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	sigradi2014_151
id	sigradi2014_151
authors	Westermeyer, Juan Carlos Briede; Adonis Arriagada F.
year	2014
title	Plataforma Colaborativa para la gestión de proyectos de diseño industrial [Collaborative Platform for the Management of Industrial Design Projects]
source	SiGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 303-307
summary	Project development within Industrial Design generates a wide range of information unique to each stage of the process. Managing and monitoring design projects is a particularly complex and challenging task, especially in a classroom setting. The use of a digital platform provides an opportunity to save, organize and guide design projects and facilitates collaborative feedback between students and professors. A preliminary version of the present study was carried out using open-source information technologies: PHP 5.2.8, MySQL 5.1.30, Jquery 1.7.1.mins, Smarty-2.6.9. This proposal seeks to complement the on-site class component in order to provide follow-up, mapping and feedback on design projects.
series	SIGRADI
email
last changed	2016/03/10 10:03

_id	3b2a
authors	Westin, S., Arvo, J. and Torrance, K.
year	1992
title	Predicting reflectance functions from complex surfaces
source	Computer Graphics, 26(2):255-264, July 1992
summary	We describe a physically-based Monte Carlo technique for approximating bidirectional re•ectance distribution functions (BRDFs) for a large class of geometries by directly simulating optical scattering. The technique is more general than previous analytical models: it removes most restrictions on surface microgeometry. Three main points are described: a new representation of the BRDF, a Monte Carlo technique to estimate the coef•cients of the representation, and the means of creating a milliscale BRDF from microscale scattering events. These allowthe prediction of scattering from essentially arbitrary roughness geometries. The BRDF is concisely represented by a matrix of spherical harmonic coef•cients; the matrix is directly estimated from a geometric optics simulation, enforcing exact reciprocity. The method applies to roughness scales that are large with respect to the wavelength of light and small with respect to the spatial density at which the BRDF is sampled across the surface; examples include brushed metal and textiles. The method is validated by comparing with an existing scattering model and sample images are generated with a physically-based global illumination algorithm.
series	journal paper
last changed	2003/04/23 15:50

_id	ecaade2007_058
id	ecaade2007_058
authors	Wetzel, Jean-Paul; Belblidia, Salim; Bignon, Jean-Claude
year	2007
title	Specification of an Operator for the Design of Architectural Forms: “Pleating”
source	Predicting the Future [25th eCAADe Conference Proceedings / ISBN 978-0-9541183-6-5] Frankfurt am Main (Germany) 26-29 September 2007, pp. 821-826
doi	https://doi.org/10.52842/conf.ecaade.2007.821
summary	During the creative phase, the architect introduces hypotheses and validates them by trying out various adjustments during the process of conception. The use of existing CAD tools during the conception phase is not compatible with the iterative aspect of this process. So the challenge is to define a model that takes into account the entire creative process in a trial and error framework during the conceptual phase. In this article we will define the “pleating” operator.
keywords	Morphological operation, pleating, folding, operator
series	eCAADe
email
last changed	2022/06/07 07:57

_id	02c6
authors	Wheeler, B.J.Q
year	1986
title	A Unified Model for Building
source	Computer-Aided Architectural Design Futures [CAAD Futures Conference Proceedings / ISBN 0-408-05300-3] Delft (The Netherlands), 18-19 September 1985, pp. 200-231
summary	It is commonly recognized that the time-honoured procedure for preparing an architectural design for building on site is inefficient. Each member of a team of consultant professionals makes an independently documented contribution. For a typical project involving an architect and structural, electrical, mechanical and public services engineers there will be at least five separate sets of general- arrangement drawings, each forming a model of the building, primarily illustrating one discipline but often having to include elements of others in order to make the drawing readable. For example, an air-conditioning duct-work layout is more easily understood when superimposed on the room layout it serves which the engineer is not responsible for but has to understand. Both during their parallel evolution and later, when changes have to be made during the detailed design and production drawing stages, it is difficult and time consuming to keep all versions coordinated. Complete coordination is rarely achieved in time, and conflicts between one discipline and another have to be rectified when encountered on site with resulting contractual implications. Add the interior designer, the landscape architect and other specialized consultants at one end of the list and contractors' shop drawings relating to the work of all the consultants at the other, and the number of different versions of the same thing grows, escalating the concomitant task of coordination. The potential for disputes over what is the current status of the design is enormous, first, amongst the consultants and second, between the consultants and the contractor. When amendments are made by one party, delay and confusion tend to follow during the period it takes the other parties to update their versions to include them. The idea of solving this problem by using a common computer-based model which all members of the project team can directly contribute to is surely a universally assumed goal amongst all those involved in computer-aided building production. The architect produces a root drawing or model, the 'Architect's base plan', to which the other consultants have read-only access and on top of which they can add their own write-protected files. Every time they access the model to write in the outcome of their work on the project they see the current version of the 'Architect's base plan' and can thus respond immediately to recent changes and avoid wasting time on redundant work. The architect meanwhile adds uniquely architectural material in his own overlaid files and maintains the root model as everybody's work requires. The traditional working pattern is maintained while all the participants have the ability to see their colleagues, work but only make changes to those parts for which they are responsible.
series	CAAD Futures
last changed	1999/04/03 17:58

