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 ijac20075207
id ijac20075207
authors Jabi, Wassim; Potamianos, Iakovos
year 2007
title Geometry, Light, and Cosmology in the Church of Hagia Sophia
source International Journal of Architectural Computing vol. 5 - no. 2, pp. 304-319
summary Designed by a physicist and a mathematician, the Hagia Sophia church in Istanbul, Turkey acted as an experimental test case in which advanced knowledge of geometrical constructs, sophisticated understanding of light behavior, and religious and cosmological beliefs combined to create a magnificent structure. While some of its design concepts are known, many remain hidden. Earthquakes have demolished parts of the church—such as the original dome. Researchers have in the past misinterpreted their observations and perpetuated false conclusions. Lastly, the lack of digital tools has until now prevented verification and analysis of prior findings. In this paper, we integrate traditional historical research, parametric digital analysis, and lighting simulation to analyze several aspects of the church. In particular, we focus on the geometry of the floor plan, the geometry of the apse, and light behavior in the original dome. Our findings point to the potential of digital tools in the discovery of a structure's hidden features and design rules.
series journal
last changed 2007/08/29 16:23

_id 39e0
id 39e0
authors Jablonski, Allen D.
year 1991
title Integrated Component-based Computer Design Modeling System: The Implications of Control Parameters on the Design Process
source New Jersey Institute of Technology, Newark, NJ Graduate Thesis - Master's Program College of Architecture
summary The design process is dependent on a clear order of integrating and managing all of the control parameters that impact on a building's design. All component elements of a building must be defined by their: Physical and functional relations; Quantitative and calculable properties; Component and/or system functions. This requires a means of representation to depict a model of a building that can be viewed and interpreted by a variety of interested parties. These parties need different types of representation to address their individual control parameters, as each component instance has specific implications on all of the control parameters.

Representations are prepared for periodic design review either manually through hand-drawn graphics and handcrafted models; or with the aid of computer aided design programs. Computer programs can profoundly increase the speed and accuracy of the process', as well as provide a level of integration, graphic representation and simulation, untenable through a manual process.

By maintaining a single control model in an Integrated Component-based Computer Design Modeling System (ICCDMS), interested parties could access the design model at any point during the process. Each party could either: 1. Analyze individual components, or constraints of the model, for interferences against parameters within that party's control; or 2. Explore design alternatives to modify the model, and verify the integration of the components or functions, within the design model, as allowable in relation to other control parameters.

keywords Architectural Design; Data Processing
series thesis:MSc
type extended abstract
email
more http://www.library.njit.edu/etd/1990s/1990/njit-etd1990-005/njit-etd1990-005.html
last changed 2006/09/25 09:04

_id 0803
authors Jabri, Marwan A. and Skellern, David J.
year 1988
title Automatic Floorplan Design Using PIAF
source August, 1988. 36 p. : ill. tables
summary This paper presents PIAF (a Package for Intelligent and Algorithmic Floorplanning), developed at Sydney University Electrical Engineering (SUEE) for use in custom integrated circuit design. Floorplanning plays a crucial role in the design of custom integrated circuits. When design is approached in a top-down fashion, the function to be implemented on silicon is first decomposed in a conceptual phase into a Functional Block Diagram (FBD). This FBD has a 'blocks and buses' structure where blocks represent sub- functions and buses represent the interconnections that carry data and other information between blocks. The decomposition of the function into sub-functions is hierarchical and aims at reducing the complexity of the design problem. When the FBD is known, the floorplanning process may be performed. When this task is performed manually, the designer searches for a relative placement of the blocks and for an area and shape for each block to minimize the overall chip layout area while at the same time meeting design constraints such as design tool limitations, interconnection characteristics and technological design rules. PIAF is a knowledge-based system (KBS) that has been developed at SUEE during the last four years. It relies on a strategy that partitions the floorplanning task in a way that allows efficient use of heuristics and specialized design knowledge in the generation and pruning of the solution space. This paper presents the operation of PIAF and discusses several implementation issues including; KBS structure, knowledge representation, knowledge acquisition, current context memory design, design quality factors and explanation facility. This paper uses a running example to present the operation of each PIAF's KBS-based solving phases
keywords knowledge, representation, knowledge acquisition, electrical engineering, design, integrated circuits, knowledge base, systems, layout, synthesis
series CADline
last changed 2003/06/02 10:24

