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	0f1e
authors	Barrionuevo, Luis F.
year	1999
title	Posicionamiento de Volúmenes Arquitectónicos Mediante Algoritmos Evolucionistas (Positioning of Architectural Volumes by Means of Evolutionist Algorithms)
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 176-181
summary	Configurational studies involve the groups of elements fulfilling restrictions defined by the designer in Architectural design. According to its necessities and intentions, the planner distributes the components of the group in a certain tridimensional way, establishing a composition. This operative procedure implies a classification system according to typologies that respond to a bigger system, and this in turn to another, until the whole is obtained. From the beginning the pattern should satisfy form restrictions, as well as dimensional and positional restrictions for each part that conforms the whole. Functional requirements are attended for each object satisfying relationships of connectivity and adjacency among them. In this work the parts are restricted by their relative position to a central element. Evolutionary Algorithms (EA) are used to solve this type of problem. Using evolutionary metaphors they originate concepts such as "genes", "chromosomes", "mutation", "crosses” and " population " (among other), which come closer to one of the solutions looked for by the designer, under combinatory stochastic methods. The most appropriate use of EA corresponds to problems of complexity NP-completeness (for example, problems of generation of cases of composition), allowing an efficient although not exhaustive analysis. Applying this technique to the generation of architectural volumes, some obtained results are exemplified.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	ecc5
authors	Bassanino, May Nahab
year	1999
title	The perception of computer generated architectural images
source	Liverpool University
summary	The broad aim of the research is to examine the role of computer generated architectural images on the way different people perceive architecture, and within this field of interest I have established a list of specific tasks to define the specific points of interest to examine. The following list of the main research objectives served as a guide in designing the experimental tests undertaken as part of this research: () Study the effect of both representation techniques and the used media on perceiving architecture. () Establish the differences (if there are any) of perception between different groups of people; principally architects and non-architects, but also subsets of each of these two groups. () To suggest the appropriate technique for presenting architecture for a particular group in a particular stage in the design process. () To investigate the influence of CAAD in architectural education on the students’ perception for architectural images.
series	thesis:PhD
last changed	2003/11/21 15:16

_id	328d
authors	Bassanino, May Nahab and Brown, Andre
year	1999
title	Computer Generated Architectural Images: A Comparative Study
doi	https://doi.org/10.52842/conf.ecaade.1999.552
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 552-556
summary	This work is part of a long term research programme (Brown and Horton, 1992; Brown and Nahab, 1996; Bassanino, 1999) in which tests and studies have been carried out on various groups of people to investigate their reaction to, and interpretation of different forms of architectural representation. In the work described here a range of architectural schemes were presented using particular representational techniques and media. An experiment was then undertaken on two different groups; architects and lay people. They were presented with a number of schemes displayed using the various techniques and media. The responses are summarised and some comments are made on the effect of computers on perceiving architecture and on communicating architectural ideas arising from an analysis of the responses.
keywords	Subject, Image Type, Presentation Technique, Medium, SD Scales, Factors
series	eCAADe
email
last changed	2022/06/07 07:54

_id	48a7
authors	Brooks
year	1999
title	What's Real About Virtual Reality
source	IEEE Computer Graphics and Applications, Vol. 19, no. 6, Nov/Dec, 27
summary	As is usual with infant technologies, the realization of the early dreams for VR and harnessing it to real work has taken longer than the wild hype predicted, but it is now happening. I assess the current state of the art, addressing the perennial questions of technology and applications. By 1994, one could honestly say that VR "almost works." Many workers at many centers could doe quite exciting demos. Nevertheless, the enabling technologies had limitations that seriously impeded building VR systems for any real work except entertainment and vehicle simulators. Some of the worst problems were end-to-end system latencies, low-resolution head-mounted displays, limited tracker range and accuracy, and costs. The technologies have made great strides. Today one can get satisfying VR experiences with commercial off-the-shelf equipment. Moreover, technical advances have been accompanied by dropping costs, so it is both technically and economically feasible to do significant application. VR really works. That is not to say that all the technological problems and limitations have been solved. VR technology today "barely works." Nevertheless, coming over the mountain pass from "almost works" to "barely works" is a major transition for the discipline. I have sought out applications that are now in daily productive use, in order to find out exactly what is real. Separating these from prototype systems and feasibility demos is not always easy. People doing daily production applications have been forthcoming about lessons learned and surprises encountered. As one would expect, the initial production applications are those offering high value over alternate approaches. These applications fall into a few classes. I estimate that there are about a hundred installations in daily productive use worldwide.
series	journal paper
email
last changed	2003/04/23 15:14

