Cumincad : CUMINCAD Papers : Search Results

CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id	53c6
authors	Mardaljevic, John
year	2000
title	Daylight Simulation: Validation, Sky Models and Daylight Coefficients
source	De Montfort University, Leicester, UK
summary	The application of lighting simulation techniques for daylight illuminance modelling in architectural spaces is described in this thesis. The prediction tool used for all the work described here is the Radiance lighting simulation system. An overview of the features and capabilities of the Radiance system is presented. Daylight simulation using the Radiance system is described in some detail. The relation between physical quantities and the lighting simulation parameters is made clear in a series of progressively more complex examples. Effective use of the inter-reflection calculation is described. The illuminance calculation is validated under real sky conditions for a full-size office space. The simulation model used sky luminance patterns that were based directly on measurements. Internal illuminance predictions are compared with measurements for 754 skies that cover a wide range of naturally occurring conditions. The processing of the sky luminance measurements for the lighting simulation is described. The accuracy of the illuminance predictions is shown to be, in the main, comparable with the accuracy of the model input data. There were a number of predictions with low accuracy. Evidence is presented to show that these result from imprecision in the model specification - such as, uncertainty of the circumsolar luminance - rather than the prediction algorithms themselves. Procedures to visualise and reduce illuminance and lighting-related data are presented. The ability of sky models to reproduce measured sky luminance patterns for the purpose of predicting internal illuminance is investigated. Four sky models and two sky models blends are assessed. Predictions of internal illuminance using sky models/blends are compared against those using measured sky luminance patterns. The sky model blends and the Perez All-weather model are shown to perform comparably well. Illuminance predictions using measured skies however were invariably better than those using sky models/blends. Several formulations of the daylight coefficient approach for predicting time varying illuminances are presented. Radiance is used to predict the daylight coefficients from which internal illuminances are derived. The form and magnitude of the daylight coefficients are related to the scene geometry and the discretisation scheme. Internal illuminances are derived for four daylight coefficient formulations based on the measured luminance patterns for the 754 skies. For the best of the formulations, the accuracy of the daylight coefficient derived illuminances is shown to be comparable to that using the standard Radiance calculation method. The use of the daylight coefficient approach to both accurately and efficiently predict hourly internal daylight illuminance levels for an entire year is described. Daylight coefficients are invariant to building orientation for a fixed building configuration. This property of daylight coefficients is exploited to yield hourly internal illuminances for a full year as a function of building orientation. Visual data analysis techniques are used to display and process the massive number of derived illuminances.
series	thesis:PhD
email
more	http://www.iesd.dmu.ac.uk/~jm/thesis/
last changed	2003/02/12 22:37

_id	cb96
authors	Buckley, E., Zarli, A., Reynolds, C. and Richaud, O.
year	1998
title	Business objects in construct IT
source	R. Amor (ed.) Product and Process Modelling in the Building Industry, Building Research Establishment, Watford, England, pp. 117-130
summary	Objective: EU Esprit Project 25.741 Wonda aims to meet the needs for Enterprise Information Systems and E-Commerce in the construction and banking industries. Wonda aims to deliver a solution suitable for contracting firms. The solution should enable take-up by SMEs, incremental value-added growth (perhaps Incremental Radicalism), mobile computing for location independent access by project managers and quick set-up of virtual enterprises reflecting both the short customer-supplier relationships in the industry and the need of construction firms to constantly re-configure and re-invent themselves. Method: Wonda will develop an open and secure framework for business objects and electronic payment. Business objects can be defined as software components, which encapsulate business rules and procedures and which can run anywhere on the network. They provide secure and sophisticated access to diverse electronic content and software applications. Indeed, just as a building can be described as a unique arrangement of standard products, a building project can be described as a unique arrangement of standard product data. Business Objects give a high level view of product data. They can be assembled into frameworks to support high-level views on industrial projects. The open framework will enable a distributed architecture through CORBA thus facilitating the interoperation of heterogeneous software components as found in legacy systems. The modular security of the framework and its support for electronic payment ensure authenication, confidentiality and non-repudiation as required for the business processes of construction virtual enterprises. Indeed the modular and incremental implemenation of security will be achieved partly through a Business Object architecture. Results will comprise o a pilot in 2 product cycles, o an open & secure framework architecture, o Commotion middleware for enabling business objects on top of Corba, o WeBuild (construction), WeBank (banking) and SILK (security) business objects o OpenDMX component to enable object orientated access to legacy databases.
series	other
last changed	2003/04/23 15:14

