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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Hits 1 to 20 of 206

_id 2bcc
authors Mark, Earl
year 1989
title A Contrast in Pedagogy: The M.l.T. Versus Harvard Approach to Computer Aided Design
doi https://doi.org/10.52842/conf.ecaade.1989.x.d8b
source CAAD: Education - Research and Practice [eCAADe Conference Proceedings / ISBN 87-982875-2-4] Aarhus (Denmark) 21-23 September 1989, pp. 5.1.1-5.1.9
summary This is a period of relative detente among academics in the field of computers and architecture, advocating the use of computers in a design studio is today received more politely than, as in the past, when it was received like a declaration of war. Among some research groups at M.I.T. and Harvard to first engage In this field, the approaches were so dissimilar to one another that they could be considered as constituting separate schools of thought. Over time, however, a number of paths have led to a similar direction, if not agreement among principal investigators. The lack of sharply competing ideologies today may be a little less exciting: however, the enormous growth of the academic discipline seems now to allow for a fruitful exchange of ideas between positions that no longer seem mutually exclusive.

Two views are important, among others, at M.I.T. and Harvard. The classic M.I.T. view looks upon the AI Lab as a microcosm for examining how architects think. Underlying this view is the position of 'lets examine the way architects think about design and build tools which can reflect that process'. Another point of view, as expressed at Harvard, is speculative on what architects seem to do in design practice and education, rather than speculative on the nature of thinking per se. Both views seem ultimately to be concerned with representing architectural design knowledge within computers. And in the rob of computers as a design medium. This paper examines how the M.I.T. view and the Harvard view have superficially been associated with separate research directions. As these contrasting points of view incorporate many common themes. The author finds that it may be possible to take an eclectic position in teaching computer aided design.

keywords Constraints, Shape Grammars, Representational World, Emergent Form. Design Thinking, Design Habit
series eCAADe
email
more http://palladio.arch.Virginia.EDU/~arch-con/exhibit/
last changed 2022/06/07 07:50

_id 450c
authors Akin, Ömer
year 1990
title Computational Design Instruction: Toward a Pedagogy
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 302-316
summary The computer offers enormous potential both in and out of the classroom that is realized only in limited ways through the applications available to us today. In the early days of the computer it was generally argued that it would replace the architect. When this idea became obsolete, the prevailing opinion of proponents and opponents alike shifted to the notion of the computer as merely adding to present design capabilities. This idea is so ingrained in our thinking that we still speak of "aiding" design with computers. It is clear to those who grasp the real potential of this still new technology - as in the case of many other major technological innovations - that it continues to change the way we design, rather than to merely augment or replace human designers. In the classroom the computer has the potential to radically change three fundamental ingredients: student, instruction, and instructor. It is obvious that changes of this kind spell out a commensurate change in design pedagogy. If the computer is going to be more than a passive instrument in the design studio, then design pedagogy will have to be changed, fundamentally. While the practice of computing in the studio continues to be a significant I aspect of architectural education, articulation of viable pedagogy for use in the design studio is truly rare. In this paper the question of pedagogy in the CAD studio will be considered first. Then one particular design studio taught during Fall 1988 at Carnegie Mellon University will be presented. Finally, we shall return to issues of change in the student, instruction, and instructor, as highlighted by this particular experience.
series CAAD Futures
email
last changed 2003/11/21 15:15

_id a74a
authors Asanowicz, Alexander
year 1989
title Four Easy Questions
doi https://doi.org/10.52842/conf.ecaade.1989.x.x8v
source CAAD: Education - Research and Practice [eCAADe Conference Proceedings / ISBN 87-982875-2-4] Aarhus (Denmark) 21-23 September 1989, pp. 9.18.1-9.18.4
summary Should we teach CAAD? - yes, but why? Answer to this question is clear too. Question three - "when?" - on the 5, 6 and 7 term. Why so rate? - it is a compromise because "Architecture is an art" and students of architecture should know how to make a project without computers. How to teach CAAD? - we should teach haw to use professional computer programs and not programming. We must work out a new manual for architects. It should be constructed in such a way as to correspond to consecutive steps of the architectural design process.
keywords CAAD, Manuals, Architectural Design Process
series eCAADe
email
last changed 2022/06/07 07:50

