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	avocaad_2001_22
id	avocaad_2001_22
authors	Jos van Leeuwen, Joran Jessurun
year	2001
title	XML for Flexibility an Extensibility of Design Information Models
source	AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary	The VR-DIS research programme aims at the development of a Virtual Reality – Design Information System. This is a design and decision support system for collaborative design that provides a VR interface for the interaction with both the geometric representation of a design and the non-geometric information concerning the design throughout the design process. The major part of the research programme focuses on early stages of design. The programme is carried out by a large number of researchers from a variety of disciplines in the domain of construction and architecture, including architectural design, building physics, structural design, construction management, etc.Management of design information is at the core of this design and decision support system. Much effort in the development of the system has been and still is dedicated to the underlying theory for information management and its implementation in an Application Programming Interface (API) that the various modules of the system use. The theory is based on a so-called Feature-based modelling approach and is described in the PhD thesis by [first author, 1999] and in [first author et al., 2000a]. This information modelling approach provides three major capabilities: (1) it allows for extensibility of conceptual schemas, which is used to enable a designer to define new typologies to model with; (2) it supports sharing of conceptual schemas, called type-libraries; and (3) it provides a high level of flexibility that offers the designer the opportunity to easily reuse design information and to model information constructs that are not foreseen in any existing typologies. The latter aspect involves the capability to expand information entities in a model with relationships and properties that are not typologically defined but applicable to a particular design situation only; this helps the designer to represent the actual design concepts more accurately.The functional design of the information modelling system is based on a three-layered framework. In the bottom layer, the actual design data is stored in so-called Feature Instances. The middle layer defines the typologies of these instances in so-called Feature Types. The top layer is called the meta-layer because it provides the class definitions for both the Types layer and the Instances layer; both Feature Types and Feature Instances are objects of the classes defined in the top layer. This top layer ensures that types can be defined on the fly and that instances can be created from these types, as well as expanded with non-typological properties and relationships while still conforming to the information structures laid out in the meta-layer.The VR-DIS system consists of a growing number of modules for different kinds of functionality in relation with the design task. These modules access the design information through the API that implements the meta-layer of the framework. This API has previously been implemented using an Object-Oriented Database (OODB), but this implementation had a number of disadvantages. The dependency of the OODB, a commercial software library, was considered the most problematic. Not only are licenses of the OODB library rather expensive, also the fact that this library is not common technology that can easily be shared among a wide range of applications, including existing applications, reduces its suitability for a system with the aforementioned specifications. In addition, the OODB approach required a relatively large effort to implement the desired functionality. It lacked adequate support to generate unique identifications for worldwide information sources that were understandable for human interpretation. This strongly limited the capabilities of the system to share conceptual schemas.The approach that is currently being implemented for the core of the VR-DIS system is based on eXtensible Markup Language (XML). Rather than implementing the meta-layer of the framework into classes of Feature Types and Feature Instances, this level of meta-definitions is provided in a document type definition (DTD). The DTD is complemented with a set of rules that are implemented into a parser API, based on the Document Object Model (DOM). The advantages of the XML approach for the modelling framework are immediate. Type-libraries distributed through Internet are now supported through the mechanisms of namespaces and XLink. The implementation of the API is no longer dependent of a particular database system. This provides much more flexibility in the implementation of the various modules of the VR-DIS system. Being based on the (supposed to become) standard of XML the implementation is much more versatile in its future usage, specifically in a distributed, Internet-based environment.These immediate advantages of the XML approach opened the door to a wide range of applications that are and will be developed on top of the VR-DIS core. Examples of these are the VR-based 3D sketching module [VR-DIS ref., 2000]; the VR-based information-modelling tool that allows the management and manipulation of information models for design in a VR environment [VR-DIS ref., 2000]; and a design-knowledge capturing module that is now under development [first author et al., 2000a and 2000b]. The latter module aims to assist the designer in the recognition and utilisation of existing and new typologies in a design situation. The replacement of the OODB implementation of the API by the XML implementation enables these modules to use distributed Feature databases through Internet, without many changes to their own code, and without the loss of the flexibility and extensibility of conceptual schemas that are implemented as part of the API. Research in the near future will result in Internet-based applications that support designers in the utilisation of distributed libraries of product-information, design-knowledge, case-bases, etc.The paper roughly follows the outline of the abstract, starting with an introduction to the VR-DIS project, its objectives, and the developed theory of the Feature-modelling framework that forms the core of it. It briefly discusses the necessity of schema evolution, flexibility and extensibility of conceptual schemas, and how these capabilities have been addressed in the framework. The major part of the paper describes how the previously mentioned aspects of the framework are implemented in the XML-based approach, providing details on the so-called meta-layer, its definition in the DTD, and the parser rules that complement it. The impact of the XML approach on the functionality of the VR-DIS modules and the system as a whole is demonstrated by a discussion of these modules and scenarios of their usage for design tasks. The paper is concluded with an overview of future work on the sharing of Internet-based design information and design knowledge.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	13b3
authors	Van Leeuwen, Jos P. and Jessurun, A.J.
