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

PDF papers
References

Hits 1 to 20 of 702

Reformat results as: short short into frame detailed detailed into frame

_id	78f6
authors	Neto de Faria, José
year	2001
title	BICICLETA IDA: DESENVOLVIMENTO VIRTUAL DE BICICLETA URBANA (Bicycle "Ida":Development of an Urban Bicycle)
source	SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 260-261
summary	The project “IDA Bicycle” proposes the virtual study and exploration of the use of digital technologies in the virtual development of an urban bike without the construction of three-dimensional physical models. With the use of graphic platforms and adequate software for each stage of the project it was possible to study new configurations for the object. The new systems of design and simulation of reality makes possible the careful study of aesthetic forms and aerodynamics of the bike. It was also possible to carryout tests that analyzed the structural quality of the object.
series	SIGRADI
email
last changed	2016/03/10 09:56

_id	db60
authors	Af Klercker, J., Achten, H. and Verbeke, J.
year	2001
title	AVOCAAD - A First Step Towards Distance Learning?
doi	https://doi.org/10.52842/conf.ecaade.2001.269
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 269-274
summary	In the industrial world knowledge is developed very fast. As most countries are depending on employees with a high level of knowledge and skills the term ”Life Long Learning” has been formulated and the concept is more and more accepted. Institutions of higher education are more and more involved in creating supplementary education more independent of time and place. Distance learning was originally carried out by ordinary mail, which was slow but might then have been the only solution for people in remote places. With the Internet and e-mail the distance-learning concept has got a far better tool, for instance better interaction facilities. Architects and engineers in practise are deeply involved in solving the problems of the present projects. Education which is independent of time and place must be of great interest to both parties. The AVOCAAD project has created an education model for students to meet the possibilities of CAAD. The education model can be used in a curriculum at a school as well as for distance learning. Among the possible experiences from it, the one concerning distance learning might be the most important future application of the system in architectural education. This paper sketches the pedagogical background and gives examples from other areas of knowledge, where distance learning is already in use. We will put the question how the AVOCAAD concept meets the experiences from distance learning.
keywords	Distance Learning, Pedagogic, CAAD, E-Learning, AVOCAAD
series	eCAADe
email
last changed	2022/06/07 07:54

_id	12e3
authors	Ahmad Rafi, M.E., Che Zulkhairi, A. and Karboulonis, P.
year	2002
title	Interactive Storytelling and Its Role in the Design Process
doi	https://doi.org/10.52842/conf.caadria.2002.151
source	CAADRIA 2002 [Proceedings of the 7th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 983-2473-42-X] Cyberjaya (Malaysia) 18–20 April 2002, pp. 151-158
summary	Projects of ever increasing complexity and size have incited the need for new and robust design methodologies and tools in an effort to manage complexity, lower costs, ascertain quality and reduce risk. Technology convergence through the growing availability of networked computers, rapid progress in Computer Aided Design (CAD) and information management have encouraged the undertaking of even more complex designs that demand high degrees of interaction, collaboration and the efficient sharing and dissemination of information. It is suggested that interactive storytelling and interactive design (Rafi and Karboulonis, 2001) techniques that use non-linear information mapping systems can be deployed to assist users as they navigate information that is structured to address localized needs as they arise. The design process is a collaborative effort that encompasses diverse knowledge disciplines and demands the management and utilization of available resources to satisfy the needs of a single or set of goals. It is thought that building industry specialists should work close together in an organised manner to solve design problems as they emerge and find alternatives when designs fall short. The design process involves the processing of dynamic and complex information, that can be anything from the amount of soil required to level lands - to the needs of specific lightings systems in operation theatres. Other important factors that affect the design process are related to costs and deadlines. This paper will demonstrate some of our early findings in several experiments to establish nonlinear storytelling. It will conclude with a recommendation for a plausible design of such a system based on experimental work that is currently being conducted and is reaching its final stages. The paper will lay the foundations of a possible path to implementation based on the concept of multi-path animation that is appropriate for structuring the design process as used in the building industry.
series	CAADRIA
email
last changed	2022/06/07 07:54

