Cumincad : CUMINCAD Papers : Search Results

CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id	8a38
authors	Rasdorf, William J. and Parks, Linda M.
year	1987
title	Natural Language Prototypes for Analyzing Design Standards
source	Southampton, U.K: Computational Mechanics Publications, 1987. pp. 147-160
summary	CADLINE has abstract only. This paper addresses the use of natural language processing for acquiring, processing, and representing knowledge from design standards. A standard is a set of provisions providing principles, models, rules, limits, and particulars that are established by some authority for some purpose. In their textual form as written documents, design standards cannot directly be used in computer-aided design (CAD) systems. This paper demonstrates how standards can be transformed, using natural language processing techniques, from their textual form to alternative representations that more readily lend themselves to use in computer-aided design systems, supporting a variety of design applications. The language being transformed is the Building Officials and Code Administrators Building Code, one set of requirements that govern the design of buildings. Prototype computer subsystems have been developed that transform natural language sentences to case-grammar format and finally to subject-relationship- object triplets. The three prototypes that achieve these transformations are described: a parser, a semantic analyzer, and a query system. During one processing cycle, the system identifies that data items in a provision and the relationships between the data items. It also interacts with the user to add new data items to its knowledge bases, to verify data items found, and to add to its vocabulary. Alternatively, it responds to natural-language questions about the contents of the standard by identifying the relevant provisions within the standards. Processing formal documents requires knowledge about vocabulary, word-order, time, semantics, reference, and discourse. Despite the relative clarity of formal writing as it occurs in standards, the difficulties of implied responsibility, multiple meanings, and implied data items remain. A long-term research program at North Carolina State University has been defined that builds on these prototypes to further investigate knowledge acquisition and representation for standards
keywords	design, standards, analysis, AI, natural languages
series	CADline
last changed	2003/06/02 13:58

_id	3985
authors	Barton, G.E., Berrywick, R.C. and Ristad, E.S.
year	1987
title	Computational Complexity and Natural Language
source	MIT Press, Cambridge MA
summary	Computational Complexity and Natural Language heralds an entirely new way of looking at grammatical systems. It applies the recently developed computer science tool of complexity theory to the study of natural language
series	other
last changed	2003/04/23 15:14

_id	ed0f
authors	Moshe, R. and Shaviv, E.
year	1988
title	Natural Language Interface for CAAD System
source	CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 137-148
summary	This work explores issues involved in the development of a natural interface for man-machine dialogue in architectural design processes. A hand-touch on an interactive surface is suggested as the best natural-language interface for architectural CAD systems. To allow the development of a rich range of hand-touch natural-language for communicating information and commands to the computer, it is proposed to develop a new type of a touch-panel, for which a set of specifications is presented. A conceptual design of an architectural workstation, having the described touch-panel, is presented. This workstation is characterized by the integration of the entire range of control and communication facilities required for any architectural task into a single interactive unit. The conceptual model for this workstation is the standard size drawing board, on which the architect is accustomed to spread documents, drawings, books and tools, shuffle them around and interchange them freely by using the natural-language interface developed in this work. The potential of the suggested hand-touch natural-language and the proposed workstation are demonstrated by a case-study.
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	60f6
authors	Shapiro, Stuart C. and Rapaport, William J.
year	1987
title	Knowledge Representation for Natural Language Processing
source	September, 1987. pp. 56-77. includes bibliography
summary	In this paper the authors extend, deepen, and clarify their theory of intentional knowledge representation for natural- language processing, as presented in previous papers and in light of objections raised by others. The essential claim is that tokens in a knowledge-representation system represent only intentions and not extensions. The authors pursue this investigation by building CASSIE, a computer model of a cognitive agent and, to the extent she works, a cognitive agent herself. CASSIE's mind is implemented in the SNePS propositional semantic-network processing system
keywords	This paper explicates the relations among nodes, mental tokens,
series	CADline
last changed	2003/06/02 13:58

