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 27f4
authors Holtz, Neal M. and Rasdorf, William J.
year 1983
title LISP - A CAD System Programming Language
source Journal of Technical Topics in Civil Engineers. April, 1983. vol. 109: pp. 58-72
summary LISP may currently be the best programming language to use for the development of engineering computer-aided design (CAD) systems. While languages like FORTRAN represent important advances over their predecessors, it may be that a single static programming language will never be completely adequate for engineering programming. What is needed is a language that can evolve in response to changing needs. This paper is concerned with the programming languages that support CAD systems. The choice of such a programming language significantly influences the flavor of the product derived from that language. The language should provide a style of interaction and a programming environment that is a good model for software developers. At the very least, this will lead to a consistency among most programs developed using that language. The language should also help reduce program complexity and permit one to program at the level of application concepts, rather than at the level of memory locations. LISP or LISP-like languages provide perhaps our greatest opportunity for reducing program complexity to manageable proportions. More importantly, the systems are of better quality when they reflect the style provided by LISP; they tend to be more easily tailored to the needs of individual users
keywords CAD, LISP, languages, programming, engineering
series CADline
last changed 2003/06/02 13:58

_id 4052
authors Gero, John S., Akiner , Tuncer V. and Radford, Antony D.
year 1983
title What's What and What's Where : Knowledge Engineering in the Representation of Building by Computer
source 1983. 205-215 pp. : ill. floor planes. include a short bibliography
summary Knowledge engineering allows for the encoding of both numeric and symbolic knowledge as inferences. It provides a fundamentally different means of representing buildings than do traditional data structures and databases. A prototypical knowledge engineering reasoning system which reasons about topological relationships, geometric entities and attributes of buildings is described. It is applied in the analysis of an existing small hotel. Using knowledge engineering we can expect future CAAD system to be different to the one with which we have become familiar
keywords building, representation, reasoning, knowledge, analysis, evaluation, systems
series CADline
email
last changed 2003/06/02 13:58

_id ceb1
authors Maver, T.
year 1984
title What is eCAADe?
source The Third European Conference on CAD in the Education of Architecture [eCAADe Conference Proceedings] Helsinki (Finnland) 20-22 September 1984.
doi https://doi.org/10.52842/conf.ecaade.1984.x.d0s
summary The main interest of the organisation is to improve the design, teaching. The design remains the core of the professional education, while computer science can support a better understanding of the design methods. Computers should amplify the human capabilities like engines allowed to carry higher forces, radio and television enabled communication over larger distances and computers today should aid the human intellectual activities, to gain a better insight in design methodology, to investigate the design process.Design research should study more extensively how buildings behave, the integration and interaction of different disciplines which contribute to the optimization of a design and the design criteria. Computers could increase the possibility to satisfy building regulations, to access and update information, to model the design process and to understand how decisions affect the building quality (functional and economical as well as formal aspects). More effort and money should be spent on this research. The organisation has been sponsored by the EEC for bringing CAAD (Computer Aided Architectural Design) educational material at the disposal of the design teachers. The Helsinki conference is the third European meeting (after Delft 1982 and Brussels 1983) which concentrates on information and experience exchange in CAAD-education and looks for common interests and collaboration. A specific joint study program works on typical audiovisual material and lecture notes, which will be updated according to teacher's needs. A demand has been done to implement an integrated CAAD package. eCAADe focuses to integrate computer approaches across country boundaries as well as across disciplinary boundaries, as to reach a higher quality of the design education.

series eCAADe
email
last changed 2022/06/07 07:50

_id 6eaa
authors O’Connell, Dermot
year 1983
title An Educational Strategy for CAAD and its Implementation in a New System with a Sophisticated Interface
source Proceedings of the International Conference eCAADe [European Computer Aided Architectural Design Education] Brussels (Belgium) 1983, pp. I.1-I.19
doi https://doi.org/10.52842/conf.ecaade.1983.x.i0c
summary Reasons are examined for the slower uptake of CAD in architecture than in engineering. An appropriate response to Computer-Aided Architectural Design is overdue from the educational sector. Schools of Architecture should put CAAD to the forefront in their plans, taking an ambitious long-term view and aiming for high-quality system design to anticipate the industry's drive to produce first-class equipment progressively more cheaply. Schools should press for changes in the way facilities are supplied to them. They should discard obsolete software, buy software commercially, stick to what they can do best, and plan for concomitant changes across the curriculum. A new CAAD system with the emphasis on the design interface being implemented in UCD School of Architecture is briefly described.
keywords CAAD, System Design
series eCAADe
last changed 2022/06/07 07:50

