@inproceedings{Rohr,
  author    = {Rohr, Stefan},
  title     = {NEUE M{\"O}GLICHKEITEN IN DER ABLAUFPLANUNG DURCH DIE EREIGNISORIENTIERTE SIMULATION VON PRODUKTIONSPROZESSEN},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3006},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30060},
  pages     = {63},
  abstract  = {Durch die Betrachtung des Produktions-Prozesses als zentrales Transformationselement wird die Struktur der Bauproduktion realit{\"a}tsnah gefasst. Die Integration der prozessorientierten Kostendefinition setzt relevante Kostenparameter und Produktionsfaktoren so in Beziehung, dass sie im Einklang mit der realen Kostenstruktur und Kostendynamik einer Baustelle stehen. Die Beziehung zwischen Bauzeit und Kosten wird direkt erfasst und ausgewertet. Der hohen Dynamik der Bauproduktion zwischen kapazit{\"a}tsbeschr{\"a}nkten Einsatzmitteln und Produktionsprozessen wurde durch das Poolmodell und der Simulation als Berechnungsmethode Rechnung getragen. Eine einfache Modellierung von sich zyklusartig wiederholenden Arbeitsvorg{\"a}ngen (Taktplanung) ist m{\"o}glich. Die Taktbildung vollzieht sich bei der Simulation durch Kapazit{\"a}tsbeschr{\"a}nkungen ohne Zutun des Benutzers. Durch eine Optimierungsmethode kann automatisiert nach der kosteng{\"u}nstigsten oder zeitlich schnellsten Produktionsvariante gesucht werden},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{Heinrich,
  author    = {Heinrich, Timo},
  title     = {KENNZEICHNUNGSBASIERTER ZUGRIFF VON PROZESSMODELLEN AUF OBJEKTBEST{\"A}NDE DES BAUWESENS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2966},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29669},
  pages     = {13},
  abstract  = {F{\"u}r eine beherrschbare Koordination und Durchf{\"u}hrung von Planungsaufgaben in Bauprojekten wird der Planungsprozess zunehmend in formalisierten Modellen - Prozessmodellen - beschrieben. Die Produktmodellforschung ihrerseits widmet sich der Speicherung von Planungsdaten in Form von objektorientierten Modellen im Rechner. Hauptaugenmerk sind dabei die Wahrung der Konsistenz und die Modellierung von Abh{\"a}ngigkeiten innerhalb dieses Planungsmaterials. Der Bezug zu den Akteuren der Planung wird nicht direkt hergestellt. Ein formal beschriebener Planungsprozesses kann in der Praxis noch nicht derart realisiert werden, dass ein Zugriff auf Einzelobjekte des Planungsprozesses gew{\"a}hrleistet ist. Bestehende Planungsunterst{\"u}tzungs- und Workflowmanagement-Systeme abstrahieren und ordnen das Planungsmaterial nach wie vor auf Dateiebene. Der vorliegende Artikel beschreibt eine Methode f{\"u}r die geeignete Verbindung von formalisierten Prozessmodellen in der Bauplanung mit den Einzelobjekten, die in den modellorientierten Objektmengen kodiert sind. Dabei wird die Zugeh{\"o}rigkeit bestimmter Objekte zu Pl{\"a}nen und Dokumenten (zum Zwecke des Datenaustauschs) nicht l{\"a}nger durch die physische Zuordnung zu Dateien festgelegt. Es wird ein formales Beschreibungsmittel vorgestellt, welches die entsprechende Teilmengenbildung aus der Gesamtheit der Planungsobjekte erm{\"o}glicht. F{\"u}r die bisherigen Formen des Datenaustausches werden aus den Objektmodellen der Planung Teilmengen herausgel{\"o}st und physikalisch zwischen den Planern transportiert. Das neue Beschreibungsmittel hingegen erlaubt es, die Bildungsvorschrift f{\"u}r Objektteilmengen statt der Mengen selbst zwischen den Planern auszutauschen. Der Zugriff auf die konkreten Objekte findet dann direkt modellbasiert statt.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{Heuer,
  author    = {Heuer, Andreas},
  title     = {THREE-DIMENSIONAL MODELING OF CONCRETE WITH DAMAGE AND PLASTICITY},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2967},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29671},
  pages     = {15},
  abstract  = {The concrete is modeled as a material with damage and plasticity, whereat the viscoplastic and the viscoelastic behaviour depends on the rate of the total strains. Due to the damage behaviour the compliance tensor develops different properties in tension and compression. There have been tested various yield surfaces and flow rules, damage rules respectively to their usability in a concrete model. One three-dimensional yield surface was developed from a failure surface based on the Willam--Warnke five-parameter model by the author. Only one general uni-axial stress-strain-relation is used for the numeric control of the yield surface. From that curve all necessary parameters for different strengths of concrete and different strain rates can be derived by affine transformations. For the flow rule in the compression zone a non associated inelastic potential is used, in the tension zone a Rankine potential. Conditional on the time-dependent formulation, the symmetry of the system equations is maintained in spite of the usage of non-associated potentials for the derivation of the inelastic strains. In case of quasi statical computations a simple viscoplastic law is used that is rested on an approach to Perzyna. The principle of equality of dissipation power in the uni-axial and the three-axial state of stress is used. It is modified by a factor that depends on the actual stress ratio and in comparison with the Kupfer experiments it implicates strains that are more realistic. The implementation of the concrete model is conducted in a mixed hybrid finite element. Examples in the structural level are introduced for verification of the concrete model.