Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Abteilungen OPUS4-244 Wissenschaftlicher Artikel Semenov, Vitaly; Alekseeva, Elena; Tarlapan, Oleg Virtual Construction using Map-based Approach The paper presents a general map-based approach to prototyping of products in virtual reality environments. Virtual prototyping of products is considered as a consistent simulation and visualization process mapping the source product model into its target visual representations. The approach enables to interrelate formally the product and visual information models with each other by defining mapping rules, to specify a prototyping scenario as a composition of map instances, and then to explore particular product models in virtual reality environments by interpreting the composed scenario. Having been realized, the proposed approach provides for the strongly formalized method and the common software framework to build virtual prototyping applications. As a result, the applications gain in expressiveness, reusability and reliability, as well as take on additional runtime flexibility... 2004 urn:nbn:de:gbv:wim2-20111215-2447 10.25643/bauhaus-universitaet.244 Professur Informatik im Bauwesen OPUS4-1449 Wissenschaftlicher Artikel König, Reinhard; Thurow, Torsten; Braunes, Jörg; Donath, Dirk; Schneider, Sven Technische Einführung in FREAC: A Framework for Enhancing Research in Architectural Design and Communication Im vorliegenden Beitrag wird ein Framework für ein verteiltes dynamisches Produktmodell (FREAC) vorgestellt, welches der experimentellen Softwareentwicklung dient. Bei der Entwicklung von FREAC wurde versucht, folgende Eigenschaften umzusetzen, die bei herkömmlichen Systemen weitgehend fehlen: Erstens eine hohe Flexibilität, also eine möglichst hohe Anpassbarkeit für unterschiedliche Fachdisziplinen; Zweitens die Möglichkeit, verschiedene Tools nahtlos miteinander zu verknüpfen; Drittens die verteilte Modellbearbeitung in Echtzeit; Viertens das Abspeichern des gesamten Modell-Bearbeitungsprozesses; Fünftens eine dynamische Erweiterbarkeit sowohl für Softwareentwickler, als auch für die Nutzer der Tools. Die Bezeichnung FREAC umfasst sowohl das Framework zur Entwicklung und Pflege eines Produktmodells (FREAC-Development) als auch die entwickelten Tools selbst (FREAC-Tools). 2010 urn:nbn:de:101:1-201105183216 10.25643/bauhaus-universitaet.1449 Professur Informatik in der Architektur OPUS4-243 Wissenschaftlicher Artikel Romberg, Richard; Niggl, Andreas; van Treeck, Christoph Structural Analysis based on the Product Model Standard IFC In this paper we present a computer aided method supporting co-operation between different project partners, such as architects and engineers, on the basis of strictly three-dimensional models. The center of our software architecture is a product model, described by the Industry Foundation Classes (IFC) of the International Alliance for Interoperability (IAI). From this a geometrical model is extracted and automatically transferred to a computational model serving as a basis for various simulation tasks. In this paper the focus is set on the advantage of the fully three-dimensional structural analysis performed by p-version of the finite element analysis. Other simulation methods are discussed in a separate contribution of this Volume (Treeck 2004). The validity of this approach will be shown in a complex example. 2004 urn:nbn:de:gbv:wim2-20111215-2433 10.25643/bauhaus-universitaet.243 Professur Informatik im Bauwesen OPUS4-242 Wissenschaftlicher Artikel Kiviniemi, Arto; Fischer, Martin Requirements Management Interface to Building Product Models In current AEC practice client requirements are typically recorded in a building program, which, depending on the building type, covers various aspects from the overall goals, activities and spatial needs to very detailed material and condition requirements. This documentation is used as the starting point of the design process, but as the design progresses, it is usually left aside and changes are made incrementally based on the previous design solution. These incremental small changes can lead to a solution that may no longer meet the original requirements. In addition, design is by nature an iterative process and the proposed solutions often also cause evolution in the client requirements. However, the requirements documentation is usually not updated accordingly. Finding the latest updates and evolution of the requirements from the documentation is very difficult, if not impossible. This process can lead to an end result, which is significantly different from the documented requirements. Some important requirements may not be satisfied, and even if the design process was based on agreed-upon changes in the scope and requirements, differences in the requirements documents and in the completed building can lead to well-justified doubts about the quality of the design and construction process... 