_id	ijac20075208
id	ijac20075208
authors	White, Martin; Petridis, Panagiotis; Liarokapis, Fotis; Plecinckx, Daniel
year	2007
title	Multimodal Mixed Reality Interfaces for Visualizing Digital Heritage
source	International Journal of Architectural Computing vol. 5 - no. 2, pp. 322-337
summary	We have developed several digital heritage interfaces that utilize Web3D, virtual and augmented reality technologies for visualizing digital heritage in an interactive manner through the use of several different input devices. We propose in this paper an integration of these technologies to provide a novel multimodal mixed reality interface that facilitates the implementation of more interesting digital heritage exhibitions. With such exhibitions participants can switch dynamically between virtual web-based environments to indoor augmented reality environments as well as make use of various multimodal interaction techniques to better explore heritage information in the virtual museum. The museum visitor can potentially experience their digital heritage in the physical sense in the museum, then explore further through the web, visualize this heritage in the round (3D on the web), take that 3D artifact into the augmented reality domain (the real world) and explore it further using various multimodal interfaces.
series	journal
last changed	2007/08/29 16:23

_id	ecaade2009_keynote2
id	ecaade2009_keynote2
authors	Whitehead, Hugh
year	2009
title	Social Experiments in Design Technology
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference] Istanbul (Turkey) 16-19 September 2009
doi	https://doi.org/10.52842/conf.ecaade.2009.x.f4d
summary	The delivery of a successful project demands high levels of collaboration across an expanded design team, which now includes consultants, fabricators and contractors as well as architects and engineers. The pace of development in design technology has been very rapid during the last few years and there are now many software products which offer high levels of sophistication. Most provide associative and parametric modelling strategies, which can be further enhanced and extended by the use of scripting languages. Designers are becoming tool-builders while fabricators are becoming digital craftsmen. With the advent of fast efficient drawing extraction the industry is at last making determined steps towards a model-driven process. However there is no integrated platform which supports the free exchange of ideas, combined with the evaluation of performance, experimentation with production techniques and the evolution of project-specific workflows. In education the design schools have been quick to recognise the potential of the new design technology. This has led to a rapid expansion in course curricula that now offer many new specialisations, most of which also need to be under-pinned by a good grounding in descriptive geometry, mathematics and physics. The architect as a generalist, who coordinates the work of specialists, is being challenged by an increasing breadth of technical studies that require more than just a superficial depth of understanding. In practice the gulf is widening even more rapidly. New graduates, who often have spectacular expertise in modelling and fluency in scripting languages, do not yet have the design and construction experience necessary to direct their efforts to best effect. On the other hand people running project teams do not have the technical background to understand the potential of the skills and resources that are available. Today there is no longer the continuity that used to derive from apprenticeship. As we experiment we find that tools based on new ideas and techniques can radically change workflow – but fear of the unknown can provoke resistance. So the problems we face in harnessing the new technology are as much social and cultural as they are technical. The presentation will focus on developing attitudes towards tool-building with the aim of integrating design, analysis and production. This is part of a continual and quite gradual process, which requires the ability to play interpretive roles that help to bring about cultural change. Examples will be shown from the work of the Specialist Modelling Group at Foster+Partners who now have tenyears experience in deploying design technology in an environment where research is intensely project driven.
series	eCAADe
type	keynote paper
last changed	2022/06/07 07:50

