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 61 to 80 of 98

_id e7cf
authors Eastman, Charles M. and Preiss, K.
year 1984
title A Review of Solid Shape Modelling Based on Integrity
source Computer Aided Design March, 1984. vol. 16: pp. 66-80 : ill. includes bibliography.
summary The potential benefits of using a canonical model for representing the shapes of solid objects has led to the design and implementation of a number of geometric modelers with varying capabilities. This paper reviews the approaches taken in solid modeling by defining the well-formedness conditions which must be implemented in any modeling system. The methods for satisfying the well-formedness constraints in the various solid modeling methods are reviewed, using the concept of integrity constraints. The incorporation of integrity constraints, both explicitly and implicitly, into solid modelers are considered, with particular focus on boundary modelers. The use of integrity constraints for defining shape families and assembly families are also presented. The result is a unified view of solid shape modeling systems that enables their classification and extension into particular application areas
keywords solid modeling, constraints, B-rep
series CADline
last changed 2003/05/17 08:15

_id 26de
authors Enderle, G., K. Kansy and Pfaff, G.
year 1984
title Computer Graphics Programming : GKS - the graphics standard
source 542 p. : ill. (some col.) Berlin: Springer-Verlag, 1984. includes bibliography: p. 527-532 and index. -- (Symbolic Computation Series)
summary Covers computer graphics programming on the basis of the Graphical Kernel System. It gives an overview over the GKS concepts, the history of the GKS design and the various system interfaces. A detailed description of the application of GKS functions both in PASCAL and FORTRAN is a significant part
keywords standards, computer graphics, GKS, programming
series CADline
last changed 2003/06/02 08:24

_id a461
authors Gerzso, Miguel J. and Buchmann, Alejandro P.
year 1984
title TM : An Object- Oriented Language for CAD and Required Database Capabilities
source Silver Spring: IEEE Computer Society, 1984. pp. 115-123 : ill. includes bibliography
summary The object-oriented language TM is presented and its main features are discussed, such as attribute inheritance, extensibility, encapsulation, definition of public and private responses, and addition of responses. These features make TM attractive for expansion into a programming environment providing extensive DBMS capabilities. Since TM is conceived as a programming language for CAD, the extensions that are proposed are intended to convert TM into a programming environment and DBMS for CAD applications, providing the ability to handle molecular objects, heterogeneously formatted data and constraint management. The language has been implemented while the expansions are the subject of current research
keywords programming, languages, OOPS, CAD, applications,
series CADline
last changed 2003/06/02 11:58

_id 2667
authors Gonzalez, C.J., Williams, M.H. and Atichison, I.E.
year 1984
title Evaluation of the Effectiveness of PROLOG for a CAD Application
source IEEE Computer Graphics and Applications March, 1984. vol. 4: pp. 67-75 : ill. includes bibliography.
summary A comparison between PROLOG and PASCAL by implementing them on a PDP-11/34 in order to study whether PROLOG could be used as a language for programming CAD applications and if so how could it be used. To obtain a fair perspective Pascal was chosen as a model for programming languages because it is well structured, embodying all the control structures required for structured programming and providing a wide range of data structure like PROLOG
keywords PROLOG, PASCAL, CAD, applications, programming, languages
series CADline
last changed 2003/06/02 12:41

_id 4551
authors Griffiths, J.G.
year 1984
title A Depth-Coherence Scanline Algorithm for Displaying Curved Surfaces
source Computer Aided Design. March, 1984. vol. 16: pp. 91-101 : ill. includes bibliography
summary A scanline algorithm is presented which generates a realistic picture of a solid object bounded by curved surfaces. Externally, a surface is described by parametric equations. The internal representation is comprised of meshes of cubic splines which may be subdivided. Memory is saved by delaying subdivision, and by using a novel garbage collection technique. Time is saved by exploiting depth coherence. A viewpoint and scanline fix a cross-section represented as a set of curves. There are usually only a few of these to compare, and the curve nearest the viewer often remains nearest over much of its length
keywords algorithms, curves, curved surfaces, splines, computer graphics, hidden surfaces
series CADline
last changed 2003/06/02 11:58

