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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	7561
authors	Streitz, N. A., Gei_ler, J. and Holmer, T.
year	1998
title	Roomware for Cooperative Buildings: Integrated Design of Architectural Spaces and Information Spaces
source	N.A. Streitz, S. Konomi, and H-J Burkhardt (eds), Cooperative Buildings: Integrating Information, Organization, and Architecture, Proceedings of CoBuild‘98, Springer, pp. 4-21
summary	In this paper, we introduce the concepts of "cooperative buildings" and "roomware" and place them in the context of the integrated design of real, physical, resp. architectural spaces and virtual, resp. digital information spaces. By "roomware" we mean computer-augmented things in rooms, like doors, walls, furniture, and others. The general approach is detailed via examples from the i-LAND project where we develop several "roomware" components in order to realize an interactive information and cooperation landscape, e.g. an innovative work environment for creativity teams. We describe the current realization of i-LAND which includes an interactive electronic wall, an interactive table, computer-augmented chairs, and a mechanism for assigning physical objects as representatives of information objects in the virtual world.
series	other
last changed	2003/04/23 15:50

_id	bcdc
authors	Streitz, Norbert A.
year	1998
title	Integrated Design of Real Architectural Spaces and Virtual Information Spaces
source	Proceedings of ACM CHI 98 Conference on Human Factors in ComputingSystems (Summary) 1998 v.2 pp. 263-264
summary	This paper presents an introduction to the Suite "Integrated design of real architectural spaces and virtual information spaces". It discusses the affordances of architectural spaces serving as information spaces and vice versa. As a consequence, it argues for a two-way augmentation of these two worlds were are living in. It concludes with an overview of the papers of this Suite.
keywords	Augmented Reality; Physical Space; Architecture; Virtual Space; Ambient Information; Workspace Design
series	other
last changed	2002/07/07 16:01

_id	e72f
authors	Dorta, Tomás and LaLande, Philippe
year	1998
title	The Impact of Virtual Reality on the Design Process
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. 138-163
doi	https://doi.org/10.52842/conf.acadia.1998.138
summary	Sketching, either hand or computer generated, along with other traditional visualization tools such as perspective drawing have difficulty in correctly representing three dimensional objects. Even physical models, in architecture, suffer in this regard because of inevitable scaling. The designer finds himself cut off from the reality of the object and is prone to misinterpretations of the object and its surrounding space and to resulting design errors. These are sometimes not perceived until too late, once the object has been constructed. Traditional tools use 2D media to represent 3D objects and only manage to introduce the third dimension in a limited manner (perspectives, not only tedious to construct, are static). This scenario affects the design process, particularly the cycle of proposal, verification and correction of design hypotheses as well as the cognitive aspects that condition the designer’s visualization of the designed object. In most cases, computer graphics mimic, through its interface, the traditional way of doing things. The architectural model is parametricized with little regard for visualization. No allowance is made for the change in the medium of graphic representation. Moreover, effort is not made to capitalize on the advantages of numerical calculation to propose new interfaces and new dimensions in object visualization. Virtual Reality (VR), seen not only as technology but as experience, brings the 3D object, abstractly viewed by traditional means, into clearer focus and provides us with these new dimensions. Errors due to abstracted representation are reduced since the interface is always three dimensional and the interactions intuitively made in real time thus allowing the designer to experience the presence of the designed object very quickly. At the École de design industriel of the Faculté d’aménagement, we have run tests using non-immersive VR–one passive (comprehension) and another active (design). This project, involving a group of 72 students during a period of six weeks (6h/week), aimed at analyzing the impact of VR as a visualization tool on the design process versus traditional tools. The results, described in this presentation, shed light on the effect of VR on the creative process as such, as well as on the quality of the results produced by that process.
series	ACADIA
email
last changed	2022/06/07 07:55

