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	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
source	Reconnecting [ACADIA Conference Proceedings / ISBN 1-880250-03-9] Washington University (Saint Louis / USA) 1994, pp. 39-49
doi	https://doi.org/10.52842/conf.acadia.1994.039
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

_id	0cd8
authors	Baker, Nelson C. and Fenves, Stephen J.
year	1987
title	A Knowledge Acquisition Study of Structural Engineers Performing Preliminary Design
source	92 p. : ill. Pittsburgh, PA: Engineering Design Research Center, CMU, December, 1987. EDRC-12-19-87
summary	This paper describes interviews with experts in structural engineering. Video recordings of the experts performing preliminary structural design for three buildings were obtained. The knowledge acquisition process is described and the conclusions reached are presented. The conclusions are discussed in terms of level of design detail, solution time, distribution of process and domain activities, the use of previous information in the design process, and the use of sketches
keywords	knowledge acquisition, civil engineering, design process, design methods, drafting, systems, protocol analysis
series	CADline
last changed	2003/06/02 10:24

_id	05c2
authors	Balachandran, M. B. and Gero, John S.
year	1987
title	Use of Knowledge in Selection and Control of Optimization Algorithms
source	engineering Optimization. 1987. vol. 12: pp. 163-173
summary	Computers have been widely used in optimization based problem solving processes to assist with the numerical computations. The widespread availability of symbolic computational tools and recent developments in artificial intelligence now make it feasible to expand the role of computers in this area. Various classes of knowledge used to improve the efficiency of the optimization processes are presented in this paper. A prototype system developed in the domain of multicriteria decision making is demonstrated. The system contains knowledge needed to select appropriate optimization algorithms, to control the solution process, and to select alternate algorithms if needed
keywords	multicriteria, algorithms, knowledge base, systems, problem solving, optimization
series	CADline
email
last changed	2003/06/02 13:58

_id	016a
authors	Balachandran, M. B. and Gero, John S.
year	1987
title	A Knowledge-based Approach to Mathematical Design Modeling and Optimization
source	engineering Optimization. 1987. vol. 12: pp. 91-115
summary	Optimization is a well understood process in design domains. Designers formulate their design problems as single criterion or multicriteria optimization problems and then select an appropriate optimization algorithm to search for the optimal values for the design variables. The formulation and algorithm selection procedures have been considered to be activities which relied on substantive human knowledge. This paper describes a computer system, OPTIMA, which formulates design optimization problems from a pseudo-English description into canonical algebraic expressions. It then recognizes the formulation and selects appropriate algorithm(s) for its solution. Finally, it runs the selected algorithm(s) and sends the results back to the original descriptions. Areas of expert knowledge involved in carrying out the above tasks are identified. Such knowledge is explicitly encoded in the system. The basic philosophy and key features of the system are described and are illustrated with examples
keywords	structures, algorithms, knowledge base, systems, optimization, engineering
series	CADline
email
last changed	2003/06/02 13:58

_id	08a1
authors	Balachandran, M.B. and Gero, John S.
year	1987
title	A Knowledge-based Graphical Interface for Structural Design
source	Southampton: CM Publications, 1987. pp. 335-346
summary	This paper describes a knowledge-based graphical interface for the domain of structural engineering. The key aspects of the system include graphics interpretation, feature extraction of graphic objects and the identification of the entity itself. Details of the implementation of a prototype system using Prolog and C are provided. The domain knowledge is represented as frames. Examples are given to illustrate the performance of the system
keywords	structures, user interface, knowledge base, systems, design, engineering, computer graphics, frames
series	CADline
email
last changed	2003/06/02 13:58

