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CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
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_id	2068
authors	Frazer, John
year	1995
title	AN EVOLUTIONARY ARCHITECTURE
source	London: Architectural Association
summary	In "An Evolutionary Architecture", John Frazer presents an overview of his work for the past 30 years. Attempting to develop a theoretical basis for architecture using analogies with nature's processes of evolution and morphogenesis. Frazer's vision of the future of architecture is to construct organic buildings. Thermodynamically open systems which are more environmentally aware and sustainable physically, sociologically and economically. The range of topics which Frazer discusses is a good illustration of the breadth and depth of the evolutionary design problem. Environmental Modelling One of the first topics dealt with is the importance of environmental modelling within the design process. Frazer shows how environmental modelling is often misused or misinterpreted by architects with particular reference to solar modelling. From the discussion given it would seem that simplifications of the environmental models is the prime culprit resulting in misinterpretation and misuse. The simplifications are understandable given the amount of information needed for accurate modelling. By simplifying the model of the environmental conditions the architect is able to make informed judgments within reasonable amounts of time and effort. Unfortunately the simplications result in errors which compound and cause the resulting structures to fall short of their anticipated performance. Frazer obviously believes that the computer can be a great aid in the harnessing of environmental modelling data, providing that the same simplifying assumptions are not made and that better models and interfaces are possible. Physical Modelling Physical modelling has played an important role in Frazer's research. Leading to the construction of several novel machine readable interactive models, ranging from lego-like building blocks to beermat cellular automata and wall partitioning systems. Ultimately this line of research has led to the Universal Constructor and the Universal Interactor. The Universal Constructor The Universal Constructor features on the cover of the book. It consists of a base plug-board, called the "landscape", on top of which "smart" blocks, or cells, can be stacked vertically. The cells are individually identified and can communicate with neighbours above and below. Cells communicate with users through a bank of LEDs displaying the current state of the cell. The whole structure is machine readable and so can be interpreted by a computer. The computer can interpret the states of the cells as either colour or geometrical transformations allowing a wide range of possible interpretations. The user interacts with the computer display through direct manipulation of the cells. The computer can communicate and even direct the actions of the user through feedback with the cells to display various states. The direct manipulation of the cells encourages experimentation by the user and demonstrates basic concepts of the system. The Universal Interactor The Universal Interactor is a whole series of experimental projects investigating novel input and output devices. All of the devices speak a common binary language and so can communicate through a mediating central hub. The result is that input, from say a body-suit, can be used to drive the out of a sound system or vice versa. The Universal Interactor opens up many possibilities for expression when using a CAD system that may at first seem very strange.However, some of these feedback systems may prove superior in the hands of skilled technicians than more standard devices. Imagine how a musician might be able to devise structures by playing melodies which express the character. Of course the interpretation of input in this form poses a difficult problem which will take a great deal of research to achieve. The Universal Interactor has been used to provide environmental feedback to affect the development of evolving genetic codes. The feedback given by the Universal Interactor has been used to guide selection of individuals from a population. Adaptive Computing Frazer completes his introduction to the range of tools used in his research by giving a brief tour of adaptive computing techniques. Covering topics including cellular automata, genetic algorithms, classifier systems and artificial evolution. Cellular Automata As previously mentioned Frazer has done some work using cellular automata in both physical and simulated environments. Frazer discusses how surprisingly complex behaviour can result from the simple local rules executed by cellular automata. Cellular automata are also capable of computation, in fact able to perform any computation possible by a finite state machine. Note that this does not mean that cellular automata are capable of any general computation as this would require the construction of a Turing machine which is beyond the capabilities of a finite state machine. Genetic Algorithms Genetic algorithms were first presented by Holland and since have become a important tool for many researchers in various areas.Originally developed for problem-solving and optimization problems with clearly stated criteria and goals. Frazer fails to mention one of the most important differences between genetic algorithms and other adaptive problem-solving techniques, ie. neural networks. Genetic algorithms have the advantage that criteria can be clearly stated and controlled within the fitness function. The learning by example which neural networks rely upon does not afford this level of control over what is to be learned. Classifier Systems Holland went on to develop genetic algorithms into classifier systems. Classifier systems are more focussed upon the problem of learning appropriate responses to stimuli, than searching for solutions to problems. Classifier systems receive information from the environment and respond according to rules, or classifiers. Successful classifiers are rewarded, creating a reinforcement learning environment. Obviously, the mapping between classifier systems and the cybernetic view of organisms sensing, processing and responding to environmental stimuli is strong. It would seem that a central process similar to a classifier system would be appropriate at the core of an organic building. Learning appropriate responses to environmental conditions over time. Artificial Evolution Artificial evolution traces it's roots back to the Biomorph program which was described by Dawkins in his book "The Blind Watchmaker". Essentially, artificial evolution requires that a user supplements the standard fitness function in genetic algorithms to guide evolution. The user may provide selection pressures which are unquantifiable in a stated problem and thus provide a means for dealing ill-defined criteria. Frazer notes that solving problems with ill-defined criteria using artificial evolution seriously limits the scope of problems that can be tackled. The reliance upon user interaction in artificial evolution reduces the practical size of populations and the duration of evolutionary runs. Coding Schemes Frazer goes on to discuss the encoding of architectural designs and their subsequent evolution. Introducing two major systems, the Reptile system and the Universal State Space Modeller. Blueprint vs. Recipe Frazer points out the inadequacies of using standard "blueprint" design techniques in developing organic structures. Using a "recipe" to describe the process of constructing a building is presented as an alternative. Recipes for construction are discussed with reference to the analogous process description given by DNA to construct an organism. The Reptile System The Reptile System is an ingenious construction set capable of producing a wide range of structures using just two simple components. Frazer saw the advantages of this system for rule-based and evolutionary systems in the compactness of structure descriptions. Compactness was essential for the early computational work when computer memory and storage space was scarce. However, compact representations such as those described form very rugged fitness landscapes which are not well suited to evolutionary search techniques. Structures are created from an initial "seed" or minimal construction, for example a compact spherical structure. The seed is then manipulated using a series of processes or transformations, for example stretching, shearing or bending. The structure would grow according to the transformations applied to it. Obviously, the transformations could be a predetermined sequence of actions which would always yield the same final structure given the same initial seed. Alternatively, the series of transformations applied could be environmentally sensitive resulting in forms which were also sensitive to their location. The idea of taking a geometrical form as a seed and transforming it using a series of processes to create complex structures is similar in many ways to the early work of Latham creating large morphological charts. Latham went on to develop his ideas into the "Mutator" system which he used to create organic artworks. Generalising the Reptile System Frazer has proposed a generalised version of the Reptile System to tackle more realistic building problems. Generating the seed or minimal configuration from design requirements automatically. From this starting point (or set of starting points) solutions could be evolved using artificial evolution. Quantifiable and specific aspects of the design brief define the formal criteria which are used as a standard fitness function. Non-quantifiable criteria, including aesthetic judgments, are evaluated by the user. The proposed system would be able to learn successful strategies for satisfying both formal and user criteria. In doing so the system would become a personalised tool of the designer. A personal assistant which would be able to anticipate aesthetic judgements and other criteria by employing previously successful strategies. Ultimately, this is a similar concept to Negroponte's "Architecture Machine" which he proposed would be computer system so personalised so as to be almost unusable by other people. The Universal State Space Modeller The Universal State Space Modeller is the basis of Frazer's current work. It is a system which can be used to model any structure, hence the universal claim in it's title. The datastructure underlying the modeller is a state space of scaleless logical points, called motes. Motes are arranged in a close-packing sphere arrangement, which makes each one equidistant from it's twelve neighbours. Any point can be broken down into a self-similar tetrahedral structure of logical points. Giving the state space a fractal nature which allows modelling at many different levels at once. Each mote can be thought of as analogous to a cell in a biological organism. Every mote carries a copy of the architectural genetic code in the same way that each cell within a organism carries a copy of it's DNA. The genetic code of a mote is stored as a sequence of binary "morons" which are grouped together into spatial configurations which are interpreted as the state of the mote. The developmental process begins with a seed. The seed develops through cellular duplication according to the rules of the genetic code. In the beginning the seed develops mainly in response to the internal genetic code, but as the development progresses the environment plays a greater role. Cells communicate by passing messages to their immediate twelve neighbours. However, it can send messages directed at remote cells, without knowledge of it's spatial relationship. During the development cells take on specialised functions, including environmental sensors or producers of raw materials. The resulting system is process driven, without presupposing the existence of a construction set to use. The datastructure can be interpreted in many ways to derive various phenotypes. The resulting structure is a by-product of the cellular activity during development and in response to the environment. As such the resulting structures have much in common with living organisms which are also the emergent result or by-product of local cellular activity. Primordial Architectural Soups To conclude, Frazer presents some of the most recent work done, evolving fundamental structures using limited raw materials, an initial seed and massive feedback. Frazer proposes to go further and do away with the need for initial seed and start with a primordial soup of basic architectural concepts. The research is attempting to evolve the starting conditions and evolutionary processes without any preconditions. Is there enough time to evolve a complex system from the basic building blocks which Frazer proposes? The computational complexity of the task being embarked upon is not discussed. There is an implicit assumption that the "superb tactics" of natural selection are enough to cut through the complexity of the task. However, Kauffman has shown how self-organisation plays a major role in the early development of replicating systems which we may call alive. Natural selection requires a solid basis upon which it can act. Is the primordial soup which Frazer proposes of the correct constitution to support self-organisation? Kauffman suggests that one of the most important attributes of a primordial soup to be capable of self-organisation is the need for a complex network of catalysts and the controlling mechanisms to stop the reactions from going supracritical. Can such a network be provided of primitive architectural concepts? What does it mean to have a catalyst in this domain? Conclusion Frazer shows some interesting work both in the areas of evolutionary design and self-organising systems. It is obvious from his work that he sympathizes with the opinions put forward by Kauffman that the order found in living organisms comes from both external evolutionary pressure and internal self-organisation. His final remarks underly this by paraphrasing the words of Kauffman, that life is always to found on the edge of chaos. By the "edge of chaos" Kauffman is referring to the area within the ordered regime of a system close to the "phase transition" to chaotic behaviour. Unfortunately, Frazer does not demonstrate that the systems he has presented have the necessary qualities to derive useful order at the edge of chaos. He does not demonstrate, as Kauffman does repeatedly, that there exists a "phase transition" between ordered and chaotic regimes of his systems. He also does not make any studies of the relationship of useful forms generated by his work to phase transition regions of his systems should they exist. If we are to find an organic architecture, in more than name alone, it is surely to reside close to the phase transition of the construction system of which is it built. Only there, if we are to believe Kauffman, are we to find useful order together with environmentally sensitive and thermodynamically open systems which can approach the utility of living organisms.
series	other
type	normal paper
last changed	2004/05/22 14:12