_id c1ae
authors Gulliehsen, Eric and Chang, Ernest
year 1984
title An Expert System for Generative Architectural Design
source December, 1984. pp. 253-267. includes bibliography
summary The mathematician-architect Christopher Alexander has devised a scientific theory of architectural design. He believes that all existing architectural entities can be described as interacting patterns, all possible relationships of which are governed by generative rules. These form a pattern language capable of generating design forms appropriate to a given environmental context. The complexity of interaction among these rules leads to difficulties in their representation by conventional methods. This paper presents a computer-based expert system which implements Alexander's design methodology
keywords synthesis, expert systems, CAD, patterns, design, methods, architecture, theory
series CADline
last changed 2003/06/02 08:24

_id 2391
authors Hammond, Brian G. and Leifer, Dave
year 1984
title A Graphics Interface to Complement Traditional Techniques
source 1984? pp. 321-329 : ill. includes bibliography
summary Noting the reluctance of architects in small private practices to adopt CAAD aids, the crudity of existing graphic interfaces is identified as an inhibiting factor. A suite of computer programs currently under development are described which are designed to permit the input of geometric plan forms by traditional pencil and paper techniques, whilst utilizing the computers processing power to edit and manipulate the data so `captured'
keywords CAD, architecture, user interface, computer graphics
series CADline
last changed 2003/06/02 11:58

_id avocaad_2001_15
id avocaad_2001_15
authors Henri Achten, Jos van Leeuwen
year 2001
title Scheming and Plotting your Way into Architectural Complexity
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 The problem of complexity underlies all design problems. With the advent of CAD however, our ability to truly represent complexity has increased considerably. Following the four waves of design methodology as distinguished by Cross (1984), we see changing architectural design attitudes with respect to complexity. Rather than viewing it as problematic issue, designers such as Koolhaas, van Berkel, Lynn, and Franke embrace complexity and make it a focus in their design work. The computer is an indispensable instrument in this approach. The paper discusses the current state of the art in architectural design positions on complexity and CAAD, and reflects in particular on the role of design representations in this discussion. It is advanced that a number of recent developments are based on an intensified use of design representations such as schema’s, diagrams, and interactive modelling techniques. Within the field of possibilities in this field, the authors discuss Feature-Based Modelling (FBM) as a formalism to represent knowledge of the design. It is demonstrated how the FBM approach can be used to describe graphic representations as used in design, and how other levels and kinds of design knowledge can be incorporated, in particular the less definite qualitative information in the early design phase. The discussion section concludes with an extrapolation of the current role of design representation in the design process, and advances a few positions on the advantage and disadvantage of this role in architectural design.
series AVOCAAD
last changed 2005/09/09 08:48

_id 8919
authors Horowitz, Ellis
year 1984
title Fundamentals of Programming Languages---2nd. ed
source xv, 446 p. : ill. Rockville, Maryland: Computer Science Press, Inc., 1984. includes bibliography: p. 421-433 and index. -- (computer software engineering series)
summary Includes such topics as variables, expressions, statements, typing scope, procedures, data types, exception handling and concurrency. By understanding these concepts and how they are realized in different programming language, the reader is provided with a framework for understanding future language design and a level of comprehension far greater then one gets by writing different programs in different languages
keywords programming, languages, education
series CADline
last changed 1999/02/12 14:08

_id e0a3
authors Johnson, Robert E.
year 1984
title Computer-Aided Energy Economics for Early Concept Design Analysis
source Building Economics, International Symposium Proceedings (3rd : Canada). 1984? vol. 3: pp.46-57 : ill. includes bibliography
summary Decisions that have the greatest impact on energy cost performance are made very early in the design process. The problem is that these early design decisions are rarely tested thoroughly until very late in design. Usually this is due to the difficulties inherent in the use of the more sophisticated analysis procedures. Hourly energy computer simulations are costly to use, often require detailed input preparation, and use large ''main-frame' computers. Easier to use energy evaluation tools such as manual calculations and simplified computer programs do not yield reliable results. This is particularly true when passive solar design solutions are being tested. However, even the sophisticated approaches often have a limited ability to comprehensively model the economic implications of the more accurate energy simulations. This paper is intended to describe efforts at the University of Michigan to develop a more integrated approach to the assessment of energy economics - one that may be used at the earliest stages of concept design. The approach taken has been to concentrate on developing interactive, easy to use computer programs to describe building design proposals. This computer-generated building model is then used to automatically generate the information required to run a large, sophisticated energy analysis program developed by the U.S. Army Corps of Engineers (BLAST). Total life cycle cost analysis is performed either using procedures within BLAST or an 'electronic spreadsheet' system. Perceived deficiencies in the current state of this energy/cost evaluation system are described, and future research directions are presented
keywords architecture, energy, analysis, CAD, economics, design, methods
series CADline
last changed 2003/06/02 08:24

