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	48ee
authors	Paoluzzi, A., Pascucci, V. and Vicentino, M.
year	1993
title	PLASM Functional Approach to Design: Representation of Geometry
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 127-141
summary	PLASM (the Programming Language for Solid Modeling) is a solid-modeling-oriented design language strongly inspired by the functional language FL. In a PLASM environment, every geometrical object is generated by evaluating a suitable language expression which produces a polyhedral solid model. The language adopts a dimension-independent approach to geometry representation and algorithms. The generated objects are always geometrically consistent since the validity of geometry is guaranteed at a syntactical level. In fact (a) each well-formed expression is obtained by proper composition of well-formed subexpressions; (b) the evaluation of a well-formed (and polyhedrally typed) expression produces a valid solid model. In this paper, the representation scheme used in the language is given and some language scripts are shown and discussed.
keywords	Computer-Aided Architectural Design, Variational Geometry, Design Language, Geometric Design, Geometric Modeling, Functional Programming, Complexes, Polyhedra, Convex Cells
series	CAAD Futures
last changed	1999/04/07 12:03

_id	4c30
authors	Aura, Seppo
year	1993
title	Episode as a Unit of Analysis of Movement
source	Endoscopy as a Tool in Architecture [Proceedings of the 1st European Architectural Endoscopy Association Conference / ISBN 951-722-069-3] Tampere (Finland), 25-28 August 1993, pp. 53-66
summary	Everybody who has read his Gordon Cullen or his Edmund H. Bacon knows that movement has long been recognized as a factor in environmental planning in many ways. For example, in the traditional Japanese promenade garden the importance of movement has always been appreciated. The promenader gains an intense experience of the succession, variation and rhythm of the surrounding scene. The spaces and paths lead him from one stage to another. The spatial structure of the Japanese promenade garden, as well as of traditional Japanese architecture in general, is joined most intensively to time and motion. The environment is in relation to the flow of change in many sense, both concretely and existentially. Taking an example of western urban environment. Here perhaps the most marked sequential spaces are to be found in small medieval, mediterranean towns. Thanks to their organic growth, narrow and winding streets and the emphasis on public squares, most of them provide exciting experiences if the observer is only interested in seeing the townscape from the point of view of movement. There are also examples of this kind of environment in Finland. In old wooden towns like Porvoo and Rauma one can still find varied and rhythmic streetscapes and networks of streets and squares, together with a human scale and an almost timeless atmosphere. One could say that such an opportunity to experience spaces sequentially, or as serial visions, is an important dimension for us, especially as pedestrians. And as Gordon Cullen has shown there is in any urban environment much scope to heighten this experience. For example, by creating a sense of ’entering in’ some place, ’leaving for’, ’moving towards’, ’turning into’, ’walking through’ some place or ’following on’ the flow of spaces. Or, as Edmund H. Bacon has said, the departure point of good town planning should be that the successive towns spaces give rise to a flow of harmonic experiences: present experiences merge with earlier ones and become a step towards a future. Or, again in the words of Donald Appleyard, Kevin Lynch and John R. Myer: “The experience of a city is basically of a moving view, and this is the view we must understand if we wish to reform the look of our cities”.
keywords	Architectural Endoscopy
series	EAEA
more	http://info.tuwien.ac.at/eaea/
last changed	2005/09/09 10:43

_id	88c5
authors	Caturano, U.
year	1993
title	A Proposal of Iconic Map on Computer Aided Architectural Design: 3DIMCAAD
source	[eCAADe Conference Proceedings] Eindhoven (The Netherlands) 11-13 November 1993
doi	https://doi.org/10.52842/conf.ecaade.1993.x.g9p
summary	During the development of my graduation thesis I had to propose a subdivision of informatics technologies for architectural design into several research fields, each of them characterized by specific aims. This kind of subdivision was originally configured as an orientation tool inside the wide CAAD discipline, and only in a second time it took the features of a complete organization layout in which it is understandable not only the position of each single discipline in comparison with the others but, above all, the connections and interactions between them. The model, obtained as the result of many handlings but undefined yet, has been named 3DIMCaad (3 Dimensional Iconic Map on Computer Aided Architectural Design) and, in according to an initial hypothesis it could be regarded as a map of the sectors pointed out by my proposal, in fact, it is a iconic model of the connections and differences between the informatic main topics that I analysed. Every main topic is represented by a spheric nucleus linked to the others by a connection line (the ''pipe''), the dimension of which, quite generous, makes the observer understand the numerous interactions and exchange presents if two main topics are linked.
series	eCAADe
last changed	2022/06/07 07:50

