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	28cc
authors	Johnson, Robert H. and Dewhirst, Donald L.
year	1981
title	Machine Layout With Volumetric Models
source	International Congress and Exposition. February, 1981. 7 p. : ill. includes bibliography. --- An SAE Technical Paper Series
summary	Computer-Aided Engineering Systems are interactive computer based systems for application to a wide variety of engineering and manufacturing functions. Volumetric models and a structured database are two key components of these systems. This paper presents the concept of a product structures Data Base and its use in combination with volumetric models, in the layout phase of a machine design. This combination provides for automatic analysis of interface and fit between parts of a machine
keywords	CAE, solid modeling, representation, systems, CAM, integration, database
series	CADline
last changed	2003/06/02 13:58

_id	20b5
authors	Kalay, Yehuda E.
year	1981
title	Interactive Shape Generation and Spatial Conflict Testing
source	ACM IEEE Design Automation Conference Proceedings (18th : 1981 : Nashville, Tennessee). pp. 75-81 : ill. includes bibliography
summary	A general purpose, research oriented, interactive modeling system is presented. It is based on two different coherent polyhedral shape representations: a planar graph, used for computation and data manipulation, and relational-database for compact store and general communication with application programs. The two representations effectively partition the system shape-space into active and inactive shapes, respectively. These are explicitly interchangeable by the user, keeping the actual workspace at a manageable size. The basic functionalities provided by the system include the combination of primitive shapes into complex objects by means of spatial set operators (union, intersection and difference), their modeling by means of scaling, rotation and translation, spatial interference detection and graphical display capabilities
keywords	geometric modeling, solid modeling, representation, boolean operations, B-rep, intersection
series	CADline
email
last changed	2003/06/02 13:58

_id	eb23
authors	Akin, Omer
year	1981
title	Efficient Computer-User Interface in Electronic Mail Systems
source	Department of Computer Science, April, 1981. ii, 24 p. includes bibliography
summary	This research explores the question of improving user- computer interface. The approach is one of observing and codifying various parameters that influence the efficiency of interface in the context of electronic mail tasks. In the paper the authors observe 'expert' and 'regular' users of a mail system and analyze the sources of efficiency. It is clear that experts use a different, more specialized, set of commands in performing standard mail tasks. While experts perform these tasks with fewer errors and more 'completely,' it is not clear that they achieve this any faster than regular users. Recommendations for design are made
keywords	user interface, protocol analysis
series	CADline
email
last changed	2003/05/17 10:09

_id	4140
authors	Koffman, Elliot B.
year	1981
title	Problem Solving and Structured Programming in PASCAL
source	82 p. in various paging reading Reading, Mass.: Addison-Wesley Pub. Co. Inc., 1981. include index.
summary	-- (Addison-wesley Series in Computer Science and Information Processing). A one semester introductory course in computer programming. Teaches problem solving through the technique of stepwise algorithms development. Most of the features of standard PASCAL are covered in detail. Separate chapters are devoted to a discussion of advanced data structures like files, multidimensional arrays, and lists and trees. There is an appendix that discusses string processing in UCSD PASCAL
keywords	PASCAL, programming, problem solving, education, languages
series	CADline
last changed	2003/06/02 13:58

_id	2fa9
authors	Lewis, W.P.
year	1981
title	The Role of Intelligence in the Design of Mechanical Components
source	North-Holland Publishing Company, 1981. pp. 59-88 : tables. includes bibliography: p. 79
summary	Methods used to design engineering components to transmit mechanical power are described and analyzed. The analysis defines the role of human intelligence, which is conceived in terms of the capacity to generate and process information, and its role in design problem solving therefore are examined with respect to an information processing design behavior and throw light on the extent to which it can be simulated or augmented by the digital computer
keywords	design process, problem solving, mechanical engineering, intelligence
series	CADline
last changed	2003/06/02 13:58

