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

PDF papers
References

Hits 1 to 20 of 16979

Reformat results as: short short into frame detailed detailed into frame

_id	e82c
authors	Mahdavi, A., Mathew, P. and Wong, N.H.
year	1997
title	A Homology-Based Mapping Approach to Concurrent Multi-Domain Performance Evaluation
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 237-246
doi	https://doi.org/10.52842/conf.caadria.1997.237
summary	Over the past several years there have been a number of research efforts to develop integrated computational tools which seek to effectively support concurrent design and performance evaluation. In prior research, we have argued that elegant and effective solutions for concurrent, integrated design and simulation support systems can be found if the potentially existing structural homologies in general (configurational) and domain-specific (technical) building representations are creatively exploited. We present the use of such structural homologies to facilitate seamless and dynamic communication between a general building representation and multiple performance simulation modules – specifically, a thermal analysis and an air-flow simulation module. As a proof of concept, we demonstrate a computational design environment (SEMPER) that dynamically (and autonomously) links an object-oriented space-based design model, with structurally homologous object models of various simulation routines.
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	2192
authors	Mahdavi, A., Mathew, P., Hartkopf, V. and Loftness, V.
year	1996
title	Bi-directional Inference in Thermal Design
source	Design Computation: Collaboration, Reasoning, Pedagogy [ACADIA Conference Proceedings / ISBN 1-880250-05-5] Tucson (Arizona / USA) October 31 - November 2, 1996, pp. 133-143
doi	https://doi.org/10.52842/conf.acadia.1996.133
summary	This paper demonstrates a computational bi-directional energy modeling approach for building design development. Conventional simulation tools may be labeled as mono-directional in that they require a more or Iess complete design definition in order to derive performance indicators. However, in certain circumstances, it may be desirable to reverse this process: a bi-directional (or "open") inference mechanism would allow for the identification of those changes in the design variables that would accommodate a desired change in a performance indicator. The performance-to-design mapping process is an ambiguous one: the same performance (e.g. energy use of a building, temperature variations in a space) may be achieved by different design configurations (various wall and window dimensions/properties, building orientation/massing, etc.). As a result, the actual implementation of a bi-directional inference tool is a rather difficult task. The development described in this paper utilizes a preference-based approach that involves the formalization of various external or internal constraints and preferences (such as code and standard requirements, results of post-occupancy studies, individual priorities of designers and their clients, etc.) in terms of normalized numeric scales. After a brief review of the underlying technology for the implementation of the inference engine, the paper demonstrates an actual design session using a bi-directional thermal simulation tool. Specifically, a use-scenario is described in which the designer explores the tradeoffs between various design variables (glazing area, glazing type, and floor mass) in view of the resulting energy performance of a typical residential building. The paper concludes with a discussion of the potential and limitations of the bi-directional approach toward active convergence support for performance-oriented design development.
series	ACADIA
email
last changed	2022/06/07 07:59