_id	cf40
authors	Leyh, W.
year	1995
title	Automatic assembly of a commercial cavity block system
source	Automation in Construction 4 (2) (1995) pp. 147-167
summary	In an earlier publication (Leyh, 1993) the "Experiences with the Construction of a Building Assembly Robot" have been dealt with. The application of that robot system for the automatic assembly of commercial cavity blocks is the subject of a subsequent report which consists of two parts: in the first, this paper, we primarily deal with the assembly methods, in the second we deal with their realization. What is characteristic of cavity blocks is the fact that they are at first assembled dry, without cementing material, and the masonry is later filled with mortar. As to their weight and dimension, the cavity blocks used by the company GISOTON are adjusted to the ergonomics of a mason. The entirely different characteristics and abilities of assembly robots are not taken into consideration. However, their dimensional tolerance is relatively small (0.5 mm). Furthermore as cavity bricks, they have conic and oval recesses. Both features are strongly favourable for automation. This paper will highlight specific problems during automized construction assembly with commercial standard assembly elements, and help to solve them.
keywords	Robotics; Assembly methods; Jointing technique; Reference system; Gripper construction
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/06/02 09:36

_id	53da
authors	Carlson, Christopher
year	1993
title	Grammatical programming : an algebraic approach to the description of design spaces
source	Carnegie Mellon University
summary	The intuitiveness of spatial grammars makes them an attractive method of describing spaces of design. But grammars suffer from several inadequacies that limit their usefulness in design practice: (1) they cannot describe spaces of parametric, constrained designs, (2) they provide no control mechanisms for sequencing sets of rules, (3) they provide no 'subroutines' for dealing with complexity, and (4) they do not accommodate transformation mechanisms other than the rewrite rule. All of these inadequacies my [sic] be remedied by embedding grammars in a larger framework of nondeterministic functional programming, a paradigm we call 'grammatical programming.' In grammatical programs, rewrite rules are obtained from arbitrary nondeterministic functions by means of a 'rewrite closure' operator. Both rules and the designs they operate upon may be parametric and have attached constraints, permitting grammatical programs to describe spaces of parametric, constrained designs. Rewrite rules, and more generally, nondeterministic functions, are combined into compound functions by means of the operators of a control algebra, which provides functional composition, union, iteration, and a type of negation called 'failure.' The resulting modularity permits design space descriptions to be constructed, tested, and debugged piecewise, and to draw upon libraries of standard, debugged grammatical components. We begin this dissertation with an informal introduction to grammatical programming. We then give a formal, implementation-independent semantics of grammatical programs similar to the semantics of stratified logic programs. We discuss the implementation of a prototype compiler/interpreter and present case studies of the use of the prototype in describing spaces of rectangular dissections and a style of early Gothic traceries. We conclude with a discussion of lessons learned from the case studies and an agenda of further research necessary to make grammatical programming a useful tool in design practice.
series	thesis:PhD
last changed	2003/02/12 22:37

_id	ddssup9613
id	ddssup9613
authors	Kulkarni, R.G., Stought, R.R. and Haynes, K.E.
year	1996
title	Traffic Flow Landscapes
source	Timmermans, Harry (Ed.), Third Design and Decision Support Systems in Architecture and Urban Planning - Part two: Urban Planning Proceedings (Spa, Belgium), August 18-21, 1996
summary	Major metropolitan areas and constituent independent jurisdictions face the problem of providing efficient transportation for their residents and in-and out commuters. A typical trip taker spends considerable time on the road to reach the workplace and other destinations. Though it may seem counter-intuitive, adding more links to existing road networks and/or increasing traffic capacity by adding lanes does not necessarily decrease travel times (eg. Braess' paradox). But it is certain that a dense redundant network of roads would provide a trip taker with alternate routes when traffic incidents occur. These types of questions raise the question of, how to evaluate the flow characteristics of the entire road network of a jurisdiction and its larger region in keeping the traffic moving? Further, how may the impact of adding more links/ lanes or the blocking of existing links! lanes be best measured? To answer these and related questions, we propose a methodology to evaluate a fitness criteria for road networks based on Kauffman's biological NK model (1993). We specify a transportation road traffic flow landscape analogous to the fitness landscape of the NK model. Using the transportation road traffic flow landscape we derive a road fitness index that can be used to evaluate either the entire road network's traffic flows or subparts of such network's traffic flows. We explore the possibility of investigating traffic flow landscapes to search for optimal routes to clear traffic. Finally we describe an approach for applying the theoretical framework developed in the paper to the traffic conditions on the road network of the city of Fairfax, Virginia.
keywords	Fitness Landscapes, NK Model, Genotype, Gene, Self-Organization, ITS Technology
series	DDSS
last changed	2003/08/07 16:36