year	2001
title	XML for flexibility and extensibility of design information models
source	CAADRIA 2001 [Proceedings of the Sixth Conference on Computer Aided Architectural Design Research in Asia / ISBN 1-86487-096-6] Sydney 19-21 April 2001, pp. 491-501
doi	https://doi.org/10.52842/conf.caadria.2001.491
summary	This paper reports on a research project that aims to develop a design support system for early design stages. The dynamic way of handling information during early design imposes special requirements on the information modelling approach for which XML-Schema appears to provide promising solutions. The paper discusses the XML-Schema implementation of the so-called Feature-Based Modelling framework.
series	CAADRIA
email
last changed	2022/06/07 07:58

_id	e7e7
authors	Popova, M., Johansson, P. and Lindgren, H.
year	2001
title	Case-based Reasoning in Collaborative Design: The role of product models and information structures
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 92-97
doi	https://doi.org/10.52842/conf.ecaade.2001.092
summary	This paper discusses methods for information management through the rational application of IT within collaborative design. We explore the possible integration of the platforms of case-based reasoning and information structures. We examine the potential combination of existing techniques (CAD-tools, word processors, general applications, WWW) and standards (IFC, national classification systems) into a system for information management. We focus on the designers’ use of heterogeneous information and the further development of a prototype based on product-model and process-model technology. Today, XML helps us structure various kinds of information before the system performs case-based reasoning sessions. The aim is to promote efficient and flexible information management in a casebased design process. Through the use of standardized product models, this information will be sharable and suitable for reuse and feedback. The more often the information is reused, the more general and adaptable it becomes i.e. it evolves. This scenario requires, though, efficient information management in the design office: a quality system for evaluating the information for reuse, consequent use of standardized product models and IT.
keywords	Case-Based Reasoning, Product Models, Information Structures, Collaborative Design And Construction Process
series	eCAADe
last changed	2022/06/07 08:00

_id	9df9
authors	Tunçer, B., Stouffs, R. and Sariyildiz, S.
year	2001
title	Rich Information Structures
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 30-35
doi	https://doi.org/10.52842/conf.ecaade.2001.030
summary	Technological advances enable and encourage practitioners and students to make the design process more information intensive. This information intensity raises questions of complexity: how to organize and intra-relate large amounts of information in order to facilitate efficient retrieval of this information. This involves issues of both modeling and visualizing this complexity in design presentations and project documentation facilities. We propose a methodology for constructing a rich information structure which offers new possibilities for accessing, viewing, and interpreting this information. Hereto, we present two techniques: a decomposition of documents by content, and the separation of syntax and semantics. We then discuss the effects of both techniques on issues of flexibility, extensibility, and ease of use in constructing a rich information structure. We finally describe an exemplary application we are developing that combines the proposed methodology and techniques for the purpose of presenting architectural analyses.