_id	30fc
authors	Alfredo, Andia
year	2001
title	Talleres por Internet: Evaluacion de La Experiencia colaborativa del "Internet Studios Constortium" [Online Studios: Evaluation of Collaborative Experience "Internet Studios Consortium"]
source	2da Conferencia Venezolana sobre Aplicación de Computadores en Arquitectura, Maracaibo (Venezuela) december 2001, pp. 110-115
summary	This paper explores the pedagogical use of Internet in design-studio teaching in architectural education. The findings are based on a three-year experience working in semester long projects in which large numbers of participants (from 35 to 300 students) from Miami, Santiago, Valparaiso, Buenos Aires, Rosario, Maracaibo, Caracas and Guayaquil collaborated using the Internet in various format. The majority of the collaboration has been accomplished by using low-bandwidth Internet communication such as Web publishing, Chat, Web3D, RealPlayer, IP videoconferencing, CAD software, and other technologies such as ISDN broadcasting. New grants, obtained from Global Crossing, Cisco, and Lucent Technologies, from the Ampath project at FIU, Miami, is supporting a new series of experimentation with high-bandwidth technologies on the Internet2 Abilene Network.
series	other
email
last changed	2003/11/21 15:15

_id	0bab
authors	Araya, Hirokazu and Kagoshima, Masayuki
year	2001
title	Semi-automatic control system for hydraulic shovel
source	Automation in Construction 10 (4) (2001) pp. 477-486
summary	A semi-automatic control system for a hydraulic shovel has been developed. Using this system, unskilled operators can operate a hydraulic shovel easily and accurately. A mathematical control model of a hydraulic shovel with a controller was constructed and a control algorithm was developed by simulation. This algorithm was applied to a hydraulic shovel and its effectiveness was evaluated. High control accuracy and high-stability performance were achieved by feedback plus feedforward control, nonlinear compensation, state feedback and gain scheduling according to the attitude.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	45a2
authors	Armesto, Tristán
year	2001
title	SIMULACRO ARQUITECTÓNICO AL ALCANCE DE LAS MANOS (Architectonic Simulacrum within Reach)
source	SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 148-150
summary	Since middle ‘90’s, the outbreak of 3d hardware acceleration devices for PC software, has facilitated a great evolvement in what is known as “Role Play Games” (RPG) – within the entertainment software industry. This development has produced such a phenomenon that surpassed all expectations. Through the game “engine” tools, virtual spaces can be achieved according to an editor’s criterium. Thus, a varied range of uses in different research fields are permitted. It is possible to build architectural simulations with high degree of realism an interactivity by means of ‘levels editors’ found in most of this games.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	5a82
authors	Bouvet, D., Froumentin, M. and Garcia, G.
year	2001
title	A real-time localization system for compactors
source	Automation in Construction 10 (4) (2001) pp. 417-428
summary	An operator-aiding system for compactors must incorporate a localization system. In this paper, we consider real-time kinematic (RTK) GPS and we present the solutions we have developed to maintain the positioning error lower than 0.2 m even during the satellite (limited) masking phases. By combining gyro, steering angle and speed measurements, we show that it is possible to obtain satisfying performances in dead-reckoning navigation with a low-cost internal sensor set. A forward–backward Kalman filter is proposed to deal with particularly long maskings, which typically occur when the machine works under bridges. Results of experiments carried out with an instrumented machine are presented to validate the proposed solutions.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	9a04
authors	Bouza Rodríguez, J.B., Valcarce, J.D., Baltar, X.L. and Vázquez, M.P.
year	2001
title	SISTEMA WEB INTERACTIVO CON CATÁLOGO PSEUDO-TRIDIMENSIONAL DE RODUCTOS Y VÍDEO EN TIEMPO REAL (Interactive Web System with Pseudo-Three-Dimensional Catalogue of Places and Video in Real Time)
source	SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 104-106
summary	It has been designed and developed a system Web that has video in real time and an interactive product catalogue based on pseudo-three-dimensional models, that is to say, models that they pretend to be three-dimensional, but that in fact do not have geometry 3D properly in the memory, but of an appropriate composition according to the case of geometry 2D (image or any graph), that allows to see the model from several points of view and to consult additional information (weight, material, dimensions, etc.). They have been analyzed and proven the different formats from transmission of video and audio by Internet, studying all its parameters, until finding the optimal ones for this server. In comparison with the use of format VRML (Virtual Reality Modeling Language) used commonly to put models 3D in the Web, this system that we have devised presents like advantages the low time of load, the high precision of the views of the object and the low cost of maintenance of the Web. On the other hand, one does not have the infinity of views and facility of manipulation of the VRML.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	36f5
authors	Burry, M., Burry, J. and Faulí, J.
year	2001
title	Sagrada Família Rosassa: Global Computeraided Dialogue between Designer and Craftsperson (Overcoming Differences in Age, Time and Distance)
doi	https://doi.org/10.52842/conf.acadia.2001.076
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. 076-086
summary	The rose window (‘rosassa’ in Catalan) recently completed between the two groups of towers that make up the Passion Façade of Gaudí’s Sagrada Família Church in Barcelona measures eight metres wide and thirty-five metres in height [Figure 1]. There were four phases to the design based in three distinct geographical locations. The design was undertaken on site, design description in Australia some eighteen thousand kilometres distant, stone-cutting a thousand kilometres distant in Galicia, with the completion of the window in March 2001. The entire undertaking was achieved within a timeframe of fifteen months from the first design sketch. Within this relatively short period, the entire team achieved a new marriage between architecture and construction, a broader relationship between time-honoured craft technique with high technology, and evidence of leading the way in trans-global collaboration via the Internet. Together the various members of the project team combined to demonstrate that the technical office on site at the Sagrada Família Church now has the capacity to use ‘just-in-time’ project management in order to increase efficiency. The processes and dialogues developed help transcend the tyranny of distance, the difficult relationship between traditional craft based technique and innovative digitally enhanced production methods, and the three generational age differences between the youngest and more senior team members.
keywords	Digital Practice, Global Collaboration, Rapid Prototyping
series	ACADIA
email
last changed	2022/06/07 07:54