_id	0e29
authors	Mahdavi, A.
year	1998
title	Computational decision support and the building delivery process: a necessary dialogue
source	Automation in Construction 7 (2-3) (1998) pp. 205-211
summary	The current critical discourse of computational design support systems (particularly building performance modeling tools) focuses more often than not on the `endogenous' system problems, that is deficiencies in user communication, absence of integration, and the `black-box' character of the underlying computational routines. As a result of this mostly valid criticism, work has been initiated in various quarters to improve modeling-based decision support environments. This paper argues that parallel efforts are needed to address other factors that go beyond the immediate technical realm of tool-making and involve matters pertaining to issues of building design and construction process at large. The building delivery process has traditionally been regarded as a discrete and sequential set of activities. This state of affairs is the result of a historical evolution driven by many factors, one of which might be the necessity to organize the activities for the purpose of establishing a professional fee structure that is commensurate with the scope of work and level of accountability or responsibility. However, within the context of rapidly changing building technologies, production processes, and knowledge transfer mechanisms, the existing procedural framework no longer seems capable of meeting the increasingly complex demands associated with the creation of the built environment. While the technical capabilities of decision support tools are expanding, they still fall short of challenging the very logic of the often nonintegrated processes they are designated to support. It may be understandable that, as compared to tools, processes tend to be more resilient to structural changes because of their inherent communicative nature, evolved over time through general acceptance and consensus. This paper argues, however, that careful study of the necessary conditions under which significant structural changes in the building delivery process would evolve, can effectively inform the developmental strategies in computational design support toward anticipation and encouragement of such changes.
series	journal paper
email
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	c36d
authors	Mahdavi, A.
year	1999
title	A comprehensive computational environment for performance based reasoning in building design and evaluation
source	Automation in Construction 8 (4) (1999) pp. 427-435
summary	This paper introduces a comprehensive computational implementation effort toward the incorporation of simulation-based performance evaluation in building design. Specifically, the computational design support system `SEMPER' will be described. SEMPER's main objectives are: (i) a methodologically consistent (first-principles-based) and flexible performance modeling approach through the entire building design and engineering process; (ii) provision of comprehensive, i.e., multi-domain building performance evaluation support; (iii) seamless and dynamic communication between the simulation model and the general building representation in an object-oriented space-based design environment; and (iv) active convergence support via a bi-directional inference mechanism that provides not only the conventional design-to-performance mapping option but also a `preference-based' performance-to-design mapping technology.
series	journal paper
email
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	3c98
authors	Mahdavi, Ardeshir and Ries, Robert
year	2003
title	Habitat patterns and their environmental implications
source	CORP 2003, Vienna University of Technology, 25.2.-28.2.2003 [Proceedings on CD-Rom]
summary	This paper deals with the evaluation of the environmental implication of the built environment. Specifically, it argues in favor of evaluative strategies that transcend single-criteria object-focused thinking.
keywords	Habitat; Environment; Life-cycle; Evaluation
series	other
email
last changed	2003/03/11 20:39

_id	a150
authors	Mahdavi, Ardeshir
year	1993
title	Open Simulation Environments: A “Preference-Based” Approach
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 195-214
summary	This paper introduces in conceptual, algorithmic and implementation terms, the notion of an "open" simulation environment as a "multidirectional" approach to computer-aided performance modelling. A "preference- based" formalization of design intentions/criteria is proposed to cope with the "ambiguity" problem through dynamic control of degrees of freedom of relevant design-related parameters during the interactive design process. A prototypical realization of an open simulation environment called "GESTALT' for simultaneous treatment (parametric manipulation) of various design and performance variables is demonstrated. Some preliminary results of computer-assisted generation of performance-responsive designs are presented.
keywords	Open Simulation Environments, Multidirectional Building Performance Simulation, Form-Function Mapping, Preference-Based Convergence Strategies, Preference-Index
series	CAAD Futures
email
last changed	2003/02/26 17:26

_id	6f73
authors	Mahdavi, Ardeshir
year	1997
title	Modeling-Assisted Building Control
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 219-229
summary	The architectural research on provision of computational support for the building delivery process in general and computer aided performance modeling in particular has traditionally concentrated on the building design phase. This paper argues that computational modeling can also successfully apply to the building operation phase. To demonstrate this potential the paper explores a simulation- assisted building control strategy. Specifically, the use of generate-and-test as well as bi-directional inference methods is proposed to derive preferable control schemes and required attributes for control variables based on parametric and iterative simulation runs. The feasibility of the approach is demonstrated via illustrative computational examples from the thermal control domain.
series	CAAD Futures
email
last changed	2003/02/26 17:26

_id	360e
authors	Mahdjoubi, Lamine and Wiltshire, John
year	2001
title	Towards a framework for evaluation of computer visual simulations in environmental design
source	Design Studies 22 (2) (2001) pp. 193-209
summary	Research has been conducted into the assessment of visual simulation as a credible method for predicting future environments, especially in building and landscape evaluation. Despite this work a conceptual framework to guide research and practice in this field has not been developed. The recent and increasingly widespread use of computer simulation in design has created an urgent need to develop a conceptual framework which can test prevailing assumptions and provide the basis for the development of an accepted theory in the field. This paper proposes such a framework, and identifies and relates the significant variables, which impact upon the application of visual simulation in an environmental design, task-orientated context.
series	journal paper
last changed	2003/05/15 21:45