2004 urn:nbn:de:gbv:wim2-20111215-2427 10.25643/bauhaus-universitaet.242 Professur Informatik im Bauwesen OPUS4-183 Konferenzveröffentlichung Berkhahn, Volker; Kinkeldey, Christoph; Schleinkofer, Matthias Re-Engineering Based on Construction Drawings - From Ground Floor Plan to Product Model For the management or reorganisation of existing buildings, data concerning dimensions and construction are necessary. Often these data are given exclusively by paper-based drawings and no digital data such as a computer based product model or even a CAD-model are available. In order to perform mass calculation, damage mapping or a recalculation of the structure these drawings of the building under consideration have to be analysed manually by the engineer. This is a very time-consuming job. In order to close this gap between drawings of an existing building and a digital product model an approach is presented in this paper to digitise a drawing, to build up geometric and topologic models and to recognise construction parts of the building. Finally all recognised parts are transformed into a three-dimensional geometric model which provides all necessary geometric information for the product model. During this import process the semantics of a ground floor plan has to be converted into a 3D-model. 2004 urn:nbn:de:gbv:wim2-20111215-1832 10.25643/bauhaus-universitaet.183 Professur Informatik im Bauwesen OPUS4-211 Wissenschaftlicher Artikel Firmenich, Berthold Product Models in Network Based Co-operation in Structural Engineering The Priority Programme 'Network Based Co-operation in Structural Engineering' of the 'German Research Foundation' (DFG) has been established in the year 2000. This paper describes and discusses the main research directions and first results of the workgroup 'Distributed Product Models'. The five projects of the workgroup have developed completely different solutions for specific application domains. Each solution concept deals with a consistent product modeling and knowledge processing in a distributed environment in the planning process. The individual solution approaches of the projects are described and the underlying basic assumptions are discussed. A unified system architecture is described for all projects of the workgroup. Two different approaches (object-oriented and graph-based models) have been introduced for product and knowledge modeling. The common structure of these models will be explained to fully understand the differences of these modeling approaches. Finally the concepts for co-operative work and conflict management in a distributed environment are described: The solution approaches will be distinguished by classifying the supported co-operation according to time. A final scientific summary describes the state-of-the-art in network based co-operation in structural engineering: The role of research directions like knowledge modeling, standard product modeling and versioning in the distributed planning process will be explained. 2004 urn:nbn:de:gbv:wim2-20111215-2119 10.25643/bauhaus-universitaet.211 Professur Informatik im Bauwesen OPUS4-152 Konferenzveröffentlichung Hänninen, Reijo; Laine, Tuomas Product Models and Life Cycle Data Management in real Projects Building project, with many different players involved, requires open and commonly accepted standard for product model description. Product model based design tools support easy comparisons of design alternatives and optimisation of design solution technical quality. This supports client s decision-making and design target comparisons through the whole building project. Use of product models enable these tasks to meet both schedule and cost requirements Olof Granlund is using product models and interoperable software as the main tool in projects. The use and the realised benefits are illustrated by examples from 3 different real projects: University building, where product models were used already in the very early phases by the whole design team. Office building for research organisation, where product models were used in so called self-reporting building system. Headquarters for international company, where product models were widely used for building performance analysis and visualisations in design phase as well as for facilities management system configuration for operational phase. 