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

_id	e91f
authors	Mitchell, W.J., Liggett, R.S. and Tan, M.
year	1990
title	Top-Down Knowledge-Based Design
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 137-148
summary	Traditional computer drafting systems and three- dimensional geometric modeling systems work in bottom-up fashion. They provide a range of graphic primitives, such as vectors, arcs, and splines, together with operators for inserting, deleting, combining, and transforming instances of these. Thus they are conceptually very similar to word processors, with the difference that they operate on two- dimensional or three-dimensional patterns of graphic primitives rather than one-dimensional strings of characters. This sort of system is effective for input and editing of drawings or models that represent existing designs, but provides little more help than a pencil when you want to construct from scratch a drawing of some complex object such as a human figure, an automobile, or a classical column: you must depend on your own knowledge of what the pieces are and how to shape them and put them together. If you already know how to draw something then a computer drafting system will help you to do so efficiently, but if you do not know how to begin, or how to develop and refine the drawing, then the efficiency that you gain is of little practical consequence. And accelerated performance, flashier color graphics, or futuristic three-dimensional modes of interaction will not help with this problem at all. By contrast, experienced expert graphic artists and designers usually work in top-down fashion-beginning with a very schematic sketch of the whole object, then refining this, in step-by-step fashion, till the requisite level of precision and completeness is reached. For example, a figure drawing might begin as a "stick figure" schema showing lengths and angles of limbs, then be developed to show the general blocking of masses, and finally be resolved down to the finest details of contour and surface. Similarly, an architectural drawing might begin as a parti showing just a skeleton of construction lines, then be developed into a single-line floor plan, then a plan showing accurate wall thicknesses and openings, and finally a fully developed and detailed drawing.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	ddss9503
id	ddss9503
authors	Wineman, Jean and Serrato, Margaret
year	1994
title	Visual and Spatial Analysis in Office Design
source	Second Design and Decision Support Systems in Architecture & Urban Planning (Vaals, the Netherlands), August 15-19, 1994
summary	The demands for rapid response to complex problems, flexibility, and other characteristics of today's workplace, such as a highly trained work force, have led many organizations to move from strict hierarchical structures to a more flexible project team organization. The organizational structure is broader and flatter, with greater independence given to organizational units, in this case the project teams. To understand the relationship between project team communication patterns and the design and layout of team space, a study was conducted of an architectural office before and after a move to new space. The study involved three project teams. Information was collected on individual communication patterns; perceptions of the ease of communication; and the effectiveness of the design and layout of physical space to support these communications. In order to provide guidance for critical decision-making in design, these communication data were correlated with a series of measures for the specification of team space enclosure and layout. These group/team space measures were adaptations of existing measures of individual work space, and included an enclosure measure, based on an enclosure measure developed by Stokols (1990); a measure of visual field, based on the "isovist" fields of Benedikt (1979); and an "integration" measure, based on the work of Hillier and Hanson (1984). Results indicate both linear and non-linear relationships between interaction patterns and physical space measures. This work is the initial stage of a research program to define a set of specific physical measures to guide the design of supportive work space for project teams and work groups within various types of organizations.
series	DDSS
email
last changed	2003/08/07 16:36

_id	ebb2
authors	Proctor, George
year	2000
title	Reflections on the VDS, Pedagogy, Methods
doi	https://doi.org/10.52842/conf.acadia.2000.015.2
source	ACADIA Quarterly, vol. 19, no. 1, pp. 15-16
summary	After having conducted a Digital Media based design studio at Cal Poly for six years, we have developed a body of experience I feel is worth sharing. When the idea of conducting a studio with the exclusive use of digital tools was implemented at our college, it was still somewhat novel, and only 2 short years after the first VDS- Virtual Design Studio (UBC, UHK et.al.-1993). When we began, most of what we explored required a suspension of disbelief on the part of both the students and faculty reviewers of studio work. In a few short years the notions we examined have become ubiquitous in academic architectural discourse and are expanding into common use in practice. (For background, the digital media component of our curriculum owes much to my time at Harvard GSD [MAUD 1989-91] and the texts of: McCullough/Mitchell 1990, 1994; McCullough 1998; Mitchell 1990,1992,1996; Tufte 1990; Turkel 1995; and Wojtowicz 1993; and others.)
series	ACADIA
email
last changed	2022/06/07 08:00