_id	2f1a
authors	Dabney, M.K., Wright, J.C. and Sanders, D.H.
year	1999
title	Virtual Reality and the Future of Publishing Archaeological Excavations: the multimedia publication of the prehistoric settlement on Tsoungiza at Ancient Nemea
source	New York: The Metropolitan Museum of Art
summary	The Nemea Valley Archaeological Project is a study of settlement and land use in a regional valley system in Greece extending from the Upper Paleolithic until the present. Active field research was conducted by four teams between 1981 and 1990. The first component was a regional archaeological survey. Second, and closely related to the first, was a social anthropological study of modern settlement and land use. Next was a team assigned to excavate the succession of prehistoric settlements of Ancient Nemea on Tsoungiza. Last, historical ecologists, a palynologist, and a geologist formed the environmental component of the research. As a result of advances in electronic publishing, plans for the final publication of the Nemea Valley Archaeological Project have evolved. Complete publication of the excavation of the prehistoric settlements of Ancient Nemea on Tsoungiza will appear in an interactive multimedia format on CD/DVD in Fall 2000. This project is planned to be the first electronic publication of the American School of Classical Studies at Athens. We have chosen to publish in electronic format because it will meet the needs and interests of a wider audience, including avocational archaeologists, advanced high school and college students, graduate students, and professional archaeologists. The multimedia format on CD/DVD will permit the inclusion of text, databases, color and black-and-white images, two and three-dimensional graphics, and videos. This publication is being developed in cooperation with Learning Sites, Inc., which specializes in interactive three-dimensional reconstructions of ancient worlds http://www.learningsites.com. The Nemea Valley Archaeological Project is particularly well prepared for the shift towards electronic publishing because the project's field records were designed for and entered in computer databases from the inception of the project. Attention to recording precise locational information for all excavated objects enables us to place reconstructions of objects in their reconstructed architectural settings. Three-dimensional images of architectural remains and associated features will appear both as excavated and as reconstructed. Viewers will be able to navigate these images through the use of virtual reality. Viewers will also be able to reference all original drawings, photographs, and descriptions of the reconstructed architecture and objects. In this way a large audience will be able to view architectural remains, artifacts, and information that are otherwise inaccessible.
series	other
last changed	2003/04/23 15:14

_id	c74f
authors	Guedj, Richard A.
year	1981
title	Towards Better Interactive Systems : Methodology and Problems in Human-Computer Interaction
source	North-Holland Pub. Co., 1981. pp. 89-102. includes bibliography
summary	Understanding human-computer interaction is an issue which is gaining more attention. Significant progress in the design of better interactive systems will come through a needed methodology. Facts and beliefs about interaction are recalled. Four approaches to a conceptual framework which have been advanced are sketched. Some problems are outlined. This paper draws attention on the results of a recent IFIP workshop on Methodology of Interaction, the Seillac-II workshop
keywords	user interface, methodology, CAD, design, methods,
series	CADline
last changed	2003/06/02 10:24

_id	82a8
authors	Kutay, Ali R.
year	1981
title	Multi-User Concurrent Design Databases
source	May 14, 1981. [1] 27 p. includes bibliography
summary	Developing comprehensive computer models of engineering systems is an important research effort. These models are planned to support design, analysis, optimization and production of these systems by providing a common integrated source of data. They are also expected to support multiple users accessing them concurrently so that parallel development of the system is enabled. This paper looks at the concurrency control problem in computer models of engineering design. It reviews the major aspects of database systems which are the tools of modelling, and identifies different representations used in the design process. With this as the context, the paper surveys the basic mechanisms for concurrency control in database systems. It then classifies the different degrees of concurrency in different representations of the design process
keywords	engineering, design, database, concurrency, CAD
series	CADline
last changed	2003/06/02 13:58