_id	078e
authors	Papazian, Pegor
year	1993
title	Incommensurability of Criteria and Focus in Design Generation
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 111-125
summary	An approach to developing design systems is presented, informed by the recognition that design criteria are incommensurable. The degree to which an artifact satisfies one criterion cannot be compared to the degree to which it satisfies another. Given this principle, it is not valid to combine different "scores " given to independent features in an evolving design into a global evaluation function. The design framework proposed here represents an alternative to the traditional approaches for combining independent criteria and organizational principles. It is based on the opportunistic nature of designing, the multiplicity of semantics active in a design session, and the dynamics of focus and distraction. By way of illustrating both this characterization of designing and the abstract computational framework on which it is based, a simple system for arranging blocks according to a set of formal massing principles is presented. The massing generator has some important properties that other systems lack, such as dynamism, robustness and the ability to deal with partial designs. Through a comparison with some artificial intelligence methods such as production systems and search, the proposed framework is used as a guideline for developing design systems. This paper focuses on designing as an activity, rather than engaging in an analysis of finished designs with the hope of capturing their syntactic properties. Thus the stress is placed on the generator's behavior, by giving examples of how it converges on a series of design alternatives in a dynamic fashion, avoiding oscillations and blocks.
keywords	Design, Criteria, Opportunism, Focus, CAD
series	CAAD Futures
last changed	1999/04/07 12:03

_id	41a6
authors	Thomas, Wolfgang
year	1993
title	Oberhausen ”Center” — Marketstreet under One Roof
source	Endoscopy as a Tool in Architecture [Proceedings of the 1st European Architectural Endoscopy Association Conference / ISBN 951-722-069-3] Tampere (Finland), 25-28 August 1993, pp. 99-108
summary	Oberhausen/Germany is said to be the birth place of the Ruhr industry. At present we can witness a unique structural change in the history of this city. Well into the sixties still an internationally renowned industrial location for coal and steel Oberhausen shall, according to the plans of local and regional governments, be developed into a center of service industries of top European niveau within the next three years. This development was and is the logical consequence of its salient position in the nexus of important European traffic routes. If one includes nearby Holland which is situated to the northwest Oberhausen can draw on the resources of a substantial market area. Attractive services provided, it can and shall be developed into an international center of attraction for more than 13 million people within a travel time radius of only 60 minutes. In its present borders, the town comprises the communities of Sterkrade, Osterfeld and old Oberhausen which had been independent up to 1929. On their joint boundaries a competitive metropolis of coal related and heavy industry developed, and that particularly after the Second World War. Oberhausen had excellent connections on water, rail and road with all the supraregional transportation networks. The continuous economic power of the settlement area could, apparently, not be questioned. At the beginning of the sixties Oberhausen was hit the harder by the downfall of this seemingly safe economic branch. Up to 1992 almost 40 000 jobs were lost in the city. Within 30 years Oberhausen lost everything it had gained in the years since its foundation. In the heart of the city a huge industrial wasteland was left.
keywords	Architectural Endoscopy
series	EAEA
more	http://info.tuwien.ac.at/eaea/
last changed	2005/09/09 10:43

