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	acadia08_448
id	acadia08_448
authors	Alfaris, Anas; Riccardo Merello
year	2008
title	The Generative Multi-Performance Design System
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 448-457
doi	https://doi.org/10.52842/conf.acadia.2008.448
summary	This paper proposes a framework for an integrated computational design system. This design system builds on the strengths inherent in both generative synthesis models and multi-performance analysis and optimization. Four main design mechanisms and their mathematical models are discussed and their integration proposed. The process of building the design system begins by a top-down decomposition of a design concept. The different disciplines involved are decomposed into modules that simulate the respective design mechanisms. Subsequently through a bottom-up approach, the design modules are connected into a data flow network that includes clusters and subsystems. This network forms the Generative Multi-Performance Design System. This integrated system acts as a holistic structured functional unit that searches the design space for satisfactory solutions. The proposed design system is domain independent. Its potential will be demonstrated through a pilot project in which a multi-performance space planning problem is considered. The results are then discussed and analyzed.
keywords	Analysis; Behavior; Generative; Optimization; Performance
series	ACADIA
type	normal paper
last changed	2022/06/07 07:54

_id	acadia08_340
id	acadia08_340
authors	Chalmers, Chris
year	2008
title	Chemical Signaling as a Model for Digital Process in Architecture
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 340-345
doi	https://doi.org/10.52842/conf.acadia.2008.340
summary	The role of the architect is quite literally one of assembly: synthesizing the various parts of a project into a cohesive whole. It is a difficult job, often requiring the architect to weave many seemingly contradictory concerns into a solution that benefits them all. It is not surprising then, that the many elegant and effective systems found in nature should be inspiring to the architect. Emerging fields like biomimicry and systems dynamics model the patterns of interaction between organisms and their environments in terms of dynamic part to part and part to whole relationships. ¶ Observations of real relationships between organisms and their environments, as they exist in nature, reveal complex feedback loops working across multiple scales. These feedback loops operate by the simultaneous action of two observed phenomena. The first is the classic phenotypic relationship seen when organisms of the same genetic makeup instantiate differently based upon differences in their environment. This is the relationship that was originally proposed by Charles Darwin in his theory of natural selection of 1859. Darwin’s model is unidirectional: the organism adapts to its environment, but not the other way around. It operates at the local scale as individual parts react to the conditions of the whole. (Canguilhem, 1952). ¶ The second phenomenon, which sees its effect at the global scale, is the individual’s role as consumer and producer in the flows of energy and material that surround it. It is the subtle and incremental influence of the organism upon its environment, the results of which are often invisible until they reach a catastrophic threshold, at which point all organisms in the system feel global changes. ; The research presented in this paper addresses the dialectic between organism and environment as each responds reciprocally to the others’ changing state. Such feedback loops act in a non-linear fashion, across nested scales in biological systems. They can be modeled to act that way in a digital design process as well. This research is an exploration into one such model and its application to architecture: the simple communication between organisms as they affect and are affected by their environments through the use of signal chemicals.
keywords	Biology; Cellular Automata; Feedback; Material; Scripting
series	ACADIA
last changed	2022/06/07 07:55

_id	acadia08_182
id	acadia08_182
authors	Gibson, Michael; Kevin R. Klinger; Joshua Vermillion
year	2008
title	Constructing Information: Towards a Feedback Ecology in Digital Design and Fabrication
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 182-191
doi	https://doi.org/10.52842/conf.acadia.2008.182
summary	As strategies evolve using digital means to navigate design in architecture, critical process-based approaches are essential to the discourse. The often complex integration of design, analysis, and fabrication through digital technologies is wholly reliant upon a process-basis necessitating the use of a design feedback loop, which reinforces critical decision-making and challenges the notions of how we produce, visualize, and analyze information in the service of production and assembly. Central to this process-based approach is the effective and innovative integration of information and the interrogation of material based explorations in the making of architecture. This fabrication ‘ecology’ forces designers to engage complexity and accept the unpredictability of emergent systems. It also exposes the process of working to critique and refine feedback loops in light of complex tools, methods, materials, site, and performance considerations. In total, strategies for engaging this ‘ecology’ are essential to accentuate our present understanding of environmental design and theory in relation to digital processes for design and fabrication. ¶ This paper recounts a design/fabrication seminar entitled “Constructing Information” in which architecture students examined an environmental design problem by way of the design feedback loop, where their efforts in applying digital design and fabrication methods were driven explicitly by material and site realities and where their work was executed, installed, and critically explored in situ. These projections raise important questions about how information, complexity, and context overlay and merge, and underscore the critical potential of visual, spatial, and material effects as part of a fabrication-oriented design process.
keywords	Digital Fabrication; Ecology; Environment; Feedback; Performance
series	ACADIA
last changed	2022/06/07 07:51