_id 2006_428
id 2006_428
authors Jachna, Timothy; Yasuhiro Santo and Nicole Schadewitz
year 2006
title Deep Space
source Communicating Space(s) [24th eCAADe Conference Proceedings / ISBN 0-9541183-5-9] Volos (Greece) 6-9 September 2006, pp. 428-435
doi https://doi.org/10.52842/conf.ecaade.2006.428
summary An existing café and multi-functional space at the School of Design of the Hong Kong Polytechnic University has been linked to a “twin” in the form of an online-accessible environment. Using arrays of sensors, displays and other interfaces, channels of communication are established between the virtual space and the physical space, enabling on-site visitors to the café and online visitors to the project website to participate in a shared spatial experience. The project explores ways in which digital technologies can serve to enhance and enrich the experience of spatiality and human social interaction in space(s). The paper explains the design of the modes of communication between the two spaces, outlining the theory and genesis of the project and discussing the issues and principles that come into play in the design an realization of such spaces, such as the interplay between the three-dimensionality of the physical space and the two-dimensional picture-plane based monitor interface through which the website is experienced, and strategies for the transmission of spatial experience within the strictures of commonly-available hardware and software interfaces.
keywords Interactive spaces; collaborative virtual environments; twinned spaces; mixed realities; mediated social interaction
series eCAADe
email
last changed 2022/06/07 07:52

_id avocaad_2003_01
id avocaad_2003_01
authors Jack Breen
year 2003
title VISTA VERSA – Critical Considerations on the Evolvement of Designerly Attitudes, Instruments and Networks in Design Driven Studies
source LOCAL VALUES in a NETWORKED DESIGN WORLD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Stellingwerff, Martijn and Verbeke, Johan (Eds.), (2004) DUP Science - Delft University Press, ISBN 90-407-2507-1.
summary Keynote Paper - We are all involved in design.Besides being the (sub)conscious recipients of all sorts of design driven activities, we are professionally concerned with products of design and acts of designing, either as practitioners or as academics, in some cases as both… As someone who was trained as a designer, drifted into design teaching and presently attempts to combine composition research with design practice, I feel there is a need to bridge the cultural gap between design and design research. I intend to put forward the case for more designerly approaches in the study of design. In this context I would like to discuss perspectives for design driven studies by considering the following ensemble of aspects:- the matter of shifting attitudes to design in a scientific context; - the necessity of expanding the scope of instruments of design in relation to methods and insights. - the furthering of opportunities for networks aimed at bringing out and communicating findings concerning different aspects of design.It is on the topic of interaction, between the targeted creativity of designing on the one hand and the open minded search for relevant knowledge, insights and applications on the other, that I would like to dwell. Furthermore, I hope to provoke some thoughts – and hopefully responses – concerning the roles of computer based applications in such studies. What kinds of impulses have computer technologies offered, should they perhaps have offered and indeed might they still be able to offer in this field? I would like to by take a critical look back and try to turn things around, towards a possible view forward…
keywords Architecture, Local values, Globalisation, Computer Aided Architectural Design
series AVOCAAD
email
last changed 2006/01/16 21:38

