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	ecaade2009_118
id	ecaade2009_118
authors	Li, Andrew I-kang; Chen, Liang; Wang, Yang; Chau, Hau Hing
year	2009
title	Editing Shapes in a Prototype Two- and Three-dimensional Shape Grammar Environment
doi	https://doi.org/10.52842/conf.ecaade.2009.243
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference Proceedings / ISBN 978-0-9541183-8-9] Istanbul (Turkey) 16-19 September 2009, pp. 243-250
summary	Recently we developed a prototype general shape grammar system, called Grammar Environment (Li et al. 2009). It differs from other systems in that it aims to support designers who design with shape grammars. One task of such a system is to support users in editing shapes. The guidelines that we followed in developing Grammar Environment suggested that the shape editing system should both be integrated into the system and be powerful as a drawing tool. This seemed to be contradictory. We decided to make two shape editors: one stronger on integration, the other on drawing power.
wos	WOS:000334282200030
keywords	Shape grammars, shape grammar interpreter, shape grammar environment
series	eCAADe
email
last changed	2022/06/07 07:59

_id	caadria2009_035
id	caadria2009_035
authors	Li, Andrew I-kang; Hau Hing Chau, Liang Chen, Yang Wang
year	2009
title	A Prototype System for developing two- and Three-Dimensional Shape Grammars
doi	https://doi.org/10.52842/conf.caadria.2009.717
source	Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 717-726
summary	A number of researchers have developed shape grammar systems, with a variety of aims. These systems all help users (to varying degrees) to run grammars, but not to develop grammars. However, we believe that developing grammars is also work and needs to be supported. A system to do this would make it easier and more convenient for people using grammars to do design work. Following the generate-test model, we design and implement a prototype system that supports the user in editing grammars, testing grammars, and switching easily between the two types of activity. We emphasize the graphic nature of the task: the user is all the time working with graphic objects, namely shapes.
keywords	Shape grammar; interpreters; development; systems
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	caadria2010_000
id	caadria2010_000
authors	Dave, Bharat; Andrew I-kang Li, Ning Gu and Hyoung-June Park
year	2010
title	CAADRIA2010: New frontiers
doi	https://doi.org/10.52842/conf.caadria.2010
source	Proceedings of the 15th International Conference on Computer Aided Architectural Design Research in Asia / Hong Kong 7-10 April 2010, 644p.
summary	The ideas and projects described in papers on the following pages provide one snapshot of current research in computer-aided architectural design from around the world. The papers explore the field from diverse perspectives, emphasise different foci, employ a range of methodologies, and demonstrate many different ways in which designs and designing can be construed, understood and supported using digital tools and technologies. The notion of frontiers in this collection of papers reflects not just a quest for new problems but also a reassessment of what we already know, not just what is conventionally understood as design in terms of tangible material configurations but also what may exist only as processes or as immaterial and virtual representations.
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	937c
authors	I-Kang Li, Andrew
year	2002
title	A prototype interactive simulated shape grammar
doi	https://doi.org/10.52842/conf.ecaade.2002.314
source	Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedings / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 314-317
summary	Existing shape grammar interpreters have implemented some of the distinguishing features of the formalism, notably emergence or rule application under multiple transformations. By contrast, I implement a grammar in which these capabilities either are not required or can be simulated. This frees a user from mechanical issues, allowing him to pay more attention to the process embodied in the grammar.
series	eCAADe
email
last changed	2022/06/07 07:50