keywords	Information Structure, Information Modeling, Extensibility, Flexibility, Ease Of Use
series	eCAADe
email
last changed	2022/06/07 07:57

_id	cd47
authors	Park, Hyeonsoo
year	2001
title	Distributed Representation of an Architectural Model
source	Harvard University
summary	This thesis proposes a new strategy for design representation that uses dynamically decentralized design objects, distributed over the web and instantiated just-in-time, instead of the traditional centralized, static and local CAD model. It addresses the problem of coping with dynamic information changes that architects face when designing with increasingly time-sensitive product information from multiple suppliers. The dissertation describes the new distributed architecture for design representation, and outlines a corresponding new process model to address the needs of AEC (Architectural, Engineering and Construction) industries' architectural designers during design and procurement phases. The feasibility of the process was tested in a prototype system that combines existing state-of-the-art technologies. The prototype integrates the direct manipulation functionality of Autodesk's i-Drop technology with the Internet communication protocols HTTP and TCP/IP, and a VBA macro running from within AutoCAD 2000i. In the proposed model, libraries of AEC objects, representing suppliers' products, are located in multiple suppliers' databases and are made available to CAD designers remotely over the Web. Suppliers using the system are expected to produce product information as XML documents. This standardizes the interface with the remote designers.
keywords	Architecture; Design and Decorative Arts; Agriculture; Wood Technology
series	thesis:PhD
last changed	2003/02/12 22:37

_id	48ea
authors	Tunçer, B., Stouffs, R. and Sariyildiz, S.
year	2001
title	Representation of architectural analyses. Two prototype applications
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 495-505
summary	We present a methodology for decomposing documents by content and integrating these into a rich information structure. This implies both expanding the document structure, replacing document entities by detailed substructures, and augmenting the structure’s relatedness with content information. This paper focuses on some of the representational issues involved in the process of interpreting, breaking up, and relating documents. We describe a prototype application as a tool for building up, storing, and presenting architectural analyses in an educational setting implemented using XML, discuss a similar prototype application to be implemented using sorts, and compare these two different methodologies.
keywords	Representations, Architectural Analyses, Information Structures
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	avocaad_2001_13
id	avocaad_2001_13
authors	Alexander Koutamanis
year	2001
title	Modeling irregular and complex forms
source	AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary	Computational technologies provide arguably the first real opportunity architectural design has had for a comprehensive description of built form. With the advent of affordable computer-aided design systems (including drafting, modeling, visualization and simulation tools), architects believe they can be in full control of geometric aspects and, through these, of a wide spectrum of other aspects that are implicit or explicit in the geometric representation. This belief is based primarily on the efficiency and effectiveness of computer systems, ranging from the richness and adaptability of geometric primitives to the utility of geometric representations in simulations of climatic aspects. Such capabilities support attempts to design and construct more irregular or otherwise complex forms. These fall under two main categories: (1) parsing of irregularity into elementary components, and (2) correlation of the form of a building with complex geometric structures.The first category takes advantage of the compactness and flexibility of computational representations in order to analyse the form of a design into basic elements, usually elementary geometric primitives. These are either arranged into simple, unconstrained configurations or related to each other by relationships that define e.g. parametric relative positioning or Boolean combinations. In both cases the result is a reduction of local complexity and an increase of implicit or explicit relationships, including the possibility of hierarchical structures.The second category attempts to correlate built form with constraints that derive usually from construction but can also be morphological. The correlation determines the applicability of complex geometric structures (minimally ruled surfaces) to the description of a design. The product of this application is generally variable in quality, depending upon the designer's grounding in geometry and his ability to integrate constraints from different aspects in the definition of the design's geometry.Both categories represent a potential leap forward but are also equally hampered by the rigidity of the implementation mechanisms upon which they rely heavily. The paper proposes an approach to making these mechanisms subordinate to the cognitive and technical aspects of architectural thinking through fuzzy modeling. This way of modeling involves a combination of (a) canonical forms, (b) tolerances around canonical forms and positions, (c) minimal and maximal values, (d) fuzzy boundaries, and (e) plastic interaction between elements based on the dual principles of local intelligence and autonomy. Fuzzy models come therefore closer to the intuitive manners of sketching, while facilitating transition to precise and complex forms. The paper presents two applications of fuzzy modeling. The first concerns the generation of schematic building layouts, including adaptive control of programmatic requirements. The second is a system for designing stairs that can adapt themselves to changes in their immediate environment through a fuzzy definition of geometric and topological parametrization.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	a469
