@inproceedings{Molkenthin2000,
  author    = {Molkenthin, Frank},
  title     = {WWW based Simulation Systems and Project Platforms in Civil Engineering},
  doi       = {10.25643/bauhaus-universitaet.597},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5972},
  year      = {2000},
  abstract  = {The availability of the WWW technology and the introduction of the Internet as basic resource like water, electricity or gas changes dramatically normal live, business and of course civil engineering. New technologies enable innovative technical solutions and offer new potential for improvements towards support of humans nature appropriate ways of working. This demands a new culture of work and collaboration. To contribute to theses challenges is a matter the discipline 'Bauinformatik' by supporting related research, development, education and training in civil engineering. This contribution to the IKM Conference 2000 in Weimar sketches selected research and education activities of the institutes of the authors on the topics of WWW based simulation systems (example WEASEL) and of WWW based project platforms (projects MorWin and TaiGer as well as an European education experiment). Both topics supports the collaboration by new ways of tele cooperation in international, heterogeneous and interdisciplinary engineering. Demonstration from this developments and projects will be used to illustrate the dimension of changes in civil engineering in due to modern ICT.},
  subject      = {Bauwesen},
  language  = {en}
}
@inproceedings{KuwataShinozaki2000,
  author    = {Kuwata, Hitoshi and Shinozaki, M.},
  title     = {Web-based System for Visualization of Distribution Patterns of Solar Energy and Sky Factor on Outdoor Open Spaces},
  doi       = {10.25643/bauhaus-universitaet.602},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6026},
  year      = {2000},
  abstract  = {This study aims at constructing the simulation system of distribution patterns of solar irradiance, sunshine duration and sky factor with the user-friendly interface and sharing this system with users on the Internet. The characteristics of this simulation system are as follows: (1) Web-based user interface, (2) Accessible system through the Internet and (3) Sunlight and skylight simulation based on physically accurate equations with considering various sky conditions and the reflection from the surface of objects. As a case study, impact of the development plans are analyzed and evaluated using this system. Solar irradiance, sunshine duration and sky factor are calculated at the surface of the buildings and open spaces every 10 minutes from 8 to 16 on the winter solstice. The values of these indices are expressed as the ratio to those calculated under the condition with no buildings. In conclusion, this web-based simulation system can be useful for visualizing the sunlight and skylight conditions on outdoor open spaces and the surface of the buildings to evaluate development plans objectively. Users can make access to the system from almost all of the computers connected with the Internet and modify parameters by themselves to get desirable results. Further improvement of the user interface is necessary using more advanced technology of CGI, Java and JavaScript.},
  subject      = {Sonnenstrahlung},
  language  = {en}
}
@article{SteinmannHuebler1997,
  author    = {Steinmann, Frank and H{\"u}bler, Reinhard},
  title     = {Vorgehensmodelle als Basis der Gestaltung durchgaengiger CAD-Systeme},
  doi       = {10.25643/bauhaus-universitaet.456},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4568},
  year      = {1997},
  abstract  = {F{\"u}r die Gestaltung einer durchg{\"a}ngigen Unterst{\"u}tzung des Entwurfsprozesses stehen gegenw{\"a}rtig deskriptive Modelle der Entwurfsobjekte im Mittelpunkt der Untersuchungen. Diese Modelle gestatten das Ableiten von Repr{\"a}sentationen sowie eine Weitergabe von Entwurfsergebnissen. Pragmatische Gliederungen des Entwurfsprozesses unterteilen diesen nach organisatorischen und betriebswirtschaftlichen Aspekten (Planbarkeit und Abrechenbarkeit) in eine Sequenz von Entwurfsphasen (HOAI). Diese Gliederungen ber{\"u}cksichtigen nicht das WIE des eigentlichen modellkreierenden Schaffensprozesses. F{\"u}r ein echtes CADesign bildet dessen Kl{\"a}rung jedoch die erforderliche Voraussetzung. Im Beitrag wird dazu von einem vereinheitlichten Set generischer Entwurfsaktionen ausgegangen. Auch dann, wenn die verschiedenen Entwurfsphasen und die Entwurfshandlungen der einzelnen Ingenieurgewerke mit spezifische Entwurfsmodellen verbunden werden, besteht damit eine Grundlage zur methodischen Fundierung entsprechender CAD-Tools. Die methodische Verfahrensweise {\"a}hnelt der, die in Form von Styleguides zur Gestaltung von 'Graphical User Interfaces' vorgeschlagen wird. Wesentliche praktische Benutzungen solche Basisaktivit{\"a}ten ergeben sich f{\"u}r: die Systematisierung computergest{\"u}tzter Entwurfshandlungen, insbesondere durch Erweiterung des deskriptiven um ein operationales Modell sowie deren erweiterte Interpretierbarkeit die Erzeugung wissensbasierter Werkzeuge zur automatischen Modellgenerierung/-konfiguration die Implementation von leistungsf{\"a}higen UNDO- bzw. TMS-Mechanismen.},
  subject      = {CAD},
  language  = {de}
}
@inproceedings{ThurowDonathPetzold2003,
  author    = {Thurow, Torsten and Donath, Dirk and Petzold, Frank},
  title     = {Vision eines mitwachsenden Geometriemodells f{\"u}r die computergest{\"u}tzte Bauaufnahme},
  doi       = {10.25643/bauhaus-universitaet.365},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3655},
  year      = {2003},
  abstract  = {Die digitale Unterst{\"u}tzung der Planungsprozesse ist ein aktueller Forschungs- und Arbeitsschwerpunkt der Professur Informatik in der Architektur (InfAR) und der Juniorprofessur Architekturinformatik der Fakult{\"a}t Architektur an der Bauhaus-Universit{\"a}t Weimar. Verankert in dem DFG Sonderforschungsbereich 524 >Werkzeuge und Konstruktionen f{\"u}r die Revitalisierung von Bauwerken< entstehen Konzepte und Prototypen f{\"u}r eine fachlich orientierte Planungsunterst{\"u}tzung. Als ein Teilaspekt wird in diesem Beitrag die Vision eines mitwachsenden Geometriemodells f{\"u}r das computergest{\"u}tzte Bauaufmaß gezeigt, welches den Aufnehmenden von der Erstbegehung an begleitet. Die bei jeder Phase der Bauaufnahme gewonnenen Geometrieinformationen sollen in den anschließenden Phasen wiederverwendet, konkretisiert bzw. korrigiert werden. Aufmaßtechniken und Geometriemodell sind dabei eng gekoppelt. Verschiedene Sichten auf ein gemeinsames Geometriemodell haben zum Ziel, den Nutzer die Vorteile planarer Abbildungen nutzen zu lassen, ohne die dreidimensionale {\"U}bersicht zu verlieren oder entsprechende r{\"a}umliche Manipulationen zu missen. Das Geometriemodell ist dabei in ein dynamisches Bauwerksmodell eingebettet. Der folgende Beitrag bezieht sich auf die Bauaufnahme mit folgenden Vorgaben: - die Bauaufnahme dient der Vorbereitung der Bauplanung im Bestand - es wird nur eine Genauigkeitsstufe (im Bereich von +/- 10 cm) unterst{\"u}tzt - die Geometrieabbildung des aufzunehmenden Bauwerkes beruht ausschließlich auf ebenen Oberfl{\"a}chen},
  subject      = {Bauaufnahme},
  language  = {de}
}
@phdthesis{Janke,
  author    = {Janke, Lars},
  title     = {Tragverhalten von Betondruckgliedern mit vorgespannter Umschn{\"u}rung aus Formged{\"a}chtnislegierungen, Stahl oder faserverst{\"a}rkten Kunststoffen},
  doi       = {10.25643/bauhaus-universitaet.2326},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20141023-23262},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {180},
  abstract  = {Druckbeanspruchte Bauteile aus Beton k{\"o}nnen mit zugfesten Umschn{\"u}rungen von außen verst{\"a}rkt werden. Mit dieser etablierten Methode konnten axiale Traglast und Duktilit{\"a}t von unzureichend bewehrten St{\"u}tzen bereits verbessert werden. Es wurde jedoch festgestellt, dass der umschn{\"u}rte Betonkern dennoch an Festigkeit verliert. Um die Wirksamkeit der Umschn{\"u}rung zu erh{\"o}hen, wird deshalb vorgeschlagen, das umschn{\"u}rende Material vorzuspannen. Dieser Vorschlag wird insbesondere von der neuen Materialgruppe der Formged{\"a}chtnislegierungen inspiriert, die thermisch vorspannbar sind. Bisher sind die Auswirkungen der Vorspannung einer Umschn{\"u}rung auf das Tragverhalten von Betondruckgliedern kaum untersucht worden. Diese L{\"u}cke wird durch systematische Versuche an Betonzylindern mit vorgespannter Umschn{\"u}rung aus Stahl und kohlenstofffaserverst{\"a}rktem Kunststoff geschlossen. Die Abbildung der Versuchsergebnisse durch geeignete Modelle erm{\"o}glicht auch Aussagen zum Verhalten von Betondruckgliedern mit Umschn{\"u}rungen aus anderen Materialien, beispielsweise Formged{\"a}chtnislegierungen. Um diese in den Berechnungen zu simulieren, wird eine f{\"u}r das Bauwesen infrage kommende eisenbasierte Legierung in separaten axialen Versuchen charakterisiert und thermisch vorgespannt. Die in der vorliegenden Arbeit entwickelten neuen Modelle orientieren sich im Wesentlichen an zwei Zielen: dem Abbilden des mehraxialen Spannungs-Dehnungs-Verhaltens des vorgespannt umschn{\"u}rten Betons und dem Berechnen der Restfestigkeit des Betons. Die durchgef{\"u}hrten Versuche und Parameterstudien auf Basis der Modelle zeigen: Die Vorspannung der Umschn{\"u}rung beeinflusst vor allem die Restfestigkeit des Betons wesentlich. Die gewonnenen Erkenntnisse und neuen Methoden k{\"o}nnen eingesetzt werden, um das Tragverhalten von Betondruckgliedern mit Umschn{\"u}rungen aus Stahl, faserverst{\"a}rktem Kunststoff oder Formged{\"a}chtnislegierungen zu bewerten.},
  subject      = {Beton},
  language  = {de}
}
@inproceedings{BoukampAkinci2004,
  author    = {Boukamp, Frank and Akinci, Burcu},
  title     = {Towards Automated Defect Detection: Object-oriented Modeling of Construction Specifications},
  doi       = {10.25643/bauhaus-universitaet.131},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1315},
  year      = {2004},
  abstract  = {This paper describes an ongoing research on the representation and reasoning about construction specifications, which is part of a bigger research project that aims at developing a formalism for automating the identification of deviations and defects on construction sites. We specifically describe the requirements on product and process models and an approach for representing and reasoning about construction specifications to enable automated detection and assessment of construction deviations and defects. This research builds on the previous research on modeling design specifications and extends and elaborates concept of contexts developed in that domain. The paper provides an overview of how the construction specifications are being modele d in this research and points out future steps that need to be accomplished to develop the envisioned automated deviation and defect detection system.},
  subject      = {Bauwerk},
  language  = {en}
}
@article{MinchTrochanowski1997,
  author    = {Minch, M. J. and Trochanowski, A.},