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

_id b190
authors Goldberg, Adele and Robson, David
year 1983
title Smalltalk-80: The language and its implementation
source New York, NY: Addison Wesley Co
summary Smalltalk-80 is the classic standard Smalltalk language as described in Smalltalk-80: The Language and Its Implementation by Goldberg and Robson. This book is commonly called "the Blue Book". Squeak implements the dialect of Smalltalk described in this book, but has a different implementation. Overview of the Smalltalk Language Smalltalk is a general purpose, high level programming language. It was the first original "pure" object oriented language, but not the first to use the object oriented concept, which is credited to Simula 67. The explosive growth of Object Oriented Programming (OOP) technologies began in the early 1980's, with Smalltalk's introduction. Behind it was the idea that the individual human user should be the most important component of any computing system, and that programming should be a natural extension of thinking, and also a dynamic and evolutionary process consistent with the model of human learning activity. In Smalltalk, these ideas are embodied in a framework for human-computer communication. In a sense, Smalltalk is yet another language like C and Pascal, and programs can be written in Smalltalk that have the look and feel of such conventional languages. The difference lies * in the amount of code that can be reduced, * less cryptic syntax, * and code that is easier to handle for application maintenance and enhancement. But Smalltalk's most powerful feature is easy code reuse. Smalltalk makes reuse of programs, routines, and subroutines (methods) far easier. Though procedural languages allow reuse too, it is harder to do, and much easier to cheat. It is no surprise that Smalltalk is relatively easy to learn, mainly due to its simple syntax and semantics, as well as few concepts. Objects, classes, messages, and methods form the basis of programming in Smalltalk. The general methodology to use Smalltalk The notion of human-computer interface also results in Smalltalk promoting the development of safer systems. Errors in Smalltalk may be viewed as objects telling users that confusion exists as to how to perform a desired function.
series other
last changed 2003/04/23 15:14

_id 8e02
authors Brown, A.G.P. and Coenen, F.P.
year 2000
title Spatial reasoning: improving computational efficiency
source Automation in Construction 9 (4) (2000) pp. 361-367
summary When spatial data is analysed the result is often very computer intensive: even by the standards of contemporary technologies, the machine power needed is great and the processing times significant. This is particularly so in 3-D and 4-D scenarios. What we describe here is a technique, which tackles this and associated problems. The technique is founded in the idea of quad-tesseral addressing; a technique, which was originally applied to the analysis of atomic structures. It is based on ideas concerning Hierarchical clustering developed in the 1960s and 1970s to improve data access time [G.M. Morton, A computer oriented geodetic database and a new technique on file sequencing, IBM Canada, 1996.], and on atomic isohedral (same shape) tiling strategies developed in the 1970s and 1980s concerned with group theory [B. Grunbaum, G.C. Shephard, Tilings and Patterns, Freeman, New York, 1987.]. The technique was first suggested as a suitable representation for GIS in the early 1980s when the two strands were brought together and a tesseral arithmetic applied [F.C. Holdroyd, The Geometry of Tiling Hierarchies, Ars Combanitoria 16B (1983) 211–244.; S.B.M. Bell, B.M. Diaz, F.C. Holroyd, M.J.J. Jackson, Spatially referenced methods of processing raster and vector data, Image and Vision Computing 1 (4) (1983) 211–220.; Diaz, S.B.M. Bell, Spatial Data Processing Using Tesseral Methods, Natural Environment Research Council, Swindon, 1986.]. Here, we describe how that technique can equally be applied to the analysis of environmental interaction with built forms. The way in which the technique deals with the problems described is first to linearise the three-dimensional (3-D) space being investigated. Then, the reasoning applied to that space is applied within the same environment as the definition of the problem data. We show, with an illustrative example, how the technique can be applied. The problem then remains of how to visualise the results of the analysis so undertaken. We show how this has been accomplished so that the 3-D space and the results are represented in a way which facilitates rapid interpretation of the analysis, which has been carried out.
series journal paper
more http://www.elsevier.com/locate/autcon
last changed 2003/05/15 21:22