_id	8c8d
authors	Li, Andrew I Kang and Tsou, Jin Yeu
year	1996
title	Using Virtual Models to Teach Traditional Chinese Wood Construction
doi	https://doi.org/10.52842/conf.caadria.1996.119
source	CAADRIA ‘96 [Proceedings of The First Conference on Computer Aided Architectural Design Research in Asia / ISBN 9627-75-703-9] Hong Kong (Hong Kong) 25-27 April 1996, pp. 119-130
summary	In this paper we discuss our experience in using virtual models to teach traditional Chinese wood construction. Although our approach is technically simple – we use a kit of model parts made with the Solid Modeler of AutoCAD, Release 12 (now Release 13), and customized commands in AutoLISP – we have had excellent results. This is because of the remarkable match between the modelling medium and the highly systematized nature of traditional Chinese wood construction. It is this crucial – and interesting – characteristic that we want students to understand and appreciate. In our first teaching experience, in the fall term, 1994-95, despite unexpected drawbacks, our approach succeeded. In fact, our students, all Hong Kong Chinese, were surprisingly enthusiastic and even took pride in the sophistication of this uniquely Chinese construction system. In 1995-96, we have used the same kit of parts in two courses: an introduction to Chinese architecture (spring term) and an advanced course in Song dynasty wood construction (fall term). We first discuss briefly the theoretical basis for our approach. We then describe the assignments, the kit of parts, and supporting materials used in our teaching experiences. Finally, we discuss our findings and consider directions for the future development and improvement of our approach.
series	CAADRIA
email
last changed	2022/06/07 07:52

_id	16c7
authors	Li, Andrew I-Kang
year	2000
title	Integrating Symbolic and Spatial Information in Shape Grammars, with an Example from Traditional Chinese Architecture
doi	https://doi.org/10.52842/conf.caadria.2000.245
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. 245-253
summary	Stiny's (1981) formulation of descriptions is applied to building sections and their descriptions found in the twelfth-century Chinese building manual Yingzao fashi.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	71eb
authors	Li, Andrew I-kang, and Tsou, Jin-Yeu
year	1995
title	The rule-based nature of wood frame construction of the Yingzaofashi and the role of virtual modelling in understanding it
source	Computing in architectural research, Proceedings of the International Conference on Chinese Architectural History, 25-40. Hong Kong, 7-10 August 1995
summary	The wood frame construction system of the Yingzao fashi is rule-based. In this system, the text can be understood as rules, construction as the execution of those rules, and the building as the output of the rules. To illustrate, we discuss a three-bay ting tang and some of the rules which govern its overall form and size. This three-bay ting tang is the smallest hall defined in the Yingzao fashi. Virtual models offer a critical advantage over real models and drawings. This type of representation allows us to ask questions which are particularly relevant to the rule-based system. We can execute the rules quickly and thus concentrate on the rules, their output, and the relation between them. We propose some areas of research made possible with virtual modelling. One is a study of curvature as a product of several rules, including shengqi, cejiao, and juzhe.
series	other
email
last changed	2003/04/23 15:50

_id	49fe
authors	Li, Andrew I-Kang
year	1999
title	Expressing Parametric Dependence in Shape Grammars, with an Example from Traditional Chinese Architecture
doi	https://doi.org/10.52842/conf.caadria.1999.265
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. 265-274
summary	Shape grammars traditionally generate one product at a time. This leads to difficulties when dependent parameters are involved. Parallel grammars are proposed as a solution. As an example, a grammar is shown which generates plans according to the 12th-century Chinese building manual Yingzao fashi.
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	2005_523
id	2005_523
authors	Li, Andrew I-Kang
year	2005
title	Thoughts on a Designer-friendly Shape Grammar Interpreter
doi	https://doi.org/10.52842/conf.ecaade.2005.523
source	Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 523-528
summary	Discussions of shape grammar interpreters overlook a fundamental issue: the model of the designer’s work. Such a model would provide guidance for developing an interpreter with an appropriate interface. In this paper, I first propose a model in which the designer’s work is to create and test generative specifications of languages of designs. I call this model designercentered generative design. Then, I examine the characteristics of shape grammar and how they support or impede this model of work. Finally, I discuss the implications for the design of an appropriate shape grammar interpreter. These provide guidelines for implementing such an interpreter for testing.
keywords	Shape Grammar; Interpreter
series	eCAADe
email
last changed	2022/06/07 07:59