_id	07bf
authors	Drewe, Paul
year	2001
title	ICT and urban design, a paradigm challenge
source	CORP 2001, Vienna, pp. 331-334
summary	Dealing with ICT, a design studio has been created, dedicated to the "Network City". There is no direct link between ICT and spatialstructure. And the spatial impacts of the new technology still involve high levels of uncertainty. That is where design comes in as itcan demonstrate and visualize what could be. The future urban agglomeration is one of the test-beds. The approach is one of designorientedresearch aiming at possible futures. This approach might be referred to as "research by design", but certainly also involves"design by research". It is, not unlike many aspects of ICT, not a simple matter of either/or.
series	other
email
more	www.corp.at
last changed	2002/12/19 12:15

_id	cf2009_585
id	cf2009_585
authors	E. Swarts, Matthew; A. Sheward, Hugo
year	2009
title	Using multi-level virtual environments as a medium for conducting design review through a shared IFC dataset
source	T. Tidafi and T. Dorta (eds) Joining Languages, Cultures and Visions: CAADFutures 2009, PUM, 2009, pp. 585- 597
summary	For a long time the Architecture-Engineering-Construction (AEC) community has had difficulty in communicating the content of their work, not only the various specialties involved, but also to their clients. Studies (Doorst and Cross 2001; Bakhtin 1994) suggest the importance of multi-role collaborative environments in supporting design processes. We are developing a Multi Level Design Review Tool for the AEC industry which allows multiple actors to congregate and interact as agents around a central Building Model. It merges real-time virtual 3D visualization technologies with Industry Foundation Classes (IFC) to support both high levels of semantic content and seamless interoperability.
keywords	Design review, virtual environment, interoperability
series	CAAD Futures
email
last changed	2009/06/08 20:53