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BartelsZimmermann,
  author    = {Bartels, Jan-Hendrik and Zimmermann, J{\"u}rgen},
  title     = {MINIMIZING THE TOTAL DISCOUNTED COST OF DISMANTLING A NUCLEAR POWER PLANT},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2920},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29200},
  pages     = {9},
  abstract  = {Due to economical, technical or political reasons all over the world about 100 nuclear power plants have been disconnected until today. All these power stations are still waiting for their complete dismantling which, considering one reactor, causes cost of up to one Bil. Euros and lasts up to 15 years. In our contribution we present a resource-constrained project scheduling approach minimizing the total discounted cost of dismantling a nuclear power plant. A project of dismantling a nuclear power plant can be subdivided into a number of disassembling activities. The execution of these activities requires time and scarce resources like manpower, special equipment or storage facilities for the contaminated material arising from the dismantling. Moreover, we have to regard several minimum and maximum time lags (temporal constraints) between the start times of the different activities. Finally, each disassembling activity can be processed in two alternative execution modes, which lead to different disbursements and determine the resource requirements of the considered activity. The optimization problem is to determine a start time and an execution mode for each activity, such that the discounted cost of the project is minimum, and neither the temporal constraints are violated nor the activities' resource requirements exceed the availability of any scarce resource at any point in time. In our contribution we introduce an appropriate multi-mode project scheduling model with minimum and maximum time lags as well as renewable and cumulative resources for the described optimization problem. Furthermore, we show that the considered optimization problem is NP-hard in the strong sense. For small problem instances, optimal solutions can be gained from a relaxation based enumeration approach which is incorporated into a branch and bound algorithm. In order to be able to solve large problem instances, we also propose a truncated version of the devised branch and bound algorithm.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{EiermannErnstUllmann,
  author    = {Eiermann, Michael and Ernst, O. and Ullmann, Elisabeth},
  title     = {SOLUTION STRATEGIES FOR STOCHASTIC FINITE ELEMENT DISCRETIZATIONS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2949},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29493},
  pages     = {11},
  abstract  = {We consider efficient numerical methods for the solution of partial differential equations with stochastic coefficients or right hand side. The discretization is performed by the stochastic finite element method (SFEM). Separation of spatial and stochastic variables in the random input data is achieved via a Karhunen-Lo{\`e}ve expansion or Wiener's polynomial chaos expansion. We discuss solution strategies for the Galerkin system that take advantage of the special structure of the system matrix. For stochastic coefficients linear in a set of independent random variables we employ Krylov subspace recycling techniques after having decoupled the large SFEM stiffness matrix.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BeranHromada,
  author    = {Beran, V{\´a}clav and Hromada, E.},
  title     = {SOFTWARE FOR PROJECT RELIABILITY ESTIMATION AND RISK EVALUATION},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2925},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29255},
  pages     = {16},
