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	a9b5
authors	Johnson, Robert H.
year	1981
title	DESIGN: An Integrated System for CAD and CAM
source	CAM-I International Spring Seminar, 10 p.
summary	DESIGN is an advanced development of a computer aided engineering system to be applied to the design and engineering of mechanical systems. Engineering projects where DESIGN may be applied range from small assemblies to large complex mechanical systems such as a machining center or a motor vehicle. This paper provides a systematic overview of DESIGN. Examples of parts and assemblies created with DESIGN are shown.
keywords	Integration, CAD, Systems, CAM, Engineering, CAE, Mechanical Engineering, Assemblies, Software
series	CADline
last changed	1999/02/15 15:25

_id	2430
authors	Kernighan, Brian W. and Plauger, P.J.
year	1981
title	Software Tools in Pascal
source	ix, 366 p. Reading,Mass.: Addison-Wesley Pu. Co., 1981. includes bibliography and index
summary	How to write programs that make good tools, and how to program well in the process are the two main concepts. Structured programming and top down design are emphasized and applied to every program as are principles of design, testing efficiency and portability
keywords	programming, PASCAL, education
series	CADline
last changed	2003/06/02 13:58

_id	16c7
authors	Li, Andrew I-Kang
year	2000
title	Integrating Symbolic and Spatial Information in Shape Grammars, with an Example from Traditional Chinese Architecture
doi	https://doi.org/10.52842/conf.caadria.2000.245
source	CAADRIA 2000 [Proceedings of the Fifth Conference on Computer Aided Architectural Design Research in Asia / ISBN 981-04-2491-4] Singapore 18-19 May 2000, pp. 245-253
summary	Stiny's (1981) formulation of descriptions is applied to building sections and their descriptions found in the twelfth-century Chinese building manual Yingzao fashi.
series	CAADRIA
email
last changed	2022/06/07 07:50

_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	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	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	ecca
authors	Koning, H. and Eizenberg, J.
year	1981
title	The Language of the Prairie : Frank Lloyd Wright's Prairie Houses
source	Environment and Planning B. 1981. vol. 8: pp. 295-323 : ill. includes bibliography
summary	The following parametric shape grammar generates the compositional forms and specifies the function zones of Frank Lloyd Wright's prairie-style houses. The establishment of a fireplace is the key to the definition of the prairie-style house. Around this fireplace, functionally distinguished Froebelean-type blocks are recursively added and interpenetrated to from the basic compositions from which elaborated prairie-style houses are derived. The grammar is based on a corpus of eleven houses from the Winslow house, the evolutionary precursor of the style, to the Robie house, considered by many as the culmination of the style. Much has been written about prairie-style houses - their balance, their debt to Beaux Arts and Japanese design traditions, and their organic qualities. However, such descriptions do not explicitly inform us as to how prairie-style houses are constructed, and consequently provide little help in designing new members of this style. The power of a grammar, such as the one given here, is that it establishes a recursive structure from which new designs can be constructed. Three new prairie houses generated by the grammar as well as step-by-step generation of one of these designs are shown
keywords	synthesis, analysis, architecture, shape grammars, parametrization,
series	CADline
last changed	2003/06/02 13:58

_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	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	ecaade2012_087
id	ecaade2012_087
authors	Lorenz, Wolfgang E.
year	2012
title	Estimating the Fractal Dimension of Architecture: Using two Measurement Methods implemented in AutoCAD by VBA
doi	https://doi.org/10.52842/conf.ecaade.2012.1.505
source	Achten, Henri; Pavlicek, Jiri; Hulin, Jaroslav; Matejovska, Dana (eds.), Digital Physicality - Proceedings of the 30th eCAADe Conference - Volume 1 / ISBN 978-9-4912070-2-0, Czech Technical University in Prague, Faculty of Architecture (Czech Republic) 12-14 September 2012, pp. 505-513
summary	The concept of describing and analyzing architecture from a fractal point of view, on which this paper is based, can be traced back to Benoît Mandelbrot (1981) and Carl Bovill (1996) to a considerable extent. In particular, this includes the distinction between scalebound (offering a limited number of characteristic elements) and scaling objects (offering many characteristic elements of scale) made by B. Mandelbrot (1981). In the fi rst place such a differentiation is based upon a visual description. This paper explores the possibility of assistance by two measurement methods, fi rst time introduced to architecture by C. Bovill (1996). While the box-counting method measures or more precisely estimates the box-counting dimension D b of objects (e.g. facades), range analysis examines the rhythm of a design. As CAD programs are familiar to architects during design processes, the author implemented both methods in AutoCAD using the scripting language VBA. First measurements indicate promising results for indicating the distinction between what B. Mandelbrot called scalebound and scaling buildings.
wos	WOS:000330322400052
keywords	Box-Counting Method; Range Analysis; Hurst-Exponent; Analyzing Architecture; Scalebound and Scaling objects
series	eCAADe
email
last changed	2022/06/07 07:59

