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 cf2005_1_22_147
id cf2005_1_22_147
authors CHAN Chiu-Shui, DANG Anrong and TONG Ziyu
year 2005
title A 3D Model of the Inner City of Beijing
source Computer Aided Architectural Design Futures 2005 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-3460-1] Vienna (Austria) 20–22 June 2005, pp. 63-72
summary This study has two major concentrations: 1) exploring methods of creating a digital city model, and 2) applying the model to study urban spatial structure, an issue of particular interest and importance to urban planners. Based on existing studies that primarily address two-dimensional (2D) urban structure, this paper focuses on the three-dimensional (3D) structure relating to the 3D urban form. Given their greater clarity and possibilities for quantitative analysis, both 3D digital urban models and GIS spatial overlay analysis methods hold tremendous potential for analysing and predicting future urban form. In this project, the Xidan Business District in Beijing's Inner City was the area selected to implement the digital-city application. Under the hypothesis that the existing urban spatial structure is determined by the city's urban planning scheme and current urban marketing forces, it is found that actual urban development does not follow the planning restrictions on zoning and building height regulations. Some contradictions and conflicts, such as building location and height, appeared in the studied district. The specific reasons for the discrepancies need to be further studied.
keywords 3D city modeling, GIS, remote sensing, virtual environments
series CAAD Futures
email
last changed 2006/11/07 07:27

_id 9cf4
authors Chan, C., Hill, L. and Cruz-Neira, C.
year 1999
title Is it Possible to Design in Full Scale? A CAD Tool in a Synthetic Environment
doi https://doi.org/10.52842/conf.caadria.1999.043
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. 43-52
summary This project developed a Virtual Architectural Design Tool (VADeT) executed in the C2 Virtual Reality (VR) space. C2 is a synthetic CAVE environment providing a full-scale setting for image projection and perception. Applying this tool for design offers four advantages over other CAD systems. First, it enables navigation performing in full scale to create the sense of immersion and reflection of the seeing-as. Second, it allows the creation, modification, and editing of three-dimensional objects in a virtual space. Third, designs can be modified and viewed simultaneously inside or outside of the generated model to obtain the best design products. Fourth, the entire design process can be recorded and played back. Collectively, this tool serves the purposes of: (1) a three-dimensional sketching tool for manipulating 3-D objects, (2) a design study tool for transparently displaying the design processes, and (3) a design teaching tool to demonstrate the processes by which designers do design. Thus, design in a full-scale representation not only is possible but also is a new and unconventional mode that will heavily influence design thinking.
series CAADRIA
last changed 2022/06/07 07:56

_id ecaade2023_49
id ecaade2023_49
authors Chan, Caleb, Pelosi, Antony and Brown, Andre
year 2023
title VR Controlled Remote Robotic Teleoperation for Construction Applications
doi https://doi.org/10.52842/conf.ecaade.2023.1.369
source Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 1, Graz, 20-22 September 2023, pp. 369–376
summary The research in this paper addresses the challenges that had to be overcome to create a functioning VR controlled robotic device. We consider what the communication and control systems are needed to deliver such a robotic device. We also ask if teleoperation of a robot using VR provide can provide a sufficiently accurate and responsive means of delivering site construction operations. The resulting aspects that we report on in the paper are the communication issues to be addressed, accuracy and dexterity issues in simulated construction situations, and practical issues such as reducing lag between a VR action and robot reaction.
keywords Robotics, VR, Teleoperation, Construction, Site, Remote
series eCAADe
email
last changed 2023/12/10 10:49