_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	2edf
authors	Levy, Pierre
year	1998
title	Becoming Virtual, Reality in the Digital Age
source	Plenum Trade, New York
summary	Pierre Levy takes a fresh look at the whole idea of what is virtual. He's responding to the widespread belief, and sometimes even panic, that a digital society with emphasis on virtual interactions is necessarily depersonalizing. He takes particular exception to the notion that "virtual" and "real" are opposites. Instead, Levy argues that virtuality is one of four modes of existence, the rest of which he describes as reality, possibility, and actuality. Each is defined in terms of its relationship with its environment. In following Levy's world view, you may find that he interprets some or all of those terms in ways you're not used to, but the result is an interesting new approach to what it means to be part of an increasingly digital world. He examines the virtualization of several elements our society: the corporal body, text, the economy, language, technology, contracts, intelligence, subjects, and objects. What he finds is not a destruction of the personal so much as a transformation. Virtualization adds to, but does not replace, the real, the possible, and the actual. By understanding what virtualization means and involves, Levy believes that society will gain a greater variety of options for interaction in all areas. Becoming Virtual is a serious philosophical work, dense with ideas.
series	other
last changed	2003/04/23 15:14

_id	cf9d
authors	Yeung, C., Cheung, L., Yen, J. and Cheng, C.
year	1998
title	Virtual Classroom for Architecture
source	CAADRIA ‘98 [Proceedings of The Third Conference on Computer Aided Architectural Design Research in Asia / ISBN 4-907662-009] Osaka (Japan) 22-24 April 1998, pp. 93-102
doi	https://doi.org/10.52842/conf.caadria.1998.093
summary	Over the past few years, we have seen that the evolution of the Internet and World Wide Web technologies have significantly enhanced the global communication and collaboration. People, no matter where they are, are virtually getting closer and closer. The barriers that came from time and distance have been partially removed by the use of such technologies. Internet and WWW are not just technology, they are an environment or space. With such breakthrough in technologies, a new paradigm in education is there. The education very differently from what we have now. This paper presents an Internet-based environment to support teaching and learning in architecture education. We will discuss the design concept and how to integrate the technology and knowledge-based techniques to implement the learning environment for architecture students. Architecture is a very specific discipline which consists of the knowledge from arts, sciences, engineering, and more. One of the focuses in architecture education is to teach how to express and communicate design ideas with the multimedia or other technologies, such as, virtual reality (VR). A case study presented in this paper is about how to deliver and present the ancient Chinese temples and its bracket set systems from the server to the browsers to support distance teaching. That is, students and teachers may not be in the same location, but they are able to watch the same objects and to exchange ideas. We will discuss how to use multimedia technologies to illustrate how a temple and its bracket set differ from dynasties to dynasties and introduce its basic properties to the viewers. Moreover, we will discuss how we organize and handle 3-dimensional objects with such system. Many people are still arguing about whether Internet-based teaching or a real classroom setting is better. We are not implying that Internet-based teaching is superior or predicting that it will dominate the teaching in the near future. However, we strongly believe that it is just another alternative to express and represent architectural thinking to over some of the barriers that come from time and distance. We believe, that it is always true, that the Internet-based teaching may provide both teachers and learners greater flexibility and to support more International collaboration. That is, regardless where the students or teachers are, they can always participate in learning or teaching and make teaching and learning much more rich and interesting.
keywords	Virtual Classroom
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:57

