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	sigradi2006_e131c
id	sigradi2006_e131c
authors	Ataman, Osman
year	2006
title	Toward New Wall Systems: Lighter, Stronger, Versatile
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 248-253
summary	Recent developments in digital technologies and smart materials have created new opportunities and are suggesting significant changes in the way we design and build architecture. Traditionally, however, there has always been a gap between the new technologies and their applications into other areas. Even though, most technological innovations hold the promise to transform the building industry and the architecture within, and although, there have been some limited attempts in this area recently; to date architecture has failed to utilize the vast amount of accumulated technological knowledge and innovations to significantly transform the industry. Consequently, the applications of new technologies to architecture remain remote and inadequate. One of the main reasons of this problem is economical. Architecture is still seen and operated as a sub-service to the Construction industry and it does not seem to be feasible to apply recent innovations in Building Technology area. Another reason lies at the heart of architectural education. Architectural education does not follow technological innovations (Watson 1997), and that “design and technology issues are trivialized by their segregation from one another” (Fernandez 2004). The final reason is practicality and this one is partially related to the previous reasons. The history of architecture is full of visions for revolutionizing building technology, ideas that failed to achieve commercial practicality. Although, there have been some adaptations in this area recently, the improvements in architecture reflect only incremental progress, not the significant discoveries needed to transform the industry. However, architectural innovations and movements have often been generated by the advances of building materials, such as the impact of steel in the last and reinforced concrete in this century. There have been some scattered attempts of the creation of new materials and systems but currently they are mainly used for limited remote applications and mostly for aesthetic purposes. We believe a new architectural material class is needed which will merge digital and material technologies, embedded in architectural spaces and play a significant role in the way we use and experience architecture. As a principle element of architecture, technology has allowed for the wall to become an increasingly dynamic component of the built environment. The traditional connotations and objectives related to the wall are being redefined: static becomes fluid, opaque becomes transparent, barrier becomes filter and boundary becomes borderless. Combining smart materials, intelligent systems, engineering, and art can create a component that does not just support and define but significantly enhances the architectural space. This paper presents an ongoing research project about the development of new class of architectural wall system by incorporating distributed sensors and macroelectronics directly into the building environment. This type of composite, which is a representative example of an even broader class of smart architectural material, has the potential to change the design and function of an architectural structure or living environment. As of today, this kind of composite does not exist. Once completed, this will be the first technology on its own. We believe this study will lay the fundamental groundwork for a new paradigm in surface engineering that may be of considerable significance in architecture, building and construction industry, and materials science.
keywords	Digital; Material; Wall; Electronics
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	diss_ruhl
id	diss_ruhl
authors	Ruhl, Volker R.
year	1997
title	Computer-Aided Design and Manufacturing of Complex Shaped Concrete Formwork
source	Doctor of Design Thesis, Graduate School of Design, Harvard University, Cambridge, MA
summary	The research presented in this thesis challenges the appropriateness of existing, conventional forming practices in the building construction industry--both in situ or in prefabrication--for building concrete "freeforms," as they are characterized by impracticality and limitations in achieved geometric/formal quality. The author's theory proposes the application of alternative, non-traditional construction methods derived from the integration of information technology, in the form of Computer-Aided Design (CAD), Engineering (CAE) and Manufacturing (CAM), into the concrete tooling and placing process. This concept relies on a descriptive shape model of a physically non-existent building element which serves as a central database containing all the geometric data necessary to completely and accurately inform design development activities as well as the construction process. For this purpose, the thesis orients itself on existing, functioning models in manufacturing engineering and explores the broad spectrum of computer-aided manufacturing techniques applied in this industry. A two-phase, combined method study is applied to support the theory. Part I introduces the phenomenon of "complexity" in the architectural field, defines the goal of the thesis research and gives examples of complex shape. It also presents the two analyzed technologies: concrete tooling and automation technology. For both, it establishes terminology, classifications, gives insight into the state-of-the-art, and describes limitations. For concrete tooling it develops a set of quality criteria. Part II develops a theory in the form of a series of proposed "non-traditional" forming processes and concepts that are derived through a synthesis of state-of-the-art automation with current concrete forming and placing techniques, and describes them in varying depth, in both text and graphics, on the basis of their geometric versatility and their appropriateness for the proposed task. Emphasis is given to the newly emerging and most promising Solid Freeform Fabrication processes, and within this area, to laser-curing technology. The feasibility of using computer-aided formwork design, and computer-aided formwork fabrication in today's standard building practices is evaluated for this particular technology on the basis of case-studies. Performance in the categories of process, material, product, lead time and economy is analyzed over the complete tooling cycle and is compared to the performance of existing, conventional forming systems for steel, wood, plywood veneer and glassfiber reinforced plastic; value s added to the construction process and/or to the formwork product through information technology are pointed out and become part of the evaluation. For this purpose, an analytical framework was developed for testing the performance of various Solid Freeform Fabrication processes as well as the "sensitivity," or the impact of various influencing processes and/or product parameters on lead time and economy. This tool allows us to make various suggestions for optimization as well as to formulate recommendations and guidelines for the implementation of this technology. The primary objective of this research is to offer architects and engineers unprecedented independence from planar, orthogonal building geometry, in the realization of design ideas and/or design requirements for concrete structures and/or their components. The interplay between process-oriented design and innovative implementation technology may ultimately lead to an architecture conceived on a different level of complexity, with an extended form-vocabulary and of high quality.