_id	acadia08_316
id	acadia08_316
authors	Greenberg, Evan
year	2008
title	Observation, Analysis, and Computation of Branching Patterns in Natural Systems
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 316-323
doi	https://doi.org/10.52842/conf.acadia.2008.316
summary	Branching occurs in natural systems for functional reasons. However, the branching logic for each specific system is quite different due to environmental and mathematical factors. In the computation of branching systems, these mathematical factors can be incorporated quite easily into the coding of each system. However, it is the environmental components that must be given further consideration in the simulation of these natural systems. Through the engine of genetic algorithms based on evolutionary developmental theory, the specific logics observed and analyzed in branching patterns of river systems, trees, and insect tracheae can be simulated and optimized in a digital environment.
keywords	Algorithm; Branching; Emergence; Genetic; Simulation
series	ACADIA
last changed	2022/06/07 07:51

_id	acadia08_208
id	acadia08_208
authors	Griffiths, Jason
year	2008
title	Man + Water + Fan = Freshman: Natural Process of Evaporative Cooling and the Digital Fabrication of the ASU Outdoor Dining Pavilion
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 208-213
doi	https://doi.org/10.52842/conf.acadia.2008.208
summary	To the east of Johnson City TX is the Lyndon B. Johnson’s family home. Part of the Johnson Estate2 is given over to a working farm circa 1870 that presents various aspects of domestic practice from the era. This includes a desert fridge which is a simple four-legged structure with a slightly battered profile that’s draped in calico. Its principle is simple; water from an upturned jar is drawn by osmosis down the sides of the calico where it evaporates in wind currents drawn though a “dog run” between two log cabins. Cooled air circulates within the structure and where cheese and milk are kept fresh during the summer. The desert fridge is a simple system that reaches a state of equilibrium through the natural process of evaporation. ¶ This system provides a working model for a prototype structure for an outdoor dining pavilion that was designed and constructed on the campus of Arizona State University. The desert fridge is the basis for a “biological process”3 of evaporative cooling that has been interpreted in terms a ritual of outdoor dining in arid climates. The pavilion is intended as a gathering point and a place of interaction for ASU freshmen. The long-term aim of this project is to provide a multiple of these pavilions across the campus that will be the locus of a sequence of dining events over a “dining season”4 during the fall and spring semester. ; This paper describes how the desert fridge principle has been interpreted in the program and construction of the dining pavilion. It explores a sequence of levels by which the structure, via digital production process, provides an educational narrative on sustainability. This communicative quality is portrayed by the building in direct biological terms, through tacit knowledge, perceived phenomena, lexical and mechanical systems. The paper also describes how these digital production process were used in the building’s design and fabrication. These range from an empirical prognosis of evaporative cooling effects, fluid dynamics, heat mapping and solar radiation analysis through to sheet steel laser cutting, folded plate construction and fully associative variable models of standard steel construction. The aim of the pavilion is to create an environment that presents the evaporative cooling message at a multiple of levels that will concentrate the visitor in holistic understanding of the processes imbued within the building.5
keywords	Communication; Digital Fabrication; Environment; System
series	ACADIA
last changed	2022/06/07 07:51