_id	0748
authors	Coyne, R.D., Rosenman, M.A. and Radford, A.D. (et.al.)
year	1987
title	Innovation and Creativity in Knowledge-based CAD
source	Amsterdam: North-Holland, 1987. pp. 435-465
summary	The authors examine the creativity of knowledge-based design systems from a narrow information processing perspective. As a property of the design process innovation and creativity can be identified by observing both the quality of the product, and also the characteristics of the process itself. The key theme running through the discussion is the acquisition of knowledge as the key to understanding creativity. This involves not only the ability of a system to acquire knowledge, but also its ability to control its own processes and change its own structure. In order to discuss this view a model of design systems is put forward in which a distinction between interpretative and syntactic subsystems for innovation and creativity is made
keywords	design process, knowledge base, systems, creativity, knowledge acquisition, representation
series	CADline
email
last changed	2003/05/17 10:13

_id	eeea
authors	Boehm, Barry W.
year	1987
title	Improving Software Productivity
source	IEEE Computer. September, 1987. vol. 20: pp. 43-47 : ill. graphs, tables. includes bibliography
summary	This article discusses avenues of improving productivity for both custom and mass-produced software. Some of the topics covered are: The importance of improving software productivity, measuring software productivity, analyzing software productivity, improving and indicating trends in software productivity
keywords	software, productivity, engineering, programming
series	CADline
last changed	2003/06/02 13:58

_id	cd8d
authors	Herbert, Daniel M.
year	1987
title	Study Drawings in Architectural Design: Applications for CAD Systems
doi	https://doi.org/10.52842/conf.acadia.1987.157
source	Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 157-168
summary	To guide their future development, research and teaching in computer-aided design must look beyond the technical capabilities of computer systems to establish a theoretical foundation based on known processes in design. This paper suggests that such a theoretical foundation can be derived by analyzing architectural study drawings -- defined as the rough drawings that architects make in the exploratory stages of design -- to determine their epistemelogical properties. The analysis brings forward concepts from a number of disciplines related to the structure of human knowledge to identify five properties of study drawings. Based on these properties, the paper proposes strategies for application to the next generation of research and teaching in CAD systems.
series	ACADIA
last changed	2022/06/07 07:49

_id	b9d1
authors	Barlas, Adnan
year	1987
title	STAGED BUILDING IN HIGH RISE HOUSING
source	Proceedings of the 1st European Full-Scale Workshop Conference / ISBN 87-88373-20-7 / Copenhagen (Denmark) 15-16 January 1987, pp. 53-56
summary	Since 1950s Turkey is experiencing a high rate of urbanization as a result of the inflow of Iarge number of rural immigrants to the urban areas, in addition to the natural urban population growth. This high level of urbanization gave rise to various burdens and problems within the urban areas. One of these problems.and the most important,is seen in the housing sector. The increasing level of housing need of the urban society could not be met by, the available urban housing a stock. Thus, there emerged a different type of production at the fringes of the urban areas, which is called as "squatter"; being completely unauthorized. In addition to the rapid urbanization -he general deficiencies in the Turkish economy have also effected the urban case. The rents and the prices of the dwelling units in the authorized stock increased to such level that, a great portion of the urban households with low and lower middle incomes could not afford to buy or rent a dwelling unit from the authorized stock. The situation is still the same now.
keywords	Full-scale Modeling, Model Simulation, Real Environments
series	other
type	normal paper
more	http://info.tuwien.ac.at/efa
last changed	2004/05/04 15:07

_id	a1f8
authors	Bijl, Aart
year	1987
title	Making Drawings Talk : Pictures in Minds and Machines
source	Eurographics '87. August, 1987. 16 p. : ill. includes bibliography
summary	Interactions between human minds and machine systems is discussed, drawing on experience of CAD and focusing on modes of expression. Free forms of text and drawings pose deep questions when interpretations have to be 'meaningful' to different knowledge representations - especially in loosely defined application fields
keywords	What should we expect from technology? CAD, knowledge, representation, architecture, natural languages, semantic networks, user interface
series	CADline
last changed	1999/02/12 15:07