_id	f11d
authors	Brown, K. and Petersen, D.
year	1999
title	Ready-to-Run Java 3D
source	Wiley Computer Publishing
summary	Written for the intermediate Java programmer and Web site designer, Ready-to-Run Java 3D provides sample Java applets and code using Sun's new Java 3D API. This book provides a worthy jump-start for Java 3D that goes well beyond the documentation provided by Sun. Coverage includes downloading the Java 2 plug-in (needed by Java 3D) and basic Java 3D classes for storing shapes, matrices, and scenes. A listing of all Java 3D classes shows off its considerable richness. Generally, this book tries to cover basic 3D concepts and how they are implemented in Java 3D. (It assumes a certain knowledge of math, particularly with matrices, which are a staple of 3D graphics). Well-commented source code is printed throughout (though there is little additional commentary). An applet for orbiting planets provides an entertaining demonstration of transforming objects onscreen. You'll learn to add processing for fog effects and texture mapping and get material on 3D sound effects and several public domain tools for working with 3D artwork (including converting VRML [Virtual Reality Markup Language] files for use with Java 3D). In all, this book largely succeeds at being accessible for HTML designers while being useful to Java programmers. With Java 3D, Sun is betting that 3D graphics shouldn't require a degree in computer science. This book reflects that philosophy, though advanced Java developers will probably want more detail on this exciting new graphics package. --Richard Dragan Topics covered: Individual applets for morphing, translation, rotation, and scaling; support for light and transparency; adding motion and interaction to 3D objects (with Java 3D classes for behaviors and interpolators); and Java 3D classes used for event handling.
series	other
last changed	2003/04/23 15:14

_id	4989
authors	Clayton, M.J., Teicholz, P., Fischer, M. and Kunz, J.
year	1999
title	Virtual components consisting of form, function and behavior
source	Automation in Construction 8 (3) (1999) pp. 351-367
summary	Software can produce a product model of a building as a consequence of the designers' actions in drawing and evaluating the design. The actions of the designer include interpreting, predicting and assessing the emerging design and describe the building in terms of forms, functions and behaviors. A software prototype has been implemented that incorporates this understanding of the design process in the field of building design. It employs object-oriented classes to represent forms, functions and behaviors. As a software user draws and interprets the design for multiple evaluation issues, the software creates a unique `virtual component' for each entity. During automated reasoning to evaluate the emerging design, virtual components collect and organize form, function and behavior instances to describe the parts of the building. In comparison to other product models, our approach, which we refer to as a `Virtual Product Model', better accommodates change, provides increased support for the design process and enriches the product representation by including function and behavior.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	762b
authors	De Paoli, Giovanni and Bogdan, Marius
year	1999
title	The Front of the Stage of Vitruvius' Roman Theatre - A new Approach of Computer Aided Design that Transforms Geometric Operators to Semantic Operators
source	Proceedings of the Eighth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-8536-5] Atlanta, 7-8 June 1999, pp. 321-333
summary	The driving force of all researches where the systems of computation are used, is the utilization of an intelligent method for the representation of building. The use of computer, in design process, is often limited to technical functions (tekhne), and what one usually calls computer-aided design is often no more than computer-aided drawing. In this research paper we continue a reflection on the architect's work methods, and suggest an approach to design based on the semantic properties of the object (i.e. semantic operators), rather than by geometric operators. We propose a method of computer aid design using procedural models where the initial state of design is vague and undefined. We operate from a paradigm that leads to represent a building by means of parametric functions that, expressed algorithmically, give a procedural model to facilitate the design process. This approach opens new avenues that would permit to add the logos (semantic properties) and lead to a metaphorical representation. By means of procedural models, we show that, from a generic model we can produce a four dimensional model that encapsulate a volumetric model with semantic characteristics. We use a meta-functional language that allows us to model the actions and encapsulate detailed information about various building elements. This descriptive mechanism is extremely powerful. It helps to establish relations between the functions, contributes to a better understanding of the project's aim, and encapsulates the building properties by recalling characteristics of common classes which give rise to a new configuration and a completely original design. The scientific result of this experiment is the understanding and confirmation of the hypothesis that it is possible to encapsulate, by means of computing process, the links between design moves during conceptual and figural decisions and transform the geometric operators in semantic operators.
keywords	Architecture, CAD, Function, Modeling, Semantic Operator, Geometric Operator
series	CAAD Futures
last changed	2006/11/07 07:22