_id	b04c
authors	Goerger, S., Darken, R., Boyd, M., Gagnon, T., Liles, S., Sullivan, J. and Lawson, J.
year	1996
title	Spatial Knowledge Acquisition from Maps and Virtual Environments in Complex Architectural Space
source	Proc. 16 th Applied Behavioral Sciences Symposium, 22-23 April, U.S. Airforce Academy, Colorado Springs, CO., 1996, 6-10
summary	It has often been suggested that due to its inherent spatial nature, a virtual environment (VE) might be a powerful tool for spatial knowledge acquisition of a real environment, as opposed to the use of maps or some other two-dimensional, symbolic medium. While interesting from a psychological point of view, a study of the use of a VE in lieu of a map seems nonsensical from a practical point of view. Why would the use of a VE preclude the use of a map? The more interesting investigation would be of the value added of the VE when used with a map. If the VE could be shown to substantially improve navigation performance, then there might be a case for its use as a training tool. If not, then we have to assume that maps continue to be the best spatial knowledge acquisition tool available. An experiment was conducted at the Naval Postgraduate School to determine if the use of an interactive, three-dimensional virtual environment would enhance spatial knowledge acquisition of a complex architectural space when used in conjunction with floor plan diagrams. There has been significant interest in this research area of late. Witmer, Bailey, and Knerr (1995) showed that a VE was useful in acquiring route knowledge of a complex building. Route knowledge is defined as the procedural knowledge required to successfully traverse paths between distant locations (Golledge, 1991). Configurational (or survey) knowledge is the highest level of spatial knowledge and represents a map-like internal encoding of the environment (Thorndyke, 1980). The Witmer study could not confirm if configurational knowledge was being acquired. Also, no comparison was made to a map-only condition, which we felt is the most obvious alternative. Comparisons were made only to a real world condition and a symbolic condition where the route is presented verbally.
series	other
last changed	2003/04/23 15:50