_id	8e02
authors	Brown, A.G.P. and Coenen, F.P.
year	2000
title	Spatial reasoning: improving computational efficiency
source	Automation in Construction 9 (4) (2000) pp. 361-367
summary	When spatial data is analysed the result is often very computer intensive: even by the standards of contemporary technologies, the machine power needed is great and the processing times significant. This is particularly so in 3-D and 4-D scenarios. What we describe here is a technique, which tackles this and associated problems. The technique is founded in the idea of quad-tesseral addressing; a technique, which was originally applied to the analysis of atomic structures. It is based on ideas concerning Hierarchical clustering developed in the 1960s and 1970s to improve data access time [G.M. Morton, A computer oriented geodetic database and a new technique on file sequencing, IBM Canada, 1996.], and on atomic isohedral (same shape) tiling strategies developed in the 1970s and 1980s concerned with group theory [B. Grunbaum, G.C. Shephard, Tilings and Patterns, Freeman, New York, 1987.]. The technique was first suggested as a suitable representation for GIS in the early 1980s when the two strands were brought together and a tesseral arithmetic applied [F.C. Holdroyd, The Geometry of Tiling Hierarchies, Ars Combanitoria 16B (1983) 211–244.; S.B.M. Bell, B.M. Diaz, F.C. Holroyd, M.J.J. Jackson, Spatially referenced methods of processing raster and vector data, Image and Vision Computing 1 (4) (1983) 211–220.; Diaz, S.B.M. Bell, Spatial Data Processing Using Tesseral Methods, Natural Environment Research Council, Swindon, 1986.]. Here, we describe how that technique can equally be applied to the analysis of environmental interaction with built forms. The way in which the technique deals with the problems described is first to linearise the three-dimensional (3-D) space being investigated. Then, the reasoning applied to that space is applied within the same environment as the definition of the problem data. We show, with an illustrative example, how the technique can be applied. The problem then remains of how to visualise the results of the analysis so undertaken. We show how this has been accomplished so that the 3-D space and the results are represented in a way which facilitates rapid interpretation of the analysis, which has been carried out.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	maver_108
id	maver_108
authors	Maver, T.W., Clarke, J.A., Stearn, D.d. and Kim, J.J.
year	1987
title	Lighting Simulation in Building Performance Appraisal
source	Proceedings of Electronic Imaging Conference, Boston
summary	This paper describes an advanced, multi-chromatic lighting simulation model capable of representing complex geometries and randomly distributed luminaires. The model, known by the acronym DIM (Dynamic Illumination Model), is now operational as a research prototype and a follow-on project has now commenced which aims to transform this prototype into a polished design tool. DIM accepts a description of a zone's geometry, surface finishes, contents and natural and artificial light sources. A multi-chromatic ray tracking scheme is then employed to obtain the spectral surface luminance distribution corresponding to each light source. Output from the model are the usual contours of planar illuminance and coloured perspective images.
series	other
email
last changed	2003/09/03 15:36