  abstract  = {The contribution presents a model that is able to simulate construction duration and cost for a building project. This model predicts set of expected project costs and duration schedule depending on input parameters such as production speed, scope of work, time schedule, bonding conditions and maximum and minimum deviations from scope of work and production speed. The simulation model is able to calculate, on the basis of input level of probability, the adequate construction cost and time duration of a project. The reciprocal view attends to finding out the adequate level of probability for construction cost and activity durations. Among interpretive outputs of the application software belongs the compilation of a presumed dynamic progress chart. This progress chart represents the expected scenario of development of a building project with the mapping of potential time dislocations for particular activities. The calculation of a presumed dynamic progress chart is based on an algorithm, which calculates mean values as a partial result of the simulated building project. Construction cost and time models are, in many ways, useful tools in project management. Clients are able to make proper decisions about the time and cost schedules of their investments. Consequently, building contractors are able to schedule predicted project cost and duration before any decision is finalized.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{GruberValdman,
  author    = {Gruber, Peter and Valdman, J.},
  title     = {APPROXIMATE SOLUTION OF ELASTOPLASTIC PROBLEMS BASED ON THE MOREAU-YOSIDA THEOREM},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2960},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29602},
  pages     = {8},
  abstract  = {We propose a new approach to the numerical solution of quasi-static elastic-plastic problems based on the Moreau-Yosida theorem. After the time discretization, the problem is expressed as an energy minimization problem for unknown displacement and plastic strain fields. The dependency of the minimization functional on the displacement is smooth whereas the dependency on the plastic strain is non-smooth. Besides, there exists an explicit formula, how to calculate the plastic strain from a given displacement field. This allows us to reformulate the original problem as a minimization problem in the displacement only. Using the Moreau-Yosida theorem from the convex analysis, the minimization functional in the displacements turns out to be Frechet-differentiable, although the hidden dependency on the plastic strain is non-differentiable. The seconds derivative exists everywhere apart from the elastic-plastic interface dividing elastic and plastic zones of the continuum. This motivates to implement a Newton-like method, which converges super-linearly as can be observed in our numerical experiments.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{HapurneNistor,
  author    = {Hapurne, Tania Mariana and Nistor, S.},
  title     = {USING MODERN TECHNOLOGIES TO UPGRADE EDILITARY URBAN INFRASTRUCTURE},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2965},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29650},
  pages     = {6},
  abstract  = {Adopting the European laws concerning environmental protection will require sustained efforts of the authorities and communities from Romania; implementing modern solutions will become a fast and effective option for the improvement of the functioning systems, in order to prevent disasters. As a part of the urban infrastructure, the drainage networks of pluvial and residual waters are included in the plan of promoting the systems which protect the environmental quality, with the purpose of integrated and adaptive management. The paper presents a distributed control system for sewer network of Iasi town. Unsatisfactory technical state of the actual sewer system is exposed, focusing on objectives related to implementation of the control system. The proposed distributed control system of Iasi drainage network is based on the implementation of the hierarchic control theory for diagnose, sewer planning and management. There are proposed two control levels: coordinating and local execution. Configuration of the distributed control system, including data acquisition and conversion equipment, interface characteristics, local data bus, data communication network, station configuration are widely described. The project wish to be an useful instrument for the local authorities in the preventing and reducing the impact of future natural disasters over the urban areas by means of modern technologies.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{ZimmermannBartels,
  author    = {Zimmermann, J{\"u}rgen and Bartels, Jan-Hendrik},
  title     = {TREE-BASED METHODS FOR RESOURCE INVESTMENT AND RESOURCE LEVELLING PROBLEMS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3040},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30405},
  pages     = {6},