  title     = {The numerical Modelling and Analysis of RC cracked Structures},
  doi       = {10.25643/bauhaus-universitaet.527},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5278},
  year      = {1997},
  abstract  = {The purpose of this paper is to review model for finite element techniques for non-linear crack analysis of reinforced concrete beams and slabs. The non-linear behaviour of concrete and steel were described. Some calculations of >self-stress< for concrete and reinforced concrete beam was made. Current computational aspects are discussed. Several remarks for future studies are also given. The numerical model of the concrete and reinforced concrete was described. The paper shows the results of calculations on a reinforced concrete plane stress panel with cracks. The non-linear, numerical model of calculations of reinforced concrete was assumed. Using finite elements method some calculations were made. The results of calculations like displacements, stresses and cracking are shown on diagrams. They were compared with experimental results and other finding. Some conclusions about the described model and results of calculation are shown.},
  subject      = {Tragwerk},
  language  = {en}
}
@article{KazakevitchKulyabkoDubichvost1997,
  author    = {Kazakevitch, M. I. and Kulyabko, V. V. and Dubichvost, A. A.},
  title     = {The discrete dynamic Models of the Interaction of complex - composite Structures with the dynamic Loads},
  doi       = {10.25643/bauhaus-universitaet.521},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5219},
  year      = {1997},
  abstract  = {In the given paper the generalized formulation of the problem of computer modelling of the complex-composite structure interaction with different types of dynamic loads and effects is discussed. Here the analysis is given as for the usage of some universal computing systems for the solution of such problems. Also if is shown that the quantification of the dynamic models of the complex-composite systems with the variable structure, depending on the character and intensivity of the effects, is necessary. The different variants of the joint and the space structure element modelling are gested. It allows to consider the complex modes of the joint bending-torsional oscillations of such structures as bridges, towers, high-rise buildings. The peculiarities of the modelling and testing of some problems of the objects aerodynamics and the interaction of the frameworks constructions with shock and movable loads are considered. In this paper the examples of the complex-composite structure dynamic analysis are shown. It is achieved by means of some special methods of the input of the real inducements and loads of the exploitated analog-object into the computing model. The suggested models found a wide use both at the design of new structures and the dynamic monitoring of the exploitated structures.},
  subject      = {Verbundtragwerk},
  language  = {en}
}
@inproceedings{Vasilkov2003,
  author    = {Vasilkov, Dmitry M.},
  title     = {Surface design based upon a combined mesh},
  doi       = {10.25643/bauhaus-universitaet.367},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3671},
  year      = {2003},
  abstract  = {The subject of this talk is the problem of surface design based upon a mesh that may contain both triangular and quadrangular domains. We investigate the cases when such a combined mesh occurs more preferable for bivariate data interpolation than a pure triangulation. First we describe a modification of the well-known flipping algorithm that constructs a locally optimal combined mesh with a predefined quality criterion. Then we introduce two quality measures for triangular and quadrangular domains and present the results of a computational experiment that compares integral interpolation errors and errors in gradients caused by the piecewise surface models produced by the flipping algorithm with the introduced quality measures. The experiment shows that triangular meshes with the Delaunay quality measure provide better interpolation accuracy only if the interpolated function is strictly convex, as well as a saddle-shaped function is better interpolated by bilinear patches within a combined mesh. For a randomly shaped function combined meshes demonstrate smaller error values and better stability in compare with pure triangulations. At the end we consider other resources for mesh improvement, such as excluding >bad< points from the input set for the mesh generating procedure. Because the function values at these points should not be lost, some linear or bilinear patches are replaced by nonlinear patches that pass through the excluded points.},
  subject      = {Oberfl{\"a}che},
  language  = {en}
}
@inproceedings{AldaCremersBilek2004,
  author    = {Alda, Sascha and Cremers, Armin B. and Bilek, Jochen},
  title     = {Support of Collaborative Structural Design Processes through the Integration of Peer-to-Peer and Multiagent Architectures},
  doi       = {10.25643/bauhaus-universitaet.148},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1481},
  year      = {2004},
  abstract  = {Structural engineering projects are increasingly organized in networked cooperations due to a permanently enlarged competition pressure and a high degree of complexity while performing the concurrent design activities. Software that intends to support such collaborative structural design processes implicates enormous requirements. In the course of our common research work, we analyzed the pros and cons of the application of both the peer-to-peer (University of Bonn) and multiagent architecture style (University of Bochum) within the field of collaborative structural design. In this paper, we join the benefits of both architecture styles in an integrated conceptual approach. We demonstrate the surplus value of the integrated multiagent-peer-to-peer approach by means of an example scenario in which several structural engineers are co-operatively designing the basic structural elements of an arched bridge, applying heterogeneous CAD systems.},
  subject      = {Ingenieurbau},
  language  = {en}
}
@article{Fink2004,
  author    = {Fink, Thomas},
  title     = {Structural analysis, design and detailing using standard CAD software and standard building information model},
  doi       = {10.25643/bauhaus-universitaet.270},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2702},
  year      = {2004},
  abstract  = {This paper describes the concept of a german commercial software package developed for the needs of structural engineers. Using a standard CAD software as user interface for all geometrical data and to save all important input data, there is a natural link to upcoming building information models.},
  subject      = {Bauindustrie},
  language  = {en}
}
@phdthesis{Chan,
  author    = {Chan, Chiu Ling},
  title     = {Smooth representation of thin shells and volume structures for isogeometric analysis},
  doi       = {10.25643/bauhaus-universitaet.4208},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200812-42083},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {162},
  abstract  = {The purpose of this study is to develop self-contained methods for obtaining smooth meshes which are compatible with isogeometric analysis (IGA). The study contains three main parts. We start by developing a better understanding of shapes and splines through the study of an image-related problem. Then we proceed towards obtaining smooth volumetric meshes of the given voxel-based images. Finally, we treat the smoothness issue on the multi-patch domains with C1 coupling. Following are the highlights of each part. First, we present a B-spline convolution method for boundary representation of voxel-based images. We adopt the filtering technique to compute the B-spline coefficients and gradients of the images effectively. We then implement the B-spline convolution for developing a non-rigid images registration method. The proposed method is in some sense of "isoparametric", for which all the computation is done within the B-splines framework. Particularly, updating the images by using B-spline composition promote smooth transformation map between the images. We show the possible medical applications of our method by applying it for registration of brain images. Secondly, we develop a self-contained volumetric parametrization method based on the B-splines boundary representation. We aim to convert a given voxel-based data to a matching C1 representation with hierarchical cubic splines. The concept of the osculating circle is employed to enhance the geometric approximation, where it is done by a single template and linear transformations (scaling, translations, and rotations) without the need for solving an optimization problem. Moreover, we use the Laplacian smoothing and refinement techniques to avoid irregular meshes and to improve mesh quality. We show with several examples that the method is capable of handling complex 2D and 3D configurations. In particular, we parametrize the 3D Stanford bunny which contains irregular shapes and voids. Finally, we propose the B´ezier ordinates approach and splines approach for C1 coupling. In the first approach, the new basis functions are defined in terms of the B´ezier Bernstein polynomials. For the second approach, the new basis is defined as a linear combination of C0 basis functions. The methods are not limited to planar or bilinear mappings. They allow the modeling of solutions to fourth order partial differential equations (PDEs) on complex geometric domains, provided that the given patches are G1 continuous. Both methods have their advantages. In particular, the B´ezier approach offer more degree of freedoms, while the spline approach is more computationally efficient. In addition, we proposed partial degree elevation to overcome the C1-locking issue caused by the over constraining of the solution space. We demonstrate the potential of the resulting C1 basis functions for application in IGA which involve fourth order PDEs such as those appearing in Kirchhoff-Love shell models, Cahn-Hilliard phase field application, and biharmonic problems.},
  subject      = {Modellierung},
  language  = {en}
}
@inproceedings{HuebnerWalhornKoelke2003,
  author    = {H{\"u}bner, Bj{\"o}rn and Walhorn, Elmar and K{\"o}lke, Andreas},
  title     = {Simultane L{\"o}sung gekoppelter Struktur-Fluid-Systeme},
  doi       = {10.25643/bauhaus-universitaet.311},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3114},
  year      = {2003},
