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_id 2005_537
id 2005_537
authors Barrios, Carlos
year 2005
title Symmetry, Rules and Recursion
source Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 537-543
doi https://doi.org/10.52842/conf.ecaade.2005.537
summary This paper presents a parametric shape grammar that explains the generation of the structural forms of the Spanish designer Santiago Calatrava. The shape grammar is divided into two separate grammars a lower level grammar and a higher level grammar. The lower level or first grammar is composed of rules to generate a “fundamental unit” design, which has the characteristic to be a single component with non-repetitive parts that becomes the primitive object of the design. The higher level or second grammar is composed of rules that generate the overall design by recursive application of Euclidean transformations to the fundamental unit. We concentrate our discussion on the higher level or second grammar to demonstrate the process of generating complex designs by application of simple rules.
keywords Shape Grammars, Parametric Design, Design Rules, Complex Structures
series eCAADe
email
last changed 2022/06/07 07:54
_id acadiaregional2011_023
id acadiaregional2011_023
authors Barrios, Carlos
year 2011
title Parametric Affordances: What? When? How?
source Parametricism (SPC) ACADIA Regional 2011 Conference Proceedings
doi https://doi.org/10.52842/conf.acadia.2011.x.h7g
summary Parametric Affordances presents a theoretical framework for development, use and implementation of parametric models in a design setting. This paper presents fundamental background theoretical concepts and proposes an approach to separate tasks and actions of the design process in different kinds of parametric models to take advantage of them.
series ACADIA
last changed 2022/06/07 07:49
_id caadria2008_42_session4b_343
id caadria2008_42_session4b_343
authors Barrios, Carlos; Damien Alomar
year 2008
title Computing with textile blocks: Symmetry Studies on Frank Lloyd Wright’s Textile Block Design Patterns
source CAADRIA 2008 [Proceedings of the 13th International Conference on Computer Aided Architectural Design Research in Asia] Chiang Mai (Thailand) 9-12 April 2008, pp. 343-349
doi https://doi.org/10.52842/conf.caadria.2008.343
summary This research focused on generating alternative designs from the textile blocks California Houses of Frank Lloyd Wright based on regular wallpaper symmetry patterns. A computational framework was developed that generates the designs of the original textile blocks in combination with all possible wallpaper symmetry patterns. This computational framework allowed for the creation of the catalog of possible regular patterns. The development of the framework allowed for a deeper understanding of the symmetrical relationships of the blocks and the wallpaper patterns created by Frank Lloyd Wright and a large collection of new ones.
keywords Symmetry Studies, Design Patterns, Blocks Computation, Frank Lloyd Wright, Textile Blocks
series CAADRIA
email
last changed 2022/06/07 07:54
_id 038b
authors Barron, Alicia
year 2000
title Generación de Objetos Autónomos en Mundos Virtuales (Generation of Autonomous Objects in Virtual Worlds)
source SIGraDi’2000 - Construindo (n)o espacio digital (constructing the digital Space) [4th SIGRADI Conference Proceedings / ISBN 85-88027-02-X] Rio de Janeiro (Brazil) 25-28 september 2000, pp. 310-312
summary The goal of this paper is to define the processes that enable the simulation of an autonomous pedestrian’s journeys in confined spaces; and to determine their paths beginning with random processes under preset parameters in a generic fashion as well as doing so in a manner independent from walking movement. We present a conceptual model designed to generate pedestrian journeys, taking into account the focuses of attraction and their influence in the paths taken. In order to implement this model, we add to an architectural blueprint the elements necessary to recognize the geometric characteristics of the World (Limits, Focuses and Portals) that affect the displacements of pedestrians. These characteristics enable us to determine the paths to be taken in the World. The issues of the simulation (the position that each pedestrian occupies for unit of time) can be used by other applications, to generate animations or to verify critical situations.
