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	2004_630
id	2004_630
authors	Naai-Jung Shih, Chen-Yan Lin, and Chai-Yuan Liau
year	2004
title	A 3D Information System for the Digital Preservation of Historical Architecture
doi	https://doi.org/10.52842/conf.ecaade.2004.630
source	Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 630-637
summary	The purpose of this study is to build 3D models for the digital preservation of Chinese architecture. A historical architecture, the main hall of the Pao-An Temple, was scanned with a long-range 3D laser scanner. This temple is 19.68 meters wide, 18.2 meters wide, and 15.7 meters high. In total, the exterior and interior were registered into 1958 scans in order to cover the main hall. Scanned point clouds were converted into 3D computer models, sections, and boundary projections. Digital models were used as references for chronological records and comparison. Scanned components included the roof ridge, wood structure, dragon column, and a hanging flower. This research, which was sponsored by the National Science Council, created a two-way construction process, integrated geometric and image data, and established a digital reservation work process. Web pages were made to display 3D color components by using a plug-in to enable browsing of large files.
keywords	3D Laser Scanner; Historical Preservation
series	eCAADe
email
last changed	2022/06/07 07:59

_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	acadia04_000
id	acadia04_000
authors	Beesley, P., Cheng, N.Y.-W. and Williamson, R.S. (eds.)
year	2004
title	FABRICATION: EXAMINING THE DIGITAL PRACTICE OF ARCHITECTURE
doi	https://doi.org/10.52842/conf.acadia.2004
source	Proceedings of the 23rd Annual Conference of the Association for Computer Aided Design in Architecture and the 2004 Conference of the AIA Technology in Architectural Practice Knowledge Community / ISBN 09696665-2-7] Cambridge (Ontario) 8-14 November, 2004.
summary	We are presenting design ideas, technical innovation, and fabrication expertise that address crucial issues. Authors investigate how to effectively design and practice architecture with automated prototyping and manufacturing. We want to understand where this might lead, and how it might change the nature of architecture itself. We are just beginning to discover the opportunities to be found in integrating automated fabrication within the practice of architecture. At the same time, the new century has brought very mixed perspectives on confident Modern progress. A cautious scrutiny of 'innovation' is needed. Fabrication is an old word with the straightforward meaning, to make. The roots of the word lead to the origins of architecture. Making has been considered a virtue by ancient writers and modern politicians alike. Fabrication (and homo faber, 'one who makes') have served as fundamental terms that constitutions and contract laws have been built upon. Shaping and working with materials is at the core of Western civilization. However at a point in human history where nature is steadily being replaced by human artifice, the consequences of making are far from simple. Whether for good or ill, our new fabricated environment is transforming the world.
series	ACADIA
type	normal paper
last changed	2022/06/07 07:49