_id	e56f
authors	Milne, Murry, Liggett, Robin S. and Campbell, Carol-Lynn (et al)
year	1981
title	An Interactive Computer Graphic Daylighting Design Tool
source	1981? pp. 99-103: graphs. includes bibliography
summary	A fast simple interactive computer program which plots daylight curves has been developed for hands-on use by architects at the beginning of the design process. It calculates daylight illuminations levels using the well known IES/LOF method. The most important feature of the program is its friendly interface, which means that designers with no computer literacy can easily describe their building and quickly progress through as many design modifications as desired. The program is self-instructional, giving first-time users a demonstration of its various features, then inviting them to go back and put their own building. The program is written in FORTRAN IV and runs on Tektronix storage tube graphics terminal
keywords	evaluation, analysis, algorithms, computer graphics, lighting, user interface
series	CADline
email
last changed	2003/06/02 13:58

_id	0c81
authors	Robinson, John T.
year	1981
title	The K-D-B-Tree : A Search Structure of Large Multidimensional Dynamic Indexes
source	22 p. : ill
summary	Pittsburgh, PA: Department of Computer Science, CMU, February, 1981. CMU-CS-81-106. includes some bibliographical references. The problem of retrieving multikey records via range queries form a large, dynamic index is considered. By large it is meant that most of the index must be sorted on secondary memory. By dynamic it is meant that insertions and deletions are intermixed with queries, so that the index cannot be built beforehand. A new data structure, the K-D-B-tree, is presented as a solution to this problem. K-D-B-trees combine properties of K-D-trees and B-trees. It is expected that the multidimensional search efficiency of balanced K-D-trees and the I/O efficiency of B-trees should both be approximated in the K-D-B-tree. Preliminary experimental results that tend to support this are reported
keywords	algorithms, search
series	CADline
last changed	2003/06/02 13:58

_id	a664
authors	Samet, Hanan
year	1981
title	Connected Component Labeling Using Quadtrees
source	Journal of the Association for Computing Machinery. July, 1981. vol. 23: pp. 487-501 : ill. includes bibliography
summary	An algorithm is presented for labeling the connectedÔ h)000*°° ÔŒ components of an image represented by a quadtree. The algorithm proceeds by exploring all possible adjacencies for each node once and only once. As soon as this is done, any equivalences generated by the adjacency labeling phase are propagated. Analysis of the algorithm reveals that its average execution time is of the order O(W+B(logB)), where B and W correspond to the number of blocks comprising the foreground and background, respectively, of the image
keywords	algorithms, quadtree, image processing, pattern recognition, representation
series	CADline
last changed	1999/02/12 15:09

_id	barakat_theses_eaea2007
id	barakat_theses_eaea2007
authors	Barakat, Husam
year	2008
title	Analytical Study of the Projects of Students in the Architectural Design - Comparision Between Physical and Digital Models
source	Proceedings of the 8th European Architectural Endoscopy Association Conference
summary	Since its foundation in 1981, Architectural faculty has adopted traditional teaching methods for practical subjects such as architectural design and Urban planning. In these subjects, students submitted their projects and exams on (chanson) and (calk) sheets using various drawing tools. Such tools are still in use by students up to date in manually architectural concept presentation. This comes after the students pass a number of subjects related to art and engineering drawing that help the students in gaining drawing representation and rendering skills.
keywords	architectural concept, traditional teaching, computer technology
series	EAEA
email
more	http://info.tuwien.ac.at/eaea
last changed	2008/04/29 20:46

_id	c0ee
authors	Bentley, Jon L. and Ottmann, Thomas
year	1981
title	The Complexity of Manipulating Hierarchically Defined Sets of Rectangles
source	40 p. : ill. Pittsburgh, PA: Department of Computer Science, CMU., April, 1981. CMU-CS-81-109. includes bibliography
summary	Algorithms that manipulate sets of rectangles are of great practical importance in VLSI design systems and other applications. Although much theoretical work has appeared recently on the complexity of rectangle problems, it has assumed that the inputs are given as a list of rectangles. In this paper the authors study the complexity of rectangle problems when the inputs are given in a hierarchical language that allows the designer to build large designs by replicating small designs. They show that while most of the problems are NP-hard in the general case, there are O(N log N) algorithms that process inputs obeying certain restrictions
keywords	rectangles, algorithms, computational geometry, data structures
series	CADline
last changed	2003/06/02 10:24