_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	sigradi2008_166
id	sigradi2008_166
authors	Papanikolaou, Dimitris
year	2008
title	Digital Fabrication Production System Theory: Towards an Integrated Environment for Design and Production of Assemblies
source	SIGraDi 2008 - [Proceedings of the 12th Iberoamerican Congress of Digital Graphics] La Habana - Cuba 1-5 December 2008
summary	A Digital Fabrication Production System (DFPS) is a concept describing a set of processes, tools, and resources that will be able to produce an artifact according to a design, fast, cheap, and easy, independently of location. A DFPS project is a complex assembly of custom parts that is delivered by a network of fabrication and assembly processes. This network is called the value chain. The workflow concept of a DFPS is the following: begin design process with a custom geometric form; decompose it into constructible parts; send the part files for fabrication to various locations; transport all parts at the construction site at the right time; finally, assemble the final artifact. Conceptually it means that based on a well structured value chain we could build anything we want, at anyplace, at controllable cost and quality. The goals of a DFPS are the following: custom shapes, controllable lead time, controllable quality, controllable cost, easiness of fabrication, and easiness of assembly. Simply stated this means to build any form, anywhere, accurately, cheap, fast, and easy. Unfortunately, the reality with current Digital Fabrication (DF) projects is rather disappointing: They take more time than what was planned, they get more expensive than what was expected, they involve great risk and uncertainty, and finally they are too complex to plan, understand, and manage. Moreover, most of these problems are discovered during production when it is already late for correction. However, there is currently no systematic approach to evaluate difficulty of production of DF projects in Architecture. Most of current risk assessment methods are based on experience gathered from previous similar cases. But it is the premise of mass customization that projects can be radically different. Assembly incompatibilities are currently addressed by building physical mockups. But physical mockups cause a significant loss in both time and cost. All these problems suggest that an introduction of a DFPS for mass customization in architecture needs first an integrated theory of assembly and management control. Evaluating feasibility of a DF project has two main problems: first, how to evaluate assemblability of the design; second, how to evaluate performance of the value chain. Assemblability is a system’s structure problem, while performance is a system’s dynamics problem. Structure of systems has been studied in the field of Systems Engineering by Network Analysis methods such as the Design Structure Matrix (DSM) (Steward 1981), and the liaison graph (Whitney 2004), while dynamics of systems have been studied by System Dynamics (Forrester 1961). Can we define a formal method to evaluate the difficulty of production of an artifact if we know the artifact’s design and the production system’s structure? This paper formulates Attribute Process Methodology (APM); a method for assessing feasibility of a DFPS project that combines Network Analysis to evaluate assemblability of the design with System Dynamics to evaluate performance of the value chain.
keywords	Digital Fabrication, Production System, System Dynamics, Network Analysis, Assembly
series	SIGRADI
email
last changed	2016/03/10 09:57

_id	2c6a
authors	Rosenbloom, Paul S.
year	1981
title	A World-Championship-Level Othello Program
source	Pittsburgh, PA: Department of Computer Science, CMU, August, 1981. [4], 47 p. : ill. and graphs. include bibliography
summary	Othello is a recent addition to the collection of games that have been examined within artificial intelligence. Advances have been rapid, yielding programs that have reached the level of world-championship play. This article describes the current champion Othello program, Iago. The work described here includes: (1) a task analysis of Othello; (2) the implementation of a program based on this analysis and state- of-the-art AI game-playing techniques; and (3) an evaluation of the program's performance through games played against other programs and comparisons with expert human play
keywords	AI, programming, games, systems
series	CADline
last changed	2003/06/02 10:24