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

_id	ba7c
authors	Cox, D.A. and Chugh, J.S. (et al.)
year	1998
title	The Usability of Transparent Overview Layers
source	CHI 98: 301-302
summary	Viewports into large visual workspaces are sometimes supplemented by a separate window that displays a miniaturized overview of the entire workspace. Instead of this separate window, we have layered a transparent version of the overview atop the viewport. Because the overview fills the display, it becomes the largest size possible. An exploratory study indicates that people can use this unusual system, where they switch between layers when performing a construction task.
series	other
last changed	2003/04/23 15:50

_id	45
authors	D. I. Fernadez Prato. D. I. Beatriz Gal·n
year	1998
title	El Impacto de la Informatica Sobre el Mundo de los Objetos Cotidianos (The Impact of Computing on the World's Daily Objects)
source	II Seminario Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings / ISBN 978-97190-0-X] Mar del Plata (Argentina) 9-11 september 1998, pp. 336-341
summary	The computer impact over daily objects world: methodological reflection from the Philips design team workshop "Vision of the Future".The impact of computers in the industrial design world is often limited to the condition of tool, used in the conception process, and, in a minor scale, it is shown integrating and reprocessing the objects, and the every day rituals that nourish them. The integration of microelectronics into the world of objects has been given theoric basement by those who are responsible for technological development (which we describe in this work), displaying several trends tendencies towards interactive, flexibility and, dematerialization and loss of leading role of the object by its integration in the net. The "Vision of the Future" experience, accomplished by the Philips design team, is a look, from the point of view of design, about this subject. The exploration of this new experience through the world of the objects of the future, shows us that the technologies are far away from dematerializing culture, and even threat the leading role of the object. Many of the products that are studied in Philips work-shop, are recreations of old objects but with new functional possibilities. We can see that, although technology allows rituals to be destroyed, yet they preserve themselves deflecting the logical evolution of technology. In this study, we display a methodology to generate interactive objects, following the most significant examples of the work we studied.
series	SIGRADI
email
last changed	2016/03/10 09:50

_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	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	2de0
authors	Dobson, Adrian
year	1998
title	Exploring Conceptual Design using CAD Visualisation and Virtual Reality Modelling
source	Computerised Craftsmanship [eCAADe Conference Proceedings] Paris (France) 24-26 September 1998, pp. 68-71
doi	https://doi.org/10.52842/conf.ecaade.1998.068
summary	This paper evaluates the possibilities for the use of computer aided design and desktop virtual reality technologies as tools for architectural composition. An experimental teaching programme involving undergraduate architectural students at the University of Luton, in which aspects of compositional theory are explored through the direct creation of architectural form and space in digital formats is described. In the programme principles of architectural composition, based upon the ordering and organisation of typological architectural elements according to established rules of composition are introduced to the students through the study of recognised works of design theory. CAD and desktop virtual reality are then used to define and manipulate architectural elements, and to make formal and spatial evaluations of the environments created. The paper describes the theoretical context of the work, assesses the suitability of the software used for performing compositional manipulations, and evaluates the qualities of immersion and intuitive feedback which virtual reality based modelling can offer in the design visualisation process. The teaching programme utilises standard software packages, including AutoCAD, and 3D Studio, as well as Superscape VRT, a PC based desktop VR package.
series	eCAADe
more	http://www.paris-valdemarne.archi.fr/archive/ecaade98/html/13dobson/index.htm
last changed	2022/06/07 07:55

_id	c86a
authors	Dudek, D., Dudek, K. and Przystupa, F.W.
year	1998
title	Reduction of noise in neighborhood of lignite strip mine
source	Automation in Construction 7 (5) (1998) pp. 413-426
summary	Methods of identifying, assessing, reducing the number of causes of noise, and counteracting noise (potential vibrational acoustic signal sources, the identification and location of the sources, noise propagation over terrain, working conditions) in the neighborhood of a lignite strip mine are presented. On the basis of noise measurements and an assessment of the propagation conditions, the obtained results are analyzed against a background of environmental noise arduousness standards. Conclusions and guidelines relating to further material-design optimization efforts are given.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_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	9bee
authors	Gerzso, J. Michael
year	2001
title	Automatic Generation of Layouts of an Utzon Housing System via the Internet
source	Reinventing the Discourse - How Digital Tools Help Bridge and Transform Research, Education and Practice in Architecture [Proceedings of the Twenty First Annual Conference of the Association for Computer-Aided Design in Architecture / ISBN 1-880250-10-1] Buffalo (New York) 11-14 October 2001, pp. 202-211
doi	https://doi.org/10.52842/conf.acadia.2001.202
summary	The article describes how architectural layouts can be automatically generated over the Internet. Instead of using a standard web server sending out HTML pages to browser client, the system described here uses an approach that has become common since 1998, known as three tier client/server applications. The server part of the system contains a layout generator using SPR(s), which stands for “Spatial Production Rule System, String Version”, a standard context- free string grammar. Each sentences of this language represents one valid Utzon house layout. Despite the fact that the system represents rules for laying out Utzon houses grammatically, there are important differences between SPR(s) and shape grammars. The layout generator communicates with Autocad clients by means of an application server, which is analogous to a web server. The point of this project is to demonstrate the idea that many hundreds or thousands of clients can request the generation of all of the Utzon layouts simultaneously over the Internet by the SPR(s) server, but the server never has to keep track when each client requested the generation of all of the layouts, or how many layouts each client has received.
keywords	Internet, Spatial-Production-Rules Grammars, Utzon
series	ACADIA
email
last changed	2022/06/07 07:51