_id	a6f1
authors	Bridges, A.H.
year	1986
title	Any Progress in Systematic Design?
source	Computer-Aided Architectural Design Futures [CAAD Futures Conference Proceedings / ISBN 0-408-05300-3] Delft (The Netherlands), 18-19 September 1985, pp. 5-15
summary	In order to discuss this question it is necessary to reflect awhile on design methods in general. The usual categorization discusses 'generations' of design methods, but Levy (1981) proposes an alternative approach. He identifies five paradigm shifts during the course of the twentieth century which have influenced design methods debate. The first paradigm shift was achieved by 1920, when concern with industrial arts could be seen to have replaced concern with craftsmanship. The second shift, occurring in the early 1930s, resulted in the conception of a design profession. The third happened in the 1950s, when the design methods debate emerged; the fourth took place around 1970 and saw the establishment of 'design research'. Now, in the 1980s, we are going through the fifth paradigm shift, associated with the adoption of a holistic approach to design theory and with the emergence of the concept of design ideology. A major point in Levy's paper was the observation that most of these paradigm shifts were associated with radical social reforms or political upheavals. For instance, we may associate concern about public participation with the 1970s shift and the possible use (or misuse) of knowledge, information and power with the 1980s shift. What has emerged, however, from the work of colleagues engaged since the 1970s in attempting to underpin the practice of design with a coherent body of design theory is increasing evidence of the fundamental nature of a person's engagement with the design activity. This includes evidence of the existence of two distinctive modes of thought, one of which can be described as cognitive modelling and the other which can be described as rational thinking. Cognitive modelling is imagining, seeing in the mind's eye. Rational thinking is linguistic thinking, engaging in a form of internal debate. Cognitive modelling is externalized through action, and through the construction of external representations, especially drawings. Rational thinking is externalized through verbal language and, more formally, through mathematical and scientific notations. Cognitive modelling is analogic, presentational, holistic, integrative and based upon pattern recognition and pattern manipulation. Rational thinking is digital, sequential, analytical, explicatory and based upon categorization and logical inference. There is some relationship between the evidence for two distinctive modes of thought and the evidence of specialization in cerebral hemispheres (Cross, 1984). Design methods have tended to focus upon the rational aspects of design and have, therefore, neglected the cognitive aspects. By recognizing that there are peculiar 'designerly' ways of thinking combining both types of thought process used to perceive, construct and comprehend design representations mentally and then transform them into an external manifestation current work in design theory is promising at last to have some relevance to design practice.
series	CAAD Futures
email
last changed	2003/11/21 15:16

_id	91c4
authors	Checkland, P.
year	1981
title	Systems Thinking, Systems Practice
source	John Wiley & Sons, Chichester
summary	Whether by design, accident or merely synchronicity, Checkland appears to have developed a habit of writing seminal publications near the start of each decade which establish the basis and framework for systems methodology research for that decade."" Hamish Rennie, Journal of the Operational Research Society, 1992 Thirty years ago Peter Checkland set out to test whether the Systems Engineering (SE) approach, highly successful in technical problems, could be used by managers coping with the unfolding complexities of organizational life. The straightforward transfer of SE to the broader situations of management was not possible, but by insisting on a combination of systems thinking strongly linked to real-world practice Checkland and his collaborators developed an alternative approach - Soft Systems Methodology (SSM) - which enables managers of all kinds and at any level to deal with the subtleties and confusions of the situations they face. This work established the now accepted distinction between hard systems thinking, in which parts of the world are taken to be systems which can be engineered, and soft systems thinking in which the focus is on making sure the process of inquiry into real-world complexity is itself a system for learning. Systems Thinking, Systems Practice (1981) and Soft Systems Methodology in Action (1990) together with an earlier paper Towards a Systems-based Methodology for Real-World Problem Solving (1972) have long been recognized as classics in the field. Now Peter Checkland has looked back over the three decades of SSM development, brought the account of it up to date, and reflected on the whole evolutionary process which has produced a mature SSM. SSM: A 30-Year Retrospective, here included with Systems Thinking, Systems Practice closes a chapter on what is undoubtedly the most significant single research programme on the use of systems ideas in problem solving. Now retired from full-time university work, Peter Checkland continues his research as a Leverhulme Emeritus Fellow. "
series	other
last changed	2003/04/23 15:14