_id	6fc9
authors	Ponomareva, E., Litvinova A., and Kozakova, R.
year	1995
title	Multimedia and Special Architectural Disciplines
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 169-176
doi	https://doi.org/10.52842/conf.ecaade.1995.169
summary	A person is a wonderful creature. His high organization helps him not only to see and to hear the world around him, but to feel and understand, to condole and pity. A person is a sacramental creature too. His complex organization helps him to see day as light and darkness, as delivery and death, as delight and grief. Every human reaction has biological, physiological and sensitive components. That is why environment is able to call up physical an emotional associations. A human being can "see" sound and "hear" colours. All history of human culture shows that the art can affect man in different ways: unconscious effects, spontaneous associations, general symbolic or specific conventional meanings. That is why architecture can not only protect (a safeguarded aspect), but give knowledge ( an informational aspect) and set up mood (an emotional aspect). And that is why we speak about ambiguity of sense and about multiartistic works. Such as Skriabin's symphony 'Prometheus'. Two scores - musical and colouristic - are connected in this masterpiece. Let us look through two architectural disciplines—from this point of view. The programmes of these disciplines are examples of such embedment. Any architectural discipline demands computer graphics. Any architectural discipline demands multimedia aided teaching, because multimedia in computer designing is a result of human being's complexity and ambivalence.
series	eCAADe
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_22.htm
last changed	2022/06/07 08:00

