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 8e43
authors Katz, R., Chang, E. and Bhateja, R.
year 1986
title Version Modeling concepts for Computer-Aided Design Databases
source ACM SIGMOD Intl. Conf On Management of Data
summary We describe a semantic object-oriented data model for representing how a complex design database evolves over time. Structural relationships, introduced by the data management system, are imposed on the objects created by existing CAD tools. The relationships supported by the model are (1) version histories, (2) time-varying configurations, and (3) equivalences among objects of different types. We describe mechanisms for (1) identifying current versions, (2) supporting dynamic configuration binding, and (3) verifying equivalence relationships. The data model is being implemented in a Version Server, under development at the University of California, Berkeley.
series other
last changed 2003/04/23 15:14

_id sigradi2012_153
id sigradi2012_153
authors Kaufmann, Stefan; Petzold, Frank
year 2012
title Cybernetic models in building fabrication. A three stage training approach to digital fabrication in architecture
source SIGraDi 2012 [Proceedings of the 16th Iberoamerican Congress of Digital Graphics] Brasil - Fortaleza 13-16 November 2012, pp. 243-245
summary In the time since European architects first began using computers in the building design process, the digital revolution has transformed how architects use planning tools completely. Today, digital tools are an indispensable part of planning practice. Besides a wide variety of digital modeling tools, parametric tools offer architects diverse options for generating cybernetic building models as BIM-models or homeostatic parametric geometry models. Cybernetic models help us to describe the buildings as a system and can improve planning efficiency. The aim of planning is to construct or fabricate an end result. The integration of digital fabrication methods in the digital chain is a fundamental goal if architects are to benefit from the progressive development of computer controlled machine tools. Fabrication integrated digital models can automate the planning process up to the production stage and enable the efficient fabrication of building components. The increased efficiency of planning and fabrication has facilitated a growing proliferation of buildings of increasing geometric complexity. Computers can open a door to the realization of new forms, spaces and construction systems to architects that understand the principles of fabrication-integrated cybernetic modeling.
keywords didactic; parametric design; digital fabrication; CIM;
series SIGRADI
email
last changed 2016/03/10 09:53

_id sigradi2010_30
id sigradi2010_30
authors Kaufmann, Stefan; Schubert Gerhard; Petzold Frank
year 2010
title Escaping the Model’s Scale
source SIGraDi 2010_Proceedings of the 14th Congress of the Iberoamerican Society of Digital Graphics, pp. Bogotá, Colombia, November 17-19, 2010, pp. 30-34
summary Over the last five years, the use of computer - controlled machinery in the building process has expanded immensely. With the help of parametric software, it has become possible not only to manage ever more complex structures but also to realize them using digital fabrication processes. These increased possibilities in turn place new demands on architectural teaching and its underlying didactic concepts. Taking the “WAVE 0.18” project as an example, this paper demonstrates the possibilities as well as the challenges of new didactic concepts and their practical application at the Chair for Architectural Informatics at the TU Munich.
keywords didactics, parametric design, digital fabrication, CAM, Scale 1:1.
series SIGRADI
email
last changed 2016/03/10 09:53

_id ecaade2015_194
id ecaade2015_194
authors Kaushik, Vignesh and Janssen, Patrick
year 2015
title Urban Windflow:Investigating the use of animation software for simulating windflow around buildings
doi https://doi.org/10.52842/conf.ecaade.2015.1.225
source Martens, B, Wurzer, G, Grasl T, Lorenz, WE and Schaffranek, R (eds.), Real Time - Proceedings of the 33rd eCAADe Conference - Volume 1, Vienna University of Technology, Vienna, Austria, 16-18 September 2015, pp. 225-234
summary The animation and visual effects industry is producing advanced software capable of generating realistic behaviours faster than ever by using algorithms that approximate the physics of the real world. There is an opportunity to utilize these software to support performance-based conceptual design for complex simulations such as Computational Fluid Dynamics (CFD). This paper investigates a method of performing windflow simulation using an animation software that implements an Eulerian based smoke solver. These simulations run orders of magnitude faster than the similar simulations in dedicated high-end CFD applications. The paper compares the animated simulation results to a benchmark case with measured wind-tunnel data. The results indicate that at certain points in the animation, the accuracy is very high. However, the challenge lies in predicting best frame at which to stop the animation. The paper ends with a discussion of how this challenge might be tackled.
wos WOS:000372317300024
series eCAADe
email
more https://mh-engage.ltcc.tuwien.ac.at/engage/ui/watch.html?id=c02da8d0-702d-11e5-ba25-7396141e161c
last changed 2022/06/07 07:52