series	thesis:PhD
last changed	2005/09/09 12:58

_id	diss_marsh
id	diss_marsh
authors	Marsh, A.J.
year	1997
title	Performance Analysis and Conceptual Design
source	School of Architecture and Fine Arts, University of Western Australia
summary	A significant amount of the research referred to by Manning has been directed into the development of computer software for building simulation and performance analysis. A wide range of computational tools are now available and see relatively widespread use in both research and commercial applications. The focus of development in this area has long been on the accurate simulation of fundamental physical processes, such as the mechanisms of heat flow though materials, turbulent air movement and the inter-reflection of light. The adequate description of boundary conditions for such calculations usually requires a very detailed mathematical model. This has tended to produce tools with a very engineering-oriented and solution-based approach. Whilst becoming increasingly popular amongst building services engineers, there has been a relatively slow response to this technology amongst architects. There are some areas of the world, particularly the UK and Germany, where the use of such tools on larger projects is routine. However, this is almost exclusively during the latter stages of a project and usually for purposes of plant sizing or final design validation. The original conceptual work, building form and the selection of materials being the result of an aesthetic and intuitive process, sometimes based solely on precedent. There is no argument that an experienced designer is capable of producing an excellent design in this way. However, not all building designers are experienced, and even fewer have a complete understanding of the fundamental physical processes involved in building performance. These processes can be complex and often highly inter-related, often even counter-intuitive. It is the central argument of this thesis that the needs of the building designer are quite different from the needs of the building services engineer, and that existing building design and performance analysis tools poorly serve these needs. It will be argued that the extensive quantitative input requirement in such tools acts to produce a psychological separation between the act of design and the act of analysis. At the conceptual stage, building geometry is fluid and subject to constant change, with solid quantitative information relatively scarce. Having to measure off surface areas or search out the emissivity of a particular material forces the designer to think mathematically at a time when they are thinking intuitively. It is, however, at this intuitive stage that the greatest potential exists for performance efficiencies and environmental economies. The right orientation and fenestration choice can halve the airconditioning requirement. Incorporating passive solar elements and natural ventilation pathways can eliminate it altogether. The building form can even be designed to provide shading using its own fabric, without any need for additional structure or applied shading. It is significantly more difficult and costly to retrofit these features at a later stage in a project’s development. If the role of the design tool is to serve the design process, then a new approach is required to accommodate the conceptual phase. This thesis presents a number of ideas on what that approach may be, accompanied by some example software that demonstrates their implementation.
