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 696c
authors Beheshti, M. and Monroy, M.
year 1988
title Requirements for Developing an Information System for Architecture
source CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 149-170
summary This paper discusses possibilities of developing new tools for architectural design. It argues that architects should meet the challenge of information technology and computer-based design techniques. One such attempt has been the first phase of the development of an architectural design information system (ADIS), also an architectural design decision support system. The system should benefit from the developments of the artificial intelligence to enable the architect to have access to information required to carry out design work. In other words: the system functions as a huge on-line electronic library of architecture, containing up-to-date architectural design information, literature, documents, etc. At the same time, the system offers necessary design aids such as computer programs for design process, drawing programs, evaluation programs, cost calculation programs, etc. The system also provides data communication between the architect and members of the design coalition team. This is found to be of vital importance in the architectural design process, because it can enable the architect to fit in changes, brought about in the project by different parties. Furthermore, they will be able, to oversee promptly the consequences of changes or decisions in a comprehensive manner. The system will offer advantages over the more commonly applied microcomputer based CAAD and IGDM (integrated graphics database management) systems, or even larger systems available to an architect. Computer programs as well as hardware change rapidly and become obsolete. Therefore, unrelenting investment pressure to up-date both software and hardware exists. The financial burden of this is heavy, in particular for smaller architectural practices (for instance an architect working for himself or herself and usually with few or no permanent staff). ADIS, as an on-line architectural design aid, is constantly up-dated by its own organisation. This task will be co-ordinated by the ADIS data- base administrator (DBA). The processing possibilities of the system are faster, therefore more complex processing tasks can be handled. Complicated large graphic data files, can be easily retrieved and manipulated by ADIS, a large system. In addition, the cost of an on-line system will be much less than any other system. The system is based on one model of the architectural design process, but will eventually contain a variety of design models, as it develops. The development of the system will be an evolutionary process, making use of its users' feed-back system. ADIS is seen as a step towards full automation of architectural design practices. Apart from being an architectural design support system, ADIS will assist the architect in his/her administrative and organisational activities.
series CAAD Futures
last changed 2003/11/21 15:16

_id 21d1
authors Blinn, James F.
year 1987
title How Many Ways Can You Draw a Circle?
source IEEE Computer Graphics and Applications. August, 1987. vol. 7: pp. 39-65
summary This is a first in a series of columns on computer graphics. In this column the author discusses the different algorithms one can find for drawing circles. The algorithms collection can be categorized by the two types of output: line endpoints or pixel coordinates. This comes from the general dichotomy of curve representation - parametric vs. algebraic. The language used is a mishmash of several programming constructs
keywords drafting, circles, algorithms, programming, techniques
series CADline
last changed 2003/06/02 13:58

_id a1a1
authors Cornick, T. and Bull, S.
year 1988
title Expert Systems for Detail Design in Building
source CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 117-126
summary Computer-Aided Architectural Design (CAAD) requires detailed knowledge of the construction of building elements to be effective as a complete design aid. Knowledge-based systems provide the tools for both encapsulating the "rules" of construction - i.e. the knowledge of good construction practice gained from experience - and relating those rules to geometric representation of building spaces and elements. The "rules" of construction are based upon the production and performance implications of building elements and how these satisfy various functional criteria. These building elements in turn may be related to construction materials, components and component assemblies. This paper presents two prototype knowledge-based systems, one dealing with the external envelope and the other with the internal space division of buildings. Each is "component specific" and is based upon its own model of the overall construction. This paper argues that "CAAD requires component specific knowledge bases and that integration of these knowledge bases into a knowledge-based design system for complete buildings can only occur if every knowledge base relates to a single coordinated construction model".
series CAAD Futures
last changed 1999/04/03 17:58