_id	ecaade03_333_86_maher
id	ecaade03_333_86_Maher
authors	Maher, A., Woods, P. and Burry, M.
year	2003
title	Building Blobs: Embedding Research in Practice
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 333-336
doi	https://doi.org/10.52842/conf.ecaade.2003.333
summary	Through a model of engaging research in practice, we present the development of a technique for digitally resolving three-dimensional curves for documentation and fabrication. We suggest it is possible to distinguish the power of the computer as a design tool in the design development process, where the description of complex forms are not well served by the established methods of orthogonal representation.
keywords	Architectural representation; complex form fabrication; practice-based research
series	eCAADe
email
more	http://www.sial.rmit.edu.au
last changed	2022/06/07 07:59

_id	0297
authors	Maher, M-L., Simoff, J. and Cicognani, A.
year	1999
title	Understanding Virtual Design Studios
source	Springer, London
summary	Understanding Virtual Design Studios examines the issues involved in setting up and running a virtual design studio. Rather than focusing on the technology or how to apply it, the reader is presented with an interdisciplinary framework for understanding, organising, running and improving virtual design studios both in professional and educational practice. The authors assess the potential benefits, such as improved creativity and collaboration, and highlight the areas in which our understanding needs to improve; How people collaborate in an environment where interaction is mediated by shared computer resources; How to organise and manage a distributed workspace efficiently; How people represent and communicate design ideas in an electronic form. Of interest to both design professionals and researchers interested in computer-mediated collaboration, this volume will also be of interest to anyone who needs a clear picture of what this new technology can do for them
series	other
email
last changed	2003/04/23 15:14

_id	9c00
authors	Maher, M. and Simmoff, S.
year	1999
title	Variations on the Virtual Design Studio
source	Proceedings of Computer-Supported Collaborative Work in Design
summary	There are numerous approaches and techniques for setting up an environment for collaborative design. The most common approach is to extend the desktop environment to include tools for meeting and sharing files. This approach takes the individual work environment and adds tools for communicating with others. An alternative approach is to create a virtual world environment in which the collaborators meet, work, and organise their projects. This approach differs conceptually because it creates a sense of place that is unique to the project, sort of a shared office space. A variation on this approach is to create a virtual world that is the model of the product being designed. This is a more obvious choice when the product is an architectural design, but it can be extended to other kinds of design. This approach is essentially collaborating within the design. We present the three approaches and comment on their strengths and weaknesses.
series	other
last changed	2003/04/23 15:50

_id	f5a3
authors	Maher, M.L. and Gomez de Silva Garza, A.
year	1996
title	Developing case-based reasoning for structural design
source	IEEE Expert
summary	Case-based systems enable users to retrieve previously known designs from memory and adapt them to fit the current design problem. The four case-based design systems described here illustrate how various implementations achieve design assistance or design automation objectives. Case-based reasoning is a problem-solving technique that makes analogies between a problem and previously encountered situations (cases) relevant to solving the problem. Using CBR as a design process model involves the subtasks of recalling previously known designs from memory and adapting these design cases or subcases to fit the current design context. The detailed development of this process model for a particular design domain proceeds in parallel with the development of the case representation, the case memory organization, and the necessary design knowledge. The selection of an information representation paradigm and the details of its use for a problem-solving domain depend on the intended use of the information, the project information available, and the nature of the domain. CBR could be used to develop and implement a CBR system. Although that sounds circular, if CBR is a viable approach to problem solving, it can be applied to the development of the reasoning system itself. Toward that end, this article presents four "cases" of case-based building design systems that we've developed at the University of Sydney: CaseCAD, CADsyn, Win, and Demex. These systems exemplify alternative case memory contents and organizations and provide insight into different potential implementations of the recall and adaptation subprocesses.
series	journal paper
email
last changed	2003/04/23 15:14