  abstract  = {Ein simultanes L{\"o}sungsverfahren f{\"u}r Fluid-Struktur-Wechselwirkungen aus dem Bereich des Bauingenieurwesens wird vorgestellt. Die Modellierung der Tragwerksdynamik erfolgt mit der geometrisch nichtlinearen Elastizit{\"a}tstheorie in total Lagrangescher Formulierung. Die Str{\"o}mung wird mit den inkompressiblen Navier-Stokes-Gleichungen beschrieben. Wenn Turbulenzeffekte massgeblich sind, kommen die Reynolds-Gleichungen in Verbindung mit dem k-omega-Turbulenzmodell von Wilcox zum Einsatz. Zur Beschreibung von komplexen freien Oberfl{\"a}chen wird die Level-Set-Methode eingesetzt. Die einheitliche Diskretisierung von Fluid und Struktur mit der Raum-Zeit-Finite-Element-Methode f{\"u}hrt zu einem konsistenten Berechnungsmodell f{\"u}r das gekoppelte System. Da die isoparametrischen Raum-Zeit-Elemente ihre Geometrie in Zeitrichtung {\"a}ndern k{\"o}nnen, erlaubt die Methode eine nat{\"u}rliche Beschreibung des infolge der Strukturbewegung zeitver{\"a}nderlichen Str{\"o}mungsgebiets. Die gewichtete Integralformulierung der Kopplungsbedingungen mit globalen Freiwerten f{\"u}r die Interface-Spannungen sichert eine konservative Kopplung von Fluid und Struktur. Ausgew{\"a}hlte Anwendungsbeispiele zeigen die Leistungsf{\"a}higkeit der entwickelten Methodik und belegen die guten Konvergenzeigenschaften des simultanen L{\"o}sungsverfahrens.},
  subject      = {Bauwerk},
  language  = {de}
}
@book{OPUS4-2182,
  title     = {Simulationsforum 2013 - Schweißen und W{\"a}rmebehandlung},
  editor    = {Hildebrand, J{\"o}rg and Loose, Tobias and Sakkiettibutra, Jens and Brand, Marcus},
  publisher = {F{\"o}rderverein W{\"a}rmebehandlung und Schweißen e.V.},
  address   = {Weimar},
  isbn      = {978-3-00-045902-3},
  doi       = {10.25643/bauhaus-universitaet.2182},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20140512-21820},
  pages     = {234},
  abstract  = {Das Buch ver{\"o}ffentlicht 22 Fachbeitr{\"a}ge der Konferenz "Simulationsforum 2013 - Schweißen und W{\"a}rmebehandlung".},
  subject      = {Schweißen},
  language  = {de}
}
@misc{Rahm2011,
  type      = {Master Thesis},
  author    = {Rahm, Tobias},
  title     = {Simulation von Kernprozessen eines Erddruckschildes},
  doi       = {10.25643/bauhaus-universitaet.1461},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20110909-15599},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2011},
  abstract  = {In dieser Arbeit wird der Vortriebsprozess einer Erddruckschildmaschine in einem Simulationsmodell mit Hilfe der System Dynamics modelliert. Nach einer Einf{\"u}hrung in den maschinellen Tunnelbau werden die Besonderheiten der Erddruckschildmaschine herausgestellt. Anschließend wird das betrachtete System mit dem Simulationskonzept der System Dynamics modelliert und in einem geeigneten Simulationstool implementiert.},
  subject      = {Simulation},
  language  = {de}
}
@article{ChubukovKapitanovMoninaetal.,
  author    = {Chubukov, A. and Kapitanov, Valeriy and Monina, Olga and Silyanov, Valentin and Brannolte, Ulrich},
  title     = {Simulation of Regional Mortality Rate in Road Accidents},
  series = {Transportation Research Procedia 20},
  journal   = {Transportation Research Procedia 20},
  doi       = {10.1016/j.trpro.2017.01.031},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170331-30956},
  pages     = {112 -- 124},
  abstract  = {The paper gives the results of scientific research, which, being based on probabilistic and statistical modeling, identifies the relationship of certain socio-economic factors and the number of people killed in road accidents in the Russian Federation regions. It notes the identity of processes in various fields, in which there is loss of life. Scientific methods and techniques were used in the process of data processing and study findings: systematic approach, methods of system analysis (algorithmization, mathematical programming) and mathematical statistics. The scientific novelty lies in the formulation, formalization and solving problems related to the analysis of regional road traffic accidents, its modeling taking into account the factors of socio-economic impact.},
  subject      = {Modellierung},
  language  = {en}
}
@inproceedings{LehnerHartmann2004,
  author    = {Lehner, Karlheinz and Hartmann, Dietrich},
  title     = {Scenarios for the deployment of distributed engineering applications},
  doi       = {10.25643/bauhaus-universitaet.147},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1476},
  year      = {2004},
  abstract  = {Although there are some good reasons to design engineering software as a stand-alone application for a single computer, there are also numerous possibilities for creating distributed engineering applications, in particular using the Internet. This paper presents some typical scenarios how engineering applications can benefit from including network capabilities. Also, some examples of Internet-based engineering applications are discussed to show how the concepts presented can be implemented.},
  subject      = {Ingenieurbau},
  language  = {en}
}
@inproceedings{Phirsof2000,
  author    = {Phirsof, Alexander},
  title     = {Research of special models describing technological processes},
  doi       = {10.25643/bauhaus-universitaet.607},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6072},
  year      = {2000},
  abstract  = {The technological processes, schedules, parallel algorithms, etc., having some technological limitations and exacting increases of efficiency of their execution can be described through digraphs, on which the appropriate optimization problem (construction of optimal scheduling of tops of digraph) can be solved. The problems, researched in the given operation, have a generally following statement: The problem 1: Under the given graph G and option value h to construct parallel scheduling of tops of digraph of minimum length. Let's designate the problem S(G, h, l). The problem 2: Under the given graph G and option value l to construct parallel scheduling of tops of digraph of minimum width. Let's designate the problem S(G, l, h). The problem 3: Under the given graph G, option value h and periods of execution of operations di, i=1, …, n to construct parallel scheduling of tops of digraph of minimum length. Let's designate the problem S(G, h, di, l). The problems 1,2,3 in a case when h-arbitrary have exponential complexity. In operation the method of solution of the problem S(T, h, di, l) is offered on the basis of choice of tops having greatest weight. The approach to solution of the problem S(G, 3, l) is offered, where G the graph satisfying property : S[i] =S [i], i=1, …, l. For obtaining a rating of width of scheduling on an available estimator of length, we offer to use iterative algorithm of polynomial complexity, on which each step the current value of width of scheduling is set, which is used for specification of length of scheduling.},
  subject      = {Ablaufplanung},
  language  = {en}
}
@article{KiviniemiFischer2004,
  author    = {Kiviniemi, Arto and Fischer, Martin},
  title     = {Requirements Management Interface to Building Product Models},
  doi       = {10.25643/bauhaus-universitaet.242},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2427},
  year      = {2004},
  abstract  = {In current AEC practice client requirements are typically recorded in a building program, which, depending on the building type, covers various aspects from the overall goals, activities and spatial needs to very detailed material and condition requirements. This documentation is used as the starting point of the design process, but as the design progresses, it is usually left aside and changes are made incrementally based on the previous design solution. These incremental small changes can lead to a solution that may no longer meet the original requirements. In addition, design is by nature an iterative process and the proposed solutions often also cause evolution in the client requirements. However, the requirements documentation is usually not updated accordingly. Finding the latest updates and evolution of the requirements from the documentation is very difficult, if not impossible. This process can lead to an end result, which is significantly different from the documented requirements. Some important requirements may not be satisfied, and even if the design process was based on agreed-upon changes in the scope and requirements, differences in the requirements documents and in the completed building can lead to well-justified doubts about the quality of the design and construction process...},
  subject      = {Produktmodell},
  language  = {en}
}
@inproceedings{WillenbacherHuebler2000,
  author    = {Willenbacher, Heiko and H{\"u}bler, Reinhard},
  title     = {Relationen zwischen Dom{\"a}nenmodellen Ansatz zur Schaffung einer integrierenden computergest{\"u}tzten Bauplanungsumgebung},
  doi       = {10.25643/bauhaus-universitaet.617},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6178},
  year      = {2000},
  abstract  = {Die zunehmend erforderliche Kooperation verschiedener Beteiligter unterschiedlicher Fachbereiche und der Einsatz hochspezialisierter Fachapplikationen in heterogenen Systemumgebungen unterstreichen die Bedeutung und Notwendigkeit neuer Konzepte und M{\"o}glichkeiten zur Schaffung einer computergest{\"u}tzten Integrationsebene. Ziel einer computergest{\"u}tzten Integrationsebene ist die Verbesserung der Kooperation und Kommunikation unter den Beteiligten. Grundlage daf{\"u}r ist die Etablierung eines effizienten und fehlerfreien Daten- und Informationsaustausches zwischen den verschiedenen Fachplanern und -applikationen. Die Basis f{\"u}r die Datenintegrationsebene bildet ein digitales Bauwerksmodell im Sinne eines >virtuellen Bauwerks<, welches alle relevanten Daten und Informationen {\"u}ber ein zu planendes oder real existierendes Bauwerk zur Verf{\"u}gung stellt. Bei der Verwirklichung einer Bauwerksmodell-orientierten Datenintegrationsebene und deren Modellverwaltung erweist sich speziell die Definition des Bauwerksmodells also die Spezifikation der relevanten auszutauschenden Daten als {\"a}ußerst komplex. Der hier vorzustellende Relationen-orientierte Ansatz, d.h. die Realisierung des Daten- und Informationsaustauschs mittels definierter Relationen und Beziehungen zwischen dynamisch modifizierbaren Dom{\"a}nenmodellen, bietet Ans{\"a}tze zur: * Verringerung und Beherrschung der Komplexit{\"a}t des Bauwerksmodells (Teilmodellbildung) * Realisierung eines effizienten Datenaustauschs (Relationenmanagement) Somit stellt der Relationenorientierte Ansatz einen ad{\"a}quaten L{\"o}sungsweg zur Modellierung eines digitalen Bauwerksmodells als Datenintegrationsebene f{\"u}r den Lebenszyklus eines Bauwerkes dar.},
  subject      = {Bauwesen},
  language  = {de}
}
@inproceedings{HubeWittwer2003,
  author    = {Hube, Werner and Wittwer, Christof},
  title     = {Pr{\"a}diktive W{\"a}rmeflussregelung solaroptimierter Wohngeb{\"a}ude - Thermische Simulation komplexer Geb{\"a}ude},
  doi       = {10.25643/bauhaus-universitaet.310},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3106},
  year      = {2003},
