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	6a30
authors	Bonn, Markus
year	1989
title	Modeling Architectural Forms through Replacement Operations
source	New Ideas and Directions for the 1990’s [ACADIA Conference Proceedings] Gainsville (Florida - USA) 27-29 October 1989, pp. 103-130
doi	https://doi.org/10.52842/conf.acadia.1989.103
summary	Replacement operations, where an element at any topological level may be replaced by another element at the same or different topological level, are defined. Their potential as design tools which may be incorporated in a CAD system is investigated and demonstrated through the experimental implementation of two such operations in MARCOS, a Modeling Architectural Compositions System. MARCOS has been written in C. It is highly interactive and runs on an Apple Macintosh IIx. The two operations which have been implemented are the face -> volume and volume -> volume replacements. They were chosen for their potential as generators of architectural forms. Examples of architectural compositions produced through the use of replacement operations are also illustrated.
series	ACADIA
email
last changed	2022/06/07 07:54

_id	298e
authors	Dave, Bharat and Woodbury, Robert
year	1990
title	Computer Modeling: A First Course in Design Computing
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 61-76
summary	Computation in design has long been a focus in our department. In recent years our faculty has paid particular attention to the use of computation in professional architectural education. The result is a shared vision of computers in the curriculum [Woodbury 1985] and a set of courses, some with considerable historyland others just now being initiated. We (Dave and Woodbury) have jointly developed and at various times over the last seven years have taught Computer Modeling, the most introductory of these courses. This is a required course for all the incoming freshmen students in the department. In this paper we describe Computer Modeling: its context, the issues and topics it addresses, the tasks it requires of students, and the questions and opportunities that it raises. Computer Modeling is a course about concepts, about ways of explicitly understanding design and its relation to computation. Procedural skills and algorithmic problem solving techniques are given only secondary emphasis. In essential terms, the course is about models, of design processes, of designed objects, of computation and of computational design. Its lessons are intended to communicate a structure of such models to students and through this structure to demonstrate a relationship between computation and design. It is hoped that this structure can be used as a framework, around which students can continue to develop an understanding of computers in design.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	8ca2
authors	Miller, Frank C.
year	1990
title	Form Processing Workshop: Architectural Design and Solid Modeling at MIT
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 441-455
summary	Computing impacts the preliminary architectural design process as a tool for observation and analysis, as a formal prototyping tool, and as a vehicle to generate variations of objects and assemblies. Through the use of both traditional and computing tools, the Form Processing Workshop examines the relationship between design decisions and design tools. The Workshop utilizes several software applications, with emphasis on the use of a solid modeler. This curriculum was developed with the support of MIT's Project Athena.
series	CAAD Futures
last changed	1999/04/03 17:58