_id	c568
authors	Balachandran, M.B. and John S. Gero
year	1987
title	A Model for Knowledge Based Graphical Interfaces
source	AI '87: Proceedings of the Australian Joint Artificial Intelligence Conference. 1987. pp. 505-521. Also published in Artificial Intelligence Developments and Applications edited by J. S. Gero and R Stanton, North-Holland Pub. 1988. -- CADLINE has abstract only.
summary	This paper describes a model for knowledge-based graphical interface which incorporates a variety of knowledge of the domain of application. The key issues considered include graphics interpretation, extraction of features of graphics objects and identification of prototype objects. The role of such knowledge-based interfaces in computer-aided design is discussed. A prototype system developed in Prolog and C is described and its application in the domain of structural engineering is demonstrated
keywords	user interface, computer graphics, knowledge base, systems, civil engineering, structures
series	CADline
email
last changed	2003/06/02 13:58

_id	c89d
authors	Bancroft, Pamela J.
year	1987
title	The Integration of Computing into Architectural Education Through Computer Literate Faculty
source	Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 109-120
doi	https://doi.org/10.52842/conf.acadia.1987.109
summary	This paper discusses the apparent correlation between faculty computer literacy and the success of integrating computing into architectural education. Relevant questions of a 1985 national survey which was conducted to study the historical development of faculty computer utilization are analyzed and interpreted. The survey results are then used as the basis for a series of recommendations given for increasing computer literacy among faculty in architectural schools, thus increasing the integration of computing.
series	ACADIA
last changed	2022/06/07 07:54

_id	2832
authors	Baraniak, David W.
year	1987
title	Automatic Data Capture: Scanners Offer a Cost-effective Solution
source	computer Graphics World November, 1987. vol. 10: pp. 93-94, 97 : ill.
summary	table. In order to decide whether today's scanner deliver the price and performance a particular CAAD application demand, the author lists vendors, scanner type, raster to vector conversion editing raster vector, data exchange format and compares them
keywords	hardware, CAD, scanning, business
series	CADline
last changed	2003/06/02 13:58

_id	b9d1
authors	Barlas, Adnan
year	1987
title	STAGED BUILDING IN HIGH RISE HOUSING
source	Proceedings of the 1st European Full-Scale Workshop Conference / ISBN 87-88373-20-7 / Copenhagen (Denmark) 15-16 January 1987, pp. 53-56
summary	Since 1950s Turkey is experiencing a high rate of urbanization as a result of the inflow of Iarge number of rural immigrants to the urban areas, in addition to the natural urban population growth. This high level of urbanization gave rise to various burdens and problems within the urban areas. One of these problems.and the most important,is seen in the housing sector. The increasing level of housing need of the urban society could not be met by, the available urban housing a stock. Thus, there emerged a different type of production at the fringes of the urban areas, which is called as "squatter"; being completely unauthorized. In addition to the rapid urbanization -he general deficiencies in the Turkish economy have also effected the urban case. The rents and the prices of the dwelling units in the authorized stock increased to such level that, a great portion of the urban households with low and lower middle incomes could not afford to buy or rent a dwelling unit from the authorized stock. The situation is still the same now.
keywords	Full-scale Modeling, Model Simulation, Real Environments
series	other
type	normal paper
more	http://info.tuwien.ac.at/efa
last changed	2004/05/04 15:07

