@inproceedings{StahrRuthWolkowicz,
  author    = {Stahr, Alexander and Ruth, J{\"u}rgen and Wolkowicz, Christian},
  title     = {... WITHOUT RIGHT ANGLE.},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3024},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30248},
  pages     = {8},
  abstract  = {Currently sculptural design is one of the most discussed themes in architecture. Due to their light weight, easy transportation and assembly, as well as an almost unlimited structural variety, parameterised spatial structures are excellently suited for constructive realisation of free formed claddings. They subdivide the continuous surface into a structure of small sized nodes, straight members and plane glass panels. Thus they provide an opportunity to realise arbitrary double-curved claddings with a high degree of transparency, using industrial semi-finished products (steel sections, flat glass). Digital design strategies and a huge number of similar looking but in detail unique structural members demand a continuous digital project handling. Within a research project, named MYLOMESH, a free-formed spatial structure was designed, constructed, fabricated and assembled. All required steps were carried out based on digital data. Different digital connections (scripts) between varying software tools, which are usually not used in the planning process of buildings, were created. They allow a completely digital workflow. The project, its design, meshing, constructive detailing and the above-mentioned scripts are described in this paper.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{CruzFalcaoMalonek,
  author    = {Cruz, J. F. and Falc{\~a}o, M. Irene and Malonek, Helmuth Robert},
  title     = {3D-MAPPINGS AND THEIR APPROXIMATION BY SERIES OF POWERS OF A SMALL PARAMETER},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2940},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29406},
  pages     = {14},
  abstract  = {In classical complex function theory the geometric mapping property of conformality is closely linked with complex differentiability. In contrast to the planar case, in higher dimensions the set of conformal mappings is only the set of M{\"o}bius transformations. Unfortunately, the theory of generalized holomorphic functions (by historical reasons they are called monogenic functions) developed on the basis of Clifford algebras does not cover the set of M{\"o}bius transformations in higher dimensions, since M{\"o}bius transformations are not monogenic. But on the other side, monogenic functions are hypercomplex differentiable functions and the question arises if from this point of view they can still play a special role for other types of 3D-mappings, for instance, for quasi-conformal ones. On the occasion of the 16th IKM 3D-mapping methods based on the application of Bergman's reproducing kernel approach (BKM) have been discussed. Almost all authors working before that with BKM in the Clifford setting were only concerned with the general algebraic and functional analytic background which allows the explicit determination of the kernel in special situations. The main goal of the abovementioned contribution was the numerical experiment by using a Maple software specially developed for that purpose. Since BKM is only one of a great variety of concrete numerical methods developed for mapping problems, our goal is to present a complete different from BKM approach to 3D-mappings. In fact, it is an extension of ideas of L. V. Kantorovich to the 3-dimensional case by using reduced quaternions and some suitable series of powers of a small parameter. Whereas until now in the Clifford case of BKM the recovering of the mapping function itself and its relation to the monogenic kernel function is still an open problem, this approach avoids such difficulties and leads to an approximation by monogenic polynomials depending on that small parameter.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{AlDiabHenryBoulemia2003,
  author    = {Al Diab, Ali and Henry, Eric and Boulemia, Cherif},
  title     = {A concerted and multi-criterion approach for helping to choose a Structure- Foundation system of building},
  doi       = {10.25643/bauhaus-universitaet.273},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-2732},
  year      = {2003},
  abstract  = {The research of the best building design requires a concerted design approach of both structure and foundation. Our work is an application of this approach. Our objective is also to create an interactive tool, which will be able to define, at the early design stages, the orientations of structure and foundation systems that satisfy as well as possible the client and the architect. If the concerns of these two actors are primarily technical and economical, they also wish to apprehend the environmental and social dimensions of their projects. Thus, this approach bases on alternative studies and on a multi-criterion analysis. In this paper, we present the context of our work, the problem formulation, which allows a concerted design of Structure and Foundation systems and the feasible solutions identifying process.},
  subject      = {Bauwerk},
  language  = {en}
}
@inproceedings{BockGuerlebeck,
  author    = {Bock, Sebastian and G{\"u}rlebeck, Klaus},
  title     = {A Coupled Ritz-Galerkin Approach Using Holomorphic and Anti-holomorphic Functions},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2928},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29281},
  pages     = {14},
  abstract  = {The contribution focuses on the development of a basic computational scheme that provides a suitable calculation environment for the coupling of analytical near-field solutions with numerical standard procedures in the far-field of the singularity. The proposed calculation scheme uses classical methods of complex function theory, which can be generalized to 3-dimensional problems by using the framework of hypercomplex analysis. The adapted approach is mainly based on the factorization of the Laplace operator EMBED Equation.3 by the Cauchy-Riemann operator EMBED Equation.3 , where exact solutions of the respective differential equation are constructed by using an orthonormal basis of holomorphic and anti-holomorphic functions.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BaitschHartmann,
  author    = {Baitsch, Matthias and Hartmann, Dietrich},
  title     = {A FRAMEWORK FOR THE INTERACTIVE VISUALIZATION OF ENGINEERING MODELS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2919},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29194},
  pages     = {9},
  abstract  = {Interactive visualization based on 3D computer graphics nowadays is an indispensable part of any simulation software used in engineering. Nevertheless, the implementation of such visualization software components is often avoided in research projects because it is a challenging and potentially time consuming task. In this contribution, a novel Java framework for the interactive visualization of engineering models is introduced. It supports the task of implementing engineering visualization software by providing adequate program logic as well as high level classes for the visual representation of entities typical for engineering models. The presented framework is built on top of the open source visualization toolkit VTK. In VTK, a visualization model is established by connecting several filter objects in a so called visualization pipeline. Although designing and implementing a good pipeline layout is demanding, VTK does not support the reuse of pipeline layouts directly. Our framework tailors VTK to engineering applications on two levels. On the first level it adds new - engineering model specific - filter classes to VTK. On the second level, ready made pipeline layouts for certain aspects of engineering models are provided. For instance there is a pipeline class for one-dimensional elements like trusses and beams that is capable of showing the elements along with deformations and member forces. In order to facilitate the implementation of a graphical user interface (GUI) for each pipeline class, there exists a reusable Java Swing GUI component that allows the user to configure the appearance of the visualization model. Because of the flexible structure, the framework can be easily adapted and extended to new problem domains. Currently it is used in (i) an object-oriented p-version finite element code for design optimization, (ii) an agent based monitoring system for dam structures and (iii) the simulation of destruction processes by controlled explosives based on multibody dynamics. Application examples from all three domains illustrates that the approach presented is powerful as well as versatile.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BrackxDeKnockDeSchepper,
  author    = {Brackx, Fred and De Knock, B. and De Schepper, Hennie},
  title     = {A MULTI--DIMENSIONAL HILBERT TRANSFORM IN ANISOTROPIC CLIFFORD ANALYSIS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2929},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29297},
  pages     = {15},
  abstract  = {In earlier research, generalized multidimensional Hilbert transforms have been constructed in m-dimensional Euclidean space, in the framework of Clifford analysis. Clifford analysis, centred around the notion of monogenic functions, may be regarded as a direct and elegant generalization to higher dimension of the theory of the holomorphic functions in the complex plane. The considered Hilbert transforms, usually obtained as a part of the boundary value of an associated Cauchy transform in m+1 dimensions, might be characterized as isotropic, since the metric in the underlying space is the standard Euclidean one. In this paper we adopt the idea of a so-called anisotropic Clifford setting, which leads to the introduction of a metric dependent m-dimensional Hilbert transform, showing, at least formally, the same properties as the isotropic one. The Hilbert transform being an important tool in signal analysis, this metric dependent setting has the advantage of allowing the adjustment of the co-ordinate system to possible preferential directions in the signals to be analyzed. A striking result to be mentioned is that the associated anisotropic (m+1)-dimensional Cauchy transform is no longer uniquely determined, but may stem from a diversity of (m+1)-dimensional "mother" metrics.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{MostBucherMacke,
  author    = {Most, Thomas and Bucher, Christian and Macke, M.},
  title     = {A NATURAL NEIGHBOR BASED MOVING LEAST SQUARES APPROACH WITH INTERPOLATING WEIGHTING FUNCTION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2994},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29943},
  pages     = {17},
