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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	ddss9808
id	ddss9808
authors	Boelen, A.J.
year	1998
title	Pattern Matching for Decision Support
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	In this paper is discussed how we can use pattern matching techniques in combination with object orientation to support decision makers in arranging offices and industrial and commercial facilities in existing urban areas. The method used is based on the findings of a Ph.D. project almost finishedwhen writing this. The tool under development is specifically useful for rehabilitation of deteriorated industrial or commercial areas.I consider such an area already occupied and surrounded with all kinds of urban objects and connected to all kinds of infrastructure. I can describe this area in available objects and facilities. Furthermore we can describe the areas capacity left within the infrastructure, the capacity in forexample work force or clients and the available band width in noise or pollution. By describing the area in terms of availability of capacity to absorb or produce flows of people, goods, energy and information we sketch the room available for certain types of industrial or commercial facilities. I developed a technique to describe industrial and commercial facilities in such a way that we enable the match between these and the characteristics of an area available. Pattern matching techniquesenable the system to generate best matches between available areas, locations and facilities. This model can be adapted in several object oriented geographical information systems and be integrated with other information systems that for example calculate the pollution of certain kinds of facilities. The rules to match with are partly based on objective, measurable data like available capacity on the electricity network and needed electrical power for certain facilities. Other matching rules are based on political norms on for example acceptable pollution levels and suggested pollution of facilities. The paper presents the problem area of industrial area rehabilitation, describes the architecture of the modeling technique and presents the first findings of implementation studies.
keywords	Pattern matching, Object GIS, Urban object modeling, Facility planning
series	DDSS
last changed	2003/11/21 15:16

_id	ee96
authors	Johnson, Scott
year	1998
title	Making Models Architectural: Protean Representations to Fit Architects’ Minds
source	Digital Design Studios: Do Computers Make a Difference? [ACADIA Conference Proceedings / ISBN 1-880250-07-1] Québec City (Canada) October 22-25, 1998, pp. 354-365
doi	https://doi.org/10.52842/conf.acadia.1998.354
summary	A rich vocabulary has evolved for describing architecture. It serves not only as a means of communication, but also as an embodiment of concepts relating to form, space, structure, function, mood, and symbolism. We architects not only speak in terms of walls, rooms, roofs, arches, etc., we see in terms of them and think in terms of them, as well. Such concepts are integral to our ability to design. Typical CAD representations, however, are based on geometric/mathematical elements like points, lines, planes, and symbols. Even more experimental approaches like parametric shapes or procedural assemblies correspond poorly to architectural elements, and seldom lend themselves well to making conceptual changes that would allow exploration of design alternatives. Small wonder some architecture schools experience a division between computer and studio courses, or even between computer and studio faculty. Different ways of talking and thinking are involved. The concepts involved are often mutually exclusive. This paper discusses an attempt to address this conceptual mismatch, using what are termed “protean” (meaning “very changeable”) elements. These are high-level elements corresponding to architectural concepts like “wall,” or “dome.” They each have parameters appropriate for the particular type of element they represent, and produce the polyhedra necessary for graphics based on these parameters. A system is being implemented to allow models to be constructed using these elements. The protean elements form a loosely structured model, in which some elements hierarchically contain others, and some elements are essentially freestanding, being created and manipulated independently of other elements. Characteristics of protean element are discussed, including the underlying object-oriented structure, the relationship between elements and graphics, and functions associated with the objects. A scheme is explained whereby all parts of a design can be represented even when the design includes extremely unusual forms not conforming to predictable classes of elements. The necessary support framework is also discussed; general flow of the system and mechanisms for viewing the model and editing subcomponents are explained. The current status of the project, and intentions for future work are discussed. The project has been partially implemented, and the necessary framework to support the system is mostly complete.
