@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}
}
@misc{Martin2006,
  type      = {Master Thesis},
  author    = {Martin, Karlheinz},
  title     = {Analyse der baubetrieblichen Logik und Grundlagen zur 3-D-Simulation eines U-Bahnhofs},
  doi       = {10.25643/bauhaus-universitaet.785},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7855},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2006},
  abstract  = {Am beispiel der sich im Bau befindlichen U-Bahnstation 'Vijzelgracht' in Amsterdam werden beispielhaft Ablaufkonzepte untersucht und und durch Analyse ihrer Logik gepr{\"u}ft. Der Schwerpunkt der Untersuchung liegt in der Entwicklung von m{\"o}glichen Konzepten der Kombination von Erdaushub mit der Montage von aussteifenden Elementen. Dazu werden die wesentlichen, relevanten Arbeitsschritte identifiziert und beschrieben. Auf der Basis von Aufwandswerten werden Maschinen und Ger{\"a}te dimensioniert. Die Mengenermittlung des Erdstoffvolumens ist hierbei ebenso Grundlage f{\"u}r die Erarbeitung von Ablaufkonzepten. Auf diesen Grundlagen werden mehrere Ablaufkonzepte dargestellt. Der Nachweis der logischen Wahrheit erfolgt am Beispiel einer Ablaufvariante. Hier werden die in logische Sprache {\"u}berf{\"u}hrten Arbeitsschritte dargestellt und auf Wahrheit hin gepr{\"u}ft.},
  subject      = {Bauablauf},
  language  = {de}
}
@misc{Wolny2006,
  type      = {Master Thesis},
  author    = {Wolny, Petra},
  title     = {Analyse der Trag- und Funktionsf{\"a}higkeit von Lagern und Pfeilern bei unterschiedlichen Sicherheitskonzepten},
  doi       = {10.25643/bauhaus-universitaet.751},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7516},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2006},
  abstract  = {Bemessung der Lager und Pfeiler einer f{\"u}nffeldrigen zweistegigen vorgespannten Plattenbalkenbr{\"u}cke in Massivbauweise; Analyse der Einwirkungen, der Kr{\"a}fte und Bewegungen in den Lagerungspunkten sowie der Lager und Pfeiler;},
  subject      = {Analyse},
  language  = {de}
}
@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}
}
@phdthesis{Noennig2006,
  author    = {N{\"o}nnig, J{\"o}rg Rainer},
  title     = {ARCHITEKTUR, SPRACHE, KOMPLEXIT{\"A}T : Acht Essays zur Architekturepistemologie},
  doi       = {10.25643/bauhaus-universitaet.931},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20071023-9946},
  school      = {Bauhaus-Universit{\"a}t Weimar},
  year      = {2006},
  abstract  = {Komplexit{\"a}t ist ein genuin architektonisches Problem. Der Begriff von Architektur als einer universellen Praxis bzw. ganzheitlichen Erkenntnisweise enth{\"a}lt bereits im Kern den Begriff 'Komplexit{\"a}t'. Beide Konzepte fallen weithin zusammen - Architektur kann damit als spezifische Denkform des Komplexen betrachtet werden. Das in der Arbeit aufgezeigte Dilemma besteht darin, dass der modernen Architektur ihr urspr{\"u}nglicher Gestaltungsgegenstand - Komplexit{\"a}t - abhanden gekommen ist: 'N{\"o}nnig dekonstruiert zu Recht die hoch aggregierten Begriffe des Raumes und des Entwurfs. Die gesamte Arbeit zeigt, dass die modernen Beschreibungsformen von Komplexit{\"a}t gerade nicht in der Architektur entwickelt sind.' (Prof. Gerd Zimmermann, Weimar). Um dieses Defizit zu beheben und Architektur als eigenst{\"a}ndige Wissenstechnik ('Technoepisteme') zu etablieren, wird ausgehend von spezifischen 'Praxis- und Diskursdefiziten' ein Theorieszenario entwickelt, mit dem und in dem Architektur sich als komplexe Wissensform verwirklicht (u.a. Komplexe Systeme, Design Sciences, Operationale Heuristik). 'Vorliegende Arbeit ist der Versuch […] die Architektur gewissermaßen wieder in den Stand zu setzen, der ihr im System des Denkens eigentlich zukommt […] Der Komplexit{\"a}tsdiskurs in der Architektur ist zur{\"u}ck.' (Prof. Gerd Zimmermann, Weimar)},
  subject      = {Erkenntnistheorie},
  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}
}