_id 30f5
authors Chan, Chen-Wei and Chiu, Mao-Lin
year 2000
title A Simulation Study of Urban Growth Patterns with Fractal Geometry
doi https://doi.org/10.52842/conf.caadria.2000.055
source CAADRIA 2000 [Proceedings of the Fifth Conference on Computer Aided Architectural Design Research in Asia / ISBN 981-04-2491-4] Singapore 18-19 May 2000, pp. 55-64
summary This paper depicts the use of fractal geometry in urban simulation. Fractal geometry, L-system, the DLA model, and related urban growth theories are first examined. Then an urban simulation system based on fractal geometry and L-system, Fractal_US, is built on the web for studying urban development patterns in various conditions. The Taipei city is simulated to demonstrate the visualization of urban growth and the result is presented for further discussion.
series CAADRIA
email
last changed 2022/06/07 07:56

_id ddss9417
id ddss9417
authors Chan, Chiu-Shui
year 1994
title A Hypermedia Tutoring for Multimedia Tasks
source Second Design and Decision Support Systems in Architecture & Urban Planning (Vaals, the Netherlands), August 15-19, 1994
summary Using a computer or a software package involves procedural knowledge, or knowledge of a series of instructions. When a user recognizes the appropriate computer commands (the method) in acertain application, it is assumed that the user is capable of doing a computer-related or computeraided task. Based on this assumption, the current project explores methods of developing a computer tutoring system to convey know-how efficiently. The purpose of the project is to make novices familiar with machines and with techniques of handling multimedia for presenting design concepts. A teaching tool is designed that combines images, sounds, and movements to create an effective learning environment. The tool is a hypermedia system consisting of different software and hardware components implemented in the HyperCard. How to manipulate different media will be taught by means of cross-references, graphic display, text explanations, and background music. Hopefully, this project will suggest some useful methods for teaching CAD to novice computer users.
series DDSS
email
last changed 2003/08/07 16:36

_id acac
authors Chan, Chiu-Shui, and Browning, Todd R.
year 1999
title Design Simulation
doi https://doi.org/10.52842/conf.caadria.1999.243
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. 243-252
summary This paper intends to explore methods of constructing a design simulator. Two methodologies, approached differently, imitate the human design processes. The first component is an algorithmic method which has a cognitive model embedded. This cognitive model hypothesizes that human design has certain design logic applied. The design rationales are based on knowledge stored in a designer_ memory. Each time a similar design task is encountered, the same design procedures will be repeated for completion. What makes the results different are the design information used and sequences of processing it. A kitchen design using procedural algorithms is developed to simulate this design aspect. The second component simulates an intuitive design approach. Intuition is defined as design by rules of thumb, or heuristic design. This study investigated how to simulate an intuitive design process. The method involves building up a set of inductive rules symbolizing cultural aspects that need to be addressed in a design. A residential foyer design is the simulation task. The driving force is the heuristics. Results in this study have shown that there are many variables to include but impossible to capture and simulate any of the design processes, which are the reasons why studies in this area are difficult.
series CAADRIA
email
more http://www.public.iastate.edu/~cschan
last changed 2022/06/07 07:56

_id caadria2007_451
id caadria2007_451
authors Chan, Chiu-Shui
year 2007
title Evaluating the Cognition in a Work Space Virtually
doi https://doi.org/10.52842/conf.caadria.2007.x.v8d
source CAADRIA 2007 [Proceedings of the 12th International Conference on Computer Aided Architectural Design Research in Asia] Nanjing (China) 19-21 April 2007
summary In any built environment, there exist certain subtle stimuli that affect the occupants’ cognitive processes and performance. This research intends to identify: (1) what environmental stimuli an office building would generate that could affect the habitants’ cognitive ability, and (2) how the habitants react to these stimuli. The goals of the study are to develop a new method for using immersive virtual reality to represent a built environment for simulating environmental impact, and to discover factors that could influence habitants’ cognitive performance in a space. It is expected that the discoveries could advance the application of virtual reality to study human cognition in architecture.
series CAADRIA
email
last changed 2022/06/07 07:50