_id cbe9
authors Jacob, Robert J.K.
year 1983
title Using Formal Specifications in the Design of a Human-Computer Interface
source Communications of the ACM April, 1983. vol. 26: pp. 259-264 : diagrams. includes bibliography.
summary Formal specification techniques are valuable in software development because they permit a designer to describe the external behavior of a system precisely without specifying its internal implementation. Although formal specifications have been applied to many areas of software systems, they have not been widely used for specifying user interfaces. In the Military Message System project at the Naval Research Laboratory, the user interfaces as well as the other components of a family of message systems are specified formally, and prototypes are then implemented from the specifications. This paper illustrates the specification of the user interface module for the family of message systems. It then surveys specification techniques that can be applied to human-computer interfaces and divides the techniques into two categories: those based on state transition diagrams and those based on BNF. Examples of both types of specifications are given. Specification notations based on state transition diagrams are preferable to those based on BNF because the former capture the surface structure of the user interface more perspicuously. In either notation, high-level abstraction for describing the semantics of the user interface is needed, and an application-specific one is used here
keywords user interface, design, theory
series CADline
last changed 2003/06/02 13:58

_id caadria2007_329
id caadria2007_329
authors Jacobs, Zhya
year 2007
title Capturing the Infinite: Bottom up CAD - CAM Technology for Regenerative Development
source CAADRIA 2007 [Proceedings of the 12th International Conference on Computer Aided Architectural Design Research in Asia] Nanjing (China) 19-21 April 2007
doi https://doi.org/10.52842/conf.caadria.2007.x.b0l
summary In most design practices there is a division between the generation of information to describe buildings and the production of information to construct them. Today architects are in charge of the design of the building (aesthetics) while the contractor is accountable for the means of construction (tectonics). The advent of digital technologies within the field of architecture however has begun to cause and will continue to cause fundamental changes within the AEC industry. The Paper describes a possible scenario where a Bottom – Up, part to whole approach to architecture can be adopted using the freedom afforded by Parametric Design within the CAD-CAM environment. This approach is explored through the design of a smart block in concrete that is integrated into a wall system.
series CAADRIA
email
last changed 2022/06/07 07:50

_id 6f36
authors Jacobson, I., Christerson, M., Jonsson, P. and Overgaard, G.
year 1992
title Object-Oriented Software Engineering
source A Use Case Driven Approach. New York, NY: Addison-Wesley
summary A text on industrial system development using object- oriented techniques, rather than a book on object-oriented programming. Will be useful to systems developers and those seeking a deeper understanding of object orientation as it relates to the development process.
series other
last changed 2003/04/23 15:14

_id avocaad_2003_23
id avocaad_2003_23
authors Jadwiga C. Zarnowiecka
year 2003
title AND WOULD COMPUTER SAVE THE MAGIC PLACE? A BOJARY STORY
source LOCAL VALUES in a NETWORKED DESIGN WORLD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Stellingwerff, Martijn and Verbeke, Johan (Eds.), (2004) DUP Science - Delft University Press, ISBN 90-407-2507-1.
summary Each city has its own magic, the spirit of the place. Not always are these ‘magic’ places commonly known. There are cities, however, for which such places are their pride and fame. Is there anybody who would not associate the Golden Street with Prague, or the Spanish Stairs with Rome? In Bialystok the magic quality is attributed to the district of Bojary.Currently Bojary is one of the districts of Bialystok. The town was first created as such in the 18th century as a result of merging of two villages: Bojary and Skorupy, church grounds and Kolonia Lowiecka known as Krolikarnia. Only Bojary has retained the old communication plan of the former village and characteristic type of wooden structure from the 19th and the first half of the 20th century.
keywords Architecture, Local values, Globalisation, Computer Aided Architectural Design
series AVOCAAD
type normal paper
email
last changed 2006/01/16 21:38

_id caadria2005_b_3b_b
id caadria2005_b_3b_b
authors Jae Hwan Jung
year 2005
title Algorithmic forest: A Study to Generate ‘Lighting-Revealing’ Structure by Algorithm
source CAADRIA 2005 [Proceedings of the 10th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] New Delhi (India) 28-30 April 2005, vol. 2, pp. 61-70
doi https://doi.org/10.52842/conf.caadria.2005.061
summary In today’s world of architectural design the use of computational technology as drawing and modeling tools is ubiquitous. However, the typical use of the computer as a design tool generally limits the creative aspect of architectural design. Incorporating algorithm can enhance traditional “manual” methods of CAD based design, as well as furthering human intellect in the field of architectural design. The research to be presented will demonstrate the potential benefits of algorithms by using them to design and generate a structure that creates variable lighting effects similar to those created by natural light shining through trees in a forest.
series CAADRIA
email
last changed 2022/06/07 07:52