series SIGRADI
email
last changed 2016/03/10 09:47
_id sigradi2012_326
id sigradi2012_326
authors Barros Filho, Mauro Normando Macêdo
year 2012
title Simulando a dinâmica da segregação urbana: dos autômatos celulares aos modelos baseados em agentes [Simulating urban segregation dynamics: from cellular automata to agent based models]
source SIGraDi 2012 [Proceedings of the 16th Iberoamerican Congress of Digital Graphics] Brasil - Fortaleza 13-16 November 2012, pp. 453-457
summary As a consequence of the emergence of models based on the notions of disequilibrium and uncertainty, cities have being seen as intrinsically complex nonlinear systems subject to sociospatial changes that occur, simutaneously, in many scales. The present paper analyzes three models to simulate urban segregation dynamics. Schelling’s model shows how can emerge unexpected highly segregated global patterns from local preferences to live close to each other. Epstein and Axtell’s model reveals its pedagogic role through the manipulation of specific parameters. Portugali’s model emphasizes the cognition and learning capabilities of agents to recognize patterns and change their behaviour accordingly.
keywords Segregação Urbana; Modelos de Simulação; Autômatos Celulares; Modelos Baseados em Agentes
series SIGRADI
email
last changed 2016/03/10 09:47
_id ijac20076301
id ijac20076301
authors Barros, Diana Rodriguez; Castane, Dora; Stipech, Alfredo
year 2008
title Hypermedia urban models in virtual environments: Case studies of central areas of Argentine cities
source International Journal of Architectural Computing vol. 6 - no. 3, pp. 221-241
summary The virtual models of urban fragments recreate environments of simulation and analysis with a great degree of realism. This paper addresses a review of case studies in which Argentine researchers from three different university centres have worked jointly. We examine spatial databases from a representational and communicational perspective as virtual 3D, walkthrough, and interconnected urban models. Our aim is to explore, recognise and analyse advances in this direction, and to apply them to the development of virtual models of central areas in the Argentine cities of Buenos Aires, Rosario, Santa Fe and Mar del Plata. We present the methodology used to analyse the design, production and management processes of the virtual model as well as the results of our research. We acknowledge that these models are consistent non-traditional instruments of analysis which complement the knowledge of the city and facilitate spatial comprehension. Finally, we review predominant tendencies.
series journal
last changed 2008/10/14 14:00
_id sigradi2014_057
id sigradi2014_057
authors Barros, Diana Rodriguez; María Mandagarán
year 2014
title Pensamiento de diseño y construcción de narrativas visuales. Caso de prácticas didácticas disruptivas en entornos postdigitales [Design thinking and construction of visual narratives. Case teaching practices in disruptive postdigitals environments]
source SIGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 195-199
summary Design Thinking recognizes processes linked to empathy, creation, prototyping and storytelling, that condition design methodologies to solve complex problems with user participation. From this perspective, next to disruptive practices, we present learning experiences focus in management, design and production of graphic databases in Web 2.0 and 3.0 contexts. They are linked to photomontages and graphic communication pieces of urban-architectural works and narratives that give meaning and entity to those interventions. We recorded results that value spatial thinking with images. Also the presence of traditional skills with hybrid skills in students, that encourage fluency, creativity and innovation, self-learning, experimentation, teamwork and network integration.
series SIGRADI
email
last changed 2016/03/10 09:47
_id sigradi2014_056
id sigradi2014_056
authors Barros, Diana Rodriguez; Stella Maris Massa
year 2014
title Diseño de interfaces y modelos de análisis y evaluación en entornos post-digitales. Casos de aplicación con recursos educativos abiertos y repositorios [Interface design and analysis and evaluation models post-digital environmentsApplication cases with open educational resources and repositories]
source SIGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay - Montevideo 12 - 14 November 2014, pp. 44-48
summary We present studies and advances that link two I+D+T projects based in FADU and FI UNMdP, Argentina. These studies, started this year, have the common aim from two complementary visions, enriching an indexed and classified heritage about Open Educational Resources and repositories in postdigital environments and academic areas. This is a collaborative and interdisciplinary work with the purpose of supporting the improvement of presence, semi-presence, and distance educational process, and helping free and equal access to different available educational resources. At this state, in particular, we are interested in contributing to the improvement of REA interface designs and repositories through providing heuristic lists that join later an analysis and evaluation interface model.