_id	54a6
authors	Eastman, C. and Jeng, T.S.
year	1999
title	A database supporting evolutionary product model development for design
source	Automation in Construction 8 (3) (1999) pp. 305-323
summary	This paper presents the facilities in the EDM-2 product modeling and database language that support model evolution. It reviews the need for model evolution as a system and/or language requirement to support product modeling. Four types of model evolution are considered: (1) translation between distinct models, (2) deriving views from a central model, (3) modification of an existing model, and (4) model evolution based on writable views associated with each application. While the facilities described support all for types of evolution, the last type is emphasized. The language based modeling capabilities described in EDM-2 include: (a) mapping facilities for defining derivations and views within a single model or between different models; (b) procedural language capabilities supporting model addition, deletion and modification; (c) support for object instance migration so as to partition the set of class instances into multiple classes; (d) support for managing practical deletion of portions of a model; (e) explicit specification and automatic management of integrity between a building model and various views. The rationale and language features, and in some cases, the implementation strategy for the features, are presented.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	8c06
authors	Eastman, C.M.
year	1999
title	Building Product Models
source	CRC Press, NewYork
summary	Presents the concepts, technology, and methods used to develop a new, digital representation for architecture, civil engineering, and building construction. Eastman (architecture and computing, Georgia Institute of Technology) introduces and explains ISO-STEP and the Industry Foundation Classes, as well as reviewing modeling concepts, supporting technologies, and standards. He uses numerous examples and figures, making this book both accessible as a text for graduate students, and as a reference for professionals in the fields of real estate, building, and software development.
series	other
email
last changed	2003/04/23 15:14

_id	d79a
authors	Ekholm, Anders and Fridqvist, Sverker
year	1999
title	The BAS*CAAD Information System for Design principles, Implementation, and a Design Scenario
source	Proceedings of the Eighth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-8536-5] Atlanta, 7-8 June 1999, pp. 149-164
summary	The objectives of the BAS-CAAD-project are to investigate into theories and methods for computer aided architectural design, with emphasis on requirements of early stages of the design process. Information systems can be characterised as static or dynamic concerning the definition of classes in the model schema, and concerning classification of model objects. The paper presents the BAS-CAAD system, a prototype software that implements the conceptually most important features of a dynamic information system for design. The BAS-CAAD information system is built on a generic ontological framework. The system allows a free combination of attributes, supporting the incremental way that knowledge is built up during design. It provides a generic library structure that allows definition of objects classes in different levels of generalisation that may originate from international standards or the individual designer. For example, in the construction context, it allows modelling of buildings and their parts, as well as user organisations and user activities. The function of the system is illustrated in two scenarios.
keywords	CAD, Design, Dynamic Schema Evolution, Information Systems, Object Oriented Modelling, Product Modelling, Design Scenario
series	CAAD Futures
email
last changed	2006/11/07 07:23

_id	e4a7
authors	Espina B., Jane J.
year	2001
title	La tecnologia digital en las edificaciones arquitectonicas de la modernidad [The Digital Tecnology In Modern Architectural Constructions]
source	2da Conferencia Venezolana sobre Aplicación de Computadores en Arquitectura, Maracaibo (Venezuela) december 2001, pp. 136-145
summary	This paper gives an overview of the experience developed by Computer Graphics II course of department of Communication in School of Architecture and Design of University of Zulia which was initiated since 1999.The work describes the methodology used by two groups of objectives: general of the course and those generated by experiences in two levels: one as analysis instruments and the other one during process of design. Course is looking for trainning in CAD system uses by 3D representation of modern buildings, so at the end of the experience students were succeed : 1) analysis of projects of modern architecture, 2) quick visualization and efficient volumetric representation, 3) make a digital format library of differents buildings of the city and 4) comprehension and historic knowledge of city. CAD systems used for representation of 2d and 3D drawings offer to architects tools as color, textures, shadows, plus generation of different points of view as isometrics, perspectives and realistic representations. The digital format of the selected buildings gives to drafts an additional value.
keywords	Modern Architecture; Three-Dimensional; Realistic Representation; CAD Systems; Digital Format
series	other
email
last changed	2003/02/14 08:29

