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

PDF papers
References

Hits 1 to 20 of 17763

Reformat results as: short short into frame detailed detailed into frame

_id	caadria2018_018
id	caadria2018_018
authors	Lin, Yuming and Huang, Weixin
year	2018
title	Social Behavior Analysis in Innovation Incubator Based on Wi-Fi Data - A Case Study on Yan Jing Lane Community
doi	https://doi.org/10.52842/conf.caadria.2018.2.197
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. 197-206
summary	Innovation incubator is an emerging kind of office space which focuses on promoting social interaction in the space. From the perspective of environmental behavior, the complex relationship between a particular space form and the social interactions is well worth exploring. Based on Wi-Fi positioning data, this paper examined the spatial and temporal behavior in innovation incubators. Using the interdisciplinary social networks analysis, this paper further analyzed the social interactions in this space, mining out social structures such as gathering and community, and analyzing the relationship between these structures and spaces. The result shows that human behavior in innovation incubators has some interesting characteristics, and the social structures are closely linked with the functional area of innovation incubator. This paper provides a new perspective and introduces interdisciplinary approaches to study the social behaviors in a particular space form, which has great potential in future research.
keywords	environmental behavior study; social behavior analysis; innovation incubator; Wi-Fi IPS; social network
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	sigradi2015_10.250
id	sigradi2015_10.250
authors	Linardi, Ana Beatriz; Ramos, Fernando da Silva; Garotti, Flavio Valverde; Damiani, Vitor
year	2015
title	3D printing as support for arts education for the visually impaired
source	SIGRADI 2015 [Proceedings of the 19th Conference of the Iberoamerican Society of Digital Graphics - vol. 2 - ISBN: 978-85-8039-133-6] Florianópolis, SC, Brasil 23-27 November 2015, pp. 564-568.
summary	This article discusses some methodologies in art education in schools and educational activities in museums. It focuses on accessibility and in the visually impaired rights to access and improve the experiences and repertoire in artistic languages, recognizing the use of new technologies in the field of digital manufacturing as valuable resources for the production of teaching materials with the use of cheaper and accessible technology, which expands the access to cultural institutions and education. Considering that most of the museums art works are not to be touched, 3D printing reproductions in durable low cost plastic present as an alternative for tactile experience. In addition, the photogrammetric 3D scanning process and digital editing allow for the creation of isolated parts and materials originated from the art piece, broadening the pedagogical possibilities of art educators. The production of didactic material for arts teaching, with the use of 3D printed copies (edited or not) originated from 3D scans, may help revealing a more subtle and sophisticated aspect of artistic narrative to the public and the visually impaired.
keywords	Education, Art, 3D Scan, 3D Printing
series	SIGRADI
email
last changed	2016/03/10 09:55

_id	3e01
authors	Linnert, C., Encarnacao, M., Storck, A. and Koch, V.
year	2000
title	Virtual Building Lifecycle - Giving architects access to the future of buildings by visualizing lifecycle data
source	ICCCBE8, Stanford, August 2000
summary	Today’s software for architects and civil engineers is lacking support for the evaluation and improvement of building lifecycles. Facility Management Systems and 4D-CAD try to integrate lifecycle data and make them better accessible, but miss the investigation of the development of the structure itself. Much money is inappropriately spent when materials with different life expectancies are combined in the wrong way and building parts are repaired or replaced too early or too late. With the methods of scientific visualization and real-time 3Dgraphics these deficiencies can be eliminated. The project “Virtual Building Lifecycle” (short VBLC, [W-VBLC]) connects 3D geometrical information to research data such as life expectancy and emissions and to standard database information like prices. The automated visualization of critical points of the structure in the past, presence and future is a huge advantage and helps engineers to improve the duration of the lifecycle and reduce the costs.
keywords	Visualization; lifecycle; virtual building; realtime 3D graphics; architectural database; 4D-CAD; Facility Management
series	other
email
last changed	2003/02/26 18:58

_id	sigradi2009_955
id	sigradi2009_955
authors	Lino, Sulamita Fonseca; Clarisse Martins Vilella; Cezar Augusto Figueredo
year	2009
title	Architecture without ‘a form of use’ [Architecture without "a form of use"]
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	The objective of this paper is to present the methodology used in the Computer graphics applied to architecture class, its potentialities and limitations, and preliminary conclusions. The premises of the course were: to discuss the relation between the architect and the users of architecture, considering that the spaces of the architecture must be projected without “a form of use”, and to teacher the students in the use of software being aimed at the elaboration of spaces in flexible form.
keywords	Architecture; users; flexibility
series	SIGRADI
email
last changed	2016/03/10 09:55