_id	cf2011_p157
id	cf2011_p157
authors	Boton, Conrad; Kubicki Sylvain, Halin Gilles
year	2011
title	Understanding Pre-Construction Simulation Activities to Adapt Visualization in 4D CAD Collaborative Tools
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 477-492.
summary	Increasing productivity and efficiency is an important issue in the AEC field. This area is mainly characterized by fragmentation, heterogeneous teams with low lifetimes and many uncertainties. 4D CAD is one of the greatest innovations in recent years. It consists in linking a 3D model of the building with the works planning in order to simulate the construction evolution over time. 4D CAD can fill several needs from design to project management through constructivity analysis and tasks planning (Tommelein 2003). The literature shows that several applications have been proposed to improve the 4D CAD use (Chau et al. 2004; Lu et al. 2007; Seok & al. 2009). In addition, studies have shown the real impact of 4D CAD use in construction projects (Staub-French & Khanzode 2007; Dawood & Sika 2007). More recently, Mahalingam et al. (2010) showed that the collaborative use of 4D CAD is particularly useful during the pre-construction phase for comparing the constructability of working methods, for visually identifying conflicts and clashes (overlaps), and as visual tool for practitioners to discuss and to plan project progress. So the advantage of the 4D CAD collaborative use is demonstrated. Moreover, several studies have been conducted both in the scientific community and in the industrial world to improve it (Zhou et al. 2009; Kang et al. 2007). But an important need that remains in collaborative 4D CAD use in construction projects is about the adaptation of visualization to the users business needs. Indeed, construction projects have very specific characteristics (fragmentation, variable team, different roles from one project to another). Moreover, in the AEC field several visualization techniques can represent the same concept and actors choose one or another of these techniques according to their specific needs related to the task they have to perform. For example, the tasks planning may be represented by a Gantt chart or by a PERT network and the building elements can be depicted with a 3D model or a 2D plan. The classical view (3D + Gantt) proposed to all practitioners in the available 4D tools seems therefore not suiting the needs of all. So, our research is based on the hypothesis that adapting the visualization to individual business needs could significantly improve the collaboration. This work relies on previous ones and aim to develop a method 1) to choose the best suited views for performed tasks and 2) to compose adapted multiple views for each actor, that we call ‚Äúbusiness views‚Äù. We propose a 4 steps-method to compose business views. The first step identifies the users‚Äô business needs, defining the individual practices performed by each actor, identifying his business tasks and his information needs. The second step identifies the visualization needs related to the identified business needs. For this purpose, the user‚Äôs interactions and visualization tasks are described. This enables choosing the most appropriate visualization techniques for each need (step 3). At this step, it is important to describe the visualization techniques and to be able to compare them. Therefore, we proposed a business view metamodel. The final step (step 4) selects the adapted views, defines the coordination mechanisms and the interaction principles in order to compose coordinated visualizations. A final step consists in a validation work to ensure that the composed views really match to the described business needs. This paper presents the latest version of the method and especially presents our latest works about its first and second steps. These include making more generic the business tasks description in order to be applicable within most of construction projects and enabling to make correspondence with visualization tasks.
keywords	Pre-construction, Simulation, 4D CAD, Collaboration, Computer Supported Cooperative Work, Human-Computer Interface, Information visualization, Business view, Model driven engineering
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	2004_050
id	2004_050
authors	Chiu, Mao-Lin
year	2004
title	Curious Agents in Virtual Exhibitive Environments Simulative Human-Computer Interaction
doi	https://doi.org/10.52842/conf.ecaade.2004.050
source	Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 50-57
summary	The creation of virtual environments is becoming the alternative for spatial design, while what can be expanded from the real environment is often questioned. This paper proposes the agent interface based on curiosity to create human computer interaction in virtual exhibitive environments. From a social and behavioral point of view, this research explores the use of places as metaphors and simulative human-computer interactions in virtual environments by reactive agents and proactive curious agents based on situation detection. The process is demonstrated by a museum exhibition project. Both the physical and the virtual environment are built, and studied the human behaviors and experiences from their presence at both environments. Agent interfaces are adopted in the virtual environment to enhance people-to-people and people-to-place interactions. The development process, the observation, the interface agent, and discussion based on the findings are presented.
keywords	Virtual Environment; Digital Design; Agent; Curiosity; Interfaces
series	eCAADe
email
last changed	2022/06/07 07:56

_id	2004_174
id	2004_174
authors	Duarte, José P., Caldas, Luisa G. and Rocha, João
year	2004
title	Free-form Ceramics - Design and Production of Complex Architectural Forms with Ceramic Elements
doi	https://doi.org/10.52842/conf.ecaade.2004.174
source	Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 174-183
summary	This paper describes a studio experiment developed with the aim of exploring the design and fabrication of complex architectural forms using ceramic elements. History has examples of double-sided curved forms built in ceramics. Such examples would not fulfill contemporary functional and aesthetic principles, neither would they be feasible or cost-effective considering current construction standards. There are recent examples of such forms built in other materials. These examples are difficult to emulate when ceramics is concerned, as they imply the fabrication of unique parts and sophisticated assembly techniques. Creating a double-curved surface in ceramics thus seems a difficult task. There are, however, advantages to such a formulation of design problems. They prompt the questioning of traditional wisdom, the rejection of accepted types, and the raising of interesting questions. What are the design strategies that should be followed when creating ceramic free-forms? What is the design media required to design them? And what are the techniques needed to fabricate and construct them? These are the questions investigated in the design project pursued jointly by students at an American and a Portuguese school, in collaboration with a professional research center and a ceramics factory. The students tested various possibilities, and in the process learned about state-of-art design and production techniques. The final projects are very expressive of their investigations and include a twisted glass tunnel, large-scale ceramic ‘bubbles,’ a rotated-tile wall, and a load-bearing wall system.
keywords	Design Education: Rapid Prototyping; Remote Collaboration; Ceramics; Innovation; Free-Form Architecture
series	eCAADe
email
last changed	2022/06/07 07:55