_id	cf2007_115
id	cf2007_115
authors	Whiting, Emily; Jonathan Battat and Seth Teller
year	2007
title	Topology of Urban Environments: Graph construction from multi-building floor plan data
source	Computer Aided Architectural Design Futures / 978-1-4020-6527-9 2007 [Proceedings of the 12th International Conference on Computer Aided Architectural Design Futures / 978-1-4020-6527-9] Sydney (Australia) 11–13 July 2007, pp. 115-128
summary	This paper introduces a practical approach to constructing a hybrid 3D metrical–topological model of a university campus or other extended urban region from labeled 2D floor plan geometry. An exhaustive classification of adjacency types is provided for a typical infrastructure, including roads, walkways, green-space, and detailed indoor spaces. We extend traditional lineal techniques to 2D open spaces, incorporating changes in elevation. We demonstrate our technique on a dataset of approximately 160 buildings, 800 floors, and 44,000 spaces spanning indoor and outdoor areas. Finally, we describe MITquest, a web application that generates efficient walking routes.
series	CAAD Futures
email
last changed	2007/07/06 12:47

_id	d3e9
authors	Whyte, J., Bouchlaghem, N., Thorpe, A. and McCaffer, R.,
year	2000
title	From CAD to virtual reality: modelling approaches, data exchange and interactive 3D building design tools
source	Automation in Construction 10 (1) (2000) pp. 43-55
summary	Virtual reality has the potential to improve visualisation of building design and construction, but its implementation in the industry has yet to reach maturity. Present day translation of building data to virtual reality is often unidirectional and unsatisfactory. Three different approaches to the creation of models are identified and described in this paper. Consideration is given to the potential of both advances in computer-aided design and the emerging standards for data exchange to facilitate an integrated use of virtual reality. Commonalities and differences between computer-aided design and virtual reality packages are reviewed, and trials of current system, are described. The trials have been conducted to explore the technical issues related to the integrated use of CAD and virtual environments within the house building sector of the construction industry and to investigate the practical use of the new technology.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	ef47
authors	Wiegand, T.
year	1996
title	Interactive Rendering of CSG Models
source	Computer Graphics Forum, Vol. 15, No. 4.
summary	We describe a CSG rendering algorithm that requires no evaluation of the CSG tree beyond normalization and pruning. It renders directly from the normalized CSG tree and primitives described (to the graphics system) by their facetted boundaries. It behaves correctly in the presence of user defined, "near'' and "far'' clipping planes. It has been implemented on standard graphics workstations using Iris GL and OpenGL graphics libraries. Modestly sized models can be evaluated and rendered at interactive (less than a second per frame) speeds. We have combined the algorithm with an existing B-rep based modeller to provide interactive rendering of incremental updates to large models.
series	journal
more	http://www.arct.cam.ac.uk/research/pubs/
last changed	2003/05/15 10:29

_id	4e2e
authors	Wiener, Norbert
year	1961
title	Cybernetics : Control and Communication in the Animal and the Machine --2nd. ed
source	212 p. Cambridge, Mass.: The MIT press, 1961. includes index
summary	It is the author belief that cybernetics should be considered not merely as a program to be carried out in the future, but as an existing science. In this book the author's intention is to express and to exemplify his ideas on cybernetics and to display some of his personal philosophical reflections
keywords	robotics, communication, intelligence, psychology, cybernetics
series	CADline
last changed	1999/02/12 15:10

_id	ijac20075404
id	ijac20075404
authors	Wierzbicki, Madalina N.; de Silva, Clarence W.
year	2007
title	Design Tools for Foldable Structures with Application of Fuzzy Logic
source	International Journal of Architectural Computing vol. 5 - no. 4, pp. 645-662
summary	Rigidly foldable shells offer tremendous potential for developing kinetic architectural structures. However, the added element of motion poses new design challenges. Initially, sketchy shell geometry is constructed to reflect the intended form. Further steps involve assuring an error free folding within a range that satisfies desired functional requirements. The kinematics of a parallel topology of the shell's geometry is difficult to express algorithmically what prevents from developing of automated adjustment tools based on computational methods. The geometry can be adjusted manually based on intuitive observations; however the process is tedious, time consuming and unpredictable. This paper develops automated adjustment tools based on the intuitive approach of a human designer. The study applies the fuzzy logic formalism as a computational interface between human approach and structured adjustments to the geometry. The advantages of fuzzy logic stem from its natural ability to represent human knowledge and effectiveness in reconciling ambiguities, uncertainties and redundancies that the intuitive human approach brings along. The development steps of fuzzy logic based algorithm are presented. Performed evaluation tests and the results are discussed.
series	journal
last changed	2008/02/25 20:30