_id 513caadria2004
id 513caadria2004
authors Jaeho Ryu, Naoki Hashimoto, Shoichi Hasegawa, Makoto Sato
year 2004
title Multi-Projection Display System D-Vision for Architectural Design Evaluation
source CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 901-910
doi https://doi.org/10.52842/conf.caadria.2004.901
summary This is a paper about the introduction of architectural design evaluation application and pre-experience system of walkthrough situation in urban and street design. For this purpose, we developed a new multi-projection display system, D-vision, which has hybrid screens. D-vision is a kind of new virtual environment system that has high immersion and high resolution display performance with multi-modal interfaces. In our system, the user can experience the high sense of presence through the self-walking behavior to move and force feedback manipulation of objects with the high-resolution image created from the tiled-projection system that is composed of twentyfour projectors.
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2005_b_3c_d
id caadria2005_b_3c_d
authors Jaeho Ryu, Naoki Hashimoto,, Makoto Sato
year 2005
title Study on Factors of Distance Estimation at Architectural Presentation Tool in Immersive Virtual Environments
source CAADRIA 2005 [Proceedings of the 10th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] New Delhi (India) 28-30 April 2005, vol. 2, pp. 116-122
doi https://doi.org/10.52842/conf.caadria.2005.116
summary The VR technology has been used as the application of architectural presentation tool in the field of industry. The high immersion and intuitive visual information are the great merits of design evaluation when we are using the virtual environments. But the distortion of distance perception in VR is a problem when the accuracy of distance presentation is required to evaluate the preliminary design concept precisely. In this paper, we have carried out some experiments about distance estimation in the immersive virtual environments to verity the factors and their influence. First, we verify the difference of distance estimation in the real and the virtual hallway. The result showed that subjects underestimate the walked distance in the condition of virtual hallway. At the next experiment about the influence of image-resolution, we have figured out the resolution has affected on the distance estimation in the virtual environments.
series CAADRIA
email
last changed 2022/06/07 07:52

_id 509caadria2004
id 509caadria2004
authors Jaewook Lee, Yongwook Jeong, Seung Wook Kim, Yehuda E. Kalay
year 2004
title Intelligent Behavior Control of 3D Objects in Virtual Environments
source CAADRIA 2004 [Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3] Seoul Korea 28-30 April 2004, pp. 845-856
doi https://doi.org/10.52842/conf.caadria.2004.845
summary Cyberspace is more malleable than a physical environment, so it can afford much wider range of responsiveness. By applying the concept of place-making, we are experimenting virtual environments which are responsive to their users’ context-specific needs. Since objects are essential components that anchor the users’ various activities, having interactive objects in a 3D virtual environment is a major design concern for developing a dynamic and experience-rich virtual environment. We propose a layered agent model for intelligent behavior control of 3D objects, based on constraint solving process.
series CAADRIA
email
last changed 2022/06/07 07:52