_id	db00
authors	Espina, Jane J.B.
year	2002
title	Base de datos de la arquitectura moderna de la ciudad de Maracaibo 1920-1990 [Database of the Modern Architecture of the City of Maracaibo 1920-1990]
source	SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 133-139
summary	Bases de datos, Sistemas y Redes 134The purpose of this report is to present the achievements obtained in the use of the technologies of information andcommunication in the architecture, by means of the construction of a database to register the information on the modernarchitecture of the city of Maracaibo from 1920 until 1990, in reference to the constructions located in 5 of Julio, Sectorand to the most outstanding planners for its work, by means of the representation of the same ones in digital format.The objective of this investigation it was to elaborate a database for the registration of the information on the modernarchitecture in the period 1920-1990 of Maracaibo, by means of the design of an automated tool to organize the it datesrelated with the buildings, parcels and planners of the city. The investigation was carried out considering three methodologicalmoments: a) Gathering and classification of the information of the buildings and planners of the modern architectureto elaborate the databases, b) Design of the databases for the organization of the information and c) Design ofthe consultations, information, reports and the beginning menu. For the prosecution of the data files were generated inprograms attended by such computer as: AutoCAD R14 and 2000, Microsoft Word, Microsoft PowerPoint and MicrosoftAccess 2000, CorelDRAW V9.0 and Corel PHOTOPAINT V9.0.The investigation is related with the work developed in the class of Graphic Calculation II, belonging to the Departmentof Communication of the School of Architecture of the Faculty of Architecture and Design of The University of the Zulia(FADLUZ), carried out from the year 1999, using part of the obtained information of the works of the students generatedby means of the CAD systems for the representation in three dimensions of constructions with historical relevance in themodern architecture of Maracaibo, which are classified in the work of The Other City, generating different types ofisometric views, perspectives, representations photorealistics, plants and facades, among others.In what concerns to the thematic of this investigation, previous antecedents are ignored in our environment, and beingthe first time that incorporates the digital graph applied to the work carried out by the architects of “The Other City, thegenesis of the oil city of Maracaibo” carried out in the year 1994; of there the value of this research the field of thearchitecture and computer science. To point out that databases exist in the architecture field fits and of the design, alsoweb sites with information has more than enough architects and architecture works (Montagu, 1999).In The University of the Zulia, specifically in the Faculty of Architecture and Design, they have been carried out twoworks related with the thematic one of database, specifically in the years 1995 and 1996, in the first one a system wasdesigned to visualize, to classify and to analyze from the architectural point of view some historical buildings of Maracaiboand in the second an automated system of documental information was generated on the goods properties built insidethe urban area of Maracaibo. In the world environment it stands out the first database developed in Argentina, it is the database of the Modern andContemporary Architecture “Datarq 2000” elaborated by the Prof. Arturo Montagú of the University of Buenos Aires. The general objective of this work it was the use of new technologies for the prosecution in Architecture and Design (MONTAGU, Ob.cit). In the database, he intends to incorporate a complementary methodology and alternative of use of the informationthat habitually is used in the teaching of the architecture. When concluding this investigation, it was achieved: 1) analysis of projects of modern architecture, of which some form part of the historical patrimony of Maracaibo; 2) organized registrations of type text: historical, formal, space and technical data, and graph: you plant, facades, perspectives, pictures, among other, of the Moments of the Architecture of the Modernity in the city, general data and more excellent characteristics of the constructions, and general data of the Planners with their more important works, besides information on the parcels where the constructions are located, 3)construction in digital format and development of representations photorealistics of architecture projects already built. It is excellent to highlight the importance in the use of the Technologies of Information and Communication in this investigation, since it will allow to incorporate to the means digital part of the information of the modern architecturalconstructions that characterized the city of Maracaibo at the end of the XX century, and that in the last decades they have suffered changes, some of them have disappeared, destroying leaves of the modern historical patrimony of the city; therefore, the necessity arises of to register and to systematize in digital format the graphic information of those constructions. Also, to demonstrate the importance of the use of the computer and of the computer science in the representation and compression of the buildings of the modern architecture, to inclination texts, images, mapping, models in 3D and information organized in databases, and the relevance of the work from the pedagogic point of view,since it will be able to be used in the dictation of computer science classes and history in the teaching of the University studies of third level, allowing the learning with the use in new ways of transmission of the knowledge starting from the visual information on the part of the students in the elaboration of models in three dimensions or electronic scalemodels, also of the modern architecture and in a future to serve as support material for virtual recoveries of some buildings that at the present time they don’t exist or they are almost destroyed. In synthesis, the investigation will allow to know and to register the architecture of Maracaibo in this last decade, which arises under the parameters of the modernity and that through its organization and visualization in digital format, it will allow to the students, professors and interested in knowing it in a quicker and more efficient way, constituting a contribution to theteaching in the history area and calculation. Also, it can be of a lot of utility for the development of future investigation projects related with the thematic one and restoration of buildings of the modernity in Maracaibo.
keywords	database, digital format, modern architecture, model, mapping
series	SIGRADI
email
last changed	2016/03/10 09:51