_id	0565
authors	Oxman, Robert and Oxman, Rivka
year	1990
title	The Computability of Architectural Knowledge
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 171-185
summary	In an important contribution to the theoretical foundation of design computing, Mitchell noted "an increasingly urgent need to establish a demonstrably sound, comprehensive, rigorously formalized theoretical foundation upon which to base practical software development efforts" (Mitchell, 1986). In this paper we propose such a theoretical framework. A basic assumption of this work is that the advancement of design computing is dependent upon the emergence of a rigorous formulation of knowledge in design. We present a model of knowledge in architectural design which suggests a promising conceptual basis for dealing with knowledge in computer-aided design systems. We require models which can represent the formal knowledge and manipulative operations of the designer in all of their complexity-that is formal models rather than just geometric models. Shape Grammars (Stiny,1980) represent an example of such models, and constitute a relatively high level of design knowledge as compared to, for example, use of symmetry operations to generate simple formal configurations. Building upon an understanding of the classes of design knowledge as the conceptual basis for formal modeling systems may contribute a new realization of the potential of the medium for design. This will require a comprehensive approach to the definition of architectural and design knowledge. We consider here the implications of a well-defined body of architectural and design knowledge for design education and the potential mutual interaction-in a knowledge-rich environment-of design learning and CAAD learning. The computational factors connected with the representation of design knowledge and its integration in design systems are among the key problems of CAAD. Mitchell's model of knowledge in design incorporates formal knowledge in a comprehensive, multi-level, hierarchical structure in which types of knowledge are correlated with computational concepts. In the main focus of this paper we present a structured, multi-level model of design knowledge which we discuss with respect to current architectural theoretical considerations. Finally, we analyze the computational and educational relevance of such models.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	2bb6
authors	Van Bakergem, Dave
year	1990
title	Image Collections in the Design Studio
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 261-271
summary	No matter what the medium, architects are constantly using images in all aspects of design thinking. Whether it is the perception of the environment, an image in the mind's eye, an abstract drawing or a photographic record, designers use images to conceive of, and manipulate their design ideas. Managing these image collections occurs at a variety of levels in the creative process and is dependent on the type of image that is called upon for reference. The most basic example would be the image collection residing in the mind's memory which is a result of the designer’s world experiences and the relative impressiveness of each experience. Clearly, personal memory plays a significant role in the use of imagery in design, but it is unreliable and can be abstracted in uncontrollable ways. The sketchbook and later photographic collections of the grand tour were the beginnings of efforts to manage and utilize image collections as an aid to drawing and thinking about design. Now the capacity to use electronic means of creating, altering, storing, and retrieving images will enable designers to effectively use large image collections in ways that have not been possible before. This paper describes current work at the School of Architecture at Washington University in a graduate design studio. The students use a powerful 3D modeling CAD system (HOKDraw) to design and present their studio projects. In addition, we are experimenting with an image storage and retrieval system which is directly linked to the CAD model through a relational database (INGRES). Access to the database and images is instantly available through the command language and graphic display. The CAD model in effect becomes a 3D menu to an extensive image database stored on an optical memory disc recorder. Several collections are available to the studio members: the library's slide collection which relates to the studio project, specific photographs and drawings of the project site, and personal image collections stored by individuals for their own reference. The commonly accessible images are basically background material and images collected by the students to document the site, urban context and building typology. The personal images collections are any images (drawings, photographs, published images, CAD images) created or collected by the students for purposes of informing their design thinking. This work relates to the use of precedents and typology in architecture as a point of departure as well as in development of design ideas.
series	CAAD Futures
last changed	1999/04/03 17:58

_id	a682
authors	Wong, P.C.
year	1989
title	EXPAN--An Integrated System for the Generation of Prefabricated Panel Wall Layout Design
source	Department of Architectural Science, University of Sydney
summary	This thesis develops an integrated system to demonstrate the capabilities of those systems in aiding preliminary design. An existing CAD system, the Eagle modeling system, is used to control the graphic generation of the preliminary design. Some knowledge is written in a macro language conforming to the Eagle syntax requirements. An expert system shell written in C, the EXBUILD expert system shell, is used to control the expert system. The knowledge used by the expert system is written in production rules and frames conforming to the EXBUILD syntax requirements. The control over the whole system is primarily through Eagle with the integrated system running within the Eagle environment.
keywords	Automation; Integration; Expert Systems; Applications; Prefabrication
series	thesis:MSc
last changed	2002/12/14 19:14

_id	a672
authors	Flemming, Ulrich
year	1990
title	Syntactic Structures in Architecture: Teaching Composition with Computer Assistance
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 31-48
summary	The present paper outlines a plan for the teaching of architectural composition with computer assistance.The approach is to introduce students to a series of architectural languages characterized by a vocabulary of elements and a grammar whose rules indicate how these elements can be placed in space. Exercises with each language include the analysis of precedents; the generation of forms using a given rule set; and follow-up studies with an expanded rule set. The paper introduces languages and exercises through illustrative examples. This architectural content can be taught in the traditional way. The use of computers is motivated by expectations which are stated, and some basic requirements for the needed software are listed. Work to develop this software has started.
series	CAAD Futures
email
last changed	2003/02/26 17:24