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

_id maver_065
id maver_065
authors Clarke, J. and Maver, T.W.
year 1989
title Advanced Design Tools for Energy Conscious Design
source Paper to Royal Society
summary This paper is concerned with building energy simulation and the prospects for the delivery of a new generation of simulation based, valid and easy to use design tools to the building construction industry. The issues relating to design tools development and use are discussed and the present state-of-the-art is described. Some medium to long term developments are then identified, including an intelligent front end and the notion of an advanced machine environment for the construction and maintenance of future models concerned with building energy and environment. The mechanisms for technology transfer are identified and experiences recounted of the first two years operation of an innovatory energy design advisory service. The paper finishes with a look to the future of the information technologies in building design.
series other
email
last changed 2003/09/03 15:01

_id a235
authors Danahy, John W.
year 1990
title Irises in a Landscape: An Experiment in Dynamic Interaction and Teaching Design Studio
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 363-376
summary The capacity of most computer-aided design systems is inadequate to represent landscape architectural ideas and compute landscape scenes quickly. As part of our teaching agenda, we decided to write software for the Silicon Graphics Iris workstations to tackle this problem directly. This paper begins with a discussion of our concerns about the use of CAD tools in the representation of landscape architectural space. Secondly, we discuss the approach that Toronto takes to computing and teaching with particular emphasis on the use of computers to support an integrated representational work environment. Finally, a fourth-year design studio that used our software is reviewed. Static illustrations of the system are presented here, although there is a videotape that demonstrates the dynamic nature of the system.
series CAAD Futures
email
last changed 2003/05/16 20:58

_id e365
authors Danahy, John
year 1989
title Intuition & Computer Visualization in an Urban Design Studio
doi https://doi.org/10.52842/conf.ecaade.1989.x.i5v
source CAAD: Education - Research and Practice [eCAADe Conference Proceedings / ISBN 87-982875-2-4] Aarhus (Denmark) 21-23 September 1989, pp. 4.2.1-4.2.6
summary This paper will present prototypical software being used in the teaching of urban design to students and for use by professionals in the early stages of a project. The system is intended to support a heuristic approach to design. That is, it supports a process of refining ideas and understandings through a process of trial and error. The support or aid to design comes in the form of a didactic real-time programme. Its power lies in its ability to provide instantaneous response to operations on the data that can allow one to develop three-dimensional spatial ideas in an intuitively driven manner. This condition appears to occur for both novice and expert computer operators.

The presentation will present our experience to-date in using conventional computer graphic tools to represent design ideas and contrast it with a video demonstration of ow prototypical dynamic urban design modelling software for the Silicon Graphics IRIS computers.

keywords Intuition, Visualization, Urban Design, Modelling, Real-Time
series eCAADe
email
last changed 2022/06/07 07:50

_id 298e
authors Dave, Bharat and Woodbury, Robert
year 1990
title Computer Modeling: A First Course in Design Computing
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 61-76
summary Computation in design has long been a focus in our department. In recent years our faculty has paid particular attention to the use of computation in professional architectural education. The result is a shared vision of computers in the curriculum [Woodbury 1985] and a set of courses, some with considerable historyland others just now being initiated. We (Dave and Woodbury) have jointly developed and at various times over the last seven years have taught Computer Modeling, the most introductory of these courses. This is a required course for all the incoming freshmen students in the department. In this paper we describe Computer Modeling: its context, the issues and topics it addresses, the tasks it requires of students, and the questions and opportunities that it raises. Computer Modeling is a course about concepts, about ways of explicitly understanding design and its relation to computation. Procedural skills and algorithmic problem solving techniques are given only secondary emphasis. In essential terms, the course is about models, of design processes, of designed objects, of computation and of computational design. Its lessons are intended to communicate a structure of such models to students and through this structure to demonstrate a relationship between computation and design. It is hoped that this structure can be used as a framework, around which students can continue to develop an understanding of computers in design.
series CAAD Futures
email
last changed 2003/05/16 20:58

_id b66a
authors Dvorak, Robert W.
year 1989
title CAD Tools for Systems Theory and Bottom Up Design
doi https://doi.org/10.52842/conf.acadia.1989.209
source New Ideas and Directions for the 1990’s [ACADIA Conference Proceedings] Gainsville (Florida - USA) 27-29 October 1989, pp. 209-226
summary The use of CAD is investigated in the teaching of systems theory to a fourth year group of design students. A comparison is made between the CAD group using MacArchitrion and a non-CAD group using traditional design methods. The paper includes a discussion of the meaning of systems design theories, relates the CAD and non-CAD student design methods and illustrates the results. It also includes recommendations for improvements so the computer can become more effective in this type of design teaching. Finally, it concludes with recommendations from the students at the end of the semester project. The basic premise for the CAD design group is that computers should encourage students to understand and use systems design theory.
series ACADIA
last changed 2022/06/07 07:55

