Cumincad : CUMINCAD Papers : Search Results

CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id	groot_ddssar0221
id	groot_ddssar0221
authors	De Groot, E.H.
year	1999
title	Integrated Lighting System Assistant
source	Eindhoven University of Technology
summary	The aim of the design project described in this thesis is to design a tool to support the building design process. Developing a design is considered to be a wicked problem because it goes beyond reasonable or predictable limits. Consequently, in this design project we address two wicked problems simultaneously: a double wicked problem. The two wicked problems concerned are the design of Design Decision Support System [DDSS] and the conceptual design of office lighting systems. To get a handle on the first wicked problem, two workshops were organised to meet the possible future users and to create a common basis for the tool to be developed. To tackle the wickedness of the second problem, an office lighting model and performance evaluation method were developed and implemented in a new prototype computer system: Integrated Lighting System Assistant [ILSA]. The workshops have proven to be a good source of feedback and an essential link to daily practice. The ILSA prototype shows that it is possible to implement the lighting model and evaluation method into a working prototype that can support architects in making decisions for the early design stage in the field of integrating daylight and artificial lighting.
series	thesis:PhD
more	http://www.bwk.tue.nl/fago/AIO/ellie/
last changed	2003/12/16 07:16

_id	cf2011_p109
id	cf2011_p109
authors	Abdelmohsen, Sherif; Lee Jinkook, Eastman Chuck
year	2011
title	Automated Cost Analysis of Concept Design BIM Models
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 403-418.
summary	AUTOMATED COST ANALYSIS OF CONCEPT DESIGN BIM MODELS Interoperability: BIM models and cost models This paper introduces the automated cost analysis developed for the General Services Administration (GSA) and the analysis results of a case study involving a concept design courthouse BIM model. The purpose of this study is to investigate interoperability issues related to integrating design and analysis tools; specifically BIM models and cost models. Previous efforts to generate cost estimates from BIM models have focused on developing two necessary but disjoint processes: 1) extracting accurate quantity take off data from BIM models, and 2) manipulating cost analysis results to provide informative feedback. Some recent efforts involve developing detailed definitions, enhanced IFC-based formats and in-house standards for assemblies that encompass building models (e.g. US Corps of Engineers). Some commercial applications enhance the level of detail associated to BIM objects with assembly descriptions to produce lightweight BIM models that can be used by different applications for various purposes (e.g. Autodesk for design review, Navisworks for scheduling, Innovaya for visual estimating, etc.). This study suggests the integration of design and analysis tools by means of managing all building data in one shared repository accessible to multiple domains in the AEC industry (Eastman, 1999; Eastman et al., 2008; authors, 2010). Our approach aims at providing an integrated platform that incorporates a quantity take off extraction method from IFC models, a cost analysis model, and a comprehensive cost reporting scheme, using the Solibri Model Checker (SMC) development environment. Approach As part of the effort to improve the performance of federal buildings, GSA evaluates concept design alternatives based on their compliance with specific requirements, including cost analysis. Two basic challenges emerge in the process of automating cost analysis for BIM models: 1) At this early concept design stage, only minimal information is available to produce a reliable analysis, such as space names and areas, and building gross area, 2) design alternatives share a lot of programmatic requirements such as location, functional spaces and other data. It is thus crucial to integrate other factors that contribute to substantial cost differences such as perimeter, and exterior wall and roof areas. These are extracted from BIM models using IFC data and input through XML into the Parametric Cost Engineering System (PACES, 2010) software to generate cost analysis reports. PACES uses this limited dataset at a conceptual stage and RSMeans (2010) data to infer cost assemblies at different levels of detail. Functionalities Cost model import module The cost model import module has three main functionalities: generating the input dataset necessary for the cost model, performing a semantic mapping between building type specific names and name aggregation structures in PACES known as functional space areas (FSAs), and managing cost data external to the BIM model, such as location and construction duration. The module computes building data such as footprint, gross area, perimeter, external wall and roof area and building space areas. This data is generated through SMC in the form of an XML file and imported into PACES. Reporting module The reporting module uses the cost report generated by PACES to develop a comprehensive report in the form of an excel spreadsheet. This report consists of a systems-elemental estimate that shows the main systems of the building in terms of UniFormat categories, escalation, markups, overhead and conditions, a UniFormat Level III report, and a cost breakdown that provides a summary of material, equipment, labor and total costs. Building parameters are integrated in the report to provide insight on the variations among design alternatives.
