@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 }, language = {en} } @inproceedings{Eickelkamp, author = {Eickelkamp, Jens Peter}, title = {LIQUIDIT{\"A}TSPLANUNG VON BAUPROJEKTEN}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2948}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29483}, pages = {12}, abstract = {Die Liquidit{\"a}tsplanung von Bauunternehmen XE "Liquidit{\"a}tsplanung" gilt als ein wesentliches Steuerungs-, Kontroll- sowie Informationsinstrument f{\"u}r interne und externe Adressaten und {\"u}bt eine Entscheidungsunterst{\"u}tzungsfunktion aus. Da die einzelnen Bauprojekte einen wesentlichen Anteil an den Gesamtkosten des Unternehmens ausmachen, besitzen diese auch einen erheblichen Einfluß auf die Liquidit{\"a}t und die Zahlungsf{\"a}higkeit der Bauunternehmung. Dem folgend ist es in der Baupraxis eine {\"u}bliche Verfahrensweise, die Liquidit{\"a}tsplanung zuerst projektbezogen zu erstellen und anschließend auf Unternehmensebene zu verdichten. Ziel der Ausf{\"u}hrungen ist es, die Zusammenh{\"a}nge von Arbeitskalkulation XE "Arbeitskalkulation" , Ergebnisrechnung XE "Ergebnisrechnung" und Finanzrechnung XE "Finanzrechnung" in Form eines deterministischen XE "Erkl{\"a}rungsmodells" Planungsmodells auf Projektebene darzustellen. Hierbei soll das Verst{\"a}ndnis und die Bedeutung der Verkn{\"u}pfungen zwischen dem technisch-orientierten Bauablauf und dessen Darstellung im Rechnungs- und Finanzwesen herausgestellt werden. Die Vorg{\"a}nge aus der Bauabwicklung, das heißt die Abarbeitung der Bauleistungsverzeichnispositionen und deren zeitliche Darstellung in einem Bauzeitenplan sind periodisiert in Gr{\"o}ßen der Betriebsbuchhaltung (Leistung, Kosten) zu transformieren und anschließend in der Finanzrechnung (Einzahlungen., Auszahlungen) nach Kreditoren und Debitoren aufzuschl{\"u}sseln.}, subject = {Architektur }, language = {de} } @inproceedings{SchapkeSchererKatranuschkov, author = {Schapke, Sven-Eric and Scherer, Raimar J. and Katranuschkov, Peter}, title = {SEMANTIC SERVICE ENVIRONMENTS FOR INTEGRATING TEXT WITH MODEL-BASED INFORMATION IN AEC/FM}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3012}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30125}, pages = {10}, abstract = {In distributed project organisations and collaboration there is a need for integrating unstructured self-contained text information with structured project data. We consider this a process of text integration in which various text technologies can be used to externalise text content and consolidate it into structured information or flexibly interlink it with corresponding information bases. However, the effectiveness of text technologies and the potentials of text integration greatly vary with the type of documents, the project setup and the available background knowledge. The goal of our research is to establish text technologies within collaboration environments to allow for (a) flexibly combining appropriate text and data management technologies, (b) utilising available context information and (c) the sharing of text information in accordance to the most critical integration tasks. A particular focus is on Semantic Service Environments that leverage on Web service and Semantic Web technologies and adequately support the required systems integration and parallel processing of semi-structured and structured information. The paper presents an architecture for text integration that extends Semantic Service Environments with two types of integration services. Backbone to the Information Resource Sharing and Integration Service is a shared environment ontology that consolidates information on the project context and the available model, text and general linguistic resources. It also allows for the configuration of Semantic Text Analysis and Annotation Services to analyse the text documents as well as for capturing the discovered text information and sharing it through semantic notification and retrieval engines. A particular focus of the paper is the definition of the overall integration process configuring a complementary set of analyses and information sharing components.}, subject = {Architektur }, language = {en} } @inproceedings{TrummerDenzlerSuesse, author = {Trummer, Michael and Denzler, J. and S{\"u}ße, Herbert}, title = {PRECISE 3D MEASUREMENT WITH STANDARD MEANS AND MINIMIAL USER INTERACTION - EXTENDED SINGLE-VIEW RECONSTRUCTION}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3028}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30282}, pages = {8}, abstract = {The paper proposes a new method for general 3D measurement and 3D point reconstruction. Looking at its features, the method explicitly aims at practical applications. These features especially cover low technical expenses and minimal user interaction, a clear problem separation into steps that are solved by simple mathematical methods (direct, stable and optimal with respect to least error squares), and scalability. The method expects the internal and radial distortion parameters of the used camera(s) as inputs, and a plane quadrangle with known geometry within the scene. At first, for each single picture the 3D position of the reference quadrangle (with respect to each camera coordinate frame) is calculated. These 3D reconstructions of the reference quadrangle are then used to yield the relative external parameters of each camera regarding the first one. With known external parameters, triangulation is finally possible. The differences from other known procedures are outlined, paying attention to the stable mathematical methods (no usage of nonlinear optimization) and the low user interaction with good results at the same time.}, subject = {Architektur }, language = {en} } @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 }, language = {en} } @inproceedings{KimuraMakinoMaegaitoetal., author = {Kimura, Atsushi and Makino, Y. and Maegaito, Kentaro and Suzuki, Osamu}, title = {ITERATION DYNAMICAL SYSTEMS OF DISCRETE LAPLACIANS ON THE PLANE LATTICE (II) (THE VISUAL IMPRESSIONS GIVEN BY DESIGN-PATTERNS)}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2973}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29731}, pages = {4}, abstract = {The present study was designed to investigate the underlying factors determining the visual impressions of design-patterns that have complex textures. Design-patterns produced by "the dynamical system defined by iterations of discrete Laplacians on the plane lattice" were adopted as stimuli because they were not only complex, but also defined mathematically. In the experiment, 21 graduate and undergraduate students sorted 102 design-patterns into several groups by visual impressions. Those 102 patterns were classified into 12 categories by the cluster analysis. The results showed that the regularity of pattern was a most efficient factor for determining visual impressions of design-pattern, and there were some correspondence between visual impressions and mathematical variables of design-pattern. Especially, the visual impressions were influenced greatly by the neighborhood, and less influenced by steps of iterations.