_id 0f73
authors Ervin, Stephen M.
year 1990
title Designing with Diagrams: A Role for Computing in Design Education and Exploration
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 107-122
summary Environmental designers, design educators and design students using computers are a constituency with a set of requirements for database structure and flexibility, for knowledge representation and inference mechanisms, and for both graphical and non-graphical operations, that are now articulatable and to-date largely unmet. This is especially so in the area called 'preliminary' or 'schematic' design, where our requirements are related to, but different from, those of our colleagues in mechanical and electrical engineering, whose needs have dominated the notable developments in this area. One manifestation of these needs is in the peculiar form of graphics called diagrams , and the ways in which environmental designers (architects, landscape architects., urban designers) use them. Our diagrams are both similar to and different from structural, circuit, or logical diagrams in important ways. These similarities and differences yield basic insights into designing and design knowledge, and provide guidance for some necessary steps in the development of the next generation of CAD systems. Diagrams as a form of knowledge representation have received little scrutiny in the literature of graphic representation and computer graphics. In the following sections I present an overview of the theoretical basis for distinguishing and using diagrams; examine some of the computational requirements for a system of computer-aided diagramming; describe a prototype implementation called CBD (Constraint Based Diagrammer) and illustrate one example of its use; and speculate on the implications and potential applications of these ideas in computer-aided design education.
series CAAD Futures
last changed 1999/04/03 17:58

_id a672
authors Flemming, Ulrich
year 1990
title Syntactic Structures in Architecture: Teaching Composition with Computer Assistance
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 31-48
summary The present paper outlines a plan for the teaching of architectural composition with computer assistance.The approach is to introduce students to a series of architectural languages characterized by a vocabulary of elements and a grammar whose rules indicate how these elements can be placed in space. Exercises with each language include the analysis of precedents; the generation of forms using a given rule set; and follow-up studies with an expanded rule set. The paper introduces languages and exercises through illustrative examples. This architectural content can be taught in the traditional way. The use of computers is motivated by expectations which are stated, and some basic requirements for the needed software are listed. Work to develop this software has started.
series CAAD Futures
email
last changed 2003/02/26 17:24

_id 8cff
authors Fridqvist, Sverker
year 1989
title Computers as a Creative Tool in Architecture
doi https://doi.org/10.52842/conf.ecaade.1989.x.k1l
source CAAD: Education - Research and Practice [eCAADe Conference Proceedings / ISBN 87-982875-2-4] Aarhus (Denmark) 21-23 September 1989, pp. 9.6.1-9.6.4
summary The School of Architecture at Lund Institute of Technology was augmented by the establishment of the Computer Studio in 1987. As a result the school now has a device for teaching and research in the architects' use of computers. We are now conducting several research projects as well as courses and an education project. The third and fourth years of the education at the school of architecture are arranged as education projects instead of traditional lecturing. The students choose from projects that are organised by different departments at the School of Architecture. The issue is that the students will ask for instruction when felt needed, and that learning will therefore be more efficient. The Computer Studio has conducted such a project during the first half of 1989. We have tried to encourage the students to use our different computers and programs in new and creative ways. One of the issues of the computer project is to teach the students how computers are used at the architects offices today as well as expected future developments. The students shall be acquainted well enough with present and future possibilities to make good choices when deciding upon buying computers for architectural use. Another issue is to develop new ways of making and presenting architecture by using computers. As a group the teachers at the school of architecture have a very restrictive attitude towards the use of computers. We hope that our project will open their minds for the possibilities of computers, and to engage them in the development of new ways to use computers creatively in architecture. An interesting question is if the use of computers will yield different outcomes of he students' work than traditional methods. An object for research is whether the added possibilities of considering different aspects of he design by using a computer will make for higher quality of the results.