_id	d6a3
authors	Alkhoven, Patricia
year	1993
title	The Changing Image of the City
source	University of Utrecht
summary	The image and structure of a town are constantly subject to a dynamic process of change and continuity. Visual material, such as photographs, historical maps, town plans, drawings and prints, show us the impact of these changes on the image of a town. The main point of departure of this study stems from the question of how this process of change and continuity is visually detectable in a town or city. The fact that the ideas about the appearance of a city (gradually) change, can be read from the often subtle changes in the townscape. Though in many cases we have a general knowledge of the choices made in urban management, the most difficult problem is to detect the underlying decisions. This raises the question to what extent these changes and also the continuities are the result of deliberate choices in urban management and to what extent they are autonomous developments in the townscape resistant to interventions. Using different kinds of visual information as a basis, computer visualization techniques are used in the present study to examine some cartographic maps and to reconstruct the urban development in the twentieth century of the town of Heusden three-dimensionally in significant phases. The resulting visualization provides us with a tool for a better understanding of the dynamics of urban transformation processes, typologies and morphological changes and continuities.
keywords	3D City Modeling
series	thesis:PhD
email
more	http://www.library.uu.nl/digiarchief/dip/diss/01754573/hfdheus.htm
last changed	2003/05/15 21:36

_id	2ff9
id	2ff9
authors	Ataman, Osman
year	1993
title	Knowledge-based Stair Design
source	Education and Practice: The Critical Interface [ACADIA Conference Proceedings / ISBN 1-880250-02-0] Texas (Texas / USA) 1993, pp. 163-171
doi	https://doi.org/10.52842/conf.acadia.1993.163
summary	The application of computer--based technique to support architectural design has often concentrated on matters of representation. Typically, this means computer-aided drafting, and less frequently, computer-aided modeling and visualization. The promise of new computer-based tools to support the process of design has thus far failed to produce any significant tool that has had a widespread impact on the architectural profession. Most developments remain in university based research labs where they are used as teaching instruments in CAD courses or less often in design studios. While there are many reasons for this lack of dissemination, including a reluctance on the part of the architectural profession itself, the primary obstacles deal with difficulties in explicating design knowledge, representing this knowledge in a manner that can be used for design, and providing an intuitive and effective user interface, allowing the designer to easily use the tool for its intended purpose. This study describes a system that has been developed to address a number of these issues. Based on research findings from the field of Artificial Intelligence which expounds on the need for multiple techniques to represent any complex area of knowledge, we have selected a particular approach that focuses on multiple techniques for design representation. We review this approach in depth by considering its many facets necessary when implementing a knowledge-based system. We then partially test the viability of this approach through a small case study, implementing a knowledge-based system for designing stairs. While this effort only deals with a small part of the total design process, it does explore a number of significant issues facing the development of computer-based design assistants, and suggests several techniques for addressing these concerns.
series	ACADIA
email
last changed	2022/06/07 07:54

_id	aa7f
authors	Bollinger, Elizabeth and Hill, Pamela
year	1993
title	Virtual Reality: Technology of the Future or Playground of the Cyberpunk?
source	Education and Practice: The Critical Interface [ACADIA Conference Proceedings / ISBN 1-880250-02-0] Texas (Texas / USA) 1993, pp. 121-129
doi	https://doi.org/10.52842/conf.acadia.1993.121
summary	Jaron Lanier is a major spokesperson of our society's hottest new technology: VR or virtual reality. He expressed his faith in the VR movement in this quote which appears in The User's Guide to the New Edge published by Mondo 2000. In its most technical sense, VR has attracted the attention of politicians in Washington who wonder if yet another technology developed in the United States will find its application across the globe in Asia. In its most human element, an entire "cyberpunk movement" has appealed to young minds everywhere as a seemingly safe form of hallucination. As architecture students, educators, and practitioners around the world are becoming attracted to the possibilities of VR technology as an extension of 3D modeling, visualization, and animation, it is appropriate to consider an overview of virtual reality. In virtual reality a user encounters a computersimulated environment through the use of a physical interface. The user can interact with the environment to the point of becoming a part of the experience, and the experience becomes reality. Natural and instinctive body movements are translated by the interface into computer commands. The quest for perfection in this human-computer relationship seems to be the essence of virtual reality technology. To begin to capture the essence of virtual reality without first-hand experience, it is helpful to understand two important terms: presence and immersion. The sense of presence can be defined as the degree to which the user feels a part of the actual environment. The more reality the experience provides, the more presence it has. Immersion can be defined as the degree of other simulation a virtual reality interface provides for the viewer. A highly immersive system might provide more than just visual stimuli; for example, it may additionally provide simulated sound and motion, and simultaneously prevent distractions from being present.
series	ACADIA
email
last changed	2022/06/07 07:52