_id e8c7
authors Feigenbaum, Edward A. and McCorduck, Pamela
year 1983
title The Fifth Generation : Artificial Intelligence and Japan's Computer Challenge to the World
source ix, 275 p. Reading, Mass.: Addison- Wesley Pub. Co., 1983. includes bibliography: p. 268
summary Knowledge is the future power and Japan wants to be the first in developing and marketing the Fifth Generation of computers
keywords What is The Fifth Generation? Why Japan ? and how would it affect the Western world? expert systems, hardware, AI
series CADline
last changed 2003/06/02 10:24

_id 60c5
authors Gordon, William J.
year 1983
title An Operator Calculus for Surface and Volume Modeling
source IEEE Computer Graphics and Applications October, 1983. vol. 3: pp. 18-22 : ill. includes bibliography.
summary This article briefly describes the mathematical techniques underlying surface and volume modeling techniques in current practice. The first part outlines what might be termed an operator calculus for the approximation and interpolation of functions of more than one independent variable. This operator calculus uses operator multiplication and Boolean addition to compound the linear operators associated with simple bivariate and multivariate interpolation/approximation schemes. The result is a distributive lattice of approximation operators. The other two sections of the article contain specific examples of how this operator calculus leads to practical techniques for sculptured surface and volume modeling
keywords curved surfaces, representation, solid modeling, boolean operations
series CADline
last changed 2003/06/02 13:58

_id a456
authors Gould, J.D., Conti, J. and Hovanyecz, T.
year 1983
title Composing Letters with a Simulated Listening Typewriter
source Communications of the ACM. April, 1983. vol. 26: pp. 295-308 : ill. graphs, tables. includes bibliography
summary With a listening typewriter, what an author says would be automatically recognized and displayed in front of him or her. However, speech recognition is not yet advanced enough to provide people with a reliable listening typewriter. An aim of the authors' experiments was to determine if an imperfect listening typewriter would be useful for composing letters. Participants dictated letters, either in isolated words or in consecutive word speech. They did this with simulations of listening typewriters that recognized either a limited vocabulary (1000 or 5000 words) or an unlimited vocabulary. Results suggest that some versions, even upon first using them, could be at least as good as traditional methods of handwriting and dictating. Isolated word speech with large vocabularies may provide the basis for a useful listening typewriter
keywords natural languages, applications, systems, business, AI
series CADline
last changed 2003/06/02 14:41

_id ecaaderis2023_41
id ecaaderis2023_41
authors Hadighi, Mahyar and Hadighi, Mehrdad
year 2023
title Between System and Improvisation: Aesthetic performance in Donald Judd’s 100 untitled works in mill aluminum
source De Luca, F, Lykouras, I and Wurzer, G (eds.), Proceedings of the 9th eCAADe Regional International Symposium, TalTech, 15 - 16 June 2023, pp. 79–88
summary In this paper, we intend to analyze Donald Judd’s “100 untiled works in mill aluminum” to see whether they belong to a system, and, if so, what that system is and what delimits it. Our hypothesis is that there is a system driven by shape data, but the system is tempered by improvisational moments at multiple junctures in the project. We are interested in deciphering the systematic, but also the moments of artistic improvisation. To that end, we will look at the roots of data-driven design in the “serial” artworks of the early 1960’s documented in two Artforum essays by Bochner and Coplans, both citing Donald Judd. This period of artistic production is critical in the context of the development of shape grammars in computation which followed in the early 70’s with Stiny and Gips’s Shape Grammar essay. In 1983, Knight used shape grammar to describe the transformation of design languages. In the same period, Donald Judd, without the aid of computation or knowledge of shape grammar, developed a grammar towards the design of “100 untiled works in mill aluminum.” We intend to explore Judd’s 100 works as an example of the utilization of information and its analysis towards design and innovation, and to highlight the role of artistic improvisation in a systemic design process.
keywords Donald Judd, Design System, Shape Grammar, Serial Art.
series eCAADe
email
last changed 2024/02/05 14:28