_id	cdd3
authors	Mitchell, William J.
year	1990
title	A New Agenda For Computer-Aided Design
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 1-16
summary	Design is the computation of shape information that is needed to guide fabrication or construction of an artifact. This information normally specifies artifact topology (connections of vertices, edges, surfaces, and closed volumes), dimensions, angles, and tolerances on dimensions and angles. There may also be associations of symbols with subshapes to specify material and other such properties. The process of design takes different forms in different contexts, but the most usual computational operations are transformations (unary operations) and combinations (binary operations) of shapes in a two-dimensional drawing or a three-dimensional geometric model. An initial vocabulary of shapes, together with a repertoire of shape transformation and combination operators., establishes the shape algebra within which the computation takes place. The computation terminates successfully when it can be shown that certain predicates are satisfied by a shape produced by recursively applying the transformation and combination operators to the initial vocabulary. These predicates are usually stated in symbolic (verbal or numerical) form. Thus determination of whether a predicate is satisfied usually involves producing a numerical or verbal interpretation of a drawing, then deriving inferences from this interpretation by applying rules or formulae.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	4032
authors	Barron, Christopher L.
year	1989
title	3-D Modelling
source	architectural and Engineering Systems. April, 1989. [41] -56 unevenly numbered
summary	From screen to structure, more and more AEs are finding design solutions in the third dimension. The author reviews current 3-D modeling systems, what are the expectations of the users and the developers goals
keywords	architecture, practice, drafting, modeling, systems
series	CADline
last changed	2003/06/02 13:58

_id	600f
authors	Cortes, Chaves Camila
year	1989
title	Design Software of the '90s
source	Architectural and Engineering Systems. July, 1989. vol. 5: pp. 30
summary	The design firm of the '90s will have the ability to use the right tool for the right task, permitting tailored resources to be used more effectively. This mean portable, modular and multiuser software running on machines specifically designed for a particular environment with the option to tap other sources. Designers will enter the 21st century using integrated design knowledge-based support systems with knowledge-based inferencing systems, information management systems for text and graphics, a CAD/modeling package, and a flexible user interface with speech recognition, eye tracking and manual input device. Some of these are discussed in this article
keywords	practice, construction, systems, software, integration
series	CADline
last changed	1999/02/12 15:07

_id	ee16
authors	Coyne, R.D., Newton, S. and Sudweeks, F.
year	1989
title	Modeling the Emergence of Schemas in Design Reasoning
source	Design Computing Unit, Department of Architectural and Design Science, University of Sydney, 1989. pp. 173-205. CADLINE has abstract only
summary	The authors explore how neural networks can be used to model important aspects of design reasoning: the way design involves memory; and a 'holistic' kind of reasoning by which designs appear to emerge from that memory. A simple neural network is constructed to demonstrate how information about schemas (in this case, room types) is stored implicitly after exposure to a number of examples of specific rooms. We then demonstrate how new room types emerge from this information. The paper includes a discussion of design, a discussion of schemas from a psycholinguistic perspective, a technical explanation of neural networks and the demonstration of an implemented examples
keywords	neural networks, modeling, design, reasoning, learning, knowledge acquisition, experimentation
series	CADline
email
last changed	2003/05/17 10:13

_id	8bdf
authors	Crocker, Gary A. and Reinke, William F.
year	1989
title	Boundary Evaluation in a Non-Manifold Environment
source	November, 1989. 30 p., [16] p. of ill. includes bibliography
summary	The recent availability of Non-Manifold Topology (NMT) enables the coexistence of wireframe geometry, surfaces, and solids in a single representation with complete topological resolution. This in turn allows a new approach to boundary evaluation. This new approach merges a set of primitives into a single Boundary REPresentation (B-rep), and selects the desired Boolean results without destroying any B-rep entities. The results of the Boolean operations are displayed by drawing only selected entities. The B-rep resulting from the merge contains a complete description of the input primitives. While traditional algorithms allow incremental addition of primitives, this new approach also allows incremental deletion of primitives from the merged B-rep. Changes in Boolean operators and/or their order of evaluation can be reflected in the B-rep simply by changing the criteria of the selection process. Constructive Solid Geometry (CSG) editing operations can be mirrored in the B-rep incrementally, i.e. without performing complete reevaluation of the B-rep from its constituent primitive definitions. In addition, the domain of boundary evaluation has been extended to include Boolean operations between wireframe geometry, surfaces, and solids. This new approach has been successfully implemented and tested to boundary evaluation. Test results have shown an order of magnitude reduction in the cost associated with reflecting CSG editing operations on existing B-reps, with only minimal additional cost for initial construction. Also shown are examples of Boolean operations between solids, surfaces, and wires
keywords	computational geometry, boolean operations, solid modeling, B-rep, CSG, representation, topology, curved surfaces, intersection, curves,
series	CADline
last changed	2003/06/02 13:58