_id	b665
authors	Burdea G. and Coiffet, G.
year	1993
title	Virtual Reality Technology
source	Wiley Interscience
summary	This in-depth review of current virtual reality technology and its applications provides a detailed analysis of the engineering, scientific and functional aspects of virtual reality systems and the fundamentals of VR modeling and programming. It also contains an exhaustive list of present and future VR applications in a number of diverse fields. Virtual Reality Technology is the first book to include a full chapter on force and tactile feedback and to discuss newer interface tools such as 3-D probes and cyberscopes. Supplemented with 23 color plates and more than 200 drawings and tables which illustrate the concepts described.
series	other
last changed	2003/04/23 15:14

_id	cad5
authors	Coyne, R.F., Flemming, U., Piela, P. and Woodbury, R.
year	1993
title	Behavior Modeling in Design System Development
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 335-354
summary	We describe the development approach for a software environment to support the early phases in building design called SEED. The combination of capabilities offered by SEED to designers is novel and includes the integrated handling of solution prototypes. We give the reasons for using an object-oriented software engineering approach in the development of the system, which starts with a comprehensive behavioral model of the system from the user's perspective based on actors and use cases. We illustrate results from the first development phase and sketch the next phases. At the time of the CAAD Futures '93 conference, we will be able to report our experience in developing a first system prototype and to demonstrate the prototype.
keywords	Object-Oriented Software Engineering, Integrated Design Systems, Architectural Programming, Schematic Layout Design
series	CAAD Futures
email
last changed	2003/02/26 17:24

_id	8326
authors	Diessenbacher, Claus and Rank, Ernst
year	1993
title	Teaching Design with CAD?
source	[eCAADe Conference Proceedings] Eindhoven (The Netherlands) 11-13 November 1993
doi	https://doi.org/10.52842/conf.ecaade.1993.x.i1h
summary	Abstract as well as functionally dependant design exercises are essential components of an architectural education at nearly every university. Their goal is to provide architect students with a feeling for proportions, colours, materials etc., and to teach and train them in threedimensional thinking. Pictures and concepts, developed by the designer are materialized by various technologies such as with pencil and paper in the traditional two-dimensional techniques or with clay, wood, paper etc. in three-dimensional modeling. Now the computer and the CAD-system join the palette of the designers available resources in presentation as both a two-dimensional and a three-dimensional medium. Although CAD is often considered and taught to be only a better drafting tool, the educational goal of our group at the University of Dortmund is to employ CAD as a design support medium. The prerequisites for work with the computer and the CAD system are provided in a compulsory two semester undergraduate subject. Basic programming, work with spreadsheets etc. are some exemplary themes provided in the form of lectures and practical exercises. A main emphasis of this instruction is the mastery of three-dimensional working technology with a comprehensive CAD-System. In cooperation of our computer science group and architecture chairs, seminars involving the use of CAD as a three-dimensional design tool, are offered as graduate courses. The seminars consist of loops of modeling and evaluating objects in a three-dimensional space. With this, the most possible realistic studies in colour, light and proportion take place exclusively on the computer.
series	eCAADe
last changed	2022/06/07 07:50