}, subject = {Architektur }, language = {en} } @inproceedings{Faustino, author = {Faustino, Nelson}, title = {FISCHER DECOMPOSITION FOR DIFFERENCE DIRAC OPERATORS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2955}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29551}, pages = {10}, abstract = {We establish the basis of a discrete function theory starting with a Fischer decomposition for difference Dirac operators. Discrete versions of homogeneous polynomials, Euler and Gamma operators are obtained. As a consequence we obtain a Fischer decomposition for the discrete Laplacian. For the sake of simplicity we consider in the first part only Dirac operators which contain only forward or backward finite differences. Of course, these Dirac operators do not factorize the classic discrete Laplacian. Therefore, we will consider a different definition of a difference Dirac operator in the quaternionic case which do factorizes the discrete Laplacian.}, subject = {Architektur }, language = {en} } @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 }, language = {en} } @inproceedings{Shapiro, author = {Shapiro, Michael}, title = {ON HYPERHOLOMORPHIC POLYNOMIALS FOR THE CAUCHY-RIEMANN AND THE DIRAC OPERATORS OF CLIFFORD ANALYSIS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3020}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30201}, pages = {1}, abstract = {Clifford Analysis, hyperholomorphic polynomials, Taylor Series.}, subject = {Architektur }, language = {en} } @inproceedings{ErikssonKettunen, author = {Eriksson, Sirkka-Liisa and Kettunen, Jarkko}, title = {HYPERMONOGENIC POLYNOMIALS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2950}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29509}, pages = {22}, abstract = {It is well know that the power function is not monogenic. There are basically two ways to include the power function into the set of solutions: The hypermonogenic functions or holomorphic Cliffordian functions. L. Pernas has found out the dimension of the space of homogenous holomorphic Cliffordian polynomials of degree m, but his approach did not include a basis. It is known that the hypermonogenic functions are included in the space of holomorphic Cliffordian functions. As our main result we show that we can construct a basis for the right module of homogeneous holomorphic Cliffordian polynomials of degree m using hypermonogenic polynomials and their derivatives. To that end we first recall the function spaces of monogenic, hypermonogenic and holomorphic Cliffordian functions and give the results needed in the proof of our main theorem. We list some basic polynomials and their properties for the various function spaces. In particular, we consider recursive formulas, rules of differentiation and properties of linear independency for the polynomials.}, subject = {Architektur }, language = {en} } @inproceedings{DzwigonHempel, author = {Dzwigon, Wieslaw and Hempel, Lorenz}, title = {ZUR SYNCHRONISATION VON LINIEN IM {\"O}PNV}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2944}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29442}, pages = {12}, abstract = {Wir betrachten im {\"O}PNV ({\"O}ffentlichen Personennahverkehr) diejenige Situation, daß zwei Bus- oder Straßenbahnlinien gemeinsame Haltestellen haben. Ziel unserer Untersuchungen ist es, f{\"u}r beide Linien einen solchen Fahrplan zu finden, der f{\"u}r die Fahrg{\"a}ste m{\"o}glichst viel Bequemlichkeit bietet. Die Bedarfsstruktur - die Anzahl von Personen, die die beiden Linien benutzen - setzt dabei gewisse Beschr{\"a}nkungen f{\"u}r die Taktzeiten der beiden Linien. Die verbleibenden Entscheidungsfreiheiten sollen im Sinne der Zielstellung ausgenutzt werden. Im Vortrag wird folgenden Fragen nachgegangen: - nach welchen Kriterien kann man die "Bequemlichkeit" oder die "Synchonisationsg{\"u}te" messen? - wie kann man die einzelnen "Synchronisationsmaße" berechnen ? - wie kann man die verbleibenden Entscheidungsfreiheiten nutzen, um eine m{\"o}glichst gute Synchronisation zu erreichen ? Die Ergebnisse werden dann auf einige Beispiele angewandt und mit den bereitgestellten Methoden L{\"o}sungsvorschl{\"a}ge unterbreitet.}, subject = {Architektur }, language = {de} } @inproceedings{RogożaStachonUbysz, author = {Rogoża, Agnieszka and Stachon, T. and Ubysz, Andrzej}, title = {MODELLING THE PLASTIC HINGE IN THE STATICALLY INDETERMINABLE REINFORCED CONCRETE BAR ELEMENTS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3005}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30050}, pages = {6}, abstract = {The paper presents the example numerical model to calculate the reinforced concrete bar structures. Usually applied methods of structure dimensioning do not include the case of plastic hinges occurrence under the limit load of construction. The model represented by A. Borcz is based on the differential equation of deflection line of the beam and it includes the effects of rearrangement of the internal forces and reological effects. The experimental parameters obtained in earlier investigations describe effects resulting from the rise of plastic hinges in the proposed equation.}, subject = {Architektur }, language = {en} } @inproceedings{EngelkeSchuster, author = {Engelke, Gerald and Schuster, Otmar}, title = {OPENING THE RESERVE OF ECONOMIC EFFICIENCY IN LOGISTICAL AND FACILITY MANAGEMENT SERVICES}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3017}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30177}, pages = {8}, abstract = {In many branches companies often lose the visibility of their human and technical resources of their field service. On the one hand the people in the fieldservice are often free like kings on the other hand they do not take part of the daily communication in the central office and suffer under the lacking involvement in the decisions inside the central office. The result is inefficiency. Reproaches in both directions follow. With the radio systems and then mobile phones the ditch began to dry up. But the solutions are far from being productive.