_id	7670
authors	Sawicki, Bogumil
year	1995
title	Ray Tracing – New Chances, Possibilities and Limitations in AutoCAD
source	CAD Space [Proceedings of the III International Conference Computer in Architectural Design] Bialystock 27-29 April 1995, pp. 121-136
summary	Realistic image synthesis is nowadays widely used in engineering applications. Some of these applications, such as architectural, interior, lighting and industrial design demand accurate visualization of non-existent scenes as they would look to us, when built in reality. This can only be archived by using physically based models of light interaction with surfaces, and simulating propagation of light through an environment. Ray tracing is one of the most powerful techniques used in computer graphics, which can produce such very realistic images. Ray tracing algorithm follows the paths of light rays backwards from observer into the scene. It is very time consuming process and as such one could not be developed until proper computers appeared, In recent years the technological improvements in computer industry brought more powerful machines with bigger storage capacities and better graphic devices. Owing to increasing these hardware capabilities successful implementation of ray tracing in different CAD software became possible also on PC machines. Ray tracing in AutoCAD r.12 - the most popular CAD package in the world - is the best of that example. AccuRender and AutoVision are an AutoCAD Development System (ADS) applications that use ray tracing to create photorealistic images from 3D AutoCAD models. These ,internal"' applications let users generate synthetic images of threedimensional models and scenes entirely within AutoCAD space and show effects directly on main AutoCAD screen. Ray tracing algorithm accurately calculates and displays shadows, transparency, diffusion, reflection, and refraction from surface qualities of user-defined materials. The accurate modelling of light lets produce sophisticated effects and high-quality images, which these ray tracers always generates at 24-bit pixel depth,"providing 16,7 million colours. That results can be quite impressive for some architects and are almost acceptable for others but that coloured virtual world, which is presented by ray tracing in AutoCAD space in such convincing way, is still not exactly the same as the real world. Main limitations of realism are due to the nature of ray tracing method Classical ray tracing technique takes into account the effects of light reflection from neighbouring surfaces but, leaves out of account the ambient and global illumination arising out of complex interreflections in an environment. So models generated by ray tracing belong to an "ideal" world where real materials and environment can't find their right place. We complain about that fact and say that ray tracing shows us "too specular world", but (...) (...) there is anything better on the horizon? It should be concluded, that typical abilities of today's graphics software and hardware are far from exploited. As was observed in literature there have been various works carried along with the explicit intention of overcoming all these ray tracing limitations, These researches seem to be very promising and let us hope that their results will be seen in CAD applications soon. As it happens with modelling, perhaps the answer will come from a variety of techniques that can be combined together with ray tracing depending on the case we are dealing with. Therefore from the point of view of an architects that try to keep alive some interest on the nature of materials and their interaction with form, "ray tracing" seems to be right path of research and development that we can still a long way follow, From the point of view of the school, a critical assimilation of "ray tracing" processes is required and one that might help to determinate exactly their distortions and to indicate the correct way of its development and right place in CAAD education. I trust that ray tracing will become standard not only in AutoCAD but in all architectural space modelling CAD applications and will be established as a powerful and real tool for experimental researches in architectural design process. Will be the technological progress so significant in the nearest future as it is anticipated?
series	plCAD
last changed	2000/01/24 10:08

_id	07da
authors	Wohlers, T.
year	1995
title	3D Digitizers for Engineering
source	Computer Graphics World, (March 1995), p. 112-115
summary	3D digitizing systems permit you to create a digital model from a physical part. The process is appealing because it can be difficult to create models of complex objects using computer tools without the aid of a 3D input device. Recreating an existing part from scratch, even with a computer, is like copying a printed page by retyping it. Although 3D digitizers are not as straightforward as a photocopy machine, the intent is the same. You can render and print a digitized model to communicate shape information, extract dimensions from it to show size information, and use the 3D database to manufacture a replica using rapid prototyping (RP) and CNC machines. You can also include the 3D model in multimedia or animation software as a learning or assembly aid. The challenge of the digitization process in manufacturing is to capture adequate detail and resolution. Adding a digitized model to a Hollywood film is often much easier than reverse engineering a part for prototyping or manufacturing. The only criteria for a movie or TV commercial is whether or not it looks good. No one from the audience measures the object to see if it meets a given tolerance. In manufacturing, RP and CNC machines require clean, complete, and accurate information. If areas on the model are incomplete or missing, it may be difficult or impossible to build the part. If edges, grooves, and features of the part are not fine and crisp, the results may be less than satisfactory. Most 3D digitizing systems are best at digitizing organic shapes such as free-form sculpted surfaces. When you see an advertisement or a catalog from companies offering digitized models, often you see objects such as human anatomy, animals, bones, skeletons, and so on. You may also see cars, trucks, motorcycles and airplanes, although they can be more difficult to digitize. Highly engineered parts, such as enclosures for electronic devices are usually the most difficult for 3D digitizers. That's why these systems aren't used widely for the reverse engineering of precision mechanical parts.
series	journal paper
last changed	2003/04/23 15:50