  abstract  = {Moderne Wohngeb{\"a}ude heute, besonders aber die der Zukunft, werden sich zu einem großen Teil selbst mit W{\"a}rme versorgen. Hierbei spielen Entwicklungen im Bereich der Fassadenkonstruktionen eine zentrale Rolle. Zum erh{\"o}hten solaren W{\"a}rmeeintrag kommen die Eigenschaften der W{\"a}rmespeicherung und verz{\"o}gerten W{\"a}rmeabgabe hinzu. Aufgrund dieser Eigenschaften definiert sich das Geb{\"a}udeverhalten neu und komplexer. Im Rahmen der Entwicklungen von W{\"a}rmeflussregelungen in solarthermisch beheizten Wohngeb{\"a}uden mit neuartigen Fassaden wird in diesem Beitrag auf die Modellentwicklung moderner Fassadenkonstruktionen hinsichtlich Transparenter W{\"a}rmed{\"a}mmung und Phasenwechselmaterialien im Wandverbund, kombiniert mit der regelungstechnisch interessanten Neuentwicklung von Verschattungseinrichtungen {\"u}ber schaltbare Schichten am Fenster, eingegangen. Der Beitrag beschreibt den Entwurf eines Regelungskonzeptes f{\"u}r die thermische Raumklimaregelung. Diese Untersuchungen basieren auf komplexen Simulationsmodellen, wobei bei der Modellentwicklung der neuartigen Fassadenelemente auf reale Messwerte zur{\"u}ckgegriffen werden konnte.},
  subject      = {Haus},
  language  = {de}
}
@inproceedings{Loemker2003,
  author    = {L{\"o}mker, Thorsten Michael},
  title     = {Plausibilit{\"a}t im Planungsprozess - Digitale Planungshilfen f{\"u}r die Bebaubarkeit von Grundst{\"u}cken},
  doi       = {10.25643/bauhaus-universitaet.329},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3296},
  year      = {2003},
  abstract  = {Die digitale Unterst{\"u}tzung der Planungsprozesse ist ein aktueller Forschungs- und Arbeitsschwerpunkt der Professur Informatik in der Architektur (InfAR) und der Juniorprofessur Architekturinformatik der Fakult{\"a}t Architektur an der Bauhaus-Universit{\"a}t Weimar. Verankert in dem DFG Sonderforschungsbereich 524 >Werkzeuge und Konstruktionen f{\"u}r die Revitalisierung von Bauwerken< werden Konzepte und Prototypen f{\"u}r eine fachlich orientierte Planungsunterst{\"u}tzung entwickelt. Die Vielfalt der unterschiedlichen Faktoren, die Einfluss auf den Planungsprozess nehmen k{\"o}nnen, sowie deren Abh{\"a}ngigkeiten voneinander werden von heutigen Planungssystemen in nur unzureichender Weise aufbereitet und verwaltet. Diese Faktoren bedingen Planungstools, deren Aufgabe die Beschaffung, Verarbeitung, Integration und Verwaltung von Informationen sowie die Veranschaulichung der komplexen Informationszusammenh{\"a}nge ist. Die Entwicklung solcher Systeme ist technisch m{\"o}glich. Die Schwierigkeit liegt in der Beschaffung und Strukturierung der f{\"u}r den Planungsprozess relevanten Informationen sowie in ihrer Aufbereitung und Integration in eine digitale Planungsumgebung. Das Bestreben des Forschungsprojektes ist es, Grundlagen f{\"u}r digitale Werkzeuge zu entwickeln die zu plausiblen L{\"o}sungen im Planungsprozess und somit zu erh{\"o}hter Planungssicherheit f{\"u}r die am Bau beteiligten Auftragnehmer und Auftraggeber f{\"u}hren. Es wird angestrebt Programm-Module zu entwickeln, die den Planer bei der Ermittlung von L{\"o}sungswegen zu einer Fachfrage inhaltlich unterst{\"u}tzen und die Nachvollziehbarkeit und Richtigkeit einer Planungsentscheidung gew{\"a}hrleisten und plausibel darlegen. Mit Hilfe der Module sollen Entscheidungsfindungen katalysiert werden. Die Bauvorhaben der Zukunft werden zu einem großen Teil im Bestand liegen. Dieses Faktum erfordert planerische Maßnahmen, f{\"u}r die vollends Werkzeuge und Hilfsmittel fehlen, die zu plausiblen und sicheren Planungsentscheidungen f{\"u}hren. Die Entwicklung solcher Hilfsmittel ist Ziel dieser Forschung. Der Beitrag stellt prototypische Software-Module vor, die sich mit der Problematik der potenziellen Bebaubarkeit einer Grundst{\"u}cksfl{\"a}che auseinander setzen. Die Module verarbeiten Regeln, die den einschl{\"a}gigen Normen und Verordnungen entnommen sind, die bei der Erarbeitung einer Planungsl{\"o}sung eingehalten werden m{\"u}ssen.},
  subject      = {Bauplanung},
  language  = {de}
}
@inproceedings{RaueTimmlerAdami2003,
  author    = {Raue, Erich and Timmler, Hans-Georg and Adami, Kay},
  title     = {Physikalisch nichtlineare Analyse von Aussteifungssystemen unter Einbeziehung von Lastfolgeeffekten},
  doi       = {10.25643/bauhaus-universitaet.349},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3498},
  year      = {2003},
  abstract  = {Die physikalisch nichtlineare Analyse von Stahlbetontragwerken unter Ber{\"u}cksichtigung des Einspielverhaltens (adaptives Tragverhalten) mit Methoden der mathematischen Optimierung ist seit Jahren Gegenstand intensiver Forschungsarbeiten am Lehrstuhl Massivbau I der Bauhaus-Universit{\"a}t Weimar. Die dabei entwickelten Modelle und Algorithmen werden im folgenden Beitrag exemplarisch auf die Untersuchung von Aussteifungssystemen in Großtafelbauweise angewendet. Da bei diesen Geb{\"a}uden die aussteifende Konstruktion aus zusammengesetzten großformatigen Betonfertigteilen besteht, wird das Gesamttragverhalten maßgebend durch das Fugentragverhalten bestimmt. Die physikalische Nichtlinearit{\"a}t wird durch das Aufreißen der unbewehrten Horizontalfugen und den verschieblichen Verbund in den Vertikalfugen charakterisiert und entsprechend im Berechnungsmodell ber{\"u}cksichtigt. Beispielrechnungen belegen, dass f{\"u}r die beschriebenen Aussteifungssysteme signifikante Spannungsumlagerungen infolge des nichtlinearen Fugentragverhaltens auftreten. Weiterhin k{\"o}nnen Lastfolgeeffekte rechnerisch nachgewiesen werden. Im Gegensatz zu seismisch beanspruchten Systemen, die in k{\"u}rzester Zeit wiederholt extrem beansprucht werden, ist die Eintrittswahrscheinlichkeit bemessungsrelevanter Windlasten gering.},
  subject      = {Geb{\"a}ude},
  language  = {de}
}
@article{GuoAlajlanZhuangetal.,
  author    = {Guo, Hongwei and Alajlan, Naif and Zhuang, Xiaoying and Rabczuk, Timon},
  title     = {Physics-informed deep learning for three-dimensional transient heat transfer analysis of functionally graded materials},
  series = {Computational Mechanics},
  volume    = {2023},
  journal   = {Computational Mechanics},
  publisher = {Springer},
  address   = {Berlin},
  doi       = {10.1007/s00466-023-02287-x},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20230517-63666},
  pages     = {1 -- 12},
  abstract  = {We present a physics-informed deep learning model for the transient heat transfer analysis of three-dimensional functionally graded materials (FGMs) employing a Runge-Kutta discrete time scheme. Firstly, the governing equation, associated boundary conditions and the initial condition for transient heat transfer analysis of FGMs with exponential material variations are presented. Then, the deep collocation method with the Runge-Kutta integration scheme for transient analysis is introduced. The prior physics that helps to generalize the physics-informed deep learning model is introduced by constraining the temperature variable with discrete time schemes and initial/boundary conditions. Further the fitted activation functions suitable for dynamic analysis are presented. Finally, we validate our approach through several numerical examples on FGMs with irregular shapes and a variety of boundary conditions. From numerical experiments, the predicted results with PIDL demonstrate well agreement with analytical solutions and other numerical methods in predicting of both temperature and flux distributions and can be adaptive to transient analysis of FGMs with different shapes, which can be the promising surrogate model in transient dynamic analysis.},
  subject      = {W{\"a}rme{\"u}bergang},
  language  = {en}
}
@article{ZhakSidorenko1997,
  author    = {Zhak, S. V. and Sidorenko, V. S.},
  title     = {Optimized Models of Modes Choice for Displacement of technical Systems Objects},
  doi       = {10.25643/bauhaus-universitaet.534},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5347},
  year      = {1997},
  abstract  = {The effectiveness of working processes accomplished by various technological machines to a large extend depends on working quality of supply, transporting and orientating mechanisms which are very often produced as positional hydro-mechanical systems. The choice of their best type and regimes of work requires construction and analysis of models of their optimum steering which are complicated by nonlinearness, multy-criterialness of problem and also by occasional outbreaks of parameters and moments of steering regime changing. It was developed the common structure of such systems allowing within common scheme to vary the complexity degree of PHMS and the methods of inhibitory efforts supplement. For some systems which are complicated in series (from two-measured linear system to nine-measured non-linear) puzzles of the most fast zero-ambit getting are solved and two-criterial problems are analyzed. (T-min-speed, Z(T)- accuracy). There are suggested the computing procedures of optimum PHMS synthesis. The effectiveness of accepted methods of solving is asserted by the analogy of the results of gradually complicated models investigation and by their good analogy with the natural experiment. It was exposed the sense of heuristic methods of improving of approximately optimum steering, their elaboration on the base of theoretical models. The basic methods of optimum PGMS construction were also nominated.},
  subject      = {Modellierung},
  language  = {en}
}
@inproceedings{Gasser2003,
  author    = {Gasser, Ingenuin},
  title     = {On A New One-Dimensional Model to Describe Tunnel Fires},
  doi       = {10.25643/bauhaus-universitaet.288},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2889},
  year      = {2003},
  abstract  = {We present a model derived to describe tunnel fires. The model originates in a compressible description of the air in the tunnel. It takes into account the strong buoyancy forces and at the same time the small Mach-number of the airflow. We comment on the derivation, on analytical results and on numerical simulations of the model. The model has been validated using data from real tunnel fire experiments. It shows good agreement with the real situation.},
  subject      = {Tunnel},
  language  = {en}
}
@inproceedings{MundaniBungartz2004,
  author    = {Mundani, Ralf-Peter and Bungartz, Hans-Joachim},
  title     = {Octrees for Cooperative Work in a Network-Based Environment},
  doi       = {10.25643/bauhaus-universitaet.146},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1460},
  year      = {2004},
  abstract  = {Assuring global consistency in a cooperative working environment is the main focus of many nowaday research projects in the field of civil engineering and others. In this paper, a new approach based on octrees will be discussed. It will be shown that by the usage of octrees not only the management and control of processes in a network-based working environment can be optimised but also an efficient integration platform for processes from various disciplines - such as architecture and civil engineering - can be provided. By means of an octree-based collision detection resp. consistency assurance a client-server-architecture will be described as well as sophisticated information services for a further support of cooperative work.},
  subject      = {Ingenieurbau},
  language  = {en}
}
@inproceedings{SchlegelRautenstrauch2000,
  author    = {Schlegel, Roger and Rautenstrauch, Karl},
  title     = {Numerische Simulation von Mauerwerk als Kontinuum},
