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	ga0126
id	ga0126
authors	van Loocke, Philip
year	2001
title	Organic visualisation of high-dimensional objects: exploration of a world of forms based on the heart transform
source	International Conference on Generative Art
summary	The paper starts with a brief motivation for the present type of work. The ecological argument, the world view argument and the argument in terms of understanding intuition are summarized. Then, a particular approach to the generative construction of organic forms is developed. The forms are based on variations of the ‘heart transform’. These variations allowone to construct two- and three dimensional visualizations of high-dimensional objects. The resulting forms can be described as ‘organic’ and complex, but some basic features, such as the requirement that a construction should be broader at its basis than at its top, or that itshould be more fractal at its boundary than at its center, can be controlled. The representations of some sets of high-dimensional points are aesthetically more attractive than the representations of other sets. It is discussed how this leads to the possibility of an aesthetic - instead of an algorithmic- basis for decisions on class-membership, and how this may shed light on the difference between algorithms and intuition.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	4b30
authors	Ahmad Rafi, M.E. and Mohd Fazidin, J.
year	2001
title	ARMY WAR GAME SIMULATION (AWAS) system - Utilising architectural knowledge in virtual environments
doi	https://doi.org/10.52842/conf.caadria.2001.435
source	CAADRIA 2001 [Proceedings of the Sixth Conference on Computer Aided Architectural Design Research in Asia / ISBN 1-86487-096-6] Sydney 19-21 April 2001, pp. 435-438
summary	This research briefly examines the importance of collaborative design in developing a multi-user, multi-tiered, networked and real-time information base system. Aspects such as navigation, interaction, communication, movements (objects or virtual camera), control, level of details, spatial design and virtual spaces will be explained to show their importance in the development of virtual world. This paper will further explore the aspects of collaborative design in the context of Army War Game Simulation System (AWAS). A generic collaborative design-based framework will be demonstrated to simulate the overall operations of a war in command-control structure of the force.
series	CAADRIA
email
last changed	2022/06/07 07:54

_id	5cf4
id	5cf4
authors	Barrionuevo, Luis F.
year	2004
title	LOS "SPIROSPACES"
source	Proceedings of the Fourth International Conference of Mathematics & Design, Special Edition of the Journal of Mathematics & Design, Volume 4, No.1, pp. 179-187.
summary	This paper deals with “Spirospaces”. These are a conversion to the third dimension of the two dimensional geometric entities called “Spirolaterals”. Abelson, Harold, diSessa and Andera (1968) gave the first rules concerning Spirolaterals. To obtain a Spirolateral from a set of straight lines, the first of them must be one unit long and the following must be incremented one unit at each step, at the same time that they turn in a constant direction. Odds (1973) establish the variation of the rotation direction, either to the left or the right. However, he did not give a mathematical relation able to calculate open Spirolaterals. Krawczyk (2001) developed a computer program that generates Spirolaterals following the method suggested by Abelson. These are Spirolaterals obtained by enumeration without a predictive mathematical formula. Krawczyc went farther proposing Spirolaterals based in curved lines. He pointed out that there are a variety of spirolateral forms that have architectural potentiality. Following this, the architectural potentiality of Spirolaterals is the basis of this paper. To take advantage of that potentiality a computer program was implemented to generate spatial configurations based in Spirolaterals. When a third dimension is given to the Spirolaterals they become Spirospaces. These new entities need spatial and design parameters to be useful for architectural purposes. Barrionuevo and Borsetti (2001) gave results about that work establishing the concept of Spirospaces. The aim of this paper is to describe a work directed to improve rules and procedures concerning Spirospaces. It is expected that these procedures governed by the proposed rules can be employed as tools during the early steps in the architectural design process. In this work some aspects concerning Spirospaces are considered. First, Spirolaterals are presented as the predecessors of Spirospaces. Second, Spirospaces are defined, together with their structural parameters. Architectural modeling is studied at the light of two special elements of the Spirospaces: Interstitial spaces and Object spaces. Next, a computer program is presented as the appropriate tool to model configurations having architectural potentiality. Finally, the results obtained running the computer program are analyzed to determine their possible use as architectural forms. Several graphic illustrations are presented showing steps going from the exploration of spatial alternatives to the selection of a specific configuration to be developed. It is expected that the described computer program could be employed as a design aid tool. As the operation of the program generates a variety of spaces able to dwell architectural objects, it eases the search of configurations suitable to specific functions. The results obtained have the possibility of being exported to computer graphic applications able to add materials, lights and cameras.