  abstract  = {The Element-free Galerkin Method has become a very popular tool for the simulation of mechanical problems with moving boundaries. The internally applied Moving Least Squares approximation uses in general Gaussian or cubic weighting functions and has compact support. Due to the approximative character of this method the obtained shape functions do not fulfill the interpolation condition, which causes additional numerical effort for the imposition of the essential boundary conditions. The application of a singular weighting function, which leads to singular coefficient matrices at the nodes, can solve this problem, but requires a very careful placement of the integration points. Special procedures for the handling of such singular matrices were proposed in literature, which require additional numerical effort. In this paper a non-singular weighting function is presented, which leads to an exact fulfillment of the interpolation condition. This weighting function leads to regular values of the weights and the coefficient matrices in the whole interpolation domain even at the nodes. Furthermore this function gives much more stable results for varying size of the influence radius and for strongly distorted nodal arrangements than classical weighting function types. Nevertheless, for practical applications the results are similar as these obtained with the regularized weighting type presented by the authors in previous publications. Finally a new concept will be presented, which enables an efficient analysis of systems with strongly varying node density. In this concept the nodal influence domains are adapted depending on the nodal configuration by interpolating the influence radius for each direction from the distances to the natural neighbor nodes. This approach requires a Voronoi diagram of the domain, which is available in this study since Delaunay triangles are used as integration background cells. In the numerical examples it will be shown, that this method leads to a more uniform and reduced number of influencing nodes for systems with varying node density than the classical circular influence domains, which means that the small additional numerical effort for interpolating the influence radius leads to remarkable reduction of the total numerical cost in a linear analysis while obtaining similar results. For nonlinear calculations this advantage would be even more significant.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{KatzenbachGiere2003,
  author    = {Katzenbach, Rolf and Giere, Johannes},
  title     = {Abstraktion von Prozessmustern im geotechnischen Bauplanungsprozess},
  doi       = {10.25643/bauhaus-universitaet.319},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3195},
  year      = {2003},
  abstract  = {Der Beitrag basiert auf den Ans{\"a}tzen und Ergebnissen des Forschungsprojekts >Prozessorientierte Vernetzung von Ingenieurplanungen am Beispiel der Geotechnik<, das im Rahmen des Schwerpunktprogramms 1103 >Vernetzt-kooperative Planungsprozesse im Konstruktiven Ingenieurbau< von der DFG gef{\"o}rdert wird. Ziel des gemeinsam mit dem Institut f{\"u}r Numerische Methoden und Informatik im Bauwesen an der TU Darmstadt durchgef{\"u}hrten Forschungsprojekts ist die Entwicklung einer netzwerkbasierten Kooperationsplattform zur Unterst{\"u}tzung von geotechnischen Ingenieurplanungen. Daher konzentriert sich das Forschungsprojekt auf die Abbildung und Koordination der Planungsprozesse f{\"u}r Projekte des Konstruktiven Ingenieurbaus vor dem Hintergrund der stark arbeitsteiligen Projektbearbeitung in einer verteilten Rechnerumgebung. Der Beitrag stellt die Abstraktion von Prozessmustern im Bauplanungsprozess als Basis f{\"u}r die dynamische Prozessmodellierung in einem Kooperationsmodell dar. Ziel ist es, durch die Identifikation der mit dem Entwurf und der Dimensionierung eines Bauteils verbundenen Planungs- und Abstimmungsprozesse einen bauteilbezogenen Katalog von Prozessmustern zu abstrahieren. Die einzelnen Prozessmuster werden in jedem Bauplanungsprozess dynamisch {\"u}ber geeignete Kopplungsmechanismen in das aktuelle Prozessmodell integriert, so dass die f{\"u}r den Bauplanungsprozess typischen Ver{\"a}nderungen der Konstruktion und der Zusammensetzung des Planungsteams im Prozessmodell ber{\"u}cksichtigt werden k{\"o}nnen. Dazu werden im Beitrag die bisherigen Ergebnisse der Analyse des Planungsprozesses eines großen innerst{\"a}dtischen Bauvorhabens, das als Referenzobjekt dient, sowie typischer Planungsszenarien in der Geotechnik vorgestellt. Anschließend werden Grundlagen und methodische Ans{\"a}tze zur Modellierung von Prozessen mit der Methode der farbigen Petri-Netze mit individuellen Marken vorgestellt. Anhand von Beispielen f{\"u}r bauteilorientierte Prozessmuster wird die Funktionalit{\"a}t der Prozessmuster in sich und im gegenseitigen Zusammenspiel erl{\"a}utert},
  subject      = {Geotechnik},
  language  = {de}
}
@inproceedings{Pham,
  author    = {Pham, Hoang Anh},
  title     = {ADAPTIVE EXCITATION FOR SELECTIVE SENSITIVITY-BASED STRUCTURAL IDENTIFICATION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3001},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30015},
  pages     = {9},
  abstract  = {Major problems of applying selective sensitivity to system identification are requirement of precise knowledge about the system parameters and realization of the required system of forces. This work presents a procedure which is able to deriving selectively sensitive excitation by iterative experiments. The first step is to determine the selectively sensitive displacement and selectively sensitive force patterns. These values are obtained by introducing the prior information of system parameters into an optimization which minimizes the sensitivities of the structure response with respect to the unselected parameters while keeping the sensitivities with respect to the selected parameters as a constant. In a second step the force pattern is used to derive dynamic loads on the tested structure and measurements are carried out. An automatic control ensures the required excitation forces. In a third step, measured outputs are employed to update the prior information. The strategy is to minimize the difference between a predicted displacement response, formulated as function of the unknown parameters and the measured displacements, and the selectively sensitive displacement calculated in the first step. With the updated values of the parameters a re-analysis of selective sensitivity is performed and the experiment is repeated until the displacement response of the model and the actual structure are conformed. As an illustration a simply supported beam made of steel, vibrated by harmonic excitation is investigated, thereby demonstrating that the adaptive excitation can be obtained efficiently.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{MostBucher,
  author    = {Most, Thomas and Bucher, Christian},
  title     = {ADAPTIVE RESPONSE SURFACE APPROACH USING ARTIFICIAL NEURAL NETWORKS AND MOVING LEAST SQUARES},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2992},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29922},
  pages     = {13},
  abstract  = {In engineering science the modeling and numerical analysis of complex systems and relations plays an important role. In order to realize such an investigation, for example a stochastic analysis, in a reasonable computational time, approximation procedure have been developed. A very famous approach is the response surface method, where the relation between input and output quantities is represented for example by global polynomials or local interpolation schemes as Moving Least Squares (MLS). In recent years artificial neural networks (ANN) have been applied as well for such purposes. Recently an adaptive response surface approach for reliability analyses was proposed, which is very efficient concerning the number of expensive limit state function evaluations. Due to the applied simplex interpolation the procedure is limited to small dimensions. In this paper this approach is extended for larger dimensions using combined ANN and MLS response surfaces for evaluating the adaptation criterion with only one set of joined limit state points. As adaptation criterion a combination by using the maximum difference in the conditional probabilities of failure and the maximum difference in the approximated radii is applied. Compared to response surfaces on directional samples or to plain directional sampling the failure probability can be estimated with a much smaller number of limit state points.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{EckardtKoenke,
  author    = {Eckardt, Stefan and K{\"o}nke, Carsten},
  title     = {ADAPTIVE SIMULATION OF THE DAMAGE BEHAVIOR OF CONCRETE USING HETEROGENEOUS MULTISCALE MODELS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2947},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29478},
  pages     = {15},
  abstract  = {In this paper an adaptive heterogeneous multiscale model, which couples two substructures with different length scales into one numerical model is introduced for the simulation of damage in concrete. In the presented approach the initiation, propagation and coalescence of microcracks is simulated using a mesoscale model, which explicitly represents the heterogeneous material structure of concrete. The mesoscale model is restricted to the damaged parts of the structure, whereas the undamaged regions are simulated on the macroscale. As a result an adaptive enlargement of the mesoscale model during the simulation is necessary. In the first part of the paper the generation of the heterogeneous mesoscopic structure of concrete, the finite element discretization of the mesoscale model, the applied isotropic damage model and the cohesive zone model are briefly introduced. Furthermore the mesoscale simulation of a uniaxial tension test of a concrete prism is presented and own obtained numerical results are compared to experimental results. The second part is focused on the adaptive heterogeneous multiscale approach. Indicators for the model adaptation and for the coupling between the different numerical models will be introduced. The transfer from the macroscale to the mesoscale and the adaptive enlargement of the mesoscale substructure will be presented in detail. A nonlinear simulation of a realistic structure using an adaptive heterogeneous multiscale model is presented at the end of the paper to show the applicability of the proposed approach to large-scale structures.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{WallFoersterNeumannetal.,
  author    = {Wall, Wolfgang A. and F{\"o}rster, Christiane and Neumann, Malte and Ramm, Ekkehard},
  title     = {ADVANCES IN FLUID-STRUCTURE INTERACTION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2916},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29161},
  pages     = {17},