  abstract  = {The execution of project activities generally requires the use of (renewable) resources like machines, equipment or manpower. The resource allocation problem consists in assigning time intervals to the execution of the project activities while taking into account temporal constraints between activities emanating from technological or organizational requirements and costs incurred by the resource allocation. If the total procurement cost of the different renewable resources has to be minimized we speak of a resource investment problem. If the cost depends on the smoothness of the resource utilization over time the underlying problem is called a resource levelling problem. In this paper we consider a new tree-based enumeration method for solving resource investment and resource levelling problems exploiting some fundamental properties of spanning trees. The enumeration scheme is embedded in a branch-and-bound procedure using a workload-based lower bound and a depth first search. Preliminary computational results show that the proposed procedure is promising for instances with up to 30 activities.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{AibaMaegaitoSuzuki,
  author    = {Aiba, Yoshihisa and Maegaito, Kentaro and Suzuki, Osamu},
  title     = {Iteration dynamical systems of discrete Laplacians on the plane lattice(I) (Basic properties and computer simulations of the dynamical systems)},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2917},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29178},
  pages     = {3},
  abstract  = {In this study we introduce a concept of discrete Laplacian on the plane lattice and consider its iteration dynamical system. At first we discuss some basic properties on the dynamical system to be proved. Next making their computer simulations, we show that we can realize the following phenomena quite well:(1) The crystal of waters (2) The designs of carpets, embroideries (3) The time change of the numbers of families of extinct animals, and (4) The echo systems of life things. Hence we may expect that we can understand the evolutions and self organizations by use of the dynamical systems. Here we want to make a stress on the following fact: Although several well known chaotic dynamical systems can describe chaotic phenomena, they have difficulties in the descriptions of the evolutions and self organizations.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{DoganArditiGunaydin,
  author    = {Dogan, Sevgi Zeynep and Arditi, D. and Gunaydin, H. Murat},
  title     = {COMPARISON OF ANN AND CBR MODELS FOR EARLY COST PREDICTION OF STRUCTURAL SYSTEMS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2942},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29421},
  abstract  = {Reasonably accurate cost estimation of the structural system is quite desirable at the early stages of the design process of a construction project. However, the numerous interactions among the many cost-variables make the prediction difficult. Artificial neural networks (ANN) and case-based reasoning (CBR) are reported to overcome this difficulty. This paper presents a comparison of CBR and ANN augmented by genetic algorithms (GA) conducted by using spreadsheet simulations. GA was used to determine the optimum weights for the ANN and CBR models. The cost data of twenty-nine actual cases of residential building projects were used as an example application. Two different sets of cases were randomly selected from the data set for training and testing purposes. Prediction rates of 84\% in the GA/CBR study and 89\% in the GA/ANN study were obtained. The advantages and disadvantages of the two approaches are discussed in the light of the experiments and the findings. It appears that GA/ANN is a more suitable model for this example of cost estimation where the prediction of numerical values is required and only a limited number of cases exist. The integration of GA into CBR and ANN in a spreadsheet format is likely to improve the prediction rates.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{BauerRichter,
  author    = {Bauer, Marek and Richter, Matthias},
  title     = {STATISTICAL ANALYSIS OF TIME LOST BY TRAMS BEFORE DEPARTURE FROM STOPS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2922},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29226},
  pages     = {18},