2004 urn:nbn:de:gbv:wim2-20111215-1528 10.25643/bauhaus-universitaet.152 Professur Informatik im Bauwesen OPUS4-241 Wissenschaftlicher Artikel Holtzhauer, Eric; Saal, Helmut Product modelling in the steel construction domain The complexity of the relationships between the actors of a building project requires high efficiency in communication. Among other things, data sharing is crucial. The exchange of data is made possible by interfaces between expert programs, which rely on product models. The latter are neutral standards with formal definitions of building objects and their attributes. This paper deals with the state of the art and the research activities concerning product models in the steel construction domain and the advantages provided by this technology for the sector. 2004 urn:nbn:de:gbv:wim2-20111215-2415 10.25643/bauhaus-universitaet.241 Professur Informatik im Bauwesen OPUS4-240 Wissenschaftlicher Artikel Kang, Shihchung; Miranda, Eduardo Physics Based Model for Simulating the Dynamics of Tower Cranes The goal of the research is to increase the understanding of dynamic behaviors during the crane operation, and develops computer-aided methods to improve the training of crane operators. There are approximately 125,000 cranes in operation today in the construction industry, responsible for major portion of erection activities. Unfortunately, many accidents occur every year in the U.S. and other countries related to the operation of cranes in construction sites. For example on November 28, 1989 a tower crane collapse during the construction of a building in San Francisco killing four construction workers, one civilian and injuring 28. According to the statistics from Occupational Safety Health Administration (OSHA), there were 137 crane-related fatalities from 1992 to 2001 in the US. A well-known internet website that keeps track of crane-related accidents (craneaccidents.com), reports 516 accidents and 277 fatalities from 2000 to 2002. These statistics show that even though many measures have been taken to decrease the number of crane-related accidents (Braam, 2002), the number of crane related accidents is still very large. It is important to recognize that each construction related fatality is not only a great human loss but also increases the costs of insurance, lawsuits, and the construction budget due to delay of a project (Paulson 1992)... 2004 urn:nbn:de:gbv:wim2-20111215-2409 10.25643/bauhaus-universitaet.240 Professur Informatik im Bauwesen OPUS4-238 Wissenschaftlicher Artikel Gao, Zuoren; Wu, Weiyu; Ren, Aizhu Physically Based Modeling and Multi-Physical Simulation System for Wood Structure Fire Performance This research is devoted to promoting the performance-based engineering in wood structure fire. It looks into the characteristic of the material, structural composing and collapse detecting to find out the main factors in the wood structure collapse in fire. The aim of the research is to provide an automatic simulation platform for the complicated circulation. A physically based model for slim member for beams and columns and a frame of multi-physical simulation are provided to implement the system. The physically based model contains material model, structural mechanics model, material mechanics model, as well as geometry model for the compositive simulation. The multi-physical simulation is built on the model and has the capacity to carry out a simulation combining structural, fire (thermal, CFD) and material degradation simulation. The structural and fire simulation rely on two sophisticated software respectively, ANSYS (an FEA software) and FDS (with a core of CFD). Researchers of the paper develop system by themselves to combine the two existing ones. The system has the capability to calculate the wood char to find out the loss of cross-section and to detect the collapse caused in different ways. The paper gives a sample of Chinese traditional house to show how this simulation system works. 2004 urn:nbn:de:gbv:wim2-20111215-2381 10.25643/bauhaus-universitaet.238 Professur Informatik im Bauwesen OPUS4-237 Wissenschaftlicher Artikel Shih, Naai-Jung; Lee, Wen-Pang Particle Simulation and Evaluation of Personal Exposure to Contaminant Sources in an Elevation Space An elevator, which figures a small volume, is normally used by everyone for a short period of time and equipped with simple ventilation system..Any contaminant released within it may cause serious problem. This research adapt a fire and smoke simulation software (FDS) into non-fire indoor airflow scario. Differently from previous research, particles are chosen as a risk evalution unit. A personal and multi-personal exposure model is proposed. The model takes the influence of the human thermal boundary, coughing, inhalation, exhalation, standing position, and the fan factor into account. The model is easy-to-use and suitable for the design of elevator system in practice. 