_id	c83b
authors	Lippman, Andrew
year	1980
title	Movie-Maps: An application of the optical videodisk to computer graphics
source	ACM Computer Graphics V. 14 ( 3 ) July, pp. 32-42
summary	Contributed by Jose Ripper Kós (josekos@ufrj.br)
keywords	3D City modeling
series	other
last changed	2001/06/04 20:27

_id	3c37
authors	Lira, Roberto O. and Vidal, Claudia G.
year	2002
title	Evaluación de un instrumento para medir el acceso a equipamientos urbanos: el caso de Concepción [Tool evaluation to measure the access to urban equipment: Concepcion's case]
source	SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 101-104
summary	The paper explains the evaluation of an instrument, based on a GIS to asses the level of proximity of neighborhood locations to urban services and facilities. Starting from a selected set of these, circles are drawn on a city map with radii representing neighborhood access. The areas within the circles are identified as having a certain level of access. Neighborhood locations within the intersection of two or more of these circles are assigned increasing levels of access. The result is an “access map” atthe city level which represents the amount of services or “urban benefits” that a person can get from a specific neighborhood location. This map is then compared to population distribution and analyzed in terms of deficit of services and facilities.
series	SIGRADI
email
last changed	2016/03/10 09:55

_id	caadria2018_103
id	caadria2018_103
authors	Liu, Chang, Zhang, Xu and Nagakura, Takehiko
year	2018
title	PanoFrame: A Lightweight Panoramic Video Editing Tool for Storytelling with Spatial Content
doi	https://doi.org/10.52842/conf.caadria.2018.2.567
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. 567-576
summary	As low-cost panoramic cameras become prevalent among non-professional consumers, an easy-to-use panoramic video editing tool is required for emerging storytellers. This paper proposes a lightweight online panoramic video editing tool for storytelling and explores a method of interpreting the same spatial content from different perspectives with panoramic videos. We conducted three experiments using different groups of participants to test how people create, understand, and interact with a panoramic video story in the proposed tool. The results reveal that this tool enables storytellers to work collaboratively and create multiple narratives from a panoramic video, and the generated panoramic video narratives are also more attractive to audiences than the raw video. This tool has the potential to be an ever-growing crowdsourcing community with a database of multiple narratives and creates opportunities for designers to record, learn about and present architectural and urban space from multiple perspectives.
keywords	Storytelling; panoramic video; spatial content; multiple perspective narrative; crowdsourcing
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	4e6e
authors	Liu, Clive K. and Eastman, Charles M.
year	1981
title	Object Grammars : Language for the Generation of Masonry Designs
source	20 p. ; ill April, 1981. includes bibliography.
summary	Bricks, one of the oldest manufactured building materials, are used extensively in construction. Usually they are built into wall assemblies. In this paper, the construction of traditional masonry designs are investigated. Object grammars are defined for the recursive generation of the 3 dimensional wall designs. Also, the uses of object grammars are discussed
keywords	shape grammars, objects, synthesis, assemblies, architecture, applications
series	CADline
email
last changed	2003/06/02 13:58

_id	c327
authors	Liu, Clive K.
year	1981
title	A Graphic Processor for Computer-Aided Engineering Drawing
source	October, 1981. 7 p
summary	A drafting system whose purpose of is to provide an advanced tool for teaching engineering drawing and as a production tool for designers who regularly produce engineering drawings is described. The graphic processor is part of the system, which incorporates a set of operations that produce and manipulate graphic entities and that require graphic entities as operands. This paper examines the issues of constructing such a processor. Representations are proposed for 2D graphic objects, including points, line segments and segments generated by conic sections; which are predefined data types in the system. The geometric primitive operators take these objects as arguments and produce other graphic objects, and allow users to build up various construction operators and drawings with the same flexibility and generality allowed in, say, descriptive geometry. These operators, which are functions, can be combined as macro expressions that executed by the processor. This environment allows users to define their own macros for various tasks
keywords	CAD, drafting, education, tools
series	CADline
last changed	2003/06/02 13:58