keywords	building information modeling, interoperability, cost analysis, IFC
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	f500
authors	Almeida Sampaio, A.
year	1999
title	Automation of Deck Bridge Representations
source	AVOCAAD Second International Conference [AVOCAAD Conference Proceedings / ISBN 90-76101-02-07] Brussels (Belgium) 8-10 April 1999, pp. 69-79
summary	The bridge deck has a apparent simple shape, but it is the result of an adequate combination of two longitudinal geometric components: the deck shape evolution along de longitudinal section the layout of the road, that acts in simultaneous over a cross section, defining the deck exact shape. A geometric modelling computer programme was developed for box girder decks, allowing the generation of cross sections along the deck, defined with correct shape and location. In the elaboration of the deck plan drawings, the geometric information of the real deck shape is required. This information is not managed in an integrated and automatic way. On the creation of these drawings, directly executed over a graphic system, the time consumed is considerable and it is easy to comet errors. This paper describes the drawing module included in the computer program refereed. The deck plan projections are obtained, in DXF format drawing files, using the geometric information obtained from 3D-deck model. Using the drawing module it is possible to generate the usual deck drawings required in bridge design process. Then, his module is a great support for the design process within its geometric design stage.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	b73a
authors	Angelo,C.V., Bins Ely, V.H.M., Bueno,A.P., Ludvig C. and Trezub, D.
year	1999
title	Space Syntax and the New Transportation System in the Santa Catarina Island
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 434-437
summary	The paper reports an on-going research that aims at describing and analysing some of the syntactic characteristics of the urban space of Santa Catarina Island, in an attempt to evaluate its performance, more specifically its social and spatial integration and segregation. The research has been conducted with the aid of the Aximagic software, still in exam stage and not yet released to the public, a tool being developed by a group of researches of the Rio Grande do Sul Federal University and given up by Prof. Doctor Benamy Turkienicz. The software is part of a larger georeferenced program called CityZoom wich includes others tools to the comprehention of the urban morphology. This program works with graphic pictures in the inlet of data and also in the acquisition of results. The syntactic study of the Santa Catarina Island as a whole aims to obtain the comprehension of its global structure, relating it to the integrated public transportation system proposed to Florianópolis. These studies should allow an understanding of the impact the developments will have upon the urban morphology, and the new public transportation system.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	ga9924
id	ga9924
authors	Cardalda, Juan Jesus Romero J.J.
year	1999
title	Artificial Music Composer
source	International Conference on Generative Art
summary	Traditional Musical Computation Systems had to face the differences between the computational techniques and the characteristics of musical creation. Characteristics such as a high degree of subjectivity, a great irrational component, and a learning process based on the use of examples and environmental absorption, have made music difficult to be formalized through algorithmic methods or classical Artificial Intelligence methods such as Expert Systems. We propose the creation of a cybernetic model of a human composer in a primeval stage of human musical evolution, following a paradigm of cognitive complex models creation, based on the use of the human reference, not only in a static point of view but also considering its evolution through time. Therefore, the proposed system simulates musical creation in one of the first stages of musical evolution, whose main characteristics are the percussive and choral aspects. The system is based on Genetic Algorithms, whose genetic population is integrated by several tribes. This model carries out the task of musical composition, led by the user who expresses his/her musical taste assigning a punctuation to each tribe. The GA selects the worse tribes as individuals to be eliminated. In order to select those tribes which are going to be used as parents, a random function is used, having each tribe a probality proportional to its punctuation. The new tribe is produced by crossing the parent tribes in each individual. Afterwards, mutation takes place in the created individuals. The experiments carried out with this system have proved its functionality in the composition of rhythmic patterns. It is intended to enlarge the experiment's scope by communicating the system via Internet. This would enable its use by users of different musical cultures, taking into account that the system is user-friendly, since it requires no musical knowledge.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	2690
authors	Chiu, Mao-Lin
year	1999
title	Design Navigation and Construction Simulation by Virtual Reality
source	CAADRIA '99 [Proceedings of The Fourth Conference on Computer Aided Architectural Design Research in Asia / ISBN 7-5439-1233-3] Shanghai (China) 5-7 May 1999, pp. 31-41
doi	https://doi.org/10.52842/conf.caadria.1999.031
summary	This paper depicts the approach of constructing a virtual reality environment for simulating architectural design and construction operations. The virtual environment is established to demonstrate the spatial performance of design and constructability of construction operations. Particularly, the functions such as navigation of construction sites, simulation of construction operations, and evaluation of construction details will be critical to construction operations. The system shell is implemented by JAVA on the web and integrated with VRML for supporting the above functions. The study focuses on the needs for the system integration and interface design. Four modes of human computer interfaces are proposed, including the user, agent, monitor, and immersion modes. Finally, this paper provides demonstration of construction simulation in an office building project to highlight the above discussion. The operations of crane towers and curtain wall installation are also studied in the construction process. In conclusion, this paper demonstrates the potential uses and limitation of virtual reality in simulation of the built environment.