series	thesis:PhD
more	http://www.squ1.com/site.html
last changed	2003/11/28 07:33

_id	ascaad2014_003
id	ascaad2014_003
authors	Parlac, Vera
year	2014
title	Surface Dynamics: From dynamic surface to agile spaces
source	Digital Crafting [7th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2014 / ISBN 978-603-90142-5-6], Jeddah (Kingdom of Saudi Arabia), 31 March - 3 April 2014, pp. 39-48
summary	Behavior, adaptation and responsiveness are characteristics of live organisms; architecture on the other hand is structurally, materially and functionally constructed. With the shift from ‘mechanical’ towards ‘organic’ paradigm (Mae-Wan Ho, 1997) attitude towards architectural adaptation, behavior and performance is shifting as well. This change is altering a system of reference and conceptual basis for architecture by suggesting the integration of dynamics – dynamics that don’t address kinetic movement only but include flows of energies, material and information. This paper presents an ongoing research into kinetic material system with the focus on non-mechanical actuation (shape memory alloy) and the structural and material behavior. It proposes an adaptive surface capable of altering its shape and forming small occupiable spaces that respond to external and internal influences and flows of information. The adaptive structure is developed as a physical and digital prototype. Its behavior is examined at a physical level and the findings are used to digitally simulate the behavior of the larger system. The design approach is driven by an interest in adaptive systems in nature and material variability (structural and functional) of naturally constructed materials. The broader goal of the research is to test the scale at which shape memory alloy can be employed as an actuator of dynamic architectural surfaces and to speculate on and explore the capacity of active and responsive systems to produce adaptable surfaces that can form occupiable spaces and with that, added functionalities in architectural and urban environments.
series	ASCAAD
email
last changed	2016/02/15 13:09

_id	d46d
authors	Takahashi, S., Shinagawa, Y. and Kunii, T.L.
year	1997
title	A Feature-Based Approach for Smooth Surfaces
source	Proceedings of Fourth Symposium on Solid Modeling, pp. 97-110
summary	Feature-based representation has become a topic of interest in shape modeling techniques. Such feature- based techniques are, however, still restricted to polyhedral shapes, and none has been done on smooth sur- faces. This paper presents a new feature-based ap- proach for smooth surfaces. Here, the smooth surfaces are assumed to be 2-dimensional @differentiable manifolds within a theoretical framework. As the shape features, critical points such as peaks, pits, and passes are used. We also use a critical point graph called the R.eeb graph to represent the topological skeletons of a smooth object. Since the critical points have close relations with the entities of B-reps, the framework of thtx B-reps can easily be applied to our approach. In our method, the shape design process begins with specifying the topological skeletons using the Reeb graph. The Reeb graph is edited by pasting the enti- ties called cells that have one-to-one correspondences with the critical points. In addition to the topological skeletons, users also design the geometry of the objects with smooth surfaces by specifying the flow curves that run on the object surface. From these flow curves, the system automatically creates a control network that encloses the object shape. The surfaces are interpolated from the control network by minimizing the allergy function subject to the deformation of the surfaces using variational optimization.
series	other
last changed	2003/04/23 15:50

_id	0024
authors	Breen, J. and Dijk, T. van
year	1997
title	Modelling for eye level composition; design media experiments in an educational setting.
source	Architectural and Urban Simulation Techniques in Research and Education [Proceedings of the 3rd European Architectural Endoscopy Association Conference / ISBN 90-407-1669-2]
summary	In order to simulate the visual effects of designs at eye level, it is necessary to construct models from which (sequences of) images can be taken. This holds true for both Optical Endoscopy and Computer Aided Visualisation techniques. In what ways can an eye level approach stimulate spatial awareness and create insights into the workings of a design concept? Can Endoscopic methods be used effectively as a creative environment for design decision-making and teamwork and even to stimulate the generation of new design ideas? How should modelmaking be considered if it is to be of use in an ‘impatient’ design process, and how can students be made aware of the opportunities of both direct eye level observations from design models and of the more sophisticated endoscopic imaging techniques? This paper explores the theme of eye level modelling by focusing on a number of formal exercises and educational experiments carried out by the Delft Media group in recent years. An attempt is made to describe and evaluate these experiences, in order to draw conclusions and to signal possible new opportunities for eye level composition for the benefit of both design education and practice...