}, subject = {Architektur }, language = {en} } @inproceedings{SchererGrinewitschus, author = {Scherer, Klaus and Grinewitschus, Viktor}, title = {INTEGRIERTE SYSTEMBEDIENUNG IN GEB{\"A}UDEN: KOMPLEXE TECHNIK EINFACHER HANDHABEN}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3013}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30132}, pages = {7}, abstract = {R{\"a}ume und Geb{\"a}ude sind heute wegen der enormen Funktionalit{\"a}t der technischen Geb{\"a}udeausr{\"u}stung (TGA) in Kombination mit der sonstigen Ausstattung und den diversen Anwendungsprozessen und Nutzergruppen ohne innovative Konzepte der integrierten Bedienung kaum noch beherrschbar bzw. optimal nutzbar. Dies gilt sowohl f{\"u}r Wohn- als auch f{\"u}r Zweckimmobilien. Die Geb{\"a}udeleittechnik (GLT) und die Geb{\"a}udeautomation (GA) k{\"o}nnen hier unter sinnvoller Integration der M{\"o}glichkeiten der Mikroelektronik, Multimedia-, Kommunikations- und Informationstechnik erheblich zu nutzbringenden Innovationen beitragen. Die Automobilindustrie hat in den letzten Jahren gezeigt, wie durch einen integralen Systemansatz und durch Einsatz von Elektronik, Kommunikations- und Informationstechnik eine sinnvolle technische Assistenz der Anwender machbar ist. Genannt sei hier das Konzept des Cockpits mit integrierter Funktionsb{\"u}ndelung und der Informationskonzentration am Armaturenbrett. Im Gegensatz zum Automobil ist der Bereich der technischen Geb{\"a}udeausstattung in Wohn- und Nutzimmobilien gekennzeichnet durch eine starke Fragmentierung in unterschiedlichste Gewerke unter Beteiligung vieler oft schlecht koordinierter Akteure. Durch das Duisburger inHaus-Innovationszentrum f{\"u}r Intelligente Raum- und Geb{\"a}udesysteme der Fraunhofer-Gesellschaft wurden in den letzten Jahren neuartige Konzepte der Systemintegration heterogener Technik auf der Basis von Middleware-Plattformen und Multimedia-Technologien und -Ger{\"a}ten entwickelt, getestet und in die Anwendung getragen. Einer der ersten Systemanwendungen dieses offenen Infrastrukturkonzepts ist die integrierte Systembedienung mit zum Teil v{\"o}llig neuen Bedienkonzepten und einer starken Bedienungsvereinfachung auch komplexester Technikausr{\"u}stungen in Immobilien. Der Beitrag beschreibt nach einer Analyse der Ausgangslage die technologischen Grundz{\"u}ge der integrierten Systembedienung. Es folgen einige Anwendungsbeispiele und eine zusammenfassende Bewertung mit einem Ausblick auf weiterf{\"u}hrende Aktivit{\"a}ten.}, subject = {Architektur }, 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 }, language = {en} } @inproceedings{Siekierski, author = {Siekierski, Wojciech}, title = {VARIATION OF ROTATIONAL RESTRAINT IN GRID DECK CONNECTION DUE TO CORROSION DAMAGE AND STRENGTHENING}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3021}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30217}, pages = {8}, abstract = {The approach to assessment of rotational restraint of stringer-to-crossbeam connection in a deck of 100-year old steel truss bridge is presented. Sensitivity of rotational restraint coefficient of the connection to corrosion damage and strengthening is analyzed. Two criteria of the assessment of the rotational restraint coefficient are applied: static and kinematic one. The former is based on bending moment distribution in the considered member, the latter one - on the member rotation at the given joint. 2D-element model of finite element method is described: webs and flanges are modeled with shell elements, while rivets in the connection - with system of beam and spring elements. The method of rivet modeling is verified by T-stub connection test results published in literature. FEM analyses proved that recorded extent of corrosion damage does not alter the initial rotational restraint of stringer-to-crossbeam connection. Strengthening of stringer midspan influences midspan bending moment and stringer end rotation in a different way. Usually restoring member load bearing capacity means strengthening its critical regions (where the highest stress levels occur). This alters flexural stiffness distribution over member length and influences rotational restraint at its connection to other members. The impact depends on criterion chosen for rotational restraint coefficient assessment.}, subject = {Architektur }, language = {en} } @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 }, language = {de} } @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 }, language = {de} } @inproceedings{ErlemannHartmann, author = {Erlemann, Kai and Hartmann, Dietrich}, title = {PARALLELIZATION OF A MICROSCOPIC TRAFFIC SIMULATION SYSTEM USING MPIJAVA}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2951}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29516}, pages = {8}, abstract = {Traffic simulation is a valuable tool for the design and evaluation of road networks. Over the years, the level of detail to which urban and freeway traffic can be simulated has increased steadily, shifting from a merely qualitative macroscopic perspective to a very detailed microscopic view, where the behavior of individual vehicles is emulated realistically. With the improvement of behavioral models, however, the computational complexity has also steadily increased, as more and more aspects of real-life traffic have to be considered by the simulation environment. Despite the constant increase in computing power of modern personal computers, microscopic simulation stays computationally expensive, limiting the maximum network size than can be simulated on a single-processor computer in reasonable time. Parallelization can distribute the computing load from a single computer system to a cluster of several computing nodes. To this end, the exisiting simulation framework had to be adapted to allow for a distributed approach. As the simulation is ultimately targeted to be executed in real-time, incorporating real traffic data, only a spatial partition of the simulation was considered, meaning the road network has to be partitioned into subnets of comparable complexity, to ensure a homogenous load balancing. The partition process must also ensure, that the division between subnets does only occur in regions, where no strong interaction between the separated road segments occurs (i.e. not in the direct vicinity of junctions). In this paper, we describe a new microscopic reasoning voting strategy, and discuss in how far the increasing computational costs of these more complex behaviors lend themselves to a parallelized approach. We show the parallel architecture employed, the communication between computing units using MPIJava, and the benefits and pitfalls of adapting a single computer application to be used on a multi-node computing cluster.}, subject = {Architektur }, language = {en} } @inproceedings{Muschalla, author = {Muschalla, Dirk}, title = {OPTIMIZATION OF WATER RESOURCES SYSTEMS USING MULTI-OBJECTIVE EVOLUTION STRATEGIES}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2995}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29953}, pages = {10}, abstract = {This paper deals with the development of a new multi-objective evolution strategy in combination with an integrated pollution-load and water-quality model. The optimization algorithm combines the advantages of the Non-Dominated Sorting Genetic Algorithm and Self-Adaptive Evolution Strategies. The identification of a good spread of solutions on the pareto-optimum front and the optimization of a large number of decision variables equally demands numerous simulation runs. In addition, statements with regard to the frequency of critical concentrations and peak discharges require continuous long-term simulations. Therefore, a fast operating integrated simulation model is needed providing the required precision of the results. For this purpose, a hydrological deterministic pollution-load model has been coupled with a river water-quality and a rainfall-runoff model. Wastewater treatment plants are simulated in a simplified way. The functionality of the optimization and simulation tool has been validated by analyzing a real catchment area including sewer system, WWTP, water body and natural river basin. For the optimization/rehabilitation of the urban drainage system, both innovative and approved measures have been examined and used as decision variables. As objective functions, investment costs and river water quality criteria have been used.