_id	cf2011_p108
id	cf2011_p108
authors	Iordanova, Ivanka; Forgues Daniel, Chiocchio François
year	2011
title	Creation of an Evolutive Conceptual Know-how Framework for Integrative Building Design
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. 435-450.
summary	Low productivity of the building sector today is attributed to the fragmentation of tasks, disciplines and responsibilities, as well as to the resistance to adopt integrative work processes and digital means. The increased complexity of architectural projects and the aroused social consciousness for sustainable environment calls for integrative design collaboration. Thus, there is need for a Conceptual Framework combining work processes, technological means and policy aspects. According to the literature, integrative multidisciplinary design is a strategy resulting in high performance buildings nurturing sustainable way of living (Reed et al. 2009, Krygiel & Nies 2008). Responding to the increased technological complexity of our built environment, as well as to the objective of meeting multiple criteria of quality, both necessitating multidisciplinary collaboration during design, Building Information Modeling (BIM) is seen as a powerful means for fostering quality, augmenting productivity and decreasing loss in construction. Based on recent research, we can propose that a sustainable building can be designed through an integrative design process (IDP) which is best supported by BIM. However, our ongoing research program and consultations with advanced practitioners underscore a number of limitations. For example, a large portion of the interviewed professionals and construction stakeholders do not necessarily see a link between sustainable building, integrative design process and BIM, while in our opinion, their joint use augments the power of each of these approaches taken separately. Thus, there is an urgent necessity for the definition of an IDP-BIM framework, which could guide the building industry to sustainable results and better productivity. This paper defines such a framework, whose theoretical background lays on studies in social learning (activity theory and situated action theories). These theories suggest that learning and knowledge generation occurs mainly within a social process defined as an activity. This corresponds to the context in which the IDP-BIM framework will be used, its final objective being the transformation of building design practices. The proposed IDP-BIM framework is based on previous research and developments. Thus, firstly, IDP process was well formalized in the Roadmap for the Integrated Design Process‚ (Reed et al.) which is widely used as a guideline for collaborative integrative design by innovating practices in USA and Canada. Secondly, the National Building Information Modeling Standard (NBIMS) of the USA is putting an enormous effort in creating a BIM standard, Succar (2008) recently proposed a conceptual framework for BIM, but BIM ontology is still under development (Gursel et al 2009). Thirdly, an iterative design process bound to gating reviews (inspired from software development processes) was found to be successful in the context of multidisciplinary design studios (reported in our previous papers). The feedback from this study allowed for modifications and adjustments included in the present proposal. The gating process assures the good quality of the project and its compliance to the client's requirements. The challenge of this research is to map the above mentioned approaches, processes and technologies into the design process, thus creating an integrated framework supporting and nurturing sustainable design. The IDP-BIM framework can be represented by a multidimensional matrix linked to a semantic network knowledge database: - the axes of the matrix being the project timeline, the design process actors and building stakeholders (architect, engineers, client, contractor, environmental biologist, etc.), or different aspects of building performance (environmental, functional, social, interior environment quality, cost, etc.); and - the knowledge database providing multiple layers of semantic support in terms of process, domain knowledge, technology and workflow at a given moment of the project and for a given actor or building aspect. The IDP-BIM framework is created as an evolutive digital environment for know-how and will have an established protocol for regular updates. The paper will firstly present the state of the art in IDP and BIM. Secondly, it will expose the methodology used for the definition of the Framework, followed by a description of its structure, contents and digital implementation. Then, some scenarios for the use of the Framework will be shown as validation.
keywords	integrated design process, BIM, multidisciplinary design, conceptual framework
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	acadia08_192
id	acadia08_192
authors	Lee, Charles
year	2008
title	The Thermal Organism And Architecture
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 192-199
doi	https://doi.org/10.52842/conf.acadia.2008.192
summary	Throughout the history of architectural discourse the concept of metabolic function in a building and a buildings relationship to its creators is expressed by keen designers who understand the subtle linkage. Organistic homeostasis is a biological function found in all mammals including humans. The interior generation of heat classifies man as endothermic. Endothermic heat generation allows for a very controlled equilibrium and is a characteristic of more complex organisms. The body has produced highly evolved surface systems to help efficiently manage the flow of heat energy in and out of the body. I suggest building envelopes represent the human being projecting itself outwards in a prosthetic extension of the skin. Inherent in this projection are the same demands of envelope put forth in the body. In my research of anatomy I have found one system that has evolved to help facilitate endothermic heat regulation in mammals at the skin level, which is hair. How does hair transcribe into architecture? An analysis into the function of hair and its adaptable morphologies is studied. Hair is a thermal regulating system, its building equivalent are forms of thermal insulation and radiant barriers. Hairs goal is homeostatic equilibrium which has its architectural counterpoint known as the balance point. Hair is an adjustable system that mitigates between internal and external heat loading which is the goal of a building envelope. In conclusion the paper explores these issues and more in new building systems and design tactics that originate from the function of hair.
keywords	Biology; Biomimetics; Design; Environment; Responsive
series	ACADIA
last changed	2022/06/07 07:51