_id	dc3f
authors	Fernández, Mónica Inés and Piegari, Ricardo Gustavo
year	2001
title	LA GRÁFICA DIGITAL COMO ÁREA DISCIPLINAR DE LA ARQUITECTURA (Digital Graphics as a Discipline inj Architecture)
source	SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 216-217
summary	Although we are already in the new millennium, some architects still doubt about the discipline introduction of the Digital Graph in architects development. For that reason, it is important to put forward some reflections in the sigradi, that collaborate to establish and spread the digital graph as a disciplinary area of teaching architecture. The Digital Graph included in the University of Architecture and postgraduation, collaborates from the biginning in the discipline development, as long as it trains and teaches the new way of architecture representation and prefiguration that arise from the introduction of new tools.
series	SIGRADI
email
last changed	2016/03/10 09:51

_id	ga0124
id	ga0124
authors	Feuerstein, Penny L.
year	2001
title	Art In The Digital Age: Using Computer As An Expressive Tool
source	International Conference on Generative Art
summary	I use digital technology to visualize the theory that we experience any one moment in a "constant state of collage". I literally "scan" the moment, scanning objects such as rocks or paper, energy, and ideas into the computer to convert them to a new common language of binary numbers. After scanning, I work with digital tools to create generation, replication, and integration. These three attributes of the computer are used throughout my work. In this way the computer is used as an expressive tool to visualize the subconscious layering and relayering that occurs as the mind processes "experience" -that moment when the physical, intellectual, emotional and spiritual come together as one. I call this my "assemblage of the mind" with all that surrounds it. To illustrate this concept, I use software such as High Rez QFX or Photoshop to manipulate images of photographs drawings and paintings. I am exploring what happens to the gestural quality of the line or brushtroke when it has been maniplatedwith these digital tools. The manipulation of photography, drawings, paintings and found objects expresses a new reality that reflects this digital age.Digital imaging intensifies this reality because youhave the potential for infinite replications of the same image within one artwork. By making many reproductions it substitutes a plurality of copies for a unique existance. Using the generative tools, this plurality is taken a step further because it actually mimics our existance. Looking at Kasimir Malevich's painting, "basic Suprematist Element" inspired me to paint a brushstroke and transcend a photo of a landscape into it. By using transparency tools to integrate objects and photos with paintings, I want toconvey that the objective consciousness of an object is just as important as the subjective inner state of consciousness in experiencing reality. The irony is that my theory directly opposes Malevich's theories on Suprematism, yet it was Malevich who inspired me.
series	other
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	5607
authors	Goldschmidt, Gabriela
year	2001
title	Is a Figure-Concept Binary Argumentation Pattern Inherent in Visual Design Reasoning?
source	J. S. Gero, B. Tversky and T. Purcell (eds), 2001, Visual and Spatial Reasoning in Design, II - Key Centre of Design Computing and Cognition, University of Sydney, Australia
summary	This paper is based on the assumption that because designingis aimed at specifying configurations of entities, designers mustmanipulate forms and shapes and they must resort to visual reasoning todo so. Visual reasoning in designing is seen as the interplay betweenfigural and conceptual reasoning, such that the one supports andcontinues the other in order to arrive at a configuration that is valid interms of all the requirements it is to satisfy. We use protocol analysis toexplore the bond between conceptual and figural reasoning at two levelsof cognitive operation – that of the design move and that of theargument that is its building block. We conclude that the two modes ofreasoning are equi-present in designing; they describe a binary systemcharacterized by high frequency shifts between figure and concept.
series	other
email
more	http://www.arch.usyd.edu.au/kcdc/conferences/vr01/
last changed	2003/05/02 11:16

_id	b7a0
authors	Guillon, Sol M.
year	2001
title	COLOR, FORMA Y CINETICA (Color, Form and Cinetics)
source	SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 171-172
summary	“Color, Shape and Movement” is a course for Architecture, Design and Arts students of the Universidad Finis Terrae. The course is developed as a computer based experimentation laboratory whose objective is to give the students a perception of color and shape in a dynamic environment, with movement, direction and speed, in a search of a different perspective from those given in the traditional colour courses. This means of expression confirms the computer as another form of creative and artistic language.
series	SIGRADI
email
last changed	2016/03/10 09:53