_id	sigradi2004_162
id	sigradi2004_162
authors	Isabel Amalia Medero Rocha
year	2004
title	A concepção arquitetônica em ambiente computacional, a ferramenta como fator interveniente durante a geração de idéias Paavi-projeto de arquitetura em ambientes virtuais interativos [The Conception of Architecture in a Computational Environment - The Tool as an Intervening Factor during the Generation of Ideas (Paavi- Architectural Project in Interactive Virtual Environments)]
source	SIGraDi 2004 - [Proceedings of the 8th Iberoamerican Congress of Digital Graphics] Porte Alegre - Brasil 10-12 november 2004
summary	This study presents the results obtained as of the teaching of architectural project at a digital workshop using the WEB environment and its graphic and textual interaction tools. Sketches and external and internal 3D modeling of the architectural object formed the corpus of this investigation. The architectural concept phase (generation of ideas) was given pedagogical emphasis, based on a core concept established by conceptual images and to which space, software and formal construction elements are subordinated. The computational tool was seen to become one of the agents in the idea generation process by assisting in the arrangement of the designer.s initial ideas and by establishing project procedures that use computer-based operations. These project procedures reconstruct the object perceived as architectural concept. The central notion in the architectural proposition is the decisive element in the choice and use of the graphic software in the design process, considering its different steps.
series	SIGRADI
email
last changed	2016/03/10 09:53

_id	caadria2004_k-1
id	caadria2004_k-1
authors	Kalay, Yehuda E.
year	2004
title	CONTEXTUALIZATION AND EMBODIMENT IN CYBERSPACE
doi	https://doi.org/10.52842/conf.caadria.2004.005
source	CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 5-14
summary	The introduction of VRML (Virtual Reality Markup Language) in 1994, and other similar web-enabled dynamic modeling software (such as SGI’s Open Inventor and WebSpace), have created a rush to develop on-line 3D virtual environments, with purposes ranging from art, to entertainment, to shopping, to culture and education. Some developers took their cues from the science fiction literature of Gibson (1984), Stephenson (1992), and others. Many were web-extensions to single-player video games. But most were created as a direct extension to our new-found ability to digitally model 3D spaces and to endow them with interactive control and pseudo-inhabitation. Surprisingly, this technologically-driven stampede paid little attention to the core principles of place-making and presence, derived from architecture and cognitive science, respectively: two principles that could and should inform the essence of the virtual place experience and help steer its development. Why are the principles of place-making and presence important for the development of virtual environments? Why not simply be content with our ability to create realistically-looking 3D worlds that we can visit remotely? What could we possibly learn about making these worlds better, had we understood the essence of place and presence? To answer these questions we cannot look at place-making (both physical and virtual) from a 3D space-making point of view alone, because places are not an end unto themselves. Rather, places must be considered a locus of contextualization and embodiment that ground human activities and give them meaning. In doing so, places acquire a meaning of their own, which facilitates, improves, and enriches many aspects of our lives. They provide us with a means to interpret the activities of others and to direct our own actions. Such meaning is comprised of the social and cultural conceptions and behaviors imprinted on the environment by the presence and activities of its inhabitants, who in turn, ‘read’ by them through their own corporeal embodiment of the same environment. This transactional relationship between the physical aspects of an environment, its social/cultural context, and our own embodiment of it, combine to create what is known as a sense of place: the psychological, physical, social, and cultural framework that helps us interpret the world around us, and directs our own behavior in it. In turn, it is our own (as well as others’) presence in that environment that gives it meaning, and shapes its social/cultural character. By understanding the essence of place-ness in general, and in cyberspace in particular, we can create virtual places that can better support Internet-based activities, and make them equal to, in some cases even better than their physical counterparts. One of the activities that stands to benefit most from understanding the concept of cyber-places is learning—an interpersonal activity that requires the co-presence of others (a teacher and/or fellow learners), who can point out the difference between what matters and what does not, and produce an emotional involvement that helps students learn. Thus, while many administrators and educators rush to develop webbased remote learning sites, to leverage the economic advantages of one-tomany learning modalities, these sites deprive learners of the contextualization and embodiment inherent in brick-and-mortar learning institutions, and which are needed to support the activity of learning. Can these qualities be achieved in virtual learning environments? If so, how? These are some of the questions this talk will try to answer by presenting a virtual place-making methodology and its experimental implementation, intended to create a sense of place through contextualization and embodiment in virtual learning environments.
series	CAADRIA
type	normal paper
last changed	2022/06/07 07:52