_id	91ea
authors	Liu, J.
year	1997
title	Quality prediction for concrete manufacturing
source	Automation in Construction 5 (6) (1997) pp. 491-499
summary	The problem of extracting information from several sources of information is a very important issue in intelligent systems. In the field of manufacturing concrete--one of the most common construction materials--in Hong Kong, this problem is quite common. There is no direct formulation of concrete mix for specified properties, and all of the mixes are designed by experience and subject to quality inconsistency due to many possible mixing variations. This paper describes an application of neural network techniques to the acquisition of qualitative knowledge during the production of concrete. It shows the capabilities of the developed model for the analysis and representation of production data and prediction of the quality of concrete under different mixing formulations. The simulation results indicate that the neural network's prediction is generally superior to those of conventional methods which often require time-consuming trial mixes for verifying the specified properties before mass production for use.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	caadria2023_114
id	caadria2023_114
authors	Liu, Mengxuan, Yang, Chunxia and Fan, Zhaoxiang
year	2023
title	Behaviour Simulation Optimization Based on the Influence of Microclimate on Crowd Perception – A Case Study of Urban Waterfront Public Space
doi	https://doi.org/10.52842/conf.caadria.2023.2.019
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 19–28
summary	The outdoor behaviour is usually influenced by space and environment. Previous studies on behaviour simulation of outdoor space always focused on the influence of two-dimensional space, but did not take the microclimate perceived into account. However, the microclimate of outdoor public spaces has a strong influence on the activities, which makes the subsequent behaviour simulation results unable to fit well with the reality. Therefore, this research attempts to integrate the influence of space and microclimate perception of crowd into behaviour simulation system. Firstly, we explored the laws of behaviour in terms of seasons, weekdays/weekends, and time slices. Secondly, the multiple linear regression equations of the influence of space and microclimate on behaviour were established. In addition, combining the laws and models with the social force model, a behaviour simulation model in public space under the joint influence of microclimate and space was established. Finally, a comprehensive workflow combining microclimate simulation and behaviour simulation was proposed. The research promoted the application and development of behaviour simulation technology from strong-purpose behaviours to weak-purpose and non-purpose behaviours. Moreover, starting from human behaviour and perception, it provides support for the optimization of urban public space from the bottom up.
keywords	Behaviour Simulation, Microclimate Perception, Outdoor Activities, Public Space
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	caadria2022_238
id	caadria2022_238
authors	Liu, Nuozhi and Koh, Immanuel
year	2022
title	Machine-Reading Places & Spaces: Generative Probabilistic Modelling of Urban Thematic Zones & Contexts
doi	https://doi.org/10.52842/conf.caadria.2022.1.465
source	Jeroen van Ameijde, Nicole Gardner, Kyung Hoon Hyun, Dan Luo, Urvi Sheth (eds.), POST-CARBON - Proceedings of the 27th CAADRIA Conference, Sydney, 9-15 April 2022, pp. 465-474
summary	In this paper, a "place" is conceptualised as a composition of dynamic socioeconomic activities and collective perceptions. We apply generative probabilistic modelling to explore urban contextual semantics. By analogy to sorting documents into different topics, this research retrieves data embedding for each urban regions and classify them with thematic zones. Using Singapore as a case study, topic modelling is applied to retrieve perceptual and functional thematic zones from Instagram and TripAdvisor respectively. A subsequent analysis shows strong correlations among certain regions with functional and perceptual consistency. In addition, with our proposed uniqueness and diversity indices, a strong negative correlation at 0.82 is found, suggesting that a region could be more unique if the functions tend to be dominated by certain types of functional and perceptual thematic zones.
keywords	Machine Learning, Natural Language Processing, Generative Probabilistic Models, Urban Data Modelling, Thematic Zones, Topic Modelling, SDG 11
series	CAADRIA
email
last changed	2022/07/22 07:34

_id	caadria2022_464
id	caadria2022_464
authors	Liu, Xinyu and van Ameijde, Jeroen
year	2022
title	Data-driven Research on Street Environmental Qualities and Vitality Using GIS Mapping and Machine Learning, a Case Study of Ma On Shan, Hong Kong
doi	https://doi.org/10.52842/conf.caadria.2022.1.485
source	Jeroen van Ameijde, Nicole Gardner, Kyung Hoon Hyun, Dan Luo, Urvi Sheth (eds.), POST-CARBON - Proceedings of the 27th CAADRIA Conference, Sydney, 9-15 April 2022, pp. 485-494
summary	In a post-carbon framework, data-driven methods can be used to assess the environmental quality and sustainability of urban streetscape. Streets are an important part of people's daily lives and provide places for social interaction. Therefore, in this study, the relationship between street quality and street vibrancy is measured using the new town of Ma On Shan, Hong Kong as a study area. Firstly, machine learning was used to identify the physical features of streets through geographic information collection and streetscape image acquisition. Secondly, previous measurement algorithms are combined to calculate the greenness, walkability, safety, imageability, enclosure, and complexity of streets. Thirdly, secondary calculations and visualisations were carried out on a Geographic Information System (GIS) platform to observe the current distribution of street qualities. Finally, the relationship between street quality and vibrancy was analysed using SPSS statistical analysis software. The results show that walkability has a positive effect on street vitality, whereas safety and complexity have a negative effect on street vitality. This study demonstrates how the quantitative assessment of urban street environments can be used as a reference for building a green, low-carbon, healthy, and walkable city.
keywords	Street Quality, Geographic Information Systems, Machine Learning, Image Segmentation, SDG 11
series	CAADRIA
email
last changed	2022/07/22 07:34

_id	caadria2023_129
id	caadria2023_129
authors	Liu, Yisi, Webb, Nick and Brown, Andre
year	2023
title	The Re-creation of a Demolished House Based on Collective Memory
doi	https://doi.org/10.52842/conf.caadria.2023.1.363
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 363–372
summary	This paper investigates how the collective memory of an architectural setting can be captured, re-created, and re-experienced. The method uses a workflow to create a Virtual Environment (VE) from diverse sources in an interpretational and iterative process. A case study was implemented to test this workflow, focusing on the re-creation of a now demolished family home based on information from multiple generations of a family. The workflow's main output is a VE in which the family members can re-experience the house and give continuous feedback. The essence of this workflow is the constant negotiation between remembered space in memory and its digital interpretation in the VE. The output was assessed and refined according to the users' feedback, which is used to loop back to specific stages in the workflow. This process revealed undisclosed histories and enhanced our understanding of this demolished site and its wider context. Moreover, the workflow provides a model for studying conceptually recreated spaces based on subjective sources and provides a user-centred experience in the VE.
keywords	Demolished houses, Collective memory, Interpretation, Virtual environment, User-centred
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	ijac20031109
id	ijac20031109
authors	Liu, Yu-Tung; Shen-Kai, Tang
year	2003
title	Space, Place and Digital Media:Towards a Better Simulation of a City that has now Disappeared
source	International Journal of Architectural Computing vol. 1 - no. 1
summary	Digital media enable researchers and designers to derive better informed processes in solving problems of historical architectural restoration and virtual archaeology. However, recently insufficiencies have been found in the main technologies often applied in such techniques, such as 3D modeling, high-quality rendering and animation. Given these problems, this paper attempts to explore a digital reconstruction procedure for historical architecture and cities using 3D scanning, Virtual Reality cave technology and motion capture technology. This case study is based on a collaborative project in conjunction with the National Palace Museum, Taiwan, and the China Times, Taiwan.The five steps involved in this project include data collection and analysis, three-dimensional digital inferences, digital reconstruction of static and moving models, scenario dynamics (by integrating the two kinds of models), and visual-spatial immersion using a VR-cave representation. Finally, a preliminary digital reconstruction procedure is presented.
series	journal
email
more	http://www.multi-science.co.uk/ijac.htm
last changed	2007/03/04 07:08

_id	caadria2017_051
id	caadria2017_051
authors	Liu, Yuezhong and Stouffs, Rudi
year	2017
title	Familiar and Unfamiliar Data Sets in Sustainable Urban Planning
doi	https://doi.org/10.52842/conf.caadria.2017.705
source	P. Janssen, P. Loh, A. Raonic, M. A. Schnabel (eds.), Protocols, Flows, and Glitches - Proceedings of the 22nd CAADRIA Conference, Xi'an Jiaotong-Liverpool University, Suzhou, China, 5-8 April 2017, pp. 705-714
summary	Achieving energy efficient urban planning requires a multi-disciplinary planning approach. The huge increase in data from sensors and simulations does not help to reduce the burden of planners. On the contrary, unfamiliar multi-disciplinary data sets can bring planners into a hopeless tangle. This paper applies semi-supervised learning methods to address such planning data issues. A case study is used to demonstrate the proposed method with respect to three performance issues: solar heat gains, natural ventilation and daylight. The result shows that the method addressing both familiar and unfamiliar data has the ability to guide the planner during the planning process.
keywords	energy performance; S3VM; decision tree; familiar and unfamiliar.
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	ecaade2020_054
id	ecaade2020_054
authors	Liu, Yuezhong, Stouffs, Rudi and Theng, Yin Leng
year	2020
title	Development of Synthetic Patient Data to Support Urban Planning for Public Health
doi	https://doi.org/10.52842/conf.ecaade.2020.1.315
source	Werner, L and Koering, D (eds.), Anthropologic: Architecture and Fabrication in the cognitive age - Proceedings of the 38th eCAADe Conference - Volume 1, TU Berlin, Berlin, Germany, 16-18 September 2020, pp. 315-322
summary	Healthy urban planning is about planning for people, considering the needs of people and communities during the planning process and the implications of decisions for human health and well-being. However, access to real electronic health record (EHR) data is hindered by legal, privacy, security, and intellectual property restrictions. The lack of freely distributable health records has become an important issue for healthy urban planning. This research develops a source of synthetic electronic health records based on reviewed and meta-analysed evidence on the association between built environmental characteristics related to lifestyle chronic diseases. This research uses Type 2 Diabetes Mellitus (T2DM) as health for proof of concept. The results roughly approximate age and gender groups at diagnosis curves (R2 = 0.876), and correctly generated more than 90% of patients for the all age group in Singapore. As a summary, these pilot validated synthetic records could be used as a risk-free (no privacy & security issues) data for supporting healthy urban planning.
keywords	synthetic patient; urban planning; computer simulation; Type 2 Diabetes Mellitus; GIS
series	eCAADe
email
last changed	2022/06/07 07:59