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	cabb
authors	Broughton, T., Tan, A. and Coates, P.S.
year	1997
title	The Use of Genetic Programming In Exploring 3D Design Worlds - A Report of Two Projects by Msc Students at CECA UEL
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 885-915
summary	Genetic algorithms are used to evolve rule systems for a generative process, in one case a shape grammar,which uses the "Dawkins Biomorph" paradigm of user driven choices to perform artificial selection, in the other a CA/Lindenmeyer system using the Hausdorff dimension of the resultant configuration to drive natural selection. (1) Using Genetic Programming in an interactive 3D shape grammar. A report of a generative system combining genetic programming (GP) and 3D shape grammars. The reasoning that backs up the basis for this work depends on the interpretation of design as search In this system, a 3D form is a computer program made up of functions (transformations) & terminals (building blocks). Each program evaluates into a structure. Hence, in this instance a program is synonymous with form. Building blocks of form are platonic solids (box, cylinder, etc.). A Variety of combinations of the simple affine transformations of translation, scaling, rotation together with Boolean operations of union, subtraction and intersection performed on the building blocks generate different configurations of 3D forms. Using to the methodology of genetic programming, an initial population of such programs are randomly generated,subjected to a test for fitness (the eyeball test). Individual programs that have passed the test are selected to be parents for reproducing the next generation of programs via the process of recombination. (2) Using a GA to evolve rule sets to achieve a goal configuration. The aim of these experiments was to build a framework in which a structure's form could be defined by a set of instructions encoded into its genetic make-up. This was achieved by combining a generative rule system commonly used to model biological growth with a genetic algorithm simulating the evolutionary process of selection to evolve an adaptive rule system capable of replicating any preselected 3D shape. The generative modelling technique used is a string rewriting Lindenmayer system the genes of the emergent structures are the production rules of the L-system, and the spatial representation of the structures uses the geometry of iso-spatial dense-packed spheres
series	CAAD Futures
email
last changed	2003/11/21 15:16

_id	b4c4
authors	Carrara, G., Fioravanti, A. and Novembri, G.
year	2000
title	A framework for an Architectural Collaborative Design
source	Promise and Reality: State of the Art versus State of Practice in Computing for the Design and Planning Process [18th eCAADe Conference Proceedings / ISBN 0-9523687-6-5] Weimar (Germany) 22-24 June 2000, pp. 57-60
doi	https://doi.org/10.52842/conf.ecaade.2000.057
summary	The building industry involves a larger number of disciplines, operators and professionals than other industrial processes. Its peculiarity is that the products (building objects) have a number of parts (building elements) that does not differ much from the number of classes into which building objects can be conceptually subdivided. Another important characteristic is that the building industry produces unique products (de Vries and van Zutphen, 1992). This is not an isolated situation but indeed one that is spreading also in other industrial fields. For example, production niches have proved successful in the automotive and computer industries (Carrara, Fioravanti, & Novembri, 1989). Building design is a complex multi-disciplinary process, which demands a high degree of co-ordination and co-operation among separate teams, each having its own specific knowledge and its own set of specific design tools. Establishing an environment for design tool integration is a prerequisite for network-based distributed work. It was attempted to solve the problem of efficient, user-friendly, and fast information exchange among operators by treating it simply as an exchange of data. But the failure of IGES, CGM, PHIGS confirms that data have different meanings and importance in different contexts. The STandard for Exchange of Product data, ISO 10303 Part 106 BCCM, relating to AEC field (Wix, 1997), seems to be too complex to be applied to professional studios. Moreover its structure is too deep and the conceptual classifications based on it do not allow multi-inheritance (Ekholm, 1996). From now on we shall adopt the BCCM semantic that defines the actor as "a functional participant in building construction"; and we shall define designer as "every member of the class formed by designers" (architects, engineers, town-planners, construction managers, etc.).
keywords	Architectural Design Process, Collaborative Design, Knowledge Engineering, Dynamic Object Oriented Programming
series	eCAADe
email
more	http://www.uni-weimar.de/ecaade/
last changed	2022/06/07 07:55

_id	d60a
authors	Casti, J.C.
year	1997
title	Would be Worlds: How simulation is changing the frontiers of science
source	John Wiley & Sons, Inc., New York.