_id	404e
authors	Oksala , T.
year	1988
title	Logical Models for Rule-based CAAD
source	CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 107-116
summary	The aim of this paper is to present the basic results of a theoretic approach to represent architectural individual forms in CAD systems. From the point of view of design methodology and problem solving these descriptions might be conceived' as parts of possible environments satisfying the laws of some design theory in logical sense. This paper describes results in a series of logical studies towards rule and knowledge based systems for design automation. The effective use of programming languages and computers as design aids in architecture presupposes certain capabilities to articulate built environment logically. The use of graphic languages in the description of environmental items e.g. buildings might be theoretically mastered by formal production systems including linguistic, geometric, and spatio-material generation. The combination of the power of formal mechanisms and logical individual calculus offers suitable framework to generate arbitrary e.g. free spatial compositions as types or unique solutions. In this frame it is natural to represent in a coherent way very complex hierarchical parsing of buildings in explicit form as needed in computer implementations. In order to simulate real design work the individual configurations of possible built forms should be designed to satisfy known rules. In the preliminary stage partial solutions to design problems may be discussed in mathematical terms using frameworks like lattices, graphs, or group theoretical considerations of structural, functional, and visual organization of buildings. The capability to produce mathematically sophisticated geometric structures allows us to generalize the approach further. The theoretical design knowhow in architecture can be partly translated in to some logic and represented in a knowledge base. These rules are used as selection criteria for geometric design candidates in the sense of logical model theory and mathematical optimization. The economy of the system can be developed by using suitable conduct mechanisms familiar e.g. from logic programming. The semantics of logic offers a frame to consider computer assisted and formal generation in design. A number of semantic and pragmatic problems, however, remain to be solved. In any case conceptual analyses based on logic are applicable in order to rationally reconstruct architectural goals contributing to the quality of environmental design, which should be the main goal in the development of design systems in near future.
series	CAAD Futures
last changed	1999/04/03 17:58

_id	ef3d
authors	Wilhelms, Jane
year	1987
title	Using Dynamic Analysis for Realistic Animation of Articulated Bodies
source	IEEE Computer Graphics and Applications. June, 1987. Vol. 7: pp. 12-27 : ill. (some col.). includes bibliography
summary	A major problem in animation is creating motion that appears natural and realistic, particularly in such complex articulated bodies as humans and other animals. At present, truly lifelike motion is produced mainly by copying recorded images, a tedious and lengthy process that requires considerable external equipment. An alternative is the use of dynamic analysis to predict motion. Using dynamic motion control, bodies are treated as masses acting under the influence of external and internal forces and torques. Dynamic control is advantageous because motion is naturally restricted to physically realizable patterns, and many types of motion can be predicted automatically. Use of dynamics is computationally expensive and specifying controlling forces and torques can be difficult. However, there is evidence that dynamics offers hope for more realistic, natural, and automatic motion control. Because such motion simulates real world conditions, an animation system using dynamic analysis is also a useful tool in such related fields as robotics and biomechanics
keywords	CAD, animation, computer graphics, simulation
series	CADline
last changed	1999/02/12 15:10