_id	eaea2003_0
id	eaea2003_0
authors	Kardos, P. and Urland, U. (Eds.)
year	2004
title	SPATIAL SIMULATION AND EVALUATION - NEW TOOLS IN ARCHITECTURAL AND URBAN DESIGN
source	Proceedings of the 6th European Architectural Endoscopy Association Conference / ISBN 80-227-2088-7, 144 p.
summary	The 5th eaea Conference in Essen yielded four principal findings: • After having been limited to endoscopic picture and film renderings of analog scaled models, the european architectural endoscopy association (eaea) first bridged the gap to digital environmental simulations at this conference. It is not about a better or correct method, but a suitable method of representing the planned reality of a particular project using ways that make sense. The combination of digital and analog simulation media is a source of impetus to the user of both methods. The future belongs to the casespecific application and the numerous integration possibilities of the two different media. • In investigating the perception of pictures produced in both analog and digital form, it was ascertained that it was only after greater effort that the same level of pleasing qualities were achieved in the digital world, compared to pictures of analog scaled models. It seems that for many planning phases model-based pictures are superior to digital photos – with regards to economy, quality of representation and imaginative attributes. This last point seems to be especially important in the draft planning stages: the less sharp a picture is, the more remaining room for viewer interpretation there is. In particular, the high degree of precision characteristic of digital simulations no longer allows room for imagination in the individual viewer. • 3D environmental simulations will increasingly be incorporated with success in architecture and urban design courses at universities and colleges both here in Germany as well as abroad. The further spread of these techniques to other universities and colleges is desirable. Over and above application as a pedagogic tool, the use of these simulations by architects and city planners, private planning agencies and municipal planning administrators will also be in evidence in the future – for checking designs, for informing the involved parties, for establishing the decisions of government bodies, for marketing the project. • Also, the interactive use of endoscopic simulation facilities continually opens new fields of research – whether it be for registering subjective distance perception, whether it be for determining orientation possibilities in open spaces.
series	EAEA
type	normal paper
email
more	http://info.tuwien.ac.at/eaea
last changed	2005/09/09 10:43