_id cf2007_373
id cf2007_373
authors Chan, Chiu-Shui
year 2007
title Does Color Have Weaker Impact on Human Cognition Than Material?
source Computer Aided Architectural Design Futures / 978-1-4020-6527-9 2007 [Proceedings of the 12th International Conference on Computer Aided Architectural Design Futures / 978-1-4020-6527-9] Sydney (Australia) 11–13 July 2007, pp. 373-384
summary This project intends to develop a method for using virtual reality (VR) to represent a built environment for simulating environmental influences on occupants. Objectives of the project were to explore: (1) what environmental stimuli would affect habitants’ perception, and (2) what possible factors in the built environment would affect occupants’ cognition. An office was selected as the subject of study. Methods were to create a number of digital models, each containing an embedded variable, and then test the impact of environmental influences on visual perception. Results obtained in this study indicate that materials have stronger impact to human perception than colors, and VR has great potential for design decision making and post-occupancy evaluation.
series CAAD Futures
email
last changed 2007/07/06 12:47

_id ecaade2021_326
id ecaade2021_326
authors Chan, Holly, Brown, Andre, Moleta, Tane and Schnabel, Marc Aurel
year 2021
title Augmented Spaces - If walls could talk
doi https://doi.org/10.52842/conf.ecaade.2021.2.575
source Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 2, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 575-584
summary This paper explores the development of Augmented Spaces that involve embedding within the built environment, digitally responsive recognition of human presence. Contemporary digital media provides the opportunity to enhance physical space with the property of immediate interaction, which results in a high level of user engagement and responsivenenss. Through the addition of digital media, emotional and reflective value can be added to the built form. If space is designed to be reactive, rather than passive, a dialogue can be established between the user/inhabitant and the environment. We report on the establishment and analysis of a set of prototype digital interventions in urban space that react to human presence. One is in a building threshold space; one an urban street. We describe the development of a digital particle system with two inputs; the first being the geometry that generates the particles and the second being the geometry that displaces the particles. The research goals that we report on are driven by three over-riding response criteria, Visceral, Behavioural and Reflective.
keywords augmented space; reactive; synesthetic
series eCAADe
email
last changed 2022/06/07 07:56

_id 9937
authors Chandansingh, R.A., and Vos, Ch.J.
year 1993
title Modelling effects of cad on concrete construction using production graphs
source The Int. Journal of Construction IT 1(4), pp. 39-50
summary Quantitative statements on effects of CAD systems are needed to manage their use in concrete construction, but are hard to make. This paper describes an approach to model the effects of CAD systems on concrete construction. The approach is based on the concept of 'the market value of information commodities', and uses graph theory to build a formal model of the construction process. The formal model, so-called production graph, allows for investigation and quantification of the effects of CAD systems, which depend on their so-called value adding dimensions. An example of application of the approach is provided. Experiences with this approach are very good. General patterns between the value adding dimensions of CAD systems and their effects on production graphs must be determined to develop a descriptive and predictive model. Case-studies are being done to identify these general patterns.
series journal paper
last changed 2003/05/15 21:45

_id caadria2014_142
id caadria2014_142
authors Chandra, Daniels and Ning Zhou
year 2014
title BIM Add-on Tool for Automated CUI Calculation
doi https://doi.org/10.52842/conf.caadria.2014.305
source Rethinking Comprehensive Design: Speculative Counterculture, Proceedings of the 19th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2014) / Kyoto 14-16 May 2014, pp. 305–314
summary The Building and Construction Authority (BCA) of Singapore established Sustainable Construction Master Plan with the goal of achieving a Sustainable Singapore Blueprint. The Concrete Usage Index (CUI) is a part of Sustainable Construction scoring under Singapore’s ‘Green Mark’ system. Since computation of CUI score was formerly calculated manually without the use of BIM software, it was an inaccurate and tedious process. Although calculation of CUI is currently much faster through the use of BIM software, it still faces challenges. The objective of this project is to address those challenges by creating a BIM addon tool which is capable of automating the process of CUI calculation with minimum user input. Our intention is to help the industry to calculate CUI systematically and efficiently while promoting the adoption of BIM.
keywords CUI; Concrete Usage Index; BIM; Green Mark; sustainable design
series CAADRIA
email
last changed 2022/06/07 07:56

_id caadria2005_a_7b_c
id caadria2005_a_7b_c
authors Chang, Chuang-Ting
year 2005
title Some Phenomena of Touch in Study Models
doi https://doi.org/10.52842/conf.caadria.2005.277
source CAADRIA 2005 [Proceedings of the 10th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] New Delhi (India) 28-30 April 2005, vol. 1, pp. 277-287
summary The senses of “Touch” bring people the feeling of reality, and human beings can always naturally sense the tactile impression. Hence we touch things and our sense tells us that our hands are touching something (Hinckley et al. 1999). Comparing to the tools used by designers between traditional and new digital media in the design process, the most difference is in the sense of touch. This paper focuses on the sense of touch to point out the haptic experience which have ignored by the past in design process. Four phenomena will be discussed in details and some useful suggestions given for future study.
series CAADRIA
email
last changed 2022/06/07 07:56

_id ea4c
authors Chang, Hsi and Iyengar, S. Sitharama
year 1984
title Efficient Algorithms to Globally Balance a Binary Search Tree
source Communications of the ACM. July, 1984. vol. 27: pp. 695-702. includes bibliography
summary A binary search tree can be globally balanced by readjustment of pointers or with a sorting process in O(n) time, n being the total number of nodes. This paper presents three global balancing algorithms, one of which uses folding with the other two adopting parallel procedures. These algorithms show improvement in time efficiency over some sequential algorithms when applied to large binary search trees. A comparison of various algorithms is presented
keywords techniques, parallel processing, algorithms, search, sorting
series CADline
last changed 2003/06/02 13:58

_id ecaade2024_14
id ecaade2024_14
authors Chang, Shu Ting Magdalene; Lee, Ho Nam Marco; Pan, Chin Kit Peter; Lo, Tian Tian Sky
year 2024
title Exploring Phygitalization in Architecture: Comparative analysis of the reality of digital and physical experiences in relationships of humans and space
doi https://doi.org/10.52842/conf.ecaade.2024.2.169
source Kontovourkis, O, Phocas, MC and Wurzer, G (eds.), Data-Driven Intelligence - Proceedings of the 42nd Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2024), Nicosia, 11-13 September 2024, Volume 2, pp. 169–177
summary Contemporary designers utilize extended reality (XR) to merge the physical and digital realms, aiming to create immersive user experiences, a concept known as "phygitalization." However, current studies predominantly focus on the visual aspects of XR, resulting in underdeveloped XR systems. This research aims to address this gap by examining the role of haptic experiences in enhancing immersion within the virtual environment, thereby bridging the divide between the physical and digital worlds. The research methodology involved a literature review to explore relevant terminologies related to physics, space, experience, senses, and human perception. Subsequently, an experiment was conducted to investigate the impact of connectivity between the physical and digital worlds on human perception. The experiment involved participants using a VR headset to interact with virtual "sand" and then directly interacting with different physical materials that have similarities and differences to the virtual environment, aiming to investigate (a) the incorporation of real objects in (b) interior and exterior virtual settings and (c) the disparities between physical and virtual materials. The study results showcased that by combining XR with physical haptic experiences, it is possible to enhance immersion in the virtual environment, contributing to the development of “Data-Driven Intelligence”, while recognizing that it may not fully substitute the physical world. This research seeks to explore the relationship between humans and space in both digital and physical experiences and paves the way for investigating how the integration of XR in architectural contexts can influence human perception, sensory abilities, and experiential encounters.
keywords Space, Phygital, Degree of realism, Material properties, Human perception
series eCAADe
email
last changed 2024/11/17 22:05