}, subject = {Architektur }, language = {en} } @inproceedings{EblingScheuermann, author = {Ebling, Julia and Scheuermann, G.}, title = {TEMPLATE MATCHING ON VECTOR FIELDS USING CLIFFORD ALGEBRA}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2946}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29464}, pages = {25}, abstract = {Due to the amount of flow simulation and measurement data, automatic detection, classification and visualization of features is necessary for an inspection. Therefore, many automated feature detection methods have been developed in recent years. However, only one feature class is visualized afterwards in most cases, and many algorithms have problems in the presence of noise or superposition effects. In contrast, image processing and computer vision have robust methods for feature extraction and computation of derivatives of scalar fields. Furthermore, interpolation and other filter can be analyzed in detail. An application of these methods to vector fields would provide a solid theoretical basis for feature extraction. The authors suggest Clifford algebra as a mathematical framework for this task. Clifford algebra provides a unified notation for scalars and vectors as well as a multiplication of all basis elements. The Clifford product of two vectors provides the complete geometric information of the relative positions of these vectors. Integration of this product results in Clifford correlation and convolution which can be used for template matching of vector fields. For frequency analysis of vector fields and the behavior of vector-valued filters, a Clifford Fourier transform has been derived for 2D and 3D. Convolution and other theorems have been proved, and fast algorithms for the computation of the Clifford Fourier transform exist. Therefore the computation of Clifford convolution can be accelerated by computing it in Clifford Fourier domain. Clifford convolution and Fourier transform can be used for a thorough analysis and subsequent visualization of flow fields.}, subject = {Architektur }, language = {en} } @inproceedings{EbertLenzen, author = {Ebert, Carsten and Lenzen, Armin}, title = {OUTPUT-ONLY ANALYSIS FOR EXPERIMENTAL DAMAGE DETECTION OF A TIED-ARCH BRIDGE}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2945}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29452}, pages = {13}, abstract = {In civil engineering it is very difficult and often expensive to excite constructions such as bridges and buildings with an impulse hammer or shaker. This problem can be avoided with the output-only method as special feature of stochastic system identification. The permanently existing ambient noise (e.g. wind, traffic, waves) is sufficient to excite the structures in their operational conditions. The output-only method is able to estimate the observable part of a state-space-model which contains the dynamic characteristics of the measured mechanical system. Because of the assumption that the ambient excitation is white there is no requirement to measure the input. Another advantage of the output-only method is the possibility to get high detailed models by a special method, called polyreference setup. To pretend the availability of a much larger set of sensors the data from varying sensor locations will be collected. Several successive data sets are recorded with sensors at different locations (moving sensors) and fixed locations (reference sensors). The covariance functions of the reference sensors are bases to normalize the moving sensors. The result of the following subspace-based system identification is a high detailed black-box-model that contains the weighting function including the well-known dynamic parameters eigenfrequencies and mode shapes of the mechanical system. Emphasis of this lecture is the presentation of an extensive damage detection experiment. A 53-year old prestressed concrete tied-arch-bridge in H{\"u}nxe (Germany) was deconstructed in 2005. Preliminary numerous vibration measurements were accomplished. The first experiment for system modification was an additional support near the bridge bearing of one main girder. During a further experiment one hanger from one tied arch was cut through as an induced damage. Some first outcomes of the described experiments will be presented.}, subject = {Architektur }, language = {en} } @inproceedings{SampaioHenriquesStuderetal., author = {Sampaio, Alcinia Zita and Henriques, Pedro and Studer, P. and Luizi, Rui}, title = {VIRTUAL REALITY TECHNOLOGY TO REPRESENT CONSTRUCTION ACTIVITIES}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30090}, pages = {9}, abstract = {The use of virtual reality techniques in the development of educational applications brings new perspectives to the teaching of subjects related to the field of civil construction in Civil Engineering domain. In order to obtain models, which would be able to visually simulate the construction process of two types of construction work, the research turned to the techniques of geometric modelling and virtual reality. The applications developed for this purpose are concerned with the construction of a cavity wall and a bridge. These models make it possible to view the physical evolution of the work, to follow the planned construction sequence and to visualize details of the form of every component of the works. They also support the study of the type and method of operation of the equipment necessary for these construction procedures. These models have been used to distinct advantage as educational aids in first-degree courses in Civil Engineering. Normally, three-dimensional geometric models, which are used to present architectural and engineering works, show only their final form, not allowing the observation of their physical evolution. The visual simulation of the construction process needs to be able to produce changes to the geometry of the project dynamically. In the present study, two engineering construction work models were created, from which it was possible to obtain three-dimensional models corresponding to different states of their form, simulating distinct stages in their construction. Virtual reality technology was applied to the 3D models. Virtual reality capacities allow the interactive real-time viewing of 3D building models and facilitate the process of visualizing, evaluating and communicating.