_id caadria2013_186
id caadria2013_186
authors Kaushik, Vignesh and Patrick Janssen
year 2013
title An Evolutionary Design Process – Adaptive-Iterative Explorations in Computational Embryogenesis
doi https://doi.org/10.52842/conf.caadria.2013.137
source Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 137-146
summary Computational embryogenies are a special kind of genotype to phenotype mapping process widely used inexplorative evolutionary systems as they provide the mechanism for generating more complex solutions. This paper focuses on how designers explore embryogenies for specific design scenariosthrough an adaptive-iterative process.The process is demonstratedfor a complex project to generate a prototypical urban farm in Singapore. It is shown that by employing an adaptive-iterative process, the embryogeny can be made progressively more complex and less abstract, thereby allowing the exploration to be guided by the designer.  
wos WOS:000351496100014
keywords Computational embryogeny, Evolutionary, Multi-criteria optimization, Encoding, Decoding 
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2012_036
id caadria2012_036
authors Kaushik, Vignesh Srinivas and Patrick Janssen
year 2012
title Multi-criteria evolutionary optimisation of building enveloped during conceptual stages of design
doi https://doi.org/10.52842/conf.caadria.2012.497
source Proceedings of the 17th International Conference on Computer Aided Architectural Design Research in Asia / Chennai 25-28 April 2012, pp. 497–506
summary This paper focuses on using evolutionary algorithms during conceptual stages of design process for multi-criteria optimisation of building envelopes. An experiment is carried out in optimising a panelled building envelope. The design scenario for the experiment is based on the scenario described in Shea et al. (2006) for the building envelope of the Media Centre Building in Paris. However, in their research, the optimisation process only allowed panel configuration to be optimised. In this paper, the task is to approach the optimisation of the envelope of the same building, assuming it to be in the early phases of the design process. The space of possible solutions is therefore assumed to be much wider, and as a result both external building form and internal layout of functional activities are allowed to vary. The performance intent of the experiment remains the same as that of Shea et al. (2006), which was to maximise daylight and minimise afternoon direct sun hours in the building at certain specific locations.
keywords Multi-criteria optimisation; building envelopes; conceptual stages of design evolutionary algorithms; parametric design
series CAADRIA
email
last changed 2022/06/07 07:52

_id 62c2
authors Kavakli, M., Suwa, M., Gero, J.S. and Purcell, T.
year 1999
title Sketching interpretation in novice and expert designers
source Gero, J.S. and Tversky, B. (Eds.), Visual and Spatial Reasoning in Design , Key Centre of Design Computing and Cognition, University of Sydney, Sydney, Australia, pp. 209-220
summary This paper focuses on the differences in visual reasoning between a novice and an expert architectural designer during the conceptual design process. The cognitive actions of each designer while sketching were categorized into four main groups (each consisting of a number of sub-groups): physical, perceptual, functional, and conceptual. Based on this analysis, we found that the expert differs markedly from the novice in productivity in terms of the number of sketches and the number of alternative ideas. We focused on the differences between them in terms of the frequencies of cognitive actions, with the hypothesis that the difference in productivity could be attributed to the differences in some or all types of cognitive actions. Differences between the expert and the novice were found for revising features (in the subcategory of drawing actions in the physical action category), for paying attention to the relations of depicted elements (perceptual category) and for the rates of new and revisited functions (functional category). These results are discussed in terms of the types of visual reasoning processes that could be involved in expert design and the possible implications of these results if they can be demonstrated to be characteristic of expert designers generally.
keywords Visual Reasoning, Cognitive Actions, Sketching Interpretation
series other
email
last changed 2003/04/06 09:18