_id 68cb
authors Fenves, Stephen J. and Baker, Nelson C.
year 1987
title Spatial and Functional Representation Language for Structural Design
source 21 p. : ill. Pittsburgh: Engineering Design Research Center, CMU, December, 1987. includes bibliography
summary Knowledge-based systems for structural design developed to date have used simple geometric representations which have not provided adequate spatial reasoning. Shape grammars are suggested as a representation for a knowledge-based system capable of performing spatial and functional reasoning. The representation needs to serve all disciplines involved in the design process, where different semantics of each discipline are associated with the same spatial information about design objects. The representation is demonstrated in the building design environment, where possible structural systems can be generated dependent upon the building's spatial layout
keywords representation, shape grammars, structures, design, problem solving, planning, civil engineering, architecture
series CADline
last changed 2003/06/02 10:24

_id afd5
authors Jog, Bharati
year 1987
title An Interface Between CAD and Energy Analysis System
doi https://doi.org/10.52842/conf.acadia.1987.087
source Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 87-94
summary During the architectural design process it is helpful to get the energy analysis at various steps. Using the knowledge obtained from energy analysis programs, a design can be improved during the next step. Today Computer-Aided Drafting packages are popular as drafting tools in the architecture profession and schools. Many software packages for energy analysis are also available. To promote such analytical design process, there is a need to develop interfaces between energy analysis systems and Computer- Aided Drafting packages to get the energy analysis using the drawing files. This paper describes the use of the interface between Computer-Aided Drafting system and energy analysis program as an analytical tool in the Computer-Aided Design process. Then it presents an interface developed between AutoCAD, a popular Computer-Aided Drafting tool, and CALPAS3, an energy analysis program.

series ACADIA
last changed 2022/06/07 07:52

_id 21b9
authors Landsdown, J.
year 1988
title Computers and Visualisation of Design Ideas: Possibilities and Promises
source CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 71-80
summary Drawing in all its various forms, from freehand sketching to detailed technical layout, is a type of modelling that designers find indispensable. In many cases, indeed, drawing is the only form of external modelling a designer uses. It has two basic functions: to assist in the externalisation and development of mental concepts and to help in the presentation of these concepts to others. The current thrust of work in computer graphics - although valuable - tends to concentrate almost exclusively on the presentation aspects and it is now possible to create images almost resembling photographs of real objects as well as production drawings of great accuracy and consistency. This paper summarises some of this presentation work as well as developments which might go further in assisting the activities and processes of design.
series CAAD Futures
last changed 1999/04/03 17:58

_id c7e0
id c7e0
authors Maria Gabriela Caffarena Celani
year 2002
title BEYOND ANALYSIS AND REPRESENTATION IN CAD: A NEW COMPUTATIONAL APPROACH TO DESIGN EDUCATION
source Submitted to the Department of Architecture in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the field of Architecture: Design & Computation at the Massachusetts Institute of Technology
summary This thesis aims at changing students' attitude towards the use of computer-aided design (CAD) in architecture. It starts from the premise that CAD is used mostly for analysis and representation, and not as a real design aide, and that architecture students have a bias against learning computer programming. For this purpose, a prototypical instruction system that mixes computer-aided design and computational design theory was developed, based on a series of fundamental concepts that are common to both fields. This system was influenced by Mitchell's (1987) The Art of Computer Graphics Programming and Stiny's (1976) shape grammars. Despite being based on solid theoretical foundations, CAD has progressively become an exclusively practical tool, since its origins in the 50's and 60's, while computational design theories have been mostly restricted to the academic circles. This thesis proposes an inversion in the present situation: the study of CAD theory, and the application of computational design into practice. The system proposed provides a conceptual framework that can be adapted to different circumstances, including course formats and resources, as well as students' background and technical training. It is based on seven fundamental concepts from computational design theories that are also important to the study of shape grammars: symmetry, recursion, rule-based compositions, parameterization of shapes, generative systems, algorithmization of design procedures, and shape emergence. These concepts are introduced within a CAD context, where their practical implementation and experimentation are possible, focusing the understanding of the computational nature of design. During this research, the proposed system was tested in two case studies with students from schools that had contrary orientations in terms of the importance of CAD in the architectural curriculum. In these experimental courses, students' activities evolved from using a commercial CAD tool in an innovative way, to the use of programming techniques for creating meaningful tools. Despite not having a statistical reach, the fieldwork allowed drawing preliminary conclusions about the proposed system's efficacy, since virtually all the students reported changing their understanding of the role of CAD in architecture, while some also acknowledged a conceptual influence in other subjects and in the way they see architecture.
keywords Symmetry
series thesis:PhD
type normal paper
email
more http://www.fec.unicamp.br/~celani/
last changed 2004/11/17 20:51