series	ACADIA
email
last changed	2022/06/07 07:52

_id	ga9809
id	ga9809
authors	Kälviäinen, Mirja
year	1998
title	The ideological basis of generative expression in design
source	International Conference on Generative Art
summary	This paper will discuss issues concerning the design ideology supporting the use and development of generative design. This design ideology is based on the unique qualities of craft production and on the forms or ideas from nature or the natural characteristics of materials. The main ideology presented here is the ideology of the 1980´s art craft production in Finland. It is connected with the general Finnish design ideology and with the design ideology of other western countries. The ideology for these professions is based on the common background of design principles stated in 19th century England. The early principles developed through the Arts and Crafts tradition which had a great impact on design thinking in Europe and in the United States. The strong continuity of this design ideology from 19th century England to the present computerized age can be detected. The application of these design principles through different eras shows the difference in the interpretations and in the permission of natural decorative forms. The ideology of the 1980ïs art craft in Finland supports the ideas and fulfilment of generative design in many ways. The reasons often given as the basis for making generative design with computers are in very many respects the same as the ideology for art craft. In Finland there is a strong connection between art craft and design ideology. The characteristics of craft have often been seen as the basis for industrial design skills. The main themes in the ideology of the 1980´s art craft in Finland can be compared to the ideas of generative design. The main issues in which the generative approach reflects a distinctive ideological thinking are: Way of Life: The work is the communication of the maker´s inner ideas. The concrete relationship with the environment, personality, uniqueness, communication, visionary qualities, development and growth of the maker are important. The experiments serve as a media for learning. Taste and Aesthetic Education: The real love affair is created by the non living object with the help of memories and thought. At their best objects create the basis in their stability and communication for durable human relationships. People have warm relationships especially with handmade products in which they can detect unique qualities and the feeling that the product has been made solely for them. Counter-culture: The aim of the work is to produce alternatives for technoburocracy and mechanical production and to bring subjective and unique experiences into the customerïs monotonious life. This ideology rejects the usual standardized mass production of our times. Mythical character: There is a metamorphosis in the birth of the product. In many ways the design process is about birth and growth. The creative process is a development story of the maker. The complexity of communication is the expression of the moments that have been lived. If you can sense the process of making in the product it makes it more real and nearer to life. Each piece of wood has its own beauty. Before you can work with it you must find the deep soul of its quality. The distinctive traits of the material, technique and the object are an essential part of the metamorphosis which brings the product into life. The form is not only for formïs sake but for other purposes, too. You cannot find loose forms in nature. Products have their beginnings in the material and are a part of the nature. This art craft ideology that supports the ideas of generative design can be applied either to the hand made crafts production or to the production exploiting new technology. The unique characteristics of craft and the expression of the material based development are a way to broaden the expression and forms of industrial products. However, for a crafts person it is not meaningful to fill the world with objects. In generative, computer based production this is possible. But maybe the production of unique pieces is still slower and makes the industrial production in that sense more ecological. People will be more attached to personal and unique objects, and thus the life cycle of the objects produced will be longer.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	446f
authors	Mcintyre, B. and Feiner, S.
year	1998
title	A Distributed 3D Graphics Library
source	SIGGRAPH 98 Conference Proceedings, Computer Graphics Proceedings, Annual Conference Series, 1998, ACM SIGGRAPH
summary	We present Repo-3D, a general-purpose, object-oriented library for developing distributed, interactive 3D graphics applications across a range of heterogeneous workstations. Repo-3D is designed to make it easy for programmers to rapidly build prototypes using a familiar multi-threaded, object-oriented programming paradigm. All data sharing of both graphical and non-graphical data is done via general-purpose remote and replicated objects, presenting the illusion of a single distributed shared memory. Graphical objects are directly distributed, circumventing the "duplicate database" problem and allowing programmers to focus on the application details. Repo-3D is embedded in Repo, an interpreted, lexically-scoped, distributed programming language, allowing entire applications to be rapidly prototyped. We discuss Repo-3D's design, and introduce the notion of local variations to the graphical objects, which allow local changes to be applied to shared graphical structures. Local variations are needed to support transient local changes, such as highlighting, and responsive local editing operations. Finally, we discuss how our approach could be applied using other programming languages, such as Java.
series	other
last changed	2003/04/23 15:50

_id	b570
authors	Ozel, F.
year	1998
title	Object oriented representation of design decisions
source	Automation in Construction 8 (1) (1998) pp. 87-98
summary	During the course of a design project numerous design decisions are made, usually with little attention paid to documenting them or keeping track of them. Systematic documentation and representation of design decisions can not only be invaluable in learning from past design experiences, but can also be good tools in teaching architectural design. By using abstraction and analogy to analyze a design precedent, a problem/sub-problem hierarchy can be built where similarities and differences between the precedent problem and the target problem, goals, constraints and solutions are identified for each level of the hierarchy. Each one of these can be represented as objects in an object oriented programming environment, allowing the construction of a hierarchic structure. This model was incorporated into a computer assisted learning system called `DesignRep' which was created by using Toolbook® (Asymetrix) object oriented development environment.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	e184
authors	Popov, V., Popova, L. and De Paoli, G.