_id c006
authors Chang, T.-W. and Huang, J. H.
year 2001
title The acting roles model of web-based learning - Web-based Architectural Learning Envirnoment (WALE)
doi https://doi.org/10.52842/conf.caadria.2001.323
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. 323-327
summary Some useful aspects are learned on the asynchrony characteristics of Web and a crucial exhibiting space so-called gallery composed by studentsÌ creation proposes a positive virtual learning space. In this paper, an acting role-interplayed system (WALE) is demonstrated through a CAD subject for third-year architectural students at Ming Chuan University will reveal and evaluate the potential or drawback of such environment. WALE is based on a game-playing learning environment for students to interact motivated and to evolve the design potential of individual. This study of WALE is facilitated with CAD tools and developed to help students to explore possible design alternatives by acting multi-role in the process of design.
series CAADRIA
email
last changed 2022/06/07 07:56

_id cf2003_m_103
id cf2003_m_103
authors CHANG, T.-W., WOODBURY, R. and DATTA, S.
year 2003
title Interactive Mapping between Knowledge Level and Symbol Level with Geometry. A KL-Model for Design Space Exploration
source Digital Design - Research and Practice [Proceedings of the 10th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-1210-1] Tainan (Taiwan) 13–15 October 2003, pp. 157-166
summary Design space exploration is long-standing motivating ideas in computer-aided design. It realises this vision through a model of design states for making and moving amongst states and an organisation of states into a structure called a design space. Using a design space structuring mechanism based on a subsumption relation, this paper sketches a theory called Geometric Typed Feature Structures (GTFS) to preserve the formal properties of the design space movement algorithms for geometry. It also provides the theory for incorporation of user-guided exploration in the design space. Consequently, the clear division between knowledge level and symbol level, such that functional decomposition •• formal symbol level and design •• model symbol level, disappears. We can therefore use the same subsumption relation to structure the design space exploration interactively. Such interactive mapping between knowledge level and symbol level provides the fine-grained opportunities for user intervention in formal design space movement algorithms. In this paper, we summarize this approach with an example of GTFS subsumption process.
keywords design space, geometric description, knowledge level, subsumption, unfolding
series CAAD Futures
email
last changed 2003/09/22 12:21

_id 2004_248
id 2004_248
authors Chang, Teng-Wen and Woodbury, Robert F.
year 2004
title GEOMETRY IN HIGHLY STRUCTURED DESIGN SPACES
doi https://doi.org/10.52842/conf.ecaade.2004.248
source Architecture in the Network Society [22nd eCAADe Conference Proceedings / ISBN 0-9541183-2-4] Copenhagen (Denmark) 15-18 September 2004, pp. 248-254
summary The Australian branch of the SEED project created a new formalism for design spaces in which the fundamental structuring operator is information specificity, formally characterised as subsumption. Here design space navigation is composed as combinations of the primitive operators of resolution, unification, anti-unification, search, query and hysterical undo. The structures needed to support such a view are highly constrained in a mathematical sense and it is in these constraints that the problems for representation of geometry arise. The research challenge is to add the formal design space exploration constraints into an existing geometric representation scheme or alternatively to discover a new scheme in which the constraints are realized. Based on Typed Feature Structures (TFS), Geometric Typed Feature Structures (GTFS) are a representation scheme and method for performing the basic design space exploration operations on geometric objects. The crucial insight behind extending TFS to geometry is to discover useful algebraic structures of geometric objects affording the mathematics required of TFS. In this paper we describe Geometric Typed Feature Structures through one example of form: IOPSet. Our method of exposition is both mathematical and graphical: for each structure we will demonstrate both how it meets the necessary formal conditions as well as the sorts of form-sculpting operations it enables. An architectural example: insulated enclosure is used as a demonstration of subsumption operations over IOPSet. One alternative description of insulated enclosure using GTFS is also shown in the paper.
keywords Geometric Typed Feature Structures, SEED, Design Space Explorer, Geometric Design Information
series eCAADe
type normal paper
email
last changed 2022/06/07 07:56