_id	62a1
authors	Maher, M.L. and Poon, J.
year	1996
title	Modelling design exploration as co-evolution
source	Microcomputers in Civil Engineering, 11:192-207
summary	Most computer-based design tools assume designers work with a well defined problem. However, this assumption has been challenged by current research. The explorative aspect of design, especially during conceptual design, is not fully addressed. This paper introduces a model for problem-design exploration, and how this model can be implemented using the genetic algorithm (GA) paradigm. The basic GA, which does not support our exploration model, evaluates individuals from a population of design solutions with an unchanged fitness function. This approach to evaluation implements search with a prefixed goal. Modifications to the basic GA are required to support exploration. Two approaches to implement a co-evolving GA are presented and discussed in this paper: one in which the fitness function is represented within the genotype, and a second in which the fitness function is modelled as a separately evolving population of genotypes.
series	journal paper
email
last changed	2003/04/23 15:50

_id	290c
authors	Maher, M.L. and Simoff, S.
year	1999
title	Variations on a Virtual Design Studio in J-P. Barthes
source	Z. Lin and M. Ramos (eds) Proceedings of Fourth International Workshop on CSCW in Design, Universite de Technologie de Compiegne, pp.159-165
summary	There are numerous approaches and techniques for setting up an environment for collaborative design. The most common approach is to extend the desktop environment to include tools for meeting and sharing files. This approach takes the individual work environment and adds tools for communicating with others. An alternative approach is to create a virtual world environment in which the collaborators meet, work, and organise their projects. This approach differs conceptually because it creates a sense of place that is unique to the project, sort of a shared office space. A variation on this approach is to create a virtual world that is the model of the product being designed. This is a more obvious choice when the product is an architectural design, but it can be extended to other kinds of design. This approach is essentially collaborating within the design. We present the three approaches and comment on their strengths and weaknesses.
series	other
email
last changed	2003/04/23 15:50

_id	9ec6
authors	Maher, M.L., Balachandran, B. and Zhang, D.M.
year	1995
title	Case-Based Reasoning in Design
source	Lawrence Erlbaum Associates
summary	This survey presents a number of issues raised by the application of case-based reasoning for design. The authors comment on the two extremes of case-based design: design assistance and design automation, and how they share a number of difficult issues related to their implementation.
series	other
email
last changed	2003/04/23 15:14

_id	f071
authors	Maher, M.L., Cicognani, A. and Simoff, S.J.
year	1997
title	An Experimental Study of Computer Mediated Collaborative Design
source	International Journal of Design Computing, Key Centre of Design Computing, University of Sydney, Sydney
summary	The use of computer technology in design practice is moving towards a distributed resource available to a team of designers. The development of software to support designers has traditionally been based on the assumption that there will be a single person using the software at a time. Recent developments have enabled the feasibility of software for two or more simultaneous users, leading to the possibility of computer mediated collaborative design (CMCD), where the computer plays the role of mediator and design information handler. There is the potential for the computer to play a more active role in collaborative design through enhanced visibility of 3D models and assistance in generating alternative designs and design critiques. With this potential the computer not only mediates the collaborative design process but actively supports the designers. Research in integrated CAD, multimedia and design database systems, virtual design studios, and design protocol studies provide the basis for a formal study of CMCD. We have developed an experimental methodology to study the difference in design semantics documented using computer applications when designing alone as compared to designing collaboratively. This methodology can be applied to study other aspects of CMCD.
series	journal paper
email
last changed	2003/04/23 15:50

_id	a944
authors	Maher, M.L., Gero, J.S. and Saad, M.
year	1993
title	Synchronous Support and Emergence in Collaborative CAAD
source	CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 455-470
summary	Design is rarely an activity that is commenced and completed by an individual The more common design environment is one in which teams of designers work together towards a final solution. In this paper we consider issues involved in the development of computer-based design environments in which teams of design professionals can collaborate, focusing on the need for visual and underlying representations which can support multiple interpretations. We consider the environment as providing a shared workspace which facilitates both communication and progression of design ideas, concepts, and drawings. In the environment presented here, the shared workspace has two foci: the workspace that designers see and interact with, and the workspace that provides an underlying computer-based representation for persistent memory. The emphasis is on providing representations that support emergence that occurs during collaboration.
keywords	Collaborative Design, Team Design, Multi-User Synchronous CAAD, Shared Representation, Shared Workspace, Emergence
series	CAAD Futures
email
last changed	2003/05/16 20:58