}, subject = {Architektur }, 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 }, 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 }, language = {en} } @inproceedings{BrackxDeSchepperDeSchepperetal., author = {Brackx, Fred and De Schepper, Hennie and De Schepper, Nele and Sommen, Frank}, title = {HERMITIAN CLIFFORD-HERMITE WAVELETS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2931}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29313}, pages = {13}, abstract = {The one-dimensional continuous wavelet transform is a successful tool for signal and image analysis, with applications in physics and engineering. Clifford analysis offers an appropriate framework for taking wavelets to higher dimension. In the usual orthogonal case Clifford analysis focusses on monogenic functions, i.e. null solutions of the rotation invariant vector valued Dirac operator ∂, defined in terms of an orthogonal basis for the quadratic space Rm underlying the construction of the Clifford algebra R0,m. An intrinsic feature of this function theory is that it encompasses all dimensions at once, as opposed to a tensorial approach with products of one-dimensional phenomena. This has allowed for a very specific construction of higher dimensional wavelets and the development of the corresponding theory, based on generalizations of classical orthogonal polynomials on the real line, such as the radial Clifford-Hermite polynomials introduced by Sommen. In this paper, we pass to the Hermitian Clifford setting, i.e. we let the same set of generators produce the complex Clifford algebra C2n (with even dimension), which we equip with a Hermitian conjugation and a Hermitian inner product. Hermitian Clifford analysis then focusses on the null solutions of two mutually conjugate Hermitian Dirac operators which are invariant under the action of the unitary group. In this setting we construct new Clifford-Hermite polynomials, starting in a natural way from a Rodrigues formula which now involves both Dirac operators mentioned. Due to the specific features of the Hermitian setting, four different types of polynomials are obtained, two types of even degree and two types of odd degree. These polynomials are used to introduce a new continuous wavelet transform, after thorough investigation of all necessary properties of the involved polynomials, the mother wavelet and the associated family of wavelet kernels.}, subject = {Architektur }, language = {en} } @inproceedings{WittwerBecker, author = {Wittwer, Christof and Becker, Rainer}, title = {MODELLBASIERTE ERTRAGSKONTROLLE F{\"U}R PV ANLAGEN IN VERNETZTEN GEB{\"A}UDEN}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3036}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30363}, pages = {5}, abstract = {Subject of the paper is the realisation of a model based efficiency control system for PV generators using a simulation model. A standard 2-diodes model of PV generator is base of the ColSim model, which is implemented in ANSI C code for flexible code exporting. The algorithm is based on discretisized U-I characteristics, which allows the calculation of string topologies witch parallel and serial PV cells and modules. Shadowing effects can be modelled down to cell configuration using polar horizon definitions. The simulation model was ported to a real time environment, to calculate the efficiency of a PV system. Embedded System technology allows the networked operation and the integration of standard I/O devices. Futher work focus on the adaption of shadowing routine, which will be adapted to get the environment conditions from the real operation.}, subject = {Architektur }, language = {de} } @inproceedings{Geyer, author = {Geyer, Philipp}, title = {MODELS FOR MULTIDISCIPLINARY DESIGN OPTIMIZATION: AN EXEMPLARY OFFICE BUILDING}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2957}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29574}, pages = {10}, abstract = {The mathematical and technical foundations of optimization have been developed to a large extent. In the design of buildings, however, optimization is rarely applied because of insufficient adaptation of this method to the needs of building design. The use of design optimization requires the consideration of all relevant objectives in an interactive and multidisciplinary process. Disciplines such as structural, light, and thermal engineering, architecture, and economics impose various objectives on the design. A good solution calls for a compromise between these often contradictory objectives. This presentation outlines a method for the application of Multidisciplinary Design Optimization (MDO) as a tool for the designing of buildings. An optimization model is established considering the fact that in building design the non-numerical aspects are of major importance than in other engineering disciplines. A component-based decomposition enables the designer to manage the non-numerical aspects in an interactive design optimization process. A fa{\c{c}}ade example demonstrates a way how the different disciplines interact and how the components integrate the disciplines in one optimization model. In this grid-based fa{\c{c}}ade example, the materials switch between a discrete number of materials and construction types. For light and thermal engineering, architecture, and economics, analysis functions calculate the performance; utility functions serve as an important means for the evaluation since not every increase or decrease of a physical value improves the design. For experimental purposes, a genetic algorithm applied to the exemplary model demonstrates the use of optimization in this design case. A component-based representation first serves to manage non-numerical characteristics such as aesthetics. Furthermore, it complies with usual fabrication methods in building design and with object-oriented data handling in CAD. Therefore, components provide an important basis for an interactive MDO process in building design.}, subject = {Architektur }, language = {en} } @inproceedings{ChangChang, author = {Chang, Wei-Tsang and Chang, Teng-Wen}, title = {TIME-BASED FORM TRANSFORMATION WITH FOLDING SPACE}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2937}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29371}, pages = {10}, abstract = {Design activity could be treated as state transition computationally. In stepwise processing, in-between form-states are not easily observed. However, in this research time-based concept is introduced and applied in order to bridge the gap. In architecture, folding is one method of form manipulation and architects also want to search for alternatives by this operation. Besides, folding operation has to be defined and parameterized before time factor is involved as a variable of folding. As a result, time-based transformation provides sequential form states and redirects design activity.