  abstract  = {For the dynamic behavior of lightweight structures like thin shells and membranes exposed to fluid flow the interaction between the two fields is often essential. Computational fluid-structure interaction provides a tool to predict this interaction and complement or eventually replace expensive experiments. Partitioned analyses techniques enjoy great popularity for the numerical simulation of these interactions. This is due to their computational superiority over simultaneous, i.e. fully coupled monolithic approaches, as they allow the independent use of suitable discretization methods and modular analysis software. We use, for the fluid, GLS stabilized finite elements on a moving domain based on the incompressible instationary Navier-Stokes equations, where the formulation guarantees geometric conservation on the deforming domain. The structure is discretized by nonlinear, three-dimensional shell elements. Commonly used sequential staggered coupling schemes may exhibit instabilities due to the so-called artificial added mass effect. As best remedy to this problem subiterations should be invoked to guarantee kinematic and dynamic continuity across the fluid-structure interface. Since iterative coupling algorithms are computationally very costly, their convergence rate is very decisive for their usability. To ensure and accelerate the convergence of this iteration the updates of the interface position are relaxed. The time dependent, 'optimal' relaxation parameter is determined automatically without any user-input via exploiting a gradient method or applying an Aitken iteration scheme.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{ZangSommer,
  author    = {Zang, Di and Sommer, G.},
  title     = {ALGEBRAICALLY EXTENDED 2D IMAGE REPRESENTATION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3039},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30396},
  pages     = {10},
  abstract  = {We present an algebraically extended 2D image representation in this paper. In order to obtain more degrees of freedom, a 2D image is embedded into a certain geometric algebra. Combining methods of differential geometry, tensor algebra, monogenic signal and quadrature filter, the novel 2D image representation can be derived as the monogenic extension of a curvature tensor. The 2D spherical harmonics are employed as basis functions to construct the algebraically extended 2D image representation. From this representation, the monogenic signal and the monogenic curvature signal for modeling intrinsically one and two dimensional (i1D/i2D) structures are obtained as special cases. Local features of amplitude, phase and orientation can be extracted at the same time in this unique framework. Compared with the related work, our approach has the advantage of simultaneous estimation of local phase and orientation. The main contribution is the rotationally invariant phase estimation, which enables phase-based processing in many computer vision tasks.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{SchererGrinewitschus,
  author    = {Scherer, Klaus and Grinewitschus, Viktor},
  title     = {AMBIENT INTELLIGENCE IN RAUM UND BAU INNOVATIVE TECHNIKASSISTENZ F{\"U}R FACILITY MANAGEMENT UND ANWENDUNG},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2914},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29140},
  pages     = {9},
  abstract  = {Mikroelektronik und Mikrosystemtechnik in Kombination mit Informations- und Kommunikations-technik erlauben es mittlerweile, Rechenleistung und Kommunikationsf{\"a}higkeit in kleinsten Formaten, mit geringsten Energien und zu g{\"u}nstigen Preisen nutzbringend in unser privates und berufliches Umfeld einzubringen. Beispiele sind Notebook-PC, PDA, Handy und das Navigationßystem im Auto. Aber auch eingebettete Elektronik in Komponenten, Ger{\"a}ten und Systemen ist nunmehr zur Selbstverst{\"a}ndlichkeit geworden. Bekannte Beispiele aus der Haustechnik sind Mikroprozeßoren in Heizungs- und Alarmanlagen und aber auch in Komponenten wie Brand- und Bewegungsmelder. Wir n{\"a}hern uns dem vor einigen Jahren noch als Vision bezeichneten Zustand der {\"u}berall vorhandenen elektronischen Rechenleistung (engl. ubiquitous computing) bzw. des von Informationsverarbeitung durchdrungenen t{\"a}glichen Umfelds (engl. pervasive computing). Werden die TGA-Komponenten genau wie die gr{\"o}ßeren Computerkomponenten (z.B. PCs, Server) {\"u}ber Datenschnittstellen zu r{\"a}umlich verteilten Netzwerken verkn{\"u}pft (z.B. Internet, Intranet) und mit einer system{\"u}bergreifenden und ad{\"a}quaten Intelligenz (Software) programmiert, so k{\"o}nnen neuartige Funktionalit{\"a}ten im jeweiligen Anwendungsumfeld (engl. ambient intelligence, kurz AmI, [1]) entstehen. Hier liegt bei Geb{\"a}uden und R{\"a}umen speziell eine große Chance, die bislang einer ganzheitlichen Systemkonzeption unter Einschluß von Architektur, Geb{\"a}udephysik, technischer Geb{\"a}udeausr{\"u}stung (TGA) und Geb{\"a}udeautomation (GA) im Wege stehende Gewerketrennung zu {\"u}berwinden. Es entstehen f{\"u}r div. Anwendungszwecke systemisch integrierte >smart areas< (nach Prof. Becker, FH Biberach). Im vorliegenden Beitrag erl{\"a}uterte Beispiele f{\"u}r AmI-L{\"o}sungen im Immobilienbereich sind Raumsysteme zur automatischen und sicheren Erkennung von Notf{\"a}llen, z.B. in Pflegeheimen; sich automatisch an die Nutzung und den Nutzer bzgl. Klima und Beleuchtung adaptierende Raumsysteme im B{\"u}ro- oder Hotelbereich und die elektronische Aßistenz des Bau- und Betriebsprozeßes von Geb{\"a}uden. Im Duisburger inHaus-Innovationszentrum f{\"u}r Intelligente Raum- und Geb{\"a}udesysteme der Fraunhofer-Gesellschaft wurden in den letzten Jahren erste L{\"o}sungen mit diesem neuartigen Ansatz konzipiert, entwickelt und erprobt. Der Beitrag beschreibt nach einer kurzen Skizzierung des Ambient-Intelligence-Ansatzes an Beispielen M{\"o}glichkeiten f{\"u}r den Transfer dieser neuen Technologie in den Raum- und Geb{\"a}udebereich. Es folgt eine abschließende Zusammenfaßung und eine Einsch{\"a}tzung der Zukunftspotenziale der Ambient Intelligence in Raum und Bau.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{MostEckardtSchraderetal.,
  author    = {Most, Thomas and Eckardt, Stefan and Schrader, Kai and Deckner, T.},
  title     = {AN IMPROVED COHESIVE CRACK MODEL FOR COMBINED CRACK OPENING AND SLIDING UNDER CYCLIC LOADING},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2993},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29933},
  pages     = {20},
  abstract  = {The modeling of crack propagation in plain and reinforced concrete structures is still a field for many researchers. If a macroscopic description of the cohesive cracking process of concrete is applied, generally the Fictitious Crack Model is utilized, where a force transmission over micro cracks is assumed. In the most applications of this concept the cohesive model represents the relation between the normal crack opening and the normal stress, which is mostly defined as an exponential softening function, independently from the shear stresses in tangential direction. The cohesive forces are then calculated only from the normal stresses. By Carol et al. 1997 an improved model was developed using a coupled relation between the normal and shear damage based on an elasto-plastic constitutive formulation. This model is based on a hyperbolic yield surface depending on the normal and the shear stresses and on the tensile and shear strength. This model also represents the effect of shear traction induced crack opening. Due to the elasto-plastic formulation, where the inelastic crack opening is represented by plastic strains, this model is limited for applications with monotonic loading. In order to enable the application for cases with un- and reloading the existing model is extended in this study using a combined plastic-damage formulation, which enables the modeling of crack opening and crack closure. Furthermore the corresponding algorithmic implementation using a return mapping approach is presented and the model is verified by means of several numerical examples. Finally an investigation concerning the identification of the model parameters by means of neural networks is presented. In this analysis an inverse approximation of the model parameters is performed by using a given set of points of the load displacement curves as input values and the model parameters as output terms. It will be shown, that the elasto-plastic model parameters could be identified well with this approach, but require a huge number of simulations.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{SariyildizSchwenck1997,
  author    = {Sariyildiz, Sevil and Schwenck, M.},
  title     = {An Integrated Software Environment for the Architectural Design Process},
  doi       = {10.25643/bauhaus-universitaet.444},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4447},
  year      = {1997},
  abstract  = {The general motivation of this research is to develop software to support the handling of the increased complexity of architectural design. In this paper we describe a system providing general support during the whole process. Instead of only developing design tools we are also addressing the problem of the operating environment of these tools. We conclude that design tools have to be integrated in an open, modular, distributed, user friendly and efficient environment. Two major fields have to be addressed - the development of design tools and the realisation of an integrated system as their operation environment. We will briefly focus on the latter by discussing known technologies in the field of information technology and other design disciplines that can be used to realise such an environment. Regarding the first subject we have to state the need of a detailed tool specification. As a solution we suggest a strategy where the tool functions are specified on the basis of a transformation, where a hierarchical process model is mapped into specifications of different design tools realising appropriate support for all sub-processes of architectural design. Using this strategy the main steps to develop such a support system are: implementation of a framework as basis for the integrated design system decision whether the tool specification are already implemented in available tools in this case these tools can be integrated using known methods for tool coupling otherwise new design tools have to be developed according to the framework},
  subject      = {Architektur},
  language  = {en}
}
@inproceedings{WoszczynaKaminskiMajetal.,
  author    = {Woszczyna, Anna and Kaminski, Mieczysław and Maj, Marek and Ubysz, Andrzej},
  title     = {ANALYSING THE INFLUENCE OF THE REINFORCED CONCRETE CHIMNEY GEOMETRY CHANGES ON THE STRESSES IN THE CHIMNEY SHAFT},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3038},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30388},
  pages     = {7},