summary	Five Golden Rules is caviar for the inquiring reader. Anyone who enjoyed solving math problems in high school will be able to follow the author's explanations, even if high school was a long time ago. There is joy here in watching the unfolding of these intricate and beautiful techniques. Casti's gift is to be able to let the nonmathematical reader share in his understanding of the beauty of a good theory.-Christian Science Monitor "[Five Golden Rules] ranges into exotic fields such as game theory (which played a role in the Cuban Missile Crisis) and topology (which explains how to turn a doughnut into a coffee cup, or vice versa). If you'd like to have fun while giving your brain a first-class workout, then check this book out."-San Francisco Examiner "Unlike many popularizations, [this book] is more than a tour d'horizon: it has the power to change the way you think. Merely knowing about the existence of some of these golden rules may spark new, interesting-maybe even revolutionary-ideas in your mind. And what more could you ask from a book?"-New Scientist "This book has meat! It is solid fare, food for thought . . . makes math less forbidding, and much more interesting."-Ben Bova, The Hartford Courant "This book turns math into beauty."-Colorado Daily "John Casti is one of the great science writers of the 1990s."-San Francisco Examiner In the ever-changing world of science, new instruments often lead to momentous discoveries that dramatically transform our understanding. Today, with the aid of a bold new instrument, scientists are embarking on a scientific revolution as profound as that inspired by Galileo's telescope. Out of the bits and bytes of computer memory, researchers are fashioning silicon surrogates of the real world-elaborate "artificial worlds"-that allow them to perform experiments that are too impractical, too costly, or, in some cases, too dangerous to do "in the flesh." From simulated tests of new drugs to models of the birth of planetary systems and galaxies to computerized petri dishes growing digital life forms, these laboratories of the future are the essential tools of a controversial new scientific method. This new method is founded not on direct observation and experiment but on the mapping of the universe from real space into cyberspace. There is a whole new science happening here-the science of simulation. The most exciting territory being mapped by artificial worlds is the exotic new frontier of "complex, adaptive systems." These systems involve living "agents" that continuously change their behavior in ways that make prediction and measurement by the old rules of science impossible-from environmental ecosystems to the system of a marketplace economy. Their exploration represents the horizon for discovery in the twenty-first century, and simulated worlds are charting the course. In Would-Be Worlds, acclaimed author John Casti takes readers on a fascinating excursion through a number of remarkable silicon microworlds and shows us how they are being used to formulate important new theories and to solve a host of practical problems. We visit Tierra, a "computerized terrarium" in which artificial life forms known as biomorphs grow and mutate, revealing new insights into natural selection and evolution. We play a game of Balance of Power, a simulation of the complex forces shaping geopolitics. And we take a drive through TRANSIMS, a model of the city of Albuquerque, New Mexico, to discover the root causes of events like traffic jams and accidents. Along the way, Casti probes the answers to a host of profound questions these "would-be worlds" raise about the new science of simulation. If we can create worlds inside our computers at will, how real can we say they are? Will they unlock the most intractable secrets of our universe? Or will they reveal instead only the laws of an alternate reality? How "real" do these models need to be? And how real can they be? The answers to these questions are likely to change the face of scientific research forever.
series	other
last changed	2003/04/23 15:14

_id	b656
authors	Chase, S.C.
year	1997
title	Logic based design modeling with shape algebras
source	Automation in Construction 6 (4) (1997) pp. 311-322
summary	A new method of describing designs by combining the paradigms of shape algebras and predicate logic representations is presented. Representing shapes and spatial relations in logic provides a natural, intuitive method of developing complete computer systems for reasoning about designs. The advantages of shape algebra formalisms over more traditional representations of geometric objects are discussed. The method employed involves the definition of a large set of high level design relations from a small set of simple structures and spatial relations. Examples in architecture and geographic information systems are illustrated.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	8030
authors	Cheng, F.
year	1997
title	Visual simulation techniques on environmental cognition systems.
source	Architectural and Urban Simulation Techniques in Research and Education [Proceedings of the 3rd European Architectural Endoscopy Association Conference / ISBN 90-407-1669-2]
summary	Findings of the simulation experiments using simple (inexpensive) simulation set-ups which were conducted by students of the fourth semester studying the course furniture design. They worked on two different examples with an emphasis on communication and orientation systems. Research findings of lightsimulation experiments at the SI with the emphasis on the miniaturization of simulation objects and optimisation of procedures.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	2342
authors	Chiu, Mao-Lin and Shih, Shen-Guan
year	1997
title	Analogical Reasoning and Case Adaptation in Architectural Design: Computers Vs. Human Designers
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 787-800
summary	This paper depicts the studies of the differences between human designers and computers in analogical reasoning and case adaptation. Four design experiments are undertaken to examine how designers conduct case-based design, apply dimensional and topological adaptation. The paper also examines the differences of case adaptation by novice and experienced designers, and between human judgement in case adaptation and the evaluation mechanism by providing similarity assessment. In conclusion, this study provides the comparative analysis from the above observation and implications on the development of case-based reasoning systems for designers.