_id	a927
authors	Amirante, Isabella and Bosco, Antonio
year	1995
title	Hypertext Between Research and Teaching: An Experience in a Didactic Building Technology Laboratory
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 3-12
doi	https://doi.org/10.52842/conf.ecaade.1995.003
summary	IPER (hypertext for the knowledge of building patrimony) is the result of a research developed with C.N.R. (National Research Institute). The aim of IPER is to provide the knowledge, the description and the management of one or more historical buildings for public or private institutions. IPER allowed us to improve our methodology of building analysis, covering various disciplinary fields, in two different systems. (1.) the first one, synthetic and suitable for a group of historical buildings, (2.) the second one, complex and particularly made for monumental buildings. // This experience is related to the new regulation of teaching architecture in Italy made in 1993. The main novelty is the introduction of the laboratories with the contemporary presence of two or three teachers of different disciplines, working together with the students on the same project with different approaches. This opportunity allowed us to introduce the "knowledge engineer" as a teacher in the laboratory of building technology. IPER is given to the students with the aim of experimenting and solving the theoretical and practical difficulties that students of different years may encounter in the knowledge and representation of buildings and in the organisation of all the data from the case study.
series	eCAADe
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_1.htm
last changed	2022/06/07 07:54

_id	5236
authors	Arciszewski, T., Michalski, R.S. and Dybala, T.
year	1995
title	STAR methodology-based learning about construction accidents and their prevention
source	Automation in Construction 4 (1) (1995) pp. 75-85
summary	This paper presents the results of a feasibility study concerning the application of STAR-methodology-basedmachine learning to construction accidents and their prevention. A ten-stage knowledge acquisition process is presented and its individual stages described. Knowledge about construction accidents was acquired using a collection of 225 examples, based on actual accidents records. Inductive learning with a system based on the STAR-methodology was employed. This system was used in both the generalization and specialization modes of operation. The decision rules obtained are complex, but their interpretation is clear and they seem to be consistent with the present understanding of causal relationships between accident results and various factors affecting them. Also, the rules were verified using average overall and omission empirical error rates, which were calculated as average for three randomly determined sequences of examples. These error rates were calculated for all seven steps in the machine learning process, and were used to construct learning curves for both error rates. The relationships between error rates and the number of examples used for learning are analyzed, and coefficients of linear regression given and discussed. The 225 examples used were found to be grossly insufficient to produce reliable knowledge about accidents and therefore a large study is postulated which would involve the collection of a larger number of construction accident records. In general, our study demonstrated the feasibility of machine learning in acquiring knowledge about construction accidents.
keywords	Construction accidents and their prevention; Knowledge acquisition; Machine learning; Multi-stepmachine learning process
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/06/02 09:31

_id	2a49
authors	Asanowicz, Aleksander
year	1995
title	Multimedia Versus Ugliness of the City
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 389-394
doi	https://doi.org/10.52842/conf.ecaade.1995.389
summary	This paper presents a method of using multimedia techniques in order to solve problems of visual pollution of city environment. It is our observation that human - inducted degradation of city environmental results not only from neglect and vandalism but also from well - intentioned but inappropriate preservation actions by uninformed designers and local administrations. Very often, a local municipality administration permit to erect an ugly, bad-fitting surroundings houses. It is usually connected with lack of informations about certain areas of a city, its features, characteristic and about present and earlier buildings. Therefore there was an experiment - a complex programme aiding the decision process as a part of the CAMUS system (Computer Aided Management of Urban Structure) which is created at Faculty of Architecture TUB. One of the integral parts of it is a block, which has been called "How would it be like to be nice around". One of the basic elements of that system is a town data base consisting of the independent knowledge - based systems, working together in a distributed computing environment. City administration will have access to each information from multimedia data-base. Multimedia is also having and impact on the effectiveness of decision process in urban planning and in our fight with ugliness of the city.
series	eCAADe
email
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_46.htm
last changed	2022/06/07 07:54