_id	98bb
authors	Li, Andrew
year	2001
title	A shape grammar for teaching the architectural style of the Yingzao Fashi
source	Massachusetts Institute of Technology, Department of Architecture
summary	The Yingzaofashi [Building standards] is a Chinese building manual written by Li Jie (d. 1110) and published in 1103. I present a shape grammar for teaching the architectural style - the language of designs - described in this manual. This grammar is distinguished by two objectives, and the technical means used to accomplish them. First, the grammar is for teaching. Usually, the author of a grammar of a style aims to generate all and only the designs in the language. To do this, he not only writes the grammar, but also judges whether the designs it generates are members of the language. In the Yingzaofashi grammar, on the other hand, I want to generate all and more than the designs in the language. It is then the student who evaluates the designs - does this design belong to the language? - and adjusts the grammar accordingly. Thus the student participates actively in defining the language of designs, and learns that style is a human construct. Second, the grammar is designerly. As already observed, most authors of style grammars focus on the language of designs; they do not consider how to structure the user's interaction with the grammar. By contrast, I consider explicitly what the user decides and when he decides it, and organize the grammar accordingly. In other words, I consider process as well as products. The grammar exploits several technical devices for the first time: the design as an n-tuple of drawings, descriptions, and other elements; the generation of descriptions in the n-tuple; and techniques that are made possible by these devices.
series	thesis:PhD
email
last changed	2003/02/12 22:37

_id	caadria2020_167
id	caadria2020_167
authors	Stouffs, Rudi and Li, Andrew
year	2020
title	Learning from Users and their Interaction with a Dual-interface Shape-grammar Implementation
doi	https://doi.org/10.52842/conf.caadria.2020.2.153
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. 153-162
summary	We present a shape grammar implementation with two new characteristics. One is that it is visual and directly manipulable: users draw the shapes and rules in a modeling application. The other characteristic is advanced technical capabilities, such as non-visual attributes and higher-order elements like surfaces. It consists of three components running in Rhinoceros3d. We also report on workshops that introduced the implementation.
keywords	shape grammars; interaction; implementation
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	caadria2009_111
id	caadria2009_111
authors	Biswas, Tajin; Ramesh Krishnamurti and Tsung-Hsien Wang
year	2009
title	Framework for Sustainable Building Design
doi	https://doi.org/10.52842/conf.caadria.2009.043
source	Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 43-52
summary	For sustainable building design, computational tools, mostly in the form of simulations, are employed to determine loads and to predict systems performance typically in terms of energy use. Currently, sustainability, in the building domain, is judged by a rating system. Design choices are validated, by measuring against one. The objective of the framework is to provide a general approach to processing the informational needs of any rating system, by identifying, categorizing and organizing relevant data requirements. Aspects of sustainability that designers deal with intuitively will have a structured guideline and gauge as one selects a rating system of choice.
keywords	Sustainable design: rating system; framework; building information model
series	CAADRIA
email
last changed	2022/06/07 07:52

_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	ijac20097101
id	ijac20097101
authors	Boulaassal, H.; Landes, T.; Grussenmeyer, P.
year	2009
title	Automatic Extraction of Planar Clusters and their Contours on Building Facades Recorded by Terrestrial Laser Scanner
source	International Journal of Architectural Computing vol. 7 - no. 1, 1-20
summary	Since 3D city models need to be realistic not only from a bird's point of view, but also from a pedestrian's point of view, the interest in the generation of 3D façade models is increasing. This paper presents two successive algorithms for automatically segmenting building façades scanned by Terrestrial Laser Scanner (TLS) into planar clusters and extracting their contours. Since majority of façade components are planes, the topic of automatic extraction of planar features has been studied. The RANSAC algorithm has been chosen among numerous methods. It is a robust estimator frequently used to compute model parameters from a dataset containing outliers, as it occurs in TLS data. Nevertheless, the RANSAC algorithm has been improved in order to extract the most significant planar clusters describing the main features composing the building façades. Subsequently, a second algorithm has been developed for extracting the contours of these features. The innovative idea presented in this paper is the efficient way to detect the points composing the contours. In order to evaluate the performances of both algorithms, they have successively been applied on samples with different characteristics, i.e. densities, types of façades and size of architectural details. Finally, a quality evaluation based on the comparison of planar clusters and contours obtained manually has been carried out. The results prove that the proposed algorithms deliver qualitative as well as quantitative satisfactory results and confirm that both algorithms are reliable for the forthcoming 3D modelling of building façades.
series	journal
last changed	2009/06/23 08:07

