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_id 4910
authors Rasdorf, William J. and Watson, Bruce R.
year 1987
title A Knowledge-Based Approach to Engineering Information Retrieval and Management
source London, UK: Chapman and Hall Ltd., 1987. pp. 267-295
summary Building design, construction, operation, maintenance, and control are all processes that have achieved various levels of computer use. Although the degree of computerization varies significantly, one common aspect of the computing needs of each process is an abundance of data in the form of tables, standards, project definition information, catalogs, etc. In most cases this data is stored in files which are independently used for input to stand-alone single-process application programs, such as a structural analysis application. The utility of these independent files is therefore limited to a single application. As concepts of integration of engineering applications evolved, the use of databases and database management systems (DBMS) increased. A number of issues of significant concern emerged. First, there is a need to retrieve data from many independent, possibly widely distributed databases. Second, there is a need for a uniform means of doing so. Third, such databases routinely undergo dynamic change. Changes in a database schema commonly result from the evolution of a design, from changes in the design process itself, and from changes in other subsequent downstream processes. Such continuing changes must be reflected in the database schemas and they subsequently require that application programs be updated and that online users be educated on a continuing basis. This chapter describes a knowledge-based expert system that provides access to and integration of the many underlying databases needed to support the building design/construction process. The unique aspect of the expert system presented in this chapter is its capture of the knowledge that an experienced human user incorporates in his search for data in a database, i.e., it seeks to identify and use the generic knowledge needed to operate a DBMS to retrieve data. This knowledge is used by the interface to enable both the online users and the application programs to request data without knowing the data's location or precisely how to ask for it. Further, the interface makes use of mechanisms that allow the user to request data without knowing the exact name by which it is stored in the database. In doing so it formalizes the levels of complexity of that knowledge and points out the multidisciplinary applications of the research results
keywords civil engineering, knowledge base, database, expert systems
series CADline
last changed 2003/06/02 10:24

_id e26f
authors Kalay, Y. (ed.)
year 1987
title Computability of Design
source New York: Wiley & Sons
summary Computer-aided design (CAD) has promised to transform the art and science of architectural design. Yet, despite some significant achievements in the past 3 decades, it has so far failed to do so. This stimulating volume, derived from a symposium held at SUNY, Buffalo in December 1986, explores the reasons why design is so difficult to support by computational means, and what can be done to alleviate this difficulty. Written by an interdisciplinary panel of experts, it presents a varied and comprehensive view of the ways creative design processes can be modelled. The contributors do not all reach the same conclusions, which makes this book lively reading. Topics are arranged into four parts: constructing models of the design process, the computational representation of design knowledge (including spatial information and implicit design intent), methods for computing the design process as a whole (including mathematical programming, expert systems, and shape grammars), and the integration of CAD with traditional design practices.
series other
last changed 2003/04/23 15:14

_id 0b76
authors Kalay, Yehuda E. (editor)
year 1987
title Computability of Design
source xvii, 363 p. : ill New York: Wiley & Sons, 1987. includes bibliographies and index --- (Principle of Computer-aided Design)
summary Computer-aided design has promised to transform the art and science of architectural design. Yet despite some significant achievements, it has so far failed to do so. The book explores reasons why design is so difficult to support by computational means and what can be done to alleviate this difficulty. Written by an interdisciplinary panel of experts the book presents a varied and comprehensive view of the ways creative design processes can be modeled mathematically
keywords CAD, design process, architecture, design methods, knowledge, representation, practice, evaluation, analysis
series CADline
email
last changed 2003/06/02 13:58

_id e290
authors Kalay, Yehuda E.
year 1987
title Worldview : An Integrated Geometric Modeling/Drafting System
source IEEE Computer Graphics and Applications. February, 1987. vol. 7: pp. 36-46 : ill. (some col.). includes bibliography
summary Worldview is a computer-aided architectural and engineering design system that combines the power of geometric modeling utilities with the intuitive design and communication capabilities of drafting utilities. This article describes the basic design concepts and implementation of the system, achieved by representing the designed artifact nonredundantly in a three-dimensional 'world' and manipulating it through multiple two-dimensional 'views.' The world consists of a collection of shapes that store all the formative information pertinent to the designed artifact, while the views consist of images of selected shapes, generated through particular two-way mapping transforms. Several views that depict the same set of shapes through different transforms can be displayed simultaneously, using multiple, dynamic, user- defined windows, thereby enabling addressability of points in the 3D world. Views also include such design and communication aids as dimension lines, construction lines, annotations, and graphic symbols to enhance the visual content of the images without encumbering the representation of the shapes themselves. Modifications applied to the shapes through any view are immediately apparent in all other views in which the shapes are imaged. The shapes are represented by a data structure based on the Hybrid Edge data model, which facilitates the integration of points, lines, surfaces, and volumetric bodies into one formative hierarchy. The integration of drafting and modeling simplifies the use of powerful modeling utilities by designers, facilitates the communication of the designed artifact, and enhances the integrity of the design as a whole
keywords drafting, systems, geometric modeling, representation, user interface, computer graphics, CAD, architecture, engineering
series CADline
email
last changed 2003/06/02 10:24