authors	Brown, Andre and Berridge, Phil
year	2001
title	Games One : Two : Three A triangle of virtual game scenarios for architectural collaboration
source	Stellingwerff, Martijn and Verbeke, Johan (Eds.), ACCOLADE - Architecture, Collaboration, Design. Delft University Press (DUP Science) / ISBN 90-407-2216-1 / The Netherlands, pp. 95-120 [Book ordering info: m.c.stellingwerff@bk.tudelft.nl]
summary	This paper is split into three parts, each of which deals with different aspects of, and approaches to, the collaboration process. Each of the approaches shares a common root in an aspect of games or gaming. Together the three approaches represent a tripartite attack on the spectrum of problems that need to be addressed to achieve successful collaboration. The first technique is dealt with in Game One One. This deals with the issue of encouraging collaboration. It is based on work using a role playing game scenario and is intended to allow construction industry professionals and clients to develop a common framework for discussion. It originally existed as a paper based game and is now being tested in a web-based environment. Game Two is based on work that has evolved from contemporary game and meeting place environments that have been attracting attention recently. Here internet-based three-dimensional worlds are used as a virtual replacement of real spaces and participants meet as avatars. In the architectural context we have investigated the potential for application of such 3D worlds as meeting, and discussion places where architectural information and ideas can be exchanged. In Game Three we take the idea that currently, virtual environments are still rather uncomfortable and unnatural in terms of human interaction, and in particular in the way that we move around and display architectural scenes. We develop the idea that games software incorporates techniques that make the representation of animated, interactive 3D architectural environments computationally efficient. We have augmented the software used in games environments and have considered how we construct architectural models and man-machine interfaces to improve the effectiveness of such environments in an architectural context.
series	other
email
last changed	2001/09/14 21:30

_id	b534
authors	Chase, Scott C. and Liew, Paksan
year	2001
title	A Systematic Method for Redesign - Using function, behaviour and structure to facilitate grammar transformation
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 18-24
doi	https://doi.org/10.52842/conf.ecaade.2001.018
summary	We present a formal framework for redesign. Stylistic change, defined by grammar rule modifications, serves as the basis for rule replacement with ones that produce designs satisfying revised requirements. Each grammar rule has an associated description that adds functional or behavioural information to the geometric representation of the design using Function-Behaviour-Structure representations. This method provides a formal mechanism for redesign and defines a means to generate and link structures with different behaviour and functions within the FBS model of design. We demonstrate this with an example of redesign of a wall responding to changing functional requirements, and also discuss its usage in other types of redesign problems.
keywords	Redesign, Design Grammars, Function-Behaviour-Structure Models, Feature Based Design
series	eCAADe
email
last changed	2022/06/07 07:55

_id	avocaad_2001_02
id	avocaad_2001_02
authors	Cheng-Yuan Lin, Yu-Tung Liu
year	2001
title	A digital Procedure of Building Construction: A practical project
source	AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary	In earlier times in which computers have not yet been developed well, there has been some researches regarding representation using conventional media (Gombrich, 1960; Arnheim, 1970). For ancient architects, the design process was described abstractly by text (Hewitt, 1985; Cable, 1983); the process evolved from unselfconscious to conscious ways (Alexander, 1964). Till the appearance of 2D drawings, these drawings could only express abstract visual thinking and visually conceptualized vocabulary (Goldschmidt, 1999). Then with the massive use of physical models in the Renaissance, the form and space of architecture was given better precision (Millon, 1994). Researches continued their attempts to identify the nature of different design tools (Eastman and Fereshe, 1994). Simon (1981) figured out that human increasingly relies on other specialists, computational agents, and materials referred to augment their cognitive abilities. This discourse was verified by recent research on conception of design and the expression using digital technologies (McCullough, 1996; Perez-Gomez and Pelletier, 1997). While other design tools did not change as much as representation (Panofsky, 1991; Koch, 1997), the involvement of computers