_id	dd16
authors	Gibson, Kathleen
year	1999
title	STUDIO @ CORNELL
source	ACADIA Quarterly, vol. 18, no. 2, pp. 18-21
doi	https://doi.org/10.52842/conf.acadia.1999.018.2
summary	Unique to the interior design program at Cornell University is a planned pedagogical approach requiring equal emphasis toward manual and digital graphic communication at the freshman level. Prior to 1998, computer-based instruction only occurred at the junior year of study. Recognizing that cultural and symbolic biases against digital media were formally being instituted by curriculum policy, faculty searched for a new perspective. Central to success was the removal of illogically placed boundaries, both mental and physical. In response, students are now encouraged to cultivate a fluid dexterity between traditional and digital methods, at times using various skills concurrently for design analysis and representation (Figures 1, 2, 3, 4, 5, 6, 7). Course content for DEA115 ranges from basic orthographic drafting, paraline projection, and perspective drawing to color rendering and composition. Students utilize a full range of media: pencil, ink, marker, pastel, AutoCAD, 3DS/ MAX, and Photoshop in this graphics studio. Course meetings total six contact hours per week, constituting a three credit hour class. Assignments are purposefully created to shatter digital myths. For example, instead of a standard, rote drafting exercise, AutoCAD is used to explore design ideas through systemic object manipulation (Figures 8, 9).
series	ACADIA
last changed	2022/06/07 07:51

_id	5cab
authors	Jain, A., Kensek, K. and Noble, D.
year	1998
title	An interactive Web-based teaching tool for simplified 3D analysis of solar rhythms
source	Automation in Construction 8 (2) (1998) pp. 181-194
summary	This case study presents the World Wide Web as an appropriate medium for architectural teaching. The prototypical tool VRSolar uses simple programming and existing Web resources to help in the teaching of topics related to the movement of the sun and its effects on the built environment. Using JavaScript, this tool is capable of generating real time Web content in html and VRML based on user input. Accessible on the Web from within a standard Web browser, this tool calculates the solar positions of any location on earth and indicates the solar access to a given site in the form of a three-dimensional Web page, which the user can view, navigate through, and animate.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	6df0
authors	Komatsu, Kiichiro and Watanabe, Shun
year	1998
title	Spatial Database for Model Analysis Methods
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. 203-212
doi	https://doi.org/10.52842/conf.caadria.1998.203
summary	In the field of architectural and urban planning and design, computer education needs to move beyond basic computer literacy and have more emphasis placed on special subjects related to planning and design. How to manage spatial data is becoming an essential issue for research and education in planning and design especially in the analysis and evaluation phases. This paper discusses the importance of spatial data in planning education and shows how a common spatial database for model analysis methods was constructed at the University of Tsukuba. The database consists of many geographical and statistical data files classified under the standard region mesh codes and covers the whole country from global areas to local areas. Web-based instructions about how to use the database have also been prepared which enable students to study practical spatial analysis by themselves.
keywords	Education, Database, GIS, Spatial Analysis
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:51

_id	88c3
authors	Koshak, Nabeel A. and Gross, Mark D.
year	1998
title	3D Modeling of Historic Makkah - Strategies for Constructing Accurate CAD Models of Historic Buildings
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. 103-112
doi	https://doi.org/10.52842/conf.caadria.1998.103
summary	In this paper, we outline the problem of historic preservation and the opportunities that rigorous CAD models provide to address it, describe the particular class of buildings in Makkah that we are concerned with, and discuss a modeling strategy that takes advantage of common elements, symmetry and repetition in the buildings' construction, and standard operations in current CAD programs. We briefly discuss tools for architectural heritage recording, construction of CAD models of historic buildings, and systematic analysis of built form. Finally, the paper shows how the method can streamline the construction of accurate CAD models.
keywords	Electronic Design Media, Rapid Prototypes, Scene and Product Modeling, Models of Design, Precedence and Prototypes
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:51