_id	09a5
authors	Eastman, Charles M.
year	1989
title	Building Modeling in Architectural Design
source	[8] p. : ill. Design & Computation . Los Angeles: Graduate School of Architecture and Urban Planning, UCLA, 1989? includes bibliography
summary	This paper reviews building modeling from the perspective of U.S. architectural practice. During the previous twenty years of computer-aided architectural design, the underlying paradigm has mimicked a paper-based technology. The future of design, however, is proposed to be in building modeling. A review of building modeling is provided and some prospects for architectural design, based on its concepts, are proposed
keywords	CAD, building, modeling, architecture, design
series	CADline
email
last changed	2003/05/17 10:15

_id	0642
authors	Eastman, Charles M.
year	1989
title	Why Are We Here and Where We are Going: The Evolution of CAD
source	New Ideas and Directions for the 1990’s [ACADIA Conference Proceedings] Gainsville (Florida - USA) 27-29 October 1989, pp. 9-26
doi	https://doi.org/10.52842/conf.acadia.1989.009
summary	This paper reviews architectural CAD in terms of its current use, development and status within the U.S. The characteristics of a new generation of architectural CAD system, called building modeling, are outlined. Criteria are developed for the evaluation of CAD systems that support building modeling. Some of the opportunities for universities growing out of building modeling are reviewed, including pedagogical implications and opportunities for research.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	e3c7
authors	Galle, Per
year	1989
title	Computer Methods in Architectural Problem Solving: Critique and Proposals
source	CAAD: Education - Research and Practice [eCAADe Conference Proceedings / ISBN 87-982875-2-4] Aarhus (Denmark) 21-23 September 1989, pp. 6.4.1-6.4.21
doi	https://doi.org/10.52842/conf.ecaade.1989.x.t9u
summary	While the development of modeling and drafting tools for computer-aided design has reached a state of considerable maturity, computerized decision support in architectural sketch design is still in its infancy after more than 20 years. The paper analyzes the difficulties of developing computer tools for architectural problem solving in the early stages of design where decisions of major importance are made. The potentials of computer methods are discussed in relation to design as a static system of information and to design as a dynamic creative process. Two key problems are identified, and on this background current computer methods intended for use in architectural sketch design are critically reviewed. As a result some guidelines are suggested for future research into computer- aided architectural problem solving. The purpose of the paper is twofold: (1) to encourage research that will take this field into a state of maturity and acceptance by practitioners, and (2) to provoke further debate on the question of how to do it.
series	eCAADe
last changed	2022/06/07 07:50

_id	abd8
authors	Gero, John S. (editor)
year	1989
title	Artificial Intelligence in Design
source	553 p. Southampton and Berlin: CMP/Springer-Verlag, 1989 CADLINE has abstract only.
summary	This volume contains the selected papers in the design stream from the Fourth International Conference on Applications of Artificial Intelligence in Engineering. The 26 papers are grouped under the following headings: Structural Design; Mechanical Design; Architectural Design; Qualitative Reasoning in Design; Design Research Groups; Constraint-Based Systems in Design; Design Modeling; and Processes in Design
keywords	AI, design, architecture, mechanical engineering, civil engineering, reasoning, modeling, constraints
series	CADline
email
last changed	2003/06/02 13:58