  abstract  = {Analysis of the reinforced concrete chimney geometry changes and their influence on the stresses in the chimney mantle was made. All the changes were introduced to a model chimney and compared. Relations between the stresses in the mantle of the chimney and the deformations determined by the change of the chimney's vertical axis geometry were investigated. The vertical axis of chimney was described by linear function (corresponding to the real rotation of the chimney together with the foundation), and by parabolic function (corresponding to the real dislocation of the chimney under the influence of the horizontal forces - wind). The positive stress pattern in the concrete as well as the negative stress pattern in the reinforcing steel have been presented. The two cases were compared. Analysis of the stress changes in the chimney mantle depending on the modification in the thickness of the mantle (the thickness of the chimney mantle was altered in the linear or the abrupt way) was carried out. The relation between the stresses and the chimney's diameter change from the bottom to the top of the chimney was investigated. All the analyses were conducted by means of a specially developed computer program created in Mathematica environment. The program makes it also possible to control calculations and to visualize the results of the calculations at every stage of the calculation process.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{RyanKrausshar,
  author    = {Ryan, John and Kraußhar, Rolf S{\"o}ren},
  title     = {ANALYSIS OF DIRAC OPERATORS ON SOME CONFORMALLY FLAT MANIFOLDS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3008},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30081},
  pages     = {5},
  abstract  = {In this paper we shall review the role of Dirac operators arising in Clifford analysis over some examples of conformally flat manifolds.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Knyziak,
  author    = {Knyziak, Piotr},
  title     = {ANALYSIS THE TECHNICAL STATE FOR LARGE-PANEL RESIDENTIAL BUILDINGS BEHIND ASSISTANCE OF ARTIFICIAL NEURAL NETWORKS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2979},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29792},
  pages     = {9},
  abstract  = {This paper presents two new methods for analysis of a technical state of large-panel residential buildings. The first method is based on elements extracted from the classical methods and on data about repairs and modernization collected from building documentations. The technical state of a building is calculated as a sum of several groups of elements defining the technical state. The deterioration in this method depends on: - time, which has passed since last repair of element or time which has passed since construction, - estimate of the state of element groups which can be determined on basis of yearly controls. This is a new unique method. it is easy to use, does not need expertise. The required data could be extracted easily from building documentations. For better accuracy the data from building inspections should be applied (in Poland inspections are made every year). The second method is based on the extracted data processing by means of the artificial neural networks. The aim is to learn the artificial neural network configurations for a set of data containing values of the technical state and information about building repairs for last years (or other information and building parameters) and next to analyse new buildings by the instructed neural network. The second profit from using artificial neural networks is the reduction of number of parameters. Instead of more then 40 parameters describing building, about 6-12 are usually sufficient for satisfactory accuracy. This method could have lower accuracy but it is less prone to data errors.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Krasnov,
  author    = {Krasnov, Yakov},
  title     = {ANALYTIC FUNCTIONS IN OPERATOR VARIABLES AS SOLUTION TO PDES},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2982},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29822},
  pages     = {16},
  abstract  = {Procedures of a construction of general solutions for some classes of partial differential equations (PDEs) are proposed and a symmetry operators approach to the raising the orders of the polynomial solutions to linear PDEs are develops. We touch upon an ''operator analytic function theory'' as the solution of a frequent classes of the equations of mathematical physics, when its symmetry operators forms vast enough space. The MAPLE© package programs for the building the operator variables is elaborated also.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{KoenigLang,
  author    = {K{\"o}nig, Markus and Lang, H.},
  title     = {ANWENDUNG DES CASE-BASED REASONING BEI DER ERMITTLUNG VON VARIANTEN F{\"u}R DEN OBERBAU VON VERKEHRSFL{\"A}CHEN},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2980},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29808},
  pages     = {9},
  abstract  = {F{\"u}r die Ausf{\"u}hrung des Oberbaus von Verkehrsfl{\"a}chen existiert in Abh{\"a}ngigkeit von projektspezifischen Voraussetzungen eine Vielzahl von verschiedenen Varianten. Aufgrund von Erfahrungen der Projektplaner werden bei {\"a}hnlichen Voraussetzungen h{\"a}ufig gleichartige Ausf{\"u}hrungsvarianten gew{\"a}hlt. Um eine m{\"o}gliche L{\"o}sungsvariante f{\"u}r den Straßenoberbau zu erhalten, sollten daher nicht nur die gesetzlichen Richtlinien sondern auch bereits beendete Projekte ber{\"u}cksichtigt werden. Im Rahmen eines Wissenschaftlichen Kollegs an der Bauhaus-Universit{\"a}t Weimar wurde die Anwendung des Case-Based Reasoning f{\"u}r die Auswahl von Ausf{\"u}hrungsvarianten f{\"u}r den Straßenoberbau untersucht. In diesem Beitrag werden die grundlegenden Konzepte des Case-Based Reasoning und die Bestimmung von {\"a}hnlichen Varianten anhand einfacher Beispiele aus dem Straßenoberbau dargestellt.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{MisyuraVolkova,
  author    = {Misyura, E. and Volkova, Viktorija},
  title     = {APPLICATION OF THE MATHEMATICAL METHODS TO INVESTIGATION OF DYNAMICAL PROPERTIES OF A CABLE},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3031},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30313},
  pages     = {7},
  abstract  = {The paper is devoted to the investigation of dynamical behavior of a cable under influence of various types of excitations. Such element has a low rigidity and is sensitive to dynamic effect. The structural scheme is a cable which ends are located at different level. The analysis of dynamical behavior of the cable under effect of kinematical excitation which is represented by the oscillations of the upper part of tower is given. The scheme of cable is accepted such, that lower end of an inclined cable is motionless. The motion of the upper end is assumed only in horizontal direction. The fourth-order Runge-Kutta method was realized in software. The fast Fourier transform was used for spectral analysis. Standard graphical software was adopted for presenting results of investigations. The mathematical model of oscillations of a cable was developed by the account of the viscous damping. The analysis of dynamical characteristics of a cable for various parameters of damping and kinematical excitation was carried out. The time series, spectral characteristics and amplitude-frequencies characteristics was obtained. The resonance amplitude for different oscillating regimes was estimated. It is noted that increasing of the coefficient of the viscous damping and decreasing of the amplitude of tower's oscillations reduces the value of the critical frequency and the resonant amplitudes.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{KraussharConstalesGuerlebecketal.,
  author    = {Kraußhar, Rolf S{\"o}ren and Constales, Denis and G{\"u}rlebeck, Klaus and Spr{\"o}ßig, Wolfgang},
  title     = {APPLICATIONS OF QUATERNIONIC ANALYSIS IN ENGINEERING},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2912},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29128},
  pages     = {8},
  abstract  = {The quaternionic operator calculus can be applied very elegantly to solve many important boundary value problems arising in fluid dynamics and electrodynamics in an analytic way. In order to set up fully explicit solutions. In order to apply the quaternionic operator calculus to solve these types of boundary value problems fully explicitly, one has to evaluate two types of integral operators: the Teodorescu operator and the quaternionic Bergman projector. While the integral kernel of the Teodorescu transform is universal for all domains, the kernel function of the Bergman projector, called the Bergman kernel, depends on the geometry of the domain. Recently the theory of quaternionic holomorphic multiperiodic functions and automorphic forms provided new impulses to set up explicit representation formulas for large classes of hyperbolic polyhedron type domains. These include block shaped domains, wedge shaped domains (with or without additional rectangular restrictions) and circular symmetric finite and infinite cylinders as particular subcases. In this talk we want to give an overview over the recent developments in this direction.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Volkova,
  author    = {Volkova, Viktorija},
  title     = {APPLICTION OF THE PHASE TRAJECTORIES MAPPING TO IDENTIFICATION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3032},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30329},
  pages     = {7},
  abstract  = {The reduction of oscillation amplitudes of structural elements is necessary not only for maintenance of their durability and longevity but also for elimination of a harmful effect of oscillations on people and technology operations. The dampers are widely applied for this purpose. One of the most widespread models of structural friction forces having piecewise linear relation to displacement was analysed. T The author suggests the application of phase trajectories mapping in plane "acceleration - displacement". Unlike the trajectories mapping in a plane "velocity - displacement", they don't require large number of geometrical constructions for identification of the characteristics of dynamic systems. It promotes improving the accuracy. The analytical assumptions had been verified by numerical modeling. The results show good enough coincide between numerical and analytical estimation of dissipative characteristic.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{GruberValdman,
  author    = {Gruber, Peter and Valdman, J.},
  title     = {APPROXIMATE SOLUTION OF ELASTOPLASTIC PROBLEMS BASED ON THE MOREAU-YOSIDA THEOREM},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2960},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29602},
  pages     = {8},