_id caadria2009_024
id caadria2009_024
authors Chang, Teng-Wen; Ching-Jung Lin and Yi-Yen Wang
year 2009
title Exploring Intended Implicate Solution
doi https://doi.org/10.52842/conf.caadria.2009.567
source Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 567-576
summary Design is an iterative exploration process that will invoke many fragmented information with continuous iteration. While fragmented, implicit information lay among these fragmented pieces has shown more potential to achieve some goals that we might skip during the decisionmaking. These potential design goals named implicit intended solution are the problem spaces we want to explore in this research. Therefore, the continuous thinking/operation process cross these fragmented design decision might show some insights for discovering implicit intended solutions. This is a two-fold problem, without exploration and its continuous iteration characteristics, these solutions might not even be found or possible found. Therefore, in this paper we have conducted a research based on visualizing these implicit intended solutions as well the exploration process for finding them.
keywords Design diagrams; time-based media; visualization
series CAADRIA
email
last changed 2022/06/07 07:56

_id caadria2009_000
id caadria2009_000
authors Chang, Teng-Wen; Eric Champion, Sheng-Fen Chien and Shang-Chia Chiou(eds.)
year 2009
title CAADRIA 2009 - Between Man and Machine
doi https://doi.org/10.52842/conf.caadria.2009
source Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, 795p.
summary Digital designing takes place through processes of interaction between human designers and computers. As such, its location is the in-between, a shared realm of conversation where capabilities of both man and machine are amplified. CAADRIA 2009 addresses this conversation in terms of three perspectives that drive both research and practice in the computer-aided architectural design field: Digital design as integrating, intuitive and intelligent. CAADRIA 2009 aimed to provide a forum in which ideas pertaining to these notions can be explored, discussed and developed. l Digital design is integrative. With the diverse and fast speed of the global economy in the 21st century, the barrier between different disciplines is being overcome digitally. The integration of multiple disciplines is crucial for facing the next wave of global challenges. l Digital Design is intuitive. With advanced computational technology, how humans will cooperate with machines after the computing era will surely become the next challenge for all computational design-related researchers. Intuitive interaction or computing design is the second theme addressed in CAADRIA 2009. l Digital Design is Intelligent. With artificial intelligence, design intelligence is the third theme we would like to address this year. We wish to challenge global researchers to provide a smart and responsive environment for improving our lives and stimulating our economy in innovative ways.
series CAADRIA
type normal paper
email
last changed 2022/06/07 07:49

_id caadria2012_121
id caadria2012_121
authors Chang, Teng-Wen; Heng Jiang, Sheng-Han Chen and Sambit Datta
year 2012
title Dynamic skin: Interacting with space: An inter-media interface between people and space
doi https://doi.org/10.52842/conf.caadria.2012.089
source Proceedings of the 17th International Conference on Computer Aided Architectural Design Research in Asia / Chennai 25-28 April 2012, pp. 89–98
summary Space in its physical form provides the major architectural experience for the people inside the space. How people interact with their surrounding space dynamically is a noteworthy research topic. Architectural skin (or “skin” in this project) is the physical interface between people and their surroundings. The skin in this sense represents an inter-media that receive/sense the interactive behaviours of people and react back into space. Further, the skin needs to be mediated and reacted dynamically according to the interaction behaviours. With the case studies, the knowledge of skin design has achieved and then applied to develop three prototypes. In order to achieve the feasibility of skin design for dynamic skins, the multiple channels of input sensors are desired. Thus, a system called dynamic skin is proposed and details of process are evaluated. In order to incorporate the diverse scenario appeared in the cases and prototypes, a distributed system approach such as multi-agent system design is appealing to us. We propose a distributed dynamic skin platform that cannot only provide sufficient interaction between people and space, but also extending such space to the cloud and network.
keywords Dynamic skin; multi-agent; distributed; cloud
series CAADRIA
email
last changed 2022/06/07 07:56

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