_id	sigradi2010_197
id	sigradi2010_197
authors	Bustos, L Gabriela I.
year	2010
title	Epistemología compleja de diseño arquitectónico con tecnología digital: primera generación en un taller virtual [Complex epystemology in architecture design with digital technologies: first generation at a virtual workshop]
source	SIGraDi 2010_Proceedings of the 14th Congress of the Iberoamerican Society of Digital Graphics, pp. Bogotá, Colombia, November 17-19, 2010, pp. 197-200
summary	The goal of this paper—part of a doctoral dissertation—is to define a complex epistemology of design that uses digital technology by using Edgar Morin’s study of the theory of complexity to illustrate the concepts of principles and complex paradigms in architectonic design. This paper also establishes the position of digital technology as it is strategically applied in design education in the Architectonic Project I Workshop in the FAD LUZ with participation in Las Americas Virtual Design Studio 2009.
keywords	digital technology, complex epistemology, architectural designs
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	ecaade2009_002
id	ecaade2009_002
authors	Choo, Seung Yeon; Heo, Kyu Souk; Seo, Ji Hyo; Kang, Min Soo
year	2009
title	Augmented Reality- Effective Assistance for Interior Design: Focus on Tangible AR Study
doi	https://doi.org/10.52842/conf.ecaade.2009.649
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference Proceedings / ISBN 978-0-9541183-8-9] Istanbul (Turkey) 16-19 September 2009, pp. 649-656
summary	This article presents an application of Augmented Reality technology for interior design. Plus, an Educational Interior Design Project is reviewed. Along with the dramatic progress of digital technology, virtual information techniques are also required for architectural projects. Thus, the new technology of Augmented Reality offers many advantages for digital design and construction fields. AR is also being considered as a new design approach for interior design. In an AR environment, virtual furniture can be displayed and modified in real-time on the screen, allowing the user to have an interactive experience with the virtual furniture in a real-world environment. Finally, this study proposes a new method for applying AR technology to interior design work, where a user can view virtual furniture and communicate with 3D virtual furniture data using a dynamic and flexible user interface. Plus, all the properties of the virtual furniture can be adjusted using occlusion based interaction methods for a Tangible Augmented Reality.
wos	WOS:000334282200078
keywords	Interior design, augmented reality, ARToolKit, tangible AR, interactive augmented reality
series	eCAADe
email
last changed	2022/06/07 07:56

_id	acadia23_v3_115
id	acadia23_v3_115
authors	Dade-Robertson, Martyn
year	2023
title	Designing with Agential Matter
source	ACADIA 2023: Habits of the Anthropocene: Scarcity and Abundance in a Post-Material Economy [Volume 3: Proceedings of the 43rd Annual Conference for the Association for Computer Aided Design in Architecture (ACADIA) ISBN 979-8-9891764-1-0]. Denver. 26-28 October 2023. edited by A. Crawford, N. Diniz, R. Beckett, J. Vanucchi, M. Swackhamer 24-32.
summary	There have been, very broadly, three eras in the understanding of matter in design. The first, associated with an Aristotelian view of matter as inert and as a receptacle of form, has dominated many of the formalisms in Architectural Design from the Renaissance through to Modernism. The second, sometimes described as “new materialism” (Menges 2012), considers matter as active through design processes which work with materials’ inherent tendencies and capacities. This has led to now-familiar design methods, including Material Based Design Computation (Oxman 2009), and many experiments with active materials such as bilayer metals and hygromorphs. These materials can be programmed to respond to their environments and often take inspiration from biology. I want to suggest that we are entering a new era of understanding matter, which I refer to as the “agential era.”
series	ACADIA
type	keynote
email
last changed	2024/04/17 13:59

