstigen Bereich. Um eine Beeinträchtigung der baupraktischen Umsetzbarkeit zu vermeiden, sollte sich die Festigkeitsentwicklung von Ober- und Unterbeton im jungen Alter nicht zu stark unterscheiden. Modellberechnungen zur Festlegung einer Mindestfestigkeit für die frühe Belastung sind derzeit noch in Bearbeitung. KW - Beton KW - Betonstraße KW - Zementart KW - Alkali-Kieselsäure-Reaktion Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20240507-48711 SN - 978-3-00-050225-5 (Bauhaus-Universitätsverlag Weimar) ER - TY - THES A1 - Kloke, Christina Anna T1 - Das Manifest als Medium der Rezeptionssteuerung im Architektur- und Designdiskurs T1 - The manifesto as an instrument of the systematic control of reception in the architecture and design discourse N2 - In der vorliegenden Arbeit werden Manifestäußerungen des Design- und Architekturdiskurses im situativen, medialen, institutionellen und historischen Kontext untersucht. Auf Grundlage einer Analyse der Etymologie und der Ideengeschichte des Manifestes wird anhand ausgewählter Beispiele die These belegt, dass das Medium vor allem der gezielten Rezeptionssteuerung im Diskurs dient. Darüber hinaus wird die Fähigkeit und Bedeutung des Manifestes als Spiegel vergangener und gegenwärtiger, aber auch als Wegbereiter zukünftiger Diskurse analysiert und Entwicklungen des Manifestes hinsichtlich Stilistik, Inhalt, Funktion und Bedeutung im Design- und Architekturdiskurs dargestellt. N2 - This study examines manifestos from the design and architecture discourse in their situational, media, institutional and historical context. Based on an etymological analysis and on the manifesto’s history of ideas, the thesis uses selected examples to describe the manifesto as an instrument of the systematic control of reception in the discourse. In addition, the ability of the manifesto to mirror past and present discourses as well as to shape future discourses is shown. Also, the evolution of the manifesto regarding style, content, function and historical meaning will be analyzed. KW - Manifest KW - Rezeption KW - Architektur KW - Rezeptionssteuerung KW - Manifesto KW - Reception KW - architecture Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150702-24284 UR - http://e-pub.uni-weimar.de/opus4/frontdoor/index/index/docId/2415 N1 - Das Dokument wurde mit Ergänzungen neu veröffentlicht. Das Originaldokument wurde zurückgezogen (siehe weiterführender Link). ER - TY - THES A1 - Kloke, Christina Anna T1 - Das Manifest als Medium der Rezeptionssteuerung im Architektur- und Designdiskurs T1 - The manifesto as a tool of reception control in architecture and design discourse. N2 - In der vorliegenden Arbeit werden Manifestäußerungen des Design- und Architekturdiskurses im situativen, medialen, institutionellen und historischen Kontext untersucht. Auf Grundlage einer Analyse der Etymologie und der Ideengeschichte des Manifestes wird anhand ausgewählter Beispiele die These belegt, dass das Medium vor allem der gezielten Rezeptionssteuerung im Diskurs dient. Darüber hinaus wird die Fähigkeit und Bedeutung des Manifestes als Spiegel vergangener und gegenwärtiger, aber auch als Wegbereiter zukünftiger Diskurse analysiert und Entwicklungen des Manifestes hinsichtlich Stilistik, Inhalt, Funktion und Bedeutung im Design- und Architekturdiskurs dargestellt. N2 - This study examines manifestos from the design and architecture discourse in their situational, media, institutional and historical context. Based on an etymological analysis and on the manifesto’s history of ideas, the thesis uses selected examples to describe the manifesto as an instrument of the systematic control of reception in the discourse. In addition, the ability of the manifesto to mirror past and present discourses as well as to shape future discourses is shown. Also, the evolution of the manifesto regarding style, content, function and historical meaning will be analyzed. KW - Manifest KW - Rezeption KW - Architektur KW - Architecture KW - Manifesto KW - reception KW - Rezeptionssteuerung Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150623-24151 UR - http://e-pub.uni-weimar.de/opus4/frontdoor/index/index/docId/2428 N1 - Das Originaldokument wurde zurückgezogen. Das Dokument wurde mit Ergänzungen neu veröffentlicht(siehe weiterführender Link). ER - TY - CHAP A1 - König, Reinhard ED - Martens, Bob ED - Wurzer, G, Gabriel ED - Grasl, Tomas ED - Lorenz, Wolfgang ED - Schaffranek, Richard T1 - CPlan: An Open Source Library for Computational Analysis and Synthesis T2 - 33rd eCAADe Conference N2 - Some caad packages offer additional support for the optimization of spatial configurations, but the possibilities for applying optimization are usually limited either by the complexity of the data model or by the constraints of the underlying caad system. Since we missed a system that allows to experiment with optimization techniques for the synthesis of spatial configurations, we developed a collection of methods over the past years. This collection is now combined in the presented open source library for computational planning synthesis, called CPlan. The aim of the library is to provide an easy to use programming framework with a flat learning curve for people with basic programming knowledge. It offers an extensible structure that allows to add new customized parts for various purposes. In this paper the existing functionality of the CPlan library is described. KW - Architektur KW - Computer KW - CAAD KW - cplan KW - CAD Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20160118-25037 SP - 245 EP - 250 PB - Vienna University of Technology CY - Vienna ER - TY - JOUR A1 - Areias, Pedro A1 - Rabczuk, Timon A1 - Queiros de Melo, F. J. M. A1 - Cesar de Sa, J.M. T1 - Coulomb frictional contact by explicit projection in the cone for _nite displacement quasi-static problems JF - Computational Mechanics N2 - Coulomb frictional contact by explicit projection in the cone for _nite displacement quasi-static problems KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 57 EP - 72 ER - TY - JOUR A1 - Zhao, Jun-Hua A1 - Lu, Lixin A1 - Zhang, Zhiliang A1 - Guo, Wanlin A1 - Rabczuk, Timon T1 - Continuum modeling of the cohesive energy for the interfaces between _lms, spheres, coats and substrates JF - Computational Materials Science N2 - Continuum modeling of the cohesive energy for the interfaces between _lms, spheres, coats and substrates KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 432 EP - 438 ER - TY - JOUR A1 - Talebi, Hossein A1 - Silani, Mohammad A1 - Rabczuk, Timon T1 - Concurrent Multiscale Modelling of Three Dimensional Crack and Dislocation Propagation JF - Advances in Engineering Software N2 - Concurrent Multiscale Modelling of Three Dimensional Crack and Dislocation Propagation KW - Angewandte Mathematik KW - Strukturmechanik Y1 - 2015 SP - 82 EP - 92 ER - TY - THES A1 - Sucker, Katharina T1 - Communities in discourse and space. Towards a spatial dialectic in gated residential developments T1 - Diskurse der Identität auf dem Immobilienmarkt. Eine Untersuchung anhand von Gated Communities in Istanbul. N2 - This research projects deals with the discoursivity of spatial production. By looking at contemporary residential development in the city of Istanbul, I will examine the reciprocity of the material production of space on one hand, and social discourses on the other, in order to make a contribution to how physical space can be used as a source of research in urban studies. In real estate marketing social discourses are used as a source of reference for place branding or identity design. Branding concepts therefore relate to how social groups imagine their position or future position in society, imaginaries that are continuously influenced and changed by social dynamics within the city but also from the outside. How such urban identities are formed and it what way they relate to the urban environment is crucial to a wide spectrum of social and cultural science. The constitutive role urban space attains has been described and analysed in much detail. Such scrutiny however has yet to be applied to the visual and communicative forms of engagement, the build environment partakes in the formation and change of social discourses. N2 - Diese Dissertation setzt sich mit den Mechanismen diskursiver Stadtproduktion auseinander. Anhand einer Analyse aktueller Wohnbauprojekte in Istanbul wird untersucht, wie materielle Stadtproduktion auf der einen Seite und gesellschaftliche Diskurse auf der anderen ineinandergreifen, sich gegenseitig bedingen und beeinflussen. Gesellschaftsdiskurse tauchen im Stadtmarketing als Diskurse urbaner Identität auf. Sie stehen in engem Bezug zu einer idealisierten Vorstellung der eigenen gesellschaftlichen Position, werden aber auch durch Bewertungen von außen geprägt und verändert. Die Formation solcher Identitäten im Bereich des Stadtmarketing sowie ihre räumliche Umsetzung in Prozessen der Stadtproduktion ist von zentralem Interesse in der Stadtsoziologie. Die konstituierende Bedeutung des Raumes ist dabei weitestgehend erforscht worden, nicht jedoch die verändernde Wirkung, die städtischer Raum auf gesellschaftliche Diskurse hat - und umgekehrt. Dieser Komponente soll sich das vorliegende Forschungsvorhaben widmen. KW - architecture KW - gated community KW - discourse analysis KW - Istanbul KW - Architektur Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20150206-23466 ER - TY - JOUR A1 - Bargstädt, Hans-Joachim T1 - Challenges of BIM for Construction Site Operations JF - Procedia Engineering N2 - Building Information Modeling is a powerful tool for the design and for a consistent set of data in a virtual storage. For the application in the phases of realization and on site it needs further development. The paper describes main challenges and main features, which will help the development of software to better service the needs of construction site managers KW - Building Information Modeling KW - Baustelle KW - BIM; Building Information Modeling; site management; construction site. Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170413-31218 SP - 52 EP - 59 ER - TY - CHAP A1 - Alalade, Muyiwa A1 - Kafle, Binod A1 - Wuttke, Frank A1 - Lahmer, Tom ED - Gürlebeck, Klaus ED - Lahmer, Tom T1 - CALIBRATION OF CYCLIC CONSTITUTIVE MODELS FOR SOILS BY OSCILLATING FUNCTIONS T2 - Digital Proceedings, International Conference on the Applications of Computer Science and Mathematics in Architecture and Civil Engineering : July 20 - 22 2015, Bauhaus-University Weimar N2 - In order to minimize the probability of foundation failure resulting from cyclic action on structures, researchers have developed various constitutive models to simulate the foundation response and soil interaction as a result of these complex cyclic loads. The efficiency and effectiveness of these model is majorly influenced by the cyclic constitutive parameters. Although a lot of research is being carried out on these relatively new models, little or no details exist in literature about the model based identification of the cyclic constitutive parameters. This could be attributed to the difficulties and complexities of the inverse modeling of such complex phenomena. A variety of optimization strategies are available for the solution of the sum of least-squares problems as usually done in the field of model calibration. However for the back analysis (calibration) of the soil response to oscillatory load functions, this paper gives insight into the model calibration challenges and also puts forward a method for the inverse modeling of cyclic loaded foundation response such that high quality solutions are obtained with minimum computational effort. Therefore model responses are produced which adequately describes what would otherwise be experienced in the laboratory or field. KW - Angewandte Informatik KW - Angewandte Mathematik KW - Building Information Modeling KW - Computerunterstütztes Verfahren KW - Data, information and knowledge modeling in civil engineering; Function theoretic methods and PDE in engineering sciences; Mathematical methods for (robotics and) computer vision; Numerical modeling in engineering; Optimization in engineering applications Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:gbv:wim2-20170314-27932 SN - 1611-4086 ER -