series eCAADe
email
more http://www.caad.lth.se/
last changed 2022/06/07 07:50

_id acadia06_079
id acadia06_079
authors Kumar, Shilpi
year 2006
title Architecture and Industrial Design A Convergent Process for Design
doi https://doi.org/10.52842/conf.acadia.2006.079
source Synthetic Landscapes [Proceedings of the 25th Annual Conference of the Association for Computer-Aided Design in Architecture] pp. 79-94
summary The use of technology has grown with the way design professions have evolved over time. Changing needs, desires of comfort, and perceptions of the consumers have led to a distinct improvement in the design of both product and architecture. The use of the digital media and emerging technologies has brought a dramatic change to the design process allowing us to view, feel, and mould a virtual object at every stage of design, development, and engineering. Change is often quick and easy since a virtual product does not inherently carry the biases of its physical counterpart. In order to communicate ideas across the team, digital processes are also used to bring together opinions, experiences, and perspectives. These methods encourage decision making based on information rather than prejudice or instinct. Thus, digital exchanges (technology) impact firm strategies at three levels: product, process, and administrative or support activities (Adler 1989).Digital tools for design exchange in Industrial Design (ID) began much earlier than many other professions. The profession of Architecture is also slowly moving to a similar model with digital exchange finding increasing prevalence in drawing, modeling, performance simulation, design collaboration, construction management, and building fabrication. The biggest problem is the disintegrated use of technology in the architectural profession without a strategy toward streamlining the design process from conception to fabrication. In this paper we investigate how the use of technology has evolved in the professions of Industrial Design and Architecture comparatively in their product, process, and support activities. Further, we will present a set of guidelines that will help architects in the convergence of design process, helping in a more efficient work flow with a strategic use of digital technology.
series ACADIA
email
last changed 2022/06/07 07:52

_id c903
authors Mark, Earl
year 1990
title Case Studies in Moviemaking and Computer-Aided Design
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 393-412
summary A movie which is developed from site location video, sync sound, and computer graphics animation can provide a highly convincing simulation of reality. A movie that conveys a sense of the space, materials and juxtaposition of objects of a proposed architectural design provides a special kind of realism, where the representation may be of a proposed building that exists only within the mind of an architect. For an experienced architect, however, the movie may not provide a good surrogate experience for what it feels like to actually be within the architectural space. In these case studies, a few projects that combine moviemaking and computer-aided design technologies are examined. These projects were completed using a combination of resources at the MIT School of Architecture and Planning and the Harvard Graduate School of Design. The integrated use of these media is presented as conceptualized with the Electronic Design Studio, a research project that has been supported over the past five years by Project Athena at MIT. The impact of movies and computer-aided design on the perception of architectural space is also reported- based on a pilot study of twenty architectural students.
series CAAD Futures
email
last changed 2003/05/16 20:58

_id 8bf3
authors McCullough, M., Mitchell, W.J. and Purcell, P. (Eds.)
year 1990
title The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [Conference Proceedings]
source International Conference on Computer-Aided Architectural Design 1989/ ISBN 0-262-13254-0] (Massachusetts / USA), 1989, 505 p.
summary Design is the computation of shape information that is needed to guide fabrication or construction of artifacts. But it is not so straightforward as, say, the computation of numerical information required to balance a checkbook. This is partly because algebras of shapes are not as well understood and precisely formalized as algebras of numbers, partly because the rules for carrying out shape computations tend to be fluid and ill defined and partly because the predicates that must be satisfied to achieve successful termination are often complex and difficult to specify. For centuries architects have carried out shape computations by hand, using informal procedures and the simplest of tools. Over the last two decades though, they have made increasing use of more formal procedures executed by computers. It is still too early to be sure of the gains and losses that follow from this development, but there is no doubt that it raises some challenging questions of architectural theory and some perplexing issues for those concerned with the future of architectural education. This book frames those issues and provides a diversity of perspectives on them. Its contents were initially presented at the CAAD Futures 89 Conference-an international gathering of researchers and teachers in the field of computer-aided architectural design which was jointly sponsored by the Harvard Graduate School of Design and the MIT Department of Architecture and held in Cambridge, Massachusetts, in July 1989. There are four major sections: Theoretical Foundations, Knowledge-Based Design Tools, Information Delivery Systems, and Case Studies: Electronic Media in the Design Studio. In a representative collection of current views, over thirty extensively illustrated papers discuss the experiences of universities in the USA, Europe, Japan, Israel, Canada, and Australia, articulate present theoretical and practical concerns, provide criticism of media and methods, and suggest directions for the future. Architectural educators and architects concerned with the effect of computer technology on the design process will find here an indispensable reference and a rich source of ideas. This book was itself prepared in an electronic design studio. Composition and typography, most image collection and placement, and such editing as was practical within this publishing format, were all performed digitally using Macintosh computers at the Harvard Graduate School of Design during a period of a few weeks in 1989.
series CAAD Futures
email
last changed 2003/05/16 20:58