year	1998
title	Towards an Object-Oriented Language for the Declarative Design of Scenes
source	Digital Design Studios: Do Computers Make a Difference? [ACADIA Conference Proceedings / ISBN 1-880250-07-1] Québec City (Canada) October 22-25, 1998, pp. 316-353
doi	https://doi.org/10.52842/conf.acadia.1998.316
summary	We propose a prototype “kernel” of an object-oriented language, SOML (Scene Objects Modeling Language), intended to assist in the declarative design of scenes in image synthesis. This language is an attempt to provide the designer with a tool to facilitate the rapid prototyping of 3D scenes. It can also serve as a tool for knowledge acquisition and representation , and for communication and exchange of data with other tools in a design environment. Advantages offered by the implementation of SOML are: (a) from user’s viewpoint: the possibility of declarative description of the initial concept associated with the target scene in terms of properties and constraint vocabulary, the possibility of quantitative and qualitative reasoning on these properties, the modification of the intermediate solutions to different levels of detail, the utilisation of previous solutions; and (b) from the implementation viewpoint: the structuring of the properties and methods in the form of domain knowledge, the optimal solution generation according to heuristic causal-probabilistic criteria, the transformation of the semantic concept description of the scene in generic entry code for a geometrical CSG modeler or for rendering and visualization software, the integration of functionality for parameter generation and modification, the compilation of a scene from components of other final scenes and operations of geometrical transformations acting on groups of scenes. We present the architecture of the object-based implantation of the language and its interpreter, in the unified notation formalism UML. The utilization of the SOML language is illustrated by some examples.
series	ACADIA
email
last changed	2022/06/07 08:00

_id	a136
authors	Blaise, J.Y., Dudek, I. and Drap, P.
year	1998
title	Java collaborative interface for architectural simulations A case study on wooden ceilings of Krakow
source	International Conference On Conservation - Krakow 2000, 23-24 November 1998, Krakow, Poland
summary	Concern for the architectural and urban preservation problems has been considerably increasing in the past decades, and with it the necessity to investigate the consequences and opportunities opened for the conservation discipline by the development of computer-based systems. Architectural interventions on historical edifices or in preserved urban fabric face conservationists and architects with specific problems related to the handling and exchange of a variety of historical documents and representations. The recent development of information technologies offers opportunities to favour a better access to such data, as well as means to represent architectural hypothesis or design. Developing applications for the Internet also introduces a greater capacity to exchange experiences or ideas and to invest on low-cost collaborative working platforms. In the field of the architectural heritage, our research addresses two problems: historical data and documentation of the edifice, methods of representation (knowledge modelling and visualisation) of the edifice. This research is connected with the ARKIW POLONIUM co-operation program that links the MAP-GAMSAU CNRS laboratory (Marseilles, France) and the Institute HAiKZ of Kraków's Faculty of Architecture. The ARKIW programme deals with questions related to the use of information technologies in the recording, protection and studying of the architectural heritage. Case studies are chosen in order to experience and validate a technical platform dedicated to the formalisation and exchange of knowledge related to the architectural heritage (architectural data management, representation and simulation tools, survey methods, ...). A special focus is put on the evolution of the urban fabric and on the simulation of reconstructional hypothesis. Our contribution will introduce current ARKIW internet applications and experiences: The ARPENTEUR architectural survey experiment on Wie¿a Ratuszowa (a photogrammetrical survey based on an architectural model). A Gothic and Renaissance reconstruction of the Ratusz Krakowski using a commercial modelisation and animation software (MAYA). The SOL on line documentation interface for Kraków's Rynek G_ówny. Internet analytical approach in the presentation of morphological informations about Kraków's Kramy Bogate Rynku Krakowskiego. Object-Orientation approach in the modelling of the architectural corpus. The VALIDEUR and HUBLOT Virtual Reality modellers for the simulation and representation of reconstructional hypothesis and corpus analysis.