_id	3b25
id	3b25
authors	Kepczynska-Walczak, Anetta
year	2004
title	A model proposal for digitisation and recording data on architectural heritage in Poland based on European guidelines and best practices.
source	University of Strathclyde, Dept. of Architecture and Building Science, Glasgow UK
summary	The aim of the research is an adoption of digital technology in the recording and management of architectural heritage of Poland. The current documentation practice does not fit to the present needs. The existing system of built heritage recording and protection in Poland was developed during the 1960s and the 1970s. It is based on a database of paper fiches. Although the documenting template allows the collection of comprehensive information on historic buildings, the whole system of heritage protection remains petrified. The database verification and upgrade is usually delayed, and moreover, the records do not include some information crucial for successful protection and regeneration of historical buildings. The lack of computer aided documentation system causes, furthermore, inadequate management of the heritage. Central to the research methodology is the belief that a computer aided documentation system for built heritage in Poland should be compatible and harmonised with similar European projects as a response to the needs of the emerging Information Society. To achieve that standards and best practices in Europe were identified, analysed and compared with the current Polish system of heritage protection and management. Activities of Scottish organisations from the cultural heritage sector, being in the forefront of European achievements, were studied in detail. It was observed that Scottish advancements might be a source of valuable lessons and guidelines for similar activities in Poland. The issues crucial to designing a framework model for digitisation and recording data on architectural heritage in Poland were given particular attention. These included aspects related to content, technology, legislation, and project organisation. As a result a number of recommendations were formulated and supported with necessary tables and diagrams. This specification is intended as a starting point for implementation of digital technology in recording and management of architectural heritage of Poland. It is believed that the research outcomes may become useful not only for the architectural heritage documentation and management, but also in the wider cultural heritage sector in Poland. The thesis concludes with a statement that the validity of any guidelines related to the digital technology has a limited lifespan, and therefore the proposed model for digitisation and recording data on architectural heritage in Poland, to be successful, requires constant, diligent review of the technology development.
keywords	ICT, architectural heritage, database systems
series	thesis:PhD
type	normal paper
email
last changed	2006/10/31 12:32

_id	ddss2004_d-157
id	ddss2004_d-157
authors	Krafta, R.
year	2004
title	Space is the Machine, with a Ghost Inside
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) Developments in Design & Decision Support Systems in Architecture and Urban Planning, Eindhoven: Eindhoven University of Technology, ISBN 90-6814-155-4, p. 157-173
summary	The purpose of this paper is to report efforts towards the construction of a model for urban spatial dynamics simulation, based on multi-agents and space. The underlying idea is to have urban space producers and consumers operating in a two-layer, two-circuit model. The first layer holds urban space and its successive transformations; a second layer contains agents related to space; the first circuit simulates space production, and a second one simulates space consumption. Relationship between layers is represented as objective spatial features that agents are submitted to (the machine) and subjective meanings agents attach to each spatial feature (the ghost). While space works always in the same way, meanings vary according to each agent’s background and context. Relationships between circuits are represented by means of a market game in which producers try to maximize their profits by gambling with their risks, whereas consumers try to foresee the spatial distribution of local externalities that maximizes their utilities and investments. Urban Spatial Features are captured through centrality and land use patterns; every single agent’s action leads to changes in both patterns. Producers’ profit is a function of built form location. Consumers’ local externalities are concerned basically with present and future services. The model iteration is twofold: first it generates and allocates a number of built forms within a previously determined spatial system (a cellular matrix, for example), and second it allocates users to built forms. Population of users have its social profile and growth rate externally determined. Built form allocation is decided on the basis of a combination of profitXrisk perspectives. Users’ locational choice is supported by accessibility to services and present/future neighbourhood profile. Built form allocation works as parameter for users’ locational assessment, whereas users’ choices are used as parameters for developers. The model tends to adjust itself, in terms of quantities and types of built forms to be erected, although through a market lag of some iterations. Allocations are always made through weighted draws, so that mutations (non deterministic allocations) do occur.
keywords	Urban Morphology, Urban Growth, Simulation
series	DDSS
last changed	2004/07/03 22:13

_id	2004_380
id	2004_380
authors	Lentz, Uffe and Lykke-Olsen, Andreas
year	2004
title	Quality Control in Visualization Processes
doi	https://doi.org/10.52842/conf.ecaade.2004.380
source	Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 380-386
summary	Computer visualizations of planned built environment and infrastructures are increasingly used as a basis for democratic decisions when the impact of the projects is of wide-ranging interests and influence. It is of great importance for the democratic process that all aspects of the material in a project can be trusted as a basis for discussion and decisions among politicians and citizens. This paper describes the objective aspects of the quality of data in the information basis for 3D visualizations and it calculates the precision that can be achieved by the known methods of 3D-CAD visualization. Furthermore, the paper suggests a model that can secure sufficient quality in future visualization work processes by accumulating documentation for both the factual basic data and information that carry the aim and meaning of the message and make this information accessible through the visualization.
keywords	3Dvisualization, Process Model, Quality Control
series	eCAADe
last changed	2022/06/07 07:52