_id 40d6
authors Johnson, Robert E.
year 1984
title The Integration of Economic Analysis and Computer-based Building Models
source CIB W-65 Symposium. July, 1984. [19] p. : ill. includes bibliography
summary Most current methods used to evaluate the economics of building designs are inadequate in that they focus on the evaluation of completed designs and do not assist in the development and creation of designs. They are used after most major design decisions have been made. This paper describes the first year of a two year research project (funded by the National Science Foundation, the U.S. Government) which seeks to integrate economic analysis techniques into design decision-making within the context of an interactive computer-aided architectural and engineering design system. Issues reviewed include the current state of computer software, existing economic analysis models and existing economic analysis software. A conclusion is reached that most economic analysis systems fall into the category of single purpose software and are not adaptable to the wide range of idiosyncratic evaluation models used in real estate, architecture, engineering, construction and building management. Objectives are proposed for a general purpose, interactive cost modeling system that is integrated with a geometric computer-based building model. Initial experiments with a prototype of this system at various stages of the design-construction-use process are discussed. Further development of this system as a research tool for exploring alternative economic modeling procedures is presented
keywords analysis, evaluation, CAD, architecture, design, methods, economics, integration
series CADline
last changed 2003/06/02 11:58

_id 4eaf
authors Kalay, Yehuda E.
year 1984
title A Database Management Approach to CAD/CAM Systems Integration
source December, 1984. 13 p. : ill. includes bibliography
summary Facilitating the communication between different CAD/CAM systems is rapidly becoming an important issue, as more systems reach the market. A solution to the communication problem can be found if it is considered part of the more general problem of managing the complex information associated with the representation of physical artifacts and environments in the memory of computers, thereby accounting for the operators that are used for accessing the data as well as the data itself. Database management systems have provided powerful solutions to information management problems in a variety of disciplines and enjoy a broad and rigorous research foundation. If the techniques, methods and systems that were developed for database management could be utilized for CAD/CAM integration, they would save a considerable duplication of effort, enhance the integrity of the data, and bring to bear the results and advances that have been achieved over a long period of hard work
keywords CAD, CAM, relational database, integration, architecture
series CADline
last changed 2003/06/02 08:24

_id ebcc
authors Kolb, David A.
year 1984
title Experiential Learning
source Prentice Hall
summary In his book Experiential Learning: Experience as the Source of Learning and Development (1984), David Kolb introduces his experiential learning theory and provides a model for its application in schools, organizations, and virtually anywhere people are gathered together. Kolb's comprehensive and practical theory builds on the rich foundations of experience-based learning provided by John Dewey, Kurt Lewin, and Jean Piaget. We first consider the roots of his theory following which we offer a summary of it in practice.
series other
last changed 2003/04/23 13:14

_id eacf
authors Lantz, Keith A. and Nowicki, William I.
year 1984
title Structured Graphics for Distributed Systems
source ACM Transactions on Graphics January, 1984. vol. 3: pp. 23-51 : ill.
summary includes bibliography: pp. 48-51. One of the most important functions of an intelligent workstation is to provide a state-of-the-art user interface to distributed resources. One aspect of such an interface is virtual terminal support for both local and remote applications with a range of requirements, including graphics. To ensure good response for remote applications in particular, the bulk of user interaction must be handled local to the workstation. Therefore, the terminal management software on the workstation must provide object modeling as well as viewing facilities, in contrast to most contemporary graphics systems. One way of doing this is to support structured display files. It is equally important to support simultaneous access to multiple applications ; thus the terminal management software must provide window system facilities. Lastly, since the terminal management software should present a common interface to both local and remote applications, the workstation itself should be regarded as a multifunction component of the distributed system and not strictly as a terminal or a personal computer. This paper presents the system architecture and protocols necessary to achieve these goals and evaluates an existing implementation
keywords user interface, windowing, computer graphics, programming
series CADline
last changed 2003/06/02 08:24