  doi       = {10.25643/bauhaus-universitaet.610},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6106},
  year      = {2000},
  abstract  = {Im vorliegenden Beitrag wird ein in das FE-Programmsystem ANSYS implementiertes elastoplastisches Berechnungsmodell zur nichtlinearen, r{\"a}umlichen Untersuchung von Mauerwerkstrukturen vorgestellt. Die Modellierung des heterogenen Baustoffs Mauerwerk erfolgt mit Hilfe eines verschmierten Ersatzkontinuums. Das anisotrope Materialverhalten wird sowohl hinsichtlich der Spannungs-Dehnungsbeziehung als auch bei der Beschreibung der Festigkeit ber{\"u}cksichtigt. Durch die Verwendung einer zusammengesetzten Fließbedingung ist es m{\"o}glich, das Versagen der einzelnen Mauerwerkkomponenten Stein und M{\"o}rtelfugen und des Verbundes zu ber{\"u}cksichtigen. Dadurch ist die Anwendbarkeit des Modells f{\"u}r mehrere Mauerwerksarten gegeben. Die hierf{\"u}r verwendeten Materialparameter sind aus einfachen Kleink{\"o}rperversuchen bestimmbar oder innerhalb gewisser Grenzen aus empirischen Formeln berechenbar. Die notwendige Beschr{\"a}nkung der Anzahl der Materialparameter sichert die praktische Anwendbarkeit des entwickelten Berechnungsmodells. Die numerische Umsetzung des hier verwendeten impliziten Berechnungsverfahrens l{\"a}sst sich in eine lokale und eine globale Iterationsebene gliedern. Die lokale Iteration am Integrationspunkt dient der Spannungsr{\"u}ckf{\"u}hrung. Dabei sind die Besonderheiten der Verarbeitung mehrfl{\"a}chiger Fließfiguren zu beachten. Die globale Iteration auf Systemebene sichert die Umlagerung des Residuums. Mit der Nachrechnung von Versuchsergebnissen soll das entwickelte Modell verifiziert und seine physikalische Leistungsf{\"a}higkeit eingesch{\"a}tzt werden.},
  subject      = {Mauerwerk},
  language  = {de}
}
@inproceedings{LepeniesRichterZastrau2003,
  author    = {Lepenies, Ingolf and Richter, Mike and Zastrau, Bernd W.},
  title     = {Numerische Simulation des mechanischen Verhaltens von Textilbeton unter Ber{\"u}cksichtigung mehrerer Strukturebenen},
  doi       = {10.25643/bauhaus-universitaet.328},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3281},
  year      = {2003},
  abstract  = {The failure mechanisms of textile reinforced concrete (TRC), which is a composite of bundles of long fibers and fine concrete, are complex. Most important for the ductility is the successive debonding of the fibers from the surrounding matrix when the brittle matrix is cracking. Therefore, one of the main issues is the simulation of the bond behavior between the reinforcement and the matrix. By introducing a hierarchical material model for TRC the mechanical behavior is simulated by means of representative volume elements modelled on the meso scale. Finite element analysis is used to determine the effective properties of TRC within a periodic homogenization framework. Further, a multiscale finite element technique is suggested, where constitutive equation are formulated only on the meso level.},
  subject      = {Beton},
  language  = {en}
}
@phdthesis{Schlegel2004,
  author    = {Schlegel, Roger},
  title     = {Numerische Berechnung von Mauerwerkstrukturen in homogenen und diskreten Modellierungsstrategien},
  doi       = {10.25643/bauhaus-universitaet.229},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20041213-2369},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2004},
  abstract  = {Im Zentrum der Arbeit stehen die Entwicklung, Verifikation, Implementierung und Leistungsf{\"a}higkeit numerischer Berechnungsmodelle f{\"u}r Mauerwerk im Rahmen der Kontinuums- und Diskontinuumsmechanik. Makromodelle beschreiben das Mauerwerk als verschmiertes Ersatzkontinuum. Mikromodelle ber{\"u}cksichtigen durch die Modellierung der einzelnen Steine und Fugen die Struktur des Mauerwerkverbandes. Soll dar{\"u}ber hinaus der durch die Querdehnungsinteraktion zwischen Stein und M{\"o}rtel hervorgerufene heterogene Spannungszustand im Mauerwerk abgebildet werden, so ist ein detailliertes Mikromodell, welches Steine und Fugen in ihren exakten geometrischen Dimensionen ber{\"u}cksichtigt, erforderlich. Demgegen{\"u}ber steht die vereinfachte Mikromodellierung, bei der die Fugen mit Hilfe von Kontaktalgorithmen beschrieben werden. Im Rahmen der Makromodellierung werden neue r{\"a}umliche Materialmodelle f{\"u}r verschiedene ein- und mehrschalige Mauerwerkarten hergeleitet. Die vorgestellten Modelle ber{\"u}cksichtigen die Anisotropie der Steifigkeiten, der Festigkeiten sowie des Ver- und Entfestigungsverhaltens. Die numerische Implementation erfolgt mit Hilfe moderner elastoplastischer Algorithmen im Rahmen der impliziten Finite Element Methode in das Programm ANSYS. Innerhalb der detaillierten Mikromodellierung wird ein neues, aus Materialbeschreibungen f{\"u}r Stein, M{\"o}rtel sowie deren Verbund bestehendes nichtlineares Berechnungsmodell entwickelt und in das Programm ANSYS implementiert. Die diskontinuumsmechanische Beschreibung von Mauerwerk im Rahmen der vereinfachten Mikromodellierung erfolgt unter Verwendung der expliziten Distinkt Element Methode mit Hilfe der Programme UDEC und 3DEC. An praktischen Beispielen werden Probleme der Tragf{\"a}higkeitsbewertung gemauerter Bogenbr{\"u}cken, M{\"o}glichkeiten zur Bewertung vorhandener Rissbildungen und Sch{\"a}digungen an historischen Mauerwerkstrukturen und Traglastberechnungen an gemauerten St{\"u}tzen ausgewertet und analysiert.},
  subject      = {Mauerwerk},
  language  = {de}
}
@inproceedings{MilbradtRose2000,
  author    = {Milbradt, Peter and Rose, Martin},
  title     = {Numerische Approximation makroskopischer Verkehrsmodelle mit der Methode der Finiten Elemente},
  doi       = {10.25643/bauhaus-universitaet.604},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6046},
  year      = {2000},
  abstract  = {Makroskopische Verkehrsmodelle sind ein wesentliches Hilfsmittel bei der Beurteilung und Steuerung von Verkehrsfl{\"u}ssen auf Hauptverkehrsadern. F{\"u}r die notwendige Beeinflussung des Verkehrsablaufs werden Online-Messungen und prognostische numerische Simulationen ben{\"o}tigt. F{\"u}r die Simulationen bieten sich makroskopische Verkehrsmodelle an, die den Verkehr als kontinuierliche Fahrzeugstr{\"o}meabbilden. Aufgrund der Analogie zu den Modellen der Str{\"o}mungsmechanik lassen sich die numerischen Verfahren aus diesem Bereich auch zur L{\"o}sung makroskopischer Verkehrsmodelle verwenden. Es wird eine Finite-Elemente-Approximation f{\"u}r die numerische Umsetzung makroskopischer Verkehrsmodelle vorgestellt. Exemplarisch wird sie am Verkehrsmodell von Kerner und Konh{\"a}user erl{\"a}utert. Dieses und andere makroskopische Verkehrsmodelle wurden bisher mit der Methode der Finiten Differenzen gel{\"o}st. Die vorgestellte Approximation entspricht einem Petrov-Galerkin-Verfahren, bei dem der Fehler eines Standard-Galerkin-Verfahrens mit Hilfe eines Upwinding-Koeffizienten minimiert wird. Die Wahl des Upwinding-Koeffizienten ist {\"u}bertragbar und basiert ausschließlich auf dem Charakter der zugrundeliegenden Gleichungen. Die Ergebnisse zeigen typische Ph{\"a}nomene eines Verkehrsablaufs wie die Entstehung von Stop-and-Go-Wellen oder Staus. Die Finite-Elemente-Methode erweist sich f{\"u}r unter-schiedlichste Verkehrsmodelle als ausgesprochen stabil.},
  subject      = {Verkehrsleitsystem},
  language  = {de}
}
@inproceedings{KirichukKoeppler1997,
  author    = {Kirichuk, A. and K{\"o}ppler, H.},
  title     = {Numerical Algorithms and Computer Modeling for nonlinear Analysis of Shell Structures},
  doi       = {10.25643/bauhaus-universitaet.438},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4382},
  year      = {1997},
  abstract  = {The dynamic behaviour of shells, which are widely used in construction and mechanical engineering as critical components of machinery and 3-D structures, under static and dynamic loadings is described by system of deep nonlinear differential equations. Solution of these equations can be received with assistance of technique basing on a modern numerical algorithms and computer modeling.. The system of nonlinear differential equations of vibration of the shells is proposed taking into account the inertia forces in the tangential and normal directions. Its solution is based on combination of parameter prolongation method, finite-difference method and the Newton-Kantorovich iterative algorithm that allows plotting the loading trajectories and determination of bifurcation points on them. Package of Applied Programs >SEVSOR< is a computation means to be used in research of deformation, stability and vibration in thin axically-symmetric shells of complicated shape Input data include information on shell geometry, physical and mechanical properties, bearing conditions, types of loadings and load application. Frame output of motion forms in real time or either in decelerated or accelerated time scales for creating cartoons or video films is used for analysis of the compound dynamic processes in shell-type structures.},
  subject      = {Schale},
  language  = {en}
}
@inproceedings{vanRooyenOlivier2004,
  author    = {van Rooyen, G.C. and Olivier, A. H.},
  title     = {Notes on structural analysis in a distributed collaboratory},
  doi       = {10.25643/bauhaus-universitaet.145},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1451},
  year      = {2004},
  abstract  = {The worldwide growth of communication networks and associated technologies provide the basic infrastructure for new ways of executing the engineering process. Collaboration amongst team members seperated in time and location is of particular importance. Two broad themes can be recognized in research pertaining to distributed collaboration. One theme focusses on the technical and technological aspects of distributed work, while the other emphasises human aspects thereof. The case of finite element structural analysis in a distributed collaboratory is examined in this paper. An approach is taken which has its roots in human aspects of the structural analysis task. Based on experience of how structural engineers currently approach and execute this task while utilising standard software designed for use on local workstations only, criteria are stated for a software architechture that could support collaborative structural analysis. Aspects of a pilot application and the results of qualitative performance measurements are discussed.},
  subject      = {Ingenieurbau},
  language  = {en}
}
@inproceedings{HahnWeitzmann2003,
  author    = {Hahn, Stephan and Weitzmann, R{\"u}diger},
  title     = {Nichtlineare Analyse von hybriden Konstruktionen unter Verwendung von selektiv gekoppelten Tragwerks- und Querschnittsmodellen},
  doi       = {10.25643/bauhaus-universitaet.302},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3026},
  year      = {2003},