_id	acadia04_100
id	acadia04_100
authors	Liapi, Katherine
year	2004
title	A computer Based System for the Design and Fabrication of Tensegrity Structures
doi	https://doi.org/10.52842/conf.acadia.2004.100
source	Fabrication: Examining the Digital Practice of Architecture [Proceedings of the 23rd Annual Conference of the Association for Computer Aided Design in Architecture and the 2004 Conference of the AIA Technology in Architectural Practice Knowledge Community / ISBN 0-9696665-2-7] Cambridge (Ontario) 8-14 November, 2004, 100-109
summary	Tensegrity structures are composed of tension compression components, where the compression components (bars) are discontinuously enclosed within continuous tensile components (cables). From an engineering point of view, a tensegrity structure is characterized by geometric non-linearity and large displacements under loading. Therefore, its prestressed shape and deformation under loading are the result of the combined effect of the geometric parameters that determine the initial configuration of the structure, the level of prestress applied to cables, and the material properties of the component members of the structure. A method for generating the initial geometric configuration of tensegrity structures composed of tensegrity units and a parametric expression of this geometry have already been developed. A novel technology that makes possible the construction of tensegrity structures from the on-site assembly of deployable tensegrity units, which are furnished with a simple mechanism that permits bar-elongation, and, as a result, an increase of the prestress applied to the cables of each unit, is also under development. Also under development is a static analysis method that takes into account the above method for prestressing cables. This paper discusses the features of a system that supports the combined geometric and structural design of tensegrity structures, and integrates a graphical interface to display: a) models of initial geometry, b) geometry of the structure after prestress and loading are applied, and c) magnitude of forces applied to the structure’s component members (bars and cables). The system also provides numerical data to be used in component fabrication, and is therefore expected to become a very valuable tool for the design and construction of tensegrity structures.
series	ACADIA
last changed	2022/06/07 07:59

_id	2004_238
id	2004_238
authors	Mohammad Arefeen Ibrahim, M. Saleh Uddin, So-Yeon Yoon
year	2004
title	Mass and Wall: The Representation of Ongoing Change in Relationship
doi	https://doi.org/10.52842/conf.ecaade.2004.238
source	Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 238-247
summary	Architecture in reality is perceived mainly through the display of space enclosures of different degrees, ranging from complete enclosure to openness. These degrees of enclosure are characterized either by subtle or often exuberant display of interplay between solids and voids. Mass and wall are the key features that play an important role in the formation of any specific relationship that develops between solids and voids. The level of relationship between wall and mass therefore is critical in shaping the overall appearance of the work. As we look back in time, walls were simply used as means of enclosing the space that was to hold specific functions. Here the obvious priority is assigned to the space and the walls are simply enslaved in order of hierarchy. But, as the history of the built environment progressed with time, this pattern of relationship was challenged and being experimented by various architects. The experiments ranged from subtle variations in the thickness of wall with regard to the associated mass, or by emphasizing its existence by the use of varying height, color, texture, etc., or even by separating it from the mass that was believed to be the mother form in earlier days. Instead of being secondary to the space it enclosed, walls started taking the primary role in terms of announcing its existence. This of course is not the only path taken by architects. As always, design concept and approaches vary from one person to the other and so does the ultimate result. This change in the pattern of relationship plays a major role in developing the formal language of contemporary architecture which needs to be acknowledged. The aim of this paper is to identify the distinct deviations in the pattern of relationship between mass and wall by depicting some of the significant works of 20th century. The role of 3D computer modeling and various animation techniques to illustrate these analytical ideas is a highlight of the presentation.
keywords	Mass And Wall, 3D Computer Modeling, Animation, Representation
series	eCAADe
last changed	2022/06/07 07:58