_id ecaade2022_70
id ecaade2022_70
authors Kavuncuoglu, Canberk, Akgün, Yenal and Özener, Ozan Önder
year 2022
title Kinetic Architecture and BIM Integration - A case study on a Bricard linkage canopy system
doi https://doi.org/10.52842/conf.ecaade.2022.1.243
source Pak, B, Wurzer, G and Stouffs, R (eds.), Co-creating the Future: Inclusion in and through Design - Proceedings of the 40th Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2022) - Volume 1, Ghent, 13-16 September 2022, pp. 243–252
summary This paper presents a case study focusing on BIM integration to kinetic structure design based on an extended kinetic BIM (KBIM) ontology through a Bricard linkage canopy system. With the parametric abstraction of structural system components and kinematic behaviors, the design process was carried out in a BIM environment using KBIM models and objects. The study results show the effectiveness of the proposed KBIM framework for the synthesis and assessment of design alternatives according to total system performance, architectonic composition, and environmental responsiveness.
keywords BIM, Kinetic Architecture, Bricard Linkage, Parametric Design
series eCAADe
email
last changed 2024/04/22 07:10

_id caadria2018_134
id caadria2018_134
authors Kawabe, Akihiro and Watanabe, Shun
year 2018
title An Analysis of Mixed Land Use Toward Designing the Compact City
doi https://doi.org/10.52842/conf.caadria.2018.2.493
source T. Fukuda, W. Huang, P. Janssen, K. Crolla, S. Alhadidi (eds.), Learning, Adapting and Prototyping - Proceedings of the 23rd CAADRIA Conference - Volume 2, Tsinghua University, Beijing, China, 17-19 May 2018, pp. 493-502
summary Applying the method of "Land-Use Mix" (Amindabari et al. (2013)) and Focusing on changes in highly mixed land use areas within an extensive survey area and detailed analytical unit, the analysis in this study revealed some trends of distribution of mixed land use areas and their declining patterns in the eastern part of Saitama Prefecture, Japan. For example, among the changing land use patterns of Highly-Mixed-Points-as-of-1994, the pattern that a decreasing mixture index was associated with increasing residential land and decreasing commercial land occurred most often, and the points that changed with that pattern accounted for about 32% of all the Highly Mixed Points, and about 51% of the decrease in mixture index points.
keywords Metropolitan Form Analysis; Land-Use Mix; GIS; Mixed land use; Compact City
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2020_184
id caadria2020_184
authors Kawagishi, Noboru, Fuji, Takaaki, Hotta, Kensuke and Hotta, Akito
year 2020
title Comparative Study on Urban Virtual Modeling Platforms for Urban Planning and Design Practice
doi https://doi.org/10.52842/conf.caadria.2020.2.031
source D. Holzer, W. Nakapan, A. Globa, I. Koh (eds.), RE: Anthropocene, Design in the Age of Humans - Proceedings of the 25th CAADRIA Conference - Volume 2, Chulalongkorn University, Bangkok, Thailand, 5-6 August 2020, pp. 31-40
summary This paper examines urban virtual modelling platforms (UVMPs) to be used for urban planning and design practice, thus following points are revealed; firstly, comparing existing platforms in the case study, capability of each platform is pointed out. Secondly, potentials of UVMPs for urban planning and design process, including A) Collaborative Design, B) Simulation-based Design and C) AI-involved Design are also tested in the case study. Consequently, a possible system with above potentials is tested and the workflow for urban planning and design practice using UVMPs is suggested.
keywords Digital Twin; Urban Planning; Collaborative Design; Simulation-based Design; AI-involved Design
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2009_062
id caadria2009_062
authors Kawaguchi, Takayuki; Yoshihiro Nishimura, Atsumi Maruhashi, Tomohiro Fukuda and Nobuyoshi Yabuki
year 2009
title A Study of The Virtual Reality Simulation System for LRT Projects Towards Sustainable City
doi https://doi.org/10.52842/conf.caadria.2009.023
source Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 23-32