_id	cf2011_p170
id	cf2011_p170
authors	Barros, Mário; Duarte José, Chaparro Bruno
year	2011
title	Thonet Chairs Design Grammar: a Step Towards the Mass Customization of Furniture
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 181-200.
summary	The paper presents the first phase of research currently under development that is focused on encoding Thonet design style into a generative design system using a shape grammar. The ultimate goal of the work is the design and production of customizable chairs using computer assisted tools, establishing a feasible practical model of the paradigm of mass customization (Davis, 1987). The current research step encompasses the following three steps: (1) codification of the rules describing Thonet design style into a shape grammar; (2) implementing the grammar into a computer tool as parametric design; and (3) rapid prototyping of customized chair designs within the style. Future phases will address the transformation of the Thonet’s grammar to create a new style and the production of real chair designs in this style using computer aided manufacturing. Beginning in the 1830’s, Austrian furniture designer Michael Thonet began experimenting with forming steam beech, in order to produce lighter furniture using fewer components, when compared with the standards of the time. Using the same construction principles and standardized elements, Thonet produced different chairs designs with a strong formal resemblance, creating his own design language. The kit assembly principle, the reduced number of elements, industrial efficiency, and the modular approach to furniture design as a system of interchangeable elements that may be used to assemble different objects enable him to become a pioneer of mass production (Noblet, 1993). The most paradigmatic example of the described vision of furniture design is the chair No. 14 produced in 1858, composed of six structural elements. Due to its simplicity, lightness, ability to be stored in flat and cubic packaging for individual of collective transportation, respectively, No. 14 became one of the most sold chairs worldwide, and it is still in production nowadays. Iconic examples of mass production are formally studied to provide insights to mass customization studies. The study of the shape grammar for the generation of Thonet chairs aimed to ensure rules that would make possible the reproduction of the selected corpus, as well as allow for the generation of new chairs within the developed grammar. Due to the wide variety of Thonet chairs, six chairs were randomly chosen to infer the grammar and then this was fine tuned by checking whether it could account for the generation of other designs not in the original corpus. Shape grammars (Stiny and Gips, 1972) have been used with sucesss both in the analysis as in the synthesis of designs at different scales, from product design to building and urban design. In particular, the use of shape grammars has been efficient in the characterization of objects’ styles and in the generation of new designs within the analyzed style, and it makes design rules amenable to computers implementation (Duarte, 2005). The literature includes one other example of a grammar for chair design by Knight (1980). In the second step of the current research phase, the outlined shape grammar was implemented into a computer program, to assist the designer in conceiving and producing customized chairs using a digital design process. This implementation was developed in Catia by converting the grammar into an equivalent parametric design model. In the third phase, physical models of existing and new chair designs were produced using rapid prototyping. The paper describes the grammar, its computer implementation as a parametric model, and the rapid prototyping of physical models. The generative potential of the proposed digital process is discussed in the context of enabling the mass customization of furniture. The role of the furniture designer in the new paradigm and ideas for further work also are discussed.
keywords	Thonet; furniture design; chair; digital design process; parametric design; shape grammar
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	963b
authors	Bartels, R.H., Beatty, J.C. and Barsky, B.A.
year	1987
title	An Introduction to Splines for Use in Computer Graphics and Geometric Modeling
source	Morgan Kaufmann Publishers, Los Altos, CA
summary	The most basic output primitives in every computer graphics library are "lineSegment()" and "Polygon()", ortheir equivalents. These are, of course, sufficent in the sense that any curved line or surface can be arbitrarrily well approximated by straight line segments or planar polygons, but in many contexts that is not enough. Such approximations often require large amounts of data to obtain satifactory smoothness, and they are awkward to manipulate. Then too, even with the the most sophisticated continous shading models, polygonaltechniques can resultin visually ojectionable images. Mach bands may be apparent at the borders between adjacent polygons, and there is always a telltale angularity to polygonal silhouettes. Hence many modeling systems are augmented by circles, spheres, cylinders, etc. and allow such simple primitives to be combined to form quite complex objects.
series	other
last changed	2003/04/23 15:14

_id	fbcd
authors	Bayazit, N.
year	1987
title	Theoretical Basis of a Computer-Aided Design Education and Research Laboratory
source	Design Studies, Vol 8, No: 3, July, pp.138-149
summary	This paper investigates the theoretical basis of computer-aided design (CAD) education and research relevant to the establishment of a micro-CAD laboratory in Istanbul Technical University (ITU). The initial paragraphs of the paper are allocated to the CAD systems' theoretical considerations. In the second part an interactive education and research model is developed. Applicability of this model through professional practice is discussed and examples of research findings are explained.
series	journal paper
last changed	2003/04/23 15:14

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