_id	8b38
authors	Do, Ellen Yi-Luen and Gross, Mark D.
year	1998
title	The Sundance Lab- "Design Systems of the Future"
source	ACADIA Quarterly, vol. 17, no. 4, pp. 8-10
doi	https://doi.org/10.52842/conf.acadia.1998.008
summary	The last thirty years have seen the development of powerful new tools for architects and planners: CAD, 3D modeling, digital imaging, geographic information systems, and real time animated walkthroughs. That’s just the beginning. Based on our experience with CAD tools, analysis of design practice, and an understanding of computer hardware and software, we’re out to invent the next generation of tools. We think architects should be shakers and makers, not just consumers, of computer aided design. We started the Sundance Lab (for Computing in Design and Planning) in 1993 with a few people and machines. We’ve grown to more than a dozen people (mostly undergraduate students) and a diverse interdisciplinary array of projects. We’ve worked with architects and planners, anthropologists, civil engineers, geographers, computer scientists, and electrical engineers. Our work is about the built environment: its physical form and various information involved in making and inhabiting places. We cover a wide range of topics – from design information management to virtual space, from sketch recognition to design rationale capture, to communication between designer and computer. All start from the position that design is a knowledge based and information rich activity. Explicit representations of design information (knowledge, rationale, and rules) enables us to engage in more intelligent dialogues about design. The following describes some of our projects under various rubrics.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	4203
authors	Fraser, Michael
year	1993
title	Boundary Representation in Practice
source	Education and Practice: The Critical Interface [ACADIA Conference Proceedings / ISBN 1-880250-02-0] Texas (Texas / USA) 1993, pp. 173-185
doi	https://doi.org/10.52842/conf.acadia.1993.173
summary	There is an essential contradiction between the making of buildings or built environments in a threedimensional modeler and the graphic control of this process. Three-dimensional modeling is a constructive activity, in which solids are assembled as they would be in an actual structure; it benefits the designer. Presentation and documentation, on the other hand, are prescriptive activities that direct some of the construction and all the visualization and criticism of the proposal; they benefit the user and builder. A building while being designed can be visualized and criticized from its solid model, and the model can take a variety of forms depending on its part): computer-based, drawn in orthographic or perspective projection, constructed of cardboard or wood, or described narratively by means of text, programmatic data, performance model or animation. However, practicing architecture is the process of recording and communicating the decision making process and the contractual obligations that result. In actual practice, in contrast to the designer directed ideal, more participants are brought in sooner at the beginning of a project and with more publicity, which in turn means keeping more, not fewer, records. As the profession evolves, records of the string of design decisions will become more automated, more carefully structured and more retrievable. More buildings will be "tracked" and exposed to review in this way because public environmental sensitivity will improve. The communication between a single designer and his own thoughts will become less and less important.
series	ACADIA
last changed	2022/06/07 07:50

_id	cfd2
authors	Penttilä, Hannu
year	1993
title	Visualizing with Digital Tools - Endoscopy Versus Computer Modeling
source	Endoscopy as a Tool in Architecture [Proceedings of the 1st European Architectural Endoscopy Association Conference / ISBN 951-722-069-3] Tampere (Finland), 25-28 August 1993, pp. 161-166
summary	This approach sees traditional video endoscopy and computer-based modeling techniques as two methods whose combination gives advantages for both. Endoscopy and computer based tools are not alternative nor rival techniques. New digital visualization possibilities are available within the context of CAD- systems. High-end and more expensive visualization has gained influence from commercial advertizing and also from entertainment industry. Traditional endoscope video has longer historical background and it’s roots are in model photography, model-based simulations and video techniques. The main focus of this paper is to describe Tampere architectural department’s computer based visualization facilities briefly with two cases studies. Our status and resources in traditional simulation have been rather good since mid 70’s, and now when also the basic digital facilities (word processing & CAD) exist, it will be our next challenge to deepen and develop the variety of available simulation methods, equipment – and naturally knowledge in combining them.
keywords	Architectural Endoscopy
series	EAEA
email
more	http://info.tuwien.ac.at/eaea/
last changed	2005/09/09 10:43

_id	f4df
id	f4df
authors	Rosenman, M. A., Gero, J. S. and Hwang, Y-S.
year	1993
title	Representation of multiple concepts of a design object based on multiple functions
source	K. Mathur, M. Betts and K. W. Tham (eds), Management of Information Technology for Construction, World Scientific, Singapore, pp. 239-254
summary	Current representatuin schemas for design objects in CAD environments make assumptions regarding particular representations of the design object. In the AEC environemnt, many disciplines are involved, each with its own concept of the design object. Each such concept must be respected and accomodated in any representation. This paper presents the ideas behind the representation of multiple concepts from an underlying description of a design such that the inter and intra-discipline views of that design can be formed dynamically.
keywords	information technology, concewptual modeling, multiple abstraction representation, building design, function
series	other
type	normal paper
email
more	http://www.arch.usyd.edu.au/~john/
last changed	2006/05/27 18:35