_id ed0f
authors Moshe, R. and Shaviv, E.
year 1988
title Natural Language Interface for CAAD System
source CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 137-148
summary This work explores issues involved in the development of a natural interface for man-machine dialogue in architectural design processes. A hand-touch on an interactive surface is suggested as the best natural-language interface for architectural CAD systems. To allow the development of a rich range of hand-touch natural-language for communicating information and commands to the computer, it is proposed to develop a new type of a touch-panel, for which a set of specifications is presented. A conceptual design of an architectural workstation, having the described touch-panel, is presented. This workstation is characterized by the integration of the entire range of control and communication facilities required for any architectural task into a single interactive unit. The conceptual model for this workstation is the standard size drawing board, on which the architect is accustomed to spread documents, drawings, books and tools, shuffle them around and interchange them freely by using the natural-language interface developed in this work. The potential of the suggested hand-touch natural-language and the proposed workstation are demonstrated by a case-study.
series CAAD Futures
email
last changed 2003/05/16 20:58

_id 404e
authors Oksala , T.
year 1988
title Logical Models for Rule-based CAAD
source CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 107-116
summary The aim of this paper is to present the basic results of a theoretic approach to represent architectural individual forms in CAD systems. From the point of view of design methodology and problem solving these descriptions might be conceived' as parts of possible environments satisfying the laws of some design theory in logical sense. This paper describes results in a series of logical studies towards rule and knowledge based systems for design automation. The effective use of programming languages and computers as design aids in architecture presupposes certain capabilities to articulate built environment logically. The use of graphic languages in the description of environmental items e.g. buildings might be theoretically mastered by formal production systems including linguistic, geometric, and spatio-material generation. The combination of the power of formal mechanisms and logical individual calculus offers suitable framework to generate arbitrary e.g. free spatial compositions as types or unique solutions. In this frame it is natural to represent in a coherent way very complex hierarchical parsing of buildings in explicit form as needed in computer implementations. In order to simulate real design work the individual configurations of possible built forms should be designed to satisfy known rules. In the preliminary stage partial solutions to design problems may be discussed in mathematical terms using frameworks like lattices, graphs, or group theoretical considerations of structural, functional, and visual organization of buildings. The capability to produce mathematically sophisticated geometric structures allows us to generalize the approach further. The theoretical design knowhow in architecture can be partly translated in to some logic and represented in a knowledge base. These rules are used as selection criteria for geometric design candidates in the sense of logical model theory and mathematical optimization. The economy of the system can be developed by using suitable conduct mechanisms familiar e.g. from logic programming. The semantics of logic offers a frame to consider computer assisted and formal generation in design. A number of semantic and pragmatic problems, however, remain to be solved. In any case conceptual analyses based on logic are applicable in order to rationally reconstruct architectural goals contributing to the quality of environmental design, which should be the main goal in the development of design systems in near future.
series CAAD Futures
last changed 1999/04/03 17:58

_id 0e42
authors Rouse, W., Geddes, N. and Curry, R.
year 1998
title An Architecture for Intelligent Interfaces: Outline of an Approach to Supporting Operators of Complex Systems Articles
source Human-Computer Interaction 1987-1988 v.3 n.2 pp. 87-122
summary The conceptual design of a comprehensive support system for operators of complex systems is presented. Key functions within the support system architecture include information management, error monitoring, and adaptive aiding. One of the central knowledge sources underlying this functionality is an operator model that involves a combination of algorithmic and symbolic models for assessing and predicting an operator's activities, awareness, intentions, resources, and performance. Functional block diagrams are presented for the overall architecture as well as the key elements within this architecture. A variety of difficult design issues are discussed, and ongoing efforts aimed at resolving these issues are noted.
series other
last changed 2002/07/07 16:01