  abstract  = {The ride of the tram along the line, defined by a time-table, consists of the travel time between the subsequent sections and the time spent by tram on the stops. In the paper, statistical data collected in the city of Krakow is presented and evaluated. In polish conditions, for trams the time spent on stops makes up the remarkable amount of 30 \% of the total time of tram line operation. Moreover, this time is characterized by large variability. The time spent by tram on a stop consists of alighting and boarding time and time lost by tram on stop after alighting and boarding time ending, but before departure. Alighting and boarding time itself usually depends on the random number of alighting and boarding passengers and also on the number of passengers which are inside the vehicle. However, the time spent by tram on stop after alighting and boarding time ending is an effect of certain random events, mainly because of impossibility of departure from stop, caused by lack of priorities for public transport vehicles. The main focus of the talk lies on the description and the modelling of these effects. This paper is involved with CIVITAS-CARAVEL project: "Clean and better transport in cites". The project has received research funding from the Community's Sixth Framework Programme. The paper reflects only the author's views and the Community is not liable for any use that may be made of the information contained therein.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Jahnke,
  author    = {Jahnke, Georg},
  title     = {HISTORISCHE BAUSUBSTANZ IN MECKLENBURG},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2971},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29719},
  pages     = {11},
  abstract  = {Mit diesen Ausf{\"u}hrungen wird ein Beitrag zum weiteren Erhalt der historischen Bausubstanz in Mecklenburg aus der Sicht der Tragwerksanalyse geleistet. Dabei best{\"a}tigt es sich immer mehr, dass mit dem Modell der Geometrie, der Belastung und des Materials gleichberechtigte Modelle f{\"u}r eine wirklichkeitsnahe Einsch{\"a}tzung des Tragverhaltens eines Tragwerks vorliegen m{\"u}ssen. Es zeigt sich, dass dabei die besten Berechnungsprogramme nur die Ergebnisse liefern k{\"o}nnen, die mit den Eingabedaten zu erzielen sind. So hat sich der Forschungsschwerpunkt im Lehrgebiet Tragwerkslehre des FB Architektur an der Hochschule Wismar in den letzten Jahren auf die realistische Abbildung der Wechselwirkung zwischen der Bauaufnahme und der geometrischen Modellierung konzentriert. In diesem Bereich zeigen sich als Schwerpunkte die Wechselwirkung zwischen Sch{\"a}den und Tragwerksanalyse und die Wechselwirkung zwischen der aufgenommenen Geometrie und dem geometrischen Modell f{\"u}r die Tragwerksanalyse. Die F{\"u}lle der aufgenommenen Daten sind dabei in der Regel mehr hinderlich als ein Segen f{\"u}r die Tragwerksanalyse. Hier wurde gezeigt, welche und wie viele geometrische Daten f{\"u}r das geometrische Modell f{\"u}r die Tragwerksanalyse sinnvoll sind. Da die eigene Datenaufnahme relativ viel Zeit beansprucht, wurde eine "geistige" Bauaufnahme durchgef{\"u}hrt. Dazu wird der historische Planungsprozess in den einzelnen Formfindungsschritten nachvollzogen und in die virtuelle Realit{\"a}t {\"u}berf{\"u}hrt. Mit dieser Methode ergeben sich unterschiedliche Bauzust{\"a}nde und es lassen sich auch m{\"o}gliche Bauphasen abbilden. Die Tragwerksanalyse dieser virtuellen Realit{\"a}t zeigt dann m{\"o}gliche Schw{\"a}chen der Tragwerke und/oder die Notwendigkeit konstruktiver Ver{\"a}nderungen. Ein Vergleich der Ergebnisse der Tragwerksanalyse mit der Realit{\"a}t anhand des vorliegenden Datenbestands liefert die Grundlage f{\"u}r den aktuellen Handlungsbedarf. Da der Bauzustand eines Bauwerkes unter einer zeitlichen Ver{\"a}nderung steht, werden Methoden {\"u}berpr{\"u}ft, die es erm{\"o}glichen, einen einmal vorgelegten Datenbestand aufzubereiten und weiter zu verwalten.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{DeaconvanRooyen,
  author    = {Deacon, Michael-John and van Rooyen, G.C.},
  title     = {DISTRIBUTED COLLABORATION: ENGINEERING PRACTICE REQUIREMENTS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2941},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29410},
  pages     = {8},
  abstract  = {Designing a structure follows a pattern of creating a structural design concept, executing a finite element analysis and developing a design model. A project was undertaken to create computer support for executing these tasks within a collaborative environment. This study focuses on developing a software architecture that integrates the various structural design aspects into a seamless functional collaboratory that satisfies engineering practice requirements. The collaboratory is to support both homogeneous collaboration i.e. between users operating on the same model and heterogeneous collaboration i.e. between users operating on different model types. Collaboration can take place synchronously or asynchronously, and the information exchange is done either at the granularity of objects or at the granularity of models. The objective is to determine from practicing engineers which configurations they regard as best and what features are essential for working in a collaborative environment. Based on the suggestions of these engineers a specification of a collaboration configuration that satisfies engineering practice requirements will be developed.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{DudekRichter,