_id	e4c3
authors	Saggio, Antonino
year	1993
title	Hypertext, Solid Modeling, and Hierarchical Structures in Formal Architectural Analysis
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 289-309
summary	The paper presents computer reconstructions of unbuilt projects relevant to the history of Italian rationalism together with the potential and limits of three CAAD environments. While an evaluation is provided for each one, a more detailed attention is devoted to hierarchical structures because of their capability to capture knowledge, to support further investigations, and to provide new insights into architecture. A model built in this environment allows simultaneously (1) the analysis and reconstruction even of a complex project at the size of a personal computer; (2) the simulation and test of different material, crucial in the case of restoration or in the case of incomplete and uncertain original project data; (3) the critical analysis (but also the co-presence of the different project alternatives of design phases) through the reading at the various level of the hierarchy; and (4) free investigation on the structure of data that can support new critical hypothesis and insights that were not anticipated at the moment of project creation.
keywords	Hypertext, Solid Modeling, Hierarchical Structures, Giuseppe Terragni, Italian Modern Architecture
series	CAAD Futures
last changed	1999/04/07 12:03

_id	avocaad_2001_20
id	avocaad_2001_20
authors	Shen-Kai Tang
year	2001
title	Toward a procedure of computer simulation in the restoration of historical architecture
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 the field of architectural design, “visualization¨ generally refers to some media, communicating and representing the idea of designers, such as ordinary drafts, maps, perspectives, photos and physical models, etc. (Rahman, 1992; Susan, 2000). The main reason why we adopt visualization is that it enables us to understand clearly and to control complicated procedures (Gombrich, 1990). Secondly, the way we get design knowledge is more from the published visualized images and less from personal experiences (Evans, 1989). Thus the importance of the representation of visualization is manifested.Due to the developments of computer technology in recent years, various computer aided design system are invented and used in a great amount, such as image processing, computer graphic, computer modeling/rendering, animation, multimedia, virtual reality and collaboration, etc. (Lawson, 1995; Liu, 1996). The conventional media are greatly replaced by computer media, and the visualization is further brought into the computerized stage. The procedure of visual impact analysis and assessment (VIAA), addressed by Rahman (1992), is renewed and amended for the intervention of computer (Liu, 2000). Based on the procedures above, a great amount of applied researches are proceeded. Therefore it is evident that the computer visualization is helpful to the discussion and evaluation during the design process (Hall, 1988, 1990, 1992, 1995, 1996, 1997, 1998; Liu, 1997; Sasada, 1986, 1988, 1990, 1993, 1997, 1998). In addition to the process of architectural design, the computer visualization is also applied to the subject of construction, which is repeatedly amended and corrected by the images of computer simulation (Liu, 2000). Potier (2000) probes into the contextual research and restoration of historical architecture by the technology of computer simulation before the practical restoration is constructed. In this way he established a communicative mode among archeologists, architects via computer media.In the research of restoration and preservation of historical architecture in Taiwan, many scholars have been devoted into the studies of historical contextual criticism (Shi, 1988, 1990, 1991, 1992, 1995; Fu, 1995, 1997; Chiu, 2000). Clues that accompany the historical contextual criticism (such as oral information, writings, photographs, pictures, etc.) help to explore the construction and the procedure of restoration (Hung, 1995), and serve as an aid to the studies of the usage and durability of the materials in the restoration of historical architecture (Dasser, 1990; Wang, 1998). Many clues are lost, because historical architecture is often age-old (Hung, 1995). Under the circumstance, restoration of historical architecture can only be proceeded by restricted pictures, written data and oral information (Shi, 1989). Therefore, computer simulation is employed by scholars to simulate the condition of historical architecture with restricted information after restoration (Potier, 2000). Yet this is only the early stage of computer-aid restoration. The focus of the paper aims at exploring that whether visual simulation of computer can help to investigate the practice of restoration and the estimation and evaluation after restoration.By exploring the restoration of historical architecture (taking the Gigi Train Station destroyed by the earthquake in last September as the operating example), this study aims to establish a complete work on computer visualization, including the concept of restoration, the practice of restoration, and the estimation and evaluation of restoration.This research is to simulate the process of restoration by computer simulation based on visualized media (restricted pictures, restricted written data and restricted oral information) and the specialized experience of historical architects (Potier, 2000). During the process of practicing, communicates with craftsmen repeatedly with some simulated alternatives, and makes the result as the foundation of evaluating and adjusting the simulating process and outcome. In this way we address a suitable and complete process of computer visualization for historical architecture.The significance of this paper is that we are able to control every detail more exactly, and then prevent possible problems during the process of restoration of historical architecture.
series	AVOCAAD
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last changed	2005/09/09 10:48

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