keywords	Spirolaterals, Spirospaces, architectural spaces, interstitial spaces, objectual spaces
series	other
type	normal paper
email
last changed	2005/04/07 15:34

_id	22ec
authors	Bechthold, Martin
year	2001
title	Complex shapes in wood: Computer-aided design and manufacture of wood-sandwich roof shells
source	Harvard University
summary	Computer-Aided-Design, Engineering and Manufacturing (CAD/CAE/CAM) technology has changed the way consumer products, automobiles or airplanes are designed and made. The emerging applications for CAD/CAE/CAM technology in architecture, and the way this technology impacts how we design and construct the built environment, are yet unclear. This thesis investigates the relation between advanced digital design tools and the making of physical objects by focusing on an exemplary architectural element—wooden roof shells. The research objective is to expand the scope of architectural design through the application of CAD/CAE/CAM technology rather than to use this technology to streamline existing processes. The thesis develops a specific technical solution that allows the design and manufacture of new types of wooden roof shells. These are complexly shaped multifunctional construction elements that are manufactured off-site. Based on the close connection between digital design tools and the new Computer-Numerically-Controlled manufacturing process the author proposes a theoretical model of shared digital environments for collaborative design in architecture. The proposed manufacturing process treats wood as a modern composite material. Thin wood strips and foams combine into structural sandwich panels that can then be joined into a roof shell. The geometrically complex panels are generated by a combination of subtractive Computer-Numerically-Controlled machining processes and manual work. Infrastructure elements can be embedded into the sandwich build-up in order to enhance the functionality of the roof as a building envelope. Numerical tools are proposed that allow the determination of manufacturing-related parameters in the digital design environment. These inform the architectural and structural design in the early design phases. The digital collaborative design environment is based on a shared parametric solid model and an associated database. This collectively owned, feature-based design model is employed throughout the design and manufacturing process and constitutes the means of concurrent design coordination of all participants. The new manufacturing process for wood/foam sandwich shells is verified by designing and manufacturing prototypes. Design guidelines and a cost estimation are presented as the practical basis for architects and engineers to incorporate new types of roof shells into architectural projects.
keywords	Architecture; Agriculture; Wood Technology; Design and Decorative Arts
series	thesis:PhD
last changed	2003/02/12 22:37

_id	ga0123
id	ga0123
authors	Coates P., Appels, T. Simon, C. and Derix, C.
year	2001
title	Current work at CECA
source	International Conference on Generative Art
summary	The centre for environment computing and architecture continues to experiment with new ways to form, and this paper presents three recent projects from the MSc programme. The three projects all share underlying assumptions about the use of generative algorithms to constructform, using fractal decomposition, lindenmayer systems and the marching cubes algorithm respectively to construct three dimensional "architectural" objects. The data needed to drive the morphology however ranges from formal proportional systems and Genetic L systems programming through swarming systems to perceptive self organising neural nets. In all cases, the projects pose the question what is architectural form. While after Stanford Anderson (Anderson 66) we know it is simplistic to say that it is an automatic outcome of a proper definition of the brief, it is also difficult to accept that the form of a building is an entirely abstract geometrical object existing without recourse to social or contextual justification. In anattempt to resolve these issues we have turned to the study of systems and general system theory as a way of understanding the mechanics of emergence and morphogenesis generally, and the
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	ec4d
authors	Croser, J.
year	2001
title	GDL Object
source	The Architect’s Journal, 14 June 2001, pp. 49-50
summary	It is all too common for technology companies to seek a new route to solving the same problem but for the most part the solutions address the effect and not the cause. The good old-fashioned pencil is the perfect example where inventors have sought to design-out the effect of the inherent brittleness of lead. Traditionally different methods of sharpening were suggested and more recently the propelling pencil has reigned king, the lead being supported by the dispensing sleeve thus reducing the likelihood of breakage. Developers convinced by the Single Building Model approach to design development have each embarked on a difficult journey to create an easy to use feature packed application. Unfortunately it seems that the two are not mutually compatible if we are to believe what we see emanating from Technology giants Autodesk in the guise of Architectural Desktop 3. The effect of their development is a feature rich environment but the cost and in this case the cause is a tool which is far from easy to use. However, this is only a small part of a much bigger problem, Interoperability. You see when one designer develops a model with one tool the information is typically locked in that environment. Of course the geometry can be distributed and shared amongst the team for use with their tools but the properties, or as often misquoted, the intelligence is lost along the way. The effect is the technological version of rubble; the cause is the low quality of data-translation available to us. Fortunately there is one company, which is making rapid advancements on the whole issue of collaboration, and data sharing. An old timer (Graphisoft - famous for ArchiCAD) has just donned a smart new suit, set up a new company called GDL Technology and