_id	065b
authors	Beitia, S.S., Zulueta, A. and Barrallo, J.
year	1995
title	The Virtual Cathedral - An Essay about CAAD, History and Structure
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 355-360
doi	https://doi.org/10.52842/conf.ecaade.1995.355
summary	The Old Cathedral of Santa Maria in Vitoria is the most representative building of the Gothic style in the Basque Country. Built during the XIV century, it has been closed to the cult in 1994 because of the high risk of collapse that presents its structure. This closure was originated by the structural analysis that was entrusted to the University of the Basque Country in 1992. The topographic works developed in the Cathedral to elaborate the planimetry of the temple revealed that many structural elements of great importance like arches, buttresses and flying buttresses were removed, modified or added along the history of Santa Maria. The first structural analysis made in the church suggested that the huge deformations showed in the resistant elements, specially the piers, were originated by interventions made in the past. A deep historical investigation allowed us to know how the Cathedral was built and the changes executed until our days. With this information, we started the elaboration of a virtual model of the Cathedral of Santa Maria. This model was introduced into a Finite Elements Method system to study the deformations suffered in the church during its construction in the XIV century, and the intervention made later in the XV, XVI and XX centuries. The efficiency of the virtual model simulating the geometry of the Cathedral along history allowed us to detect the cause of the structural damage, that was finally found in many unfortunate interventions along time.
series	eCAADe
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_43.htm
last changed	2022/06/07 07:54

_id	c2bd
authors	Belblidia, Salim and Perrin, Jean-Pierre
year	1995
title	Multi-Resolution Rendering of Architectural Models
source	Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 231-239
summary	This paper presents a method for representing complex models with various levels of detail. It is based on a geometric simplification algorithm and is applied to a scene described by a rooted-tree structure. In order to control the restuting image quality and the computation time, we propose two algorithms which allow to choose one representation of the scene.
keywords	Computer Graphics, Image Synthesis, Realistic Rendering, Real-Time Rendering, Computer Aided Architectural Design
series	CAAD Futures
email
last changed	2003/11/21 15:16

_id	e100
authors	Bermudez, Julio and King, Kevin
year	1995
title	Architecture in Digital Space: Actual and Potential Markets
source	Computing in Design - Enabling, Capturing and Sharing Ideas [ACADIA Conference Proceedings / ISBN 1-880250-04-7] University of Washington (Seattle, Washington / USA) October 19-22, 1995, pp. 405-423
doi	https://doi.org/10.52842/conf.acadia.1995.405
summary	As both the skepticism and 'hype' surrounding electronic environments vanish under the weight of ever increasing power, knowledge, and use of information technologies, the architectural profession must prepare for significant expansion of its professional services. To address the issue, this paper offers a survey of the professional services architects and designers do and may provide in digital space, and who the potential clients are. The survey was conducted by interviews with software developers, gaming companies, programmers, investigators, practicing architects, faculty, etc. It also included reviews of actual software products and literary research of conference proceedings, journals, books and newspapers (i.e. articles, classified ads, etc.). The actual and potential markets include gaming and entertainment developments, art installations, educational applications, and research. These markets provide architects the opportunity to participate in the design of 3D gaming environments, educational software, architecture for public experience and entertainment, data representation, cyberspace and virtual reality studies, and other digital services which will be required for this new world. We will demonstrate that although the rapidly growing digital market may be seen by some to be non-architectural and thus irrelevant to our profession, it actually represents great opportunities for growth and development. Digital environments will not replace the built environment as a major architectural market, but they will significantly complement it, thus strengthening the entire architectural profession.
series	ACADIA
email
last changed	2022/06/07 07:52

_id	8f0b
authors	Bhavnani, S., Flemming, U., Forsythe, D.E., Garrett, J.H., and Shaw, D.S.
year	1995
title	Understanding and Assisting CAD Users in the Real World
source	Computing in Design - Enabling, Capturing and Sharing Ideas [ACADIA Conference Proceedings / ISBN 1-880250-04-7] University of Washington (Seattle, Washington / USA) October 19-22, 1995, pp. 209-227
doi	https://doi.org/10.52842/conf.acadia.1995.209
summary	In spite of the rapid increase in functionality and resources provided by CAD systems, productivity growth expected from their use has been difficult to achieve. Although many surveys describe this "productivity puzzle", few studies have been conducted on actual CAD users to understand its causes. In an effort to understand this issue, the first author visited a federal architectural office and observed CAD users in their natural setting using ethnographic techniques developed by cultural anthropologists. This paper describes preliminary results obtained from the study. The study revealed that users had leveled-off in their learning and experimentation and were using the CAD system in sub-optimal ways. The authors argue that this sub-optimal usage occurs because users have limited ways to learn better or different ways of executing tasks. The authors propose that CAD systems should provide active assistance, that is, intervene spontaneously with advice, assistance, and relevant information while the user interacts with the system. They conclude with some issues revealed by the study that should be considered when developing such active assistance.
series	ACADIA
email
last changed	2022/06/07 07:52