summary Recently, many cities in Japan and in other developed nations face problems such as decadence of downtown areas, aged society with a fewer number of children, dependence on automobile transport, etc. And redesign of public transportation services (e.g. tram) is thought to be one of the solutions for these problems. The introduction of LRT is investigated in various places, however, when a public traffic system like LRT is introduced, it is necessary to consider not only the transportation oriented aspects, but also landscapes and plans for a future sustainable city. Therefore, city planners are required to promote workshop-type in the design process to deal with citizens, companies, NPOs, etc. In this research, both components of the VR system for LRT projects and the system that enables the examination from various aspects of traffic, landscapes, city planning, etc., were studied.
keywords VR; LRT; community development; consensus building; transport planning
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2021_276
id caadria2021_276
authors Kawai, Yasuo
year 2021
title Development of a Tsunami Evacuation Behavior Simulation System for Selection of Evacuation Sites
doi https://doi.org/10.52842/conf.caadria.2021.2.499
source A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 2, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 499-508
summary In this study, a tsunami evacuation simulation system was developed using a game engine and open data to reflect the conditions of a local emergency situation at low cost. Chigasaki City, which is a heavily populated urban area and tourist destination along the coast of Japan, was selected as the target area for this study. A total of 20 simulations were conducted using 20,000 evacuation agents categorized as child, adult, or elderly residents or visitors randomly placed on the road surface in the target area. The simulation results indicate that a 10.60% agent damage rate may occur for a tsunami of height 10 m. In lowland areas where the river flows inland, tsunamis were observed to move up the estuary, trapping agents between the river and the coast. In such inland areas, several areas with no tsunami evacuation buildings were observed. Thus, the low-cost simulations provided by the proposed system can provide necessary support for planning and designating appropriate tsunami evacuation buildings in disaster-prone areas.
keywords Tsunami; Evacuation ; Agent; Simulation; Game Engine
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2021_274
id caadria2021_274
authors Kawai, Yasuo
year 2021
title Urban Space Simulation System for Townscape Ordinance
doi https://doi.org/10.52842/conf.caadria.2021.2.479
source A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 2, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 479-488
summary In this study, a game engine-based urban space simulation system for townscape ordinance was developed and evaluated. For accurate evaluation of a townscape, it is important for the townscape simulation to be as close to reality as possible from various perspectives. The proposed system employs a freely moving first-person viewpoint with different height and origin variations; the building height and exterior wall color can also be changed. To evaluate the system, the simulation and photographic images were compared. The photographic images exhibited a higher gaze rate on spatial components; high gaze rates were also observed for vehicle and pedestrian in the photographic images. Therefore, we recreated dynamic spatial components such as vehicles and pedestrians. Additionally, we successfully reproduced the night townscape via a switchable light source and enabled the control of the numbers of poles and signs. The townscape reproduced by the proposed system could contribute to townscape planning. In the future, a more versatile urban space simulation system that combines various sources of urban information can be developed.
keywords Landscape Simulation; Game Engine; Urban Planning; Gaze Elements; Sequence
series CAADRIA
email
last changed 2022/06/07 07:52