_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	avocaad_2001_09
id	avocaad_2001_09
authors	Yu-Tung Liu, Yung-Ching Yeh, Sheng-Cheng Shih
year	2001
title	Digital Architecture in CAD studio and Internet-based competition
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	Architectural design has been changing because of the vast and creative use of computer in different ways. From the viewpoint of designing itself, computer has been used as drawing tools in the latter phase of design (Mitchell 1977; Coyne et al. 1990), presentation and simulation tools in the middle phase (Liu and Bai 2000), and even critical media which triggers creative thinking in the very early phase (Maher et al. 2000; Liu 1999; Won 1999). All the various roles that computer can play have been adopted in a number of professional design corporations and so-called computer-aided design (CAD) studio in schools worldwide (Kvan 1997, 2000; Cheng 1998). The processes and outcomes of design have been continuously developing to capture the movement of the computer age. However, from the viewpoint of social-cultural theories of architecture, the evolvement of design cannot be achieved solely by designers or design processes. Any new idea of design can be accepted socially, culturally and historically only under one condition: The design outcomes could be reviewed and appreciated by critics in the field at the time of its production (Csikszentmihalyi 1986, 1988; Schon and Wiggins 1992; Liu 2000). In other words, aspects of design production (by designers in different design processes) are as critical as those of design appreciation (by critics in different review processes) in the observation of the future trends of architecture.Nevertheless, in the field of architectural design with computer and Internet, that is, so-called computer-aided design computer-mediated design, or internet-based design, most existing studies pay more attentions to producing design in design processes as mentioned above. Relatively few studies focus on how critics act and how they interact with designers in the review processes. Therefore, this study intends to investigate some evolving phenomena of the interaction between design production and appreciation in the environment of computer and Internet.This paper takes a CAD studio and an Internet-based competition as examples. The CAD studio includes 7 master's students and 2 critics, all from the same countries. The Internet-based competition, held in year 2000, includes 206 designers from 43 counties and 26 critics from 11 countries. 3 students and the 2 critics in the CAD studio are the competition participating designers and critics respectively. The methodological steps are as follows: 1. A qualitative analysis: observation and interview of the 3 participants and 2 reviewers who join both the CAD studio and the competition. The 4 analytical criteria are the kinds of presenting media, the kinds of supportive media (such as verbal and gesture/facial data), stages of the review processes, and interaction between the designer and critics. The behavioral data are acquired by recording the design presentation and dialogue within 3 months. 2. A quantitative analysis: statistical analysis of the detailed reviewing data in the CAD studio and the competition. The four 4 analytical factors are the reviewing time, the number of reviewing of the same project, the comparison between different projects, and grades/comments. 3. Both the qualitative and quantitative data are cross analyzed and discussed, based on the theories of design thinking, design production/appreciation, and the appreciative system (Goodman 1978, 1984).The result of this study indicates that the interaction between design production and appreciation during the review processes could differ significantly. The review processes could be either linear or cyclic due to the influences from the kinds of media, the environmental discrepancies between studio and Internet, as well as cognitive thinking/memory capacity. The design production and appreciation seem to be more linear in CAD studio whereas more cyclic in the Internet environment. This distinction coincides with the complementary observations of designing as a linear process (Jones 1970; Simon 1981) or a cyclic movement (Schon and Wiggins 1992). Some phenomena during the two processes are also illustrated in detail in this paper.This study is merely a starting point of the research in design production and appreciation in the computer and network age. The future direction of investigation is to establish a theoretical model for the interaction between design production and appreciation based on current findings. The model is expected to conduct using revised protocol analysis and interviews. The other future research is to explore how design computing creativity emerge from the process of producing and appreciating.
series	AVOCAAD
email
last changed	2005/09/09 10:48

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