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	9cab
authors	Coomans, M.K.D.
year	1999
title	A Virtual Reality User Interface for a Design Information System, CCAI: the Journal for the Integrated Study of Artificial Intelligence
source	Cognitive Science and Applied Epistemology, Rijks Universiteit Gent
summary	The computer is a tool, a complex artefact that is used to extend our reach. A computer system can provide several kinds of services, but against these services stands a supplementary task that the user must deal with: the communication with the computer system. We argued that Virtual Reality (VR) can fundamentally improve the user interface by rendering on the common experiential skills of all users. We present the theoretical basis for this, referring to Donald Norman's theory. We show that VR provides at least theoretically, the means to take a big step in the direction of an ideal user interface. As an example of a innovative application of VR in user interface design, we presented the VR-DIS system; an interdisciplinary design system for the building and construction industry. We discuss the issues underlying the design of its VR interface.
series	other
last changed	2003/04/23 15:50

_id	2524
authors	Corrao, R. and Fulantelli, G.
year	1999
title	The Web to Support Creative Design in Architecture
source	AVOCAAD Second International Conference [AVOCAAD Conference Proceedings / ISBN 90-76101-02-07] Brussels (Belgium) 8-10 April 1999, pp. 275-283
summary	The use of the web in a didactic context appears to be extremely meaningful and effective. In Architecture, the web has huge potential: among others, it has the ability to gather an enormous amount of information, and the ability to create an active learning environment, one which affords the learner opportunities to engage and think. The paper reports on a Web Based Instruction (WBI) system developed at the Italian National Research Council -Institute for Educational and Training Technologies- to support design activities for students of the Italian Faculty of Architecture and Civil Engineering. Original features of the system allow students to study and design in an effective way. Specifically, a particular set of "virtual stationery items" has been implemented and integrated in the system to help students, enrolled on on-line courses, to mimic important traditional study activities, still gaining all the advantages of using the Web. These tools are integrated with communication tools in the same learning environment. A very important feature of the WBI system is that authorised users can enrich the information network in the system, by adding new pages and new links. In the paper we report on the structure of the system, with particular focus on the information domain. Some of the "working tools" which allow users to simulate traditional study activities and the hypertext extension mechanism are also described.
series	AVOCAAD
last changed	2005/09/09 10:48

_id	7082
authors	Dawood, N.
year	1999
title	A proposed system for integrating design and production in the precast building industry
source	The Int. Journal of Construction IT 7(1), pp. 72-83
summary	The UK construction industry is going through a major re-appraisal, with the objective of reducing construction costs by at least 30% by the end of the millennium. Precast and off-site construction are set to play a major role in improving construction productivity, reducing costs and improving working conditions. In a survey of current practices in the prefabrication industry, it was concluded that the industry is far behind other manufacturing-based industries in terms of the utilisation of IT in production planning and scheduling and other technical and managerial operations. It is suggested that a systematic, integrated, computer-aided, approach to presenting and processing information is needed. The objective of this paper is to introduce and discuss the specifications of an integrated intelligent computer-based information system for the precast concrete industry. The system should facilitate: the integration of design and manufacturing operations; automatic generation of production schedules directly from design data and factory attributes; and generation of erection schedules from site information, factory attributes and design data. It is hypothesised that the introduction of such a system would reduce the total cost of precasting by 10% and encourage clients to choose precast components more often.