_id	8aab
authors	Wiezel, Avi and Becker, Rachel
year	1992
title	Integration of Performance Evaluation in Computer Aided Design
source	New York: John Wiley & Sons, 1992. pp. 171-181 : ill. includes bibliography
summary	An integrated computerized system for evaluation of the overall performance of a building was developed. The system exemplifies the capability of appropriate CAD techniques to upgrade the decision making process and the quality of the design. This paper describes the specific problems arising from the integration of the performance evaluation within the existing CAAD process
keywords	CAD, systems, evaluation, civil engineering, integration, performance, building
series	CADline
last changed	2003/06/02 13:58

_id	88d0
authors	Wijk, J.J. van and Vries, B. de and Overveld, C. van
year	1999
title	Towards an understanding 3D VR architectural design system
source	A. Nijholt and O. Donk and B. van Dijk (eds), Interactions in Virtual Worlds, pp. 219-224
summary	Current systems for Computer Aided Architectural Design are of limited use for the early phase of a design. We give a speci cation of a new sys- tem, in which we strive for a more natural and intuitive interaction. A key element is geometric analysis. From the input of the user, implicit geo- metric and structural relations are derived, which are used during subsequent interaction.
series	other
email
last changed	2003/04/23 15:50

_id	cf2009_515
id	cf2009_515
authors	Wikberg, Fredrik; Ekholm Anders
year	2009
title	Architectural objects and systems building
source	T. Tidafi and T. Dorta (eds) Joining Languages, Cultures and Visions: CAADFutures 2009, PUM, 2009, pp. 515- 529
summary	In this paper we explore the concept of “architectural object” as a representation of a real “situation” involving people, behavior, experience and environment. The purpose is to define a selection of possible configurable architectural objects that reflect the variability of situations possible to achieve using an industrialized building system. The paper presents a theoretical foundation for organizing architectural objects in a level order of design in different levels. It is applied to configure building projects in a company with off site production of volume elements, and proposes how these objects could be developed into architectural objects.
keywords	Architectural object, situation, design, configuration, decision levels
series	CAAD Futures
email
last changed	2009/06/08 20:53

_id	6b2f
authors	Wilensky, Robert, Arens, Yigal and Chin, David
year	1984
title	Talking to UNIX in English: An Overview of UC
source	Communications of the ACM Vol. 27.no. 6 (June, 1984): pp. 574-593. includes bibliography
summary	UC is a natural language help facility which advises users in using the UNIX operating system. Users can query UC about how to do things, command names and formats, online definitions of UNIX or general operating systems terminology, and debugging problems in using commands. UC is comprised of the following components: a language analyzer and generator, a context and memory model, an experimental common-sense planner, highly extensible knowledge bases on both the UNIX domain and the English language, a goal analysis component, and a system for acquisition of new knowledge through instruction in English. The language interface of UC is based on a 'phrasal analysis' approach which integrates semantic, grammatical and other types of information. In addition, it includes capabilities for ellipsis resolution and reference disambiguation
keywords	UNIX, natural languages, user interface, knowledge acquisition
series	CADline
last changed	2003/06/02 13:58

_id	ef3d
authors	Wilhelms, Jane
year	1987
title	Using Dynamic Analysis for Realistic Animation of Articulated Bodies
source	IEEE Computer Graphics and Applications. June, 1987. Vol. 7: pp. 12-27 : ill. (some col.). includes bibliography
summary	A major problem in animation is creating motion that appears natural and realistic, particularly in such complex articulated bodies as humans and other animals. At present, truly lifelike motion is produced mainly by copying recorded images, a tedious and lengthy process that requires considerable external equipment. An alternative is the use of dynamic analysis to predict motion. Using dynamic motion control, bodies are treated as masses acting under the influence of external and internal forces and torques. Dynamic control is advantageous because motion is naturally restricted to physically realizable patterns, and many types of motion can be predicted automatically. Use of dynamics is computationally expensive and specifying controlling forces and torques can be difficult. However, there is evidence that dynamics offers hope for more realistic, natural, and automatic motion control. Because such motion simulates real world conditions, an animation system using dynamic analysis is also a useful tool in such related fields as robotics and biomechanics
keywords	CAD, animation, computer graphics, simulation
series	CADline
last changed	1999/02/12 15:10