in conventional architecture design arouses a new design thinking of digital architecture (Liu, 1996; Krawczyk, 1997; Murray, 1997; Wertheim, 1999). The notion of the link between ideas and media is emphasized throughout various fields, such as architectural education (Radford, 2000), Internet, and restoration of historical architecture (Potier et al., 2000). Information technology is also an important tool for civil engineering projects (Choi and Ibbs, 1989). Compared with conventional design media, computers avoid some errors in the process (Zaera, 1997). However, most of the application of computers to construction is restricted to simulations in building process (Halpin, 1990). It is worth studying how to employ computer technology meaningfully to bring significant changes to concept stage during the process of building construction (Madazo, 2000; Dave, 2000) and communication (Haymaker, 2000).In architectural design, concept design was achieved through drawings and models (Mitchell, 1997), while the working drawings and even shop drawings were brewed and communicated through drawings only. However, the most effective method of shaping building elements is to build models by computer (Madrazo, 1999). With the trend of 3D visualization (Johnson and Clayton, 1998) and the difference of designing between the physical environment and virtual environment (Maher et al. 2000), we intend to study the possibilities of using digital models, in addition to drawings, as a critical media in the conceptual stage of building construction process in the near future (just as the critical role that physical models played in early design process in the Renaissance). This research is combined with two practical building projects, following the progress of construction by using digital models and animations to simulate the structural layouts of the projects. We also tried to solve the complicated and even conflicting problems in the detail and piping design process through an easily accessible and precise interface. An attempt was made to delineate the hierarchy of the elements in a single structural and constructional system, and the corresponding relations among the systems. Since building construction is often complicated and even conflicting, precision needed to complete the projects can not be based merely on 2D drawings with some imagination. The purpose of this paper is to describe all the related elements according to precision and correctness, to discuss every possibility of different thinking in design of electric-mechanical engineering, to receive feedback from the construction projects in the real world, and to compare the digital models with conventional drawings.Through the application of this research, the subtle relations between the conventional drawings and digital models can be used in the area of building construction. Moreover, a theoretical model and standard process is proposed by using conventional drawings, digital models and physical buildings. By introducing the intervention of digital media in design process of working drawings and shop drawings, there is an opportune chance to use the digital media as a prominent design tool. This study extends the use of digital model and animation from design process to construction process. However, the entire construction process involves various details and exceptions, which are not discussed in this paper. These limitations should be explored in future studies.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	8a8c
authors	Choi, J.W., Kwon, D.-Y. and Lee, H.-S.
year	2001
title	DesignBUF: Exploring and Extending 2D Boolean Set Operations with Multiple Modes in the Early Design Phase
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 589-602
summary	Boolean set operations have been a powerful design function set for any CAD systems including 2D and 3D domains. Their capacity to provide even more powerful design tools have not, however, been fully explored in the 2D system. The purpose of this study is to further explore 2D Boolean set operations with multiple modes, which include a pick mode, a wait mode, a drag-and-drop mode, and a draw-and-action mode. We develop a prototype design tool, called DesignBUF. It introduces a new concept of “design object buffer,” an intermediate design zone in which a designer freely sketches his/her design with design objects in a brainstorming fashion since valuable design ideas are ephemeral? and the designer needs to generate design schemes rapidly before the ideas disappear or are forgotten. After finishing such fast brainstorming processes, especially in the early design phase, the designer gets a stable and refined form of a floor plan, which in turn becomes a well structured form to maintain building and design information systematically. Therefore, the designer keeps switching back and forth between the “design object buffer” and structured floor plans. We believe that this dual working memory will not only increase system flexibility, but also reduce computation with unnecessarily complex design objects. This study also develops a robust algorithm to transform the intermediate design objects into a well-structured floor plan. In fact, the algorithm is also used for the extended Boolean set operations described above. A structured floor plan can also be transformed into non-structured forms. Research issues for future development are also identified at the end of the paper.
keywords	Design Buffer, Extended Boolean Set Operations, Structured Floor Plan.