_id ddssup0208
id ddssup0208
authors Kawakami, Mitsuhiko and Zhenjiang, Shen
year 2002
title Formulation of an Urban and Regional Planning System Basedon a Geographical Information System and its Application- A Case Study of the Ishikawa Prefecture Area of Japan -
source Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part two: Urban Planning Proceedings Avegoor, the Netherlands), 2002
summary An Urban and Regional Planning System based on a geographical information system was developed using four sub-systems consisting of a digital map system, a database system, an analysis and forecast system and a planning system. In this case ARCVIEW GIS software was used as a development tool. The digital map system is formulated by the planar orthogonal coordinate system. The data is converted from digital maps issued by the Geographical Survey Institute of Japan (GSI). The database system has layers of data sets, which consist of statistical data, attribute data of geographical points and characteristics of natural features and the built environment. Several sets of principal census data havebeen converted to mesh data. These kinds of data sets are also utilized to this system. LANDSAT TM data is converted into vector data and linked to the same coordinate system. The analysis and forecast system consists of statistical or mathematical analysis, forecasts and visual presentations of the results. The planning system consists of some planning models and reviewing techniques to evaluate alternatives. As an example, this paper examines the relationship between land use and the temperatureon the ground level in built-up areas.
series DDSS
last changed 2003/08/07 16:36

_id b15f
authors Kawasumi, N., Morozumi, M., Shounai, Y. and Homma, R.
year 2001
title The study of design interface for network collaboration
doi https://doi.org/10.52842/conf.caadria.2001.295
source CAADRIA 2001 [Proceedings of the Sixth Conference on Computer Aided Architectural Design Research in Asia / ISBN 1-86487-096-6] Sydney 19-21 April 2001, pp. 295-298
summary In this paper, we discuss about the design interface for the Virtual Design Studio projects and intend to develop the experimental prototype to evaluate our idea. Web pages and simple script, such as the digital bulletin board, are generally used for the network collaboration. But these systems require the extra work for designer to present his proposal on the web. So we propose the Visual Pinup Board that is possible to handle the registered design proposal like the actual pinup board and it can be used with common web browser.
series CAADRIA
email
last changed 2022/06/07 07:52

_id e89e
authors Kawasumi, Norihiro and Yamaguchi, Shigeyuki
year 1998
title Reconstruction of an Architectural Three Dimensional Model from Orthographic Drawings
doi https://doi.org/10.52842/conf.caadria.1998.355
source CAADRIA ‘98 [Proceedings of The Third Conference on Computer Aided Architectural Design Research in Asia / ISBN 4-907662-009] Osaka (Japan) 22-24 April 1998, pp. 355-364
summary In this paper, we describe a semi-automatic reconstruction method of a three-dimensional model from orthographic view drawings of architecture. There are several approaches to reconstruct three-dimensional solids from two-dimensional drawings. But most of them deal with mechanical drawings, not architectural drawings. We observed three-dimensional modeling process of design practice and we tried to make clear model-ing procedure from architectural drawings, such as plan and elevation views, and classified into seven typical modeling operations on three-dimensional CAD system. Then we pro-posed a reconstruction method to create a surface three-dimensional model from a set of architectural plan and elevation drawings. Each elevation drawing is defined as polygon elements. The reconstruction system makes each element of elevations built up and then placed each around the contour of the plan drawing. Several illustrative examples are in-cluded as results.
keywords CAD, Interface, Modeling, Drawing Recognition
series CAADRIA
email
more http://www.caadria.org
last changed 2022/06/07 07:52

_id b578
authors Kawasumi, Norihiro and Yamaguchi, Shigeyuki
year 1999
title A Study of Design Information System for Network Collaboration
doi https://doi.org/10.52842/conf.caadria.1999.191
source CAADRIA '99 [Proceedings of The Fourth Conference on Computer Aided Architectural Design Research in Asia / ISBN 7-5439-1233-3] Shanghai (China) 5-7 May 1999, pp. 191-199
summary In this paper, we discuss about the architectural design collaboration and information management based on the worldwide network. Internet and WWW are rapidly infiltrating through the architectural schools in the world, so it is easy to communicate and share the design information with web homepage and e-mail. But, a set of homepage and e-mail is not sufficient for easy and smooth design. Because of the data management method and system for network collaboration is not yet well organized nor well developed. In this paper, we report the results of two Virtual Design Studio projects that we have experienced and intend to analyze the problems to exchange and share the design information on the web. Then we propose the collaborative design system environment and evaluate it from the result of the experimental third Virtual Design Studio project that we have executed.
series CAADRIA
more http://archigraf.archi.kit.ac.jp/
last changed 2022/06/07 07:52