}, subject = {Architektur }, language = {en} } @inproceedings{Kisil, author = {Kisil, Vladimir}, title = {FILLMORE-SPRINGER-CNOPS CONSTRUCTION IMPLEMENTED IN GINAC}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2974}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29744}, pages = {103}, abstract = {This is an implementation of the Fillmore-Springer-Cnops construction (FSCc) based on the Clifford algebra capacities of the GiNaC computer algebra system. FSCc linearises the linear-fraction action of the Mobius group. This turns to be very useful in several theoretical and applied fields including engineering. The core of this realisation of FSCc is done for an arbitrary dimension, while a subclass for two dimensional cycles add some 2D-specific routines including a visualisation to PostScript files through the MetaPost or Asymptote software. This library is a backbone of many result published in, which serve as illustrations of its usage. It can be ported (with various level of required changes) to other CAS with Clifford algebras capabilities.}, subject = {Architektur }, 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 }, language = {en} } @inproceedings{LehnerHartmann, author = {Lehner, Karlheinz and Hartmann, Dietrich}, title = {USING INTERVAL ANALYSIS FOR STRUCTURAL ENGINEERING PROBLEMS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2984}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29844}, pages = {10}, abstract = {Interval analysis extends the concept of computing with real numbers to computing with real intervals. As a consequence, some interesting properties appear, such as the delivery of guaranteed results or confirmed global values. The former property is given in the sense that unknown numerical values are in known to lie in a computed interval. The latter property states that the global minimum value, for example, of a given function is also known to be contained in a interval (or a finite set of intervals). Depending upon the amount computation effort invested in the calculation, we can often find tight bounds on these enclosing intervals. The downside of interval analysis, however, is the mathematically correct, but often very pessimistic size of the interval result. This is in particularly due to the so-called dependency effect, where a single variable is used multiple times in one calculation. Applying interval analysis to structural analysis problems, the dependency has a great influence on the quality of numerical results. In this paper, a brief background of interval analysis is presented and shown how it can be applied to the solution of structural analysis problems. A discussion of possible improvements as well as an outlook to parallel computing is also given.}, subject = {Architektur }, language = {en} } @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 }, 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 }, language = {en} } @inproceedings{Kravchenko, author = {Kravchenko, Vladislav}, title = {NEW APPLICATIONS OF PSEUDOANALYTIC FUNCTION THEORY}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2983}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29835}, pages = {3}, abstract = {We show a close relation between the Schr{\"o}dinger equation and the conductivity equation to a Vekua equation of a special form. Under quite general conditions we propose an algorithm for explicit construction of pseudoanalytic positive formal powers for the Vekua equation that as a consequence gives us a complete system of solutions for the Schr{\"o}dinger and the conductivity equations. Besides the construction of complete systems of exact solutions for the above mentioned second order equations and the Dirac equation, we discuss some other applications of pseudoanalytic function theory.}, subject = {Architektur }, language = {en} } @inproceedings{EygelaarvanRooyen, author = {Eygelaar, Anton and van Rooyen, G.C.}, title = {ENGINEERING PROCESS MODEL SPECIFICATION AND RESOURCE LEVELING}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2952}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29529}, pages = {18}, abstract = {The use of process models in the analysis, optimization and simulation of processes has proven to be extremely beneficial in the instances where they could be applied appropriately. However, the Architecture/Engineering/Construction (AEC) industries present unique challenges that complicate the modeling of their processes. A simple Engineering process model, based on the specification of Tasks, Datasets, Persons and Tools, and certain relations between them, have been developed, and its advantages over conventional techniques have been illustrated. Graph theory is used as the mathematical foundation mapping Tasks, Datasets, Persons and Tools to vertices and the relations between them to edges forming a directed graph. The acceptance of process modeling in AEC industries not only depends on the results it can provide, but the ease at which these results can be attained. Specifying a complex AEC process model is a dynamic exercise that is characterized by many modifications over the process model's lifespan. This article looks at reducing specification complexity, reducing the probability for erroneous input and allowing consistent model modification. Furthermore, the problem of resource leveling is discussed. Engineering projects are often executed with limited resources and determining the impact of such restrictions on the sequence of Tasks is important. Resource Leveling concerns itself with these restrictions caused by limited resources. This article looks at using Task shifting strategies to find a near-optimal sequence of Tasks that guarantees consistent Dataset evolution while resolving resource restrictions.}, subject = {Architektur }, language = {en} } @inproceedings{Klauer, author = {Klauer, Thomas}, title = {MOBILE FACILITY MANAGEMENT ZUR INSPEKTION UND INSTANDHALTUNG VON INGENIEURBAUWERKEN}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2975}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29759}, pages = {10}, abstract = {In diesem Beitrag wird eine mobile Software-Komponente zur Vor-Ort-Unterst{\"u}tzung von Bauwerkspr{\"u}fungen gem{\"a}ß DIN 1076 „Ingenieurbauwerke im Zuge von Strassen und Wegen, {\"U}berwachung und Pr{\"u}fung" vorgestellt, welche sich im praktischen Einsatz bei der Hochbahn AG Hamburg befindet. Mit Hilfe dieses Werkzeugs kann die Aktivit{\"a}t am Bauwerk in den gesamten softwaregest{\"u}tzten Gesch{\"a}ftsprozess der auwerksinstandhaltung integriert und somit die Bearbeitungszeit einer Bauwerkspr{\"u}fung von der Vorbereitung bis zur Pr{\"u}fbericht-Erstellung reduziert werden. Die Technologie des Mobile Computing wird unter Ber{\"u}cksichtigung spezieller fachlicher Randbedingungen, wie z.B. dem Einsatzort unter freiem Himmel, erl{\"a}utert und es werden Methoden zur effizienten Datenerfassung mit Stift und Sprache vorgestellt und bewertet. Ferner wird die Einschr{\"a}nkung der Hardware durch die geringere Gr{\"o}ße der Endger{\"a}te, die sich durch die Bedingung der Mobilit{\"a}t ergibt, untersucht.}, subject = {Architektur }, language = {de} } @inproceedings{BultheelJansenMaesetal., author = {Bultheel, Adhemar and Jansen, M. and Maes, J. and Van Aerschot, W. and Vanraes, E.