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	caadria2013_129
id	caadria2013_129
authors	Sun, Lei; Tomohiro Fukuda, Toshiki Tokuhara and Nobuyoshi Yabuki
year	2013
title	Difference Between a Physical Model and a Virtual Environment as Regards Perception of Scale
doi	https://doi.org/10.52842/conf.caadria.2013.457
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. 457-466
summary	This paper focuses on differences of spatial reasoning capacity observed by using a physical model and a Virtual Reality (VR) system, and specifically emphasizes perception of the scale of space. While respondents view eda physical model and a VR system, a questionnaire was used to objectively evaluate these and establish which was more accurate in conveying object size. As a result, it was acknowledged by the respondents that the physical model performed more accurately and quickly. Subject to further validation, we expect the physical model to offer great utility to develop new digital media in the future.
wos	WOS:000351496100045
keywords	Spatial reasoning capacity, Scale perception, Physical model, Virtual reality, Questionnaire
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	caadria2013_128
id	caadria2013_128
authors	Sun, Lei; Tomohiro Fukuda and Christophe Soulier
year	2013
title	A Synchronous Distributed VR Meeting with Annotation and Discussion Functions
doi	https://doi.org/10.52842/conf.caadria.2013.447
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. 447-456
summary	Owing to cloud computing Virtual Reality (VR), a note PC or tablet with no necessity of high spec GPU can be used for sharing of a 3D virtual space in a synchronous distributed type design meeting. In this paper, in addition to sharing a 3D virtual spacefor a synchronous distributed type design meeting, we developed a prototype system that enables participants to sketch or make annotations and have discussions as well as add viewpoints to them. We applied these functions to evaluate an urban landscape examination. In conclusion, the proposed method was evaluated as being effective and feasible. Operation is limited with one person, and more optional shapes should be preparedin future work.
wos	WOS:000351496100044
keywords	Spatial design, Distributed synchronization, Cloud computing, Annotation, Discussion board
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	caadria2013_061
id	caadria2013_061
authors	Lyu Junchao, Sun Chengyu and Zhao Qi
year	2013
title	Does the Debate on Stress Effect Lead Evacuation Simulation Models to Different Performances?
doi	https://doi.org/10.52842/conf.caadria.2013.179
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. 179-187
summary	There exists a long time debate over the rational state of the evacuees in the evacuation simulation. Sime et al. insisted that the evacuees behave rationally in most cases. Following this argument Arthur and Passini concluded that if a setting works well under normal conditions, it will have a better chance of working well in emergency conditions. Such an argument for rational decision-making makes statistical models, such as Utility Maximizing Model (UMM), acting as proper framework for choice modelling in evacuation. However, on the other side, some people pointed out that there exists panic in the evacuation and bounded rationality theory, represented by pruned Decision Tree Model (DTM), should be adapted in choice modelling instead. Such a debate over stress effect causes hesitations and uncertainties when researchers try to select a proper model framework for their practical simulation. This study compared the performances (prediction accuracies) of the UMM and DTM with the same set of choice data collected in a virtual evacuation experiment. With a similar level of performance on both sides, it is suggested that the on-going debate does NOT bring any difference to the choice modelling in practical evacuation simulation. It is time to improve the performance rather than to continue the debate.
wos	WOS:000351496100018
keywords	vacuation, Architectural cue, Machine learning, Bounded rationality
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	cf2013_256
id	cf2013_256
authors	Lyu, Junchao; Bauke de Vries, and Chengyu Sun
year	2013
title	Towards a Computational Spatial Knowledge Acquisition Model in Architectural Space
source	Global Design and Local Materialization[Proceedings of the 15th International Conference on Computer Aided Architectural Design Futures / ISBN 978-3-642-38973-3] Shanghai, China, July 3-5, 2013, pp. 256-266.
summary	Existing research which is related to spatial knowledge acquisition often shows a limited scope because of the complexity in the cognition process. Research in spatial representation such as space syntax presumes that vision drives movement. This assumption is only true under certain conditions and makes these models valid only in specific scenarios. Research in human spatial cognition field suggests that the spatial information perceived by the individual is not equal to the visual appearance of the space, a straightforward way to represent this cognition process quantitatively is lacking. Research in wayfinding usually assumes a certain degree of familiarity of the environment for the individual, which ignores the fact that the individual sequentially perceives information during wayfinding and the familiarity of the environment changes during the wayfinding process. In this paper, a conceptual spatial knowledge acquisition model for architectural space is presented based on the continuous spatial cognition framework. Three types of local architectural cues are concluded to relate common architectural elements to the continuous spatial cognition framework. With all relations in the proposed conceptual model quantitatively described, a computational model can be developed to avoid the aforementioned limitations in spatial representation models, human spatial cognition models and wayfinding models. In this way, our computational model can assist architects evaluate whether their designed space can be well perceived and understood by the users. It can help enhance the way-finding efficiency and boost the operational efficiency of many public buildings.
keywords	local architectural cues, spatial knowledge, human cognition framework
series	CAAD Futures
email
last changed	2014/03/24 07:08