_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	a8ca
authors	Courtieux, Gerard
year	1981
title	Man Machine Interface Problems in Computer Aided Architectural Design
source	1981. pp. 231-250 : ill. includes bibliography. -- discussion (pp. 247-250)
summary	The author and two other researchers conducted a world-wide survey of existing computer aided architectural design programs in 1978. The purpose of the survey was to validate an earlier study of the architectural design process and to investigate problem areas in Computer Aided Architectural Design (CAAD). The survey indicated that two problems of man machine interaction in CAAD, though partly solved, remain a challenge for computer scientists: the description and graphical representation of three-dimensional objects. The formalization of the information collected in the survey, together with the experience of the author in teaching computer graphics to architecture students for the past ten years, is used to give some insight in these two problems and to make some recommendations for the improvement of the man machine interface in CAAD
keywords	architecture, CAD, user interface
series	CADline
last changed	1999/02/12 15:07

_id	sigradi2009_1044
id	sigradi2009_1044
authors	Cruz, Débora Melo; Gabriela Celani
year	2009
title	A influência de Frank Lloyd Wright sobre João Batista Vilanova Artigas – uma análise formal [The Influence of Frank Lloyd Wright on João Batista Vilanova Artigas - A Formal Analysis]
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	This study intends to propose a new use of the shape grammar: verify the influence of a certain architect’s language over another architect’s language. Some Brazilian modern architecture critics suggest the existence of an influence of Wright’s prairie houses over Artigas’ early work, but the methods used to reach to this conclusion are always empirical and not very objective. The present work aims to confirm this influence in a more rational manner, comparing Wright’s prairie houses grammar developed by Koning and Eizenberg (1981) to Artigas’ first phase grammar that will developed in this work.
keywords	Gramática da forma; F. L. Wright; J. V. Artigas
series	SIGRADI
email
last changed	2016/03/10 09:49

_id	85bb
authors	Eastman, Charles M.
year	1981
title	Computers in Architecture, Design, and Fine and Performing Arts Education
source	5, [6] p. May, 1981
summary	In the next ten years it is expected that the processes and techniques for teaching design will greatly change. Feedback on design decisions - visually and analytically - will be fast and more powerful than is possible today. Much of the busy paper and pencil construction work will be eliminated or greatly reduced. The author anticipates students designing buildings and artifacts on the computer, quickly and with sophistication, achieving results beyond what can be expected through manually based education today. This proposal cannot realize this whole revolution. Rather, it attempts to only take a step outward from the neck of a funnel, showing people opportunities and providing a framework that allows easy extension. Some of these extensions, most of them trivial to develop, are presented in the scenario section of the proposal
keywords	architecture, design, education, CAD
series	CADline
email
last changed	2003/05/17 10:15

_id	01bb
authors	Er, M.C.
year	1981
title	A Representation Approach to the Tower of Hanoi Problem
source	22 p. : ill. Wollongong: Department of Computing Science, University of Wollongong, August, 1981. includes bibliography
summary	By making the moving direction of each disc explicit in the representation, a bit-string so constructed can be used to drive the Tower of Hanoi algorithm. The behavior of disc moves is further analyzed based on the bit-string representation. It has been shown that the bit-string for moving n discs can be used to generate successively the Gray codes of n bits
keywords	representation, programming, combinatorics, algorithms, recursion
series	CADline
last changed	2003/06/02 13:58

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