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	3320
authors	Cinelis, G., Kazakeviciute, G. and Januskevicius, E.
year	2001
title	Modeling and energy analysis of buildings based on integrated CAD – models in tuition of CAAD
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 138-143
doi	https://doi.org/10.52842/conf.ecaade.2001.138
summary	The first implementation of the system MEA for building spatial and structural modeling and energy analysis using integrated graphical digital models in tuition of architecture students is being described. Working at different design stages and with various types of models the aim was to deliver the understanding of CAD tools as intelligent rather than pure technical ones.
keywords	3D Modeling Of Buildings Integrated Digital Graphical Models, Energy Analysis, Variant Design
series	eCAADe
last changed	2022/06/07 07:52

_id	dfe6
authors	Hendricx, Ann and Neuckermans, Herman
year	2001
title	The Use of Design Cases to Test Architectural Building Models
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 73-78
doi	https://doi.org/10.52842/conf.ecaade.2001.073
summary	The IDEA+ project aims at developing an Integrated Design Environment for Architect designers, in which design tools and computational tests make use of one and the same core building description. Such a description must be apt to describe architecture in a full-fledged way. Hereto, the authors have put the IDEA+ model to the test with actual design cases. These cases have been used to test isolated design concepts and to mimic the global design process.
keywords	Building Model, CAAD, Case, Object-Oriented, Architecture, Architectural Model
series	eCAADe
email
last changed	2022/06/07 07:49

_id	f8e3
authors	Hew, K.-P., Fisher, N. and Awbi, H.B.
year	2001
title	Towards an integrated set of design tools based on a common data format for building and services design
source	Automation in Construction 10 (4) (2001) pp. 459-476
summary	The emerging technology in building product design using knowledge-based engineering (KBE), is currently exciting practitioners in the building construction industry. This paper investigates the use of KBE techniques and assesses the contribution this approach can make to the traditional design process. To do this, the investigation has developed an integrated set of design tools based on a common data format, for integrating 3D electronic prototypes with building services information for use in building design. This approach has been developed on the basis of an open framework and has been applied to the design of an airport terminal building and its plant room. Within the framework, the design process and the information needed, are divided into modules and represented in the form of 3D digital mock-up models (or electronic prototypes). Within the integrated system, an interface has been developed to facilitate the sharing of information with a thermal analysis software application, which contributes to the design process. In this paper, the methodology is discussed and its working system is illustrated and evaluated.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	f1c4
authors	Holmgren, S., Rüdiger, B. and Tournay, B.
year	2001
title	The 3D-City Model – A New Space
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 430-435
doi	https://doi.org/10.52842/conf.ecaade.2001.430
summary	We have worked with the construction and use of 3D city models for about ten years. This work has given us valuable experience concerning model methodology. In addition to this collection of knowledge, our perception of the concept of city models has changed radically. In order to explain this shift in paradigms we begin by describing some of the concrete models we have made, showing the relationship between model structure (methodology and content) and model use. We also describe the projects we are working on at present in order to illustrate new ideas concerning the potential development of 3D city models.
keywords	Digital 3D City Model, Urban Regeneration, Participatory Design, On Line Community
series	eCAADe
email
last changed	2022/06/07 07:50

_id	89ba
authors	Jeng, Taysheng
year	2001
title	Coordination of Distributed Design Activities: A Rule-Driven Approach
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 415-426
summary	The purpose of this work is to develop effective, yet flexible, methods of coordination in support of collaborative design. This work takes a rule-driven approach to modeling process knowledge for coordination of distributed activities. In this paper, coordination knowledge is represented by a set of dependency rules that determines when, how, and by whom each activity is performed. A design coordination model called DCM is introduced in terms of the dependency rules and the activity states associated with the use of the whole range of computer applications. DCM permits coordination flexibility and allows visibility of coordination logic dealing with dynamic aspects of design processes. A web-based system prototype that implements the design coordination model is demonstrated. Opportunities for using the system prototype to aid design coordination are discussed.
keywords	Coordination, Dependency, Design Process Models, Collaborative Design
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	f498
authors	Kobayashi, Yoshihiro
year	2001
title	3D City Modeler with Fuzzy Multiple Layers Perceptron: Application of soft computing in computer aided architectural design systems
source	University of California, Los Angeles
summary	A computer aided design (CAD) system that can store the design knowledge of users is proposed. Specifically, a computer system for generating 3D city models from satellite images is formulated, implemented and tested. Techniques from neural networks, fuzzy systems, image processing, pattern recognition, and machine learning constitute the methodological foundation of the system. The flexibility and usability of system are evaluated.