2004 urn:nbn:de:gbv:wim2-20111215-2376 10.25643/bauhaus-universitaet.237 Professur Informatik im Bauwesen OPUS4-236 Wissenschaftlicher Artikel Vogel, Manfred; Breit, Manfred; Märki, Fabian Optimization of 4D Process Planning using Genetic Algorithms The presented work focuses on the presentation of a discrete event simulator which can be used for automated sequencing and optimization of building processes. The sequencing is based on the commonly used component-activity-resource relations taking structural and process constraints into account. For the optimization a genetic algorithm approach was developed, implemented and successfully applied to several real life steel constructions. In this contribution we discuss the application of the discrete event simulator including its optimization capabilities on a 4D process model of a steel structure of an automobile recycling facility. 2004 urn:nbn:de:gbv:wim2-20111215-2360 10.25643/bauhaus-universitaet.236 Professur Informatik im Bauwesen OPUS4-210 Wissenschaftlicher Artikel Schnellenbach-Held, Martina; Hartmann, Markus Knowledge Based Systems in Distributed Desgin Environments Today's building industry not only demands more and more reduced construction time on building site, but also an advanced and mostly construction attendant design phase. Even though there is software available to support design processes in distributed environments, most applications only support simple document based exchange of information. In this paper a knowledge based system is presented to support cooperative, comprehensive design processes in distributed environments. The presented research project is financially supported by the German Research Community (DFG - Deutsche Forschungsgemeinschaft). 2004 urn:nbn:de:gbv:wim2-20111215-2106 10.25643/bauhaus-universitaet.210 Professur Informatik im Bauwesen OPUS4-209 Wissenschaftlicher Artikel Kraft, Bodo; Wilhelms, Nils Interactive Distributed Knowledge Support for Conceptual Building Design In our project, we develop new tools for the conceptual design phase. During conceptual design, the coarse functionality and organization of a building is more important than a detailed worked out construction. We identify two roles, first the knowledge engineer who is responsible for knowledge definition and maintenance; second the architect who elaborates the conceptual design. The tool for the knowledge engineer is based on graph technology, it is specified using PROGRES and the UPGRADE framework. The tools for the architect are integrated to the industrial CAD tool ArchiCAD. Consistency between knowledge and conceptual design is ensured by the constraint checker, another extension to ArchiCAD. 2004 urn:nbn:de:gbv:wim2-20111215-2094 10.25643/bauhaus-universitaet.209 Professur Informatik im Bauwesen OPUS4-235 Wissenschaftlicher Artikel Neuberg, Frank; Fank, Ernst; Ekkerlein, Christian Integrated Life Cycle Simulation and Assessment of Buildings Buildings require both for construction and, due to their comparatively long life cycle for maintenance, significant raw material and energy resources. So far available knowledge about resource consumption during an entire life cycle of a building is still quite rare, because various criteria affect each other and/or overlay mutually. In this contribution a model based software concept is presented using an integrated approach for life cycle simulation and assessment of buildings. The essential point of the development consists of connecting an IFC compliant product model of a building via the Internet with data bases for the resource and energy requirement of building materials. Furthermore, numerical simulations allow calculating and minimizing the energy consumption, the resource requirement, the waste streams and also the noxious emissions. In the context of this paper we present the first release of software programs for architects and engineers, which help them to evaluate their design decisions objectively in early planning steps. Additionally the usage of the software is demonstrated by a test case study for a real world building. By applying this software in practice a substantial contribution for saving energy and natural resources can be provided in the sense of sustainable and ecological building design. 