}, title = {SUBDIVIDE AND CONQUER RESOLUTION}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2909}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29091}, pages = {47}, abstract = {This contribution will be freewheeling in the domain of signal, image and surface processing and touch briefly upon some topics that have been close to the heart of people in our research group. A lot of the research of the last 20 years in this domain that has been carried out world wide is dealing with multiresolution. Multiresolution allows to represent a function (in the broadest sense) at different levels of detail. This was not only applied in signals and images but also when solving all kinds of complex numerical problems. Since wavelets came into play in the 1980's, this idea was applied and generalized by many researchers. Therefore we use this as the central idea throughout this text. Wavelets, subdivision and hierarchical bases are the appropriate tools to obtain these multiresolution effects. We shall introduce some of the concepts in a rather informal way and show that the same concepts will work in one, two and three dimensions. The applications in the three cases are however quite different, and thus one wants to achieve very different goals when dealing with signals, images or surfaces. Because completeness in our treatment is impossible, we have chosen to describe two case studies after introducing some concepts in signal processing. These case studies are still the subject of current research. The first one attempts to solve a problem in image processing: how to approximate an edge in an image efficiently by subdivision. The method is based on normal offsets. The second case is the use of Powell-Sabin splines to give a smooth multiresolution representation of a surface. In this context we also illustrate the general method of construction of a spline wavelet basis using a lifting scheme.}, subject = {Architektur }, language = {en} } @inproceedings{KlawitterOstrowski, author = {Klawitter, Arne and Ostrowski, M.}, title = {INTEGRATED RAINFALL RUNOFF MODELLING IN SMALL URBANIZED CATCHMENTS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2976}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29767}, pages = {12}, abstract = {A concept for integrated modeling of urban and rural hydrology is introduced. The concept allows for simulations on the catchment scale as well as on the local scale. It is based on a 2-layer-approach which facilitates the parallel coupling of a catchment hydrology model with an urban hydrology model, considering the interactions between the two systems. The concept has been implemented in a computer model combining a grid based distributed hydrological catchment model and a hydrological urban stormwater model based on elementary units. The combined model provides a flexible solution for time and spatial scale integration and offers to calculate separate water balances for urban and rural hydrology. Furthermore, it is GIS-based which allows for easy and accurate geo-referencing of urban overflow structures, which are considered as points of interactions between the two hydrologic systems. Due to the two-layer-approach, programs of measures can be incorporated in each system separately. The capabilities of the combined model have been tested on a hypothetical test case and a real world application. It could be shown that the model is capable of accurately quantifying the effects of urbanization in a catchment. The affects of urbanization can be analyzed at the catchment outlet, but can also be traced back to its origins, due to the geo-referencing of urban overflow structures. This is a mayor advantage over conventional hydrological catchment models for the analysis of land use changes.}, subject = {Architektur }, 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 }, 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 }, language = {en} } @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 }, language = {de} } @inproceedings{MelnikovSemenov, author = {Melnikov, B. E. and Semenov, Artem}, title = {MULTILEVEL COMPUTATION IN CIVIL ENGINEERING BASED ON MULTIMODEL ELASTO-PLASTIC ANALYSIS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2991}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29911}, pages = {11}, abstract = {Requires for reliability and durability of structures and their elements with simultaneous material economy have stimulated improvement of constitutive equations for description of elasto-plastic deformation processes. This has led to the development of phenomenological modelling of complex phenomena of irreversible deformation including history-dependent and rate-dependent effects. During the last several decades many works have been devoted to the development of elasto-plastic models, in order to better predict the material behavior under combined variable thermo-mechanical loading. The increase of accuracy of stress analysis and safety factors for complex structures with the help of modern finite-element packages (ABAQUS, ANSYS, COSMOS, LS-DYNA, MSC.MARC, MSC.NASTRAN, PERMAS and other) can be provided only by use of complex and special variants of plasticity theories, which are adequate for the considered loading conditions and based on authentic information about properties of materials. The areas of application of the various theories (models) are as a rule unknown to the users of finite-element packages at the existing variety loading condition sin machine-building designs. At the moment a universal theory of inelasticity is absent and even the most accomplished theories can not guarantee adequate description of deformation processes for arbitrary structure under wide range of loading programs. The classifier of materials, loading conditions, effects (phenomena) and list of basic experiments are developed by the authors. Use of these classifiers for an establishment of hierarchy of models is a first step for introduction of the multimodel analysis into computational practice. The set of the classic and modern inelasticity theories is considered, so that they are applicable for stress analysis of structures under complex loading programs. Among them there are plastic flow theories with linear and nonlinear isotropic and kinematic hardening, multisurface theories, endochronic theory, holonomic theory, rheologic models, theory of elasto-plastic processes, slip theory, physical theories (single crystal and polycrystalline models) and others. The classification of materials provides rearranging by a degree of homogeneous, chemical composition, level of strength and plasticity, behavior under cyclic loading, anisotropy of properties at initial condition, anisotropy of properties during deformation process, structural stability. The classification of loading conditions takes into consideration proportional and non-proportional loading, temperature range, combination of cyclic and monotonous loading, one-axial, two-axial and complex stress state, curvature of strain path, presence of stress concentrators and level of strain gradient. A unified general form of constitutive equations is presented for all used material models based upon the concept of internal state variables. The wide range of mentioned above inelastic material models has been implemented into finite element program PANTOCRATOR developed by authors (see for details www.pantocrator.narod.ru). Application possibility of different material models is considered both for material element and for complex structures subjected to complex non-proportional loading.