  abstract  = {Bei der Untersuchung hybrider Strukturen kann eine Kopplung von Modellen unterschiedlicher Modellebenen vorteilhaft sein. Durch selektive Kopplung von Tragwerks- und Querschnittsmodellen in ausgew{\"a}hlten Bereichen der Konstruktion kann z.B. eine Verbesserung der Abbildungsgenauigkeit erzielt werden. Dadurch werden erweiterte Aussagen {\"u}ber das Querschnittstragverhalten in extrem beanspruchten Teilen des Tragwerks bei optionaler Skalierbarkeit des Modellumfangs m{\"o}glich. Im Beitrag werden ausgew{\"a}hlte Varianten der Modellbildung gegen{\"u}bergestellt und bewertet. Hierbei werden Aspekte der physikalischen Nichtlinearit{\"a}t von hybriden Konstruktionen insbesondere von Stahlbetonkonstruktionen ber{\"u}cksichtigt. Die Einbeziehung von Verfahren der mathematischen Optimierung in die Berechnungsstrategie erm{\"o}glicht die L{\"o}sung der zugrunde liegenden nichtlinearen Problemstellungen unter Vorgabe von Bemessungszielen und unter Beachtung von Grenzzustandsbedingungen.},
  subject      = {Tragwerk},
  language  = {de}
}
@inproceedings{WeferlingDonathPetzoldetal.2003,
  author    = {Weferling, Ulrich and Donath, Dirk and Petzold, Frank and Thurow, Torsten},
  title     = {Neue Techniken in der Bestandserfassung},
  doi       = {10.25643/bauhaus-universitaet.373},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3734},
  year      = {2003},
  abstract  = {Die digitale Unterst{\"u}tzung der Planungsprozesse ist ein aktueller Forschungs- und Arbeitsschwerpunkt der Professur Informatik in der Architektur (InfAR) und der Juniorprofessur Architekturinformatik der Fakult{\"a}t Architektur an der Bauhaus-Universit{\"a}t Weimar. Verankert in dem DFG Sonderforschungsbereich 524 >Werkzeuge und Konstruktionen f{\"u}r die Revitalisierung von Bauwerken< entstehen Konzepte und Prototypen f{\"u}r eine fachlich orientierte Planungsunterst{\"u}tzung. Als ein Teilaspekt wird in diesem Beitrag gezeigt, wie das Handaufmaß unter Einsatz modernen taktiler Erfassungsmethoden eine ganz neue Bedeutung f{\"u}r die Datenerfassung gewinnen kann. Das Potenzial der verschiedenen Verfahren zur Koordinatenbestimmung mit taktilen Werkzeugen wird evaluiert. Daraus wird eine Strategie entwickelt, die f{\"u}r die unterschiedlichen Notwendigkeiten im Planungsfortschritt den optimierten Einsatz der taktilen Erfassung in Kombination mit klassischen Erfassungsmethoden aufzeigt. Die Realisierbarkeit eines derartigen Konzeptes wird durch Fallstudien und m{\"o}gliche Ablaufszenarien f{\"u}r einzelne Verfahren nachgewiesen. Durch die Integration taktiler Messverfahren in die Bestandserfassung kann erreicht werden, dass - relevante (Geometrie-) Informationen in ein umfassendes Bauwerksmodell integriert werden k{\"o}nnen, - die Bauaufnahme wieder im direkten Kontakt zum Bauaufnahmeobjekt erfolgen kann und - die Verfahren so einfach und leicht von allen Beteiligten eingesetzt werden k{\"o}nnen, um die Bauaufnahme und die Planung wieder miteinander zu verzahnen.},
  subject      = {Geb{\"a}ude},
  language  = {de}
}
@inproceedings{MeissnerRueppelTheiss2004,
  author    = {Meißner, Udo F. and Rueppel, Uwe and Theiss, Mirko},
  title     = {Network-Based Fire Engineering Supported by Agents},
  doi       = {10.25643/bauhaus-universitaet.144},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1447},
  year      = {2004},
  abstract  = {Building design in Civil Engineering is characterized by the cooperation of experts in multiple disciplines. Close cooperation of engineers in different fields is the basis of high product quality, short development periods and a minimum of investment costs. For each building the engineers have to create a new fire engineering model. The consistent realization of the fire engineering model in all details has high demands on communication, collaboration and building models. Thereby, to preserve the related design models consistent to each other and compatible with the rules of fire engineering is a complex task. In addition, regulations and guidelines vary according to the building location, so the knowledge base must be integrated dynamically into the planning process. This contribution covers the integration of engineers and design models into a cooperation network on the basis of mobile agents. The distributed models of architectural design, structural planning and fire engineering are supported. These models are implemented as XML-based models which can be accessed by mobile agents for information retrieval and for processing tasks. Agents are provided to all planners, they are enabled to check up the distributed design models with the knowledge base of the fire protection regulations,. With the use of such an agent each planner is supported to check up his planning for accordance with the fire protection requirements. The fire-engineering-agent analyzes the design and detects inconsistencies by processing fire protection requirements and design model facts in a rule-based expert system. The possibility to check the planning information at an early state in the sense of compatibility to the fire protection regulations enables a comprehensive diagnosis of the design and the reduction of planning errors.},
  subject      = {Ingenieurbau},
  language  = {en}
}
@inproceedings{SchleyMejstrikHolz2004,
  author    = {Schley, Frank and Mejstrik, Marcus and Holz, K.-Peter},
  title     = {Network Based Co-operation Platform for Geotechnical Engineering},
  doi       = {10.25643/bauhaus-universitaet.143},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1431},
  year      = {2004},
  abstract  = {This paper describes an approach to support co-operation of experts in heterogeneous geotechnical engineering project environments during both regular execution and handling of exceptional situations. A co-operation platform is introduced which is based on a generalized information model mapping key information about the construction project, the construction process as well as the organization structure. Several tools are provided to operate the information model in a network based environment.},
  subject      = {Ingenieurbau},
  language  = {en}
}
@inproceedings{EslimyIsfahanyPegels2004,
  author    = {Eslimy-Isfahany, S. H. R. and Pegels, Georg},
  title     = {Net-distributed Co-operation Including Developing Countries, Practical Case Study - Iran},
  doi       = {10.25643/bauhaus-universitaet.142},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-1421},
  year      = {2004},
  abstract  = {The scientific transfer of key technology features to developing countries, together with adequate competence, localisation and adaptation, is the primary purpose of the proposed investigation. It is evident that introducing high-level CAD design and detailing will improve the planning process in developing countries. Successful utilization of applied information technology for the planning process, however, depends on the user-interface of individual software. Therefore, to open the great opportunity embedded in CAD software for clients globally, the language and character-set barrier of traditional user-interfaces must be overcome. A proposal for a research program is given here to address such issue in favour of global civil engineering.},
  subject      = {Ingenieurbau},
  language  = {en}
}
@phdthesis{Salavati,
  author    = {Salavati, Mohammad},
  title     = {Multi-Scale Modeling of Mechanical and Electrochemical Properties of 1D and 2D Nanomaterials, Application in Battery Energy Storage Systems},
  doi       = {10.25643/bauhaus-universitaet.4183},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20200623-41830},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  pages     = {166},
  abstract  = {Material properties play a critical role in durable products manufacturing. Estimation of the precise characteristics in different scales requires complex and expensive experimental measurements. Potentially, computational methods can provide a platform to determine the fundamental properties before the final experiment. Multi-scale computational modeling leads to the modeling of the various time, and length scales include nano, micro, meso, and macro scales. These scales can be modeled separately or in correlation with coarser scales. Depend on the interested scales modeling, the right selection of multi-scale methods leads to reliable results and affordable computational cost. The present dissertation deals with the problems in various length and time scales using computational methods include density functional theory (DFT), molecular mechanics (MM), molecular dynamics (MD), and finite element (FE) methods. Physical and chemical interactions in lower scales determine the coarser scale properties. Particles interaction modeling and exploring fundamental properties are significant challenges of computational science. Downscale modelings need more computational effort due to a large number of interacted atoms/particles. To deal with this problem and bring up a fine-scale (nano) as a coarse-scale (macro) problem, we extended an atomic-continuum framework. The discrete atomic models solve as a continuum problem using the computationally efficient FE method. MM or force field method based on a set of assumptions approximates a solution on the atomic scale. In this method, atoms and bonds model as a harmonic oscillator with a system of mass and springs. The negative gradient of the potential energy equal to the forces on each atom. In this way, each bond's total potential energy includes bonded, and non-bonded energies are simulated as equivalent structural strain energies. Finally, the chemical nature of the atomic bond is modeled as a piezoelectric beam element that solves by the FE method. Exploring novel materials with unique properties is a demand for various industrial applications. During the last decade, many two-dimensional (2D) materials have been synthesized and shown outstanding properties. Investigation of the probable defects during the formation/fabrication process and studying their strength under severe service life are the critical tasks to explore performance prospects. We studied various defects include nano crack, notch, and point vacancy (Stone-Wales defect) defects employing MD analysis. Classical MD has been used to simulate a considerable amount of molecules at micro-, and meso- scales. Pristine and defective nanosheet structures considered under the uniaxial tensile loading at various temperatures using open-source LAMMPS codes. The results were visualized with the open-source software of OVITO and VMD. Quantum based first principle calculations have been conducting at electronic scales and known as the most accurate Ab initio methods. However, they are computationally expensive to apply for large systems. We used density functional theory (DFT) to estimate the mechanical and electrochemical response of the 2D materials. Many-body Schr{\"o}dinger's equation describes the motion and interactions of the solid-state particles. Solid describes as a system of positive nuclei and negative electrons, all electromagnetically interacting with each other, where the wave function theory describes the quantum state of the set of particles. However, dealing with the 3N coordinates of the electrons, nuclei, and N coordinates of the electrons spin components makes the governing equation unsolvable for just a few interacted atoms. Some