series	journal paper
last changed	2003/05/15 21:45

_id	7c87
authors	Mahdavi, A., Ilal, M.E. Mathew, O., Ries, R. and Suter, G.
year	1999
title	Aspects of S2
source	Proceedings of the Eighth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-8536-5] Atlanta, 7-8 June 1999, pp. 185-196
summary	We present in this paper the essential aspects of the S2 system. This is the internet realization of SEMPER, an active, multi-domain, space-based, object oriented design environment for integrated building performance modeling. The key features of the S2 environment are as follows: A user can access the system regardless of the computer hardware, operating system or the location on a network; geographically distributed users can asynchronously generate a building model through the user interface; this building model can then be simultaneously evaluated with multiple simulation applications running on remote simulation servers; persistent storage is provided for project data and evaluation results; designers using the system have access to multiple libraries that contain building information such as material data, construction types, schedules, and weather data.
keywords	Building Performance Simulation, Distributed System, Internet
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	6810
authors	Makkonen, Petri
year	1999
title	On multi body systems simulation in product design
source	KTH Stockholm
summary	The aim of this thesis is to provide a basis for efficient modelling and software use in simulation driven product development. The capabilities of modern commercial computer software for design are analysed experimentally and qualitatively. An integrated simulation model for design of mechanical systems, based on four different "simulation views" is proposed: An integrated CAE (Computer Aided Engineering) model using Solid Geometry (CAD), Finite Element Modelling (FEM), Multi Body Systems Modelling (MBS) and Dynamic System Simulation utilising Block System Modelling tools is presented. A theoretical design process model for simulation driven design based on the theory of product chromosome is introduced. This thesis comprises a summary and six papers. Paper A presents the general framework and a distributed model for simulation based on CAD, FEM, MBS and Block Systems modelling. Paper B outlines a framework to integrate all these models into MBS simulation for performance prediction and optimisation of mechanical systems, using a modular approach. This methodology has been applied to design of industrial robots of parallel robot type. During the development process, from concept design to detail design, models have been refined from kinematic to dynamic and to elastodynamic models, finally including joint backlash. A method for analysing the kinematic Jacobian by using MBS simulation is presented. Motor torque requirements are studied by varying major robot geometry parameters, in dimensionless form for generality. The robot TCP (Tool Center Point) path in time space, predicted from elastodynamic model simulations, has been transformed to the frequency space by Fourier analysis. By comparison of this result with linear (modal) eigen frequency analysis from the elastodynamic MBS model, internal model validation is obtained. Paper C presents a study of joint backlash. An impact model for joint clearance, utilised in paper B, has been developed and compared to a simplified spring-damper model. The impact model was found to predict contact loss over a wider range of rotational speed than the spring-damper model. Increased joint bearing stiffness was found to widen the speed region of chaotic behaviour, due to loss of contact, while increased damping will reduce the chaotic range. The impact model was found to have stable under- and overcritical speed ranges, around the loss of contact region. The undercritical limit depends on the gravitational load on the clearance joint. Papers D and E give examples of the distributed simulation model approach proposed in paper A. Paper D presents simulation and optimisation of linear servo drives for a 3-axis gantry robot, using block systems modelling. The specified kinematic behaviour is simulated with multi body modelling, while drive systems and control system are modelled using a block system model for each drive. The block system model has been used for optimisation of the transmission and motor selection. Paper E presents an approach for re-using CAD geometry for multi body modelling of a rock drilling rig boom. Paper F presents synthesis methods for mechanical systems. Joint and part number synthesis is performed using the Grübler and Euler equations. The synthesis is continued by applying the theory of generative grammar, from which the grammatical rules of planar mechanisms have been formulated. An example of topological synthesis of mechanisms utilising this grammar is presented. Finally, dimensional synthesis of the mechanism is carried out by utilising non-linear programming with addition of a penalty function to avoid singularities.