_id	ecaade2008_203
id	ecaade2008_203
authors	Matejovská, Dana; Achten, Henri
year	2008
title	Five Experiments to Elicit CAAD Work Strategies of Students in Three Levels of Education
source	Architecture in Computro [26th eCAADe Conference Proceedings / ISBN 978-0-9541183-7-2] Antwerpen (Belgium) 17-20 September 2008, pp. 877-886
doi	https://doi.org/10.52842/conf.ecaade.2008.877
summary	In order to understand the learning needs of our students, we have defined a series of five small experiments. In each experiment, a subject has to perform a limited task using a CAD system. The experiments are undertaken by subjects from three different groups: pre-university school goers, first year students of architecture, and advanced students of architecture. By comparing the differences between the groups we can identify the following aspects: (1) start level of students, (2) starting work strategies, (3) development of work strategies, and (4) deficiences in work strategies. On this basis, we can develop more specific teaching material that will be better suited to the needs of the students. In this paper we report on the experimental setup, research methodology, and preliminary results.
keywords	Learning strategies, experimental research
series	eCAADe
type	normal paper
email
last changed	2022/06/07 07:58

_id	acadia08_256
id	acadia08_256
authors	Ostwald, Michael J.; Josephine Vaughan; Stephan Chalup
year	2008
title	A Computational Analysis of Fractal Dimensions in the Architecture of Eileen Gray
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 256-263
doi	https://doi.org/10.52842/conf.acadia.2008.256
summary	This paper is the first investigation of the fractal dimensions of five of the house designs of Eileen Gray; a prominent architect working mainly in France between 1922 and 1956. In this paper, a computational variation of the “box-counting approach” (used to determine fractal dimension) is applied to a multi-dimensional review of the houses of Gray. As a contemporary of Le Corbusier, Gray is a significant architect for such an analysis. This research is important because it expands the set of examples of early Twentieth Century architects who have been analyzed using the method. This paper provides a computer-assisted mathematical analysis of characteristic visual complexity in five houses designs by Eileen Gray.
keywords	Algorithm; Analysis; Computation; Design; Environment
series	ACADIA
last changed	2022/06/07 08:00

_id	acadia08_142
id	acadia08_142
authors	Sprecher, Aaron; Paul Kalnitz
year	2008
title	Degrees and Switches
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 142-151
doi	https://doi.org/10.52842/conf.acadia.2008.142
summary	In recent years, evolutionary biology has been the focus of post-Darwinist theories superseding the mere notion of variation with a concept called evolutionary development. The theory of evolutionary development, commonly referred to as evo-devo, follows a series of observations on the nature of organic developments and natural morphologies. Its main contribution rests on an evolutionary model that considers the similarities of genetic material forming organisms and their differences in morphological development due to switching mechanisms between the assigned genes. As observed by the American biologist Sean Carroll, evolution follows regulatory sequences of selector genes that are similar and can be found across various species of insects, plants and animals. ¶ This observation represents a counter-proposal to the old-modern evolutionary theories that looked at processes of adaptation as a function of the emergence of new genes. Evo-devo, on the contrary, recognizes that morphological differences are triggered by recombinatory switches that re-arrange genes in manifold ways to produce numerous characteristics of adaptation. ¶ From a design point of view, evo-devo has tremendous implications because it suggests that generative design protocols may induce sets of similar operations, yet stimulate a wide range of morphologies according to their sequential arrangements and activities. These generative design strategies include, among others, computational methods such as structural shape annealing and object-oriented analysis and design. While these methods are now integrating computing design practices, it is here proposed to review these two computational design methods in the context of three research projects.
keywords	Algorithm; Evolution; Genetic; Object-Oriented; Stochastic
series	ACADIA
last changed	2022/06/07 07:56