  author    = {Dudek, Mariusz and Richter, Matthias},
  title     = {UNTERSUCHUNGEN ZUR ZUVERL{\"A}SSIGKEIT DES STRAßENBAHNNETZES IN KRAKAU},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2943},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29432},
  pages     = {19},
  abstract  = {Der Begriff der Zuverl{\"a}ssigkeit spielt eine zentrale Rolle bei der Bewertung von Verkehrsnetzen. Aus der Sicht der Nutzer des {\"o}ffentlichen Personennahverkehrs ({\"O}PNV) ist eines der wichtigsten Kriterien zur Beurteilung der Qualit{\"a}t des Liniennetzes, ob es m{\"o}glich ist, mit einer großen Sicherheit das Reiseziel in einer vorgegebenen Zeit zu erreichen. Im Vortrag soll dieser Zuverl{\"a}ssigkeitsbegriff mathematisch gefasst werden. Dabei wird zun{\"a}chst auf den {\"u}blichen Begriff der Zuverl{\"a}ssigkeit eines Netzes im Sinne paarweiser Zusammenhangswahrscheinlichkeiten eingegangen. Dieser Begriff wird erweitert durch die Betrachtung der Zuverl{\"a}ssigkeit unter Einbeziehung einer maximal zul{\"a}ssigen Reisezeit. In vergangenen Arbeiten hat sich die Ring-Radius-Struktur als bew{\"a}hrtes Modell f{\"u}r die theoretische Beschreibung von Verkehrsnetzen erwiesen. Diese {\"U}berlegungen sollen nun durch Einbeziehung realer Verkehrsnetzstrukturen erweitert werden. Als konkretes Beispiel dient das Straßenbahnnetz von Krakau. Hier soll insbesondere untersucht werden, welche Auswirkungen ein geplanter Ausbau des Netzes auf die Zuverl{\"a}ssigkeit haben wird. This paper is involved with CIVITAS-CARAVEL project: "Clean and better transport in cites". The project has received research funding from the Community's Sixth Framework Programme. The paper reflects only the author's views and the Community is not liable for any use that may be made of the information contained therein.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{Bilchuk,
  author    = {Bilchuk, Irina},
  title     = {GEOMETRIC IDENTIFICATION OF OBJECTS IN CIVIL ENGINEERING APPLICATIONS},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2927},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29274},
  pages     = {21},
  abstract  = {Objects for civil engineering applications can be identified with their reference in memory, their alpha-numeric name or their geometric location. Particularly in graphic user interfaces, it is common to identify objects geometrically by selection with the mouse. As the number of geometric objects in a graphic user interface grows, it becomes increasingly more important to treat the basic operations add, search and remove for geometric objects with great efficiency. Guttmann has proposed the Region-Tree (R-tree) for geometric identification in an environment which uses pages on disc as data structure. Minimal bounding rectangles are used to structure the data in such a way that neighborhood relations can be described effectively. The literature shows that the parameters which influence the efficiency of the R-trees have been studied extensively, but without conclusive results. The goal of the research which is reported in this paper is to determine reliably the parameters which significantly influence the efficiency of R-trees for geometric identification in technical drawings. In order to make this investigation conclusive, it must be performed with the best available software technology. Therefore an object-oriented software for the method is developed. This implementation is tested with technical drawings containing many thousands of geometric objects. These drawings are created automatically by a stochastic generator which is incorporated into a test bed consisting of an editor and a visualisor. This test bed is used to obtain statistics for the main factors which affect the efficiency of R-trees. The investigation shows that the following main factors which affect the efficiency can be identified reliably : number of geometric objects on the drawing the minimum und maximum number of children of a node of the tree the maximum width and height of the minimal bounding rectangles of the geometric objects relative to the size of the drawing.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@inproceedings{Goettlicher,
  author    = {G{\"o}ttlicher, Manfred},
  title     = {HYBRID SOLID-LIQUID MODEL FOR GRANULAR MATERIAL},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.2959},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-29596},
  pages     = {20},