stepped into the ring to do battle, with a difference. The difference is that GDL Technology does not rely on conquering the competition, quite the opposite in fact their success relies upon the continued success of all the major CAD platforms including AutoCAD, MicroStation and ArchiCAD (of course). GDL Technology have created a standard data format for manufacturers called GDL Objects. Product manufacturers such as Velux are now able to develop product libraries using GDL Objects, which can then be placed in a CAD model, or drawing using almost any CAD tool. The product libraries can be stored on the web or on CD giving easy download access to any building industry professional. These objects are created using scripts which makes them tiny for downloading from the web. Each object contains 3 important types of information: · Parametric scale dependant 2d plan symbols · Full 3d geometric data · Manufacturers information such as material, colour and price Whilst manufacturers are racing to GDL Technologies door to sign up, developers and clients are quick to see the benefit too. Porsche are using GDL Objects to manage their brand identity as they build over 300 new showrooms worldwide. Having defined the building style and interior Porsche, in conjunction with the product suppliers, have produced a CD-ROM with all of the selected building components such as cladding, doors, furniture, and finishes. Designing and detailing the various schemes will therefore be as straightforward as using Lego. To ease the process of accessing, sizing and placing the product libraries GDL Technology have developed a product called GDL Object Explorer, a free-standing application which can be placed on the CD with the product libraries. Furthermore, whilst the Object Explorer gives access to the GDL Objects it also enables the user to save the object in one of many file formats including DWG, DGN, DXF, 3DS and even the IAI's IFC. However, if you are an AutoCAD user there is another tool, which has been designed especially for you, it is called the Object Adapter and it works inside of AutoCAD 14 and 2000. The Object Adapter will dynamically convert all GDL Objects to AutoCAD Blocks during placement, which means that they can be controlled with standard AutoCAD commands. Furthermore, each object can be linked to an online document from the manufacturer web site, which is ideal for more extensive product information. Other tools, which have been developed to make the most of the objects, are the Web Plug-in and SalesCAD. The Plug-in enables objects to be dynamically modified and displayed on web pages and Sales CAD is an easy to learn and use design tool for sales teams to explore, develop and cost designs on a Notebook PC whilst sitting in the architects office. All sales quotations are directly extracted from the model and presented in HTML format as a mixture of product images, product descriptions and tables identifying quantities and costs. With full lifecycle information stored in each GDL Object it is no surprise that GDL Technology see their objects as the future for building design. Indeed they are not alone, the IAI have already said that they are going to explore the possibility of associating GDL Objects with their own data sharing format the IFC. So down to the dirty stuff, money and how much it costs? Well, at the risk of sounding like a market trader in Petticoat Lane, "To you guv? Nuffin". That's right as a user of this technology it will cost you nothing! Not a penny, it is gratis, free. The product manufacturer pays for the license to host their libraries on the web or on CD and even then their costs are small costing from as little as 50p for each CD filled with objects. GDL Technology has come up trumps with their GDL Objects. They have developed a new way to solve old problems. If CAD were a pencil then GDL Objects would be ballistic lead, which would never break or loose its point. A much better alternative to the strategy used by many of their competitors who seek to avoid breaking the pencil by persuading the artist not to press down so hard. If you are still reading and you have not already dropped the magazine and run off to find out if your favorite product supplier has already signed up then I suggest you check out the following web sites www.gdlcentral.com and www.gdltechnology.com. If you do not see them there, pick up the phone and ask them why.
series	journal paper
email
last changed	2003/04/23 15:14

_id	ecaade2015_217
id	ecaade2015_217
authors	Davis, Felecia and Dumitrescu, Delia
year	2015
title	What and When Is the Textile? Extending the Reach of Computation through Textile Expression
doi	https://doi.org/10.52842/conf.ecaade.2015.2.417
source	Martens, B, Wurzer, G, Grasl T, Lorenz, WE and Schaffranek, R (eds.), Real Time - Proceedings of the 33rd eCAADe Conference - Volume 2, Vienna University of Technology, Vienna, Austria, 16-18 September 2015, pp. 417-426
summary	The authors of this article argue for 'making time appear' in computational materials and objects so that it can be used to help people become aware of their relation to their environments. [Hallnäs & Redström 2001] As more computational and responsive materials come into play when designing architectural spaces designers might consider opening up the dimension of time to 'make time appear' rather than disappear. [Hallnäs & Redström 2001] Computational materials are materials which transform expression and respond to inputs read by computer programs. Making time appear can have many uses particularly in applications where people can be helped by the awareness of unfolding of time, where the temporality is linked to transformative body experience rather than project efficiency or collapsing distance. If architects, designers, engineers and others could begin to consider and use time as a way to promote reflection then it would be possible to design materials which could expand human thinking through the material itself.
wos	WOS:000372316000048
series	eCAADe
email
more	https://mh-engage.ltcc.tuwien.ac.at/engage/ui/watch.html?id=44daf674-70d7-11e5-8041-1b36fa35af4a
last changed	2022/06/07 07:56

_id	ga0120
id	ga0120
authors	Devetakovic, M.