_id	acadia08_390
id	acadia08_390
authors	Vrana, Andrew; Joe Meppelink; Ben Nicholson
year	2008
title	New Harmony Grotto
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 390-399
doi	https://doi.org/10.52842/conf.acadia.2008.390
summary	With the expanding wave of contemporary architecture inspired and informed by biomorphic design and biomimetic processes, the re-evaluation of work of Frederick Kiesler has become immanent. Throughout the mid 20th century he became increasingly interested in the relationship of natural form and structure to architectural space and organization. The Grotto for Meditation proposed in 1963 for New Harmony, Indiana commissioned by Mrs. Jane Blaffer-Owen was the culmination of his life’s work. Though the project was not realized, it embodies all of the influences of his time from surrealism to biology and cybernetic theory. Through our university and the Blaffer Foundation, we engaged in formal research and tectonic resolution of the project employing digital modeling and fabrication technologies at our College and in Houston where Mrs. Owen lives when she is not in New Harmony. We based this project on the full catalog of archival material made available to us with support from the Blaffer and Kielser Foundations. Our exploration also was influenced by discussions with Mrs. Blaffer-Owen who is still very interested in realizing this profoundly interesting and enigmatic project. Our university has opened the door to the opportunity that our reinterpreted Grotto become a permanent fixture on the campus next to a wetland landscape that it is currently under construction. Our research into Kiesler has engaged his esoteric concepts of “co-realism” and “continuous tension” as well as his early use of recursive geometry and biomorphic form in design. From reverse engineering and digital fabrication via 3D scanning to generative structural articulation, we are experimenting with a structural/spatial system that closely aligns with Kiesler’s originally proposed tile patterning dilated into a minimal structure. Our prototypes and the final version will be fabricated by one of the largest commercially for-hire water jet cutter in country and assembled on the site.
keywords	Biomorphic; Digital Fabrication; Prototype; Structure
series	ACADIA
last changed	2022/06/07 07:58

_id	acadia08_416
id	acadia08_416
authors	Wessel, Ginette; Remco Chang ;Eric Sauda
year	2008
title	Towards A New (Mapping Of The) City: Interactive, Data Rich Modes Of Urban Legibility
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 416-421
doi	https://doi.org/10.52842/conf.acadia.2008.416
summary	The modern metropolis is a vast environment replete with physical elements and complex overlays of information. The city historically has been represented as a discrete physical object; this allocentric view has become less and less useful as a method of meaningfully orientation and navigation. Today, the city is defined by technologies and flows of information that constantly change our perceptions. While it has always been true that symbolic and religious dimensions have had a place in our understanding of the city, the complex and transitory nature of the contemporary city requires a representation that is interactive rather than static. This paper presents proposals for new interactive modes of urban legibility: data space, based on the work of Bill Mitchell and Robert Venturi; virtual and physical city, established from the work of Christine Boyer and Bill Mitchell; multi-nodal, derived from the work of Tarik Fathy and Thomas Sieverts; and information flows, founded on the work of Melvin Webber. Each approach is introduced with a conceptual overview, nascent examples and a schematic proposal for a computer based urban visualization. Based on this study, we conclude that two necessary aspects of any urban visualization are interactivity and the combination of data and geospatial information. Interactivity is necessary because of the fluid nature of our experience and the diversity of individual intentions in the contemporary city. The combination of data and geospatial information is necessary because the geometry of the city had become less important as a reliable indicator of meaning.
keywords	Information; Interactive; Mapping; Urbanism; Visualization
series	ACADIA
last changed	2022/06/07 07:57