_id 9554
authors Jagbeck, A.
year 2000
title Field test of a product-model-based construction planning tool
source CIDAC, Volume 2 Issue 2 May 2000, pp. 80-91
summary Over the past decade, more than a dozen papers describing proposals for product-model-based planning models have been published, but only a few of these proposals have been implemented in prototypes that have been tested in full-scale tests. PreFacto is a research-based software for production planning based on product model data, which has been developed and tested in close cooperation with a construction company. It is operational but still under development. Assessing the degree of functionality achieved so far is a natural part of a modern cyclical software development process. This paper describes a 6-month full-scale field trial of the PreFacto system undertaken by the site management in cooperation with the author. It was carried out as a parallel planning activity on a real ongoing project. The trial was documented and the system's usability for the construction planning process was analysed and evaluated using mainly qualitative methods. The evaluated planning activities include importing product model data and performing a range of planning activities. The evaluation addressed such usability aspects as system capacity, ease of use of the interface, and conceptual compliance with the use context and the various planning tasks. The test method was useful for checking the conceptual model from the user's point of view. At the same time, the field trial worked equally as a case study for developers, a study of a degree of reality that would not have been possible in a laboratory situation. Apart from the evaluation of the features of the software itself, there are some results of general interest. the main result was that all the advantages of the system derive from the connection between design and planning, i.e. the use of a product model as a basis for defining the result of production tasks. Allowing production managers to freely structure tasks and to apply resource recipes were the most relevant functions.
keywords Integration, Information, Construction, Planning, Field Trial, Product Model
series journal paper
last changed 2003/05/15 21:23

_id a5a3
authors Jagielski, Romuald and Gero, John S.
year 1997
title A Genetic Programming Approach to the Space Layout Planning Problem
source CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 875-884
summary The space layout planning problem belongs to the class of NP-hard problems with a wide range of practical applications. Many algorithms have been developed in the past, however recently evolutionary techniques have emerged as an alternative approach to their solution. In this paper, a genetic programming approach, one variation of evolutionary computation, is discussed. A representation of the space layout planning problem suitable for genetic programming is presented along with some implementation details and results.
series CAAD Futures
email
last changed 2003/02/23 11:00

_id ecaade2017_149
id ecaade2017_149
authors Jahanara, Alireza and Fioravanti, Antonio
year 2017
title Kinetic Shading System as a means for Optimizing Energy Load - A Parametric Approach to Optimize Daylight Performance for an Office Building in Rome
source Fioravanti, A, Cursi, S, Elahmar, S, Gargaro, S, Loffreda, G, Novembri, G, Trento, A (eds.), ShoCK! - Sharing Computational Knowledge! - Proceedings of the 35th eCAADe Conference - Volume 2, Sapienza University of Rome, Rome, Italy, 20-22 September 2017, pp. 231-240
doi https://doi.org/10.52842/conf.ecaade.2017.2.231
summary Current research, as a part of on-going PhD research, explores the possibilities of dynamic pattern inspired from biomimetic design and presents a structured framework for light to manage strategies. The experiment stresses the improvement of daylight performance through the design and motion of kinetic facades using various integrated software.The impact of kinetic motion of hexagonal pattern was studied by integrating triangle and triangle covering through blooming pyramids on south-facing skin to control the daylight distribution, using a parametric simulation technique. The simulation was carried out for a south oriented façade of an office room in Rome, Italy over three phases. The first optimized results represent the static base case, which were compared to the other two proposed dynamic models in this research. Results demonstrate that dynamic façade achieved a better daylighting performance in comparison to optimized static base case.
keywords Bio-Inspired Pattern; Parametric Design; Dynamic Façade; Daylighting
series eCAADe
email
last changed 2022/06/07 07:52

_id ecaade2023_198
id ecaade2023_198
authors Jahandideh, Romman, Jahandideh, Aran and Kim, Ikhwan
year 2023
title Creating Immersive Virtual Landscapes A User-Centered Approach to Enhance Depth Perception in Head-Mounted Displays
source Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 1, Graz, 20-22 September 2023, pp. 149–158
doi https://doi.org/10.52842/conf.ecaade.2023.1.149
summary This paper investigates the effects of color, luminance, and transparency as depth distortion cues in Virtual Reality (VR) Head-mounted Displays (HMD). The aim is to tackle more in-depth immersion: focusing on interaction accuracy with transparent objects in HMDs. Due to the illumination and absence of texture, transparent objects are mainly displayed with colors. Recently, studies on transparent hands and objects have elucidated potential approaches regarding interaction with transparent elements. However, findings have not considered color and luminance as depth distortion cues for interacting in virtual landscapes. This paper used the forced-choice pairwise comparison experiment method and evaluated data based on the Kendall coefficient of agreement and consistency. Reverse effects of transparency on color and luminance are discovered. Cool colors are perceived nearer than warm colors in 90% transparency. Dark colors are sensed closer than bright colors in high transparency levels. These results reject the classical effects of color and luminance within VR HMDs. These findings help VR design tool developers who emphasize a particular use of depth cues. Designers can utilize the studied effects of color and luminance on transparent objects as an advantage in designing more interactive and immersive virtual landscapes.
keywords Virtual Landscapes, Immersion, Human-Computer Interaction, VR Head Mounted Displays, Depth Perception
series eCAADe
email
last changed 2023/12/10 10:49