_id	ca7b
authors	Howes, Jaki
year	1999
title	IT or not IT? An Examination of IT Use in an Experimental Multi-disciplinary Teamwork Situation
doi	https://doi.org/10.52842/conf.ecaade.1999.370
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 370-373
summary	Leeds Metropolitan University is well placed to carry out research into multi-disciplinary team-working, as all the design and construction disciplines are housed in one faculty. Staff have set up an experimental project, TIME IT (Team-working in Multi-disciplinary Environments using IT) which examines ways of working in the design/construction process and how IT is used when there is no commercial pressure. Four groups of four students, one graduate diploma architect, and one final year student from each of Civil Engineering, Construction Management and Quantity Surveying have been working on feasibility studies for projects that are based on completed schemes or have been devised by collaborators in the Construction Industry. Students have been asked to produce a PowerPoint presentation, in up to five working days, of a design scheme, with costs, structural analysis and construction programme. The students are not assessed on the quality of the product, but on their own ability to monitor the process and use of IT. Despite this, aggressive competition evolved between the teams to produce the 'best' design. Five projects were run in the 1998/99 session. A dedicated IT suite has been provided; each group of students had exclusive use of a machine. They were not told how to approach the projects nor when to use the available technology, but were asked to keep the use of paper to a minimum and to keep all their work on the server, so that it could be monitored externally. Not so. They plotted the AO drawings of an existing building that had been provided on the server. They like paper - they can scribble on it, fold it, tear it and throw it at one another.
keywords	IT, Multi-disciplinary, Teamwork
series	eCAADe
email
last changed	2022/06/07 07:50

_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	62c2
authors	Kavakli, M., Suwa, M., Gero, J.S. and Purcell, T.
year	1999
title	Sketching interpretation in novice and expert designers
source	Gero, J.S. and Tversky, B. (Eds.), Visual and Spatial Reasoning in Design , Key Centre of Design Computing and Cognition, University of Sydney, Sydney, Australia, pp. 209-220
summary	This paper focuses on the differences in visual reasoning between a novice and an expert architectural designer during the conceptual design process. The cognitive actions of each designer while sketching were categorized into four main groups (each consisting of a number of sub-groups): physical, perceptual, functional, and conceptual. Based on this analysis, we found that the expert differs markedly from the novice in productivity in terms of the number of sketches and the number of alternative ideas. We focused on the differences between them in terms of the frequencies of cognitive actions, with the hypothesis that the difference in productivity could be attributed to the differences in some or all types of cognitive actions. Differences between the expert and the novice were found for revising features (in the subcategory of drawing actions in the physical action category), for paying attention to the relations of depicted elements (perceptual category) and for the rates of new and revisited functions (functional category). These results are discussed in terms of the types of visual reasoning processes that could be involved in expert design and the possible implications of these results if they can be demonstrated to be characteristic of expert designers generally.
keywords	Visual Reasoning, Cognitive Actions, Sketching Interpretation
series	other
email
last changed	2003/04/06 09:18