_id	6078
authors	Wilkins, Brian and Barrett, John
year	2000
title	The virtual construction site: a web-based teaching/learning environment in construction technology
source	Automation in Construction 10 (1) (2000) pp. 169-179
summary	Site visits form an important component in teaching/learning in many aspects of civil engineering education. However, due to scheduling and access difficulties, and the overriding need for safety, real time site visits may not be possible, and alternative approaches need to be investigated. One approach, described in this paper, is the creation of multimedia databases of actual buildings under construction. This material, suitably structured, can then be delivered through the World Wide Web or from a CD-ROM, thus creating "virtual construction sites." The web site described in this paper forms part of a much larger group of web sites developed by four Universities in Hong Kong over the past 2 years and now approaching completion. This large series of linked web sites is known as CIVCAL and provides a comprehensive teaching/learning environment for students in many aspects of civil engineering. This paper describes the web site being developed by City University within CIVCAL. The City University web site is known as the Virtual Building & Construction Environment and is designed specifically to support teaching/learning in building construction technology.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	ijac201412204
id	ijac201412204
authors	Wilkinson, Samuel; Sean Hanna
year	2014
title	Approximating Computational Fluid Dynamics for Generative Tall Building Design
source	International Journal of Architectural Computing vol. 12 - no. 2, 155-178
summary	Background literature review, methodology, results, and analysis are presented for a novel approach to approximating wind pressure on tall buildings for the application of generative design exploration and optimisation.The predictions are approximations of time-averaged computational fluid dynamics (CFD) data with the aim of maintaining simulation accuracy but with improved speed.This is achieved through the use of a back-propagation artificial neural network (ANN) with vertex-based shape features as input and pressure as output.The training set consists of 600 procedurally generated tall building models, and the test set of 10 real building models; for all models in both sets, a feature vector is calculated for every vertex. Over the test set, mean absolute errors against the basis CFD are 1.99–4.44% (_:2.10–5.09%) with an on-line process time of 14.72–809.98s (0.028s/sample). Studies are also included on feature sensitivity, training set size, and comparison of CFD against prediction times. Results indicate that prediction time is only dependent on the number of test model vertices, and is therefore invariant to basis CFD time.
series	journal
last changed	2019/05/24 09:55

_id	64eaea2001
id	64eaea2001
authors	Willecke, Jörg
year	2002
title	Prognosis of Landscape Change for the Area of Ellingerode (Hessen, Germany)
source	Environmental Simulation - New Impulses in Planning Processes [Proceedings of the 5th European Architectural Endoscopy Association Conference / ISBN 3-922602-85-1]
summary	In the academic year of 1999/2000, a student project at the University of Kassel started to work on a prognosis of landscape change for a mid mountain range area of Hessen (Germany). The project, named ”Change of Landscape in the Area of Ellingerode”, was based at first on the question: "How does the landscape change if the AGENDA 2000 (the present agricultural policy of the European Union) takes effect?”. The students soon realized that to give an answer on this question, basic inquiry on the key factors that govern the changes of landscape are needed. So actually the primary question was ”How does landscape change?”
series	EAEA
more	http://info.tuwien.ac.at/eaea
last changed	2005/09/09 10:43

_id	caadria2006_001
id	caadria2006_001
authors	WILLIAM J. MITCHELL
year	2006
title	FROM SKETCHPAD TO CITY OF BITS: A Story of Shifting Intentions
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 1-5
doi	https://doi.org/10.52842/conf.caadria.2006.x.o2h
summary	By my count this year marks the fiftieth birthday of the field of computer-aided design. It is, therefore, an appropriate moment to look back on how the field has developed in its first half century and then to consider what we might expect in the coming decades – the decades that will see the continued development of what I have called the City of Bits. The story is, as we shall see, one of shifting intentions; at each stage in the evolution of computer-aided design, the technology has found niches in practice determined both by its capabilities at that particular historical moment and by prevailing economic and cultural imperatives.
series	CAADRIA
email
last changed	2022/06/07 07:50

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