_id	caadria2009_082
id	caadria2009_082
authors	Fischer, Thomas
year	2009
title	Reassessing rigour, Re-cycling Research
doi	https://doi.org/10.52842/conf.caadria.2009.791
source	Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 791-795
summary	Circular causality, circular logic and subjectivity are rejected by many scientists while some designers regard them as keys to understanding the design process. With this paper I hope to stimulate a discussion about a largely unquestioned foundation of our field: the form of enquiry. Taking (as others before) this form to be circular, I examine the implications of and for research and education. Ideally, this discussion should inspire a new branch in our field: A philosophy of computeraided design research.
keywords	Control; design; science; logic; causality
series	CAADRIA
email
last changed	2022/06/07 07:51

_id	cf2009_487
id	cf2009_487
authors	Gursel, Ipek; Sariyildiz, Sevil; Stouffs, Rudi and Akin, Ömer
year	2009
title	Contextual ontology support as external knowledge representation for building information modelling
source	T. Tidafi and T. Dorta (eds) Joining Languages, Cultures and Visions: CAADFutures 2009, PUM, 2009, pp. 487- 500
summary	There is an increasing awareness of formal ontologies in knowledge-intense problem domains in the AEC industry. This paper analyzes the general use of ontologies, points to the importance of context-dependent ontology descriptions in AEC, and describes the use and management of multiple (external) ontologies as knowledge management tools within a complex information model of a building performance assessment tool CLIP (Computational support for Lifecycle Integral Performance assessment), previously developed by the authors. The paper provides a discussion of our approach, analysis of the benefits and limitations of external ontologies, suggestions for further development and research areas for the integration of multiple AEC knowledge representations.
keywords	Building lifecycle performance assessment, knowledge modeling, contextual ontologies, product models
series	CAAD Futures
email
last changed	2009/06/08 20:53

_id	ijac20097107
id	ijac20097107
authors	Hadjimitsis, D.G.; Themistocleous, K.; Agapiou, A.; Clayton, C.R.I.
year	2009
title	Monitoring Archaeological Site Landscapes in Cyprus using Multi-temporal Atmospheric Corrected Image Data
source	International Journal of Architectural Computing vol. 7 - no. 1, 121-138
summary	This paper aims to examine the use of satellite remote sensing for monitoring archaeological and more generally cultural heritage sites. For this purpose, multi-temporal data from Landsat 5 TM, Landsat 7 ETM+ and Quickbird images were applied. The paper also discusses the importance of atmospheric correction at the pre-processing step in order to determine true surface reflectance values by removing these effects from satellite images. Atmospheric correction is arguably the most important part of the pre-processing of satellite remotely sensed data and any omission produces erroneous results. The effects of the atmosphere are more severe where dark targets are shown in the satellite image. In the management of cultural heritage sites, since temporal satellite images are required for monitoring purposes, the effect of the atmosphere must be considered. In-situ spectro-radiometric measurements using the GER1500 field spectro-radiometer have been used to assess the reflectance values found after applying the darkest pixel atmospheric correction to the image data. The study area consist the Amathus archaeological site in Limassol and the Nea Paphos archaeological site area located in Paphos district area in Cyprus. Vegetation Index (NDVI) change detection algorithm has been applied to a series of thirteen Landsat TM/ETM+ images of Amathus archaeological site in Limassol. Classification and extraction algorithms have been applied to Landsat TM and Quickbird high resolution images of Nea Paphos archaeological site area.
series	journal
last changed	2009/06/23 08:07

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