keywords	Case-based Reasoning, Analogical Reasoning, Case Adaptation, Computer-Aided Architectural Design
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	4a30
authors	Chiu, Mao-Lin
year	1997
title	Analogical Reasoning in Architectural Design: Comparison of Human Designers and Computers in Case Adaptation
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 205-215
doi	https://doi.org/10.52842/conf.caadria.1997.205
summary	Design cases were considered as the design solution or condensed knowledge of design experience. In the analogical reasoning process, case adaptation is the fundamental task for solving the problem. This paper is aimed to study the difference between human designers and computers in case adaptation. Two design experiments are undertaken for examining how designers apply dimensional and topological adaptation, exploring the difference of case adaptation by novice and experienced designers, and examining the difference between human judgement in case adaptation and the evaluation mechanism by providing similarity assessment. In conclusion, this study provides the comparative analysis from the above observation and implications on the development of case-based reasoning systems for designers.
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	fa1d
authors	Colley, Tim
year	1997
title	Visualizing Information: Internet Guidelines for Distributing Architectural Research
source	Virginia Polytechnic Institute and State University
summary	A web site was designed and constructed for the Research + Demonstration Facility (RDF) as a masters thesis project to help educators teach future architects more interactively by using the dynamic medium of the Internet. Students and faculty will learn about evolving architectural research and technology as well as potential consequences of design decisions. Educators will be able to conduct online research, or tele-experiments, in the classroom thus allowing students to learn, in near real-time, the outcome or progress of research on and off campus. This project presents some of the possibilities of how the Internet can enhance re-search information delivery to students and faculty of architecture.
keywords	Architectural Research; Internet Guidelines; Web Site Documentation
series	thesis:MSc
email
more	http://scholar.lib.vt.edu/theses/available/etd-92397-115337/
last changed	2004/06/02 19:12

_id	47fc
authors	Costanzo, E., De Vecchi, A., Di Miceli, C. and Giacchino, V.
year	1997
title	A Software for Automatically Verifying Compatibility in Complicated Building Assemblies
source	Challenges of the Future [15th eCAADe Conference Proceedings / ISBN 0-9523687-3-0] Vienna (Austria) 17-20 September 1997
doi	https://doi.org/10.52842/conf.ecaade.1997.x.q4q
summary	The research we are carrying on is intended to develop a tool aiding to design building mechanical assembly systems, which are often characterised by high complexity levels. In fact, when designing complicated building assemblies by making use of common graphical representations, it might be impossible for the operator to choose the proper shape and installation sequence of components so that they do not interfere during the assembly, and to check, in the meantime, the most favorable setting up modalities according to execution problems. Our software, running within CAD, by starting from the definition of the node features, will allow the operator to automatically get three types of representation that can simulate the assembly according to the assigned installation sequence: - instant images of the phases for setting up each component into the node; - 3D views showing the position of each component disassembled from the node and indicating the movements required for connection; - the components moving while the node is being constructed. All the representations can be updated step by step each time modifications to the node are made. Through this digital iterative design process - that takes advantage of various simultaneous and realistic prefigurations - the shape and function compatibility between the elements during the assembling can be verified. Furthermore, the software can quickly check whether any change and integration to the node is efficacious, rising the approximation levels in the design phase. At the moment we have developed the part of the tool that simulates the assembly by moving the components into the nodes according to the installation sequence.
series	eCAADe
more	http://info.tuwien.ac.at/ecaade/proc/costanzo/costanzo.htm
last changed	2022/06/07 07:50

_id	ddss9829
id	ddss9829
authors	De Hoog, J., Hendriks, N.A. and Rutten, P.G.S.