_id 698a
authors Liang, You-Dong and Barsky, Brian A.
year 1983
title An Analysis and Algorithm for Polygon Clipping
source Communications of the ACM November, 1983. vol. 26: pp. 868-877 : ill. includes bibliography.
summary (This is one of the two standard algorithms for clipping. The other is the Sutherland-Hodgman reentrant algorithm). The process of polygon clipping is analyzed and the understanding gained thereby forms the foundation of a very direct algorithm. Each edge of the input polygon is considered to be a vector and is then extended to be a line of infinite extent. The boundary line segments of the clip window are extended in a similar fashion to become boundary lines. The intersection points of an extended edge with the boundary lines are identified as entry or exit points. It is observed that these entry and exit points can be used to characterize the visibility status of the edge. Not only might the edge have a visible segment, but it can also induce the inclusion in the output polygon of a vertex at a corner of the clip window called a turning vertex. To quantify the visibility conditions, the edge is written in parametric form. The possible contributions (including nil) that can be provided to the output polygon by a particular edge are established. This analysis is then embedded in an algorithm. An arbitrary example input polygon is given and the output of the algorithm is shown. The execution time for this example using this algorithm is measured to be half of what is required by the standard Sutherland-Hodgman reentrant polygon clipping algorithm
keywords polygons, clipping, algorithms, computer graphics
series CADline
last changed 2003/06/02 13:58

_id 49a8
authors McCall, R., Fischer, G. and Morch, A.
year 1990
title Supporting Reflection-in-Action in the Janus Design Environment
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. 247-259
summary We have developed a computer-based design aid called Janus, which is based on a model of computer-supported design that we think has significance for the future of architectural education. Janus utilizes a knowledge-based approach to link a graphic construction system to hypertext. This allows the computer to make useful comments on the solutions that students construct in a CAD-like environment. These comments contain information intended to make students think more carefully about what they are doing while they are doing it. In other words, Janus promotes what Donald Schon has called "reflection-inaction" (Schon, 1983). The Janus design environment is named for the Roman god with a pair of faces looking in opposite directions. In our case the faces correspond to complementary design activities we call construction and argumentation. Construction is the activity of graphically creating the form of the solution e.g., a building. Traditionally this has been done with tracing paper, pencils, and pens. Argumentation is the activity of reasoning about the problem and its solution. This includes such things as considering what to do next, what alternative courses of action are available, and which course of action to choose. Argumentation is mostly verbal but partly graphical.
series CAAD Futures
last changed 1999/04/03 17:58

_id e1cd
authors Woods, William A.
year 1983
title What's Important About Knowledge Representation ?
source IEEE Computer. October, 1983. vol.16: pp. 22-27 : ill. includes bibliography
summary This article discusses a number of issues that serve as research goals for discovering the general principles of knowledge representation. Using techniques and concepts evolved while developing the knowledge-representation system KL-One as illustrations
keywords knowledge, representation, programming
series CADline
last changed 2003/06/02 13:58

_id a3b0
authors Schubert, Lenhart K., Papalaskaris, Mary Angela and Taugher, Lay
year 1983
title Determining Type, Part, Color, and Time Relationships
source IEEE Computer. IEEE Computer Society, October, 1983. vol. 16: pp. 53-60 : ill. Includes bibliography
summary Several kinds of inference problems arise constantly in question-answering processes, which without special handling can absorb large computational resources. One kind requires determining how two types of things are related, others require determining these or similar relationships among parts of objects, color or times. As people we are equippedÔ h) 0*0*0*°° ÔŒ with certain sensory organs, we have special ways of modeling our perception of color, categorizing and cross-correlating the entities whose localization in space and persistence in time renders them cognitively coherent and of analyzing spatial properties, such as parts structure. To match our cognitive skills AI system will need analogous special methods. The methods described in this paper are designed to supplement a deductive question-answering algorithm that is now operational. The algorithm draws on a base of logical propositions organized as semantic net
keywords semantic networks, AI, inference, perception, cognition, color, patterns, algorithms
series CADline
last changed 2003/06/02 13:58