assumptions and theories like Born Oppenheimer and Hartree-Fock mean-field and Hohenberg-Kohn theories are needed to treat with this equation. First, Born Oppenheimer approximation reduces it to the only electronic coordinates. Then Kohn and Sham, based on Hartree-Fock and Hohenberg-Kohn theories, assumed an equivalent fictitious non-interacting electrons system as an electron density functional such that their ground state energies are equal to a set of interacting electrons. Exchange-correlation energy functionals are responsible for satisfying the equivalency between both systems. The exact form of the exchange-correlation functional is not known. However, there are widely used methods to derive functionals like local density approximation (LDA), Generalized gradient approximation (GGA), and hybrid functionals (e.g., B3LYP). In our study, DFT performed using VASP codes within the GGA/PBE approximation, and visualization/post-processing of the results realized via open-source software of VESTA. The extensive DFT calculations are conducted 2D nanomaterials prospects as anode/cathode electrode materials for batteries. Metal-ion batteries' performance strongly depends on the design of novel electrode material. Two-dimensional (2D) materials have developed a remarkable interest in using as an electrode in battery cells due to their excellent properties. Desirable battery energy storage systems (BESS) must satisfy the high energy density, safe operation, and efficient production costs. Batteries have been using in electronic devices and provide a solution to the environmental issues and store the discontinuous energies generated from renewable wind or solar power plants. Therefore, exploring optimal electrode materials can improve storage capacity and charging/discharging rates, leading to the design of advanced batteries. Our results in multiple scales highlight not only the proposed and employed methods' efficiencies but also promising prospect of recently synthesized nanomaterials and their applications as an anode material. In this way, first, a novel approach developed for the modeling of the 1D nanotube as a continuum piezoelectric beam element. The results converged and matched closely with those from experiments and other more complex models. Then mechanical properties of nanosheets estimated and the failure mechanisms results provide a useful guide for further use in prospect applications. Our results indicated a comprehensive and useful vision concerning the mechanical properties of nanosheets with/without defects. Finally, mechanical and electrochemical properties of the several 2D nanomaterials are explored for the first time—their application performance as an anode material illustrates high potentials in manufacturing super-stretchable and ultrahigh-capacity battery energy storage systems (BESS). Our results exhibited better performance in comparison to the available commercial anode materials.},
  subject      = {Batterie},
  language  = {en}
}
@inproceedings{LaemmerMeissnerRuben2003,
  author    = {L{\"a}mmer, Lutz and Meißner, Udo F. and Ruben, Jochen},
  title     = {Modellierung von Baugrund-Tragwerk-Systemen f{\"u}r die parallele numerische Simulation unter Ber{\"u}cksichtigung dynamischer Aspekte},
  doi       = {10.25643/bauhaus-universitaet.327},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3276},
  year      = {2003},
  abstract  = {Bei der Gr{\"u}ndung von schweren Bauwerken (z.B. Hochh{\"a}usern auf Gr{\"u}ndungsplatten und pf{\"a}hlen) wird der Lastabtrag in den Baugrund durch eine starke Interaktion zwischen Bauwerk und Baugrund bestimmt. Der Baugrund kann ph{\"a}nomenologisch als Mehrphasenkontinuum beschrieben werden, bei dem die Phasen Feststoff, Fl{\"u}ssigkeit und Gas in mechanische Wechselwirkung treten. Die Wechselwirkung zwischen der Deformation des Feststoffes und der Str{\"o}mung des Porenwassers spielt unter der Lasteinwirkung des Bauwerks und unter dynamischer Erregung eine zentrale Rolle. Bei komplexen Gr{\"u}ndungsverh{\"a}ltnissen k{\"o}nnen die Deformations- und Spannungszust{\"a}nde realit{\"a}tsnah nur durch dreidimensionale Modelle erfasst werden. Je nach Baufortschritt stellen sich die Probleme dabei unterschiedlich dar. Der vorliegende Beitrag besch{\"a}ftigt sich mit der f{\"u}r die mit der Simulation mit der Methode der finiten Elemente notwendigen Modellierung und der rechnergest{\"u}tzten Netzgenerierung f{\"u}r die Baugrund-Tragwerk-Strukturen. Bei komplexen dreidimensionalen Gr{\"u}ndungskonstruktionen ist eine solche rechnergest{\"u}tzte Diskretisierung mit finiten Elementen zweckm{\"a}ßig, die das geotechnische System und dessen Randbedingungen und Lasten umfassend beschreiben und verwalten kann. Daf{\"u}r werden geeignete Software-Werkzeuge vorgestellt, mit denen sich dreidimensionale, zeitabh{\"a}ngige Systeme modellieren und diskretisieren lassen. Die Kontaktproblematik zwischen Baugrund und Tragwerk und die Besonderheiten des Mehrphasenkontinuums stellen besondere Anspr{\"u}che an die Diskretisierung. Zudem werden Methoden vorgestellt, die das akkumulierte Gr{\"u}ndungsmodell, das sich {\"u}ber den Bauablauf ergibt, verwalten und die verschiedenen Bauzust{\"a}nde in einem dynamischen Modell bereitstellen.},
  subject      = {Boden-Bauwerk-Wechselwirkung},
  language  = {de}
}
@article{Dudek1997,
  author    = {Dudek, Mariusz},
  title     = {Modellierung der Verkehrsmittelwahl},
  doi       = {10.25643/bauhaus-universitaet.481},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4817},
  year      = {1997},
  abstract  = {Die Zielstellung der Modal­Split­Betrachtungen l{\"a}uft darauf hinaus, Entscheidungs-kriterien zu erarbeiten, nach denen die einzelnen Personen ihre Verkehrsmittel ausw{\"a}hlen. In dieser Ver{\"o}ffentlichung wurden alle drei Gruppen der Modelle (klassische, verhaltensorientierte und der Analyse) der Verkehrsaufteilung kurz charakterisiert. Dann wurden vier ausgew{\"a}hlte Modelle genauer beschrieben. Zum Schluß wird das Modell der Verkehrsmittelwahl dargestellt , das f{\"u}r die Untersuchung der Verkehrsaufteilung in Krakau verwendet wurde .},
  subject      = {Verkehrsmittelwahl},
  language  = {de}
}
@inproceedings{Huhnt2000,
  author    = {Huhnt, Wolfgang},
  title     = {Modellierung der Prozesse als Basis der Informationssysteme f{\"u}r Bauunternehmen},
  doi       = {10.25643/bauhaus-universitaet.596},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5969},
  year      = {2000},
  abstract  = {Die fachlichen Grundlagen der Aufgaben, die in einem Bauunternehmen zu bearbeiten sind, wurden in verschiedenen Disziplinen entwickelt. Maßgeblich waren der Baubetrieb und die Betriebswirtschaftslehre. Die parallele Entwicklung hat jedoch dazu gef{\"u}hrt, dass grundlegende Begriff und Verfahren zwischen den Disziplinen nicht aufeinander abgestimmt sind. Die verschiedenen Aufgaben beeinflussen jedoch einander. Innerhalb der jeweiligen Disziplin wurden Informationssysteme entwickelt, mit denen sich die Aufgaben aus der jeweiligen Disziplin bearbeiten lassen. Zur Verbindung der "verschiedenen Welten" existieren zwar ausgew{\"a}hlte Schnittstellen, eine durchg{\"a}ngige verteilte Bearbeitung der verschiedenen Aufgaben wird jedoch noch nicht umfassend unterst{\"u}tzt. Im vorliegenden Beitrag wird ein Vorgehen vorgestellt, auf dessen Grundlage eine verteilte Bearbeitung der fachgebiets{\"u}bergreifenden Aufgaben erfolgen kann. Das Vorgehen beruht auf der Modellierung der Prozesse sowie der zur Bearbeitung der als Bestandteil der Prozesse spezifizierten Aufgaben ben{\"o}tigten Informationen. Dieses Modell wird auf der Grundlage der Mengenlehre mit einem entsprechenden Werkzeug aufgebaut. Die Spezifikation der Informationen wird genutzt, um Datenbankschemata zu generieren, die Spezifikation der Aufgaben wird genutzt, um Werkzeuge zur Bearbeitung zu identifizieren. Diese Werkzeuge sind in Java als Applets implementiert und k{\"o}nnen {\"u}ber entsprechende Treiber auf die Datenbanken zugreifen. Das Prozessmodell wird in einem n{\"a}chsten Schritt erweitert. Personen werden eingef{\"u}hrt. Diesen Personen werden Aufgaben zugewiesen, deren Bearbeitung sie ausf{\"u}hren sollen. Auf der Grundlage des erweiterten Prozessmodells werden die Applets, die eine Person ben{\"o}tigt, auf einer entsprechenden Internet-Seite zusammengestellt. Damit kann projektspezifisch ein Informationssystem zusammengestellt werden, das eine verteilte Bearbeitung der verschiedenartigen Aufgaben unterst{\"u}tzt.},
  subject      = {Baubetrieb},
  language  = {de}
}
@article{PiskunovMarchuk1997,
  author    = {Piskunov, V. G. and Marchuk, A. V.},
  title     = {Model of stressed-strained State of Multilayer Masses with regard for Non-Ideal Contact of Layers},
  doi       = {10.25643/bauhaus-universitaet.542},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5427},
  year      = {1997},
  abstract  = {Thus, mathematical model stressed- strained of a condition of layered masses is constructed. The model has high accuracy. It allows to simulate slippery contact of layers without friction. Thus not the order of permitting system of the equations is increased, and at its realization the method of fenite elements does not increase quantity of required degrees freedom. The differential operators included in system the equations are similar known in the classical theory of shells. It facilitates construction of a finite element. Presence in system of the differential equations of derivative of external forces allows to use her for the decision of contact problems with a stain of contact commensurable with thickness of a masses.},
  subject      = {Geschichtetes Medium},
  language  = {en}
}
@inproceedings{RueppelMeissnerGutzke2003,
  author    = {R{\"u}ppel, Uwe and Meißner, Iris and Gutzke, Thomas},
  title     = {Mobile Computing in der Grundwasserbewirtschaftung},
  doi       = {10.25643/bauhaus-universitaet.354},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3547},
  year      = {2003},
  abstract  = {Die Bewirtschaftung von Grundwasser umfasst zum einen die Nutzungserfordernisse und Versorgungsbed{\"u}rfnisse und zum andern den Schutz des Grundwassers als Bestandteil des Naturhaushaltes. Die Verwendung von Informations- und Kommunikationsmethoden zur numerischen Grundwassermodellierung und zur Verwaltung von großfl{\"a}chigen qualitativen und quantitativen Grundwasserinformationen er{\"o}ffnen die M{\"o}glichkeit einer nachhaltigen wasserwirtschaftlichen Planung sowie einer gezielten Steuerung der Auswirkungen von Grundwasserentnahmen und -versickerungen. Im Rahmen des Pilotprojektes Grundwasser-Online im Hessischen Ried (www.grundwasser-online.de) wurden gezielt die Arbeitsabl{\"a}ufe bei der Erfassung der Daten zur Grundwasserbewirtschaftung sowie der anschließenden Verarbeitung analysiert, bewertet und software-technisch umgesetzt. Ein wichtiger Aspekt dabei ist die Datenerfassung an den r{\"a}umlich verteilten Grundwassermessstellen. Der vorliegende Beitrag zeigt auf, wie mobile EDV Ger{\"a}te mit einer geeigneten Software die Arbeitsabl{\"a}ufe beim Einsatz vor Ort effizienter gestalten und die Einhaltung der Messvorgaben unterst{\"u}tzen k{\"o}nnen. Durch die Minimierung von Fehlerquellen kann dabei eine Qualit{\"a}tsverbesserung des Datenbestandes erreicht werden. Es wird ein Konzept zur mobilen Erfassung von Grundwasserdaten unter Verwendung von GPS-Positionsdaten und Plausibilit{\"a}tspr{\"u}fungen vorgestellt. Die Technologien und Herausforderungen bei der prototypischen Umsetzung werden aufgezeigt.},