_id	ga0026
id	ga0026
authors	Ransen, Owen F.
year	2000
title	Possible Futures in Computer Art Generation
source	International Conference on Generative Art
summary	Years of trying to create an "Image Idea Generator" program have convinced me that the perfect solution would be to have an artificial artistic person, a design slave. This paper describes how I came to that conclusion, realistic alternatives, and briefly, how it could possibly happen. 1. The history of Repligator and Gliftic 1.1 Repligator In 1996 I had the idea of creating an “image idea generator”. I wanted something which would create images out of nothing, but guided by the user. The biggest conceptual problem I had was “out of nothing”. What does that mean? So I put aside that problem and forced the user to give the program a starting image. This program eventually turned into Repligator, commercially described as an “easy to use graphical effects program”, but actually, to my mind, an Image Idea Generator. The first release came out in October 1997. In December 1998 I described Repligator V4 [1] and how I thought it could be developed away from simply being an effects program. In July 1999 Repligator V4 won the Shareware Industry Awards Foundation prize for "Best Graphics Program of 1999". Prize winners are never told why they won, but I am sure that it was because of two things: 1) Easy of use 2) Ease of experimentation "Ease of experimentation" means that Repligator does in fact come up with new graphics ideas. Once you have input your original image you can generate new versions of that image simply by pushing a single key. Repligator is currently at version 6, but, apart from adding many new effects and a few new features, is basically the same program as version 4. Following on from the ideas in [1] I started to develop Gliftic, which is closer to my original thoughts of an image idea generator which "starts from nothing". The Gliftic model of images was that they are composed of three components: 1. Layout or form, for example the outline of a mandala is a form. 2. Color scheme, for example colors selected from autumn leaves from an oak tree. 3. Interpretation, for example Van Gogh would paint a mandala with oak tree colors in a different way to Andy Warhol. There is a Van Gogh interpretation and an Andy Warhol interpretation. Further I wanted to be able to genetically breed images, for example crossing two layouts to produce a child layout. And the same with interpretations and color schemes. If I could achieve this then the program would be very powerful. 1.2 Getting to Gliftic Programming has an amazing way of crystalising ideas. If you want to put an idea into practice via a computer program you really have to understand the idea not only globally, but just as importantly, in detail. You have to make hard design decisions, there can be no vagueness, and so implementing what I had decribed above turned out to be a considerable challenge. I soon found out that the hardest thing to do would be the breeding of forms. What are the "genes" of a form? What are the genes of a circle, say, and how do they compare to the genes of the outline of the UK? I wanted the genotype representation (inside the computer program's data) to be directly linked to the phenotype representation (on the computer screen). This seemed to be the best way of making sure that bred-forms would bare some visual relationship to their parents. I also wanted symmetry to be preserved. For example if two symmetrical objects were bred then their children should be symmetrical. I decided to represent shapes as simply closed polygonal shapes, and the "genes" of these shapes were simply the list of points defining the polygon. Thus a circle would have to be represented by a regular polygon of, say, 100 sides. The outline of the UK could easily be represented as a list of points every 10 Kilometers along the coast line. Now for the important question: what do you get when you cross a circle with the outline of the UK? I tried various ways of combining the "genes" (i.e. coordinates) of the shapes, but none of them really ended up producing interesting shapes. And of the methods I used, many of them, applied over several "generations" simply resulted in amorphous blobs, with no distinct family characteristics. Or rather maybe I should say that no single method of breeding shapes gave decent results for all types of images. Figure 1 shows an example of breeding a mandala with 6 regular polygons: Figure 1 Mandala bred with array of regular polygons I did not try out all my ideas, and maybe in the future I will return to the problem, but it was clear to me that it is a non-trivial problem. And if the breeding of shapes is a non-trivial problem, then what about the breeding of interpretations? I abandoned the genetic (breeding) model of generating designs but retained the idea of the three components (form, color scheme, interpretation). 1.3 Gliftic today Gliftic Version 1.0 was released in May 2000. It allows the user to change a form, a color scheme and an interpretation. The user can experiment with combining different components together and can thus home in on an personally pleasing image. Just as in Repligator, pushing the F7 key make the program choose all the options. Unlike Repligator however the user can also easily experiment with the form (only) by pushing F4, the color scheme (only) by pushing F5 and the interpretation (only) by pushing F6. Figures 2, 3 and 4 show some example images created by Gliftic. Figure 2 Mandala interpreted with arabesques Figure 3 Trellis interpreted with "graphic ivy" Figure 4 Regular dots interpreted as "sparks" 1.4 Forms in Gliftic V1 Forms are simply collections of graphics primitives (points, lines, ellipses and polygons). The program generates these collections according to the user's instructions. Currently the forms are: Mandala, Regular Polygon, Random Dots, Random Sticks, Random Shapes, Grid Of Polygons, Trellis, Flying Leap, Sticks And Waves, Spoked Wheel, Biological Growth, Chequer Squares, Regular Dots, Single Line, Paisley, Random Circles, Chevrons. 1.5 Color Schemes in Gliftic V1 When combining a form with an interpretation (described later) the program needs to know what colors it can use. The range of colors is called a color scheme. Gliftic has three color scheme types: 1. Random colors: Colors for the various parts of the image are chosen purely at random. 2. Hue Saturation Value (HSV) colors: The user can choose the main hue (e.g. red or yellow), the saturation (purity) of the color scheme and the value (brightness/darkness) . The user also has to choose how much variation is allowed in the color scheme. A wide variation allows the various colors of the final image to depart a long way from the HSV settings. A smaller variation results in the final image using almost a single color. 3. Colors chosen from an image: The user can choose an image (for example a JPG file of a famous painting, or a digital photograph he took while on holiday in Greece) and Gliftic will select colors from that image. Only colors from the selected image will appear in the output image. 1.6 Interpretations in Gliftic V1 Interpretation in Gliftic is best decribed with a few examples. A pure geometric line could be interpreted as: 1) the branch of a tree 2) a long thin arabesque 3) a sequence of disks 4) a chain, 5) a row of diamonds. An pure geometric ellipse could be interpreted as 1) a lake, 2) a planet, 3) an eye. Gliftic V1 has the following interpretations: Standard, Circles, Flying Leap, Graphic Ivy, Diamond Bar, Sparkz, Ess Disk, Ribbons, George Haite, Arabesque, ZigZag. 