keywords	Simulation; Optimisation; Control Systems; Computer Aided Engineering; Multi Body Systems; Finite Element Method; Backslash; Clearance; Industrial Robots; Parallel Robots
series	thesis:PhD
last changed	2003/02/12 22:37

_id	d8df
authors	Naticchia, Berardo
year	1999
title	Physical Knowledge in Patterns: Bayesian Network Models for Preliminary Design
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 611-619
doi	https://doi.org/10.52842/conf.ecaade.1999.611
summary	Computer applications in design have pursued two main development directions: analytical modelling and information technology. The former line has produced a large number of tools for reality simulation (i.e. finite element models), the latter is producing an equally large amount of advances in conceptual design support (i.e. artificial intelligence tools). Nevertheless we can trace rare interactions between computation models related to those different approaches. This lack of integration is the main reason of the difficulty of CAAD application to the preliminary stage of design, where logical and quantitative reasoning are closely related in a process that we often call 'qualitative evaluation'. This paper briefly surveys the current development of qualitative physical models applied in design and propose a general approach for modelling physical behaviour by means of Bayesian network we are employing to develop a tutoring and coaching system for natural ventilation preliminary design of halls, called VENTPad. This tool explores the possibility of modelling the causal mechanism that operate in real systems in order to allow a number of integrated logical and quantitative inference about the fluid-dynamic behaviour of an hall. This application could be an interesting connection tool between logical and analytical procedures in preliminary design aiding, able to help students or unskilled architects, both to guide them through the analysis process of numerical data (i.e. obtained with sophisticate Computational Fluid Dynamics software) or experimental data (i.e. obtained with laboratory test models) and to suggest improvements to the design.
keywords	Qualitative Physical Modelling, Preliminary Design, Bayesian Networks
series	eCAADe
email
last changed	2022/06/07 07:59

_id	a6a6
authors	Peyret, F., Jurasz, J., Carrel, A., Zekri, E. and Gorham, B.
year	2000
title	The Computer Integrated Road Construction project
source	Automation in Construction 9 (5-6) (2000) pp. 447-461
summary	This paper is about the "Computer Integrated Road Construction" (CIRC) project, which is a Brite-EuRam III funded project, lasting 1997–1999, aiming at introducing a new generation of control and monitoring tools for road pavements construction. These new tools are designed to bring on the sites significant improvements by creating a digital link between design office and job site. The first part of the paper describes the background of the project, which gathers seven European partners from five different countries, and gives the objectives of the project, in general and for each of the two targeted products: one for the compactors (CIRCOM) and one for the asphalt pavers (CIRPAV). Then, the two prototypes are described, each of them being broken down into three main sub-systems: the ground sub-system (GSS), the on-board sub-system (OB) and the positioning sub-system (POS). The expected benefits for the different users are also presented and quantified. The central part of the paper is devoted to the main technical innovations that have been developed in the frame of the project: universal vector database for road equipment guidance, multi-machine functionalities of CIRCOM and the two positioning systems which are actually the technological keys of the systems. Finally, the state of progress of the developments of the two CIRC products and the first commercial success achieved in parallel are presented.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	9dfa
authors	Ries, R. and Mahdavi, A.
year	1999
title	Environmental Life Cycle Assessment in an Integrated CAD Environment: The Ecologue Approach
source	Proceedings of the Eighth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-8536-5] Atlanta, 7-8 June 1999, pp. 351-363
summary	Construction and operation of buildings is a major cause of resource depletion and environmental pollution. Computational performance evaluation tools could support the decision making process in environmentally responsive building design and play an important role in environmental impact assessment, especially when a life cycle assessment (LCA) approach is used. The building domain, however, presents notable challenges to the application of LCA methods. For comprehensive environmental impact analysis to be realized in a computational support tool for the building design domain, such tools must a) have an analysis method that considers the life cycle of building construction, operation, and decommissioning, b) have a representation that is able to accommodate the data and computability requirements of the analysis method and the analysis tool, and c) be seamlessly integrated within a multi-aspect design analysis environment that can provide data on environmentally relevant building operation criteria. This paper reviews the current state of assessment methods and computational support tools for LCA, and their application to building design. Then, the implementation of an application (ECOLOGUE) for comprehensive computational assessment of environmental impact indicators over the building life cycle is presented. The application is a component in a multi-aspect space-based CAD and evaluation environment (SEMPER). The paper describes the use and typical results of ECOLOGUE system via illustrative examples.