year	2001
title	Communicating Generic Process – Some Issues of Representation Related to Architectural Design
source	International Conference on Generative Art
summary	It is commonly the intent of an architect to represent the development of an idea from the early sketches to the final artefact, as well as to explain particular functions of its parts or complex construction processes. But the opening of the secret of generic process to the public - presenting a range of possibilities instead of one final solution and even involving external participants in the creation process - is brand new. The contemporary communication of architectural ideas presumes both – visual/formal representation and interaction. As a result of research in the field of communication in architecture, this paper is focused ongeneric process phenomena, in particular on issues of its representation. It is based on analysis of a wide range of examples that have appeared in recent years, either in electronic, printed or physical form. It offers a systematization of approaches to representation and discusses thepotential and limitations of each type – series of physical objects, sequences of graphics (single, linear, planar and spatial) and animation, as well as their combinations (sequences of animations). A particular emphasis is placed on increasing the functionality of sequence-basedrepresentation (interacting, navigating…) and its interdependence with animation as a special case. Finally, the author proposes a rethinking of the role of both the architect, who defines a system of possibilities rather than a single solution, and the information recipient, who becomes not merely a passive spectator, but a creative participant in the design process.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	6bfe
authors	Eggink, D., Gross, M.D. and Do, E.
year	2001
title	Smart Objects: Constraints and Behaviors in a 3D Design Environment
doi	https://doi.org/10.52842/conf.ecaade.2001.460
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 460-465
summary	We describe a constraint-based three-dimensional design environment called Smart Objects. In Smart Objects, design collaborators (designers, clients and consultants) would engage an architectural design in an interactive three-dimensional environment where they may alter objects in the model and compose formal solutions. Design intentions embedded into objects as constraints are expressed as behaviors when the user moves objects in ways that either violate or meet specified constraints.
keywords	Constraints, Collaboration, VRML, Java
series	eCAADe
email
last changed	2022/06/07 07:55

_id	ebd0
authors	Eggink, Dustin
year	2001
title	Smart Objects: Constraints and Behaviors in a Dimensional Design
source	University of Washington, Design Machine Group
summary	Each new design problem in architecture presents a new set of requirements .A designer must remain aware of these requirements and effectively communicate them to collaborators because the degree to which the requirements are met will determine the success of the solution. This thesis explores how design can be effectively presented in a medium that is both explorative of form and descriptive of the design problem’s requirements. To facilitate this, we present Smart Objects, a constraint-based three-dimensional(3D) computer program. In Smart Objects, design intentions of an architectural problem are embedded as constraints into the modeled objects that compose a formal solution. A model is presented through a 3DVirtual Reality Modeling Language (VRML) viewer and constrained by a software program we wrote in the Java language. Both the VRML viewer and the Java program are contained within a single web page. In Smart Objectsd. A designer meets or violates constraints, objects behave in a manner that reflects the requirements of the problem and intentions of the designer. SmartObjects communicates the design principles and guidelines that inform an architectural design to the collaborators involved in the project. It ensures that these principles and guidelines are maintained as the design progresses.
series	thesis:MSc
email
more	http://dmg.caup.washington.edu/xmlSiteEngine/browsers/stylin/publications.html
last changed	2004/06/02 19:12

_id	d960
authors	Ekholm, Anders
year	2001
title	Activity objects in CAD-programs for building design. A prototype program implementation
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 61-74
summary	In the early stages of the building design process, during the programming and the proposal stages, both user activities and the building are in focus for the designer. In spite of this, today’s CAD programs give no support for management of information about user activities in the building. This paper discusses the requirements on modelling user activities in the context of building design and presents a prototype software. The prototype is developed as an add-on to the architectural design software ArchiCAD.
keywords	CAD, User Activity Modelling, Building Design, Building Product Modelling, Building Brief Development, Space Function Program
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	ga0124
id	ga0124
authors	Feuerstein, Penny L.