1.7 Applications of Gliftic Currently Gliftic is mostly used for creating WEB graphics, often backgrounds as it has an option to enable "tiling" of the generated images. There is also a possibility that it will be used in the custom textile business sometime within the next year or two. The real application of Gliftic is that of generating new graphics ideas, and I suspect that, like Repligator, many users will only understand this later. 2. The future of Gliftic, 3 possibilties Completing Gliftic V1 gave me the experience to understand what problems and opportunities there will be in future development of the program. Here I divide my many ideas into three oversimplified possibilities, and the real result may be a mix of two or all three of them. 2.1 Continue the current development "linearly" Gliftic could grow simply by the addition of more forms and interpretations. In fact I am sure that initially it will grow like this. However this limits the possibilities to what is inside the program itself. These limits can be mitigated by allowing the user to add forms (as vector files). The user can already add color schemes (as images). The biggest problem with leaving the program in its current state is that there is no easy way to add interpretations. 2.2 Allow the artist to program Gliftic It would be interesting to add a language to Gliftic which allows the user to program his own form generators and interpreters. In this way Gliftic becomes a "platform" for the development of dynamic graphics styles by the artist. The advantage of not having to deal with the complexities of Windows programming could attract the more adventurous artists and designers. The choice of programming language of course needs to take into account the fact that the "programmer" is probably not be an expert computer scientist. I have seen how LISP (an not exactly easy artificial intelligence language) has become very popular among non programming users of AutoCAD. If, to complete a job which you do manually and repeatedly, you can write a LISP macro of only 5 lines, then you may be tempted to learn enough LISP to write those 5 lines. Imagine also the ability to publish (and/or sell) "style generators". An artist could develop a particular interpretation function, it creates images of a given character which others find appealing. The interpretation (which runs inside Gliftic as a routine) could be offered to interior designers (for example) to unify carpets, wallpaper, furniture coverings for single projects. As Adrian Ward [3] says on his WEB site: "Programming is no less an artform than painting is a technical process." Learning a computer language to create a single image is overkill and impractical. Learning a computer language to create your own artistic style which generates an infinite series of images in that style may well be attractive. 2.3 Add an artificial conciousness to Gliftic This is a wild science fiction idea which comes into my head regularly. Gliftic manages to surprise the users with the images it makes, but, currently, is limited by what gets programmed into it or by pure chance. How about adding a real artifical conciousness to the program? Creating an intelligent artificial designer? According to Igor Aleksander [1] conciousness is required for programs (computers) to really become usefully intelligent. Aleksander thinks that "the line has been drawn under the philosophical discussion of conciousness, and the way is open to sound scientific investigation". Without going into the details, and with great over-simplification, there are roughly two sorts of artificial intelligence: 1) Programmed intelligence, where, to all intents and purposes, the programmer is the "intelligence". The program may perform well (but often, in practice, doesn't) and any learning which is done is simply statistical and pre-programmed. There is no way that this type of program could become concious. 2) Neural network intelligence, where the programs are based roughly on a simple model of the brain, and the network learns how to do specific tasks. It is this sort of program which, according to Aleksander, could, in the future, become concious, and thus usefully intelligent. What could the advantages of an artificial artist be? 1) There would be no need for programming. Presumbably the human artist would dialog with the artificial artist, directing its development. 2) The artificial artist could be used as an apprentice, doing the "drudge" work of art, which needs intelligence, but is, anyway, monotonous for the human artist. 3) The human artist imagines "concepts", the artificial artist makes them concrete. 4) An concious artificial artist may come up with ideas of its own. Is this science fiction? Arthur C. Clarke's 1st Law: "If a famous scientist says that something can be done, then he is in all probability correct. If a famous scientist says that something cannot be done, then he is in all probability wrong". Arthur C Clarke's 2nd Law: "Only by trying to go beyond the current limits can you find out what the real limits are." One of Bertrand Russell's 10 commandments: "Do not fear to be eccentric in opinion, for every opinion now accepted was once eccentric" 3. References 1. "From Ramon Llull to Image Idea Generation". Ransen, Owen. Proceedings of the 1998 Milan First International Conference on Generative Art. 2. "How To Build A Mind" Aleksander, Igor. Wiedenfeld and Nicolson, 1999 3. "How I Drew One of My Pictures: or, The Authorship of Generative Art" by Adrian Ward and Geof Cox. Proceedings of the 1999 Milan 2nd International Conference on Generative Art.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	e5a2
authors	Debevec, P.
year	1998
title	Rendering synthetic objects into real scenes: Bridging traditional and image-based graphics with global illumination and high dynamic range photography
source	Proc. ACM SIGGRAPH 98, M. Cohen, Ed., 189–198
summary	We present a method that uses measured scene radiance and global illumination in order to add new objects to light-based models with correct lighting. The method uses a high dynamic range imagebased model of the scene, rather than synthetic light sources, to illuminate the newobjects. To compute the illumination, the scene is considered as three components: the distant scene, the local scene, and the synthetic objects. The distant scene is assumed to be photometrically unaffected by the objects, obviating the need for re- flectance model information. The local scene is endowed with estimated reflectance model information so that it can catch shadows and receive reflected light from the new objects. Renderings are created with a standard global illumination method by simulating the interaction of light amongst the three components. A differential rendering technique allows for good results to be obtained when only an estimate of the local scene reflectance properties is known. We apply the general method to the problem of rendering synthetic objects into real scenes. The light-based model is constructed from an approximate geometric model of the scene and by using a light probe to measure the incident illumination at the location of the synthetic objects. The global illumination solution is then composited into a photograph of the scene using the differential rendering technique. We conclude by discussing the relevance of the technique to recovering surface reflectance properties in uncontrolled lighting situations. Applications of the method include visual effects, interior design, and architectural visualization.
series	other
last changed	2003/04/23 15:50