keywords	Life Cycle Assessment, Integrated Computational Environmental Analysis
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	a291
authors	Saboya, Renato and Santiago, Alina
year	1999
title	A Construcao de um Sistema de Informacoes Geograficas para a Lagoa da Conceicao: Possibilidades e Desafios (The Construction of a Geographic Information System for the "Conceicao" Lagoon: Possibilities and Challenges)
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 203-208
summary	This work intends to present the construction process of a Geographic Information System – GIS, for the "Lagoa da Conceição", in Florianópolis city, which aims to map urban uses of this region of the Santa Catarina Island. The focus is placed over the following aspects: 1.) Adopted proceedings to avoid the difficulties placed by lack of actual cartographic data in large scales. This problem common to several Brazilian cities dictated the need of mixing several sources of information to construct a geographical data base; 2.) The analytic results already obtained in the actual investigation stage based on the elaborated thematic maps over urban uses, and more specifically over tourism uses. Deepening of these analysis with inclusion of new data, and its utilization as a tool to verify new territorial interventions are also explored; 3.) The spreading and utilization possibilities of the information generated by system by different social sectors through Intranet and Internet technologies. The use of the technologies open up new perspectives regarding the interaction between these sectors in the use of geografical information, giving way to the construction of an unique data basis which might favored integrated decision making process in diverse filds of knowledge.
keywords	Geographic Information System, Territory Management Support
series	SIGRADI
email
last changed	2016/03/10 09:59

_id	3d23
authors	Sellgren, Ulf
year	1999
title	Simulation-driven Design
source	KTH Stockholm
summary	Efficiency and innovative problem solving are contradictory requirements for productdevelopment (PD), and both requirements must be satisfied in companies that strive to remainor to become competitive. Efficiency is strongly related to ”doing things right”, whereasinnovative problem solving and creativity is focused on ”doing the right things”.Engineering design, which is a sub-process within PD, can be viewed as problem solving or adecision-making process. New technologies in computer science and new software tools openthe way to new approaches for the solution of mechanical problems. Product datamanagement (PDM) technology and tools can enable concurrent engineering (CE) bymanaging the formal product data, the relations between the individual data objects, and theirrelation to the PD process. Many engineering activities deal with the relation betweenbehavior and shape. Modern CAD systems are highly productive tools for conceptembodiment and detailing. The finite element (FE) method is a general tool used to study thephysical behavior of objects with arbitrary shapes. Since a modern CAD technology enablesdesign modification and change, it can support the innovative dimension of engineering aswell as the verification of physical properties and behavior. Concepts and detailed solutionshave traditionally been evaluated and verified with physical testing. Numerical modeling andsimulation is in many cases a far more time efficient method than testing to verify theproperties of an artifact. Numerical modeling can also support the innovative dimension ofproblem solving by enabling parameter studies and observations of real and syntheticbehavior. Simulation-driven design is defined as a design process where decisions related tothe behavior and performance of the artifact are significantly supported by computer-basedproduct modeling and simulation.A framework for product modeling, that is based on a modern CAD system with fullyintegrated FE modeling and simulation functionality provides the engineer with tools capableof supporting a number of engineering steps in all life-cycle phases of a product. Such aconceptual framework, that is based on a moderately coupled approach to integratecommercial PDM, CAD, and FE software, is presented. An object model and a supportingmodular modeling methodology are also presented. Two industrial cases are used to illustratethe possibilities and some of the opportunities given by simulation-driven design with thepresented methodology and framework.
keywords	CAE; FE Method; Metamodel; Object Model; PDM; Physical Behavior, System
series	thesis:PhD
email
last changed	2003/02/12 22:37

_id	7cb1
authors	Stuurstraat, N. and Tolman, F.