year	2001
title	Art In The Digital Age: Using Computer As An Expressive Tool
source	International Conference on Generative Art
summary	I use digital technology to visualize the theory that we experience any one moment in a "constant state of collage". I literally "scan" the moment, scanning objects such as rocks or paper, energy, and ideas into the computer to convert them to a new common language of binary numbers. After scanning, I work with digital tools to create generation, replication, and integration. These three attributes of the computer are used throughout my work. In this way the computer is used as an expressive tool to visualize the subconscious layering and relayering that occurs as the mind processes "experience" -that moment when the physical, intellectual, emotional and spiritual come together as one. I call this my "assemblage of the mind" with all that surrounds it. To illustrate this concept, I use software such as High Rez QFX or Photoshop to manipulate images of photographs drawings and paintings. I am exploring what happens to the gestural quality of the line or brushtroke when it has been maniplatedwith these digital tools. The manipulation of photography, drawings, paintings and found objects expresses a new reality that reflects this digital age.Digital imaging intensifies this reality because youhave the potential for infinite replications of the same image within one artwork. By making many reproductions it substitutes a plurality of copies for a unique existance. Using the generative tools, this plurality is taken a step further because it actually mimics our existance. Looking at Kasimir Malevich's painting, "basic Suprematist Element" inspired me to paint a brushstroke and transcend a photo of a landscape into it. By using transparency tools to integrate objects and photos with paintings, I want toconvey that the objective consciousness of an object is just as important as the subjective inner state of consciousness in experiencing reality. The irony is that my theory directly opposes Malevich's theories on Suprematism, yet it was Malevich who inspired me.
series	other
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	bedb
authors	Flanagan, Robert
year	2001
title	Sensory Deprivation: Issues of Control - Encoding Design Diagrams, Memory Engrams
doi	https://doi.org/10.52842/conf.ecaade.2001.214
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 214-219
summary	A persistent visual obsession in contemporary, digitally processed architecture instigated this design investigation. Neil Leach in The Anaesthetics of Architecture, identifies ‘aesthetic intoxication’, accompanied by a narcotic numbing effect, as a consequence of the fetishization of visual imagery. The inverse principle - sensory deprivation - completes the effect. Sensory deprivation results from miscues in the digital design process and from the intentional denial of sensory stimuli. A theater of the five sense was the design medium used to investigate sensory accountability. The issues addressed were: 1. Contextual factors of aestheticization and deprivation, particularly digital factors. 2. The effectiveness of Design Diagrams, graphic symbolic schematics, to address sensory deprivation and the anaesthetic effect. 3. The effectiveness of multi-sensory Memory Diagrams (engrams) as inhabitable Design Diagrams to address these effects. While the original intention was to study sensory accountability in digital design, the potential of multi-sensory Memory Diagrams re-centered the emphasis of this investigation.
keywords	Sensory Deprivation, Memory Diagrams, Design Diagrams
series	eCAADe
email
last changed	2022/06/07 07:51

_id	6a37
authors	Fowler, Thomas and Muller, Brook
year	2002
title	Physical and Digital Media Strategies For Exploring ‘Imagined’ Realities of Space, Skin and Light
doi	https://doi.org/10.52842/conf.acadia.2002.013
source	Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 13-23
summary	This paper will discuss an unconventional methodology for using physical and digital media strategies ina tightly structured framework for the integration of Environmental Control Systems (ECS) principles intoa third year design studio. An interchangeable use of digital media and physical material enabledarchitectural explorations of rich tactile and luminous engagement.The principles that provide the foundation for integrative strategies between a design studio and buildingtechnology course spring from the Bauhaus tradition where a systematic approach to craftsmanship andvisual perception is emphasized. Focusing particularly on color, light, texture and materials, Josef Albersexplored the assemblage of found objects, transforming these materials into unexpected dynamiccompositions. Moholy-Nagy developed a technique called the photogram or camera-less photograph torecord the temporal movements of light. Wassily Kandinsky developed a method of analytical drawingthat breaks a still life composition into diagrammatic forces to express tension and geometry. Theseschematic diagrams provide a method for students to examine and analyze the implications of elementplacements in space (Bermudez, Neiman 1997). Gyorgy Kepes's Language of Vision provides a primerfor learning basic design principles. Kepes argued that the perception of a visual image needs aprocess of organization. According to Kepes, the experience of an image is "a creative act ofintegration". All of these principles provide the framework for the studio investigation.The quarter started with a series of intense short workshops that used an interchangeable use of digitaland physical media to focus on ECS topics such as day lighting, electric lighting, and skin vocabulary tolead students to consider these components as part of their form-making inspiration.In integrating ECS components with the design studio, an nine-step methodology was established toprovide students with a compelling and tangible framework for design:Examples of student work will be presented for the two times this course was offered (2001/02) to showhow exercises were linked to allow for a clear design progression.