_id	1d83
authors	Dodge, M., Doyle, S. and Smith, A.
year	1998
title	Visual Communication in Urban Planning and Urban Design
source	Working Paper 2; Centre for Advanced Spatial Analysis Working Papers; London; June 1998
summary	This Case Study documents the current status of visual communication in urban design and planning. Visual communication is examined through discussion of standalone and network media, specifically concentrating on visualisation on the World Wide Web (WWW). First, we examine the use of Solid and Geometric Modelling for visualising urban planning and urban design. This report documents and compares examples of the use of Virtual Reality Modelling Language (VRML) and proprietary WWW based Virtual Reality modelling software. Examples include the modelling of Bath and Glasgow using both VRML 1.0 and 2.0. The use of Virtual Worlds and their role in visualising urban form within multi-user environments is reviewed. The use of Virtual Worlds is developed into a study of the possibilities and limitations of Virtual Internet Design Arena's (ViDA's), an initiative undertaken at the Centre for Advanced Spatial Analysis, University College London. The use of Virtual Worlds and their development towards ViDA's is seen as one of the most important developments in visual communication for urban planning and urban design since the development plan. Secondly, the role of photorealistic media in the process of communicating plans is examined. The process of creating photorealistic media is documented, and examples of the Virtual Streetscape and Wired Whitehall Virtual Urban Interface System are provided. The conclusion is that, although the use of photo-realistic media on the WWW provides a way to visually communicate planning information, its use is limited. The merging of photorealistic media and solid geometric modelling in the creation of Augmented Reality is reviewed. Augmented Reality is seen to provide an important step forward in the ability quickly and easily to visualise urban planning and urban design information. Third, the role of visual communication of planning data through GIS is examined in terms of desktop, three dimensional, and Internet based GIS. The evolution to Internet GIS is seen as a critical component in the development of virtual cities that will allow urban planners and urban designers to visualise and model the complexity of the built environment in networked virtual reality. Finally, a viewpoint is put forward of the Virtual City, linking Internet GIS with photorealistic multi-user Virtual Worlds. At present there are constraints on how far virtual cities can be developed, but a view is provided on how these networked virtual worlds are developing to aid visual communication in urban planning and urban design.
series	other
last changed	2003/04/23 15:50