  subject      = {Grundwasser},
  language  = {de}
}
@inproceedings{PopovaDatchevaIankov2003,
  author    = {Popova, E. D. and Datcheva, Maria and Iankov, Roumen},
  title     = {Mechanical Models with Interval Parameters},
  doi       = {10.25643/bauhaus-universitaet.348},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3482},
  year      = {2003},
  abstract  = {In this paper we consider modelling of composite material with inclusions where the elastic material properties of both matrix and inclusions are uncertain and vary within prescribed bounds. Such mechanical systems, involving interval uncertainties and modelled by finite element method, can be described by parameter dependent systems of linear interval equations and process variables depending on the system solution. A newly developed hybrid interval approach for solving parametric interval linear systems is applied to the considered model and the results are compared to other interval methods. The hybrid approach provides very sharp bounds for the process variables - element strains and stresses. The sources for overestimation when dealing with interval computations are demonstrated. Based on the element strains and stresses, we introduce a definition for the values of nodal strains and stresses by using a set-theoretic approach.},
  subject      = {Verbundwerkstoff},
  language  = {en}
}
@article{Legatiuk,
  author    = {Legatiuk, Dmitrii},
  title     = {Mathematical Modelling by Help of Category Theory: Models and Relations between Them},
  series = {mathematics},
  volume    = {2021},
  journal   = {mathematics},
  number    = {volume 9, issue 16, article 1946},
  publisher = {MDPI},
  address   = {Basel},
  doi       = {10.3390/math9161946},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20210817-44844},
  pages     = {17},
  abstract  = {The growing complexity of modern practical problems puts high demand on mathematical modelling. Given that various models can be used for modelling one physical phenomenon, the role of model comparison and model choice is becoming particularly important. Methods for model comparison and model choice typically used in practical applications nowadays are computationbased, and thus time consuming and computationally costly. Therefore, it is necessary to develop other approaches to working abstractly, i.e., without computations, with mathematical models. An abstract description of mathematical models can be achieved by the help of abstract mathematics, implying formalisation of models and relations between them. In this paper, a category theory-based approach to mathematical modelling is proposed. In this way, mathematical models are formalised in the language of categories, relations between the models are formally defined and several practically relevant properties are introduced on the level of categories. Finally, an illustrative example is presented, underlying how the category-theory based approach can be used in practice. Further, all constructions presented in this paper are also discussed from a modelling point of view by making explicit the link to concrete modelling scenarios.},
  subject      = {Kategorientheorie},
  language  = {en}
}
@inproceedings{GrigrievaLymarenko2003,
  author    = {Grigrieva, Polina and Lymarenko, Yulia},
  title     = {Mathematical modeling of nonlinear effects for vibrodiagnostics of fatigue cracks},
  doi       = {10.25643/bauhaus-universitaet.291},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2917},
  year      = {2003},
  abstract  = {The vibration control of complicated mechanical structures is impossible without proper mathematical models that allow to have a true apprehension of events occurring in structural member before the starting of the experiment and correct the diagnostic experiment in case of need. An approach that implies using of a discrete model reflecting all required features of a prototype system and permitting of an effective analytical and numerical investigation is proposed in the work. At first a discrete model of a bladed disk with flaw is considered. Taking into account the symmetry of the structure by utilization of mathematical tools of group presentation theory the number of degrees of freedom of the system is diminished. Small damage of the disk is regarded as perturbation of structure symmetry. The distinction of vibration characteristics such as natural frequencies and mode shapes of damaged and undamaged systems is determined theoretically with the help of perturbation theory and can be used as an effective diagnostic criterion of a small-scale damage of the structure. In the second part of the work a non-linear two-mass model of an acoustic emission in a damaged structure is proposed. On basis of the numerical integration of the nonlinear differential equations and expansion of the derived solution into a Fourier series free and forced vibrations of the model are investigated. It is shown that proposed model reflects all characteristic properties of vibrations of damaged structures: reduction of natural frequency, sub- and super-resonances, acoustic effects.},
  subject      = {Nichtlineare Mechanik},
  language  = {en}
}
@inproceedings{Weitzmann2003,
  author    = {Weitzmann, R{\"u}diger},
  title     = {Limit state design of hybrid structures with meshless methods using mathematical optimization},
  doi       = {10.25643/bauhaus-universitaet.6},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-67},
  year      = {2003},
  abstract  = {The revitalization of existing structures belongs to the frequently tasks in urban reconstruction processes. The adaptation for new requirements will commonly affect substantial changes in the general configuration of structures. The resulting revitalized structures are characterized by a hybrid design, where old and new, identical or diverse materials and members will be coupled in different ways. In the planning stage the treatment of these systems leads to application of complex and hybrid mechanical models respectively. High performance numerical instruments have to be applied for solving not only analysis but also targeted design problems. Because of the hybrid character of mechanical models in revitalization planning processes the use of hybrid technologies is advantageous. In this paper mixed domain technique will be used for connecting EFG and FE. The models derived will be adopted for design purposes of non-linear loaded hybrid structures. The investigations show a good adaptability of the meshless methods to the design of hybrid structures by using optimization strategies. With this method the advantages of both finite element and meshless methods can be utilized most suitable. With the property of a minimum amount of unknowns by maintaining an adequate quality of the results the application of mixed finite element and meshless methods is a promising alternative to traditional methods in structural analysis and optimization.},
  subject      = {Geb{\"a}ude},
  language  = {de}
}
@article{KreibichPirothSeifertetal.,
  author    = {Kreibich, H. and Piroth, K. and Seifert, I. and Maiwald, Holger and Kunert, U. and Schwarz, Jochen and Merz, B. and Thieken, A. H.},
  title     = {Is flow velocity a significant parameter in flood damage modelling?},
  series = {Natural Hazards and Earth System Science},
  journal   = {Natural Hazards and Earth System Science},
  doi       = {10.25643/bauhaus-universitaet.3145},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170425-31455},
  pages     = {1679 -- 1692},
  abstract  = {Flow velocity is generally presumed to influence flood damage. However, this influence is hardly quantified and virtually no damage models take it into account. Therefore, the influences of flow velocity, water depth and combinations of these two impact parameters on various types of flood damage were investigated in five communities affected by the Elbe catchment flood in Germany in 2002. 2-D hydraulic models with high to medium spatial resolutions were used to calculate the impact parameters at the sites in which damage occurred. A significant influence of flow velocity on structural damage, particularly on roads, could be shown in contrast to a minor influence on monetary losses and business interruption. Forecasts of structural damage to road infrastructure should be based on flow velocity alone. The energy head is suggested as a suitable flood impact parameter for reliable forecasting of structural damage to residential buildings above a critical impact level of 2m of energy head or water depth. However, general consideration of flow velocity in flood damage modelling, particularly for estimating monetary loss, cannot be recommended.},
  subject      = {Str{\"o}mungsgeschwindigkeit},
  language  = {en}
}
@article{Rudnicki1997,
  author    = {Rudnicki, Andrzej},
  title     = {Investigation by Computer Simulation - some aspect of transportation service reliability in urban public transport},
  doi       = {10.25643/bauhaus-universitaet.482},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4829},
  year      = {1997},
  abstract  = {Essence of service unreliability on account of irregularity has been given. The reasons of occurance of overcrowded vehicles have been listed. The factor of service unreliability on account of irregularity has been determined. It is probability of the event, that the passenger finds departing vehicle fully filled, i.e. when all places seating and standing are occupied or condition of the travel, which would be not acceptable for passenger. Large dispersion of headways (i.e. irregularity) increases probability of such situations. To calculate the mentioned factor, the computer simulation was used. Both, passenger arrivals and vehicle operation have been modelled as stochastic interacted processes. Distributions of headways and passenger arrivals have been fixed by statistical methods. The >maximal capacity< of a vehicle has been determined. The set of parameters values for simulation runs has been given. The transformed results of computer simulation are series of nomographs for determination of a factor value. They were prepared for many types of trams and city buses, but only one nomograph has been presented. Difficulties in verification of model were discussed. Recommendations for rational utilisation level of public transport means capacity in the condition of randomness of passenger arrivals and disturbances in vehicle operation have been proposed. The other possibilities of service unreliability have been mentioned. General conclusions have been given},
  subject      = {{\"O}ffentlicher Personennahverkehr},
  language  = {en}
}