_id	ecaade2008_132
id	ecaade2008_132
authors	Kanellos, Anastasios; Hanna, Sean
year	2008
title	Topological Self-Organisation
source	Architecture in Computro [26th eCAADe Conference Proceedings / ISBN 978-0-9541183-7-2] Antwerpen (Belgium) 17-20 September 2008, pp. 459-466
doi	https://doi.org/10.52842/conf.ecaade.2008.459
summary	The problem of filling a given volume with a 3-dimensional structural network lattice comprising a certain number of nodes is considered. The proposed method of approach is contained within the framework of iterative physical dynamic simulation and implements a generative algorithm that features a particle-spring system. The algorithm is able to suitably arrange nodes in the space of a volumetric envelope and establish connections between them through local rules of self-organisation, thus producing efficient space frames without having prior knowledge of either geometry or topology of the network lattice.
keywords	Physical dynamic simulation, particle-spring system, space frame
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ddss2008-02
id	ddss2008-02
authors	Gonçalves Barros, Ana Paula Borba; Valério Augusto Soares de Medeiros, Paulo Cesar Marques da Silva and Frederico de Holanda
year	2008
title	Road hierarchy and speed limits in Brasília/Brazil
source	H.J.P. Timmermans, B. de Vries (eds.) 2008, Design & Decision Support Systems in Architecture and Urban Planning, ISBN 978-90-6814-173-3, University of Technology Eindhoven, published on CD
summary	This paper aims at exploring the theory of the Social Logic of Space or Space Syntax as a strategy to define parameters of road hierarchy and, if this use is found possible, to establish maximum speeds allowed in the transportation system of Brasília, the capital city of Brazil. Space Syntax – a theory developed by Hillier and Hanson (1984) – incorporates the space topological relationships, considering the city shape and its influence in the distribution of movements within the space. The theory’s axiality method – used in this study – analyses the accessibility to the street network relationships, by means of the system’s integration, one of its explicative variables in terms of copresence, or potential co-existence between the through-passing movements of people and vehicles (Hillier, 1996). One of the most used concepts of Space Syntax in the integration, which represents the potential flow generation in the road axes and is the focus of this paper. It is believed there is a strong correlation between urban space-form configuration and the way flows and movements are distributed in the city, considering nodes articulations and the topological location of segments and streets in the grid (Holanda, 2002; Medeiros, 2006). For urban transportation studies, traffic-related problems are often investigated and simulated by assignment models – well-established in traffic studies. Space Syntax, on the other hand, is a tool with few applications in transport (Barros, 2006; Barros et al, 2007), an area where configurational models are considered to present inconsistencies when used in transportation (cf. Cybis et al, 1996). Although this is true in some cases, it should not be generalized. Therefore, in order to simulate and evaluate Space Syntax for the traffic approach, the city of Brasília was used as a case study. The reason for the choice was the fact the capital of Brazil is a masterpiece of modern urban design and presents a unique urban layout based on an axial grid system considering several express and arterial long roads, each one with 3 to 6 lanes,
keywords	Space syntax, road hierarchy
series	DDSS
last changed	2008/09/01 17:06