_id 831d
authors Seebohm, Thomas
year 1992
title Discoursing on Urban History Through Structured Typologies
doi https://doi.org/10.52842/conf.acadia.1992.157
source Mission - Method - Madness [ACADIA Conference Proceedings / ISBN 1-880250-01-2] 1992, pp. 157-175
summary How can urban history be studied with the aid of three-dimensional computer modeling? One way is to model known cities at various times in history, using historical records as sources of data. While such studies greatly enhance the understanding of the form and structure of specific cities at specific points in time, it is questionable whether such studies actually provide a true understanding of history. It can be argued that they do not because such studies only show a record of one of many possible courses of action at various moments in time. To gain a true understanding of urban history one has to place oneself back in historical time to consider all of the possible courses of action which were open in the light of the then current situation of the city, to act upon a possible course of action and to view the consequences in the physical form of the city. Only such an understanding of urban history can transcend the memory of the actual and hence the behavior of the possible. Moreover, only such an understanding can overcome the limitations of historical relativism, which contends that historical fact is of value only in historical context, with the realization, due to Benedetto Croce and echoed by Rudolf Bultmann, that the horizon of "'deeper understanding" lies in "'the actuality of decision"' (Seebohm and van Pelt 1990).

One cannot conduct such studies on real cities except, perhaps, as a point of departure at some specific point in time to provide an initial layout for a city knowing that future forms derived by the studies will diverge from that recorded in history. An entirely imaginary city is therefore chosen. Although the components of this city at the level of individual buildings are taken from known cities in history, this choice does not preclude alternative forms of the city. To some degree, building types are invariants and, as argued in the Appendix, so are the urban typologies into which they may be grouped. In this imaginary city students of urban history play the role of citizens or groups of citizens. As they defend their interests and make concessions, while interacting with each other in their respective roles, they determine the nature of the city as it evolves through the major periods of Western urban history in the form of threedimensional computer models.

My colleague R.J. van Pelt and I presented this approach to the study of urban history previously at ACADIA (Seebohm and van Pelt 1990). Yet we did not pay sufficient attention to the manner in which such urban models should be structured and how the efforts of the participants should be coordinated. In the following sections I therefore review what the requirements are for three-dimensional modeling to support studies in urban history as outlined both from the viewpoint of file structure of the models and other viewpoints which have bearing on this structure. Three alternative software schemes of progressively increasing complexity are then discussed with regard to their ability to satisfy these requirements. This comparative study of software alternatives and their corresponding file structures justifies the present choice of structure in relation to the simpler and better known generic alternatives which do not have the necessary flexibility for structuring the urban model. Such flexibility means, of course, that in the first instance the modeling software is more timeconsuming to learn than a simple point and click package in accord with the now established axiom that ease of learning software tools is inversely related to the functional power of the tools. (Smith 1987).

series ACADIA
email
last changed 2022/06/07 07:56

_id 0a09
authors Akin, O., Dave, B. and Pithavadian, S.
year 1987
title Problem Structuring in Architectural Design
source February, 1987. [4], 15 p. : ill. includes bibliography
summary The purpose of this research is to describe in operational terms the process of problem structuring while solving spatial problems in architectural design. The designer's behavior is described in terms of problem structuring, when problem parameters are established or transformed, and in terms of problem solving when these parameters are satisfied in a design solution. As opposed to problem solving, the structuring of problems is an under-studied but crucial aspect of complex tasks such as design. This work is based on observations derived from verbal protocol studies. To consider various levels of skill, the research subjects range from professional architects to novice designers. Subjects are given space planning problems which require them to develop solutions in accordance with individually established constraints and criteria, the majority of which are not explicit stated in the problem description. Based on the results of the protocol analysis, a framework is developed which explains how information processing characteristics, problem structure and different levels of expertise interact to influence the designer behavior
keywords architecture, design process, problem solving, protocol analysis, problem definition
series CADline
email
last changed 2003/05/17 10:09