_id 435a
authors Mitchell, William J.
year 1990
title Afterword: The Design Studio of The Future
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 479-494
summary Things began to change in the mid-1940s, though architects hardly noticed. Scientists and engineers started to speculate that the new electronic technologies which had emerged in the wartime years would profoundly change the character of intellectual work. Vannevar Bush (1945) imagined a device called the Memex, which would function as a personal information server. By the 1950s computers were becoming a commercial reality, and in 1956 Fortune magazine published a remarkably prescient depiction of a machine that we can now recognize as a computer-aided design workstation complete with graphic input devices and a multi-window display showing different views of a three-dimensional object. These wonderful machines were never built, much less put to any practical use, but they established a powerful idea.
series CAAD Futures
email
last changed 2003/05/16 20:58

_id 2e50
authors Ozersay, Fevzi and Szalapaj, Peter
year 1999
title Theorising a Sustainable Computer Aided Architectural Education Model
doi https://doi.org/10.52842/conf.ecaade.1999.186
source Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 186-195
summary The dogmatic structure of architectural education has meant that the production and application of new educational theories, leading to educational models that use computer technology as their central medium of education, is still a relatively under-explored area. Partial models cannot deliver the expected bigger steps, but only bits and pieces. Curricula developments, at many schools of architecture, have been carried out within the closed circuit manner of architectural education, through expanding the traditional curricula and integrating computers into them. There is still no agreed curriculum in schools of architecture, which defines, at least conceptually, the use of computers within it. Do we really know what we are doing? In the words of Aart Bijl; 'If I want to know what I am doing, I need a separate description of my doing it, a theory' [Bijl, 1989]. The word 'sustainability' is defined as understanding the past and responding to the present with concern for the future. Applying this definition to architectural education, this paper aims to outline the necessity and the principles for the construction of a theory of a sustainable computer aided architectural education model, which could lead to an architectural education that is lasting.
keywords Architectural Education, Educational Theories, Computers, Sustainable Models
series eCAADe
email
last changed 2022/06/07 08:00

_id 2a8b
authors Purcell, Patrick and Applebaum Dan
year 1990
title Light Table: An Interface To Visual Information Systems
source The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 229-238
summary A primary aim of the Light Table project was to see if a combination of the optical laser disc, local area networks, and interactive videographic workstation technology could bring a major visual collection, (such as the Rotch Visual Collections of the Massachusetts Institute of Technology), to a campuswide population of undergraduate users. VIS (Visual Information System) is the name being given to the new genre of information technology. Much research and development effort is currently being applied to areas where the image has a special significance, for example in architecture and planning, in graphic and fine arts, in biology, in medicine, and in photography. One particular advance in the technology of VIS has been the facility to access visual information across a distributed computer system via LAN (Local Area Networks) and video delivery systems, (such as campus TV cable). This advance allows users to retrieve images from both local and remote sources, dispatching the image search through the LAN, and receiving the images back at their workstation via dedicated channels on the campus TV cable. Light Table is the title of a system that acts as a computer-based interactive videographic interface to a variety of visual information systems described in the body of this paper. It takes its name from the traditional, back- lit, translucent light table that lecturers use to assemble and view collections of slides for talks and seminars. The component of Light Table which is being reported in greatest detail here, a software outcome called Galatea, is a versatile and robust system capable of controlling video devices in a networked environment.
series CAAD Futures
last changed 1999/04/03 17:58