_id	39cb
authors	Kelleners, Richard H.M.C.
year	1999
title	Constraints in object-oriented graphics
source	Eindhoven University of Technology
summary	In the area of interactive computer graphics, two important approaches to deal with the complexity of designing and implementing graphics systems are object-oriented programming and constraint-based programming. From literature, it appears that combination of these two has clear advantages but has also proven to be difficult. One of the main problems is that constraint programming infringes the information hiding principle of object-oriented programming. The goal of the research project is to combine these two approaches to benefit from the strengths of both. Two research groups at the Eindhoven University of Technology investigate the use of constraints on graphics objects. At the Architecture department, constraints are applied in a virtual reality design environment. At the Computer Science department, constraints aid in modeling 3D animations. For these two groups, a constraint system for 3D graphical objects was developed. A conceptual model, called CODE (Constraints on Objects via Data flows and Events), is presented that enables integration of constraints and objects by separating the object world from the constraint world. In the design of this model, the main aspect being considered is that the information hiding principle among objects may not be violated. Constraint solvers, however, should have direct access to an object’s internal data structure. Communication between the two worlds is done via a protocol orthogonal to the message passing mechanism of objects, namely, via events and data flows. This protocol ensures that the information hiding principle at the object-oriented programming level is not violated while constraints can directly access “hidden” data. Furthermore, CODE is built up of distinct elements, or entity types, like constraint, solver, event, data flow. This structure enables that several special purpose constraint solvers can be defined and made to cooperate to solve complex constraint problems. A prototype implementation was built to study the feasibility of CODE. Therefore, the implementation should correspond directly to the conceptual model. To this end, every entity (object, constraint, solver) of the conceptual model is represented by a separate process in the language MANIFOLD. The (concurrent) processes communicate by events and data flows. The implementation serves to validate the conceptual model and to demonstrate that it is a viable way of combining constraints and objects. After the feasibility study, the prototype was discarded. The gained experience was used to build an implementation of the conceptual model for the two research groups. This implementation encompassed a constraint system with multiple solvers and constraint types. The constraint system was built as an object-oriented library that can be linked to the applications in the respective research groups. Special constructs were designed to ensure information hiding among application objects while constraints and solvers have direct access to the object data. CODE manages the complexity of object-oriented constraint solving by defining a communication protocol to allow the two paradigms to cooperate. The prototype implementation demonstrates that CODE can be implemented into a working system. Finally, the implementation of an actual application shows that the model is suitable for the development of object-oriented software.
keywords	Computer Graphics; Object Oriented Programming; Constraint Programming
series	thesis:PhD
last changed	2003/02/12 22:37

_id	0beb
authors	Koch, Volker and Russell, Peter
year	2000
title	VuuA.Org: The Virtual Upperrhine University of Architecture
doi	https://doi.org/10.52842/conf.ecaade.2000.023
source	Promise and Reality: State of the Art versus State of Practice in Computing for the Design and Planning Process [18th eCAADe Conference Proceedings / ISBN 0-9523687-6-5] Weimar (Germany) 22-24 June 2000, pp. 23-25
summary	In 1998, architecture schools in the three nation region of the upper Rhine came together to undertake a joint design studio. With the support of the Center for Entrepeneurship in Colmar, France, the schools worked on the reuse of the Kuenzer Mill situated near Herbolzheim, Germany. The students met jointly three times during the semester and then worked on the project at their home universities usng conventional methods. This project was essential to generating closer ties between the participating students, tutors and institutions and as such, the results were quite positive. So much so, that the organisers decided to repeat the exercise one year later. However, it became clear that although the students had met three times in large groups, the real success of a co-operative design studio would require mechanisms which allow far more intimate interaction among the participants, be they students, teachers or outside experts. The experiences from the Netzentwurf at the Institut für Industrielle Bauproduktion (ifib) showed the potential in a web based studio and the addition of ifib to the three nation group led to the development of the VuuA platform. The first project served to illuminate the the differences in teaching concepts among the partner institutions and their teaching staff as well as problems related to the integration of students from three countries with two languages and four different faculties: landscape architecture, interior design, architecture and urban planning. The project for the Fall of 1999 was the reuse of Fort Kléber in Wolfisheim by Strasbourg, France. The students again met on site to kick off the Semester but were also instructed to continue their cooperation and criticism using the VuuA platform.
keywords	Virtual Design Studio, CSCW, International Cooperation, Planning Platform
series	eCAADe
email
more	http://www.vuua.org
last changed	2022/06/07 07:51