_id	eb5f
authors	Al-Sallal, Khaled A. and Degelman, Larry 0.
year	1994
title	A Hypermedia Model for Supporting Energy Design in Buildings
doi	https://doi.org/10.52842/conf.acadia.1994.039
source	Reconnecting [ACADIA Conference Proceedings / ISBN 1-880250-03-9] Washington University (Saint Louis / USA) 1994, pp. 39-49
summary	Several studies have discussed the limitations of the available CAAD tools and have proposed solutions [Brown and Novitski 1987, Brown 1990, Degelman and Kim 1988, Schuman et al 1988]. The lack of integration between the different tasks that these programs address and the design process is a major problem. Schuman et al [1988] argued that in architectural design many issues must be considered simultaneously before the synthesis of a final product can take place. Studies by Brown and Novitski [1987] and Brown [1990] discussed the difficulties involved with integrating technical considerations in the creative architectural process. One aspect of the problem is the neglect of technical factors during the initial phase of the design that, as the authors argued, results from changing the work environment and the laborious nature of the design process. Many of the current programs require the user to input a great deal of numerical values that are needed for the energy analysis. Although there are some programs that attempt to assist the user by setting default values, these programs distract the user with their extensive arrays of data. The appropriate design tool is the one that helps the user to easily view the principal components of the building design and specify their behaviors and interactions. Data abstraction and information parsimony are the key concepts in developing a successful design tool. Three different approaches for developing an appropriate CAAD tool were found in the literature. Although there are several similarities among them, each is unique in solving certain aspects of the problem. Brown and Novitski [1987] emphasize the learning factor of the tool as well as its highly graphical user interface. Degelman and Kim [1988] emphasize knowledge acquisition and the provision of simulation modules. The Windows and Daylighting Group of Lawrence Berkeley Laboratory (LBL) emphasizes the dynamic structuring of information, the intelligent linking of data, the integrity of the different issues of design and the design process, and the extensive use of images [Schuman et al 19881, these attributes incidentally define the word hypermedia. The LBL model, which uses hypermedia, seems to be the more promising direction for this type of research. However, there is still a need to establish a new model that integrates all aspects of the problem. The areas in which the present research departs from the LBL model can be listed as follows: it acknowledges the necessity of regarding the user as the center of the CAAD tool design, it develops a model that is based on one of the high level theories of human-computer interaction, and it develops a prototype tool that conforms to the model.
series	ACADIA
email
last changed	2022/06/07 07:54

_id	969c
authors	Barnes, Thomas
year	1990
title	Dynamic Interaction of Solids as a Design Tool
doi	https://doi.org/10.52842/conf.acadia.1990.029
source	From Research to Practice [ACADIA Conference Proceedings] Big Sky (Montana - USA) 4-6 October 1990, pp. 29-40
summary	Architectural form and order can sometimes be described as having dynamic characteristics. To capitalize on this notion, physical qualities (mass, velocity, material elasticity, and friction) are given to objects. The objects are set in motion and allowed to interact at will with each other and their environment. The physical qualities are the rules that govern the outcome of interactions. As a result, interactions can lead to affine transformations (translate, scale, rotate), reformations (topological editing), and/or deformations (geometrical editing) of the objects. The designer can investigate the effects of interaction between dynamic elements, vary their physical qualities, and evaluate the appropriateness of the outcome as a solution to the design problem.
series	ACADIA
last changed	2022/06/07 07:54