_id ae05
authors Akin, Omer
year 1987
title Expertise of the Architect
source November, 1987. [13] p. unevenly numbered : ill. includes bibliography
summary One of the areas where the expertise of the seasoned architect comes out is in the initial structuring of design problems. During problem structuring the parameters and processes used in design are defined. Experienced architects modify these parameters both in global and local levels as a function of the success of their research process. Experienced architects also rely on 'scenarios' acquired through pervious experiences with similar problems to initialize their problem structures or to redefined them
keywords design, architecture, methods
series CADline
email
last changed 2003/05/17 10:09

_id eb5f
authors Al-Sallal, Khaled A. and Degelman, Larry 0.
year 1994
title A Hypermedia Model for Supporting Energy Design in Buildings
doi https://doi.org/10.52842/conf.acadia.1994.039
source Reconnecting [ACADIA Conference Proceedings / ISBN 1-880250-03-9] Washington University (Saint Louis / USA) 1994, pp. 39-49
summary Several studies have discussed the limitations of the available CAAD tools and have proposed solutions [Brown and Novitski 1987, Brown 1990, Degelman and Kim 1988, Schuman et al 1988]. The lack of integration between the different tasks that these programs address and the design process is a major problem. Schuman et al [1988] argued that in architectural design many issues must be considered simultaneously before the synthesis of a final product can take place. Studies by Brown and Novitski [1987] and Brown [1990] discussed the difficulties involved with integrating technical considerations in the creative architectural process. One aspect of the problem is the neglect of technical factors during the initial phase of the design that, as the authors argued, results from changing the work environment and the laborious nature of the design process. Many of the current programs require the user to input a great deal of numerical values that are needed for the energy analysis. Although there are some programs that attempt to assist the user by setting default values, these programs distract the user with their extensive arrays of data. The appropriate design tool is the one that helps the user to easily view the principal components of the building design and specify their behaviors and interactions. Data abstraction and information parsimony are the key concepts in developing a successful design tool. Three different approaches for developing an appropriate CAAD tool were found in the literature. Although there are several similarities among them, each is unique in solving certain aspects of the problem. Brown and Novitski [1987] emphasize the learning factor of the tool as well as its highly graphical user interface. Degelman and Kim [1988] emphasize knowledge acquisition and the provision of simulation modules. The Windows and Daylighting Group of Lawrence Berkeley Laboratory (LBL) emphasizes the dynamic structuring of information, the intelligent linking of data, the integrity of the different issues of design and the design process, and the extensive use of images [Schuman et al 19881, these attributes incidentally define the word hypermedia. The LBL model, which uses hypermedia, seems to be the more promising direction for this type of research. However, there is still a need to establish a new model that integrates all aspects of the problem. The areas in which the present research departs from the LBL model can be listed as follows: it acknowledges the necessity of regarding the user as the center of the CAAD tool design, it develops a model that is based on one of the high level theories of human-computer interaction, and it develops a prototype tool that conforms to the model.

series ACADIA
email
last changed 2022/06/07 07:54

_id sigradi2013_234
id sigradi2013_234
authors Alencar, Viviane; Gabriela Celani
year 2013
title The Art of Computer Graphics Programming: Translating Pioneer Programs
source SIGraDi 2013 [Proceedings of the 17th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Chile - Valparaíso 20 - 22 November 2013, pp. 500 - 504
summary Considering the importance of the use of programming languages for teaching computational design to architects, this paper proposes the translation of computer programs from a pioneer work in this field into a more contemporary programming language. The book The Art of Computer Graphics Programming: A Structured Introduction for Architects and Designers was published in 1987 by William J. Mitchell, Robin Ligget and Thomas Kvan, and remains an important reference for architects. The original Pascal codes in the book were translated into Processing, and made available through an Internet website, along with images and comments, in order to give late Prof. Mitchell’s work the consideration it deserves.
keywords Processing; Pascal; Computer graphics
series SIGRADI
email
last changed 2016/03/10 09:47