_id	ecaade2013_272
id	ecaade2013_272
authors	Ozel, Filiz
year	2013
title	SolarPierce: A Solar Path Based Generative System
doi	https://doi.org/10.52842/conf.ecaade.2013.1.127
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 1, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 127-134
summary	In hot and arid climates, limiting solar heat gain while also providing daylight into a structure is a major concern in building design. Building skin that gradually changes in porosity can help limit solar heat gain. Since solar heat gain is primarily a problem during summer, the path the sun follows during summer must be taken into account in determining opening sizes. In this paper, the researcher reports on a study where a generative system called SolarPierce was developed using AutoLISP, the scripting language of AutoCAD, to generate solid geometry for a building skin based on the sun’s path in a given geographical area. The system automatically punches different size openings in a given shell structure where openings facing the sun are the smallest and those fully facing away from the sun are the largest. Opening sizes gradually change from a given minimum to a given maximum depending on how much they face the sun.
wos	WOS:000340635300012
keywords	Solar; generative system; building skin; dome; shell structure.
series	eCAADe
email
last changed	2022/06/07 08:00

_id	cf2013_286
id	cf2013_286
authors	Pang, Lei; Xiaodong Song, and Chengyu Sun
year	2013
title	Computer Aided Simulation for Compact Residential Regulatory Plan
source	Global Design and Local Materialization[Proceedings of the 15th International Conference on Computer Aided Architectural Design Futures / ISBN 978-3-642-38973-3] Shanghai, China, July 3-5, 2013, pp. 286-294.
summary	Residential land development requires compact and intelligent growth in order to conserve land, especially in countries such as China with a large population but little usable land for built environment. This should not be done at the expense of public green space. Living density is an important issue that cannot be avoided in the urbanization process. This research uses Spatial Form Compact as the goal of trying to support the residential regulatory plan. A prototype site has been chosen to optimize the layout. Suppose the type of residential building had been decided and FAR is given as a premise. This method allows the arrangement of residential buildings to be compact and leads to more available space for concentrated green area, for example parks or other facilities. The BL-based method of genetic algorithm and VB program is used for the optimization and calculation of the prototype. The arrangement of residential buildings which is done by computer in this period is only used to explore the relationship between FAR and reasonable building layout. In order to guide the real construction of the building, the site plan should be done further elaborately under the guidance of regulatory plan by the developer and urban planner.
keywords	Compact, Residential area, FAR, Concentrated Green Space
series	CAAD Futures
email
last changed	2014/03/24 07:08

_id	acadia13_327
id	acadia13_327
authors	Raspall, Felix; Imbern, Matías; Choi, William
year	2013
title	Adaptive Tectonic Systems: Parametric Modeling and Digital Fabrication of Precast Roofing Assemblies Toward Site-Specific Design Response
doi	https://doi.org/10.52842/conf.acadia.2013.327
source	ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 327-336
summary	In order to design adaptable systems, the requirements include flexible models to generate a range of alternative configurations, analytical engines to evaluate performance, and well-defined selection criteria to identify suitable options. In most cases, design processes driven by performance concentrate on environmental or structural parameters; fabrication often remains disconnected from the generative process. Nonetheless, as design-to-fabrication methods become more robust, it is possible to extend the digital process to introduce fabrication variables to the definition of the project. The main focus of the research presented in this paper is the development of a digital and material workflow that connects design, structural and climate-specific topics (such as sun lighting and water drainage) toward producing a range of efficient structural and spatial assemblies.A case study serves as the main support for this investigation. Miguel Fisac’s “bones” is a light-weight roof system developed during the 1960’s, which had a very well-calibrated structural, natural-lighting, drainage and construction performance, as well as a highly refined spatial output. The system, despite its intelligence, lacked the flexibility possible today: using digital technologies, it can adapt to a significantly wider range of applications. Using “bones” as a starting point, this research develops a design-to-fabrication workflow that attempts to move forward tools, material systems and processes to enable an adaptable tectonic system.This paper describes the background research, concept, form-finding, construction process, methodology, results and conclusions of the investigation.
keywords	complex systems, parametric design, integrated design and fabrication, mass customization, Miguel Fisac bones, adaptive material system
series	ACADIA
type	Normal Paper
email
last changed	2022/06/07 08:00