_id	a235
authors	Danahy, John W.
year	1990
title	Irises in a Landscape: An Experiment in Dynamic Interaction and Teaching Design Studio
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 363-376
summary	The capacity of most computer-aided design systems is inadequate to represent landscape architectural ideas and compute landscape scenes quickly. As part of our teaching agenda, we decided to write software for the Silicon Graphics Iris workstations to tackle this problem directly. This paper begins with a discussion of our concerns about the use of CAD tools in the representation of landscape architectural space. Secondly, we discuss the approach that Toronto takes to computing and teaching with particular emphasis on the use of computers to support an integrated representational work environment. Finally, a fourth-year design studio that used our software is reviewed. Static illustrations of the system are presented here, although there is a videotape that demonstrates the dynamic nature of the system.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	4b48
authors	Dourish, P.
year	1999
title	Where the Footprints Lead: Tracking down other roles for social navigation
source	Social Navigation of Information Space, eds. A. Munro, K. H. and D Benyon. London: Springer-Verlag, pp 15-34
summary	Collaborative Filtering was proposed in the early 1990's as a means of managing access to large information spaces by capturing and exploiting aspects of the experiences of previous users of the same information. Social navigation is a more general form of this style of interaction, and with the widening scope of the Internet as an information provider, systems of this sort have rapidly moved from early research prototypes to deployed services in everyday use. On the other hand, to most of the HCI community, the term social navigation" is largely synonymous with "recommendation systems": systems that match your interests to those of others and, on that basis, provide recommendations about such things as music, books, articles and films that you might enjoy. The challenge for social navigation, as an area of research and development endeavour, is to move beyond this rather limited view of the role of social navigation; and to do this, we must try to take a broader view of both our remit and our opportunities. This chapter will revisit the original motivations, and chart something of the path that recent developments have taken. Based on reflections on the original concerns that motivated research into social navigation, it will explore some new avenues of research. In particular, it will focus on two. The first is social navigation within the framework of "awareness" provisions in collaborative systems generally; and the second is the relationship of social navigation systems to spatial models and the ideas of "space" and "place" in collaborative settings. By exploring these two ideas, two related goals can be achieved. The first is to draw attention to ways in which current research into social navigation can be made relevant to other areas of research endeavour; and the second is to re-motivate the idea of "social navigation" as a fundamental model for collaboration in information-seeking."
series	other
last changed	2003/04/23 15:50

_id	3207
authors	Emmerik, Maarten J.G.M. van
year	1990
title	Interactive design of parameterized 3D models by direct manipulation
source	Delft University of Technology
summary	The practical applicability of a computer-aided design system is strongly influenced by both the user interface and the internal model representation. A well designed user interface facilitates the communication with the system by offering an intuitive environment for for specification and representation of model information. An internal model representation, capable of storing geometric, topological and hierarchical dependencies between components in a model, increases the efficiency of the system by facilitating modification and elaboration of the model during the different stages of the design process. The subject of this thesis is the integration of a high level parameterized model representation with direct manipulation interface techniques for the design of three-dimensional objects. A direct manipulation interface enables the user to specify a model by interaction on a graphical representation, as an alternative for an abstract and error-prone apha-numerical dialogue style. A high level model representation is obtained by using a procedural modeling language with general purpose control structures, including arithmetic and logical expressions, repetition, conditionals, functions and procedures, and dedicated data types such as coordinate systems, geometric primitives and geometric constraints. The language interpreter is interconnected with a graphical interface, an incremental constraint solver and a geometrical modeler, using visual programming techniques. The developed techniques are implemented in a modeling system called GeoNode. The system incorporates paradigms of object-oriented design, with respect to both the user interface and to the system implementation. The applicability of the presented techniques is illustrated by examples in application domains such as solid modeling, kinematic analysis, feature modeling and top-down design.
keywords	CAD/CAM
series	thesis:PhD
last changed	2003/02/12 22:37

_id	e892
authors	Kacmar, Charles John
year	1990
title	PROXHY: a Process -Oriented Extensible Hypertext Architecture
source	Texas A&M University
summary	This research describes a new architecture for hypertext environments. The architecture merges the process, object-oriented, and hypertext models to provide hypertext services to object-based, distributed, application components. Through this architecture, applications are integrated to form a comprehensive hypertext computing environment, allowing links to connect applications or objects in different applications. The architecture separates hypertext and application functionality so that multiple applications can use the facilities of a common hypertext layer. The design of the architecture is such that components can be extended or tailored in order to support future applications, multimedia objects, or the needs of specific applications or users. The process-based, object-oriented framework allows objects of arbitrary complexity to live and interact in a hypertext world. Additionally, the protocol and facilities which support component interaction provide location transparency, arbitrary object granularity, and parallel computation over a network. This dissertation provides a conceptual model of hypertext and a general architecture for hypertext system construction. Related literature from object-oriented programming, operating systems, multimedia applications, and database is discussed in terms of the architecture. A hypertext data model, computational model, and hypertext system taxonomy are used to discuss the capabilities of current hypertext systems. Interaction scenarios are provided in order to illustrate object interaction and the distribution of work among the components of the architecture. A prototype system, implemented to demonstrate the feasibility of the architecture, is discussed. The prototype illustrates all aspects of the architecture including distributed application and hypertext components, cross-application linking, and anchors acting as proxy objects for applications. Application scenarios, problems and limitations, and future research issues provide an understanding of the power of the architecture and its potential for impacting the design of next-generation hypertext systems.
series	thesis:PhD
last changed	2003/02/12 22:37

_id	8833
authors	Kalay, Yehuda E., Swerdloff, Lucien M. and Majkowski, Bruce R. (et al)
year	1990
title	Process and Knowledge in Design Computation
source	Journal of Architectural Education. February, 1990. includes bibliography
summary	The challenge of understanding the many facets of design has been a central issue in attempting to computationally define design processes and knowledge. The historical progression of computers in design has been characterized by high aspirations repeatedly humbled by the complexity of design problems. Fundamental questions concerning the role and impact of computers in design should be re-examined in light of new developments in Computer-Aided Design (CAD) and Artificial Intelligence (AI), and the progressive understanding of design itself. At the heart of these issues must lie a mutual understanding of the respective traits of design and computation, and the balance of interaction between them. In this paper two avenues, expressed in terms of mappings between design and computation, are explored with the intention of clarifying the relationship between the theories of design and computation. First, the relationship between models of the design process and computational search strategies is explored. Several paradigms (problem solving, puzzle making, and constraint satisfying), which demonstrate a breadth of approaches to modeling design, are presented along with their computational implications. Second, relationships between design knowledge and computational representation schemes are discussed. Emphasis is placed on drawing from cognitive and computational knowledge representation schemes to represent design knowledge. Finally, some thoughts on integrating these design models and knowledge representation schemes into computer systems to assist designers are discussed
keywords	design process, knowledge, representation, architecture
series	CADline
email
last changed	2003/06/02 13:58

_id	ab9c
authors	Kvan, Thomas and Kvan, Erik
year	1999
title	Is Design Really Social
source	International Journal of Virtual Reality, 4:1
summary	There are many who will readily agree with Mitchell's assertion that "the most interesting new directions (for computer-aided design) are suggested by the growing convergence of computation and telecommunication. This allows us to treat designing not just as a technical process... but also as a social process." [Mitchell 1995]. The assumption is that design was a social process until users of computer-aided design systems were distracted into treating it as a merely technical process. Most readers will assume that this convergence must and will lead to increased communication between design participants, that better social interaction leads to be better design. The unspoken assumption appears to be that putting the participants into an environment with maximal communication channels will result in design collaboration. The tools provided, therefore, must permit the best communication and the best social interaction. We see a danger here, a pattern being repeated which may lead us into less than useful activities. As with several (popular) architectural design or modelling systems already available, however, computer system implementations all too often are poor imitations manual systems. For example, few in the field will argue with the statement that the storage of data in layers in a computer-aided drafting system is an dispensable approach. Layers derive from manual overlay drafting technology [Stitt 1984] which was regarded as an advanced (manual) production concept at the time many software engineers were specifying CAD software designs. Early implementations of CAD systems (such as RUCAPS, GDS, Computervision) avoided such data organisation, the software engineers recognising that object-based structures are more flexible, permitting greater control of data editing and display. Layer-based systems, however, are easier to implement in software, more familiar to the user and hence easier to explain, initially easier to use but more limiting for an experienced and thoughtful user, leading in the end to a lesser quality in resultant drawings and significant problems in output control (see Richens [1990], pp. 31-40 for a detailed analysis of such features and constraints). Here then we see the design for architectural software faithfully but inappropriately following manual methods. So too is there a danger of assuming that the best social interaction is that done face-to-face, therefore all collaborative design communications environments must mimic face-to-face.
series	journal paper
email
last changed	2003/05/15 10:29

_id	aea2
authors	Laurel, B. (ed.)
year	1990
title	The Art of Human-Computer Interface Design
source	New York: Addison-Wesley.
summary	Human-computer interface design is a new discipline. So new in fact, that Alan Kay of Apple Computer quipped that people "are not sure whether they should order it by the yard or the ton"! Irrespective of the measure, interface design is gradually emerging as a much-needed and timely approach to reducing the awkwardness and inconveniences of human-computer interaction. "Increased cognitive load", "bewildered and tired users" - these are the byproducts of the "plethora of options and the interface conventions" faced by computer users. Originally, computers were "designed by engineers, for engineers". Little or no attention was, or needed to be, paid to the interface. However, the pervasive use of the personal computer and the increasing number and variety of applications and programs has given rise to a need to focus on the "cognitive locus of human-computer interaction" i.e. the interface. What is the interface? Laurel defines the interface as a "contact surface" that "reflects the physical properties of the interactors, the functions to be performed, and the balance of power and control." (p.xiii) Incorporated into her definition are the "cognitive and emotional aspects of the user's experience". In a very basic sense, the interface is "the place where contact between two entities occurs." (p.xii) Doorknobs, steering wheels, spacesuits-these are all interfaces. The greater the difference between the two entities, the greater the need for a well-designed interface. In this case, the two very different entities are computers and humans. Human-conputer interface design looks at how we can lessen the effects of these differences. This means, for Laurel, empowering users by providing them with ease of use. "How can we think about it so that the interfaces we design will empower users?" "What does the user want to do?" These are the questions Laurel believes must be asked by designers. These are the questions addressed directly and indirectly by the approximately 50 contributors to The Art of Human-Computer Interface Design. In spite of the large number of contributors to the book and the wide range of fields with which they are associated, there is a broad consensus on how interfaces can be designed for empowerment and ease of use. User testing, user contexts, user tasks, user needs, user control: these terms appear throughout the book and suggest ways in which design might focus less on the technology and more on the user. With this perspective in mind, contributor D. Norman argues that computer interfaces should be designed so that the user interacts more with the task and less with the machine. Such interfaces "blend with the task", and "make tools invisible" so that "the technology is subervient to that goal". Sellen and Nicol insist on the need for interfaces that are 'simple', 'self-explanatory', 'adaptive' and 'supportive'. Contributors Vertelney and Grudin are interested in interfaces that support the contexts in which many users work. They consider ways in which group-oriented tasks and collaborative efforts can be supported and aided by the particular design of the interface. Mountford equates ease of use with understating the interface: "The art and science of interface design depends largely on making the transaction with the computer as transparent as possible in order to minimize the burden on the user".(p.248) Mountford also believes in "making computers more powerful extensions of our natural capabilities and goals" by offering the user a "richer sensory environment". One way this can be achieved according to Saloman is through creative use of colour. Saloman notes that colour can not only impart information but that it can be a useful mnemonic device to create associations. A richer sensory environment can also be achieved through use of sound, natural speech recognition, graphics, gesture input devices, animation, video, optical media and through what Blake refers to as "hybrid systems". These systems include additional interface features to control components such as optical disks, videotape, speech digitizers and a range of devices that support "whole user tasks". Rich sensory environments are often characteristic of game interfaces which rely heavily on sound and graphics. Crawford believes we have a lot to learn from the design of games and that they incorporate "sound concepts of user interface design". He argues that "games operate in a more demanding user-interface universe than other applications" since they must be both "fun" and "functional".
series	other
last changed	2003/04/23 15:14

_id	e7a7
authors	Madrazo, Leandro
year	1990
title	The Integration of Computer Modeling in Architectural Design
doi	https://doi.org/10.52842/conf.acadia.1990.103
source	From Research to Practice [ACADIA Conference Proceedings] Big Sky (Montana - USA) 4-6 October 1990, pp. 103-116
summary	The integration of computers in architectural design is explored from the perspective of both architectural education and professional practice. The main part of this paper attempts to define the conditions necessary for an effective interaction between computers and architects in the process of design. In the second part, a specific example, developed by the author during the course of his practice, is used to illustrate the use of available systems in professional practice.
series	ACADIA
email
last changed	2022/06/07 07:59

_id	7449
authors	Medero Rocha, Isabel A. and Danckwardt, Voltaire
year	2000
title	Projeto Missões, Computação Gráfica - Multimídia da Reconstituição Computadorizada da Redução de São Miguel Arcanjo no Rio Grande do Sul - Brasil ("Missões" Project, Computer Graphics and Multimedia of the "Redução de São Miguel Arcanjo" Digital Reconstruction (Rio Grande do Sul, Brazil))
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. 191-193
summary	The Project Missions - Graphical Computation, recoups in a graphical and digital the pictures of the Church and the Reduction of São Miguel Arcanjo/RS/Brasil, allowing to the public a virtual stroll through the set at the time of its foundation in 1687. Initiate in 1990, the design refers the appropriation and implementation of the new computational technologies. The 3D model allows the dynamic visualization of the set, through aerial sights and walkthrough animations into the main streets and the inward of the central ship of the church. For the generation of the model, it was followed the principles of the architectural composition to decompose the parts, to be shaped, defining the architectural and composition elements. This COMPACT DISC, is one of the some midias of the Design Missions - Graphical Computation. In this proposal, the music was developed especially for the COMPACT DISC, looks for to reflect the poetical aspect of the interaction between light, shadow, of the inwards and exteriors, attenuating the technology of a virtual environment. In the integration between the art and the technology its recovered virtually, the poetical way, the memory of one of the icons of the identity of the Rio Grande do Sul, with the objective to keep alive, for the new generations, a patrimony that practically in ruins would have the souvenir of its lost real picture in the time.
series	SIGRADI
email
last changed	2016/03/10 09:55

_id	cf2011_p093
id	cf2011_p093
authors	Nguyen, Thi Lan Truc; Tan Beng Kiang
year	2011
title	Understanding Shared Space for Informal Interaction among Geographically Distributed Teams
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. 41-54.
summary	In a design project, much creative work is done in teams, thus requires spaces for collaborative works such as conference rooms, project rooms and chill-out areas. These spaces are designed to provide an atmosphere conducive to discussion and communication ranging from formal meetings to informal communication. According to Kraut et al (E.Kraut et al., 1990), informal communication is an important factor for the success of collaboration and is defined as ‚Äúconversations take place at the time, with the participants, and about the topics at hand. It often occurs spontaneously by chance and in face-to-face manner. As shown in many research, much of good and creative ideas originate from impromptu meeting rather than in a formal meeting (Grajewski, 1993, A.Isaacs et al., 1997). Therefore, the places for informal communication are taken into account in workplace design and scattered throughout the building in order to stimulate face-to-face interaction, especially serendipitous communication among different groups across disciplines such as engineering, technology, design and so forth. Nowadays, team members of a project are not confined to people working in one location but are spread widely with geographically distributed collaborations. Being separated by long physical distance, informal interaction by chance is impossible since people are not co-located. In order to maintain the benefit of informal interaction in collaborative works, research endeavor has developed a variety ways to shorten the physical distance and bring people together in one shared space. Technologies to support informal interaction at a distance include video-based technologies, virtual reality technologies, location-based technologies and ubiquitous technologies. These technologies facilitate people to stay aware of other‚Äôs availability in distributed environment and to socialize and interact in a multi-users virtual environment. Each type of applications supports informal interaction through the employed technology characteristics. One of the conditions for promoting frequent and impromptu face-to-face communication is being co-located in one space in which the spatial settings play as catalyst to increase the likelihood for frequent encounter. Therefore, this paper analyses the degree to which sense of shared space is supported by these technical approaches. This analysis helps to identify the trade-off features of each shared space technology and its current problems. A taxonomy of shared space is introduced based on three types of shared space technologies for supporting informal interaction. These types are named as shared physical environments, collaborative virtual environments and mixed reality environments and are ordered increasingly towards the reality of sense of shared space. Based on the problem learnt from other technical approaches and the nature of informal interaction, this paper proposes physical-virtual shared space for supporting intended and opportunistic informal interaction. The shared space will be created by augmenting a 3D collaborative virtual environment (CVE) with real world scene at the virtual world side; and blending the CVE scene to the physical settings at the real world side. Given this, the two spaces are merged into one global structure. With augmented view of the real world, geographically distributed co-workers who populate the 3D CVE are facilitated to encounter and interact with their real world counterparts in a meaningful and natural manner.
keywords	shared space, collaborative virtual environment, informal interaction, intended interaction, opportunistic interaction
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	0565
authors	Oxman, Robert and Oxman, Rivka
year	1990
title	The Computability of Architectural Knowledge
source	The Electronic Design Studio: Architectural Knowledge and Media in the Computer Era [CAAD Futures ‘89 Conference Proceedings / ISBN 0-262-13254-0] Cambridge (Massachusetts / USA), 1989, pp. 171-185
summary	In an important contribution to the theoretical foundation of design computing, Mitchell noted "an increasingly urgent need to establish a demonstrably sound, comprehensive, rigorously formalized theoretical foundation upon which to base practical software development efforts" (Mitchell, 1986). In this paper we propose such a theoretical framework. A basic assumption of this work is that the advancement of design computing is dependent upon the emergence of a rigorous formulation of knowledge in design. We present a model of knowledge in architectural design which suggests a promising conceptual basis for dealing with knowledge in computer-aided design systems. We require models which can represent the formal knowledge and manipulative operations of the designer in all of their complexity-that is formal models rather than just geometric models. Shape Grammars (Stiny,1980) represent an example of such models, and constitute a relatively high level of design knowledge as compared to, for example, use of symmetry operations to generate simple formal configurations. Building upon an understanding of the classes of design knowledge as the conceptual basis for formal modeling systems may contribute a new realization of the potential of the medium for design. This will require a comprehensive approach to the definition of architectural and design knowledge. We consider here the implications of a well-defined body of architectural and design knowledge for design education and the potential mutual interaction-in a knowledge-rich environment-of design learning and CAAD learning. The computational factors connected with the representation of design knowledge and its integration in design systems are among the key problems of CAAD. Mitchell's model of knowledge in design incorporates formal knowledge in a comprehensive, multi-level, hierarchical structure in which types of knowledge are correlated with computational concepts. In the main focus of this paper we present a structured, multi-level model of design knowledge which we discuss with respect to current architectural theoretical considerations. Finally, we analyze the computational and educational relevance of such models.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	29c2
authors	Ozel, Filiz
year	1991
title	An Intelligent Simulation Approach in Simulating Dynamic Processes in Architectural Environments
source	Computer Aided Architectural Design Futures: Education, Research, Applications [CAAD Futures ‘91 Conference Proceedings / ISBN 3-528-08821-4] Zürich (Switzerland), July 1991, pp. 177-190
summary	The implications of object-oriented data models and rule-based reasoning systems is being researched in a wide variety of application areas ranging from VLSI circuit design (Afsannanesh et al 1990) to architectural environments (Coyne et al 1990). The potential of this approach in the development of discrete event simulations is also being scrutinized (Birtwistle et al 1986). Such computer models are usually called "expert simulations" or "intelligent simulations". Typically rule-basing in such models allows the definition of intelligent-objects that can reason about the simulated dynamic processes through an inferencing system. The major advantage of this approach over traditional simulation languages is its ability to provide direct reference to real world objects and processes. The simulation of dynamic processes in architectural environments poses an additional Problem of resolving the interaction of architectural objects with other objects such as humans, water, smoke etc., depending on the process simulated. Object-oriented approach promises potential in solving this specific problem. The first part of this paper addresses expert simulation approach within the context of architectural settings, then the second part summarizes work done in the application of such an approach to an emergency egress simulation.
series	CAAD Futures
last changed	1999/04/07 12:03

_id	ga0222
id	ga0222
authors	Rocha, A. Medero and Danckwardt, Voltaire
year	2002
title	Projeto Missões, Computação Gráfica Multimídia da Reconstituição Computadorizada da Redução de São Miguel Arcanjo no Rio Grande do Sul - Brasil
source	International Conference on Generative Art
summary	The Design Missions - Graphical Computation, recoups in a graphical and digital the pictures of the Church and the Reduction of São Miguel Arcanjo, RS, Brasil, allowing to the public a virtual stroll through the set at the time of its foundation in 1687. Initiate in 1990, the design refers the appropriation and implementation of the new computational technologies. The 3D model allows the dynamic visualization of the set, through aerial sights and walkthrough animations into the main streets and the inward of the central ship of the church. For the generation of the model, it was followed the principles of the architectural composition to decompose the parts, to be shaped, defining the architectural and composition elements. This COMPACT DISC, is one of the some medias of the Design Missions - Graphical Computation. In this proposal, the music was developed especially for the COMPACT DISC, looks for to reflect the poetical aspect of the interaction between light, shadow, of the inwards and exteriors, attenuating the technology of a virtual environment. In the integration between the art and the technology its recovered virtually, the poetical way, the memory of one of the icons of the identity of the Rio Grande do Sul, with the objective to keep alive, for the new generations, a patrimony that practically in ruins would have the souvenir of its lost real picture in the time.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	bcb5
authors	Schrage, M.
year	1990
title	Shared Minds: The New Technologies of Collaboration
source	New York: Random House
summary	Collaboration is a fundamental yet underappreciated force in business, the arts and sciences, stresses Schrage, columnist for the Los Angeles Times. Most organizations, he observes, lack structures that allow people to pool their talents creatively. In place of the bastardized American notion of "teamwork," he advocates genuine collaborative interaction aided by "shared spaces" like blackboards or brainstorming sessions. One chapter demonstrates how shared computer screens can reduce the politics and boredom of corporate meetings. Though he sometimes belabors the obvious, Schrage has written a trailblazing guide to help people in diverse fields move from mere communication to true collaboration.
series	other
last changed	2003/04/23 15:14

_id	a7f0
authors	Van Emmerick, M.J.G.M.
year	1990
title	Interactive design of parameterized 3D models by direct manipulation
source	Delft University Press
summary	The practical applicability of a computer-aided design system is strongly influenced by both the user interface and the internal model representation. A well designed user interface facilitates the communication with the system by offering an intuitive environment for for specification and representation of model information. An internal model representation, capable of storing geometric, topological and hierarchical dependencies between components in a model, increases the efficiency of the system by facilitating modification and elaboration of the model during the different stages of the design process. The subject of this thesis is the integration of a high level parameterized model representation with direct manipulation interface techniques for the design of three-dimensional objects. A direct manipulation interface enables the user to specify a model by interaction on a graphical representation, as an alternative for an abstract and error-prone apha-numerical dialogue style. A high level model representation is obtained by using a procedural modeling language with general purpose control structures, including arithmetic and logical expressions, repetition, conditionals, functions and procedures, and dedicated data types such as coordinate systems, geometric primitives and geometric constraints. The language interpreter is interconnected with a graphical interface, an incremental constraint solver and a geometrical modeler, using visual programming techniques. The developed techniques are implemented in a modeling system called GeoNode. The system incorporates paradigms of object-oriented design, with respect to both the user interface and to the system implementation. The applicability of the presented techniques is illustrated by examples in application domains such as solid modeling, kinematic analysis, feature modeling and top-down design.
series	other
last changed	2003/04/23 15:14

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