  abstract  = {We propose a new approach to the numerical solution of quasi-static elastic-plastic problems based on the Moreau-Yosida theorem. After the time discretization, the problem is expressed as an energy minimization problem for unknown displacement and plastic strain fields. The dependency of the minimization functional on the displacement is smooth whereas the dependency on the plastic strain is non-smooth. Besides, there exists an explicit formula, how to calculate the plastic strain from a given displacement field. This allows us to reformulate the original problem as a minimization problem in the displacement only. Using the Moreau-Yosida theorem from the convex analysis, the minimization functional in the displacements turns out to be Frechet-differentiable, although the hidden dependency on the plastic strain is non-differentiable. The seconds derivative exists everywhere apart from the elastic-plastic interface dividing elastic and plastic zones of the continuum. This motivates to implement a Newton-like method, which converges super-linearly as can be observed in our numerical experiments.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{HauschildHuebler2000,
  author    = {Hauschild, Thomas and H{\"u}bler, Reinhard},
  title     = {Aspekte der verteilten Bauwerksmodellierung in kooperativen Entwurfsumgebungen auf Basis dynamischer Objektstrukturen},
  doi       = {10.25643/bauhaus-universitaet.591},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-5912},
  year      = {2000},
  abstract  = {Entwurfsprozesse im Bauwesen sind hochgradig kooperative Prozesse mit alternierenden Phasen asynchroner und synchroner Teamarbeit. Die Informationen {\"u}ber den aktuellen Entwurfsgegenstand k{\"o}nnen als Objektstrukturen modelliert werden, die in entsprechenden Modellverwaltungssystemen gespeichert werden. Bei der Realisierung von kooperativ nutzbaren Umgebungen f{\"u}r den Bauwerksentwurf sind jedoch bei der Auswahl von Basistechniken spezifische Anforderungen von CSCW-Applikationen zu beachten, die bestimmte traditionelle Verfahren nicht erf{\"u}llen. Neben verschiedenen Auswirkungen auf das Interaktionsverhalten der Entwurfsumgebung spielt die cooperation awareness der eingesetzten Mechanismen eine bedeutende Rolle. Mechanismen zur Zugriffskontrolle sind in netzwerkbasierten Mehrbenutzerumgebungen essentiell, jedoch sind herk{\"o}mmliche Verfahren zu unflexibel und nicht hinreichend ausdrucksstark. Eine adaptierte und erweiterte Variante des Matrixverfahrens ist f{\"u}r die Anwendung in Modellverwaltungssystemen geeignet. Ebenso muss bei der Auswahl von Mechanismen zur Nebenl{\"a}ufigkeitskontrolle Augenmerk auf dessen Eignung in Groupware-Systemen gelegt werden. Bei der Unterst{\"u}tzung asynchroner Kooperation k{\"o}nnen Lock-Verfahren auf die Informationen in Modellverwaltungssystemen angewandt werden. F{\"u}r die Applikationen f{\"u}r synchrone Teamarbeit m{\"u}ssen derartige Mechanismen auf die gemeinsamen Informationsbest{\"a}nde sowie auf Systemressourcen der Entwurfsumgebung angewendet werden. Hierf{\"u}r sind floor-passing'-Verfahren geeignet; die Anwendbarkeit von Transformationsverfahren sollte f{\"u}r die konkret umzusetzende Applikation gepr{\"u}ft werden.},
  subject      = {Bauwerk},
  language  = {de}
}
@inproceedings{Wittenberg,
  author    = {Wittenberg, Reinhold},
  title     = {AUFBAU EINES MANAGEMENT-INFORMATIONS-SYSTEMS (M-I-S) UND BAUSTELLEN-CONTROLLINGS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3035},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30356},
  pages     = {7},
  abstract  = {Die meisten Insolvenzen in Deutschland kommen aus der Bauindustrie. Die Gr{\"u}nde hierf{\"u}r sind vielschichtig, jedoch kann mittels eines modern ausgerichteten M-I-S und Baustellen-Controllings fr{\"u}hzeitig erkannt werden, wie sich die Baustellenergebnisse entwickeln. Hierzu ist es notwendig, dass die Arbeitskalkulation st{\"a}ndig auf dem Laufenden gehalten wird. Nur wenn dies geschieht, sind monatliche Soll-/ Ist-Vergleiche und eine Betrachtung der cost-to-complete m{\"o}glich und sinnvoll. Eine monatlich rollierende Prognose des Baustellenergebnisses zum Bauende erm{\"o}glicht, dass gravierende Ver{\"a}nderungen des Ergebnisses umgehend aufgedeckt werden. Nur in Kenntnis dieser Entwicklungen kann das Management fr{\"u}hzeitig (im Sinne eines Fr{\"u}hwarnsystems) agieren und Steuerungsmaßnahmen ergreifen. Die Ergebnisprognose zum Bauende ist allein als Steuerungsinstrument nicht ausreichend. Die Finanzsituation der Baustelle muß auch regelm{\"a}ßig gepr{\"u}ft werden, d.h. der Leistungsstand mit der Rechnungsstellung an den Bauherren abgeglichen sowie die unbezahlten Rechnungen des Bauherren {\"u}berpr{\"u}ft werden. Das beste Prognoseergebnis ist wertlos, wenn der Bauherr seine bezogenen Leistungen nicht verg{\"u}tet. Die wirtschaftlichen Daten stehen den Verantwortlichen online im Baustellen-Informations-System (B-I-S) zur Verf{\"u}gung. Ein Ampelsystem verdeutlicht die wirtschaftliche Lage der Baustelle.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{RichterDonath,
  author    = {Richter, Katharina and Donath, Dirk},
  title     = {AUGMENTING DESIGNERS MEMORY - REVISAL OF THE CASE-BASED REASONING PARADIGM IN ARCHITECTURAL EDUCATION AND DESIGN},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3004},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30047},
  pages     = {5},
  abstract  = {This research focuses on the Case-based Reasoning paradigm in architectural design (CBD) and education. Initial point for further exploring this only seemingly comprehensive investigated field of research constitutes the finding that promising looking concepts exist but that they do not play a role in daily routine of designing architects or in university education. In search of reasons for this limited success a critical review of the CBR approach to architectural education and design was performed. The aim was to identify gaps in the CBD research and to discover potential fields of research within CBR research in architectural education and design to improve acceptance and practical suitability. Two major shortcomings could be identified. In the first place the way retrieval mechanisms of systems under investigation relate to the needs of architectural designers and students. At second: Successful CBD systems rely on the work of third-parties in sharing their experiences with others and filling the databases with relevant cases. Therefore two questions remain unanswered: The question of which projects become part of the database and how get existing projects not only described but evaluated. This is an essential task and prerequisite to meet the requirements of the underlying theory of CBR.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BubnerThierfelder2000,
  author    = {Bubner, Andre and Thierfelder, Jan},
  title     = {Austausch von planungsrelevanten Daten im Stahlbau},
  doi       = {10.25643/bauhaus-universitaet.614},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-6146},
  year      = {2000},
  abstract  = {Datenaustausch, Daten resp. Produktdatenmodelle sind seit mehreren Jahren Themen in der Forschung. Verschiedene Forschungsprojekte und Initiativen diverser Firmen f{\"u}hrten zu bereichs{\"u}bergreifenden Ans{\"a}tzen wie IFC und verschiedenen STEP-AP´s. Speziell im Stahlbau sind die Projekte >Produktschnittstelle Stahlbau< und >CIMsteel< entwickelt, weiterentwickelt und {\"u}berarbeitet worden. Als Weiterentwicklung der bisher existierenden Austauschformate versuchen neuere Ans{\"a}tze den Nutzen {\"u}ber die reine Daten{\"u}bermittlung hinaus zu erweitern. So integrieren diese L{\"o}sungsvorschl{\"a}ge Aspekte der Kommunikation, der Zusammenarbeit und des Managements. Des weiteren {\"u}bernehmen sie Aufgaben der Daten- und Modellverwaltung. Somit erfolgt eine digitale Abbildung unter Einbezug s{\"a}mtlicher ermittelter Daten. Resultierend aus den besonderen Randbedingungen im Bauwesen, wird ein Bauwerksmodell aus untereinander in Beziehung gesetzten Dom{\"a}nenmodellen aufgebaut},
  subject      = {Datenaustausch},
  language  = {de}
}
@inproceedings{LourensvanRooyen,
  author    = {Lourens, Eliz-Mari and van Rooyen, G.C.},
  title     = {Automating Preliminary Column Force Calculations In Multy-Storey Buildings},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2986},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29864},
  pages     = {10},
  abstract  = {In civil engineering practice, values of column forces are often required before any detailed analysis of the structure has been performed. One of the reasons for this arises from the fast-tracked nature of the majority of construction projects: foundations are laid and base columns constructed whilst analysis and design are still in progress. A need for quick results when feasibility studies are performed or when evaluating the effect of design changes on supporting columns form other situations in which column forces are required, but where a detailed analysis to get these forces seems superfluous. Thus it was concluded that the development of an efficient tool for column force calculations, in which the extensive input required in a finite element analysis is to be avoided, would be highly beneficial. The automation of the process is achieved by making use of a Voronoi diagram. The Voronoi diagram is used a) for subdividing the floor into influence areas and b) as a basis for automatic load assignment. The implemented procedure is integrated into a CAD system in which the relevant geometric information of the floor, i.e. its shape and column layout, can be defined or uploaded. A brief description of the implementation is included. Some comparative results and considerations regarding the continuation of the study are given.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{KoenigSchmitt,
  author    = {K{\"o}nig, Reinhard and Schmitt, Gerhard},
  title     = {Backcasting and a new way of command in computational design : Proceedings},
  series = {CAADence in Architecture Conference},
  booktitle = {CAADence in Architecture Conference},
  editor    = {Szoboszlai, Mih{\´a}ly},
  address   = {Budapest},
  doi       = {10.25643/bauhaus-universitaet.2599},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20160622-25996},
  pages     = {15 -- 25},