_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

_id	ecaadesigradi2019_474
id	ecaadesigradi2019_474
authors	Nunes de Vasconcelos, Guilherme, Malard, Maria Lucia, van Stralen, Mateus, Campomori, Maurício, Canavezzi de Abreu, Sandro, Lobosco, Tales, Flach Gomes, Isabella and Duarte Costa Lima, Lucas
year	2019
title	Do we still need CAVEs?
source	Sousa, JP, Xavier, JP and Castro Henriques, G (eds.), Architecture in the Age of the 4th Industrial Revolution - Proceedings of the 37th eCAADe and 23rd SIGraDi Conference - Volume 3, University of Porto, Porto, Portugal, 11-13 September 2019, pp. 133-142
doi	https://doi.org/10.52842/conf.ecaade.2019.3.133
summary	This paper discusses the relevance of CAVE systems in comparison with virtual and augmented reality head-mounted displays in terms of immersion experience, costs, maintenance, ease to use, interactivity, and social interaction. It is based on a comparative study of a systematic literature review comprising the works available at CumInCAD and IEEE databases in the period from 1998-2018, and empirical data from technical visits made to five CAVEs in Europe. The discussion seeks to cover the limits of each technology and questions the need for CAVEs nowadays.
keywords	CAVE; Virtual Reality; head mounted display; Augmented reality
series	eCAADeSIGraDi
email
last changed	2022/06/07 08:00

_id	ddssar0203
id	ddssar0203
authors	Alkass, Sabah and Jrade, Ahmad
year	2002
title	A Web-Based Virtual Reality Model for Preliminary Estimates of Hi-Rise Building Projects
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary	Cost estimating of a construction project at its early stage is considered to be very important task since it will be used as a base to commit or otherwise not to commit funds to that project. Preparation of a reliableand realistic preliminary estimate to aid the decision makers to commit funds for a specific project is a complicated assignment. Traditional methods and operations produced unsatisfactory aid due to lack ofaccuracy especially in the pre-design stage of a project. This participates in the increase of percentage of bankruptcy in the construction industry, which has dramatically climbed up and ranked as 15 percent of thewhole bankruptcies claimed in Canada (Statistic Canada 1998). This paper presents a methodology for developing and a Web-based model to automate preliminary cost estimates for hi-rise buildings. This is achieved by integrating a database with design drawings in a Virtual Reality (VR) environment. The model will automatically generate preliminary estimates after modifying a 3D CAD drawing. It provides the user the option to visualize and simulate the drawing and its cost data through VR environment. Having done that, it will allow owners, architects and cost engineers to view a constructed building project, change its geometric objects and shapes, and accordingly generate a new conceptual cost estimate.
series	DDSS
last changed	2003/11/21 15:15