_id	7e64
authors	Koutamanis, Alexander
year	1999
title	Approaches to the Integration of CAAD Education in the Electronic Era: Two Value Systems
doi	https://doi.org/10.52842/conf.ecaade.1999.238
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 238-243
summary	In recent years the democratization of information and communication technologies (ICT) has become the greatest influence on the structure of CAAD education. While the content of the CAAD courses simply had to absorb the new technological possibilities, the structure of the courses and in particular their relationship to the rest of the curriculum has become the subject of speculation and experimentation. Integration of CAAD education in an architectural curriculum occurs either by (a) placing emphasis on designing in CAAD courses, or by (b) integrating computing in design courses. Both approaches respond to the democratization of ICT by making design computing widely available and acceptable. Further improvement is possible if the student becomes the carrier of integration. This is based on the long-term amplification of two value systems. The first refers to personal cognition: rather than rewarding a student with the teacher's approval, educational goals should be translated into individual skills and knowledge. The second system addresses the values of the peer group: such groups support learning by comparison to other individuals and emerging communal characteristics, either as a result of competition or for reasons of assimilation.
keywords	Education, Democracy, Personal Cognition
series	eCAADe
email
last changed	2022/06/07 07:51

_id	ff8b
authors	Krawczyk, Robert J.
year	1999
title	Virtual Ornaments
doi	https://doi.org/10.52842/conf.acadia.1999.x.m7d
source	ACADIA Quarterly, vol. 18, no. 4, p. 19
summary	A few years ago I began to investigate the concepts of art-to-part and single part custom manufacturing. The original designs had to created on a CAD system either manually or by algorithm and then machine produced without any manual intervention. Rapid prototyping and laser cutting technology were both reviewed and the later selected for possible use. I also had a long time interest in geometric design. At that time one of my CAD classes took some of there window designs, created from a complex series of overlapping circles, arcs, and splines, and had them laser cut. The results were astonishing.
series	ACADIA
email
last changed	2022/06/07 07:49

_id	221d
authors	Lee, Sanghyun
year	1999
title	Internet-based collaborative design evaluation : an architect's perspective
source	Harvard University
summary	This research aims at developing a design evaluation system that employs a Product Model as the logical basis for integrating building design and construction processes. The system is implemented with Java language, which allows the system to work over the Internet. Accordingly, the system helps architects to collaborate with remote participants. Thus, this design evaluation system is a building performance evaluator like DOE-2, RADIANCE, HVAC, and the Automated Building Code Checker. This research, however, is mainly concerned with an architect's view during the schematic design and design development stage, while the existing design evaluation systems cover other special consultants' views such as those of HVAC designers, structural engineers, and contractors. From an architect's view, this evaluation system checks the compliance of design objects represented by means of physical objects such as walls and windows and conceptual objects such as rooms as well, to the design criteria focused on accommodating human behavior, rather than other building performances such as sustaining building structures and maintaining indoor livability. As such, the system helps designers analyze and evaluate design solutions according to their original intent. The innovative points of this research lie in the following: (1) Unlike other inquiries, it addresses a systematic evaluation of building design from an architect's view focusing on the experiential quality of the built environment. This research demonstrates that such an evaluation becomes available by introducing human activity-based evaluation. (2) It can take a multi-agenda for several groups of different interests by providing an Aspect Model based on human activity-centered systematic translation of their design considerations and 3D model-based graphical representations into system readable ones. (3) As a result, it addresses the possibility of expanding the capability of the design evaluator from a mere code checker to a general design evaluator while simultaneously, enhancing the availability from stand alone to Internet based networking.
keywords	Architectural Rendering; Data Processing; Evaluation; Buildings; Performance; World Wide Web; Internet
series	thesis:PhD
last changed	2003/02/12 22:37

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