  abstract  = {Solid behavior as well as liquid behavior characterizes the flow of granular material in silos. The presented model is based on an appropriate interaction of a displacement field and a velocity field. The constitutive equations and the applied algorithm are developed from the exact solution for a standard case. The standard case evolves from a very tall vertical plane strain silo containing material that flows at a constant speed. No horizontal displacements and velocities take place. No changes regarding the field values arise in the vertical direction and in time. Tension is not allowed at any point. Coulomb friction represents the effects of the vertical walls. The interaction between the flowing material and the walls is covered by a forced boundary condition resulting in an additional matrix for the solid component as well as for the liquid component. The resulting integral equations are designed to be solved directly. Three coefficients describe the properties of the granular material. They govern elastic solid behavior in combination with viscous liquid behavior.},
  subject      = {Architektur <Informatik>},
  language  = {de}
}
@inproceedings{Schiller,
  author    = {Schiller, Christian},
  title     = {CONSTRAINED TRAFFIC DEMAND MODELS - SIMULTANEOUS DISTRIBUTION AND MODE CHOICE},
  editor    = {G{\"u}rlebeck, Klaus and K{\"o}nke, Carsten},
  organization    = {Bauhaus-Universit{\"a}t Weimar},
  doi       = {10.25643/bauhaus-universitaet.3014},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20170327-30148},
  pages     = {16},
  abstract  = {Unconstrained models are very often found in the broad spectrum of different theories of traffic demand models. In these models there are none or only one-sided restrictions influencing the choice of the individual. However in the traffic demand different deciding dependencies of the traffic volume with regard to the specific conditions of the territory structure potentials exist. Kichhoff and Lohse introduced bi- and tri-linearly constrained models to show these dependencies. In principle, the dependencies are described as hard, elastic and open boundary sum criteria. In this article a model is formulated which gets away from these predefined boundary sum criteria and allows a free determination of minimal and maximal boundary sum criteria. The iterative solution algorithm is shown according to a FURNESS procedure at the same time. With the approach of freely selectable minimal and maximal boundary sum criteria the modeling transport planner gets the possibility to show the traffic event even better. Furthermore all common boundary sum criteria can be calculated with this model. Therewith the often necessary and sensible standard and special cases can also be modeled.},
  subject      = {Architektur <Informatik>},
  language  = {en}
}
@techreport{Schaber2006,
  author    = {Schaber, Carsten},
  title     = {Strategic Developments},
  series = {Yearbook of Model Projects 2005 / 2006},
  journal   = {Yearbook of Model Projects 2005 / 2006},
  doi       = {10.25643/bauhaus-universitaet.820},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-8207},
  year      = {2006},
  abstract  = {The report is about the role of Regional Development Agencies (RDAs)in England. These were founded in 1999. At first their concept, aims and orgins are addressed. Secondly the work of such an agency is explained exemplary by introducing the monitoring report Strategic Developments.},
  subject      = {Landesentwicklungsgesellschaft},
  language  = {en}
}
@techreport{GrossMarquardt2006,
  author    = {Gross, Tom and Marquardt, Nicolai},
  title     = {CollaborationBus: An Editor for the Easy Configuration of Complex Ubiquitous Environment},
  doi       = {10.25643/bauhaus-universitaet.746},
  url       = {http://nbn-resolving.de/urn:nbn:de:gbv:wim2-20111215-7463},
  year      = {2006},
  abstract  = {Early sensor-based infrastructures were often developed by experts with a thorough knowledge of base technology for sensing information, for processing the captured data, and for adapting the system's behaviour accordingly. In this paper we argue that also end-users should be able to configure Ubiquitous Computing environments. We introduce the CollaborationBus application: a graphical editor that provides abstractions from base technology and thereby allows multifarious users to configure Ubiquitous Computing environments. By composing pipelines users can easily specify the information flows from selected sensors via optional filters for processing the sensor data to actuators changing the system behaviour according to the users' wishes. Users can compose pipelines for both home and work environments. An integrated sharing mechanism allows them to share their own compositions, and to reuse and build upon others' compositions. Real-time visualisations help them understand how the information flows through their pipelines. In this paper we present the concept, implementation, and early user feedback of the CollaborationBus application.},
  subject      = {Angewandte Informatik},
  language  = {en}
}