_id ecaade2008_122
id ecaade2008_122
authors Kawasumi, Norihiro; Morozumi, Mitsuo; Homma, Riken
year 2008
title The APEX/VPB & MAP: Graphical Design Interface and Archive for Distributed Collaboration
doi https://doi.org/10.52842/conf.ecaade.2008.341
source Architecture in Computro [26th eCAADe Conference Proceedings / ISBN 978-0-9541183-7-2] Antwerpen (Belgium) 17-20 September 2008, pp. 341-348
summary The digital tools are most convenient technologies to realize distributed collaborative design environment on the web. A lot of practical design systems have been already developed with researches in the world. On these systems, the digital bulletin board and web-map technologies are generally used to support for group-discussing and exchanging design proposals via the web. But some of them are only possible to store design materials apart on the web and the peculiar interface is not well-optimized for architectural design activities. In this paper, we discuss to develop the collaborative design system simulated of our practical group-work methods. The APEX/VPB & MAP will realize the easy information management with interactive digital bulletin board and map-based interface. Finally, we will report the results of our experimental design studio using with APEX/VPB & MAP.
keywords Dynamic Interface, Distributed Collaboration, Geographical Map Navigation, Design Management, Web Archive
series eCAADe
email
last changed 2022/06/07 07:52

_id c6a9
authors Kay, Douglas Scott and Greenberg, Donald P.
year 1979
title Transparency for Computer Synthesized Images
source SIGGRAPH '79 Conference Proceedings. August, 1979. vol. 13 ; no. 2: pp. 158-164 : ill. (some col.). includes bibliography
summary Simple transparency algorithms which assume a linear transparency over an entire surface are the type most often employed to produce computer synthesized images of transparent objects with curved surfaces. Although most of the images created with these algorithms do give the impression of transparency, they usually do not look realistic. One of the most serious problems is that the intensity of the light that is transmitted through the objects is generally not proportional to the amount of material through which it must pass. Another problem is that the image seen behind the objects is not distorted as would naturally occur when the light is refracted as it passes through a material of different density. Use of a non-linear transparency algorithm can provide a great improvement in the realism of an image at a small additional cost. Making the transparency proportional to the normal to the surface causes it to decrease towards the edges of the surface where the path of the light through the object is longer. The exact simulation of refraction, however, requires that each sight ray be individually traced from the observer, through the picture plane and through each transparent object until an opaque surface is intersected. Since the direction of the ray would change as each material of differing optical density was entered, the hidden surface calculations required would be very time consuming. However, if a few assumptions are made about the geometry of each object and about the conditions under which they are viewed, a much simpler algorithm can be used to approximate the refractive effect. This method proceeds in a back-to-front order, mapping the current background image onto the next surface, until all surfaces have been considered
keywords computer graphics, shading, transformation, display, visualization, algorithms, realism
series CADline
last changed 2003/06/02 13:58

_id ecaade2018_224
id ecaade2018_224
authors Kay, Ipek, Akgün, Bahar, Tümerdem, Deniz and Bingol, Cemal Koray
year 2018
title A Sensory and Bodily Approach to Curriculum Construction for Design Education
doi https://doi.org/10.52842/conf.ecaade.2018.1.333
source Kepczynska-Walczak, A, Bialkowski, S (eds.), Computing for a better tomorrow - Proceedings of the 36th eCAADe Conference - Volume 1, Lodz University of Technology, Lodz, Poland, 19-21 September 2018, pp. 333-340
summary This paper proposes a framework for integrating physical and digital design medium addressing a sensorial aspect of design thinking. The theoretical framework, the process and the results of two consecutive exercises taught as a preliminary project of an interior design studio are introduced and discussed. The approach aims to determine intuitive modes of communication between students and digital environments.
keywords digital design; design theory; design methodology; design thinking; interaction design; sensorial experience
series eCAADe
email
last changed 2022/06/07 07:52

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