series	ACADIA
email
last changed	2022/06/07 07:51

_id	avocaad_2001_06
id	avocaad_2001_06
authors	Giovanni De Paoli
year	2001
title	Architectural design and procedural models - A radical change of language to design in architecture
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 history of architecture and its teaching clearly reveal how representations of the image and drawing have changed over centuries. Today, computers are increasingly found at the desks of architecture professionals and students, but their usage remains restricted to technical functions and what is commonly known as CAD (computer-assisted design), in architecture is often simply the other CAD (computer-assisted drawing).This presentation deals with architectural design, particularly at its earliest stage. Our objective is to propose a model for describing the architectural concept that meets the needs of architects through software. Only then will they really be able to use computers as an aid to design by overcoming the obstacles that presently keep us from making full use of them.This has led me to propose an avenue of exploration that examines projection through an object’s properties, and a method of computer-assisted design that makes use of procedural models. These procedural models consist of geometric operators and operators that define the properties, characteristics and performance of a building — operators which I have termed “semantic”.This research fits into a paradigm that leads to representation of the building through functions that can be called with parameters and encapsuled in an algorithm, making it possible to create procedural models that assist with the design. This approach opens up a means of integrating the logos with the figurative representation where drawing is used instead of words to convey the architectural concept.The example of a procedural model shows how we can use a generic model to produce a volume model with all the characteristics belonging to the same family of objects. This type of model can serve not only to illustrate the result of a process, or to draw connections among buildings on the basis of their construction process, or to test the validity of a rule typical of a set of objects, but also to integrate, through a functional language, semantic operators which to date have been excluded from the initial design phase. This descriptive mechanism is extremely powerful in making it possible to establish relationships among the functions and properties of a building and the purpose of the architectural project.The scientific contribution of this research is to test the hypothesis that we can use computer tools to manipulate operators which enable the architect to reappropriate a complex design of the building, and open up new lines of investigation into integrating geometric and knowledge-based systems into a unified representation. The declarative approach for creating three-dimensional scenes fits into this perspective.It is now a matter of exploring the possibility of working on a “common morphology” shared by everyone involved in the design process by rewriting the functions or by converting the functions used for representation, or else through a functional dialect (language) that allows for dialectic relationships among all types of operators and the actions of the protagonists in the architectural design process.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	avocaad_2001_08
id	avocaad_2001_08
authors	Ivanka Iordanova, Temy Tidafi
year	2001
title	Design assistance by complexity-supporting precedents' modelling
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 processes imply complexity at every stage of the development of a project. On one hand, this complexity is rarely taken into consideration by the currently used CAD programs. On the other hand, recent theoretical researches indicate that a large proportion of architectural design processes are based on precedents as a source of inspiration or as a basis for reflection. A precedent is usually seen as a sketch, as a picture, as a drawing or as a visual memory of an architectural object or space. Recent research enlarges this concept into at least two directions: (1) precedents are looked for not only in the architectural space, and (2) it’s not only the visual aspect of a precedent that is important, but also its internal logic and structure, the know-how associated to it, and the actions needed for its creation. Usually, architectural design knowledge is implicitly presented by precedents. This design knowledge is applied to design-objects having various levels of generality, at different states of detailing and expected to be dynamically transformed during the following stages of design. Having in mind these characteristics of precedents called for during the architectural design process, we propose to join their visual representation with a description of their most important characteristics: structural organisation, way of production, functional organisation, spatial composition, etc. These can be either described or modelled by the original author, or interpreted by the precedent’s ‘user’. These design-knowledge models can be of use in several ways: (1) providing a library for search of precedents by semantic analogy, (2) offering ready-to-use capsules of design knowledge for new design situations, (3) enriching the ‘design world’ of the user-architect. We have implemented the proposed method of complexity-supporting precedents’ modelling by the means of the functional programming SGDL-Scheme language. The models (a programming function or a structure of programming functions) describe the actions necessary for the creation of an object (or its digital representation) and the structural organisation between the models in order to generate new, more complex ones. The concept of describing actions instead of shapes, provides a multi-level applicability of the models. Visual presentations (digital maquettes, images or animations) of newly generated objects can be stored in a visual-library of the assistant, thus creating a new ‘precedent’ that can be referred to in future by visual analogy. The design-knowledge that has generated the new object, is stored and linked to the image. Thus, the visual stimulus of a precedent can be joined with functional characteristics, production procedures and/or semantic meaning of the object. The paper will present the ‘engine’ of the proposed assistant, its organisation, as well as digital models of precedents that have served as a basis for the design of new architectural objects or structures. The assistant is conceived as an open, complexity supporting structure that can be further developed by the ‘user-architect’. We will discuss the advantages and limitations of the proposed assistant.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	avocaad_2001_22
id	avocaad_2001_22
authors	Jos van Leeuwen, Joran Jessurun
year	2001
title	XML for Flexibility an Extensibility of Design Information Models