_id	ae10
authors	Branzell, Arne
year	1995
title	Management of Sequential Space Experiences
source	The Future of Endoscopy [Proceedings of the 2nd European Architectural Endoscopy Association Conference / ISBN 3-85437-114-4]
summary	In this paper a way of combining endoscopy with architectural notations will be presented. Endoscopy is regarded as a tool to visualize sequences from a model in order to demonstrate how the environment will look like from the pedestrian’s or driver’s view. But while using it, its limitations must be considered. The model is mostly too small to present distant landmarks, districts, nodes and edges of importance. And most important, experience of space is not only visual. It is a complex process where many aspects must be taken into consideration. These aspects can be presented with architectural notations on physical drawings of the situation. The resulting “storyboard” is most useful in analyzing the situation and making better solutions possible.
keywords	Architectural Endoscopy, Real Environments
series	EAEA
more	http://info.tuwien.ac.at/eaea/
last changed	2005/09/09 10:43

_id	4202
authors	Brown, Michael E. and Gallimore, Jennie J.
year	1995
title	Visualization of Three-Dimensional Structure During Computer-Aided Design
source	International Journal of Human-Computer Interaction 1995 v.7 n.1 pp. 37-56
summary	The visual image presented to an engineer using a computer-aided design (CAD) system influences design activities such as decision making, problem solving, cognizance of complex relationships, and error correction. Because of the three-dimensional (3-D) nature of the object being created, an important attribute of the CAD visual interface concerns the various methods of presenting depth on the display's two-dimensional (2-D) surface. The objective of this research is to examine the effects of stereopsis on subjects' ability to (a) accurately transfer to, and retrieve from, long-term memory spatial information about 3-D objects; and (b) visualize spatial characteristics in a quick and direct manner. Subjects were instructed to memorize the shape of a 3-D object presented on a stereoscopic CRT during a study period. Following the study period, a series of static trial stimuli were shown. Each trial stimulus was rotated (relative to the original) about the vertical axis in one of six 36° increments between 0° and 180°. In each trial, the subject's task was to determine, as quickly and as accurately as possible, whether the trial object was the same shape as the memorized object or its mirrored image. One of the two cases was always true. To assess the relative merits associated with disparity and interposition, the two depth cues were manipulated in a within-subject manner during the study period and during the trials that followed. Subject response time and error rate were evaluated. Improved performance due to hidden surface is the most convincing experimental finding. Interposition is a powerful cue to object structure and should not be limited to late stages of design. The study also found a significant, albeit limited, effect of stereopsis. Under specific study object conditions, adding disparity to monocular trial objects significantly decreased response time. Response latency was also decreased by adding disparity information to stimuli in the study session.
series	journal paper
last changed	2003/05/15 21:45

_id	05f7
authors	Carrara, G., Confessore, G., Fioravanti, A. and Novembri, G.
year	1995
title	Multimedia and Knowledge-Based Computer-Aided Architectural Design
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 323-330
doi	https://doi.org/10.52842/conf.ecaade.1995.323
summary	It appears by now fairly accepted to many researchers in the field of the Computer Aided Architectural Design that the way to realize support tools for these aims is by means of the realization of Knowledge Based Assistants. This kind of computer programs, based on the knowledge engineering, finds their power and efficaciousness by their knowledge base. Nowadays this kind of tools is leaving the research world and it appears evident that the common graphic interfaces and the modalities of dialogue between the architect and the computer, are inadequate to support the exchange of information that the use of these tools requires. The use of the knowledge bases furthermore, presupposes that the conceptual model of the building realized by others, must be made entirely understandable to the architect. The CAAD Laboratory has carried out a system software prototype based on Knowledge Engineering in the field of hospital buildings. In order to overcome the limit of software systems based on usual Knowledge Engineering, by improving architect-computer interaction, at CAAD Lab it is refining building model introducing into the knowledge base two complementary each other methodologies: the conceptual clustering and multimedia technics. This research will make it possible for architects navigate consciously through the domain of the knowledge base already implemented.
series	eCAADe
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_39.htm
last changed	2022/06/07 07:55