series	other
last changed	2003/04/23 15:14

_id	bb72
authors	Bourdot, P., Krus, M., Gherbi, R.
year	1998
title	Cooperation Between Reactive 3D Objects and a Multimodal X Window Kernel for CAD
source	Bunt, H., Beun, R.J., Borghuis, T. (Eds.). Multimodal Human-Computer Communication : Systems, Techniques, and Experiments. Berlin : Springer
summary	From the early steps of sketching to final engineering, a frequent and very important activity in designing objects is to perform graphical and spatial simulations to solve the constraints on the objects which are being designed. But when we analyse work situations involving the use of CAD systems, it is today an acknowledged fact that these tools are not helpful to perform these types of simulations. While knowledge modeling based on form feature concepts already offers some possibilities for attaching behaviour to objects, the simulation activity requires in addition a `real time' and `intelligent' management of the interactions between the 3D virtual objects and the CAD user. Our general purpose is to study how future CAD systems could be improved to achieve the simulation steps of object design. In this context we present some issues concerning the cooperation between a model of reactive 3D objects and a multimodal X Window kernel. We have developed a prototype of a system where objects with reactive behaviour can be built, and with which the user can interact with a combination of graphical actions and vocal commands. This prototype is used to evaluate the feasability and the usefulness of the integration of such techniques in futur applications that would be used by object designers in a real working context. We describe the current state of this system and the planned improvements.
series	other
last changed	2003/11/21 15:16

_id	7a20
id	7a20
authors	Carrara, G., Fioravanti, A.
year	2002
title	SHARED SPACE’ AND ‘PUBLIC SPACE’ DIALECTICS IN COLLABORATIVE ARCHITECTURAL DESIGN.
source	Proceedings of Collaborative Decision-Support Systems Focus Symposium, 30th July, 2002; under the auspices of InterSymp-2002, 14° International Conference on Systems Research, Informatics and Cybernetics, 2002, Baden-Baden, pg. 27-44.
summary	The present paper describes on-going research on Collaborative Design. The proposed model, the resulting system and its implementation refer mainly to architectural and building design in the modes and forms in which it is carried on in advanced design firms. The model may actually be used effectively also in other environments. The research simultaneously pursues an integrated model of the: a) structure of the networked architectural design process (operators, activities, phases and resources); b) required knowledge (distributed and functional to the operators and the process phases). The article focuses on the first aspect of the model: the relationship that exists among the various ‘actors’ in the design process (according to the STEP-ISO definition, Wix, 1997) during the various stages of its development (McKinney and Fischer, 1998). In Collaborative Design support systems this aspect touches on a number of different problems: database structure, homogeneity of the knowledge bases, the creation of knowledge bases (Galle, 1995), the representation of the IT datum (Carrara et al., 1994; Pohl and Myers, 1994; Papamichael et al., 1996; Rosenmann and Gero, 1996; Eastman et al., 1997; Eastman, 1998; Kim, et al., 1997; Kavakli, 2001). Decision-making support and the relationship between ‘private’ design space (involving the decisions of the individual design team) and the ‘shared’ design space (involving the decisions of all the design teams, Zang and Norman, 1994) are the specific topic of the present article. Decisions taken in the ‘private design space’ of the design team or ‘actor’ are closely related to the type of support that can be provided by a Collaborative Design system: automatic checks performed by activating procedures and methods, reporting of 'local' conflicts, methods and knowledge for the resolution of ‘local’ conflicts, creation of new IT objects/ building components, who the objects must refer to (the ‘owner’), 'situated' aspects (Gero and Reffat, 2001) of the IT objects/building components. Decisions taken in the ‘shared design space’ involve aspects that are typical of networked design and that are partially present in the ‘private’ design space. Cross-checking, reporting of ‘global’ conflicts to all those concerned, even those who are unaware they are concerned, methods for their resolution, the modification of data structure and interface according to the actors interacting with it and the design phase, the definition of a 'dominus' for every IT object (i.e. the decision-maker, according to the design phase and the creation of the object). All this is made possible both by the model for representing the building (Carrara and Fioravanti, 2001), and by the type of IT representation of the individual building components, using the methods and techniques of Knowledge Engineering through a structured set of Knowledge Bases, Inference Engines and Databases. The aim is to develop suitable tools for supporting integrated Process/Product design activity by means of a effective and innovative representation of building entities (technical components, constraints, methods) in order to manage and resolve conflicts generated during the design activity.