_id	caadria2023_100
id	caadria2023_100
authors	Liu, Yuxuan and Xu, Wenzhao
year	2023
title	A Data-Driven Approach for Interpreting Human Preference in Urban Public Spaces: A Case Study in London
doi	https://doi.org/10.52842/conf.caadria.2023.1.625
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 625–634
summary	Sound, an often easily overlooked part of the urban composition, plays a crucial role in urban studies regarding how people perceive urban acoustic environments. Influenced by variable natural and artificial acoustic elements, the multi-level nature of urban soundscapes reflects multidimensional urban characteristics and thus demands thorough investigations. Unravelling the acoustic complexity and understanding its influence on public spaces' popularity will benefit the interpretation of urban soundscapes and help to build a more vibrant public life. In this paper, we utilize DepthMapX and QGIS to select specimen sites for further investigation. The behavioural analysis is performed through principle components analysis (PCA) and K-Means analysis based on data obtained within the city of London. This project seeks to develop digital strategies to investigate the relationship between urban public spaces and their soundscapes: to infer the correlation between people's emotions and the richness of urban environments. Through integrating machine-learning analytic approaches into visualizing how citizens perceive or experience the urban sound environment, our research aims to positively assist and inform urban practitioners in planning and designing more benign acoustic environments.
keywords	Urban Soundscape, Data-driven Analysis, Machine Learning, Multidimensional Data visualization
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	4744
authors	Livingstone, Margaret and Hubel, David
year	1988
title	Segregation of Form, Color, Movement, and Depth : Anatomy, Physiology, and Perception
source	Science. May, 1988. vol. 240: pp. 740-750 : ill. some col. includes bibliography
summary	Anatomical and physiological observations in monkeys indicate that the primate visual system consists of several separate and independent subdivisions that analyze different aspects of the same retinal image: cells in cortical visual areas 1 and 2 and higher visual areas are segregated into three interdigitating subdivisions that differ in their selectivity for color, stereopsis, movement, and orientation. The pathways selective for form and color seem to be derived mainly from the parvocellular geniculate subdivisions, the depth- and movement-selective components from the magnocellular. At lower levels, in the retina and in the geniculate, cells in these two subdivisions differ in their color selectivity, contrast sensitivity, temporal properties, and spatial resolution. These major differences in the properties of cells at lower levels in each of the subdivisions led to the prediction that different visual functions, such as color, depth, movement, and form perception, should exhibit corresponding differences. Human perceptual experiments are remarkably consistent with these predictions. Moreover, perceptual experiments can be designed to ask which subdivisions of the system are responsible for particular visual abilities, such as figure/ground discrimination or perception of depth from perspective or relative movement-functions that might be difficult to deduce from single-cell response properties
keywords	color, theory, perception
series	CADline
last changed	2003/06/02 10:24

_id	sigradi2003_055
id	sigradi2003_055
authors	Llavaneras, Gustavo J.
year	2003
title	Arquitectura virtual como proyecto de titulación: Una experiencia completa (Virtual Architecture as a Graduating Project: A complete experience)
source	SIGraDi 2003 - [Proceedings of the 7th Iberoamerican Congress of Digital Graphics] Rosario Argentina 5-7 november 2003
summary	In this paper we define what we understand as Titulation Project, study the various ways to attack such a project in the area of Computer Graphics Applied to Architecture, describing the experience we did with a group of students who worked on their Titulation Project in this area. Three different designs for The Virtual Center for Venezuelan Digital Art are presented as a result of this experience, as well as conclussions on the whole two-semesters experience.
series	SIGRADI
email
last changed	2016/03/10 09:55

For more results click below: