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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Hits 1 to 20 of 34

_id 6105
authors Rasdorf, William J. and Fenves, Stephen J.
year 1986
title Constraint Enforcement in a Structural Design Database
source Journal of the Structural Division. American Society of Civil Engineers, December, 1986. vol. 112: pp. 2565-2577
summary During the design of a commercial structure, large amounts of information pertaining to all aspects of the design must be stored, accessed, and operated upon. A database management system (DBMS), composed of a central repository of data and the associated software for controlling accesses to it, provides one way to generate, represent, manage, and use this information. However, DBMSs are not presently structured in such a way that they can flexibly represent complex engineering constraint relationships, including those defined by codes, standards, and specifications. This paper examines structural design constraints and addresses the question of how they can be incorporated into DBMSs. It presents four representations of engineering constraints: the text of a design specification, the equations extracted from the specification, the dependency network among the constrained data items, and a relational DBMS model. The database model was implemented using a commercially available DBMS and the limitations of the implementation are explored. What is new in this DBMS model is that a constraint dependency subnetwork is associated directly with the stored data that it constrains. The implemented result is a new abstraction, consisting of a relation and a set of computations and checks, that enforces the relationships embodied in the dependency network. The database user need only initially define a set of rules and computed attributes. These are then used by the DBMS to automatically perform the appropriate checks and assignments. The database user is, to a significant degree, free of constraint checking concerns because the system itself knows what to do
keywords constraints management, civil engineering, database, DBMS
series CADline
last changed 2003/06/02 13:58

_id avocaad_2001_09
id avocaad_2001_09
authors Yu-Tung Liu, Yung-Ching Yeh, Sheng-Cheng Shih
year 2001
title Digital Architecture in CAD studio and Internet-based competition
source AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary Architectural design has been changing because of the vast and creative use of computer in different ways. From the viewpoint of designing itself, computer has been used as drawing tools in the latter phase of design (Mitchell 1977; Coyne et al. 1990), presentation and simulation tools in the middle phase (Liu and Bai 2000), and even critical media which triggers creative thinking in the very early phase (Maher et al. 2000; Liu 1999; Won 1999). All the various roles that computer can play have been adopted in a number of professional design corporations and so-called computer-aided design (CAD) studio in schools worldwide (Kvan 1997, 2000; Cheng 1998). The processes and outcomes of design have been continuously developing to capture the movement of the computer age. However, from the viewpoint of social-cultural theories of architecture, the evolvement of design cannot be achieved solely by designers or design processes. Any new idea of design can be accepted socially, culturally and historically only under one condition: The design outcomes could be reviewed and appreciated by critics in the field at the time of its production (Csikszentmihalyi 1986, 1988; Schon and Wiggins 1992; Liu 2000). In other words, aspects of design production (by designers in different design processes) are as critical as those of design appreciation (by critics in different review processes) in the observation of the future trends of architecture.Nevertheless, in the field of architectural design with computer and Internet, that is, so-called computer-aided design computer-mediated design, or internet-based design, most existing studies pay more attentions to producing design in design processes as mentioned above. Relatively few studies focus on how critics act and how they interact with designers in the review processes. Therefore, this study intends to investigate some evolving phenomena of the interaction between design production and appreciation in the environment of computer and Internet.This paper takes a CAD studio and an Internet-based competition as examples. The CAD studio includes 7 master's students and 2 critics, all from the same countries. The Internet-based competition, held in year 2000, includes 206 designers from 43 counties and 26 critics from 11 countries. 3 students and the 2 critics in the CAD studio are the competition participating designers and critics respectively. The methodological steps are as follows: 1. A qualitative analysis: observation and interview of the 3 participants and 2 reviewers who join both the CAD studio and the competition. The 4 analytical criteria are the kinds of presenting media, the kinds of supportive media (such as verbal and gesture/facial data), stages of the review processes, and interaction between the designer and critics. The behavioral data are acquired by recording the design presentation and dialogue within 3 months. 2. A quantitative analysis: statistical analysis of the detailed reviewing data in the CAD studio and the competition. The four 4 analytical factors are the reviewing time, the number of reviewing of the same project, the comparison between different projects, and grades/comments. 3. Both the qualitative and quantitative data are cross analyzed and discussed, based on the theories of design thinking, design production/appreciation, and the appreciative system (Goodman 1978, 1984).The result of this study indicates that the interaction between design production and appreciation during the review processes could differ significantly. The review processes could be either linear or cyclic due to the influences from the kinds of media, the environmental discrepancies between studio and Internet, as well as cognitive thinking/memory capacity. The design production and appreciation seem to be more linear in CAD studio whereas more cyclic in the Internet environment. This distinction coincides with the complementary observations of designing as a linear process (Jones 1970; Simon 1981) or a cyclic movement (Schon and Wiggins 1992). Some phenomena during the two processes are also illustrated in detail in this paper.This study is merely a starting point of the research in design production and appreciation in the computer and network age. The future direction of investigation is to establish a theoretical model for the interaction between design production and appreciation based on current findings. The model is expected to conduct using revised protocol analysis and interviews. The other future research is to explore how design computing creativity emerge from the process of producing and appreciating.
series AVOCAAD
email
last changed 2005/09/09 10:48

_id a6a9
authors Goebel, Martin and Kroemker, Detlef
year 1986
title A Multi-Microprocessor GKS Workstation
source IEEE Computer Graphics and Applications July, 1986. vol. 6: pp. 54-60 : ill. includes bibliography.
summary Implementers of graphical application systems hesitate to interface their applications to the GKS standard not only because GKS functionality seems to be less sufficient for a particular application but also because the use of GKS -- as it is offered in portable software implementations -- usually means a loss of system performance. This article describes an installation of GKS on a multi-microprocessor that is based on functional distribution principles as well as on the object-oriented distribution of a graphics system. The main concepts and advantages of a GKS workstation using more than one processing unit with at least one output pipeline are described. The flexibility of this approach opens a perspective view to a GKS workstation that is configurable to application requirements
keywords standards, GKS, graphs, systems, hardware
series CADline
last changed 2003/06/02 10:24

_id e43b
authors Blasi, D. and Scudo, G.
year 1986
title Experience of Output Visualisation in Thermal Performance Analysis and Design.
doi https://doi.org/10.52842/conf.ecaade.1986.186
source Teaching and Research Experience with CAAD [4th eCAADe Conference Proceedings] Rome (Italy) 11-13 September 1986, pp. 186-191
summary GKS didactic application in output visualisation of thermal behaviour simulation in building analysis and design. Energy analysis is performed by BEETA (Built Environment Energy Test and Analysis) code. It is a numerical simulation code which allows to simulate the building multizone thermal behaviour with different passive devices (Direct Gain, Greenhouse, Solar Chimney, Trompe, Convective and Radiative Cooling etc.). The code is based on thermal network theory and methods; the set of thermal equation is normally solved every hour or less by the coefficient matrix inversion method. An interactive loop is provide for dealing with non- linear thermal conductance problems with continuous or step variation (i.e. air mixing through an opening between two spaces, Trompe wall convective loop, etc.) The code allows to take into account urban obstructions and shading devices.

series eCAADe
last changed 2022/06/07 07:52

_id 04dd
authors Zozaya-Gorostiza and Hendrickson, Carlos and Chris
year 1986
title A Network Representation and Algorithm for Task Planning
source 23 p. : ill Pittsburgh, PA: Engineering Design Research Center CMU, December, 1986. EDRC-12-08-87. includes bibliography.
summary An activity planning algorithm based on a network representations of conditions and actions is presented. The algorithm performs backward expansions on each desired condition in order to express them as a combination of initial conditions and actions. A global problem network of actions and conditions is used to represent the history of successful conditions expansions. This representation maintains consistency and improves the efficiency of search procedure. Interpretation of this problem network leads to an actions network from which feasible plans are directly obtained. The network algorithm was implemented in LISP and is applied here to solve blockworld problems similar to those found in the artificial intelligence planning literature. However, the algorithm and the network representation are general and intended to be used as an analytical tool in planning systems that formulate sequences of multiple actions
keywords algorithms, planning, networks, representation, AI
series CADline
last changed 2003/06/02 13:58

_id 678e
authors Aish, Robert
year 1986
title Three-dimensional Input and Visualization
source Computer-Aided Architectural Design Futures [CAAD Futures Conference Proceedings / ISBN 0-408-05300-3] Delft (The Netherlands), 18-19 September 1985, pp. 68-84
summary The aim of this chapter is to investigate techniques by which man-computer interaction could be improved, specifically in the context of architectural applications of CAD. In this application the object being designed is often an assembly of defined components. Even if the building is not actually fabricated from such components, it is usually conceptualized in these terms. In a conventional graphics- based CAD system these components are usually represented by graphical icons which are displayed on the graphics screen and arranged by the user. The system described here consists of three- dimensional modelling elements which the user physically assembles to form his design. Unlike conventional architectural models which are static (i.e. cannot be changed by the users) and passive (i.e. cannot be read by a CAD system), this model is both 'user generated' and 'machine readable'. The user can create, edit and view the model by simple, natural modelling activities and without the need to learn complex operating commands often associated with CAD systems. In particular, the user can view the model, altering his viewpoint and focus of attention in a completely natural way. Conventional computer graphics within an associated CAD system are used to represent the detailed geometry which the different three-dimensional icons may represent. In addition, computer graphics are also used to present the output of the performance attributes of the objects being modelled. In the architectural application described in this chapter an energy- balance evaluation is displayed for a building designed using the modelling device. While this system is not intended to offer a completely free-form input facility it can be considered to be a specialist man-machine interface of particular relevance to architects or engineers.
series CAAD Futures
email
last changed 2003/11/21 15:15

_id a35a
authors Arponen, Matti
year 2002
title From 2D Base Map To 3D City Model
source UMDS '02 Proceedings, Prague (Czech Republic) 2-4 October 2002, I.17-I.28
summary Since 1997 Helsinki City Survey Division has proceeded in experimenting and in developing the methods for converting and supplementing current digital 2D base maps in the scale 1:500 to a 3D city model. Actually since 1986 project areas have been produced in 3D for city planning and construction projects, but working with the whole map database started in 1997 because of customer demands and competitive 3D projects. 3D map database needs new data modelling and structures, map update processes need new working orders and the draftsmen need to learn a new profession; the 3D modeller. Laser-scanning and digital photogrammetry have been used in collecting 3D information on the map objects. During the years 1999-2000 laser-scanning experiments covering 45 km2 have been carried out utilizing the Swedish TopEye system. Simultaneous digital photography produces material for orto photo mosaics. These have been applied in mapping out dated map features and in vectorizing 3D buildings manually, semi automatically and automatically. In modelling we use TerraScan, TerraPhoto and TerraModeler sw, which are developed in Finland. The 3D city model project is at the same time partially a software development project. An accuracy and feasibility study was also completed and will be shortly presented. The three scales of 3D models are also presented in this paper. Some new 3D products and some usage of 3D city models in practice will be demonstrated in the actual presentation.
keywords 3D City modeling
series other
email
more www.udms.net
last changed 2003/11/21 15:16

_id b25c
authors Bergeson, Donald E. and Cetin, Randal F.
year 1986
title ADAM - Architectural Design Applications Model
doi https://doi.org/10.52842/conf.acadia.1986.037
source ACADIA Workshop ‘86 Proceedings - Houston (Texas - USA) 24-26 October 1986, pp. 37-54
summary This paper will describe ADAM, a project to explore the potential for interfacing independent graphics software for the purpose of developing a microcomputer based design system. This system will be implemented in three undergraduate design studios at the University of Illinois (Urbana-Champaign) School of Architecture. The three design studios are part of an experimental project to determine the usefulness of computers in the architectural design curriculum. The concept used throughout the design of this system is: "make use of what already exists, but use it smoothly together in such a way that the management system is totally invisible to the user." Many low- end quality graphics software packages are commercially available. Each has the capacity to address some aspect of the architectural design process, none will do it all . The problem is a lack of compatibility between software. ADAM is a management system designed to invisibly control and interface the use of an assembly of graphics programs and data base management systems to achieve compatibility. Because of these compatible interfaces, new and varied design tools can be created from existing software..
series ACADIA
last changed 2022/06/07 07:54

_id 4361
authors Bishop, G. and Weimer, D.M.
year 1986
title Fast Phong Shading
source Computer Graphics (20) 4 pp. 103-106
summary Computer image generation systems often represent curved surfaces as a mesh of polygons that are shaded to restore a smooth appearance. Phong shading is a well known algorithm for producing a realistic shading but it has not been used by real-time systems because of the 3 additions, 1 division and 1 square root required per pixel for its evaluation. We describe a new formulation for Phong shading that reduces the amount of computation per pixel to only 2 additions for simple Lambertian reflection and 5 additions and 1 memory reference for Phong's complete reflection model. We also show how to extend our method to compute the specular component with the eye at a finite distance from the scene rather than at infinity as is usually assumed. The method can be implemented in hardware for real-time applications or in software to speed image generation for almost any system.
series journal paper
last changed 2003/11/21 15:16

_id f5db
authors Brooks, F.P.
year 1986
title Walkthrough - A Dynamic Graphics System for Simulating Virtual Buildings
source Proceedings 1986 Workshop on Interactive 3D Graphics. ACM: 9-22
summary As part of our graphics research into virtual worlds, we are building a tool for an architect and his client to use for rapid prototyping of buildings by visually "walking through" them in order to refine specifications. Our first prototype simulated the new UNC Computer Science building with some 8000 polygons. BSP-tree software on the Adage Ikonas gave a colored, shaded perspective view every 3-5 seconds while the user moved a cursor in real-time over floorplans shown on the Vector-General 3300. The current (third) version uses Pixel-Planes to generate 9 updates/second, view images shown 4' x 6' by projector. Active short- and long-term research questions include speed-up, stereo, a 6-DoF interface with eye-level defaults, and an interactive model-building, model-changing system.
series other
last changed 2003/11/21 15:16

_id 295a
authors De Grassi, Mario
year 1986
title Rational Data Model: An Approach for Building Design and Planning
doi https://doi.org/10.52842/conf.ecaade.1986.231
source Teaching and Research Experience with CAAD [4th eCAADe Conference Proceedings] Rome (Italy) 11-13 September 1986, pp. 231-242
summary A model of the building object utilizing the typical formal structures of the relational data model is presented, which allows interactive design procedures to be foreseen and at the same time the use of the model for a data base containing information on building objects, to be used for normative planning and for building design.
series eCAADe
last changed 2022/06/07 07:55

_id 40fe
authors Gero, John S., Oxman, Rivka E. and Manago, C.
year 1986
title Graphics and Expert Systems
source AUSGRAPH '86 Australian Conference on Computer Graphics (4th : 1986 : Sydney). pp. 25-29 : ill. includes bibliography
summary Expert systems are a novel software technology which aim to model the behavior and knowledge of human experts. This paper presents two modes of interaction between graphics and expert systems in the domain of computer-aided design. The first concerns the interaction between an expert system and commercial CAD systems. The second demonstrates how expert systems can control design oriented graphical representations. Examples from both modes are presented from systems developed at Sydney University
keywords computer graphics, expert systems, CAD, architecture
series CADline
email
last changed 2003/06/02 10:24

_id 2363
authors Gross, Mark Donald
year 1986
title Design as exploring constraints
source Massachusetts Institute of Technology, Dept. of Architecture
summary A theory of designing is proposed, developed, and illustrated with examples from the domain of physical form. Designing is seen as the exploration of alternative sets of constraints and of the regions of alternative solutions they bound. Designers with different objectives reach different solutions within the same set of constraints, as do designers with the same objectives operating under different constraints. Constraints represent design rules, relations, conventions, and natural laws to be maintained. Some constraints and objectives are given at the outset of a design but many more are adopted along the way. Varying the constraints and the objectives is part of the design process. The theory accounts for various kinds of expertise in designing: knowledge of particular constraints in a design domain; inference--calculating the consequences of design decisions; preference--using objectives to guide decision-making; and partitioning--skill in dividing a large and complicated design into sets of simpler pieces, and understanding the dependencies between decisions. The ability to manage ambiguity and vagueness is an important aspect of design expertise. A computational model supporting the theory is proposed and its implementation discussed briefly. The constraint explorer, a computational environment for designing based on constraint descriptions is described. We see how the constraint explorer might be used in connection with a simple space- planning problem. The problem is taken from the procedures of the Stichting Architecten Research (S.A.R.), a specific architectural design methodology developed to help architects systematically explore layout variability in alternative floorplan designs. Finally, a selected review of related work in constraint-based programming environments, architectural design methods, and the intersection of the two fields is presented.
series thesis:PhD
email
more http://dmg.caup.washington.edu
last changed 2003/03/15 06:49

_id 896b
authors Haider, Jawaid
year 1986
title A Conceptual Framework for Communication -Instruction in Architectural Design
source Pennsylvania State University
summary Existing design models, it is generally acknowledged, are inadequate to deal with the complexity of contemporary situations; and an assessment of self-conscious design manifests a slow development in the power and scope of conceptualizing. The quality of knowledge and conceptual tools available to the designer largely determine his ability to conceive and accomplish; conversely, the limitations of method are reflected in design solutions. Some emerging social problem-solving paradigms, which seek to construct a cognitive psychology of problem solving, have a direct relevance to architectural design. Notwithstanding the traditional criticism and scepticism, problem solving is predicated by task environment and problem space as these have a significant impact on design synthesis. Despite a rigorous search for theoretical perspectives and methods, the concern for the quality of the physical environment persists unabated. Historically, architecture has depended on other disciplines for its theoretical insight; but the application of borrowed theories without a viable framework for translation has often resulted in misinterpretation. Aggravating the problem is the art-science controversy which has consequences for architectural practice and education. What is required is a unified approach encompassing the scientific and artistic modes of inquiry. But a unified perspective, involving vast and disparate areas of human knowledge, demands a conceptual framework for integrative learning. The proposed model of this study provides such a framework and calls for a re-examination of the conventional boundaries of design disciplines. It advocates an interdisciplinary approach and recognizes the design process as inherently a learning process; this shifts the emphasis from product to process and allows students to plan and assess their own design/learning experience. While the study focuses on substantive issues, it identifies a strategy for integrative learning applicable within the existing context of design education. Despite its untested nature, the proposed model can become a vehicle for stimulating coordination of all facets of human knowledge and experience toward creative design synthesis. It inculcates a sense of critical assessment of generative ideas by presenting a conceptually clearer picture of the design process to elicit a response to and a better understanding of the task environment of architecture.
series thesis:PhD
email
last changed 2003/02/12 22:37

_id 2b40
authors Hanson, N.L.R. and Radford, Antony D.
year 1986
title Living on the Edge : A Grammar For Some Country Houses by Glenn Murcutt
source Architecture Australia. 1986. vol. 75: pp. 66-73
summary Glenn Murcutt is an award-winning Australian architect whose work displays a consistent pattern of development in its response to the environment and brief. A set of syntactic and abductive rules is developed that models the generation of a subset of his work. The model and the architect's response to its operation is described
keywords architecture, shape grammars, applications
series CADline
last changed 2003/06/02 13:58

_id 2156
authors Hashimshony, Rivka, Roth, J. and Wachman, A.
year 1986
title A Model for Generating Floor-Plans in Multi-Story Buildings
source International Journal of Design Computing. April, 1986. vol. 1: pp. 136-157 : ill. includes bibliography
summary A graph-theoretic method for computer generation of rectangular floor plans for multi-story buildings is outlined. The problem formulation takes account of adjacency requirements of rooms, dimensional constraints, and the need for vertical alignments of elements such as stairs and elevators. The solution method is to first turn the required adjacencies graph into a layout graph by adding edges, then color and direct the layout graph, cut the colored directed graph into two subgraphs, and finally use the PERT technique to dimension the plan. An example problem of design of a medical clinic is formulated and solved using this method
keywords space allocation, architecture, CAD, floor plans, synthesis, graphs, dimensioning
series CADline
last changed 2003/06/02 10:24

_id caadria2009_053
id caadria2009_053
authors Hu, Hui-Jiun; Jen Yen
year 2009
title Conceptual Model for Design Team toward Website Construction
doi https://doi.org/10.52842/conf.caadria.2009.503
source Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 503-510
summary Since mid 1990s internet has been developing rapidly to become the most booming and emerging media in late history and play an important role in living. Therefore, how to design an interface of easy to use has become an important issue pertaining to Human Computer Interaction. Norman (1986) proposed in the human computer interaction, there is a design model in the mind of designer. In turn, the designer will follow design model and to design a set of system image that is functional, learnable, and usable. Therefore, we want to understand the critical factor of influencing toward website construction, we should find out the mental model that web design team at first. In this paper, we using the Interactive Qualitative Analysis (IQA) approach. The data collection method of the participant of the focus group’s silent brainstorming is adopted. Further analyze web design team’s the conceptual model on website construction through inductive coding and axial coding. The result shows the affinities of 9 web design team is thus produced. And, Business Decision, Team Performance, Self-Fulfillment and Entrepreneur Communication are main influence factor. These factors can lead trend and goal of a website.
keywords website construction; web design team; conceptual model; Interactive Qualitative Analysis (IQA)
series CAADRIA
email
last changed 2022/06/07 07:50

_id a833
authors Jong, M. de
year 1986
title A Spatial Relational Reference Model (3RM)
source Computer-Aided Architectural Design Futures [CAAD Futures Conference Proceedings / ISBN 0-408-05300-3] Delft (The Netherlands), 18-19 September 1985, pp. 85-91
summary In this chapter we hope to provide the reader with an impression of the objective, framework and possibilities of 3RM in the construction industry. In Dutch, 3RM stands for 'Ruimtelijk Relationeel Referentie Model' (Spatial Relational Reference Model). The model could begin to be used as an information-bearer in the building industry within which the specific trade information for each of the building participants could be interrelated, including drafting symbolism, building costs, physical qualities and building regulations. In this way, the model can be used as a means to a more efficient running of the building process and enabling the integration of information, at project level, provided by various building participants. The project should be defined in the same way as is a typical architectural project, whereby the actual development as well as the project management is carried out by architects. For the time being, development is limited to integral use at the design stage, but it also offers sufficient expansion possibilities to be able to function as a new communications model throughout the complete building process. We shall first provide information as to the origin, the objective and the execution of the project. Thereafter, we shall attempt to state the theoretical information problem within the building industry and the solution to this offered through 3RM. Finally, we shall report upon the results of the first phase of the 3RM project.
series CAAD Futures
last changed 1999/04/03 17:58

_id 8e43
authors Katz, R., Chang, E. and Bhateja, R.
year 1986
title Version Modeling concepts for Computer-Aided Design Databases
source ACM SIGMOD Intl. Conf On Management of Data
summary We describe a semantic object-oriented data model for representing how a complex design database evolves over time. Structural relationships, introduced by the data management system, are imposed on the objects created by existing CAD tools. The relationships supported by the model are (1) version histories, (2) time-varying configurations, and (3) equivalences among objects of different types. We describe mechanisms for (1) identifying current versions, (2) supporting dynamic configuration binding, and (3) verifying equivalence relationships. The data model is being implemented in a Version Server, under development at the University of California, Berkeley.
series other
last changed 2003/04/23 15:14

_id 682d
authors Kim, Uk
year 1986
title Model for an Integrated Design Evaluation System using Knowledge Bases
doi https://doi.org/10.52842/conf.acadia.1986.204
source ACADIA Workshop ‘86 Proceedings - Houston (Texas - USA) 24-26 October 1986, pp. 204-215
summary Computer-aided architectural design (CAAD) systems need to be integrated so that one unified system can generate and do various analysis and evaluation of building models. A data system can not solve this problem because all design concepts can not be stored in the database before the design is completed. As design stage proceeds, design concept and necessary information for analysis and evaluation become complex and detailed. In order to accommodate increasing entities and new relationships between them, knowledge-based systems are integrated into the database of building models. frame structure and production rules are adopted to represent knowledge about the database, and to represent evaluation rules respectively. The system is implemented in Prolog on an Apollo workstation.
series ACADIA
last changed 2022/06/07 07:52

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