_id b989
authors Jahn, Gonzalo Vélez
year 1999
title Realidad Virtual en Arquitectura - Actualidad y Futuro (Virtual Reality in Architecture - The Present and the Future)
source III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 79-82
summary During recent years, developments in the area of virtual reality and its applications in architecture have undergone a number of important transformations that point out the need of an updated revision and adjustment as regards its current situation status and also that which concerns its potentialities within a foreseeable future. This paper seeks to provide an ample vision about recent developments of VR in architectural applications and, also, about its potential developments within the settings provided by such imminent phenomena as the upcoming Internet II and its future impact on the three dimensional and multisensorial qualities of the information that will move within cyberspace in the next decades. The paper also comments on experiencies underway at the Laboratory of Advanced Techniques in Design, Faculty of Architecture and Urbanism, Universidad Central de Venezuela in collaboration with the Laboratory of Computer Graphics, School of Computing, also at UCV, Caracas. Finally, a number of considerations and conjectures are dedicated to the new field of VR multi-access worlds and its potential to virtual architectural modeling in the Intenet-WWW.
series SIGRADI
email
last changed 2016/03/10 09:53

_id caadria2022_296
id caadria2022_296
authors Jahn, Gwyllim, Newnham, Cameron and van den Berg, Nick
year 2022
title Augmented Reality for Construction From Steam-Bent Timber
source Jeroen van Ameijde, Nicole Gardner, Kyung Hoon Hyun, Dan Luo, Urvi Sheth (eds.), POST-CARBON - Proceedings of the 27th CAADRIA Conference, Sydney, 9-15 April 2022, pp. 191-200
doi https://doi.org/10.52842/conf.caadria.2022.2.191
summary Digital models viewed in augmented reality can serve as guides to form and assemble parts during construction and reduce the need to build temporary formwork or sub structures. However, static digital models are often inadequate for describing the behaviour of material that is dynamically formed over time, leading to breakages and difficulty following augmented reality guides during assembly. To address this issue, we propose a method for fast and approximate simulation of material behaviour using a goal-based physics solver, enabling the design and fabrication of steam bent timber parts using an adaptable system of sparse formwork. Through the design and construction of a pavilion from steam bent timber we demonstrate that approximate simulation of material behaviour is adequate for wide tolerance construction by hand and eye in augmented reality, avoiding part breakages and accumulative error.
keywords Augmented Reality, Digital Fabrication, Generative Design, Material Simulation, SDG 9
series CAADRIA
email
last changed 2022/07/22 07:34

_id acadia14_135
id acadia14_135
authors Jahn, Gwyllim; Morgan, Thomas; Roudavski, Stanlislav
year 2014
title Mesh Agency
source ACADIA 14: Design Agency [Proceedings of the 34th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 9781926724478]Los Angeles 23-25 October, 2014), pp. 135-144
doi https://doi.org/10.52842/conf.acadia.2014.135
summary The paper argues that artifacts of meshes derived from generative processes can prompt designers to seed, analyze, and interact with phenomena otherwise withdrawn from habitual human perception.
keywords digital materiality, modelling and simulation, speculative design, computational creativity, emergence and self-organization, non-human agency
series ACADIA
type Normal Paper
email
last changed 2022/06/07 07:52

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