series SIGRADI
email
last changed 2016/03/10 09:47
_id 0a71
authors Barros, Diana Rodríguez
year 2002
title Sistemas hipermediales, efectos del tamaño de los nodos y del número de vínculos [Hyper medial Systems; Size effects of the nodes and number of bonds]
source SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 186-189
summary A Hypermedia system is, morphologically speaking, an information structure which organizes a set of elements of alphanumeric and graphic nature as a web. This enables a multidimensional access from specific interests. One of the most widespread hypermedia applications is within the field of education. There should be validation criteria which contribute to systematize and direct design processes for didactic hypermedia. This work aims at becoming a contribution by analyzing the relations and effects produced by the number of links and node sizes on some basic didactic uses; particularly, within information search, learning and attitude towards hypermedia. From the results obtained, we propose guidelines for the design of didactic Web Sites and CD Rom.
series SIGRADI
email
last changed 2016/03/10 09:47
_id 2044
authors Barros, Diana Rodríguez and Mandagaran, María
year 2002
title Sistemas Hipermediales y descentramiento temático [Hyper medial Systems and thematic decentralized]
source SIGraDi 2002 - [Proceedings of the 6th Iberoamerican Congress of Digital Graphics] Caracas (Venezuela) 27-29 november 2002, pp. 190-192
summary Hipermedia lead to a non- linear organization of information, where the user decides the path to follow and the relations among the different information blocks. They constitute starting points for establishing both social and sin gu lar “sense genealogies”. Sense production by means of mutimedia access and the resignifying of information correspond, within the Theory of Science Didactics, to the concept of thematic decentering. This concept refers to fl exibility and transference modes, opposed toseg men ta tion and which enable to explore, approach and relate different topics and complexities. It is supposed to generate more cultivated individuals by broadly linking science, technology and art. Within this theoretic frame work, the work presents the de vel op ment of a hipermedium on the Villa Victoria Cultural Center, which aims at a didactic treat ment of cultural spaces as object of knowl edge.
series SIGRADI
email
last changed 2016/03/10 09:47
_id sigradi2012_56
id sigradi2012_56
authors Barros, Diana Rodríguez
year 2012
title Diseño, Enseñanza y Prácticas Disruptivas. Marcos conceptuales de referencia [Design, Teaching and Disruptive Practices. Conceptual reference frameworks]
source SIGraDi 2012 [Proceedings of the 16th Iberoamerican Congress of Digital Graphics] Brasil - Fortaleza 13-16 November 2012, pp. 251-254
summary From the complex perspective of modern information society, knowledge and digital culture, we have detected limitations and obsolescente levels of much of the university educational system. We consider that teaching and learning reflect a beta protoparadigm state in constant construction. We value new ideas within the limits of education, communication and transmedia aesthetics, which contribute to the visibility of innovative practices and transformations. We reflect about necessary changes in the current education, from the diversification and reinvention of the use of educational technologies to liquid infrastructures. Our intention is to contribute to the conceptual frameworks development to fit sustainable strategies and result transferences towards classroom practices known as learning ecosystems.
keywords Diseño; Enseñanza; Disrupción; Marcos conceptuales; Prácticas docentes
series SIGRADI
last changed 2016/03/10 09:47
_id sigradi2012_57
id sigradi2012_57
authors Barros, Diana Rodríguez; Mandagarán, María
year 2012
title Información interconectada, curación colectiva y experiencias de usuario: El caso de la red social Pinterest [Interconnected information, collective curation and user experiences: the case of Pinterest social network]
source SIGraDi 2012 [Proceedings of the 16th Iberoamerican Congress of Digital Graphics] Brasil - Fortaleza 13-16 November 2012, pp. 167-170
summary We present exploratory studies about 2.0 web applications linked to renewed collective curatorial activities. In particular we focus on Pinterest application, which collectively generates collection spaces centered in a strong both image and digital graphic presence. We analyze practices related to User Experience Design, which refer to all the factors linked to Interface Design, and produce positive or negative perception of the application. We use the Shedroff model (2009) exploring dimensional categories about significance, duration, amplitude, intensity, interaction and triggers or experience releasers.
keywords Diseño; Interfaces; Curación colectiva; Experiencias de Usuario
series SIGRADI
email
last changed 2016/03/10 09:47
_id cf2011_p170
id cf2011_p170
authors Barros, Mário; Duarte José, Chaparro Bruno
year 2011
title Thonet Chairs Design Grammar: a Step Towards the Mass Customization of Furniture
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. 181-200.
summary The paper presents the first phase of research currently under development that is focused on encoding Thonet design style into a generative design system using a shape grammar. The ultimate goal of the work is the design and production of customizable chairs using computer assisted tools, establishing a feasible practical model of the paradigm of mass customization (Davis, 1987). The current research step encompasses the following three steps: (1) codification of the rules describing Thonet design style into a shape grammar; (2) implementing the grammar into a computer tool as parametric design; and (3) rapid prototyping of customized chair designs within the style. Future phases will address the transformation of the Thonet’s grammar to create a new style and the production of real chair designs in this style using computer aided manufacturing. Beginning in the 1830’s, Austrian furniture designer Michael Thonet began experimenting with forming steam beech, in order to produce lighter furniture using fewer components, when compared with the standards of the time. Using the same construction principles and standardized elements, Thonet produced different chairs designs with a strong formal resemblance, creating his own design language. The kit assembly principle, the reduced number of elements, industrial efficiency, and the modular approach to furniture design as a system of interchangeable elements that may be used to assemble different objects enable him to become a pioneer of mass production (Noblet, 1993). The most paradigmatic example of the described vision of furniture design is the chair No. 14 produced in 1858, composed of six structural elements. Due to its simplicity, lightness, ability to be stored in flat and cubic packaging for individual of collective transportation, respectively, No. 14 became one of the most sold chairs worldwide, and it is still in production nowadays. Iconic examples of mass production are formally studied to provide insights to mass customization studies. The study of the shape grammar for the generation of Thonet chairs aimed to ensure rules that would make possible the reproduction of the selected corpus, as well as allow for the generation of new chairs within the developed grammar. Due to the wide variety of Thonet chairs, six chairs were randomly chosen to infer the grammar and then this was fine tuned by checking whether it could account for the generation of other designs not in the original corpus. Shape grammars (Stiny and Gips, 1972) have been used with sucesss both in the analysis as in the synthesis of designs at different scales, from product design to building and urban design. In particular, the use of shape grammars has been efficient in the characterization of objects’ styles and in the generation of new designs within the analyzed style, and it makes design rules amenable to computers implementation (Duarte, 2005). The literature includes one other example of a grammar for chair design by Knight (1980). In the second step of the current research phase, the outlined shape grammar was implemented into a computer program, to assist the designer in conceiving and producing customized chairs using a digital design process. This implementation was developed in Catia by converting the grammar into an equivalent parametric design model. In the third phase, physical models of existing and new chair designs were produced using rapid prototyping. The paper describes the grammar, its computer implementation as a parametric model, and the rapid prototyping of physical models. The generative potential of the proposed digital process is discussed in the context of enabling the mass customization of furniture. The role of the furniture designer in the new paradigm and ideas for further work also are discussed.
keywords Thonet; furniture design; chair; digital design process; parametric design; shape grammar
series CAAD Futures
email
last changed 2012/02/11 19:21
_id sigradi2009_887
id sigradi2009_887
authors Barría Chateau, Hernán Alberto; Rodrigo García Alvarado; Cecilia Poblete Arrendondo
year 2009
title Anarquitectura Digital [Digital Anarchitecture]
source SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary This article reviews the work and the artistic and architectural context of the artist Gordon Matta-Clark. It checks the context as well as the urban and social conditions of his interventions, to place these works in contemporary culture. In particular this paper analyzes “Splitting”, Matta-Clark´s work that synthesizes his critical attitude to the Modern condition; using computational techniques of geometric modeling, visualization, graphics, digital manufacturing and structural analysis to explore and determine the formal rules and materials used by the artist to develop actions with significant spatial and social connotations.
keywords Anarchitecture; Modeling; Visualization; Digital Manufacturing; Structural Analysis
series SIGRADI
email
last changed 2016/03/10 09:47
_id 2570
authors Barrón, Alicia and Chiarelli, Julia
year 1999
title Problemática de las Modelizaciones (The Issue of Modeling)
source III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 182-185
summary The modelization of an architectural fact, generated through a CAD program, doesn't have only the purpose of generating a virtual electronic, but a constructive scale model of geometric nature. It also implies, a conceptualization level and a posture in front of the pattern that makes thinking in other fields besides the formally constructive, such as: the descriptive and geometric patterns, the communicational and the symbolic pattern. We should understand the way the constructive thought is done the message of the model, either for the relationship with the environment and with the human scale, depends not only upon the author, but his elections will be intrinsically related with his cultural baggage, besides its geometric, graphical and technicians data. These databases condition the result of the model, for this reason we analyzed these relationships looking for a good handling of the cultural codes, to achieve a complete communication of the model. In these moments of the "global village", we should consider this problematic as a visceral topic of the architectural representation, to achieve an effective communication, among different cultures, of the models represented.
series SIGRADI
email
last changed 2016/03/10 09:47
_id 2928
authors Barsky, Brian A. and De Rose, Tony D.
year 1985
title The Beta2-spline : A Special Case of the Beta-spline Curve and Surface Representation
source IEEE Computer Graphics and Applications September, 1985. vol. 5: pp. 46-58 : ill. includes bibliography.
summary This article develops a special case of the Beta-spline curve and surface technique called the Beta2-spline. While a general Beta-spline has two parameters (B1 and B2) controlling its shape, the special case presented here has only the single parameter B2. Experience has shown this to be a simple but very useful special case that is computationally more efficient than the general case. Optimized algorithms for the evaluation of the Beta2-spline basis functions and rendering of Beta2-spline curves and surfaces via subdivision are presented. This technique is proving to be quite useful in the modeling of complex shapes. The representation is sufficiently general and flexible so as to be capable of modeling irregular curved-surface objects such as automobile bodies, aircraft fuselages, ship hulls, turbine blades, and bottles
keywords B-splines, curved surfaces, computational geometry, representation, algorithms, computer graphics, rendering
series CADline
last changed 2003/06/02 14:41
_id 29d2
authors Barsky, Brian A. and DeRose,Tony D.
year 1989
title Geometric Continuity of Parametric Curves: Three Equivalent Characterizations
source IEEE Computer Graphics and Applications. November, 1989. vol. 9: pp. 60-68 : ill. includes bibliography
summary Geometric continuity of curves has received a good deal of research attention in recent years. The purpose of this article is to distill some of the important basic results into a self-contained presentation. The January 1990 issue of CG&M presents a paper that continues the discussion by offering applications of the theoretical background provided here
keywords continuity, parametrization, curves, computational geometry, representation
series CADline
last changed 2003/06/02 13:58
_id a426
authors Barsky, Brian A. and Greenberg, Donald P.
year 1982
title Interactive Surface Representation System Using a B-spline Formulation with Interpolation Capability
source computer Aided Design. July, 1982. vol. 14: pp. 187-194 : col.ill. includes bibliography
summary An interactive surface representation system is described which uses a parametric uniform bicubic B-spline formulation which can describe a surface initially defined to interpolate a specified network of points
keywords CAD, curved surfaces, computational geometry, interpolation, B-splines
series CADline
last changed 2003/06/02 13:58
_id 2fdd
authors Barsky, Brian A. and Thomas, Spencer W.
year 1980
title Transpline Curve Representation System
source April, 1980. 19 p. : ill. includes bibliography
summary An interactive curve representation system has been developed based on the concept of transforming among several parametric spline curve formulations. The available formulations are the interpolatory spline, uniform B-spline, spline under tension, and NU-spline. The system implementation is described in the context of a sample design session
keywords computational geometry, curves, representation, splines
series CADline
last changed 2003/06/02 13:58
_id 4685
authors Barsky, Brian A.
year 1984
title A Description and Evaluation of Various 3-D Models
source IEEE Computer Graphics and Applications. January, 1984. vol. 4: pp. 38-52 : ill. Includes bibliography
summary The use of parametric curves and surfaces for object modeling in computer graphics is becoming increasingly popular. There is sometimes, however, a reluctance to use them because it seems that the added power they give is more than offset by the complexity of their formulations and their computations. The purpose of this article is to clarify their meanings and uses and show how much they have in common behind the diversity of their formulations. The author discusses the properties and benefits of using the parametric Hermite, Coons, Bezier, B-spline, and Beta-spline curve and surface formulations
keywords Hermite, Coons, curved surfaces, Bezier, curves, B- splines, computational geometry, computer graphics
series CADline
last changed 2003/06/02 10:24

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