_id 4d3b
authors Archea, John
year 1987
title Puzzle-Making : What Architects Do When No One is Looking
source New York: Wiley-Interscience, 1987. pp. 37-52. includes bibliography
summary The thesis of this paper is that architects work in a manner that is antithetical to problem-solving because they cannot explicate desired effects prior to their realization through the design process. In an attempt to clarify architecture's uncommon mode of action the author suggests that instead of specifying what they are trying to accomplish prior to their attempts to accomplish it as problem-solver do, architects treat design as a search for the most appropriate effects that can be attained in a unique context. They seek sets of combinatorial rules that will result in an internally consistent fit between a kit of parts and the effects that are achieved when those parts are assembled in a certain way
keywords puzzle making, problem solving, architecture, design process
series CADline
last changed 1999/02/12 15:07

_id e820
authors Armstrong, W.W., Green, M. and Lake, R.
year 1987
title Near- Real-Time Control of Human Figure Models
source IEEE Computer Graphics and Applications. June, 1987. vol. 7: pp. 52-60 : ill
summary Includes bibliography. Animating human figures is one of the major problems in computer animation. A recent approach is the use of dynamic analysis to compute the movement of a human figure, given the forces and torques operating within and upon the body. One of the problems with this technique is computing the forces and torques required for particular motions: this has been called the control problem of dynamic analysis. To develop a better understanding of this problem, an interactive interface to a dynamics package has been produced. This interface, along with a collection of low-level motion processes, can be used to control the motion of a human figure model. This article describes both the user interface and the motion processes, along with experiences with this approach
keywords computer graphics, animation, user interface
series CADline
last changed 2003/06/02 14:41

_id 8eb4
authors Athithan, G. and Patnaik, L.M.
year 1987
title Geometric Searching In Extended CSG Models : Application to Solid Modeling and Viewing
source February, 1987. 30 p. : ill
summary In this paper, the CSG representation scheme is augmented with the 'cartesian product.' The sweep method of generating solids is encompassed by this 'Extended CSG' formalism. The point inclusion problem encountered in the area of geometric searching in computational geometry is discussed in the context to solid models represented by 'extended CSG.' A simple algorithm to solve it that has a time complexity O(n), where n is the number of primitives, is presented. Allowing for preprocessing and extra storage, a second efficient algorithm, having a time complexity O(log n), is developed. The relevance of point inclusion problem in solid modelling techniques is indicated. An extended CSG based solid modeling method is proposed. A solution to the problem of hidden line removal, that uses the faster algorithm for the point inclusion problem, is also presented in the paper
keywords point inclusion, computational geometry, data structures, solid modeling, CSG, computer graphics, hidden lines
series CADline
last changed 2003/06/02 14:41

_id 266d
authors Badler, Norman I., Manoochehri, Kamran H. and Walters, Graham
year 1987
title Articulated Figure Positioning by Multiple Constraints
source IEEE Computer Graphics and Applications. June, 1987. vol. 7: pp. 28-38 : ill. Includes bibliography
summary A problem that arises in positioning an articulated figures is the solution of 3D joint positions (kinematics), when joint angles are given. If more than one such goal is to be achieved, the problem is often solved interactively by positioning or solving one component of the linkage, then adjusting another, then redoing the first, and so on. This iterative process is slow and tedious. The authors present a method that automatically solves multiple simultaneous joint position goals. The user interface offers a six-degree-of freedom input device to specify joint angles and goal positions interactively. Examples are used to demonstrate the power and efficiency of this method for key-position animation
keywords animation, constraints, computer graphics
series CADline
last changed 2003/06/02 13:58

_id a60d
authors Bairstow, Jeffrey N.
year 1987
title Personal Workstations Redefine Desktop Computing
source high Technology. March, 1987. pp. 18-23 : ill. includes bibliography: p. 64
summary Becoming an essential tool in any creative activity, the personal workstations were successfully adopted by software developers for designing both system and application software, by electronics engineers for computer-aided design, and by a wide range of businesses for technical publishing. The rapid adoption of networking and file standards by the workstation manufacturers will undoubtedly put them in a good position to install large networks of both PCs and workstations linked to existing corporate mainframe computers
keywords hardware, technology, business
series CADline
last changed 2003/06/02 13:58

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