year	1999
title	A product modeling approach to building knowledge integration
source	Automation in Construction 8 (3) (1999) pp. 269-275
summary	Knowledge informatics is still playing only a minor role in the design process of buildings and civil engineering efforts, particularly in the inception stage. The primary reason that most knowledge tools are not well integrated into the process is that most tend to be based on stand alone expert system technology. Improving the re-use of existing knowledge is required to increase industry performance. A solution could be a new generation of integrated knowledge systems. One problem that must be addressed is how to cope with the conflicting requirements of each particular subsystem when each is optimized for its own knowledge domain. No optimum solution exists that is able to simultaneously optimize each subsystem for a total solution. This paper discusses an approach to building knowledge integration that attempts to address these shortcomings through the use of combined product model and meta-knowledge approach.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	5de1
authors	Tah, J.H.M., Howes, R. and Losifidis, P.
year	1999
title	Integration of design and construction through shared objects in the CO-CIS project
source	CIDAC, Volume 1 Issue 1 May 1999, pp.
summary	This paper presents an Integrated Building Project Model (IBPM) which provides the basis on which software applications can share objects and shows how integration is achieved at the conceptual level. It is used to develop a pure object-oriented database server which acts as a central object repository, and facilitates the sharing of objects between multiple applications. The IBPM provided the basis for the development of the COllaborative Construction Integrated System (CO-CIS) based on the principles of client/server computing and utilising dynamic common object sharing in real-time between CAD and project management packages. The work demonstrates the capabilities of pure object technologies and should encourage industry to adopt the approach and facilitate the development of the common information standards.
keywords	Object-Oriented Project Modelling, Object-Oriented Databases, Integration, Collaborative Environment, CAD, Project Management
series	journal paper
last changed	2003/05/15 21:23

_id	df52
authors	Tuncer, Bige and Stouffs, Rudi
year	1999
title	Computational Richness in the Representation of Architectural Languages
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 603-610
doi	https://doi.org/10.52842/conf.ecaade.1999.603
summary	An extensive analysis of an architectural object or body leads to a model composed of abstractions, each reflecting on a different aspect. Though separately described through drawings, diagrams, and texts, these abstractions relate in many ways, most commonly through shared components. An integrated model that recognizes these relationships yields more than only the original abstractions. We present a methodology for achieving such a rich representation and touch upon the tools and techniques necessary to implement this methodology. As an application of this methodology, we describe an interactive educational system for the presentation of architectural analyses.
keywords	Architectural Languages, Abstractions, Representational Flexibility, Meta-Language, Presentation
series	eCAADe
email
last changed	2022/06/07 07:57

_id	5f23
authors	Vineeta, Pal
year	1999
title	Integrated Computational Analysis of the Visual Environment in Buildings
source	Carnegie Mellon University, Pittsburgh
summary	Despite significant advances in the area of computational support for lighting design, lighting simulation tools have not been sufficiently integrated into the lighting design process. There is a significant body of designers who rely solely on their individual experience and do not use predictive simulation tools. Even when simulation tools are utilized, it is for design verification or presentation rather than for design support. A number of factors are thought to contribute to this lack of integration of simulation tools into the design process: a) Most existing tools rely on the problematic assumption implying the appropriateness of simplified models for the less complex early design and detailed simulation for the more complex later stages of design; b) They do not support an active exploration of design variables to satisfy desired performance criteria; c) They are not integrated with other building performance simulation models. This thesis addresses the above shortcomings by contributing to the field of visual analysis in the following areas, pertaining to the development of active, integrated design and performance simulation environments: - Implementation of a consistent and coherent, physically-based modeling approach, combining radiosity and ray-tracing methods for the simulation of light propagation. - Provision of design support both in terms of evaluation support for interpreting large amounts of computed data with diverse performance indices, and in terms of active design support to explore the relationships between the design variables and performance indices. - Integration of the lighting simulation module within a larger software environment (SEMPER) for the prediction and evaluation of multiple performance indicators (for energy, light, acoustics, etc.) in buildings.
series	thesis:PhD
last changed	2003/02/12 22:37

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