year	1998
title	Evaluating Office Buildings with MOLCA(Model for Office Life Cycle Assessment)
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	MOLCA (Model for Office Life Cycle Assessment) is a project that aims to develop a tool that enables designers and builders to evaluate the environmental impact of their designs (of office buildings) from a environmental point of view. The model used is based on guidelinesgiven by ISO 14000, using the so-called Life Cycle Assessment (LCA) method. The MOLCA project started in 1997 and will be finished in 2001 resulting in the aforementioned tool. MOLCA is a module within broader research conducted at the Eindhoven University of Technology aiming to reduce design risks to a minimum in the early design stages.Since the MOLCA project started two major case-studies have been carried out. One into the difference in environmental load caused by using concrete and steel roof systems respectively and the role of recycling. The second study focused on biases in LCA data and how to handle them. For the simulations a computer-model named SimaPro was used, using the world-wide accepted method developed by CML (Centre for the Environment, Leiden, the Netherlands). With this model different life-cycle scenarios were studied and evaluated. Based on those two case studies and a third one into an office area, a first model has been developed.Bottle-neck in this field of study is estimating average recycling and re-use percentages of the total flow of material waste in the building sector and collecting reliable process data. Another problem within LCA studies is estimating the reliability of the input data and modelling uncertainties. All these topics will be subject of further analysis.
keywords	Life-Cycle Assessment, Office Buildings, Uncertainties in LCA
series	DDSS
last changed	2003/08/07 16:36

_id	0627
authors	Dijkstra, J. and Timmermans, H.J.P.
year	1997
title	Exploring the Possibilities of Conjoint Measurement as a Decision-Making Tool for Virtual Wayfinding Environments
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 61-71
doi	https://doi.org/10.52842/conf.caadria.1997.061
summary	Virtual reality systems may have a lot to offer in architecture and urban planning when visual and active environments may have a dramatic impact on individual preferences and choice behaviour. Conjoint analysis involves the use of designed hypothetical choice situations to measure individuals’ preferences and predict their choice in new situations. Conjoint experiments involve the design and analysis of hypothetical decision tasks. Alternatives are described by their main features, called attributes. Multiple hypothetical alternatives, called product profiles, are generated and presented to respondents, who are requested to express their degree of preference for these profiles or choose between these profiles. Conjoint experiments have become a popular tool to model individual preferences and decision-making in a variety of research areas. Most studies of conjoint analysis have involved a verbal description of product profiles, although some studies have used a pictorial presentation of production profiles. Virtual reality systems offer the potential of moving the response format beyond these traditional response modes. This paper describes a particular aspect of an ongoing research project which aims to develop a virtual reality based system for conjoint analysis. The principles underlying the system will be illustrated by a simple example of wayfinding in a virtual environment.
series	CAADRIA
last changed	2022/06/07 07:55

_id	cc90
authors	Kolarevic, Branko
year	1998
title	CAD@HKU
source	ACADIA Quarterly, vol. 17, no. 4, pp. 16-17
doi	https://doi.org/10.52842/conf.acadia.1998.016
summary	Since 1993, we have experimented with Virtual Design Studios (VDS) as an on-going research project that investigates the combination of current computer-aided design (CAD), computer networks (Internet), and computer supported collaborative work (CSCW) techniques to bring together studentsat geographically distributed locations to work in a virtual atelier. In 1993 the theme of the first joint VDS project was in-fill housing for the traditional Chinese walled village of Kat Hing Wai in the New Territories north of Hong Kong, and our partners included MIT and Harvard in Boston (USA), UBC in Vancouver (Canada), and Washington University in St. Louis (USA). In 1994 we were joined by Cornell (USA) and Escola Tecnica Superior d’Arquitectura de Barcelona (Spain) to re-design Li Long housing in Shanghai, and 1995 added the Warsaw Institute of Technology (Poland) for the ACSA/Dupont competition to design a Center for Cultural and Religious Studies in Japan. The 1996 topic was an international competition to design a monument located in Hong Kong to commemorate the return of Hong Kong to Chinese sovereignty in 1997. Communication was via e-mail, the WorldWide Web with limited attempts at VRML, and network video. Several teaching and research experiments conducted through these projects have demonstrated the viability and potential of using electronic, telecommunications, and videoconferencing technologies in collaborative design processes. Results of these VDS have been presented at conferences worldwide, explained in journal papers and published in Virtual Design Studio, edited by J. Wojtowicz, published by HKU Press.