keywords	Collaborative Design, Architectural Design, Distributed Knowledge Bases, ‘Situated’ Object, Process/Product Model, Private/Shared ‘Design Space’, Conflict Reduction.
series	other
type	symposium
email
last changed	2005/03/30 16:25

_id	6279
id	6279
authors	Carrara, G.; Fioravanti, A.
year	2002
title	Private Space' and ‘Shared Space’ Dialectics in Collaborative Architectural Design
source	InterSymp 2002 - 14th International Conference on Systems Research, Informatics and Cybernetics (July 29 - August 3, 2002), pp 28-44.
summary	The present paper describes on-going research on Collaborative Design. The proposed model, the resulting system and its implementation refer mainly to architectural and building design in the modes and forms in which it is carried on in advanced design firms. The model may actually be used effectively also in other environments. The research simultaneously pursues an integrated model of the: a) structure of the networked architectural design process (operators, activities, phases and resources); b) required knowledge (distributed and functional to the operators and the process phases). The article focuses on the first aspect of the model: the relationship that exists among the various ‘actors’ in the design process (according to the STEP-ISO definition, Wix, 1997) during the various stages of its development (McKinney and Fischer, 1998). In Collaborative Design support systems this aspect touches on a number of different problems: database structure, homogeneity of the knowledge bases, the creation of knowledge bases (Galle, 1995), the representation of the IT datum (Carrara et al., 1994; Pohl and Myers, 1994; Papamichael et al., 1996; Rosenmann and Gero, 1996; Eastman et al., 1997; Eastman, 1998; Kim, et al., 1997; Kavakli, 2001). Decision-making support and the relationship between ‘private’ design space (involving the decisions of the individual design team) and the ‘shared’ design space (involving the decisions of all the design teams, Zang and Norman, 1994) are the specific topic of the present article. Decisions taken in the ‘private design space’ of the design team or ‘actor’ are closely related to the type of support that can be provided by a Collaborative Design system: automatic checks performed by activating procedures and methods, reporting of 'local' conflicts, methods and knowledge for the resolution of ‘local’ conflicts, creation of new IT objects/ building components, who the objects must refer to (the ‘owner’), 'situated' aspects (Gero and Reffat, 2001) of the IT objects/building components. Decisions taken in the ‘shared design space’ involve aspects that are typical of networked design and that are partially present in the ‘private’ design space. Cross-checking, reporting of ‘global’ conflicts to all those concerned, even those who are unaware they are concerned, methods for their resolution, the modification of data structure and interface according to the actors interacting with it and the design phase, the definition of a 'dominus' for every IT object (i.e. the decision-maker, according to the design phase and the creation of the object). All this is made possible both by the model for representing the building (Carrara and Fioravanti, 2001), and by the type of IT representation of the individual building components, using the methods and techniques of Knowledge Engineering through a structured set of Knowledge Bases, Inference Engines and Databases. The aim is to develop suitable tools for supporting integrated Process/Product design activity by means of a effective and innovative representation of building entities (technical components, constraints, methods) in order to manage and resolve conflicts generated during the design activity.
keywords	Collaborative Design, Architectural Design, Distributed Knowledge Bases, ‘Situated’ Object, Process/Product Model, Private/Shared ‘Design Space’, Conflict Reduction.
series	other
type	symposium
email
last changed	2012/12/04 07:53

_id	40d7
authors	Dalyrmple, Michael and Gerzso, Michael
year	1998
title	Executable Drawings: The Computation of Digital Architecture
source	Digital Design Studios: Do Computers Make a Difference? [ACADIA Conference Proceedings / ISBN 1-880250-07-1] Québec City (Canada) October 22-25, 1998, pp. 172-187
doi	https://doi.org/10.52842/conf.acadia.1998.172
summary	Architectural designs are principally represented by drawings. Usually, each drawing corresponds to one design or aspects of one design. On the other hand, one executable drawing corresponds to a set of designs. These drawings are the same as conventional drawings except that they have computer code or programs embedded in them. A specific design is the result of the computer executing the code in a drawing for a particular set of parameter values. If the parameters are changed, a new design or design variation is produced. With executable drawings, a CAD system is also a program editor. A designer not only designs by drawing but also programming. It fuses two activities: the first, drawing, is basic in architectural practice; and the second, progamming, or specifying the relation of outputs from inputs, is basic in computer system development. A consequence of executable drawings is that architectural form is represented by graphical entities (lines or shapes) as well as computer code or programs. This type of architecture we call digital architecture. Two simple examples are presented: first, the design of a building in terms of an executable drawing of the architects, Sangallo the Younger and Michelangelo, and second, a description of an object oriented implementation of a preliminary prototype of an executable drawing system written in 1997 which computes a simple office layout.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	6b33
authors	Dudek, I., Czubinski J., Blaise, J.-Y. and Drap, P.