2004 urn:nbn:de:gbv:wim2-20111215-2351 10.25643/bauhaus-universitaet.235 Professur Informatik im Bauwesen OPUS4-445 Konferenzveröffentlichung Wasserfuhr, R.; Scherer, Raimar J. Information Management in the Concurrent Design Process Former achievements for integrated information management have concentrated on interoperability of applications like e.g. CAD, structural analysis or facility management, based on product models introducing additional application independent model layers (core models). In the last years it has become clear, that besides interoperability of autonomous applications, the concurrent processes of model instantiation and evolution have to be modeled, including the relationship to available project resources, persons, legal requirements and communication infrastructure. This paper discusses some basic concepts for an emerging methodology relating the fields of product modeling, project management and workflow systems by elaborating the concept of a process model, which gives a decomposition of the project goals into executable activities. Integrated information management systems should be related to process models to detect pending activities, deadlocks and alternatives of execution. According to the heterogeneous nature of project communication processes, a method for dynamic classification of ad-hoc activities is suggested, that complements predefined highlevel process definitions. In a brief outline of the system architecture, we show how sophisticated information management systems can be broadly made available by using conventional Internet technologies. 1997 urn:nbn:de:gbv:wim2-20111215-4456 10.25643/bauhaus-universitaet.445 Professur Informatik im Bauwesen OPUS4-234 Wissenschaftlicher Artikel Makanae, Koji Highway Sequence Editor based on the Length-based Highway Product Model The highway product model based on the length information of the centerline, and the application system is developed. This paper shows the schema and the modeling process of the product model, which includes geometric elements such as an alignment, lanes, sidewalks, shoulders and sprits, and accessories such as guard fences, plantings and signs. Furthermore, The Highway Sequence Editor (HSE) is developed as an application system to verify the model. 2004 urn:nbn:de:gbv:wim2-20111215-2347 10.25643/bauhaus-universitaet.234 Professur Informatik im Bauwesen OPUS4-207 Wissenschaftlicher Artikel Weise, Matthias; Katranuschkov, Peter; Scherer, Raimar J. Generic Services for the Support of Evolving Building Model Data Many problems related to data integration in AEC can be better tackled by an approach that takes into account the heterogeneity of tasks, models and applications but does not require continuous consistency of the evolving design data, at each data management operation. Such an approach must incorporate adequate services that can facilitate reintegration of concurrently modified data at reasonably selected coordination points. In this paper we present a set of methods which, used in combination, can achieve that goal. After a description of the principal envisaged cooperative work scenario each of these methods is discussed in detail and current observations drawn from their software realisation are given. Whilst the suggested approach is valid for any EXPRESS-based data model, the practical focus of work has been on facilitating IFC-driven integration. 2004 urn:nbn:de:gbv:wim2-20111215-2077 10.25643/bauhaus-universitaet.207 Professur Informatik im Bauwesen OPUS4-233 Wissenschaftlicher Artikel Staub-French, Sheryl Feature-based Product Modeling for Building Construction Current building product models explicitly represent components, attributes of components, and relationships between components. These designer-focused product models, however, do not represent many of the design conditions that are important for construction, such as component similarity, uniformity, and penetrations. Current design and construction tools offer limited support for detecting these construction-specific design conditions. This paper describes the ontology we developed using the manufacturing concept of features to represent the design conditions that are important for construction. The feature ontology provides the blueprint for the additions and changes needed to transform a standard product model into a constructionspecific product model. The ontology formalizes three classes of features, defines the attributes and functions of each feature type, and represents the relationships between features explicitly. The descriptive semantics of the ontology allows practitioners to represent their varied preferences for naming features, specifying features that result from component intersections and the similarity of components, and grouping features that affect a specific construction domain. A software prototype that implements the ontology enables practitioners to transform designer-focused product models into feature-based product models that represent the construction perspective. 