series	ACADIA
email
last changed	2022/06/07 07:51

_id	0f97
authors	Kvan, Th., West, R. and Vera, A.
year	1997
title	Choosing Tools for a Virtual Community
source	Creative Collaboration in Virtual Communities 1997, ed. A. Cicognani. VC'97. Sydney: Key Centre of Design Computing, Department of Architectural and Design Science, University of Sydney, 20 p.
summary	This paper reports on the results of experiments carried out to identify the effects of computer-mediated communication between participants involved in a design problem. When setting up a virtual design community, choices must be made between a variety of tools, choices dictated by budget, bandwidth, ability, availability. How do you choose between the tools, which is useful and how will each affect the outcome of the design exchanges you plan? Cognitive modelling methodologies such as GOMS have been used by interface designers to capture the mechanisms of action and interaction involved in routine expert behavior. Using this technique, which breaks down an individual's behaviors into Goals, Operators, Methods, and Selection rules, it is possible to evaluate the impact of different aspects of an interface in task-specific ways. In the present study, the GOMS methodology was used to characterize the interactive behavior of knowledgeable participants as they worked on a design task under different communication-support conditions. Pairs of participants were set a design problem and asked to solve it in face-to-face settings. The same problem was then tackled by participants in settings using two different modes of computer-supported communication: email and an electronic whiteboard. Protocols were collected and analyzed in terms of the constraints of each tool relative to the task and to each other. The GOMS methodology was used as a way to represent the collaborative design process in a way that yields information on both the productivity and performance of participants in each of the three experimental conditions. It also yielded information on the component elements of the design process, the basic cognitive building-blocks of design, thereby suggesting fundamentally new tools that might be created for interaction in virtual environments. A further goal of the study was to explore the nature of task differences in relation to alternative platforms for communication. It was hypothesized that design processes involving significant negotiation would be less aided by computer support than straight forward design problems. The latter involve cooperative knowledge application by both participants and are therefore facilitated by information-rich forms of computer support. The former, on the other hand, requires conflict resolution and is inhibited by non face-to-face interaction. The results of this study point to the fact that the success of collaboration in virtual space is not just dependent on the nature of the tools but also on the specific nature of the collaborative task.
keywords	Cognitive Models, Task-analysis, GOMS
series	other
email
last changed	2003/05/15 20:50

_id	2e3b
authors	Kvan, Thomas and Kvan, Erik
year	1997
title	Is Design Really Social
source	Creative Collaboration in Virtual Communities 1997, ed. A. Cicognani. VC'97. Sydney: Key Centre of Design Computing, Department of Architectural and Design Science, University of Sydney, 8 p.
summary	There are many who will readily agree with Mitchell’s assertion that “the most interesting new directions (for computer-aided design) are suggested by the growing convergence of computation and telecommunication. This allows us to treat designing not just as a technical process... but also as a social process.” [Mitchell 1995]. The assumption is that design was a social process until users of computer-aided design systems were distracted into treating it as a merely technical process. Most readers will assume that this convergence must and will lead to increased communication between design participants; that better social interaction leads to be better design. The unspoken assumption appears to be that putting the participants into an environment with maximal communication channels will result in design collaboration. The tools provided; therefore; must permit the best communication and the best social interaction. We think it essential to examine the foundations and assumptions on which software and environments are designed to support collaborative design communication. Of particular interest to us in this paper is the assumption about the “social” nature of design. Early research in computer-assisted design collaborations has jumped immediately into conclusions about communicative models which lead to high-bandwidth video connections as the preferred channel of collaboration. The unstated assumption is that computer-supported design environments are not adequate until they replicate in full the sensation of being physically present in the same space as the other participants (you are not there until you are really there). It is assumed that the real social process of design must include all the signals used to establish and facilitate face-to-face communication; including gestures; body language and all outputs of drawing (e.g. Tang [1991]). In our specification of systems for virtual design communities; are we about to fall into the same traps as drafting systems did?
keywords	CSCW; Virtual Community; Architectural Design; Computer-Aided Design
series	other
email
last changed	2002/11/15 18:29

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