_id	0f4c
authors	Asanowicz, Aleksander
year	1998
title	From Real to Cyber Reality
source	Cyber-Real Design [Conference Proceedings / ISBN 83-905377-2-9] Bialystock (Poland), 23-25 April 1998, pp. 11-19
summary	Human activity takes place in two planes, at two levels. Practical activity is present in one of the planes, the other level is occupied by purely cognitive activity. When observing sufficiently long sequences of practical and cognitive activities, one notices transitions between them, which prove true the suspicions of their functional relationship. Because on both of these planes of human activity there is always one and the same element present - an informative element - which on the first plane functions as subordinate, and in the other as an independent one, one can search for a common characteristic for both planes. Such common characteristic for both levels of human activity can be perceived in the fact that in both situations the activity of a human is based on CREATION. Human thinking is based on transitions between what is accessible through experience and what is referred to conceptually. The human thought exists only and exclusively in the vertical motion: from the phenomenal level to the structural level direction of abstraction) and from the conceptual level to the empirical level direction of concretisation). All human activity is multilayered or, more precisely, it is an activity within many layers: the sensual one as well as the structural one. The appearance of conceptual thinking has created a qualitatively new type of a situation. This novelty can be easily seen both in the sphere of the practical cognitive activity as well as in the sphere of the pure cognitive activity. In both cases, the cognitive activity of a human is of a "double-decker" character: image and concept. It is necessary to note here that the "image" does not only mean structural, concrete, but also one which is purely visual, abstract, of no physical form. Therefore, the human experience, being the result of the cognitive activity, is being expressed, becoming objective, materialising in two different but compatible ways. Firstly, in the material structures of practical significance - this way the material culture is created. Secondly - in material structures which have no practical meaning but are solely used for expressing the spiritual contents - thus creating the spiritual culture. Humans have developed an extraordinarily strong need for spiritual activity, which is manifested by the material activity, redundant from the point of view of the material needs.
series	plCAD
email
last changed	2003/05/17 10:01

_id	215e
authors	Bai, Rui-Yuan and Liu, Yu-Tung
year	1998
title	Towards a Computerized Procedure for Visual Impact Analysis and Assessment - The Hsinchu Example
source	CAADRIA ‘98 [Proceedings of The Third Conference on Computer Aided Architectural Design Research in Asia / ISBN 4-907662-009] Osaka (Japan) 22-24 April 1998, pp. 67-76
doi	https://doi.org/10.52842/conf.caadria.1998.067
summary	This paper examines the procedure of visual impact analysis and assessment proposed by Rahman and reviews the use of CAD applications in urban projects in the real world. A preliminary computerized procedure for visual impact analysis and assessment is proposed. An experiments was conducted in our laboratory to verify the preliminary procedure. In order to further study the revised procedure in real urban projects, it was also applied into the renew project of The Eastern Gate Plaza located in the center of city Hsinchu, Taiwan from 1996 to 1998. According to several face-to-face discussions with Hsinchu habitants, government officials, and professional designers, a final computerized procedure for visual impact analysis and assessment is concluded.
keywords	Environmental Simulation, Visual Impact Analysis and Assessment, Virtual Reality
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:54

_id	a2b0
id	a2b0
authors	Charitos, Dimitrios
year	1998
title	The architectural aspect of designing space in virtual environments
source	University of Strathclyde, Dept. of Architecure and Building Science
summary	This thesis deals with the architectural aspect of virtual environment design. It aims at proposing a framework, which could inform the design of three-dimensional content for defining space in virtual environments, in order to aid navigation and wayfinding. The use of such a framework in the design of certain virtual environments is considered necessary for imposing a certain form and structure to our spatial experience in there. Firstly, this thesis looks into literature from the fields of architectural and urban design theory, philosophy, environmental cognition, perceptual psychology and geography for the purpose of identifying a taxonomy of spatial elements and their structure in the real world, on the basis of the way that humans think about and remember real environments. Consequently, the taxonomy, proposed for space in the real world is adapted to the intrinsic characteristics of space in virtual environments, on the basis of human factors aspects of virtual reality technology. As a result, the thesis proposes a hypothetical framework consisting of a taxonomy of spatial and space-establishing elements that a virtual environment may comprise and of the possible structure of these elements. Following this framework, several pilot virtual environments are designed, for the purpose of identifying key design issues for evaluation. As it was impossible to evaluate the whole framework, six specific design issues, which have important implications for the design of space in virtual environments, are investigated by experimental methods of research. Apart from providing answers to these specific design issues, the experimental phase leads to a better understanding of the nature of space in virtual environments and to several hypotheses for future empirical research.
series	thesis:PhD
email
last changed	2003/10/29 21:37

_id	ddss9812
id	ddss9812
authors	Coomans, M.K.D. and Timmermans, H.J.P.
year	1998
title	A VR-User Interface for Design by Features
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	We present the design of a Virtual Reality based user interface (VR-UI). It is the interface for the VR-DIS system, a design application for the Building and Construction industry (VRDIS stands for Virtual Reality - Design Information System). The interface is characterised by a mixedrepresentation of the task domain: an analogue “mock-up view” is being integrated with a descriptive “feature view”. It uses a Fish Tank VR configuration which integrates the virtual objects in the designer’s normal working environment. The issues underlying the design of the feature view are discussed, as well as the choice of input devices.
series	DDSS
last changed	2003/08/07 16:36