_id	ae8a
authors	Hanson, Gabriel Quinn
year	2001
title	Connection & Transition, Exploring Place-Based Physical Environment in a Digital Media FirmPhysical Environment in a Digital Media Firm
source	University of Washington, Design Machine Group
summary	The design solution of the typical high-tech firm bombards its employees with the same signs and sleek coded information that they are designing, instead of addressing their innate biological needs. In the workplace specifically, the change in technology has a pernicious result when its relationships are deployed society-wide as subsitutes for face-to face interactions, which are inherently richer than mediated interactions. This thesis presents a design of a media firm that engages build environment with lighting and natural and a CD-Rom digital sketchbookof the design process.
series	thesis:MSc
more	http://dmg.caup.washington.edu/xmlSiteEngine/browsers/stylin/publications.html
last changed	2004/06/02 19:12

_id	sigradi2009_903
id	sigradi2009_903
authors	Harris, Ana Lúcia Nogueira de Camargo
year	2009
title	O Uso da Técnica dos "Planos em Série" com o Desenvolvimento da Computação Gráfica - Uma Experência Didática [The Use of the 'Serial Plan' Technique with the Development of the Computer Graphic - A Teaching Experience]
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	This paper is about comparative didactic experiences where the “Serial plan Technique” defined by Wong (1998), was applied in 2001 and 2008 which computer resources from that time. In 2001 this technique was applied with the help of AutoCAD for generation of the planifications, but in 2008 the appliances of AutoCAd and Sketch Up were used for the virtual construction of objects. The quality of the results showed a didactic potential and an increasement in the possible creative rhythm, mainly because the facility of the three-dimensional virtual visualization and because the speed in the physical execution of the created project.
keywords	didactic experiences; serial plan technique; CAD; AutoCAD; Skecht Up
series	SIGRADI
email
last changed	2016/03/10 09:53

_id	ef9e
authors	Harris, Robert
year	2001
title	The Digital Sandbox: Integrating Design and Analysis in a new Earth-forming Tool
source	University of Washington, Design Machine Group
summary	The design solution of the typical high-tech firm bombards its employees with the same signs and sleek coded information that they are designing, instead of addressing their innate biological needs. In the workplace specifically, the change in technology has a pernicious result when its relationships are deployed society-wide as subsitutes for face-to face interactions, which are inherently richer than mediated interactions. This thesis presents a design of a media firm that engages build environment with lighting and natural and a CD-Rom digital sketchbookof the design process.
series	thesis:MSc
email
more	http://dmg.caup.washington.edu/xmlSiteEngine/browsers/stylin/publications.html
last changed	2004/06/02 19:12

_id	caadria2006_613
id	caadria2006_613
authors	JAEHO RYU, NAOKI HASHIMOTO, MAKOTO SATO, MASASHI SOEDA, RYUZO OHNO
year	2006
title	A GAME ENGINE BASED ARCHITECTURAL SIMULATOR ON MULTI-PROJECTOR DISPLAYS
doi	https://doi.org/10.52842/conf.caadria.2006.x.m1v
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 613-615
summary	To make whole one image on screens that is generated by many computers and synchronization among computers, there is a need for a network software environment for multi-projector display system. Although the development costs increase for parallel programming for multi-projector display system, there is a possibility that the program cannot be executed at an enough speed since the network bandwidth might become a bottleneck. There are some software environments for that kind of multi-projector display system like Chromium that is latest version of WireGL (Humphreys, 2001&2002). WireGL is a kind of Client-Server Model, which one rendering server sends the data of rendering to many computers. While it can use the application without modification of source, it requires heavy network traffics. The other type of operating software is VR Juggler (Cruz-Neira, 2002), and CAVE Library that is a kind of Master-Slave Model. In the Master-Slave Model, every computer has same application programs to render the image that only keep the synchronization of rendering and events. But, these programs require a specialized skill and knowledge to modify the source of program for the certain rendering PC-Cluster system.
series	CAADRIA
email
last changed	2022/06/07 07:49

_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

For more results click below: