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	ddss2006-hb-137
id	DDSS2006-HB-137
authors	Chiung-Hui Chen and Mao-Lin Chiu
year	2006
title	SCALE - A street case library for environmental design with agent interfaces
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) 2006, Innovations in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Springer, ISBN-10: 1-4020-5059-3, ISBN-13: 978-1-4020-5059-6, p. 137-150
summary	Urban space provides a context for human interaction. Recently, urban planning has largely placed the user at the street as the centre of infrastructural design, with significant implications for the perceived attractiveness of user environments. However, visual observation is often difficult for verifying planning goals. The simulation of pedestrian behaviour is important for physical planning, but such research is scarce. In this study, we adopt an empirical approach for generating reactive path following. Further, we implement scenarios as computer scripts with agent-based interfaces to identify navigational patterns. Moreover, we built a hierarchy of individual behavioral models and define a behavior production system to control the agent. Key attributes of streets such as rest space, utilities, landmarks, and buildings have space tags as identifiers to associate streets with related activities.
keywords	Agent interface, Behaviour, Simulator, Street design
series	DDSS
last changed	2006/08/29 12:55

_id	ddss2006-pb-359
id	DDSS2006-PB-359
authors	Sooyeon Han, Jinwon Choi, and Jumphon Lertlakkhanakul
year	2006
title	Developing a Virtual Test-Bed to Design Human-Centered Ubiquitous Space
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) 2006, Progress in Design & Decision Support Systems in Architecture and Urban Planning, Eindhoven: Eindhoven University of Technology, ISBN-10: 90-386-1756-9, ISBN-13: 978-90-386-1756-5, p. 359-369
summary	Future space is currently getting a great deal of attention to apply ubiquitous computing technology. To design these spaces, the need to make a physical test-bed, a real building model, is essential for human-centered design. However building a physical test-bed generally is economically expensive and even if the test-bed could be settled, it must be carefully designed before it is built. In this paper, we suggest a virtual smart test-bed, called 'V-PlaceLab'. This system allows not only to research a human behavior with the aid of computer simulation on a virtual environment, but also to design a human-centered ubiquitous space mentioned above.
keywords	Design Support Systems, Human-centered design, Simulation, Test-bed, Ubiquitous space, Virtual reality
series	DDSS
type	normal paper
last changed	2006/09/19 19:56

_id	sigradi2006_e082d
id	sigradi2006_e082d
authors	Beros Contreras, Christian
year	2006
title	Space, Events and Urban Performance
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 333-336
summary	This report investigates different kinds of Urban Performance in Thames Path, South Bank of Thames River. Urban Performance is defined here as the expression or manifestation of different social groups in the city space regarding the appropriation of a specific place for its spatial practices. The Urban Performances are intrinsic to the cultural expression of the city and revealed through the spatial experience of both performer and spectator. The aim of this paper is to shed light on different kind of urban performances and how are they linked to spatial and syntactic properties of space. This topic is intrinsic in the space syntax theory due its fundamental relation between spatiality and human activity. The research method used were, direct observations by static snapshots and traces (related with human movement) and a survey of potential attractors, active facades and path widths. The results were overlaid with spatial analysis in terms of performers isovists and syntactic analysis through visibility graph. The findings show a strong relation between performers’ use of space and visibility in the urban area, and a high influence of the cultural attractions and public services that works as movement attractors. The discussion is developed through the research findings and theories of spatial experience putting forward varied interpretations related with the research topic and the selected site. The report concludes that the urban performances in Thames path is determined by the human co presence in the space, due to this strategic points chosen along the path by the performers are strongly related with the visual connections in the system. Furthermore, the attractors play an important role shaping the spatial experience and urban character of the studied area.
keywords	Urban Performance; Space Syntax; Isovists
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	2006_738
id	2006_738
authors	Chen, Chiung-Hui and Mao-Lin Chiu
year	2006
title	Space Tags and User Behavior Modeling - Applying agents to detect navigational patterns in urban streets
source	Communicating Space(s) [24th eCAADe Conference Proceedings / ISBN 0-9541183-5-9] Volos (Greece) 6-9 September 2006, pp. 738-745
doi	https://doi.org/10.52842/conf.ecaade.2006.738
summary	Urban pedestrian studies on navigation have been conducted for developing applications to ease the task of exploring in a virtual environment. As navigation in virtual environments is evidently difficult and as many virtual worlds have been designed to be used by untrained visitors that explore the environment, navigational supports are critically needed. This study is aimed to collect information about the user needs in order to build a model of user preference and produce simulative scenarios that can reveal the navigational patterns related to street design. The study is based on the attention theory for studying people who are socially interacting with street activities and furniture within designated areas. Furthermore, the study attempts to apply agent interface develop a prototype system with space tags. Finally, the system and its applications, and major findings of these applications are reported
keywords	space tags; navigational patterns; street; agent interface; user behavior
series	eCAADe
email
last changed	2022/06/07 07:55

_id	caadria2006_363
id	caadria2006_363
authors	HSIAO-CHEN YOU, SHANG-CHIA CHIOU, YI-SHIN DENG
year	2006
title	DESIGN BY ACTIONS: An Affordance-based Modeling System in Spatial Design
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 363-369
doi	https://doi.org/10.52842/conf.caadria.2006.x.p3k
summary	From the viewpoint of interaction design, Gibson's affordance concept is interpreted as an emergent action possibility of the physical human-environment-system, which consists of three key components: the user, the environment, and the possible actions. It could help user to perform the suitable action within an artificial environment. This study aims to develop a formal description of affordance in spatial design. Using the formal description as groundwork, an affordance-based modeling system is then proposed to facilitate its further implementation in design and elucidate the new role of users and designers in spatial design. A simplified sink area design is used as an example to illustrate how this affordance-based modeling system works. For users of different conditions, different spatial arrangements in design will affect the performance and users’ behavior as well. This study demonstrates how design by action can be achieved, and then simulates the action sequence of different design solutions to evaluate the system performance.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	caadria2006_151
id	caadria2006_151
authors	IH-CHENG LAI
year	2006
title	AGENT COMMUNICATION FOR ROLE PLAYING IN THE IDEA ASSOCIATION PROCESS
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 151-160
doi	https://doi.org/10.52842/conf.caadria.2006.x.t3c
summary	This paper proposes a framework for the specification of communication mechanisms that regulates interactions among agents participating in role playing in the idea association process. Since agents process a sort of human-like behavior, our approach is made taking as reference human communication characteristics through using role playing as metaphor. Therefore, we first analyze the characteristics of human communication, deriving role playing for linking ideas in the human world. By integrating with ACL mechanisms, we propose a framework to express communication mechanisms for exchanging message in a multi-agent framework called DIM-2. Finally, the framework is evaluated through an experiment. Also its computational feasibility of a support system for the distributed interactions is discussed in this paper.
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	eaea2005_151
id	eaea2005_151
authors	Ohno, Ruyzo
year	2006
title	Seat preference in public squares and distribution of the surrounding people: An examination of the validity of using visual simulation
source	Motion, E-Motion and Urban Space [Proceedings of the 7th European Architectural Endoscopy Association Conference / ISBN-10: 3-00-019070-8 - ISBN-13: 978-3-00-019070-4], pp. 151-163
summary	Public squares are shared by people who use them for various purposes. When people choose seats in a square, they unconsciously evaluate not only the physical characteristics of the space but also the distribution of others already present (Hall, 1966; Sommer, 1969; Whyte, 1988). Knowing the hidden rules of this behaviour will be important in designing squares that remain comfortable even in crowded situations. Most past studies of seat choice preference have reported on statistical tendencies derived from observations of subject behavior in actually existing sites (i.e., Abe, 1997; Imai, 1999; Kawamoto, 2003). However, they provide no clear theoretical model for explaining the basic mechanisms regulating such behaviour. The present study conducts a series of experiments in both real and virtual settings in order to extract quantitative relationships between subjects’ seat preferences and the presence of nearby strangers and to clarify what factors influence their seat choices.
series	EAEA
type	normal paper
email
more	http://info.tuwien.ac.at/eaea
last changed	2008/04/29 20:46

_id	caadria2006_349
id	caadria2006_349
authors	PH. WAN, D. HOLSTIUS, J. KEMBEL, A. HURST, J. FORLIZZI
year	2006
title	USER AWARENESS AND USER BEHAVIOR IN A SHARED SPACE: Using plant as the information display
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 349-354
doi	https://doi.org/10.52842/conf.caadria.2006.x.b2x
summary	People are aware of objects in physical spaces to which they may act responsively. We are interested in human behavioral changes in the presence of reactive displays in shared environments. In a limited 2-week field study, using plants (both natural and artificial) as reactive displays, we observed human trash disposal/recycling behavior. We found that there is a significant increase in recycling (p=0.08) when there are reactive display with natural plants. We also noticed increase in recycling with displays with artificial plants. These findings suggest that people can and do alter their behavior in shared environments, and that such behavioral changes can be effected by the use of reactive/responsive information displays.
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	sigradi2006_c193d
id	sigradi2006_c193d
authors	Ruiz-Tagle, Javier
year	2006
title	Modelos de Simulación Urbana (Experiencia a Partir de un Juego de Estrategia) [Urban simulation models (experience throughout a strategic game)]
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 386-391
summary	The experience considers the achievement of a course for architecture and geography. The research penetrates into an experimentation based on the Systems Theory and the Systems Dynamics, which helps to understand the structure and the dynamics of the city, as a set of complex systems. SimCity, a game of strategy that allows to design, to plan, and to manage the dynamics of a city, is used as software. The experience had as principal target, tackling formulae of didactic experimentation, which integrate, by the application of networks and systems, the complex relations that configures the city. The methodology had theoretical and experimental stages, plus the achievement of a simulation exercise. The experience had very good reception, as method for learning and for research, despite the strange that it seemed in the beginning. Also, it generated a big aptitude to realize good research questions, since the behavior of many variables was learned to visualize simultaneously.
series	SIGRADI
email
last changed	2016/03/10 09:59

_id	ddss2006-hb-121
id	DDSS2006-HB-121
authors	Wei Zhu and Harry Timmermans
year	2006
title	Exploring Heuristics Underlying Pedestrian Shopping Decision Processes - An application of gene expression programming
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) 2006, Innovations in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Springer, ISBN-10: 1-4020-5059-3, ISBN-13: 978-1-4020-5059-6, p. 121-136
summary	Most analytical pedestrian behavior researches use utility-maximizing models and have paid less attention to models based on alternative behavioral theories such as bounded rationality. Consequently, there is a lack of deeper explorations into the decision processes of pedestrians. This lack of such alternative models may also be the result of inappropriate methods to estimate such models. For this reason, the paper first introduces a modeling platform GEPAT which has the ability to estimate parallel functions using a multi-gene-sectional chromosome structure and to facilitate building models using processors emulating simple decision mechanisms. The going-home decision of pedestrians in Wang Fujing Street is taken as an example to illustrate the use of GEPAT. The most important conclusion from a comparison of the MNL, hard cut-off, soft cut-off and hybrid model is that the satisficing heuristic fits better to the problem structure, at least in this case, than the utility-maximizing rule does. This example also shows the flexibility of GEPAT as a modeling toolbox and the power of estimating complex models.
keywords	GEPAT, Decision process, Bounded rationality, Satisficing heuristic, Utility maximization, Model comparison
series	DDSS
last changed	2006/08/29 12:55

_id	acadia06_483
id	acadia06_483
authors	Yan, Wei
year	2006
title	Integrating Video Tracking and Virtual Reality in Environmental Behavior Study
source	Synthetic Landscapes [Proceedings of the 25th Annual Conference of the Association for Computer-Aided Design in Architecture] pp. 483-488
doi	https://doi.org/10.52842/conf.acadia.2006.483
summary	One of the essential considerations in architectural design is how people use the built environments. Adequate study of environmental behavior can reveal significant information about that use. This research suggests applying new computing technologies to enhance environmental behavior study, in terms of effectiveness and efficiency. Specifically, this project will develop an integrated system of automatic video tracking and video-quality virtual reality. The integrated system will provide designers and behavioral scientists with substantial statistical measurements of end user behavior patterns. Furthermore it will enable them to walk through the virtual reality of the environments and interactively observe details of the behaviors from various viewpoints. Thus, this project can help obtain behavior data in different levels of details, and in a structured and planned way that can facilitate analysis of the data with maximum automation. The major significance of this project is an introduction of a rigorous new methodology into environmental behavior study to enhance first-person observation with state-of-the-art computing technologies. This research will be a novel application of virtual reality in environmental behavior study. We expect that it will fundamentally advance the methods behavioral scientists use to study human environmental behavior, and the ways architects evaluate architectural design in terms of human behavior.
series	ACADIA
email
last changed	2022/06/07 07:57

_id	sigradi2006_e165b
id	sigradi2006_e165b
authors	Angulo, Antonieta
year	2006
title	Optimization in the Balance between the Production Effort of E-learning Tutorials and their related Learning Outcome
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 122-126
summary	This paper provides evidence on the level of media richness that may be cost effective in the development of e-learning tutorials for teaching and learning computer visualization techniques. For such a purpose the author provides an analysis of low-cost / high-impact media rich products, the effort and cost required in their development and the measurement of related learning outcomes. Circa twenty years of R&D of multimedia and hypermedia applications for instruction have demonstrated the benefits of communicating relevant information to learners using engaging media. Based on this evidence, this paper assumes that due to the cognitive style of design students, the instructional packages for learning computer techniques for design visualization that are rich in media content, tend to be more effective. Available visualization technologies make the development of e-learning tutorials feasible and apparently the logical way to implement our instructional packages. However the question in the development of e-learning tutorials becomes a more strategic one when we are called to reach a level of optimization between producing a package with a basic standard, namely; text & still-graphic based tutorials, or a state-of-the-art package that is based on video demonstrations (more than enough?) that can accommodate the students’ learning requirements and also our production costs. The costs include the human resources (instructor, producers, assistants and others) and the material resources (hardware and software, copies, and others) involved in the creation of the e-learning tutorials. The key question is: What is good enough, and what is clearly superfluous? In order to confirm our hypothesis and propose a relevant balance between media richness and learning effectiveness, this paper describes an experiment in the use of two different levels of media richness as used to deliver instructions on the production of computer animations for design visualization. The students recruited for this experiment were fairly familiarized with the use of 3D modeling concepts and software, but had no previous knowledge of the techniques included in the tutorials; in specific; camera animation procedures. The students, separated in two groups, used one of the two methods; then they proceeded to apply their newly acquired skills in the production of an animation without using the help of any external means. The assessment of results was based on the quality of the final product and the students’ performance in the recall of the production procedures. Finally an interview with the students was conducted on their perception of what was accomplished from a metacognitive point of view. The results were processed in order to establish comparisons between the different levels of achievement and the students’ metacognitive assessment of learning. These results have helped us to create a clear set of recommendations for the production of e-learning tutorials and their conditions for implementation. The most beneficial characteristics of the two tested methods in relation to type of information, choice of media, method of information delivery, flexibility of production/editorial tools,! and overall cost of production, will be transferred into the development of a more refined product to be tested at larger scale.
keywords	e-learning tutorials; media richness; learning effectiveness; cognitive style; computer visualization techniques
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	sigradi2006_e159b
id	sigradi2006_e159b
authors	Barrow, Larry
year	2006
title	Digital Design Pedagogy - Basic Design - CADCAM Space Box Exploration
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 127-130
summary	This proposed paper will highlight the work of a “pre-architecture” graduate student’s work produced in a “Digital Design II” course in Spring 06. This student has a bachelor’s degree in Architectural Technologies and hopes to attend a “professional” degree program in architecture after completing our Master of Science degree program. The student entered our “pre / post-professional” graduate program as a means of learning more about design, technology and architecture. This provided a rare opportunity to do “research” in the area of digital technology in the early formative phases of a new architecture / design students development. The student chose to study “shadows” as a means of design inquiry. The primary focus of the work was the study of various “4” x 4” x 4” “space-cubes.” The student was given various “design” constraints, and “transformative” operations for the study of positive-negative space relationships, light+shadows, and surface as a means of gaining in-sight to form. The CADCAM tools proved to be empowering for the student’s exploration and learning. With the recent emergence of both more user-friendly hardware and software, we are seeing a paradigm shift in design “ideation.” This is attributed to the evolving human-computer-interface (HCI) that now allows a fluidic means of creative design ideation, digital representation and physical making. Computing technology is now infusing early conceptual design ideation and allowing designers, and form, to follow their ideas. The argument will be supported with primary evidence generated in our pedagogy and research that has shown the visualization and representational power of emerging 2D and 3D CADCAM tools. This paper will analyze the basic “digital design” process used by the writer’s student. Architectural form concepts, heretofore, impossible to model and represent, are now possible due to CADCAM. Emerging designers are integrating “digital thinking” in their fundamental conceptualization of form. These creative free-forms are only feasible for translation to tectonic form using digital design-make techniques. CADCAM tools are empowering designers for form exploration and design creativity. Current computing technology is now infusing the creative design process; the computer is becoming a design “partner” with the designer and is changing form and architecture; thus, we are now seeing unprecedented design-make creativity in architecture.
keywords	Basic Design; CADCAM; Digital Design; Virtual 3D Models; Physical 3D Printed Models
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	eaea2005_000
id	eaea2005_000
authors	Dechène, Sigrun und Manfred Walz (Eds.)
year	2006
title	Motion, E-Motion and Urban Space
source	Proceedings of the 7th European Architectural Endoscopy Association Conference / ISBN-10: 3-00-019070-8 - ISBN-13: 978-3-00-019070-4, 260 p.
summary	Simulating the development and the image of architecture and urban design means to show how the environment of the future and the living conditions could develop. At the same time it is part of our task to explain our work to local people and to the public and to passion skills in methods, instruments and knowledge in planning to the next generation of architects, planners and last but not least to discuss and to renew them once more for ourselves. Our aim was also to reflect what we have done since starting the look through the key-hole of endoscopy. Meanwhile this look has been completed since the beginnings in 1993 much more by computer and monitor. It is not the question to take the endoscope or the computer as a methodical and instrumental approach. Nowadays we normally decide to take the endoscope and the computer. In preparing the conference and the workshop we thought that this should now also be the moment not only to inform each other and the participants on methods, tools and best practices in simulating and designing the environment but also to focus on the social and human consequences of perception, movement and use the present urban spaces and the urban space in future. So we proposed the theme “MOTION, E-MOTION and URBAN SPACE” and we invited a scientific expert in experimental psychology to give us some serious reflections and one or another hint on our research themes and methods. The contributions and discussions in the conference showed that the proposal has not only been accepted but has also been completed and enriched especially concerning the theme urban space, it’s processes of usage and it‘s atmosphere. Also in the themes of endoscopy and the research on modelling urban spaces and architecture, meanwhile nearly “traditional” ones, remarkable results were presented and discussed. A very important point of contributions and the following discussions was how to present our subjects to the interested public and to improve our own internal exchange. An object could be to enforce the research tasks in researching together even more.
series	EAEA
email
more	http://info.tuwien.ac.at/eaea
last changed	2008/04/29 20:46

_id	caadria2009_046
id	caadria2009_046
authors	Haeusler, Matthias Hank
year	2009
title	Modulations of Voxel Surfaces Through Emotional Expressions to Generate A Feedback Loop Between Private Mood and Public Image
source	Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 173-182
doi	https://doi.org/10.52842/conf.caadria.2009.173
summary	My proposal is an investigation into the perceptual boundaries between human and architectural expression. It asks how architecture can creatively adopt human expression by using the emotions ‘displayed’ on the ‘surface face’ as a generator for displaying a surface on a voxel façade to achieve a cross-connecting perceptual change with modulations through emotion (Massumi, 2006). Through voxel facades the public with their expressed emotions will be included in the decision process of defining space, by expressing our innermost feelings through an architectural medium. Thus emotions of the individual have a platform and can be conveyed indirectly to the public, and in turn open up discussions about the state of the community through the state of the façade. An alliance of media and place in an urban context can be achieved and created, with the participation of its inhabitants, along with a new perception of how media and architecture can together shape and inform spatial relations for a feedback loop between private mood and public image.
keywords	Voxel façade; simulation; human-environment interaction; dynamic space
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	ddss2006-hb-309
id	DDSS2006-HB-309
authors	John S. Gero and Udo Kannengiesser
year	2006
title	A Framework for Situated Design Optimization
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) 2006, Innovations in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Springer, ISBN-10: 1-4020-5059-3, ISBN-13: 978-1-4020-5059-6, p. 309-324
summary	This paper presents a framework for situated design optimization that expands the traditional view of design optimization. It is based on the notion of interaction providing the potential for modifications of various aspects of the optimization process: problem formulation, the optimization tool, the designer and ultimately the result. In contrast to other approaches, these modifications can drive further interactions within the same optimization process. We use parts of the situated function-behaviour-structure (FBS) framework as an ontological basis to describe the effects of intertwined interactions and modifications on the state space of ongoing optimization processes.
keywords	Design optimization, Situatedness
series	DDSS
last changed	2006/08/29 12:55

_id	ddss2006-pb-35
id	DDSS2006-PB-35
authors	M.C.G. te Brömmelstroet
year	2006
title	Properly Equip Planners, Instead of Just Manning Equipment - A first step in a user-oriented PSS development approach as support for the integration of land use and transport planning
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) 2006, Progress in Design & Decision Support Systems in Architecture and Urban Planning, Eindhoven: Eindhoven University of Technology, ISBN-10: 90-386-1756-9, ISBN-13: 978-90-386-1756-5, p. 35-50
summary	There is a growing need for planning support in planning practice, especially in land use and transport integration. Recent studies have shown that instruments that provide such are seldom implemented. Building on recommendations of those studies, this paper explores how to develop a planning support system (PSS) for this specific field of planning and shows some preliminary results of the first steps towards such a PSS. An qualitative assessment on the strengths and weaknesses of two recently developed instruments that share this goal; the VPR and the SDS+STE. Due to time constraints, the focus is on the background and framework of the study.
keywords	Land use and transport, PSS, computer-aided planning, participatory design
series	DDSS
last changed	2006/08/29 12:55

_id	ddss2006-hb-167
id	DDSS2006-HB-167
authors	Michael Balmer and Kai Nagel
year	2006
title	Shape Morphing of Intersection Layouts Using Curb Side Oriented Driver Simulation
source	Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) 2006, Innovations in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Springer, ISBN-10: 1-4020-5059-3, ISBN-13: 978-1-4020-5059-6, p. 167-183
summary	In a traffic network, capacities of parts of the network restrict the amount of transport that can be handled by this network. The capacity of a given traffic network element is not fixed, but influenced by parameters such as number of lanes, maximum speed, weather, view horizon, and so on. These parameters also define the maximum capacity of complicated intersections. Special shapes of intersections, particularly in urban regions, may further increase or decrease their capacity. This paper investigates an evolutionary algorithm to automatically improve the geometrical layout of parts of an urban network according to externally specified criteria. The paper consists of two main parts. In the first part, a simulation model is described which is able to produce realistically behaving vehicles only by using information about the curb side locations of the roads. This avoids the need to use lane connectivity, signal plans, etc. - which are details that would change during a change of the intersection layout. In the second part of the paper, the simulation changes the road and intersection layouts based on the behaviour of the vehicles. Using a feedback loop allows one to optimize the capacity of the modelled road system while its spatial extents are minimized. As a case study, a special roundabout is examined: 'Central' in downtown Zurich, Switzerland. The particularity of this roundabout is that it partially behaves like a roundabout but also contains two uncontrolled intersections. Due to its central position in the city, the roundabout is very busy with both individual cars and public transport vehicles.
keywords	Agent simulation method, Intersection layout, Evolutionary algorithm
series	DDSS
last changed	2006/08/29 12:55