  abstract  = {It's not uncommon that analysis and simulation methods are used mainly to evaluate finished designs and to proof their quality. Whereas the potential of such methods is to lead or control a design process from the beginning on. Therefore, we introduce a design method that move away from a "what-if" forecasting philosophy and increase the focus on backcasting approaches. We use the power of computation by combining sophisticated methods to generate design with analysis methods to close the gap between analysis and synthesis of designs. For the development of a future-oriented computational design support we need to be aware of the human designer's role. A productive combination of the excellence of human cognition with the power of modern computing technology is needed. We call this approach "cognitive design computing". The computational part aim to mimic the way a designer's brain works by combining state-of-the-art optimization and machine learning approaches with available simulation methods. The cognition part respects the complex nature of design problems by the provision of models for human-computation interaction. This means that a design problem is distributed between computer and designer. In the context of the conference slogan "back to command", we ask how we may imagine the command over a cognitive design computing system. We expect that designers will need to let go control of some parts of the design process to machines, but in exchange they will get a new powerful command on complex computing processes. This means that designers have to explore the potentials of their role as commanders of partially automated design processes. In this contribution we describe an approach for the development of a future cognitive design computing system with the focus on urban design issues. The aim of this system is to enable an urban planner to treat a planning problem as a backcasting problem by defining what performance a design solution should achieve and to automatically query or generate a set of best possible solutions. This kind of computational planning process offers proof that the designer meets the original explicitly defined design requirements. A key way in which digital tools can support designers is by generating design proposals. Evolutionary multi-criteria optimization methods allow us to explore a multi-dimensional design space and provide a basis for the designer to evaluate contradicting requirements: a task urban planners are faced with frequently. We also reflect why designers will give more and more control to machines. Therefore, we investigate first approaches learn how designers use computational design support systems in combination with manual design strategies to deal with urban design problems by employing machine learning methods. By observing how designers work, it is possible to derive more complex artificial solution strategies that can help computers make better suggestions in the future.},
  subject      = {CAD},
  language  = {en}
}
@inproceedings{WenderWillenbacherHuebler,
  author    = {Wender, K. and Willenbacher, Heiko and H{\"u}bler, Reinhard},
  title     = {BENUTZERAD{\"A}QUATE NAVIGATIONS- UND RECHERCHETECHNOLOGIEN F{\"U}R VERTEILTE DYNAMISCHE DIGITALE BAUWERKSMODELLE},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3034},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30349},
  pages     = {13},
  abstract  = {Hinsichtlich der Integration einzelner Bauwerkslebensphasen und der verschiedenen Beteiligten, insbesondere innerhalb von Bauplanungs- und Revitalisierungsprozessen, bestehen aktuell entscheidende Defizite. Die generelle Zielstellung der in diesem Beitrag vorgestellten Forschungsarbeiten besteht in der Unterst{\"u}tzung und Verbesserung der Integration durch die disziplin- und lebensphasen{\"u}bergreifende Bereitstellung s{\"a}mtlicher bauwerksbezogener Informationen. Dies erfordert einerseits geeignete Ans{\"a}tze zur Modellierung und Integration der vielf{\"a}ltigen disziplinspezifischen Daten, andererseits geeignete L{\"o}sungen, die einen globalen Zugriff, Navigation und Recherche im Gesamtdatenbestand erm{\"o}glichen. Die Modellierung und Verwaltung bauwerksbezogener Daten ist seit l{\"a}ngerem Gegenstand diverser Forschungsarbeiten. Im Rahmen des SFB 524 wurde ein eigener Ansatz basierend auf einem laufzeitdynamischen Partialmodellverbund entwickelt. Dieser wird in den wesentlichen Grundz{\"u}gen anderen Ans{\"a}tzen gegen{\"u}bergestellt. Den Schwerpunkt dieses Beitrags bildet jedoch die Entwicklung einer geeigneten flexiblen Navigations- und Rechercheschicht zu Realisierung projektglobaler Informationsrecherche. Aus der Sicht der Modellierung und Datenverwaltung wie auch aus der Sicht der Informationsrecherche und Informationspr{\"a}sentation in Planungsprozessen ergeben sich verschiedene Anforderungen an derartige Recherchewerkzeuge, wobei der wesentlichste Grundsatz maximale Flexibilit{\"a}t hinsichtlich verf{\"u}gbarer Darstellungstechniken und deren freie Kombination mit Techniken formaler Suchanfragen ist. Das entwickelte Systemkonzept basiert auf einem Framework, welches verschiedene Grundtypen von Recherchemodulen und deren Interaktionsprinzipien vorgibt. Einzelne Recherchemodule werden als Auspr{\"a}gungen dieser Modultypen realisiert und k{\"o}nnen je nach Bedarf laufzeitdynamisch in die Navigationsschicht integriert werden. Die technische Realisierung des Systems erfolgt im Umfeld vorhandener Prototypen aus vorangegangenen Forschungsaktivit{\"a}ten. Dieses technische Umfeld gibt verschiedene Rahmenbedingungen vor, welche im Vorfeld prototypischer Implementierungen verschiedene Adaptionen des generellen Systemkonzepts notwendig machen. Der vorliegende Beitrag stellt den aktuellen Entwicklungsstand der Systeml{\"o}sung aus konzeptioneller und technischer Sicht sowie erste prototypische Realisierungen von Recherchemodulen vor.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{KoenigTauscher,
  author    = {K{\"o}nig, Markus and Tauscher, Eike},
  title     = {BERECHNUNG VON BAUABL{\"A}UFEN MIT VERSCHIEDENEN AUSF{\"U}HRUNGSVARIANTEN},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2981},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29816},
  pages     = {11},
  abstract  = {Prozesse im Bauingenieurwesen sind komplex und beinhalten eine große Anzahl verschiedener Aufgaben mit vielen logischen Abh{\"a}ngigkeiten. Basierend auf diesen projektspezifischen Abh{\"a}ngigkeiten wird gew{\"o}hnlich ein Bauablaufplan manuell erstellt. In der Regel existieren mehrere Varianten und somit alternative Bauabl{\"a}ufe um ein Projekt zu realisieren. Welche dieser Ausf{\"u}hrungsvarianten zur praktischen Anwendung kommt, wird durch den jeweiligen Projektmanager bestimmt. Falls {\"A};nderungen oder St{\"o}rungen w{\"a}hrend des Bauablaufs auftreten, m{\"u}ssen die davon betroffenen Aufgaben und Abl{\"a}ufe per Hand modifiziert und alternative Aufgaben sowie Abl{\"a}ufe stattdessen ausgef{\"u}hrt werden. Diese Vorgehensweise ist oft sehr aufw{\"a}ndig und teuer. Aktuelle Forschungsans{\"a}tze besch{\"a}ftigen sich mit der automatischen Generierung von Bauabl{\"a}ufen. Grundlage sind dabei Aufgaben mit ihren erforderlichen Voraussetzungen und erzeugten Ergebnissen. Im Rahmen dieses Beitrags wird eine Methodik vorgestellt, um Bauabl{\"a}ufe mit Ausf{\"u}hrungsvarianten in Form von Workflow-Netzen zu jeder Zeit berechnen zu k{\"o}nnen. Die vorgestellte Methode wird anhand eines Beispiels aus dem Straßenbau schematisch dargestellt.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{CacaoConstalesKrausshar,
  author    = {Cacao, Isabel and Constales, Denis and Kraußhar, Rolf S{\"o}ren},
  title     = {BESSEL FUNCTIONS AND HIGHER DIMENSIONAL DIRAC TYPE EQUATIONS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2936},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29366},
  pages     = {8},
  abstract  = {In this paper we study the structure of the solutions to higher dimensional Dirac type equations generalizing the known λ-hyperholomorphic functions, where λ is a complex parameter. The structure of the solutions to the system of partial differential equations (D- λ) f=0 show a close connection with Bessel functions of first kind with complex argument. The more general system of partial differential equations that is considered in this paper combines Dirac and Euler operators and emphasizes the role of the Bessel functions. However, contrary to the simplest case, one gets now Bessel functions of any arbitrary complex order.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Kovalev1997,
  author    = {Kovalev, M.},
  title     = {CAD and Discrete Optimization},
  doi       = {10.25643/bauhaus-universitaet.421},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4214},
  year      = {1997},
  abstract  = {Review of Discrete Optimization Techniques for CAD Discrete optimization in the structure design Morphological method The alternative graph approach Convex discrete optimization without objective function Matroidal Decomposition in design Decomposition of layered matrices Discrete Optimization in Designing Packing problem Optimal arrangement of rectangles and shortest paths in L1-metrics Partition problems Discrete optimization in computational geometry and computer graphics Maxima of a point set on the plane Triangulation One of the main problems in computer graphics is removing hidden lines and surfaces},
  subject      = {CAD},
  language  = {en}
}
@inproceedings{Huhn2003,
  author    = {Huhn, Michael},
  title     = {CAD by XML - Was XML im Planungssystem leisten kann},
  doi       = {10.25643/bauhaus-universitaet.315},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-3152},
  year      = {2003},
  abstract  = {In Bauplanungssystemen k{\"o}nnen XML-Technologien in vielen Bereichen eingesetzt werden mit dem Ziel, diese Systeme modular und webf{\"a}hig zu gestalten. Der Einsatz lohnt als Basis-Datenstruktur f{\"u}r verschiedene rechnerinterne Modelle, Steuerungsstruktur f{\"u}r Customizing von Anwendungen, Bindeglied zwischen objektbasierten Systemen, Kommunikationsprotokoll zwischen Komponenten. Es ist m{\"o}glich, komplexe Objekte aus dem Planungsalltag mittels XML arzustellen, zu speichern und zu verarbeiten. Es ist m{\"o}glich, entsprechende Komponenten im Netz zu verteilen bzw. {\"u}ber Internet zu verbinden. Die heute dominierende Sicht auf XML als Austauschmedium wird erg{\"a}nzt um die Idee eines XML-basierten Systems: Entwurfsobjekte k{\"o}nnen als >XML-Objekte< formuliert und im Sinne eines late binding verwendet werden.},
  subject      = {Bauplanung},
  language  = {de}
}
@inproceedings{SeidelGasserWerner,
  author    = {Seidel, Tilman and Gasser, Ingenuin and Werner, Bodo},
  title     = {CAR FOLLOWING MODELS FOR PHENOMENONS ON THE HIGHWAY},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3018},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30187},
  pages     = {8},
  abstract  = {Car following models are used to describe the behavior of a number of cars on the road dependent on the distance to the car in front. We introduce a system of ordinary differential equations and perform a theoretical and numerical analysis in order to find solutions that reflect various traffic situations. We present three different variations of the model motivated by reality.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BrackxDeSchepperSommen,
  author    = {Brackx, Fred and De Schepper, Nele and Sommen, Frank},
  title     = {Clifford-Hermite and Two-Dimensional Clifford-Gabor Filters For Early Vision},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2930},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29303},