_id 1920
authors Riesbeck, C. and Schank, R.C.
year 1989
title Inside Case-based Reasoning
source Lawrence Erlbaum Associates, Hillsdale, NJ
summary Case-based reasoning, broadly construed, is the process of solving new problems based on the solutions of similar past problems. An auto mechanic who fixes an engine by recalling another car that exhibited similar symptoms is using case-based reasoning. A lawyer who advocates a particular outcome in a trial based on legal precedents is using case-based reasoning. It has been argued that case-based reasoning is not only a powerful method for computer reasoning, but also a pervasive behavior in everyday human problem solving. Case-based reasoning (CBR) has been formalized as a four-step process:N 1. Retrieve: Given a target problem, retrieve cases from memory that are relevant to solving it. A case consists of a problem, its solution, and, typically, annotations about how the solution was derived. For example, suppose Fred wants to prepare blueberry pancakes. Being a novice cook, the most relevant experience he can recall is one in which he successfully made plain pancakes. The procedure he followed for making the plain pancakes, together with justifications for decisions made along the way, constitutes Fred's retrieved case. 2. Reuse: Map the solution from the previous case to the target problem. This may involve adapting the solution as needed to fit the new situation. In the pancake example, Fred must adapt his retrieved solution to include the addition of blueberries. 3. Revise: Having mapped the previous solution to the target situation, test the new solution in the real world (or a simulation) and, if necessary, revise. Suppose Fred adapted his pancake solution by adding blueberries to the batter. After mixing, he discovers that the batter has turned blue -- an undesired effect. This suggests the following revision: delay the addition of blueberries until after the batter has been ladled into the pan. 4. Retain: After the solution has been successfully adapted to the target problem, store the resulting experience as a new case in memory. Fred, accordingly, records his newfound procedure for making blueberry pancakes, thereby enriching his set of stored experiences, and better preparing him for future pancake-making demands. At first glance, CBR may seem similar to the rule-induction algorithmsP of machine learning.N Like a rule-induction algorithm, CBR starts with a set of cases or training examples; it forms generalizations of these examples, albeit implicit ones, by identifying commonalities between a retrieved case and the target problem. For instance, when Fred mapped his procedure for plain pancakes to blueberry pancakes, he decided to use the same basic batter and frying method, thus implicitly generalizing the set of situations under which the batter and frying method can be used. The key difference, however, between the implicit generalization in CBR and the generalization in rule induction lies in when the generalization is made. A rule-induction algorithm draws its generalizations from a set of training examples before the target problem is even known; that is, it performs eager generalization. For instance, if a rule-induction algorithm were given recipes for plain pancakes, Dutch apple pancakes, and banana pancakes as its training examples, it would have to derive, at training time, a set of general rules for making all types of pancakes. It would not be until testing time that it would be given, say, the task of cooking blueberry pancakes. The difficulty for the rule-induction algorithm is in anticipating the different directions in which it should attempt to generalize its training examples. This is in contrast to CBR, which delays (implicit) generalization of its cases until testing time -- a strategy of lazy generalization. In the pancake example, CBR has already been given the target problem of cooking blueberry pancakes; thus it can generalize its cases exactly as needed to cover this situation. CBR therefore tends to be a good approach for rich, complex domains in which there are myriad ways to generalize a case.
series other
last changed 2003/04/23 15:14

_id 0155
authors Sastre, R., Puigdomènech, J., Jorge, J. and Cusido, A.
year 1989
title A Comprehensive Approach to the Tensile Structures Design
doi https://doi.org/10.52842/conf.ecaade.1989.x.l6e
source CAAD: Education - Research and Practice [eCAADe Conference Proceedings / ISBN 87-982875-2-4] Aarhus (Denmark) 21-23 September 1989, pp. 9.7.1-9.7.8
summary We present an integrated set of programs as CAD-tools for the design of shapes, evaluation of stress field and displacements of tensile membrane structures as well as a way to find out their surface patterns. In early times simulation of physical small models has been used to obtain a phenomenological view rather than quantitative information about these structures. A progressive way has been thought to make a comprehensive an practical approach to this kind of structure, characterized by its ability to offer displacements of long range. We propose like a first steep a rough simulation through elastic member models or elastic-surface models. An iterative process starts, based on visualizations through different peripheric devices (screened and plottered graphic outputs). This first steep ends by the formulation of an optimum geometric performances of the structure. The resulting geometry serves like a source structure for a more accurate calculus achieved by the Finite Element Method. Discretization of the continues structure is carried out in a network of tiny triangular elements. Finally, 3-D realism techniques has been used to represent the form adopted or stress field calculated or both at the same time, by an adequate use of the color attributes of the finite elements.

keywords Tensile structures, Finite Elements
series eCAADe
last changed 2022/06/07 07:50

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