_id	sigradi2013_234
id	sigradi2013_234
authors	Alencar, Viviane; Gabriela Celani
year	2013
title	The Art of Computer Graphics Programming: Translating Pioneer Programs
source	SIGraDi 2013 [Proceedings of the 17th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Chile - Valparaíso 20 - 22 November 2013, pp. 500 - 504
summary	Considering the importance of the use of programming languages for teaching computational design to architects, this paper proposes the translation of computer programs from a pioneer work in this field into a more contemporary programming language. The book The Art of Computer Graphics Programming: A Structured Introduction for Architects and Designers was published in 1987 by William J. Mitchell, Robin Ligget and Thomas Kvan, and remains an important reference for architects. The original Pascal codes in the book were translated into Processing, and made available through an Internet website, along with images and comments, in order to give late Prof. Mitchell’s work the consideration it deserves.
keywords	Processing; Pascal; Computer graphics
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	cf2011_p170
id	cf2011_p170
authors	Barros, Mário; Duarte José, Chaparro Bruno
year	2011
title	Thonet Chairs Design Grammar: a Step Towards the Mass Customization of Furniture
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 181-200.
summary	The paper presents the first phase of research currently under development that is focused on encoding Thonet design style into a generative design system using a shape grammar. The ultimate goal of the work is the design and production of customizable chairs using computer assisted tools, establishing a feasible practical model of the paradigm of mass customization (Davis, 1987). The current research step encompasses the following three steps: (1) codification of the rules describing Thonet design style into a shape grammar; (2) implementing the grammar into a computer tool as parametric design; and (3) rapid prototyping of customized chair designs within the style. Future phases will address the transformation of the Thonet’s grammar to create a new style and the production of real chair designs in this style using computer aided manufacturing. Beginning in the 1830’s, Austrian furniture designer Michael Thonet began experimenting with forming steam beech, in order to produce lighter furniture using fewer components, when compared with the standards of the time. Using the same construction principles and standardized elements, Thonet produced different chairs designs with a strong formal resemblance, creating his own design language. The kit assembly principle, the reduced number of elements, industrial efficiency, and the modular approach to furniture design as a system of interchangeable elements that may be used to assemble different objects enable him to become a pioneer of mass production (Noblet, 1993). The most paradigmatic example of the described vision of furniture design is the chair No. 14 produced in 1858, composed of six structural elements. Due to its simplicity, lightness, ability to be stored in flat and cubic packaging for individual of collective transportation, respectively, No. 14 became one of the most sold chairs worldwide, and it is still in production nowadays. Iconic examples of mass production are formally studied to provide insights to mass customization studies. The study of the shape grammar for the generation of Thonet chairs aimed to ensure rules that would make possible the reproduction of the selected corpus, as well as allow for the generation of new chairs within the developed grammar. Due to the wide variety of Thonet chairs, six chairs were randomly chosen to infer the grammar and then this was fine tuned by checking whether it could account for the generation of other designs not in the original corpus. Shape grammars (Stiny and Gips, 1972) have been used with sucesss both in the analysis as in the synthesis of designs at different scales, from product design to building and urban design. In particular, the use of shape grammars has been efficient in the characterization of objects’ styles and in the generation of new designs within the analyzed style, and it makes design rules amenable to computers implementation (Duarte, 2005). The literature includes one other example of a grammar for chair design by Knight (1980). In the second step of the current research phase, the outlined shape grammar was implemented into a computer program, to assist the designer in conceiving and producing customized chairs using a digital design process. This implementation was developed in Catia by converting the grammar into an equivalent parametric design model. In the third phase, physical models of existing and new chair designs were produced using rapid prototyping. The paper describes the grammar, its computer implementation as a parametric model, and the rapid prototyping of physical models. The generative potential of the proposed digital process is discussed in the context of enabling the mass customization of furniture. The role of the furniture designer in the new paradigm and ideas for further work also are discussed.
keywords	Thonet; furniture design; chair; digital design process; parametric design; shape grammar
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	21d1
authors	Blinn, James F.
year	1987
title	How Many Ways Can You Draw a Circle?
source	IEEE Computer Graphics and Applications. August, 1987. vol. 7: pp. 39-65
summary	This is a first in a series of columns on computer graphics. In this column the author discusses the different algorithms one can find for drawing circles. The algorithms collection can be categorized by the two types of output: line endpoints or pixel coordinates. This comes from the general dichotomy of curve representation - parametric vs. algebraic. The language used is a mishmash of several programming constructs
keywords	drafting, circles, algorithms, programming, techniques
series	CADline
last changed	2003/06/02 13:58

_id	8f51
authors	Cox, Brad J.
year	1987
title	The Objective-C Environment; Past, Present, and Future
source	COMPCON 88. December, 1987. 6 p. includes bibliography
summary	The Objective-C environment is a growing collection of tools and reusable components (Software-ICs) for large-scale production system-building. Its goal is to make it possible for its users to build software systems in the way that hardware engineers build theirs, by reusing Software-ICs supplied by a marketplace in generic components rather than by building everything from scratch. The environment is based on conventional technology (C and Unix-style operating systems), which it includes and extends. The extensions presently include a compiled and an interpreted implementation of Objective-C (an object-oriented programming language based on C) and several libraries of reusable components (ICpaks)
keywords	languages, OOPS, software, programming, business, Objective-C
series	CADline
last changed	2003/06/02 13:58