2004 urn:nbn:de:gbv:wim2-20111215-2331 10.25643/bauhaus-universitaet.233 Professur Informatik im Bauwesen OPUS4-232 Wissenschaftlicher Artikel Bargstädt, Hans-Joachim; Blickling, Arno Effective cost estimate and construction processes with 3D interactive technologies: Towards a virtual world of construction sites The development of 3D technologies during the last decades in many different areas, leads us towards the complete 3D representation of planet earth on a high level of detail. On the lowest level we have geographical information systems (GIS) representing the outer layer of our planet as a 3D model. In the meantime these systems do not only give a geographical model but also present additional information like ownership, infrastructure and others that might be of interest for the construction business. In future these systems will serve as basis for virtual environments for planning and simulation of construction sites. In addition to this work is done on the integration of GIS systems with 3D city models in the area of urban planning and thus integration of different levels of detail. This article presents research work on the use of 3D models in construction on the next level of detail below the level of urban planning. The 3D city model is taken as basis for the 3D model of the construction site. In this virtual nD-world a contractor can organize and plan his resources, simulate different variants of construction processes and thus find out the most effective solution for the consideration of costs and time. On the basis of former researches the authors present a new approach for cost estimation and simulation using development technologies from game software. 2004 urn:nbn:de:gbv:wim2-20111215-2320 10.25643/bauhaus-universitaet.232 Professur Baubetrieb und Bauverfahren OPUS4-140 Dissertation Thurow, Torsten Digitaler Architekturbestand - Untersuchungen zur computergestützten, schrittweisen Erfassung und Abbildung der Geometrie von Gebäuden im Kontext der planungsrelevanten Bauaufnahme Die Arbeit beschreibt ein Konzept zur computergestützten, schrittweisen Erfassung und Abbildung der Geometrie von Gebäuden im Kontext der planungsrelevanten Bauaufnahme. Zunächst wird die Bauaufnahme als Erstellung eines verwendungsspezifischen Modells betrachtet. Anschließend wird der Fokus auf das geometrische Abbild gelegt. Es werden u.a. die Aufmaßtechniken Handaufmaß, Tachymetrie und Photogrammetrie bewertet und gebäudetypische geometrische Abstraktionen aufgelistet. Danach erfolgt eine Aufstellung von Anforderungen an ein computergestütztes Aufmaßsystem, welche mit kommerziellen Lösungen aus dem nichtgeodätischen Bereich verglichen wird. Im Hauptteil wird das zu Beginn genannte Konzept beschrieben. Betrachtet wird die skizzenbasierte Erstellung eines nichtmaßlichen geometrischen Abbildes des Gebäudes in den Frühphasen der Bauaufnahme, seine anschließende schrittweise maßliche Anpassung an das Original und topologische Detaillierung im Zuge des Bauaufmaßes, sowie die Extraktion von Bauteilen und ihren geometrischen Parametern. Zur Vereinfachung der maßlichen Anpassung des geometrischen Abbildes im Aufmaßprozeß werden geometrische Abstraktionen wie Parallelitäten, rechte Winkel usw. genutzt, aber nicht erzwungen. Mit Hilfe der Ausgleichungsrechnung erfolgt eine Zusammenführung der geometrischen Abstraktionen und verschiedener Aufmaßtechniken. Es werden die nötigen Beobachtungsgleichungen und andere relevante Aspekte beschrieben. Gezeigt wird weiter ein Konzept, wie ein nutzerseitig veränderbares Bauwerksmodell mit dem geometrischen Abbild in Bezug gebracht werden kann, wobei aus dem geometrischen Abbild geometrische Parameter des nutzerseitig veränderbaren Bauwerkmodells gewonnen werden können. Ausgesuchte Problematiken der Arbeit wurden prototypisch implementiert und getestet. Hierbei stand die Verbindung der Aufmaßtechniken und geometrischen Abstraktionen im Mittelpunkt. Die geometrischen Ansätze der Arbeit beschränken sich auf planare Oberflächen. 2004 urn:nbn:de:gbv:wim2-20041025-1380 10.25643/bauhaus-universitaet.140 Professur Informatik in der Architektur OPUS4-231 Wissenschaftlicher Artikel Kang, Shihchung; Miranda, Eduardo Automated Simulation of the Erection Activities in Virtual Construction The goal of the research is the development of a computer system to plan, simulate and visualize erection processes in construction. In the research construction cranes are treated as robots with predefined degrees of freedom and crane-specific motion planning techniques are developed to generate time-optimized and collision-free paths for each piece to be erected in the project. Using inverse kinematics and structural dynamics simulation, the computer system then computes the crane motions and velocities necessary to achieve the previously calculated paths. The main benefits of the research are the accurate planning and scheduling of crane operations leading to optimization of crane usage and project schedules, as well as improving overall crane safety in the project. This research is aimed at the development of systems that will allow computer-assisted erection of civil infrastructure and ultimately to achieve fully-automated erection processes using robotic cranes... 