_id	515caadria2004
id	515caadria2004
authors	Naai-Jung Shih, Chin-Hui Su
year	2004
title	Manipulation of an Automatic Guided Vehicle with 3D Software and Remote Control
doi	https://doi.org/10.52842/conf.caadria.2004.927
source	CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 927-936
summary	The purpose of this research is to build a simulating operation system of automatic guided vehicles (AGV) at a construction site, which including (1) construction path planning system (2) real-time vision information, and (3) simulation system of automatic guided vehicles at the construction site. This paper proposes an efficient method that provides VR-based AGV path guidance with Caligari Truspace 3D software and Python Script. We designed an interactive vision information interface by using LEGO Mindstorms Vision Command combined with Visual Basic ActiveX; and also built an automatic guided vehicle with the functions of obstacle avoidance by LEGO Robotics Invention System. The majority of this research is to develop an effective construction site management model, and develop a construction path planning and a real-time system.
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	acadia16_140
id	acadia16_140
authors	Nejur, Andrei; Steinfeld, Kyle
year	2016
title	Ivy: Bringing a Weighted-Mesh Representations to Bear on Generative Architectural Design Applications
doi	https://doi.org/10.52842/conf.acadia.2016.140
source	ACADIA // 2016: POSTHUMAN FRONTIERS: Data, Designers, and Cognitive Machines [Proceedings of the 36th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-77095-5] Ann Arbor 27-29 October, 2016, pp. 140-151
summary	Mesh segmentation has become an important and well-researched topic in computational geometry in recent years (Agathos et al. 2008). As a result, a number of new approaches have been developed that have led to innovations in a diverse set of problems in computer graphics (CG) (Sharmir 2008). Specifically, a range of effective methods for the division of a mesh have recently been proposed, including by K-means (Shlafman et al. 2002), graph cuts (Golovinskiy and Funkhouser 2008; Katz and Tal 2003), hierarchical clustering (Garland et al. 2001; Gelfand and Guibas 2004; Golovinskiy and Funkhouser 2008), primitive fitting (Athene et al. 2004), random walks (Lai et al.), core extraction (Katz et al.) tubular multi-scale analysis (Mortara et al. 2004), spectral clustering (Liu and Zhang 2004), and critical point analysis (Lin et al. 20070, all of which depend upon a weighted graph representation, typically the dual of a given mesh (Sharmir 2008). While these approaches have been proven effective within the narrowly defined domains of application for which they have been developed (Chen 2009), they have not been brought to bear on wider classes of problems in fields outside of CG, specifically on problems relevant to generative architectural design. Given the widespread use of meshes and the utility of segmentation in GAD, by surveying the relevant and recently matured approaches to mesh segmentation in CG that share a common representation of the mesh dual, this paper identifies and takes steps to address a heretofore unrealized transfer of technology that would resolve a missed opportunity for both subject areas. Meshes are often employed by architectural designers for purposes that are distinct from and present a unique set of requirements in relation to similar applications that have enjoyed more focused study in computer science. This paper presents a survey of similar applications, including thin-sheet fabrication (Mitani and Suzuki 2004), rendering optimization (Garland et al. 2001), 3D mesh compression (Taubin et al. 1998), morphin (Shapira et al. 2008) and mesh simplification (Kalvin and Taylor 1996), and distinguish the requirements of these applications from those presented by GAD, including non-refinement in advance of the constraining of mesh geometry to planar-quad faces, and the ability to address a diversity of mesh features that may or may not be preserved. Following this survey of existing approaches and unmet needs, the authors assert that if a generalized framework for working with graph representations of meshes is developed, allowing for the interactive adjustment of edge weights, then the recent developments in mesh segmentation may be better brought to bear on GAD problems. This paper presents work toward the development of just such a framework, implemented as a plug-in for the visual programming environment Grasshopper.
keywords	tool-building, design simulation, fabrication, computation, megalith
series	ACADIA
type	paper
email
last changed	2022/06/07 07:58

_id	ddss2004_ra-193
id	ddss2004_ra-193
authors	Ohgai, A., Y. Gohnai, S. Ikaruga, M. Murakami, and K. Watanabe
year	2004
title	Japan Cellular Automata Modeling for Fire Spreading as a Tool to Aid CommunityBased Planning for Disaster Mitigation
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) Recent Advances in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Kluwer Academic Publishers, ISBN: 1-4020-2408-8, p. 193-209
summary	As a tool to support collaboration in community-based planning for disaster mitigation in Japanese old wooden built-up areas, we attempt to develop a fire spreading simulation model incorporated a fire fighting activity using Cellular Automata (CA). The proposed model can deal with the process of fire spreading in a building that traditional models can not represent. Whether or not fire can spread is based on a stochastic calculation process to reproduce uncertain fire spreading. The errors caused by the stochastic factor are analyzed by carrying out simulation two or more times under the same condition. Moreover, the reproductivity of the model is examined by comparing simulation results with actual fire records.
keywords	Community-Based Planning for Disaster Mitigation, Fire Spreading, Fire Fighting Activity, Cellular Automata Modeling, Planning Support Tool
series	DDSS
last changed	2004/07/03 22:13