  pages     = {22},
  abstract  = {Image processing has been much inspired by the human vision, in particular with regard to early vision. The latter refers to the earliest stage of visual processing responsible for the measurement of local structures such as points, lines, edges and textures in order to facilitate subsequent interpretation of these structures in higher stages (known as high level vision) of the human visual system. This low level visual computation is carried out by cells of the primary visual cortex. The receptive field profiles of these cells can be interpreted as the impulse responses of the cells, which are then considered as filters. According to the Gaussian derivative theory, the receptive field profiles of the human visual system can be approximated quite well by derivatives of Gaussians. Two mathematical models suggested for these receptive field profiles are on the one hand the Gabor model and on the other hand the Hermite model which is based on analysis filters of the Hermite transform. The Hermite filters are derivatives of Gaussians, while Gabor filters, which are defined as harmonic modulations of Gaussians, provide a good approximation to these derivatives. It is important to note that, even if the Gabor model is more widely used than the Hermite model, the latter offers some advantages like being an orthogonal basis and having better match to experimental physiological data. In our earlier research both filter models, Gabor and Hermite, have been developed in the framework of Clifford analysis. Clifford analysis offers a direct, elegant and powerful generalization to higher dimension of the theory of holomorphic functions in the complex plane. In this paper we expose the construction of the Hermite and Gabor filters, both in the classical and in the Clifford analysis framework. We also generalize the concept of complex Gaussian derivative filters to the Clifford analysis setting. Moreover, we present further properties of the Clifford-Gabor filters, such as their relationship with other types of Gabor filters and their localization in the spatial and in the frequency domain formalized by the uncertainty principle.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{DoganArditiGunaydin,
  author    = {Dogan, Sevgi Zeynep and Arditi, D. and Gunaydin, H. Murat},
  title     = {COMPARISON OF ANN AND CBR MODELS FOR EARLY COST PREDICTION OF STRUCTURAL SYSTEMS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2942},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29421},
  abstract  = {Reasonably accurate cost estimation of the structural system is quite desirable at the early stages of the design process of a construction project. However, the numerous interactions among the many cost-variables make the prediction difficult. Artificial neural networks (ANN) and case-based reasoning (CBR) are reported to overcome this difficulty. This paper presents a comparison of CBR and ANN augmented by genetic algorithms (GA) conducted by using spreadsheet simulations. GA was used to determine the optimum weights for the ANN and CBR models. The cost data of twenty-nine actual cases of residential building projects were used as an example application. Two different sets of cases were randomly selected from the data set for training and testing purposes. Prediction rates of 84\% in the GA/CBR study and 89\% in the GA/ANN study were obtained. The advantages and disadvantages of the two approaches are discussed in the light of the experiments and the findings. It appears that GA/ANN is a more suitable model for this example of cost estimation where the prediction of numerical values is required and only a limited number of cases exist. The integration of GA into CBR and ANN in a spreadsheet format is likely to improve the prediction rates.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{SzolomickiBaranski,
  author    = {Szolomicki, Jerzy Pawel and Baranski, Jacek},
  title     = {COMPUTATIONAL SIMULATIONS FOR HOMOGENIZATION OF MASONRY STRUCTURES},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3026},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30265},
  pages     = {7},
  abstract  = {In this paper proposed the application of two-parameters damage model, based on non-linear finite element approach, to the analysis of masonry panels. Masonry is treated as a homogenized material, for which the material characteristics can be defined by using homogenization technique. The masonry panels subjected to shear loading are studied by using the proposed procedure within the framework of three-dimensional analyses. The nonlinear behaviour of masonry can be modelled using concepts of damage theory. In this case an adequate damage function is defined for taking into account different response of masonry under tension and compression states. Cracking can, therefore, be interpreted as a local damage effect, defined by the evolution of known material parameters and by one or several functions which control the onset and evolution of damage. The model takes into account all the important aspects which should be considered in the nonlinear analysis of masonry structures such as the effect of stiffness degradation due to mechanical effects and the problem of objectivity of the results with respect to the finite element mesh. Finally the proposed damage model is validated with a comparison with experimental results available in the literature.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{KrafczykToelkeNachtwey2003,
  author    = {Krafczyk, Manfred and Toelke, Jonas and Nachtwey, Bj{\"o}rn},
  title     = {Computational Steering in Civil Engineering},
  doi       = {10.25643/bauhaus-universitaet.11},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-112},
  year      = {2003},
  abstract  = {Computational Steering provides methods for the integration of modeling, simulation, visualization, data analysis and post processing. The user has full control over a running simulation and the possibility to modify objects (geometry and other properties), boundary conditions and other parameters of the system interactively. The objective of such a system is to explore the effects of changes made immediately and thus to optimize the target problem interactively. We present a computational steering based system for fluid flow problems in civil engineering. It is based on three software components as shown in figure 1. The modeler is the CAD-system AutoCAD, which offers a powerful programming interface allowing an efficient access to the geometric data. It also offers convenient manipulators for geometric objects. The simulation kernel is a Lattice-Boltzmann (LB) solver for the Navier-Stokes equations, which is especially suitable for instationary flows in complex geometries. For the visualization and postprocessing we use the software tool AVS, which provides a powerful programming interface and allows the efficient visualization of flow fields. These three components are interconnected through two communication modules and three interfaces as depicted in figure 1. Interface 1 is responsible for the transformation of the modified system for the simulation kernel, interface 2 is responsible for the proper preparation of the simulation data whereas interface 3 transforms the data from the modeler into a format suitable for the visualization system. The whole system is synchronized by the two communication modules.},
  subject      = {Bauwesen},
  language  = {de}
}
@inproceedings{ContensinMaltret1997,
  author    = {Contensin, M. and Maltret, J.-L.},
  title     = {Computer Aided Lighting for architects and designers},
  doi       = {10.25643/bauhaus-universitaet.448},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4488},
  year      = {1997},
  abstract  = {Designing lightings in a 3D-scene is a general complex task for building conception as it is submitted to many constraints such as aesthetics or ergonomics. This is often achieved by experimental trials until reaching an acceptable result. Several rendering softwares (such as Radiance) allow an accurate computation of lighting for each point in a scene, but this is a long process and any modification requires the whole scene to be rendered again to get the result. The first guess is empirical, provided by experience of the operator and rarely submitted to scientific considerations. Our aim is to provide a tool for helping designers to achieve this work in the scope of global illumination. We consider the problem when some data are asked for : on one hand the mean lighting in some zones (for example on a desktop) and on the other hand some qualitative information about location of sources (spotlights on the ceiling, halogens on north wall,...). The system we are conceiving computes the number of light sources, their position and intensities, in order to obtain the lighting effects defined by the user. The algorithms that we use bind together radiosity computations with resolution of a system of constraints.},
  subject      = {Architektur},
  language  = {en}
}
@inproceedings{ChristovPetrova1997,
  author    = {Christov, Christo T. and Petrova, Lyllia B.},
  title     = {Computer-Aided Static Analysis of Complex Prismatic Orthotropic Shell Structures by the Analytical Finite Strip Method},
  doi       = {10.25643/bauhaus-universitaet.435},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-4358},
  year      = {1997},
  abstract  = {The paper describes a development of the analytical finite strip method (FSM) in displacements for linear elastic static analysis of simply supported at their transverse ends complex orthotropic prismatic shell structures with arbitrary open or closed deformable contour of the cross-section under general external loads. A number of bridge top structures, some roof structures and others are related to the studied class. By longitudinal sections the prismatic thin-walled structure is discretized to a limited number of plane straight strips which are connected continuously at their longitudinal ends to linear joints. As basic unknowns are assumed the three displacements of points from the joint lines and the rotation to these lines. In longitudinal direction of the strips the unknown quantities and external loads are presented by single Fourier series. In transverse direction of each strips the unknown values are expressed by hyperbolic functions presenting an exact solution of the corresponding differential equations of the plane straight strip. The basic equations and relations for the membrane state, for the bending state and for the total state of the finite strip are obtained. The rigidity matrix of the strip in the local and global co-ordinate systems is derived. The basic relations of the structure are given and the general stages of the analytical FSM are traced. For long structures FSM is more efficient than the classic finite element method (FEM), since the problem dimension is reduced by one and the number of unknowns decreases. In comparison with the semi-analytical FSM, the analytical FSM leads to a practically precise solution, especially for wider strips, and provides compatibility of the displacements and internal forces along the longitudinal linear joints.},