_id	4f00
authors	Gero, John S. and Sudweeks, F. (editors)
year	1989
title	Expert Systems in Engineering, Architecture and Construction
source	360 p University of Sydney: 1989. CADLINE has abstract only.
summary	Engineering involves both cognitive and calculational processes. It involves judgement as well as numeracy. Cognitive processes and judgement are better served by expert systems than other existing technologies. Expert systems are not designed to replace technologies currently used in engineering, rather they are and will continue to augment them. Clearly, better tools are needed and further education of engineers is needed. This conference aims to provide a forum for the presentation of developments and applications of expert systems in engineering, primarily in Australasia. The 20 papers accepted for presentation span the spectrum of engineering applications of expert systems from analysis and diagnosis, through simulation and modeling, learning, to design and synthesis
keywords	expert systems, knowledge base, design process, architecture, structures, engineering, construction, analysis, simulation, modeling, learning, synthesis
series	CADline
email
last changed	2003/06/02 13:58

_id	ab63
authors	Gross, Mark D.
year	1990
title	Relational Modeling: A Basis for Computer-Assisted Design
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 123-136
summary	Today's computer assisted design (CAD) systems automate traditional ways of working with tracing paper and pencil, but they cannot represent the rules and relationships of a design. As hardware becomes faster and memory less expensive, more sophisticated fundamental software technologies will be adopted. This shift in the basis of CAD will provide powerful capabilities and offer new ways to think about designing. Recently parametric design, a technique for describing a large class of designs with a small description in code, has become a focus of attention in architectural computing. In parametric CAD systems, design features are identified and keyed to a number of input variables. Changes in the input values result in variations of the basic design. Based on conventional software technologies, parametric design has been successfully applied in many design domains including architecture and is supported by several commercial CAD packages. A weakness of parametric techniques is the need to predetermine which properties are input parameters to be varied and which are to be derived. Relational modeling is a simple and powerful extension of parametric design that overcomes this weakness. By viewing relations as reversible rather than one-way, any set of properties can be chosen as input parameters. For example, a relational model that calculates the shadow length of a given building can also be used to calculate the building height given a desired shadow length. In exercising a relational model the designer is not limited to a pre-selected set of input variables but can explore and experiment freely with changes in all parts of the model. Co is a relational modeling environment under development on the Macintosh-II computer, and Co-Draw, a prototype CAD program based on Co. Co's relationaI engine and object-oriented database provide a powerful basis for modeling design relations. Co-Draw's interactive graphics offer a flexible medium for design exploration. Co provides tools for viewing and editing design models in various representations, including spreadsheet cards, tree and graph structures, as well as plan and elevation graphics. Co's concepts and architecture are described and the implications for design education are discussed.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	20a1
authors	Hall, R.
year	1989
title	Illumination and Color in Computer Generated Imagery
source	New York: Springer Verlag
summary	This is a discussion of the physics of illumination and the associated techniques for modeling global and local illumination in computer generated imagery. It was state-of-the-art in 1988, but is now rather outdated. It does include discussions of physics and color theory basics that have not changed, and a discussion of illumination models through ray tracing models using various specular reflectance functions and including Fresnel effects. This text is currently out of print. However, we still receive numerous requests for an electronic version of the source code in the book.
series	other
last changed	2003/04/23 15:14

_id	5fe7
authors	Hoffmann C.M.
year	1989
title	Geometric and Solid Modeling
source	Morgan Kaufmann
summary	Solid modeling is rapidly emerging as a central area of research and de- velopment in such diverse applications as engineering and product design, computer-aided manufacturing, electronic prototyping, o -line robot pro- gramming, and motion planning. All these applications require represent- ing the shapes of solid physical objects, and such representations and basic operations on them can be provided by solid modeling. As a eld, solid modeling spans several disciplines, including mathemat- ics, computer science, and engineering. In consequence, it is a broad subject that must accommodate a diversity of viewpoints and has to meet a diversity of goals. Sometimes, this diversity of goals can lead to con icting demands. Current thinking on the subject views the proper resolution of these con- icts to be application-dependent. That is, it is no longer thought realistic to envision a comprehensive solid-modeling system that satis es the needs of all potential users. Rather, as it is argued, we should concentrate on con- structing a software environment in which many tools for geometric and solid computation are available and can be combined with ease as appropriate for the speci c application under consideration.
series	other
last changed	2003/04/23 15:14

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