_id	ddss2004_ra-325
id	ddss2004_ra-325
authors	Rodrigues, D.S., L.C.L. Souza, and J.F.G. Mendes
year	2004
title	Enhancing 3DSkyView Extension Performance
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) Recent Advances in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Kluwer Academic Publishers, ISBN: 1-4020-24088, p. 325-340
summary	This paper presents a second version of the 3DSkyView extension. The purpose of that extension was to implement a calculation algorithm for assessment and visualization of sky view factors (SVF) by means of tools available in a Geographical Information System (GIS). The sky view factor is a thermal and geometric parameter pointed out in the specialized literature as one of the main causes of urban heat islands. A 3D-GIS is a powerful tool for reaching the goal of this research because it allows the storage, treatment and analysis of tri-dimensional urban data, in addition to a high level of flexibility for incorporating calculation algorithms. The objective in the 3DSkyView extension is to optimize the determination of that factor, not only reducing its demanding calculation and graphical representation time, but also generating a simplified tool for replacing expensive photographic equipment usually applied on this matter. Enhancing functions of ArcView GIS 3.2, the first version of that extension showed a very good performance allowing the automatic delineation and determination of SVF. That performance was although limited to a single observer point. The simulation of SVF for several view points in urban canyons was only possible by applying the extension as many times as the number of observers considered. Therefore, this second version was now developed in order to allow simultaneous determination of SVF for many view points. In addition, the 3DSkyView new interface is more flexible, in a way that the user may choose the kind of output wanted (graphical and/or tabular). With this new feature it is then easier to create a continuous SVF map for an entire area.
keywords	Sky View Factor, Urban Geometry, GIS Extension, Urban Heat Island
series	DDSS
last changed	2004/07/03 22:13

_id	2004_128
id	2004_128
authors	Shih, Naai-Jung and Su, Chin-Hui
year	2004
title	Combine 3D Software and Remote Control to Progress Operating Simulation of Automatic Guided Vehicles
doi	https://doi.org/10.52842/conf.ecaade.2004.128
source	Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 128-134
summary	The purpose of this research is to build a simulating operation system of automatic guided vehicles (AGV) at a construction site, which including (1) construction path planning system (2) real-time vision information, and (3) simulation system of automatic guided vehicles at the construction site. This paper proposes an ef- ficient method that provides VR-based AGV path guidance with Caligari Truspace 3D software and Python Script. We designed an interactive vision information interface by using LEGO Mindstorms Vision Command combined with Visual Basic ActiveX; and also built an automatic guided vehicle with the functions of obstacle avoidance by LEGO Robotics Invention System. The majority of this research is to develop an effective construction site management model, and develop a construction path planning and a real-time system.
keywords	Automatic Guided Vehicles, LEGO Mindstorms, Path Planning, Virtual Reality, Vision Information
series	eCAADe
last changed	2022/06/07 07:56

_id	2004_573
id	2004_573
authors	Shih, Naai-Jung and Wang, Pin-Hung
year	2004
title	Using Point Cloud to Inspect the Construction Quality of Wall Finish
doi	https://doi.org/10.52842/conf.ecaade.2004.573
source	Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 573-578
summary	This research used a 3D scanner to scan mortar finish of a wall during building construction, via recorded 3D point cloud information to inspect the wall’s smoothness. The scanner was considered as an objective science instrument to inspect the quality of the finish job in order to assure better construction quality.
keywords	3D Scanner, Point Cloud, Wall Finish
series	eCAADe
email
last changed	2022/06/07 07:59

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