_id	40f8
authors	Lee, E., Woo, .S., Shiosaka, Y. and Sasada, T.
year	1998
title	Alternative Design Comparative System in Collaborative Design
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. 327-335
doi	https://doi.org/10.52842/conf.caadria.1998.327
summary	The evaluation of alternative design sets is important phase for quick design decision and new design conception, and it is repeatedly processed. To proceed design process in standard, the repetition is reduced to minimum. And design must be optimized in limited cost and time. For smooth and fast process lots of alternative design sets are provided within the limit of possibility and it must be evaluated appropriately. It's possible to evaluate alternative design sets using various media. This paper describes the characteristics of various media which have been used for evaluation of alternative design sets, and propose alternative design comparative system based on the findings of case studies.
keywords	Collaborative Design, VRML, JavaScript, Java, Communication
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:51

_id	791e
id	791e
authors	Monreal, Amadeo; Jacas, Joan
year	2004
title	COMPUTER AIDED GENERATION OF ARCHITECTURAL TYPOLOGIES
source	Proceedings of the Fourth International Conference of Mathematics & Design, Special Edition of the Journal of Mathematics & Design, Volume 4, No.1, pp. 73-82.
summary	The work we present may be considered as the consolidation of a methodology that was already outlined in the paper presented in the second M&D congress held in San Sebastian (1998). We establish that, in architectural design, the computer is only used in the last step in order to achieve the traditional Euclidean design in a more precise and comfortable way and to improve the quality of the handmade designs. Our proposal consists in modifying the process from the very beginning of the creative act. That is, when the design conception is born. If we want to obtain the maximum benefit of the computer possibilities, we ought to support this conception by means of a language tuned with the mentioned tool. Due to the fact that the internal language used by the computer for producing graphics is mathematical, we must incorporate, in some way, this language in the codification of the creative process. In accordance with this setting, we propose a mathematical grammar for the design based on the construction of modulated standard mathematical functions. This grammar is developed independently from the graphical software and it is specified only when a particular computer program for the effective generation on the graphical objects is selected.
series	other
type	normal paper
email
last changed	2005/04/07 12:49

_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	cf2009_poster_43
id	cf2009_poster_43
authors	Oh, Yeonjoo; Ellen Yi-Luen Do, Mark D Gross, and Suguru Ishizaki
year	2009
title	Delivery Types And Communication Modalities In The Flat-Pack Furniture Design Critic
source	T. Tidafi and T. Dorta (eds) Joining Languages Cultures and Visions: CAADFutures 2009 CD-Rom
summary	A computer-based design critiquing system analyzes a proposed solution and offers critiques (Robbins 1998). Critiques help designers identify problems as well as opportunities to improve their designs. Compared with human critics, today’s computer-based critiquing systems deliver feedback in quite restricted manner. Most systems provide only negative evaluations in text; whereas studio teachers critique by interpreting the student’s design, introducing new ideas, demonstrating and giving examples, and offering evaluations (Bailey 2004; Uluoglu 2000) using speech, writing, and drawing to communicate (Anthony 1991; Schön 1983). This article presents a computer-based critiquing system, Flat-pack Furniture Design Critic (FFDC). This system supports multiple delivery types and modalities, adapting the typical system architecture of constraint-based intelligent tutors (Mitrovic et al. 2007).
keywords	Critiquing system, design critiquing
series	CAAD Futures
type	poster
email
last changed	2009/07/08 22:12

_id	7346
authors	Peyret, F.
year	1998
title	A new facility for testing accurate positioning systems for road construction robotics
source	Automation in Construction 8 (2) (1998) pp. 209-221
summary	The first part of the paper gives a definition of positioning in the context of road work sites and stresses the advantages offered by the new generation of positioning systems. A logical classification of these systems is also proposed. The `global positioning system' (GPS) technique, as one of the most promising techniques, is detailed. The main point of the paper is the presentation of a new test facility for positioning systems which has been set up at the `Laboratoire Central des Ponts et Chaussées' (Central Laboratory of Roads and Bridges). First, its principle is described, based on the re-construction of a 6D reference trajectory to which the measurements of the system in test are compared. Then, the operation of the facility and the post-treatment software which has been specially developed for it are described. Finally, the results of some recent studies are given, results which would have been hard to obtain without using the SESSYL facility. During the first study, the facility was used to establish an accurate time-model of the vertical error and this model allowed us to propose an innovative method for improving the vertical accuracy. During the second study, SESSYL proved its capability of differentiating several state-of-the-art GPS receivers of the same category.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

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