_id	1beb
authors	Coomans, M.K.D. and Timmermans, H.J.P.
year	1998
title	A VR User Interface for Design by Features
source	Timmermans (ed.) Proceedings of the 4th Conference on Design and Decision Support Systems in Architecture and Urban Planning, Maastricht
summary	We present the design of a Virtual Reality based user interface (VR-UI). It is the interface for the VR-DIS system, a design application for the Building and Construction industry (VRDIS stands for Virtual Reality - Design Information System). The interface is characterised by a mixed representation of the task domain: an analogue "mock-up view" is being integrated with a descriptive "feature view". It uses a Fish Tank VR configuration which integrates the virtual objects in the designer's normal working environment. The issues underlying the design of the feature view are discussed, as well as the choice of input devices.
series	other
last changed	2003/04/23 15:50

_id	c721
authors	Dauner, J., Landauer, E. and Fraunhofer, I.
year	1998
title	3D Product Presentation Online: The Virtual Design Exhibition
source	VRML 98 - Third Symposium on the Virtual Reality Modeling Language. S. N. Spencer. Monterey, CA, ACM: 57-62
summary	VRML offers a high potential for product presentation: Instead of regarding flat, static pictures, configurable and animated 3D models embedded in entertaining environments provide a new way of product presentation. But seriously using VRML for this application domain means facing several challenges. We discuss these issues by using the Virtual Design Exhibition as a showcase. In this exhibition seven interior design companies show products with high aesthetic quality. We discuss how these aesthetics influence the VRML presentation and give some guidelines resulting from our experience. CR Categories and Subject Descriptors: H.5.1 [Information Interfaces and Presentation] Multimedia Information; Systems - Artificial realities H.5.2 [Information Interfaces and Presentation] User Interfaces - Screen design; I.3.6 [Computer Graphics] Methodology and Techniques - Interaction techniques
series	other
last changed	2003/04/23 15:50

_id	a15e
authors	Dijkstra, J. and Timmermans, H.J.P.
year	1998
title	Conjoint Analysis and Virtual Reality - A Review
source	Timmermans (ed.), 4 Ih Design and Decision Support Systems in Architecture and Urban Planning Conference.
summary	This paper describes a review of an ongoing research project which aims to develop a conjoint analysis and virtual reality (CA&VR) system as part of a design information system in virtual reality. The research project aims to develop a design system that can be used for interactive design and evaluation of design alternatives. A virtual environment model and dynamic virtual objects representing the different design aspects of interest can present a design. The different design aspects are called attributes. Each attribute level is a different state of the concerned virtual object. In the case of a virtual walk through a building design, the system can be viewed as a visual simulation of the environment. The CA&VR system has the potential advantage that individuals' preferences can be measured in designed hypothetical choice situations. As part of the ongoing research project, principles underlying the CA&VR system will be illustrated by simple examples. The status of this research project, both in retrospect and in prospect will be described.
series	other
last changed	2003/04/23 15:50

_id	ddss9818
id	ddss9818
authors	Dijkstra, Jan and Timmermans, Harry J.P.
year	1998
title	Conjoint Analysis and Virtual Reality – a Review
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	This paper describes a review of an ongoing research project which aims to develop a conjoint analysis and virtual reality (CA&VR) system as part of a design information system in virtual reality. The research project aims to develop a design system that can be used for interactive design and evaluation of design alternatives. A virtual environment model and dynamic virtual objects representing the different design aspects of interest can present a design. The different design aspects are called attributes. Each attribute level is a different state of the concerned virtual object. In the case of a virtual walk through a building design, the system can be viewed as a visual simulation of the environment. The CA&VR system has the potential advantage that individuals’ preferences can be measured indesigned hypothetical choice situations. As part of the ongoing research project, principles underlying the CA&VR system will be illustrated by simple examples. The status of this research project, both in retrospect and in prospect will be described.
series	DDSS
last changed	2003/08/07 16:36

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