_id	sigradi2006_e011c
id	sigradi2006_e011c
authors	Narahara, Taro and Terzidis, Kostas
year	2006
title	Optimal Distribution of Architecture Programs with Multiple-constraint Genetic Algorithm
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 299-303
summary	A genetic algorithm (GA) is a search technique for optimizing or solving a problem based on evolutionary biology, using terms and processes such as genomes, chromosomes, cross-over, mutation, or selection. The evolution starts from a population of completely random individuals and happens in generations. In each generation, the fitness of the whole population is evaluated, multiple individuals are stochastically selected from the current population (based on their fitness), modified (mutated or recombined) to form a new population, which becomes current in the next iteration of the algorithm. In architecture, GAs are of special interest mainly because of their ability to address a problem offering a multiplicity of possible solutions. Contrary to other algorithms where the objective is to accommodate a manually conceived diagram, GAs are emergent procedures that evolve over time through multiple attempt cycles (i.e. generations) and therefore offer a bottom-up approach to design. In addition, by using the computational power of computers they can resolve complex interactions between multiple factors and under multiple constraints offering solutions that occasionally surprise the designer. One of the main problems in architecture today is the quantity of the information and the level of complexity involved in most building projects. As globalization and economic development has started to arise at unprecedented levels, the need for large urban developments have become commonplace. Housing projects for a few hundreds to thousands of people have started to emerge over large urban areas. In such cases, the old paradigm for housing design was the development of high rises that served as stacking devices for multiple family housing units. Such a direction was unfortunately the only way to address excessive complexity using manual design skills mainly because it was simple to conceive but also simple to construct. The unfortunate nature of this approach lies rather in the uniformity, similarity, and invariability that these projects express in comparison to individuality, discreteness, and identity that human beings and families manifest. One of the main areas of complexity that could benefit architecture is in housing projects. In these projects there is a typology of residential units that need to be combined in various schemes that will fulfill multiple functional, environmental, and economic constraints. In this paper, the design of a 200-unit residential complex on a corner of two streets in an urban context was investigated as a case study. Recent advancement in tectonics and structural engineering enables the realization of buildings in mega scales and starts to introduce another layer of complexity into the building programs. Conventional design methods relying on the preconceived knowledge based approaches are no longer reliable. Beyond the certain quantitative factors and the complexity of the problems, search occasionally enters into the unpredictable domain of the human perception. Computational approaches to design allows us to go through thousands of iterations in a second and find the solution sets beyond the reach of designers’ intuitive search spaces. Genetic Algorithm can be a potential derivative for finding optimum design solution from indeterminate search spaces constrained by multi dimensional factors.
keywords	Genetic Algorithm; Housing Design; Multiple-constraint
series	SIGRADI
email
last changed	2016/03/10 09:55

_id	caadria2006_521
id	caadria2006_521
authors	O. PALMON, M. SAHAR, L.P.WIESS, R.OXMAN
year	2006
title	VIRTUAL ENVIRONMENTS FOR THE EVALUATION OF HUMAN PERFORMANCE: Towards Virtual Occupancy Evaluation in Designed Environments (VOE)
source	CAADRIA 2006 [Proceedings of the 11th International Conference on Computer Aided Architectural Design Research in Asia] Kumamoto (Japan) March 30th - April 2nd 2006, 521-528
doi	https://doi.org/10.52842/conf.caadria.2006.x.j9t
summary	Analyzing and evaluating designs for modifications to suit the requirements of human performance is typically performed only after the architectural spaces and structures have been built and used, a process that is known as retrofit or post-occupancy evaluation. For people with disabilities, there is a special need to overcome this problem by evaluating the suitability of their home environments before the construction phase. Our work introduces a new methodology in which virtual reality (VR) is used for virtual pre-occupancy environmental evaluation (VOE). Our study demonstrates the potential of the VOE concept by developing an interactive living environments model to evaluate human performance before the construction phase. This paper presents an interactive virtual environment, ‘HabiTest’, as well as the initial results of a usability evaluation of this interactive environment.
series	CAADRIA
email
last changed	2022/06/07 07:49

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