year	1998
title	Collaborative Network Tools for the Architectural Analysis in Conservation Research
source	Cyber-Real Design [Conference Proceedings / ISBN 83-905377-2-9] Bialystock (Poland), 23-25 April 1998, pp. 75-84
summary	Development of net-based tools initiate a new architecture-computer science junction, offering a possibility to investigate distant exchange and updating of research work on architectural artefacts. Tools such as CAD platforms, rendering software and DBMS are integrated to the every day work of more and more architects and conservationists. Computer tools, which have been introduced in the process of analysing architecture as drawing and data management platforms, now bring to the fore a deeper change: distant analysis. The development of web technologies and the object oriented approach to knowledge representation give us an opportunity of research in the fields of collaborative work on architectural data models. The research presented in this paper focuses on a first set of network operative tools for a co-operation program aimed at developing web-enabled architectural data models referring to the evolution of Cracow's Old Town Hall.
series	plCAD
last changed	1999/04/08 17:16

_id	de62
authors	Eriksson, Joakim
year	1998
title	Planning of Environments for People with Physical Disabilities Using Computer Aided Design
source	Lund Institute of Technology, School of Architecture
summary	In the area of environment adaptations for people with physical disabilities, it is of vital importance that the design is optimized considering the human-environment interactions. All involved persons in such a planning process must be given sufficient support in understanding the information, so that everyone can participate actively. There is an apparent risk that discussions will be kept between experts, due to difficulties in understanding the complex and technical adaptation issues. This thesis investigates the use of computer-based tools for planning/designing environments for physically disabled people. A software prototype, and a method to use such a tool in the planning process, was developed and evaluated, based on the findings from six case studies of real planning situations. The case studies indicated that although such a tool would support the design, as well as the dialog between the participants, a certain level of technical and economical efficiency must be obtained. To facilitate the professional planner's work, an important issue is to maintain a large library of 3D objects. With the latest prototype implementation, it was found that such a planning tool can be produced, even when using consumer-oriented computers. One previous critical factor, interactive manipulation of 3D objects, can now be achieved if utilizing modern graphic cards with 3D acceleration. A usability test was performed to evaluate the prototype's basic operations, involving two groups of future users: five occupational therapist students, and four persons with major physical impairments. It was found that although the usability was satisfactory for the basic tasks, several items needed to be improved or added in future versions. It is important with an integrated support for manikins, in order to evaluate, e.g., wheelchair accessibility, reach ability, positioning of handrails, etc. This thesis reviews and compiles published anthropometrical and biomechanical data into a uniform segment-by-segment structure, in order to aid the design and modifications of manikins. The compilation was implemented as a spreadsheet document. An MRI investigation of the neck-shoulder region was performed on 20 healthy Scandinavian, female volunteers, measuring various musculoskeletal properties. These measurements can be used for further refinements of manikin specifications and biomechanical models.
keywords	Rehabilitation; Disability; Adaptation; Participatory Planning; Design Tool; 3D Graphics; Computer Aided Design; Virtual Reality; Manikin; Anthropometry; Biomechanics; Magnetic Resonance Imaging; Cervical Spine Kinematics
series	thesis:PhD
email
more	http://www.lub.lu.se/cgi-bin/show_diss.pl?db=global&fname=tec_250.html
last changed	2003/02/26 09:21

_id	a114
authors	Faucher, Didier and Nivet, Marie-Laure
year	1998
title	Playing with Design Intent: Integration of Physical and Urban Constraints in CAD
source	Digital Design Studios: Do Computers Make a Difference? [ACADIA Conference Proceedings / ISBN 1-880250-07-1] Québec City (Canada) October 22-25, 1998, pp. 118-137
doi	https://doi.org/10.52842/conf.acadia.1998.118
summary	Our work deals with the exploration of a universe of forms that satisfy some design intents. That is, we substitute a “generate and test” approach for a declarative approach in which an object is created from its properties. In this paper we present an original method that takes into account design intents relative to sunlight, visibility and urban regulation. First of all we study how current CAD tools have considered these properties until now. Our conclusion is that the classical design / simulation / analysis process does not suit design practices, especially in the early stages. We think that an improved CAD system should offer the architect the option of manipulating abstract information such as design intents. We define an intent as a conceptual expression of constraints having an influence on the project. For instance, a visual intent will be stated with no reference to vision geometry: “ from this place, I want to see the front of the new building”. We show how to represent each of these constraints with a 3D volume associated to some characteristics. If some solutions exist, we are sure that they are included in these volumes. For physical phenomena we compute the volume geometry using the principles of inverse simulation. In the case of urban regulation we apply deduction rules. Design intents are solved by means of geometrical entities that represent openings or obstructions in the project. Computing constraint volumes is a way of guiding the architect in his exploration of solutions. Constraint volumes are new spaces that can restore the link between form and phenomenon in a CAD tool. Our approach offers the designer the possibility of manipulating design intents.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	ga9814
id	ga9814
authors	Gatarski, Richard
year	1998
title	Evolutionary Banners, exploring a generative design approach
source	International Conference on Generative Art
summary	This working paper reports pre-mature findings from an ongoing research project that uses Genetic Algorithms (GAs) to automate the design of objects in the World Wide Web (WWW). Digital communications technology has on the business side been conceptualized as electronic commerce (E-commerce). Digitization implies a new cost structure for message design, test and implementation. One important problem regards the use and effectiveness of different means for E-commerce market communications. The purpose with the research presented here is to experiment with a particular use of GAs in E-commerce retailing. It is not to look for an optimal algorithm or fine-tune its parameters. This paper contributes with findings and a discussion of a new E-commerce possibility – evolutionary banner design The scientific aim is to explore the value of such an approach. As well as identify important issues. In a soon-to-be-realized implementation, the commercial aim will be to increase the sales volume for a specific product. In a sense the evolutionary banner works as an artificial art director. Still, a human director is needed to design the banner organism, its genetic code and related parameters. And of course to develop more creative uses of the approach presented below.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	ddss9822
id	ddss9822
authors	Gribnau, M.W., Verstijnen, I.M. and Hennessey, J.M.
year	1998
title	Three Dimensional Object Orientation Using the Non-Dominant Hand
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	The paper presents the “Turntable”, a 3D input device for orienting objects using the non-dominant hand. The device supports two-handed manipulation by allowing the non-dominant hand to orient an object while leaving the dominant hand free to perform other actions. Two-handed input is a technique that can enhance the performance, simplicity and intuitiveness of CAD systems. These properties are obligatory for CAD systems dedicated to support the conceptual phase of the design process. Anexperiment has been conducted in which the performance of the Turntable was compared to that of a well known 3D orientation method, known in literature as the “virtual sphere”. The virtual sphere is operated with the mouse using the dominant hand and is documented to be easy to use and efficient. The experiment establishes that a performance gain can be expected from a two-handed user interface that employs the Turntable for 3D object orientation with the non-dominant hand. In a single-handedinterface users must switch between rotating and manipulating an object. In a two-handed interface however, task switching is unnecessary and an additional performance benefit can be achieved when there is temporal overlap in the execution of the two tasks. Experimental results show that the Turntable, operated by the non-dominant hand, is easy to learn and its performance and accuracy are nearly equal to that of the virtual sphere operated by the dominant hand. With these results it can now be expected that a two-handed interface utilizing the Turntable performs better than a single-handed one for manipulating objects in 3D.
series	DDSS
last changed	2003/08/07 16:36

_id	ed8d
authors	Hui, K.C. and Li, Yadong
year	1998
title	A feature-based shape blending technique for industrial design
source	Computer-Aided Design, Vol. 30 (10) (1998) pp. 823-834
summary	Blending or averaging of two-dimensional shapes usually operates on sets of discrete points or polygons approximating the objects. This relies on a series of evenlydistributed or properly positioned points on the boundary of the objects. Features or characteristics of the objects are not well considered. This paper presents asimple but effective technique for blending 2D shapes composed of curve segments. Features that are essential for shape blending are extracted. Correspondencebetween features of the objects are then established. The correspondence between points on a pair of corresponding features are finally established for theinterpolation process. This allows characteristic features of the objects to be retained in the blending operation which is essential in industrial design. An experimentalsystem was developed for blending 2D contours with curved boundary. Test results showed that the proposed approach produces results suitable for industrialdesign.
keywords	Morphing, Form Features, Industrial Design, Shape Blending, In-Betweening, Feature, Industrial Design
series	journal paper
last changed	2003/05/15 21:33

_id	3d2f
authors	Kalay, Y.E., Khemlani, L. and JinWon, C.
year	1998
title	An integrated model to support distributed collaborative design of buildings
source	Automation in Construction 7 (2-3) (1998) pp. 177-188
summary	The process of designing, constructing and managing buildings is fragmented, and involves many participants interacting in complex ways over a prolonged period of time. Currently, sequential communication among the participants is the norm. Consequently, while individual parts of the project may be optimized, the optimality of the overall project suffers. It is our view that the quality of the overall project can be significantly improved (in terms of time, money, and quality of design) if there was a tighter, non-sequential collaboration among the participants. Additional improvements will accrue if the participants were provided with discipline-specific design and evaluation tools, which assist them in performing their tasks. This paper describes the development of an integrated design environment, which is intended to facilitate such collaboration. It comprises a semantically-rich, object-oriented database, which forms the basis for shared design decisions. The database is augmented by knowledge-based query and update operators. Geometric and semantic editing tools round out the environment.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	4ae8
authors	Kokosalakis, Jen, Hohmann, L.M. and Pamplin, I.
year	1999
title	Benefits of Data Integration in Building Modelling: 3D Object Oriented Professional Collaboration
source	AVOCAAD Second International Conference [AVOCAAD Conference Proceedings / ISBN 90-76101-02-07] Brussels (Belgium) 8-10 April 1999, pp. 103-130
summary	This paper will review current progress across the building construction industry in meeting demands for use of data integration with the 3D building model as the coordinating device in building design and development. Decades of national initiatives from NEDO (1990) to Egan (1998) have striven to encourage collaboration in first the building design team and later targetting in programmas the means to accomplish this. In its 14th year 'The User Group' has intensified efforts to persuade the industry of the benefits of associating all data involved from the first briefing and conception of design needs and ideas, through the development of the design, testing for structures, costs, heating, lighting, urban and rural environmental impact, facilities management, adaptation and even the eventual controlled demolition of the building. Examples in this paper will be reported from 'The User Group' conference, "Profit from Data Integration: An industry update", (NEC, Birmingham, Nov. 1998), to indicate how various organisations are now profiting from data integration in 3D object orientated modelling.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	ddss9835
id	ddss9835
authors	Langelaan, J. Willem R.
year	1998
title	Criteria for an object oriented library system of high–level parametric CADelements
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	The subject of this paper is the development of criteria and specifications for an object oriented library system of high–level parametric elements that have an integrated 2D and 3D representation. High–levelelements are virtual representations of architectural elements such as windows, doors, etc. High–level parametric elements need few components to be flexible and easily customizable. The generalization ofeach element by its characteristic parts results in a substantial reduction in the number of polygons that must be processed by the computer during the 3D transformation, graphically clean 3D images and low demandon user intervention. Gestalt theory emphasizes the importance of contour lines for the perception of an element. The “minimalist” symbolic representation will simplify contour lines that enhance perception. Theinherent flexibility and functionality of object oriented elements are augmented when the elements are rigorously developed as an object oriented library system, with classes and sub-classes of elements whichinherit characteristics of the parent–class. Attribute values of a parent–class give the user global control over all instances of that class and its sub–classes in the model’s database. The concepts which SystemsTheory uses for making an abstraction of reality are analogous to the concepts used in object oriented programming. This paper describes how Systems Theory is used as tool to develop high–level parametric elements as a functionally and computationally efficient library system.
series	DDSS
last changed	2003/08/07 16:36

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