_id 4af9
authors Levy, Henry
year 1984
title VAXstation : A General-Purpose Raster Graphics Architecture
source ACM Transactions on Graphics. January, 1984. vol. 3: pp. 70-83 : ill. includes bibliography
summary A raster graphics architecture and a raster graphics device are described. The graphics architecture is an extension of the RasterOp model and supports operations for rectangle movement, text writing, curve drawing, flood, and fill. The architecture is intended for implementation by both closely and loosely coupled display subsystems. The first implementation of the architecture is a remote raster display connected by fiber optics to a VAX minicomputer. The device contains a separate microprocessor, frame buffer, and additional local memory: it is capable of executing raster commands on operands in local memory or VAX host memory
keywords hardware, computer graphics, technology
series CADline
last changed 1999/02/12 14:09

_id 8c95
authors Liu, Clive K.
year 1984
title Drawings as Models for Design: A Computer Drawing System to Build Models Supporting Design Process through Abstractions
source Carnegie Mellon University, Pittsburgh
summary A general design process can be characterized by the sequence of defining various abstract objects used to represent the artifact. For example, designers use various abstractions (dclined as abstrnct objects), such as graphs, polygons, etc., to represent the artifact. As design evolves, these abstract objects will be transformed into a definition (eg. of a building) detailed enough to allow manufacturing and to determine that the result will perform as desired. This thesis is concerned with providing a computer drawing system that could support various abstractions in the design process and allow various representations of the design to be processed and interpreted. A precise drawing contains not only the shape information, but also conveys many topological and geometric relations that its elements must hold to correspond to the arbfact in reality. For many operations during design, one wants these type of relations to be maintained. Other than the drawing being an iconic model, these relations are the semantics of the drawing and, if embedded in the drawing, imbue it with many characteristics of a symbolic model. Current CAD systems have no or limited mechanisms for embedding such relations in a drawing. It is my intent to demonstrate that drawings, especially for shape (both topologV and geometry) information, can be defined as various abstract objects during design process. Therefore, drawings are used as models to represent the artifact. When a model is manipulated, relations defined in the model are maintained.
series thesis:PhD
last changed 2003/02/12 21:37

_id 8dce
authors Manna, Zohare and Waldinger, Richard
year 1984
title The Logical Basis for Computer Programming : Deductive Reasoning
source 2 v. : ill Reading, Mass.: Addison-Wesley Pub. Co., 1984. vol.1: includes bibliography v.1 p.: [579]-581 and index. -- CADLINE has vol. 1 only. (Addison-Wesley Series in Computer Science)
summary An introduction to the basic notions of propositional and predicate logic and special theories including integers, strings, trees, lists, sets, and tuples (arrays). Algorithms are expressed not as explicit programs but as the definitions of functions and relations within these theories
keywords logic, programming, AI, reasoning
series CADline
last changed 2003/06/02 11:58

_id ca27
id ca27
authors Martens, Bob and Peter, Herbert
year 2004
source Springer Publishers, Vienna/NewYork (ISBN 3-211-40755-3)
summary ArchiCAD has been on the market since 1984 and has firmly established itself among the available CAD software packages. The number of ArchiCAD users continues to increase and has already exceeded 100.000 by far. Continuous product development has broadened the program’s possible spectrum of work applications. Therefore, this book provides comprehensive (background) information and descriptions of the many tools, functions and processes, that explain and document their many practical, research and educational uses.
keywords CAD-software package, Virtual Building
series book
type normal paper
last changed 2004/08/17 10:34

_id 4965
authors Passini, R.
year 1984
title Wayfinding in Architecture
source Van Nostrand Reinhold, New York
summary This book gives a wonderful introduction to wayfinding and its importance in architecture. The author describes the wayfinding experience of users, and the cognitive processes they use to find their destinations. There is also a thorough description of wayfinding features in architecture such as signage, maps, and architectural space.
series other
last changed 2003/04/23 13:14

_id 812d
authors Peng, Q. S.
year 1984
title An Algorithm for Finding the Intersection Lines Between Two B-Spline Surfaces
source Computer Aided Design July, 1984. vol. 16: pp. 191-196 : ill. includes bibliography.
summary A divide-and-conquer algorithm is presented for finding all the intersection lines between two B-spline surfaces. Each surface is organized as an n-branch tree. For each intersection line, an initial point is detected after a depth-first search along one tree, i.e. the host tree. Extrapolation methods are then used to trace the entire length of the line, thus the line appears naturally in a continuous form. Efficiency of the algorithm is achieved by employing of an adaptive division strategy and by the careful choice of the representation basis of the patches on both surfaces
keywords logic, algorithms, B-splines, techniques, divide-and- conquer, intersection, curves, curved surfaces, representation
series CADline
last changed 2003/06/02 08:24

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