_id 6647
authors Buxton, W., M.R. Lamb and Sherman, D. (et al)
year 1983
title Towards a Comprehensive User Interface Management System
source computer Graphics. July, 1983. vol. 17: pp. 35-42 : ill. includes bibliography
summary A UIMS developed at the University of Toronto is presented. The system has two main components. The first is a set of tools to support the design and implementation of interactive graphics programs. The second is a run-time support package which handles interactions between the system and the user (things such as hit detection, event detection, screen updates, and procedure invocation), and provides facilities for logging user interactions for later protocol analysis. The design / implementation tool is a preprocessor, called MENULAY, which permits the applications programmer to use interactive graphics techniques to design graphics menus and their functionality. The output of this preprocessor is high- level code which can be compiled with application-specific routines. User interactions with the resulting executable module are then handled by the run-time support package. The presentation works through an example from design to execution in a step-by-step manner
keywords software, user interface, management, computer graphics
series CADline
last changed 2003/06/02 13:58

_id 8b75
authors Cullen, Ian
year 1983
title Expert Systems in Architectural and Planning Education
source Proceedings of the International Conference eCAADe [European Computer Aided Architectural Design Education] Brussels (Belgium) 1983, pp. IV.1-IV.15
doi https://doi.org/10.52842/conf.ecaade.1983.x.a7j
summary The paper discusses the problems and possibilities of a project initiated recently within the Bartlett in the general area of knowledge engineering. The aim is to assemble a set of knowledge bases which may be explored interactively by students. The system will differ from traditional CAL packages in that it will be both problem oriented - designed to extract from the students the information required to reach a specific decision - and capable of providing an explanation of its approach at any point.
keywords Knowledge Engineering
series eCAADe
last changed 2022/06/07 07:50

_id e7b8
authors Dahl, Veronica
year 1983
title Logic Programming as a Representation of Knowledge
source IEEE Computer. IEEE Computer Society, October, 1983. vol. 16: pp. 106-110 : ill. includes bibliography
summary Logic has traditionally provided a firm conceptual framework for representing knowledge. As it can formally deal with the notion of logical consequence, the introduction of Prolog has made it possible to represent knowledge in terms of logic and also to expect appropriate inferences to be drawn from it automatically. This article illustrates and explores these ideas with respect to two central representational issues: problem solving knowledge and database knowledge. The technical aspects of both subjects have been covered elsewhere (Kowalski, R. Logic for problem solving, North- Holland pub. 1979 ; Dahl, V. on database system development through logic ACM Trans.vol.7/no.3/Mar.1982 pp.102). This explanation uses simple, nontechnical terms
keywords PROLOG, knowledge, representation, logic, programming, problem solving, database
series CADline
last changed 1999/02/12 15:08

_id 0d6d
authors Doyle, Jon
year 1983
title Admissible State Semantics for Representational Systems
source IEEE Computer. IEEE computer society, October, 1983. vol. 16: pp. 119-122. includes bibliography
summary A clear semantic is one of the most important requirements in designing representational systems. This article indicates how many kinds of informal semantics can be transformed directly into formal semantics of no greater complexity. The author focuses on the meaning rather than on the expression within a particular logical language. The distinction of the meaning of mental components from general ecological meaning is done by the name admissible state semantics, leaving the specification of external meaning to the standard tools of model theory. The method of admissible state semantic is simple, resembling the usual explanations of intended meanings given by system designers. The designer explains the meaning of one representation in terms of its relations to other representation in the system. Examples are given
keywords logic, languages, representation, systems, semantics
series CADline
last changed 1999/02/12 15:08

_id c201
authors Elfes, Alberto and Talukdar, Sarosh N.
year 1983
title A Distributed Control System for a Mobile Robot
source 7 p. : ill. Pittsburgh: Design Research Center, CMU, December, 1983. includes bibliography
summary This paper describes a distributed software control structure developed for the CMU Rover, an advanced mobile robot equipped with a variety of sensors. Expert modules control the operation of the sensors and actuators, interpret sensory and feedback information, build an internal model of the robot's working environment, devise strategies to accomplish proposed tasks and execute these strategies. Each expert module is composed of a pair of (master, slave) processes, where the master process controls the scheduling and working of the slave process. Communication among expert modules occurs asynchronously over a blackboard structure. Information specific to the execution of a given task is provided through a control plan. The system is distributed over a network of processors. Real-time operating system kernels local to each processor and an interprocess message communication mechanism ensure transparency of the underlying network structure. The various parts of the system are presented in this paper and future work to be performed is mentioned
keywords robotics, control
series CADline
last changed 2003/06/02 13:58

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