_id	ddss2008-46
id	ddss2008-46
authors	Sharma, Shrikant B. and Vincent Tabak
year	2008
title	Rapid Agent Based Simulation of People Flow forDesign of SpacesAnalysis, Design and Optimisation
source	H.J.P. Timmermans, B. de Vries (eds.) 2008, Design & Decision Support Systems in Architecture and Urban Planning, ISBN 978-90-6814-173-3, University of Technology Eindhoven, published on CD
summary	This paper presents a novel static-dynamic network based people flow simulation model applied to design optimisation of circulation spaces within buildings and urban areas. In the current state of art the majority of existing people flow simulation models are driven by analysis rather than design. This is fine for simpler, evacuation type scenarios where a single or a few analyses runs are sufficient to determine the evacuation time. For more complex scenarios such as crowd circulation with complex multi-directional flow, one is as interested in the sensitivity of various design and stochastic behavioural parameters, so the rapid modelling simulations together with design capability become important. This paper presents a simplified network based people flow model that enables rapid simulations and therefore iterative design optimization of circulation space. The work integrates the techniques of graph-theory based network analysis with an origin-destination matrix model of crowd flow, to provide a rapid, parametric model. The resulting model can be analysed in a static as well as dynamic state. In the static state, the model analyses space based on connectivity of nodes, superimposed with the origin-destination matrix of population to provide valuable information such as footfalls, density maps, as well as quasi-static parameters such as mean flow rates. In the dynamic state, the model allows time-dependent analysis of flow using a detailed agent based simulation that also incorporates dynamic route-choice modelling, agent behaviours and interaction, and stochastic variations. The paper presents the integrated modelling technique and its implementation into simulation software SMART Move.
keywords	People Flow, Pedestrian, Agent Based Simulation, Evacuation, Network, Optimisation
series	DDSS
last changed	2008/09/01 17:06

_id	ecaade2008_186
id	ecaade2008_186
authors	Bourdakis, Vassilis
year	2008
title	Low Tech Approach to 3D Urban Modeling
source	Architecture in Computro [26th eCAADe Conference Proceedings / ISBN 978-0-9541183-7-2] Antwerpen (Belgium) 17-20 September 2008, pp. 959-964
doi	https://doi.org/10.52842/conf.ecaade.2008.959
summary	Over the last decade various examples of urban 3D models have been created employing various techniques for data collection and model building. The problems faced are well documented, issues of accuracy, complexity and utility of the models has also been addressed. This paper presents a low tech approach to accurate city modeling focusing on engineering applications, browsing/experiencing applications as well as multi-layering time based analyses, historical info overlaying for use in interactive real time applications (museum exhibitions, research projects for behavioral patterns of users in 3D urban environments, marketing, tourism, etc). The pros and cons of the proposed methodology are analyzed and ways forward suggested.
keywords	Urban modeling, photogrammetric techniques, 3D modeling
series	eCAADe
email
last changed	2022/06/07 07:54

_id	ecaade2008_008
id	ecaade2008_008
authors	Cypriano, Débora Z.; Celani, Gabriela
year	2008
title	Sloping Façade Buildings in Brazilian Modern Architecture
source	Architecture in Computro [26th eCAADe Conference Proceedings / ISBN 978-0-9541183-7-2] Antwerpen (Belgium) 17-20 September 2008, pp. 61-68
doi	https://doi.org/10.52842/conf.ecaade.2008.061
summary	Sloping façade buildings have been present throughout XXth century architecture, for different programs and in different countries. One of the first architects to use sloping façades was probably Frank Lloyd Wright, two early examples being Taliesin West (1937) and the Annie Pfeiffer Chapel at Florida Southern College (1938-41). In Brazilian Modern architecture sloping façades soon became a recurrent solution, the earlier examples being produced by architects Oscar Niemeyer, João V. Artigas and Affonso E. Reidy, possibly influenced by FLW, as suggested by Irigoyen (2002). The present research proposes that these buildings may have influenced other architects in Brazil and abroad. In order to confirm this hypothesis, a design process was modelled and a shape grammar was developed to describe a small corpus of buildings designed by these three architects in the 1940´s and 1950´s.
keywords	Sloping façade buildings, shape grammar, Brazilian modern architecture
series	eCAADe
email
last changed	2022/06/07 07:56