_id 889f
authors Krantz, Birgit
year 1987
title THE FULL-SCALE LABORATORY IN LUND
source Proceedings of the 1st European Full-Scale Workshop Conference / ISBN 87-88373-20-7 / Copenhagen (Denmark) 15-16 January 1987, pp. 7-17
summary An often repeated statement of the nature of the result of our general construction activities in general says that any building and environmental arrangement could be seen as a pure experimental product. The building, in this sense, is nothing but one single full-scale experiment started afresh each time, unfortunately, we could add, without the consistent follow-up measures. In view of this way of understanding the building process you might deduce the interest in a more anticipating attitude.and behaviour, namely the mock-up method or the full-scale design process, based on the philosophy that in a situation of uncertainty you had better try before than after. An underlying presumption is, however, that generally there is a lack of knowledge about the consequences by transferring spatial and design ideas from. drawings to one to one realization. A lack of knowledge not only-among lay, people but also among professionals. The mock-up practice can also to the same extent be derived from a pure investigative interest with the aim to virtually analyze general or specific problems in the* relationship man and the built environment, particularly buildings and spatial settings on the micro level. That means the use of the full-scale method for the search for basic design knowledge. In this sense the mock-up activities started in Sweden.
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 15:09

_id diss_kuo
id diss_kuo
authors Kuo, C.J.
year 1999
title Unsupervised Dynamic Concurrent Computer-Aided Design Assistant
source Los Angeles: UCLA
summary The increasing capability of computer-aided architectural design systems has strengthened the role that the computer plays in the workplace. Due to the complexity of developing new techniques and research, these systems are undertaken mostly by scientists and engineers without significant architectural input (Willey, 1991). The design concept of these systems may be based on a well-defined and well-understood process, which is not yet realized in architectural design (Galle, 1994). The output of such research may not be easily adapted into the design process. Most of the techniques assume a complete understanding of the design space (Gero and Maher, 1987) (Willey, 1991). The description or construction of the design space is always time and space consuming, and the result can never be complete due to the ever-changing nature of architectural design. This research intends to initiate a solution for the above problems. The proposed system is an unsupervised-dynamic-concurrent-computer-aided-design assistant. The “unsupervised” means the learning process is not supervised by the user because it is against the designer's nature to “think-aloud” in the design studio and it also increases the work load. It is dynamic because the size of the knowledge base is constantly changing. Concurrent means that there are multiple procedures active simultaneously. This research focuses on learning the operational knowledge from an individual designer and reapplying it in future designs. A computer system for this experiment is constructed. It is capable of The preliminary result shows a positive feedback from test subjects. The purpose of this research is to suggest a potent computational frame within which future developments may flourish.
series thesis:PhD
last changed 2003/11/28 07:37

_id 0a9c
authors Ozel, Filiz
year 1987
title The Computer Model "BGRAF": A Cognitive Approach to Emergency Egress Simulation
source University of Michigan
summary During the past decade, fire safety researchers have come to the understanding that human factors in fires play an important role in controlling the spread of fire; and in decreasing the number of fire casualties in buildings. With the current developments in computer technology, computer modeling of human behavior in fires emerged as an effective method of research. Such computer modeling techniques offered the advantage of being able to experiment with hypothetical fires in buildings without Note endangering human life. Consequently, a study to develop a computer model that will simulate the emergency egress behavior of people in fires was undertaken. Changes in the information processing capacity of the individual as a result of time pressure and stress was considered as part of the emergency egress decision process. Theories from environmental psychology identified a range of cognitive factors, such as visual access in buildings, architectural differentiation, signage and plan configuration that affect way finding and route selection in buildings. These factors needed to be incorporated into emergency egress models. The model was based on the integrated building data base of the CAD system developed at the University of Michigan, Architecture and Planning Lab., which provided a comprehensive building definition, and allowed both graphic and tabular output. Two actual fire incidences were simulated as part of the validation study. These studies have stressed the importance of the cognitive aspects of the physical environment as a factor in emergency egress. A goal structure that represented the total decision process during fires was incorporated into the model. This structure allowed the inputting and testing of a variety of goal structures by using actions as model blocks. The objectives of the model developed in this study can best be summarized as to study and eventually to predict the route selection and exiting behavior in fires, with the purpose of using such information in making building design and code development decisions, and in suggesting action sequences that will best support the safety of the occupants of a building under different emergency conditions.
series thesis:PhD
email
last changed 2003/02/12 22:37

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

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

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

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

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

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

_id 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 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 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 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

_id 409f
authors Becker, Joseph D.
year 1987
title Arabic Word Processing
source communications of the ACM. July, 1987. vol. 30: pp. 600-610 : ill. includes bibliography
summary The technology of word processing in the Middle East recently developed a word processing software that can correctly format the cursive, interacting letters of the Arabic script. Moreover, new layout procedures can automatically intermix right-to-left Arabic or Hebrew writing with left-to-right text in European or other languages. The design presented in this article is embodied in the Xerox View Point Documenter, but its principles apply equally well to any Arabic desktop publishing
keywords software, computer graphics
series CADline
last changed 2003/06/02 13:58

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