  subject      = {Tragwerk},
  language  = {en}
}
@inproceedings{BauriedelDonathKoenig,
  author    = {Bauriedel, Christian and Donath, Dirk and K{\"o}nig, Reinhard},
  title     = {COMPUTER-SUPPORTED SIMULATIONS FOR URBAN PLANNING},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2923},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29235},
  pages     = {10},
  abstract  = {The idea about a simulation program to support urban planning is explained: Four different, clearly defined developing paths can be calculated for the rebuilding of a shrinking town. Aided by self-organization principles, a complex system can be created. The dynamics based on the action patterns of single actors, whose behaviour is cyclically depends on the generated structure. Global influences, which control the development, can be divided at a spatial, socioeconomic, and organizational-juridical level. The simulation model should offer conclusions on new planning strategies, especially in the context of the creation process of rebuilding measures. An example of a transportation system is shown by means of prototypes for the visualisation of the dynamic development process.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BraunesDonath,
  author    = {Braunes, J{\"o}rg and Donath, Dirk},
  title     = {COMPUTERGEST{\"U}TZTE PLANUNG IM BESTAND VON DER DIGITALEN BESTANDSERFASSUNG ZUR PLANUNGSUNTERST{\"U}TZUNG IM CAAD},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2933},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29338},
  pages     = {10},
  abstract  = {F{\"u}r eine gesicherte Planung im Bestand, sind eine F{\"u}lle verschiedenster Informationen zu ber{\"u}cksichtigen, welche oft erst w{\"a}hrend des Planungs- oder Bauprozesses gewonnen werden. Voraussetzung hierf{\"u}r bildet immer eine Bestandserfassung. Zwar existieren Computerprogramme zur Unterst{\"u}tzung der Bestandserfassung, allerdings handelt es sich hierbei ausschließlich um Insell{\"o}sungen. Der Export der aufgenommenen Daten in ein Planungssystem bedingt Informationsverluste. Trotz der potentiellen M{\"o}glichkeit aktueller CAAD/BIM Systeme zur Verwaltung von Bestandsdaten, sind diese vorrangig f{\"u}r die Neubauplanung konzipiert. Die durchg{\"a}ngige Bearbeitung von Sanierungsprojekten von der Erfassung des Bestandes {\"u}ber die Entwurfs- und Genehmigungsplanung bis zur Ausf{\"u}hrungsplanung innerhalb eines CAAD/BIM Systems wird derzeit nicht ad{\"a}quat unterst{\"u}tzt. An der Professur Informatik in der Architektur (InfAR) der Fakult{\"a}t Architektur der Bauhaus-Universit{\"a}t Weimar entstanden im Rahmen des DFG Sonderforschungsbereich 524 "Werkzeuge und Konstruktionen f{\"u}r die Revitalisierung von Bauwerken" in den letzten Jahren Konzepte und Prototypen zur fachlich orientierten Unterst{\"u}tzung der Planung im Bestand. Der Fokus lag dabei in der Erfassung aller planungsrelevanter Bestandsdaten und der Abbildung dieser in einem dynamischen Bauwerksmodell. Aufbauend auf diesen Forschungsarbeiten befasst sich der Artikel mit der kontextbezogenen Weiterverwendung und gezielten Bereitstellung von Bestandsdaten im Prozess des Planens im Bestand und der Integration von Konzepten der planungsrelevanten Bestandserfassung in markt{\"u}bliche CAAD/BIM Systeme.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{SchoenbergerHermann,
  author    = {Sch{\"o}nberger, Karsten and Hermann, F.},
  title     = {COMPUTERGEST{\"U}TZTES PORTFOLIOMANAGEMENT - EIN PRAXISBEISPIEL},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3016},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30168},
  pages     = {10},
  abstract  = {Die Kommunale Wohnungsgesellschaft mbH Erfurt(KoWo) ist mit ihren rund 20.000 Wohnungen in der Landeshauptstadt das gr{\"o}ßte Wohnungsunternehmen in Th{\"u}ringen. Der Immobilienbestand ist heterogen in seinem technischen Zustand und im Bezug auf die unterschiedlichen Lagen der Objekte. Bedingt durch Leerst{\"a}nde und unterschiedliche Modernisierungsmaßnahmen und -st{\"a}nde unterscheidet sich die Wirtschaftlichkeit verschiedener Objekte deutlich. Ohne eine einheitliche Einwertung des Immobilienbestandes im Bezug auf die Objektattraktivit{\"a}t, die Standortqualit{\"a}t und die Objektwirtschaftlichkeit f{\"a}llt eine langfristige strategische Entwicklung des Immobilienportfolios schwer. {\"U}ber die Schritte der technischen Bestandserfassung, die Einwertung {\"u}ber ein Scorintmodell, die Abbildung in einem Portfoliomodell mit zugeh{\"o}riger Normstrategie bis hin zur Weiterverarbeitung der Daten in der 20-j{\"a}hrigen Instandsetzungsplanung wird praxisnah aufgezeigt, wie die Vorgehensweise bei der Einwertung des Immobilienportfolios ist.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{Schiller,
  author    = {Schiller, Christian},
  title     = {CONSTRAINED TRAFFIC DEMAND MODELS - SIMULTANEOUS DISTRIBUTION AND MODE CHOICE},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3014},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30148},
  pages     = {16},
  abstract  = {Unconstrained models are very often found in the broad spectrum of different theories of traffic demand models. In these models there are none or only one-sided restrictions influencing the choice of the individual. However in the traffic demand different deciding dependencies of the traffic volume with regard to the specific conditions of the territory structure potentials exist. Kichhoff and Lohse introduced bi- and tri-linearly constrained models to show these dependencies. In principle, the dependencies are described as hard, elastic and open boundary sum criteria. In this article a model is formulated which gets away from these predefined boundary sum criteria and allows a free determination of minimal and maximal boundary sum criteria. The iterative solution algorithm is shown according to a FURNESS procedure at the same time. With the approach of freely selectable minimal and maximal boundary sum criteria the modeling transport planner gets the possibility to show the traffic event even better. Furthermore all common boundary sum criteria can be calculated with this model. Therewith the often necessary and sensible standard and special cases can also be modeled.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BeranDlask,
  author    = {Beran, V{\´a}clav and Dlask, Petr},
  title     = {CONSTRUCTION SPEED AND CASH FLOW OPTIMISATION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2926},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29269},
  pages     = {10},
  abstract  = {Practical examples show that the improvement in cost flow and total amount of money spend in construction and further use may be cut significantly. The calculation is based on spreadsheets calculation, very easy to develop on most PC´s now a days. Construction works, are a field where the evaluation of Cash Flow can be and should be applied. Decisions about cash flow in construction are decisions with long-term impact and long-term memory. Mistakes from the distant past have a massive impact on situations in the present and into the far economic future of economic activities. Two approaches exist. The Just-in-Time (JIT) approach and life cycle costs (LCC) approach. The calculation example shows the dynamic results for the production speed in opposition to stable flow of production in duration of activities. More sophisticated rescheduling in optimal solution might bring in return extra profit. In the technologies and organizational processes for industrial buildings, railways and road reconstruction, public utilities and housing developments there are assembly procedures that are very appropriate for the given purpose, complicated research-, development-, innovation-projects are all very good aspects of these kinds of applications. The investors of large investments and all public invested money may be spent more efficiently if an optimisation speed-strategy can be calculated.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Kasparek,
  author    = {Kasparek, Eva},
  title     = {CONVERGENCE OF A NEW CONSISTENT FOLDED PLATE THEORY},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2972},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29724},
  pages     = {10},
  abstract  = {The design of challenging space structures frequently relies on the theory of folded plates. The models are composed of plane facets of which the bending and membrane stiffness are coupled along the folds. In conventional finite element analysis of faceted structures the continuity of the displacement field is enforced exclusively at the nodes. Since approximate solutions for transverse and for in-plane displacements are not members of the same function space, separation occurs in between the common nodes of adjacent elements. It is shown that the kinematic assumptions of Bernoulli are accounted for this incompatibility along the edges in facet models. A general answer to this problem involves substantial modification of plate and membrane theory, but a straight forward formulation can be derived for simply folded plates, structures, whose folds do not intersect. A broad class of faceted structures, including models of various curved shells, belong to this category and can be calculated consistently. The additional requirements to assure continuity concern the mapping of displacement derivatives on the edges. An appropriate finite facet element provides node and edge-oriented degrees of freedom, whose transformation to system degrees of freedom, depends on the geometric configuration at each node. The concept is implemented using conform triangular elements. To evaluate the new approach, the energy norm of representative structures for refined meshes is calculated. The focus is placed on the mathematical convergence towards reliable solutions obtained from finite volume models.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Koenig,
  author    = {K{\"o}nig, Reinhard},
  title     = {CPlan: An Open Source Library for Computational Analysis and Synthesis},
  series = {33rd eCAADe Conference},
  booktitle = {33rd eCAADe Conference},
  editor    = {Martens, Bob and Wurzer, G, Gabriel and Grasl, Tomas and Lorenz, Wolfgang and Schaffranek, Richard},
  publisher = {Vienna University of Technology},
  address   = {Vienna},
  doi       = {10.25643/bauhaus-universitaet.2503},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20160118-25037},
  pages     = {245 -- 250},
  abstract  = {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.},
  subject      = {Architektur},
  language  = {en}
}