_id	cf51
authors	Cheng, Nancy Yen-wen
year	1995
title	By All Means: Multiple Media In Design Education
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 117-128
doi	https://doi.org/10.52842/conf.ecaade.1995.117
summary	This paper describes how to combine media to maximize understanding in CAD education. Advantages such as synergistic communication, clarification of common concepts and awareness of media characteristics are illuminated through digital and traditional projects. Learning computer media through communication exercises is discussed with examples from networked collaborations using the World Wide Web. Language teaching shows how to use these exercises to encourage critical thinking in a CAD curriculum.
series	eCAADe
email
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_16.htm
last changed	2022/06/07 07:55

_id	00ce
authors	Cicognani, Anna
year	1995
title	The New Challenge of Learning
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 37-42
doi	https://doi.org/10.52842/conf.ecaade.1995.037
summary	The World Wide Web offers us a new way of hunting for information. If we compare Internet to an ocean, "surfing" is perhaps the right word to use for describing this hunting process. The 'power" of the Web lies in its friendly interface and in its potential to provide users with high impact documents, pictures, animation and sound. The hypertext nature of the Web allows us to create an on-going set of links which refer to and connect sites all over the world. Researchers and students can use this tool not only for gathering information, but also for publishing their works and "peering" with the works of others. The challenge, then, is to generate new interest around getting information. Students seem to have more motivations in learning whilst experimenting. And the Web is a good place to start.
series	eCAADe
email
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_5.htm
last changed	2022/06/07 07:56

_id	e420
authors	Colajanni, B., Pellitteri, G. and Giacchino, V.
year	1995
title	An Hypertext in Building Rehabilitation: A Case Study in Palermo
source	Multimedia and Architectural Disciplines [Proceedings of the 13th European Conference on Education in Computer Aided Architectural Design in Europe / ISBN 0-9523687-1-4] Palermo (Italy) 16-18 November 1995, pp. 29-36
doi	https://doi.org/10.52842/conf.ecaade.1995.029
summary	Hypertext is an ideal tool to teach building design inasmuch as it allows both teacher driven and student self driven learning. It allows to link every type of informations (texts, sounds, images, films) with associative mechanisms much like those utilized by our brain. Hypertextes buikt up for teaching purposen can be usefully employed in professional occurrencies. An example is shown dealing with the rehabilitation of the Fiumetorto Palace in the historical centre of Palermo. It manages in a simple but efficient way the many complex interconnections between analysis of the state of decay, history, town planning rules and technology focusing all the information on the rehabilitation task.
series	eCAADe
email
more	http://dpce.ing.unipa.it/Webshare/Wwwroot/ecaade95/Pag_4.htm
last changed	2022/06/07 07:56

_id	47ae
authors	Comair, Claude and Kaga, Atsuko
year	1995
title	Open Design Environment (ODE): Global Design Studio, Experiments in 3D City Simulation
source	Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 113-124
summary	This paper depicts the evolution of the research done at the Sasada Laboratory (Osaka University) in the fields of Architectural and Urban related Computer Simulations. This research led to the birth of what we call the "Open Development Environment" (ODE). ODE is presented in this paper through a simple example. In this example, four teams cooperate to produce the database for a simple twin tower complex. The database is kept very simple and the protocol of communication among the different teams is a new computer language called VU (Vee-You). VU was conceived and developed by Claude Comair for the specific purpose of defining architectural and urban objects.
keywords	Computer Assisted Design, Computer Languages, Computer Generated Databases, Computer Graphics, Three-Dimensional Computer Simulation
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	c3d0
authors	Cotton, John
year	1995
title	Solid Modeling as a Tool for Constructing Solar Envelopes
source	Computing in Design - Enabling, Capturing and Sharing Ideas [ACADIA Conference Proceedings / ISBN 1-880250-04-7] University of Washington (Seattle, Washington / USA) October 19-22, 1995, pp. 253-260
doi	https://doi.org/10.52842/conf.acadia.1995.253
summary	This paper presents a method for constructing solar envelopes in site planning using a 3D solid-modeling program as the tool. The solar envelope for a building site is a mechanism for ensuring that planning regulations on the solar access rights of other sites are observed. In this application, solid modeling offers the practical advantage of being a general-purpose tool having the capability to handle sets of site conditions that are quite complex. The paper reviews the concept of solar envelopes and demonstrates the method of application of solar-envelope construction to a site defined to avoid overly simplifying conditions. Techniques for displaying the constraints on building sections imposed by a solar envelope are presented as well.
series	ACADIA
email
last changed	2022/06/07 07:56

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