_id	e7a8
authors	Emde, H.
year	1988
title	Geometrical Fundamentals for Design and Visualization of Spatial Objects
source	CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 171-178
summary	Every architectural object is a 3-dimensional entity of the human environment, haptically tangible and optically visible. During the architectural process of planning every object should be designed as a body and should be visualized in pictures. Thus the parts of construction get an order in space and the steps of construction get an order in time. The ideal planning object is a simulated anticipation of the real building object, which is to be performed later on. The possibility to relate the planning object immediately to the building object relies on the fact that they both have the same "geometry" This means: both can be described in the same geometric manner. Creating and visualizing spatial objects is based on geometrical fundamentals. Theoretical knowledge and practical control of these fundamentals is essential for the faultless construction and the realistic presentation of architectural objects. Therefore they have to be taught and learned thoroughly in the course of an architectural education. Geometrical design includes the forming of object- models (geometry of body boundaries), the structuring of object-hierarchies (geometry of body combinations) and the colouring of objects. Geometrical visualization includes controlling the processes of motion, of the bodies (when moving objects) and of the center of observation (when moving subjects) as well as the representation of 3-dimensional objects in 2- dimensional pictures and sequences of pictures. All these activities of architects are instances of geometrical information processing. They can be performed with the aid of computers. As for the computer this requires suitable hardware and software, as for the architect it requires suitable knowledge and capabilities to be able to talk about and to recall the perceivable objects and processes of the design with logic abstracts (language of geometry). In contrast to logical, numerical and textual informations the geometric informations concerning spatial objects are of much higher complexity. Usually these complexes of information are absorbed, processed and transmitted by the architect in a perceptive manner. The computer support in the field of geometry assumes that the processing of perceptions of the human consciousness can be converted by the computer as a framework of logical relations. Computer aided construction and representation require both suited devices for haptical and optical communication and suitable programs in particular.
series	CAAD Futures
last changed	1999/04/03 17:58

_id	68cb
authors	Fenves, Stephen J. and Baker, Nelson C.
year	1987
title	Spatial and Functional Representation Language for Structural Design
source	21 p. : ill. Pittsburgh: Engineering Design Research Center, CMU, December, 1987. includes bibliography
summary	Knowledge-based systems for structural design developed to date have used simple geometric representations which have not provided adequate spatial reasoning. Shape grammars are suggested as a representation for a knowledge-based system capable of performing spatial and functional reasoning. The representation needs to serve all disciplines involved in the design process, where different semantics of each discipline are associated with the same spatial information about design objects. The representation is demonstrated in the building design environment, where possible structural systems can be generated dependent upon the building's spatial layout
keywords	representation, shape grammars, structures, design, problem solving, planning, civil engineering, architecture
series	CADline
last changed	2003/06/02 10:24

_id	a7c1
authors	Galle, Per
year	1987
title	A Basic Problem Definition Language for Automated Floor Plan Design
source	113 p. 1987. DIKU Research Report No. 87/4
summary	CADLINE has abstract only. Algorithms for automated floor plan design need a machine- readable description of properties of the desired floor plans. In this report BPDL ('Basic Problem Definition Language'), a rudimentary language for stating such descriptions, is developed. The development is based on a discussion of pragmatic aspects of possible features of the language. The resulting language is described by formal definitions of syntax and semantics, accompanied by informal explanations. Finally, experiments with a floor plan design algorithm that supports BPDL are reported and it is concluded that even a rudimentary language like BPDL can describe relatively non- trivial floor plan layouts, provided a set of geometrical primitives, attributes and relations that make up the language are carefully chosen. Further research along the lines of BPDL is suggested, and the importance of a systematic approach to development of future specification languages for architectural design is stressed
keywords	architecture, floor plans, design, attributes, relations, semantics, algorithms, synthesis, planning, languages
series	CADline
last changed	1999/02/12 15:08

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