2004 urn:nbn:de:gbv:wim2-20111215-2310 10.25643/bauhaus-universitaet.231 Professur Informatik im Bauwesen OPUS4-230 Wissenschaftlicher Artikel van Treeck, Christoph; Rank, Ernst Analysis of building structure and topology based on Graph Theory Individual views on a building product of people involved in the design process imply different models for planning and calculation. In order to interpret these geometrical, topological and semantical data of a building model we identify a structural component graph, a graph of room faces, a room graph and a relational object graph as aids and we explain algorithms to derive these relations. The application of the technique presented is demonstrated by the analysis and discretization of a sample model in the scope of building energy simulation. 2004 urn:nbn:de:gbv:wim2-20111215-2308 10.25643/bauhaus-universitaet.230 Professur Informatik im Bauwesen OPUS4-206 Wissenschaftlicher Artikel Huhn, Michael Abstract and Concrete Scenarios in Concurrent Engineering An architecture of a distributed planning system for the building industry has been developed. The emphasis is on highly collaborative environments in steelwork, timber construction etc. where designers concurrently handle 3D models. The overall system connects local design systems by the so-called Design Framework DFW. This framework consists of the definition of distributed components and protocols which make the collaborative design work. The process of collaborative design has been formalized on an abstract level. This paper describes how this has been done. A sample is given to illustrate the mapping of concrete scenarios of the 'real design world' to an abstract scenario level. This work is funded by the Deutsche Forschungsgemeinschaft DFG as part of the project SPP1103 (Meißner et al. 2003). 2004 urn:nbn:de:gbv:wim2-20111215-2068 10.25643/bauhaus-universitaet.206 Professur Informatik im Bauwesen OPUS4-190 Konferenzveröffentlichung Fahrig, Torsten; Nachtwey, Björn; Gellert, Sebastian A Product Model based Approach to Interactive CAE Design Optimization We present a software prototype for fluid flow problems in civil engineering, which combines essential features of Computational Steering approaches with efficient methods for model transfer and high performance computing. The main components of the system are described: - The modeler with a focus on the data management of the product model - The pre-processing and the post-processing toolkit - The simulation kernel based on the Lattice Boltzmann method - The required hardware for real-time computing 2004 urn:nbn:de:gbv:wim2-20111215-1901 10.25643/bauhaus-universitaet.190 Professur Informatik im Bauwesen OPUS4-120 Konferenzveröffentlichung Schapke, Sven-Eric; Scherer, Raimar J. A Four Layer Bayesian Network for Product Model Based Information Mining Business and engineering knowledge in AEC/FM is captured mainly implicitly in project and corporate document repositories. Even with the increasing integration of model-based systems with project information spaces, a large percentage of the information exchange will further on rely on isolated and rather poorly structured text documents. In this paper we propose an approach enabling the use of product model data as a primary source of engineering knowledge to support information externalisation from relevant construction documents, to provide for domain-specific information retrieval, and to help in re-organising and re-contextualising documents in accordance to the user's discipline-specific tasks and information needs. Suggested is a retrieval and mining framework combining methods for analysing text documents, filtering product models and reasoning on Bayesian networks to explicitly represent the content of text repositories in personalisable semantic content networks. We describe the proposed basic network that can be realised on short-term using minimal product model information as well as various extensions towards a full-fledged added value integration of document-based and model-based information. 2004 urn:nbn:de:gbv:wim2-20111215-1207 10.25643/bauhaus-universitaet.120 Professur Informatik im Bauwesen OPUS4-204 Wissenschaftlicher Artikel Beer, Daniel G.; Firmenich, Berthold; Richter, Torsten A Concept for CAD Systems with Persistent Versioned Data Models The synchronous distributed processing of common source code in the software development process is supported by well proven methods. The planning process has similarities with the software development process. However, there are no consistent and similarly successful methods for applications in construction projects. A new approach is proposed in this contribution. 2004 urn:nbn:de:gbv:wim2-20111215-2046 10.25643/bauhaus-universitaet.204 Professur Informatik im Bauwesen