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 VR-DIS research programme aims at the development of a Virtual Reality – Design Information System. This is a design and decision support system for collaborative design that provides a VR interface for the interaction with both the geometric representation of a design and the non-geometric information concerning the design throughout the design process. The major part of the research programme focuses on early stages of design. The programme is carried out by a large number of researchers from a variety of disciplines in the domain of construction and architecture, including architectural design, building physics, structural design, construction management, etc.Management of design information is at the core of this design and decision support system. Much effort in the development of the system has been and still is dedicated to the underlying theory for information management and its implementation in an Application Programming Interface (API) that the various modules of the system use. The theory is based on a so-called Feature-based modelling approach and is described in the PhD thesis by [first author, 1999] and in [first author et al., 2000a]. This information modelling approach provides three major capabilities: (1) it allows for extensibility of conceptual schemas, which is used to enable a designer to define new typologies to model with; (2) it supports sharing of conceptual schemas, called type-libraries; and (3) it provides a high level of flexibility that offers the designer the opportunity to easily reuse design information and to model information constructs that are not foreseen in any existing typologies. The latter aspect involves the capability to expand information entities in a model with relationships and properties that are not typologically defined but applicable to a particular design situation only; this helps the designer to represent the actual design concepts more accurately.The functional design of the information modelling system is based on a three-layered framework. In the bottom layer, the actual design data is stored in so-called Feature Instances. The middle layer defines the typologies of these instances in so-called Feature Types. The top layer is called the meta-layer because it provides the class definitions for both the Types layer and the Instances layer; both Feature Types and Feature Instances are objects of the classes defined in the top layer. This top layer ensures that types can be defined on the fly and that instances can be created from these types, as well as expanded with non-typological properties and relationships while still conforming to the information structures laid out in the meta-layer.The VR-DIS system consists of a growing number of modules for different kinds of functionality in relation with the design task. These modules access the design information through the API that implements the meta-layer of the framework. This API has previously been implemented using an Object-Oriented Database (OODB), but this implementation had a number of disadvantages. The dependency of the OODB, a commercial software library, was considered the most problematic. Not only are licenses of the OODB library rather expensive, also the fact that this library is not common technology that can easily be shared among a wide range of applications, including existing applications, reduces its suitability for a system with the aforementioned specifications. In addition, the OODB approach required a relatively large effort to implement the desired functionality. It lacked adequate support to generate unique identifications for worldwide information sources that were understandable for human interpretation. This strongly limited the capabilities of the system to share conceptual schemas.The approach that is currently being implemented for the core of the VR-DIS system is based on eXtensible Markup Language (XML). Rather than implementing the meta-layer of the framework into classes of Feature Types and Feature Instances, this level of meta-definitions is provided in a document type definition (DTD). The DTD is complemented with a set of rules that are implemented into a parser API, based on the Document Object Model (DOM). The advantages of the XML approach for the modelling framework are immediate. Type-libraries distributed through Internet are now supported through the mechanisms of namespaces and XLink. The implementation of the API is no longer dependent of a particular database system. This provides much more flexibility in the implementation of the various modules of the VR-DIS system. Being based on the (supposed to become) standard of XML the implementation is much more versatile in its future usage, specifically in a distributed, Internet-based environment.These immediate advantages of the XML approach opened the door to a wide range of applications that are and will be developed on top of the VR-DIS core. Examples of these are the VR-based 3D sketching module [VR-DIS ref., 2000]; the VR-based information-modelling tool that allows the management and manipulation of information models for design in a VR environment [VR-DIS ref., 2000]; and a design-knowledge capturing module that is now under development [first author et al., 2000a and 2000b]. The latter module aims to assist the designer in the recognition and utilisation of existing and new typologies in a design situation. The replacement of the OODB implementation of the API by the XML implementation enables these modules to use distributed Feature databases through Internet, without many changes to their own code, and without the loss of the flexibility and extensibility of conceptual schemas that are implemented as part of the API. Research in the near future will result in Internet-based applications that support designers in the utilisation of distributed libraries of product-information, design-knowledge, case-bases, etc.The paper roughly follows the outline of the abstract, starting with an introduction to the VR-DIS project, its objectives, and the developed theory of the Feature-modelling framework that forms the core of it. It briefly discusses the necessity of schema evolution, flexibility and extensibility of conceptual schemas, and how these capabilities have been addressed in the framework. The major part of the paper describes how the previously mentioned aspects of the framework are implemented in the XML-based approach, providing details on the so-called meta-layer, its definition in the DTD, and the parser rules that complement it. The impact of the XML approach on the functionality of the VR-DIS modules and the system as a whole is demonstrated by a discussion of these modules and scenarios of their usage for design tasks. The paper is concluded with an overview of future work on the sharing of Internet-based design information and design knowledge.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	17ba
authors	Koutamanis, Alexander
year	2001
title	Fuzzy Modeling of Floor Plan Layout
doi	https://doi.org/10.52842/conf.acadia.2001.314
source	Reinventing the Discourse - How Digital Tools Help Bridge and Transform Research, Education and Practice in Architecture [Proceedings of the Twenty First Annual Conference of the Association for Computer-Aided Design in Architecture / ISBN 1-880250-10-1] Buffalo (New York) 11-14 October 2001, pp. 314-321
summary	Fuzzy modeling provides methods and techniques for qualifying and quantifying imprecise and uncertain information. The main advantages of fuzzy design representation are fluency, abstraction and continuity, at a level similar to that of analogue techniques, as well as the possibility of local autonomy, i.e. segmentation of a representation into self-regulating and cooperating components. The paper investigates the applicability of fuzziness to digital architectural sketching of floor plan layouts. Based on an analysis of the paradigmatic dimension in analogue floor plan sketches three alternative forms are proposed: (1) Canonical objects with tolerances, (2) objects described by minimal and maximal values, and (3) point sets which decompose the form of an object into a number of discrete, autonomous particles that describe the object by their position and spatial or structural relationships.