keywords	Architectural Rendering; Computer Simulation
series	thesis:PhD
email
last changed	2003/02/12 22:37

_id	81b8
authors	Kolarevic, Branko
year	2001
title	Digital Fabrication: Manufacturing Architecture in the Information Age
source	Reinventing the Discourse - How Digital Tools Help Bridge and Transform Research, Education and Practice in Architecture [Proceedings of the Twenty First Annual Conference of the Association for Computer-Aided Design in Architecture / ISBN 1-880250-10-1] Buffalo (New York) 11-14 October 2001, pp. 268-278
doi	https://doi.org/10.52842/conf.acadia.2001.268
summary	This paper addresses the recent digital technological advances in design and fabrication and the unprecedented opportunities they created for architectural design and production practices. It investigates the implications of new digital design and fabrication processes enabled by the use of rapid prototyping (RP) and computer-aided manufacturing (CAM) technologies, which offer the production of small-scale models and full-scale building components directly from 3D digital models. It also addresses the development of repetitive non-standardized building systems through digitally controlled variation and serial differentiation, i.e. mass-customization, in contrast to the industrial-age paradigms of prefabrication and mass production. The paper also examines the implications of the recent developments in the architectural application of the latest digital design and fabrication technologies, which offer alternatives to the established understandings of architectural design and production processes and their material and economic constraints. Such critical examination should lead to a revised understanding of the historic relationship between architecture and its means of production.
keywords	Digital Fabrication, Computer-Aided Manufacturing, Digital Construction
series	ACADIA
email
last changed	2022/06/07 07:51

_id	16dd
authors	Leclercq, Pierre P.
year	2001
title	Programming and Assisted Sketching. Graphic and Parametric Integration in Architectural Design
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 15-31
summary	In this paper, we present our latest research related to the concept of a sketchinterface. After describing our vision of computer assisted design and the conditions necessary for its effective implementation, an original data model is presented, which covers different levels of representation and is grounded in a database of implicit information. We then describe our software prototype, which exploits the potentials of the digital sketch, in order to demonstrate how our ideas are pertinent and the feasibility of three kinds of applications. In particular, we argue in favor of using an architectural software program in relation to the sketch within the same computer assisted environment at an early stage in the design process.
keywords	Design , Architectural Models, Implicit Knowledge Management, Sketch Interface
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	diss_long
id	diss_long
authors	Long, A.
year	2001
title	Quill A Gesture Design Tool for Pen-based User Interfaces
source	U.C. Berkeley
summary	This dissertation describes the motivation, design, and development of a tool for designing gestures for pen-based user interfaces. Pens and other styli have been ubiquitous for recording information for centuries. Recently, pen-based computers have recently become common, especially small devices such as the Palm Pilot. One benefit pens provide in computer interfaces is the ability to draw gestures—marks that invoke commands. Gestures can be intuitive and faster than other methods of invoking commands. However, our research shows that gestures are sometimes misrecognized and hard to remember. We believe these problems are due in part to the difficulty of designing “good” gestures—that is, gestures that are easy to remember and are recognized well—and the lack of tools for helping designers create good gestures. We believe that an improved gesture design tool can help interface designers create good gestures for their applications. Since people confuse similar objects and misremember them, we performed experiments to measure why people perceived gestures as similar. We derived computational metrics for predicting human perception of gesture similarity. Based on the results of our experiments, we developed a gesture design tool, quill. The tool warns designers about gestures that may be hard to remember or recognize, and provides advice about how to improve the gestures. It also provides a convenient way to test recognition of gestures. To evaluate quill, a user study was performed with 10 professional user interface designers and one professional web designer. All designers were able to create gesture sets using quill, but not all designers benefited from quill’s suggestions. More work is needed to make suggestions useful for most designers. The primary contributions of this work are: • Improved understanding of the gesture design process, including the types of problems people encounter when designing gestures. • Computational models for predicting human-perceived gesture similarity. • Confirmation of the importance of good naming for gesture memorability. • An intelligent gesture design tool, quill, which automatically warns designers about potential problems with their gestures and advises them about how to fix these problems. This work also suggests several areas for future work in the areas of gesture design tools and gesture similarity and memorability.
series	thesis:PhD
email
more	http://www-2.cs.cmu.edu/~chrisl/work/pubs/
last changed	2003/09/24 14:54

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