_id	ddss2008-12
id	ddss2008-12
authors	Tabak, V.; B. de Vries, J. Dijkstra
year	2008
title	Validating an office simulation model using RFIDtechnology
source	H.J.P. Timmermans, B. de Vries (eds.) 2008, Design & Decision Support Systems in Architecture and Urban Planning, ISBN 978-90-6814-173-3, University of Technology Eindhoven, published on CD
summary	This paper presents the validation of an office utilisation model for the research project called “User Simulation of Space Utilisation (USSU)”. The result of this research is a system that can be used for analysing and evaluating the space utilisation of a building for any given organisation. A system for building usage simulation that produces data about activities of members of an organisation can substantially improve the relevance and performance of building simulation tools. This is relevant for engineering domains as well as for architects to evaluate the performance of a building design. For a thorough evaluation of the system an experiment was executed for assessing its predictive quality in the context of a real building, organisation and actual human behaviour; this experiment was executed using RFID technology. The result of the experiment was observed data about the space utilisation of the selected organisation. These data were compared with the space utilisation predicted by the USSU system to evaluate the simulation model. The validation of USSU showed that there were no significant differences between the predicated and observed activity behaviour. As a consequence, the output of USSU is considered to be valid.
keywords	Office utilisation simulation, building simulation system, validation, RFID, space utilisation
series	DDSS
last changed	2008/09/01 17:06

_id	ijac20086405
id	ijac20086405
authors	Ahlquist, Sean; Fleischmann, Moritz
year	2008
title	Elemental Methods for Integrated Architectures: Experimentation with Design Processes for Cable Net Structures
source	International Journal of Architectural Computing vol. 6 - no. 4, 453-475
summary	Tension active systems are compelling architectural structures having an intimate connection between structural performance and the arrangement of material. The direct flow of structural forces through the material makes these systems attractive and unique from an aesthetic point of view, but they are a challenge to develop from a design and an engineering perspective. Traditional methods for solving such structural systems rely on both analog modeling techniques and the use of highly advanced engineering software. The complexity and laborious nature of both processes presents a challenge for iterating through design variations. To experiment with the spacemaking capabilities of tension active systems, it is necessary to design methods that can actively couple the digital simulation with the analog methods for building the physical structure. What we propose is a designer-authored process that digitally simulates the behaviors of tension active systems using simple geometric components related to material and structural performance, activated and varied through elemental techniques of scripting. The logics for manufacturing and assembly are to be embedded in the digital generation of form. The intention is to transform what is a highly engineered system into an architectural system where investigation is as much about the determination of space and environment as it is about the arrangement of structure and material.
series	journal
last changed	2009/03/03 07:48

_id	acadia08_066
id	acadia08_066
authors	Ahlquist, Sean; Moritz Fleischmann
year	2008
title	Material & Space: Synthesis Strategies based on Evolutionary Developmental Biology
source	Silicon + Skin: Biological Processes and Computation, [Proceedings of the 28th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) / ISBN 978-0-9789463-4-0] Minneapolis 16-19 October 2008, 66-71
doi	https://doi.org/10.52842/conf.acadia.2008.066
summary	A material system can be defined as a set of self-organized materials, defining a certain spatial arrangement. In architecture, this material arrangement acts as a threshold for space, though space often only appears as a by-product of the material organization. Treating space as a resulting, therefore secondary, independent product minimizes the capacity to generate architecture that is astutely aware of concerns of functionality, environment and energy. An effective arrangement of material can only be determined in relation to the spaces that it defines. When proposing a more critical approach, a material system can be seen as an intimate inter-connection and reciprocal exchange between the material construct and the spatial conditions. It is necessary to re-define material system as a system that coevolves spatial and material configurations through analysis of the resultant whole, in a process of integration and evaluation. ¶ With this understanding of material system comes an expansion in the number of criteria that are simultaneously engaged in the evolution of the design. The material characteristics, as well as the spatial components and forces (external and internal), are pressures onto the arrangement of material and space. ¶ This brings a high degree of complexity to the process. Biological systems are built on methods that resolve complex interactions through sets of simple yet extensible rules. Evolutionary Developmental Biology explains how growth is an interconnected process of external forces registering fitness into a fixed catalogue of morphological genetic tools. Translating the specific framework for biological growth into computational processes, allows the pursuit of an architecture that is fully informed by the interaction of space and material.
keywords	Biology; Computation; Material; Parametric; System
series	ACADIA
last changed	2022/06/07 07:54

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