keywords	Representation, Sketching, Floor Plan, Fuzziness
series	ACADIA
email
last changed	2022/06/07 07:51

_id	7c0e
authors	Koutamanis, Alexander and Den Hartog, Peter
year	2001
title	Simulation and representation. Learning from airflow analyses in buildings
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 657-666
summary	The simulation of environmental aspects is a current priority in design research and practice. The availability of relatively efficient and reliable simulation systems and the emphasis on environmental aspects throughout a building’s lifecycle combine to stimulate exploration of aspects such as lighting and air quality by computational means. Nevertheless, a frequent complaint is that the addition of such simulations makes design information processing timeconsuming and cumbersome, thereby increasing uncertainty and indecision. Therefore, it is imperative that simulation is integrated in the strategies and tools normally used by the digitally-minded architect. In this respect a central issue is the relations between the simulation and the design representation used as connecting tissue for the whole design environment. Input of design information in the simulation means identification of relevant objects, aspects, parts and properties of these objects, as well as relationships between objects. The explicit description of objects such as spaces, doors and windows in the design representation allows for ready extraction of relevant information, including automatic recognition of relationships such as adjacency between a window and a space. The addition of information specific to the airflow analysis was resolved by the extension of the representation to cover front-end service components such as inlets and outlets and general properties (annotations) such as activities accommodated in a space and the primary choice of cooling and heating subsystems. The design representation is also the obvious target for the output of the simulation (feedback). Visualization of airflow in terms of the resulting voxels makes effortless and enjoyable viewing but merely allowing the visualization to coexist with the representation of spaces and building elements does not provide design guidance. One way of achieving that is by treating spaces not as integral entities but as containers of relevant surfaces. These surfaces determine the adaptive subdivision of the space and function as attractors for voxel clustering.
keywords	Simulation, Representation, Visualization
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	diss_long
id	diss_long
authors	Long, A.
year	2001
title	Quill A Gesture Design Tool for Pen-based User Interfaces
source	U.C. Berkeley
summary	This dissertation describes the motivation, design, and development of a tool for designing gestures for pen-based user interfaces. Pens and other styli have been ubiquitous for recording information for centuries. Recently, pen-based computers have recently become common, especially small devices such as the Palm Pilot. One benefit pens provide in computer interfaces is the ability to draw gestures—marks that invoke commands. Gestures can be intuitive and faster than other methods of invoking commands. However, our research shows that gestures are sometimes misrecognized and hard to remember. We believe these problems are due in part to the difficulty of designing “good” gestures—that is, gestures that are easy to remember and are recognized well—and the lack of tools for helping designers create good gestures. We believe that an improved gesture design tool can help interface designers create good gestures for their applications. Since people confuse similar objects and misremember them, we performed experiments to measure why people perceived gestures as similar. We derived computational metrics for predicting human perception of gesture similarity. Based on the results of our experiments, we developed a gesture design tool, quill. The tool warns designers about gestures that may be hard to remember or recognize, and provides advice about how to improve the gestures. It also provides a convenient way to test recognition of gestures. To evaluate quill, a user study was performed with 10 professional user interface designers and one professional web designer. All designers were able to create gesture sets using quill, but not all designers benefited from quill’s suggestions. More work is needed to make suggestions useful for most designers. The primary contributions of this work are: • Improved understanding of the gesture design process, including the types of problems people encounter when designing gestures. • Computational models for predicting human-perceived gesture similarity. • Confirmation of the importance of good naming for gesture memorability. • An intelligent gesture design tool, quill, which automatically warns designers about potential problems with their gestures and advises them about how to fix these problems. This work also suggests several areas for future work in the areas of gesture design tools and gesture similarity and memorability.
series	thesis:PhD
email
more	http://www-2.cs.cmu.edu/~chrisl/work/pubs/
last changed	2003/09/24 14:54

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