_id	cf2013_274
id	cf2013_274
authors	Sun, Chengyu; Bauke de Vries, Wenfeng Bai, and Tuo Hu
year	2013
title	A Comparative Study on Choice Modeling Framework for Evacuation Simulation
source	Global Design and Local Materialization[Proceedings of the 15th International Conference on Computer Aided Architectural Design Futures / ISBN 978-3-642-38973-3] Shanghai, China, July 3-5, 2013, pp. 274-285.
summary	A choice modeling framework for evacuation simulation is needed for a better understanding of the human choice behavior. Facing with the debate between bounded and full rationality, this study builds upon different frameworks and tests them on a same set of choice data collected through virtual evacuation experiment. After comparisons, it is found that there is no significant performance difference between the two kinds of rationality. Additionally, an algorithm comparing pairs of alternatives in choice process performs much better than an algorithm evaluating individual alternatives. An improved utility maximizing model framework and an overall performance decline similar as the forgeting curve are proposed. Finally, it is concluded that the proposed choice model comparing pairs with its great robustness under varying number of alternatives is a proper choice for evacuation simulation.
keywords	bounded rationality, utility maximizing model, performance comparison, number of alternatives
series	CAAD Futures
email
last changed	2014/03/24 07:08

_id	ecaade2013_198
id	ecaade2013_198
authors	Sun, Yimin; Xiong, Lu and Su, Ping
year	2013
title	Grandstand Grammar and its Computer Implementation
doi	https://doi.org/10.52842/conf.ecaade.2013.2.645
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 2, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 645-653
summary	In sports facilities, a grandstand is the structure which provides good sight quality and safety evacuation conditions for the spectators. Grandstand plays important functional and formative roles in sports facilities, and especially in large scale stadia. This paper argues the notion of shape grammar and its computer implementation will solve the difficulties in grandstand design. The authors identify the specific difficulties of grandstand design, then set the aims of the grammatical computer tool. Afterwards the shape grammar of grandstand design is formulated, and a computer tool is developed based on the grammar. At last, the paper discusses the application and usage of the grammar and the computer tool both in early design phase and design development phase with a design practice case study of a large scale stadium.
wos	WOS:000340643600067
keywords	Grandstand design; shape grammar; parametric modelling.
series	eCAADe
email
last changed	2022/06/07 07:56

_id	sigradi2022_51
id	sigradi2022_51
authors	Varsami, Constantina; Tsamis, Alexandros; Logan, Timothy
year	2022
title	Gaming Engine as a Tool for Designing Smart, Interactive, Light-Sculpting Systems
source	Herrera, PC, Dreifuss-Serrano, C, Gómez, P, Arris-Calderon, LF, Critical Appropriations - Proceedings of the XXVI Conference of the Iberoamerican Society of Digital Graphics (SIGraDi 2022), Universidad Peruana de Ciencias Aplicadas, Lima, 7-11 November 2022 , pp. 617–628
summary	Even though interactive (Offermans et.al., 2013), adaptive (Viani et.al., 2017), and self-optimizable (Sun et.al., 2020) lighting systems are becoming readily available, designing system automations, and evaluating their impact on user experience significantly challenges designers. In this paper we demonstrate the use of a gaming engine as a platform for designing, simulating, and evaluating autonomous smart lighting behaviors. We establish the Human - Lighting System Interaction Framework, a computational framework for developing a Light Sculpting Engine and for designing occupant-system interactions. Our results include a. a method for combining in real-time lighting IES profiles into a single ‘combined’ profile - b. algorithms that optimize in real-time, lighting configurations - c. direct glare elimination algorithms, and d. system energy use optimization algorithms. Overall, the evolution from designing static building components to designing interactive systems necessitates the reconsideration of methods and tools that allow user experience and system performance to be tuned by design.
keywords	User Experience, Human-Building Interaction, Smart Lighting, Lighting Simulation, Gaming Engine
series	SIGraDi
email
last changed	2023/05/16 16:56

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