}, subject = {Architektur }, language = {en} } @inproceedings{GalffyBaitschWellmannJelicetal., author = {Galffy, Mozes and Baitsch, Matthias and Wellmann Jelic, Andres and Hartmann, Dietrich}, title = {LIFETIME-ORIENTED OPTIMIZATION OF BRIDGE TIE RODS EXPOSED TO VORTEX-INDUCED ACROSS-WIND VIBRATIONS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2956}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29561}, pages = {12}, abstract = {In recent years, damages in welded connections plates of vertical tie rods of several arched steel bridges have been reported. These damages are due to fatigue caused by wind-induced vibrations. In the present study, such phenomena are examined, and the corresponding lifetime of a reference bridge in M{\"u}nster-Hiltrup, Germany, is estimated, based on the actual shape of the connection plate. Also, the results obtained are compared to the expected lifetime of a connection plate, whose geometry has been optimized separately. The structural optimization, focussing on the shape of the cut at the hanger ends, has been carried out using evolution strategies. The oscillation amplitudes have been computed by means of the Newmark-Wilson time-step method, using an appropriate load model, which has been validated by on-site experiments on the selected reference bridge. Corresponding stress-amplitudes are evaluated by multiplying the oscillation amplitudes with a stress concentration factor. This factor has been computed on the basis of a finite element model of the system "hanger-welding-connection plate", applying solid elements, according to the notch stress approach. The damage estimation takes into account the stochastics of the exciting wind process, as well as the stochastics of the material parameters (fatigue strength) given in terms of Woehler-curves. The shape optimization results in a substantial increase of the estimated hanger lifetime. The comparison of the lifetimes of the bulk plate and of the welding revealed that, in the optimized structure, the welding, being the most sensitive part in the original structure, shows much more resistance against potential damages than the bulk material.}, subject = {Architektur }, language = {en} } @inproceedings{MusialUbyszUlatowski, author = {Musial, Michal and Ubysz, Andrzej and Ulatowski, Piotr}, title = {METHOD OF CALCULATION OF INTERNAL FORCES REDISTRIBUTION AND DISLOCATIONS IN REINFORCED CONCRETE BEAMS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.2996}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29965}, pages = {8}, abstract = {The paper is a proposal of calculation of internal forces and dislocations in the reinforced concrete beams before and after cracking. For the ideally elastic bars transfer matrix proposed by Rakowski was applied. The effects associated with cracking were introduced by means of the Borcz's theory in the spectrally way. Numerical example was shown. The presented attitude also enables to calculate dynamic problems and those connected with the stability of the compressed and bending cracked beams and columns.}, subject = {Architektur }, 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 }, 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 }, language = {en} } @inproceedings{Traversoni, author = {Traversoni, Leonardo}, title = {MOVEMENT DETECTION AND RECOGNITION WITH QUATERNION WAVELETS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3027}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30274}, pages = {8}, abstract = {We show how a Morlet type quaternion wavelet may be tuned to a pair of stereoscopic {\O}lms in order to detect moving objects and calculate its velocity shape volume and other characteristics. We show some practical examples of simple objects taken with normal pocket avi cameras.}, subject = {Architektur }, language = {en} } @inproceedings{SzarataStarostina, author = {Szarata, Andrzej and Starostina, T.}, title = {MAMDANI'S FUZZY INFERENCE SYSTEM AS A TOOL FOR MULTIMODAL SPLIT MODELING}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3025}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30257}, pages = {1}, abstract = {This paper presents results of applying Fuzzy Inference System for estimation of the number of potential Park and Ride users. Usually it is difficult to evaluate the number of users because it depends on human factor and data in the considered system are uncertain. In such situation the traditional mathematical approaches can not take into consideration rough data. Therefore a fuzzy approach can be applied in this case. A fuzzy methodology is treated as a proper way to describe choice of mode of transport, and especially that uncertainty accompanied of choosing process has rather fuzzy character. The proposed approach is based on the Mamdani Fuzzy Inference System and for calculation there is used Matlab software with Fuzzy Logic Toolbox. Mamdani model requires, as an input data, knowledge of the shape of membership function. These functions can be calibrated taking into consideration results of questionnaires conducted among users of Park and Ride system. Due to lack of representative sample of users, one has decided to use results of experts' questionnaires as a input data for calibration the shape of membership functions. Describing factor will be generalized cost of the trip for different modes of transport. Proposed approach consists of two main stages: modeling of share of public/private transport trips and Multimodal model estimating number of Park and Ride users. Verification of presented methodology is treated as an indirect proof. Proposed approach can be applied for estimation of bi-modal split. Then the results are compared with traditional approaches based on logit functions. Comparable results of proposed fuzzy approach with traditional logit models can be treated as a confirmation of chosen methodology.}, subject = {Architektur }, language = {en} } @inproceedings{Ubysz, author = {Ubysz, Andrzej}, title = {MATHEMATICAL DESCRIPTION OF SELF-EXCITED VIBRATIONS IN SILO WALLS}, editor = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten}, organization = {Bauhaus-Universit{\"a}t Weimar}, doi = {10.25643/bauhaus-universitaet.3029}, url = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30294}, pages = {7}, abstract = {The paper contains a description of dynamic effects in the silo wall during the outflow of a stored material. The work allows for determining the danger of construction damage due to resonant vibrations and is of practical importance by determining the influence of cyclic pressures and vibro-creeping during prolonged use of a silo. The paper was devised as a result of tests on silo walls in semi-technical scale. The model is generally applicable and allows for identification of parameters in real- size silos as well.}, subject = {Architektur }, language = {en} }