_id	ecaade03_047_70_maher
id	ecaade03_047_70_maher
authors	Maher, M.L., Liew, P.-S., Gu, N. and Ding, L.
year	2003
title	An Agent Approach to Supporting Collaborative Design in 3D Virtual Worlds
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 47-52
doi	https://doi.org/10.52842/conf.ecaade.2003.047
summary	3D Virtual worlds facilitate a level of communication and collaboration not readily available in conventional CAD systems. The integration of virtual worlds and CAD systems using a common data model can make a significant impact on synchronous collaboration and real time multi-user multi-disciplinary modification of building data. By using agents, the integration of 3D virtual worlds and CAD systems can go beyond that of passive data transfer. With sensors and effectors, each agent can interact with its environment by responding to changes in the CAD system or 3D virtual world, which can take the form of an update to the geometry, or as a recommendation to change non geometric information or to propagate changes to other parts of the design. The reasoning process for each agent can vary from a reflexive behaviour in which the agent responds directly to the sensor data to a reflective behaviour in which the agents reasons about its goals and alternatives before making a change to the environment. We demonstrate this approach using ArchiCAD and Active Worlds as the CAD system and the virtual world platform. An EDM database is used as the central repository for storing the representation of the relevant data model. A multi-agent system is developed to connect the virtual world to this database to allow active data sharing. This agent approach can be extended to the integration of other applications and data models.
keywords	Design Collaboration, Virtual World, Agent and CAD
series	eCAADe
email
more	http://www.arch.usyd.edu.au/~mary
last changed	2022/06/07 07:59

_id	6ab6
authors	Maher, M.L., Rutherford, J. and Gero, J.
year	1996
title	Graduate Design Computing Teaching at the University of Sydney
source	CAADRIA ‘96 [Proceedings of The First Conference on Computer Aided Architectural Design Research in Asia / ISBN 9627-75-703-9] Hong Kong (Hong Kong) 25-27 April 1996, pp. 233-244
doi	https://doi.org/10.52842/conf.caadria.1996.233
summary	Design Computing involves the effective application of computing technologies, digital media, formal methods and design theory to the study and practice of design. Computers are assuming a prominent role in design practice. This change has been partly brought about by economic pressures to improve the efficiency of design practice, but there has also been a desire to aid the design process in order to produce better designs. The introduction of new computer-based techniques and methods generally involves a re-structuring of practice and ways of designing. We are also seeing significant current developments that have far reaching implications for the future. These innovations are occuring at a rapid rate and are imposing increasing pressures on design professionals. A re-orientation of skills is required in order to acquire and manage computer resources. If designers are to lead rather than follow developments then they need to acquire specialist knowledge – a general Computing also demands technical competence, an awareness of advances in the field and an innovative spirit to harness the technology understanding of computers and their impact, expertise in the selection and management of computer-aided design systems, and skill in the design an implementation of computer programs and systems.
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	8b35
authors	Maher, M.L., Simoff, S.J. and Mitchell, J.
year	1997
title	Formalising building requirements using an Activity/Space Model
source	Automation in Construction 6 (2) (1997) pp. 77-95
summary	The specification of the spatial requirements for a building is the basis for the architectural design of the building. The specification usually takes the form of an extensive text-based document, a briefing database for large projects, or informal discussion between the architect and the client for a small project. The specification of a building is still a hand-crafted presentation of information that is neither carried forward to the next stage of the life cycle of the building, nor formalised so that it can be effectively used for another project. This paper presents a model, specifically developed to capture the idiosyncrasies of specifying buildings, that has the potential to provide the basis for specifying buildings more generally and could provide the basis for facilitating the generation of new designs or the reuse of existing designs. The model makes explicit the representation of activities, spaces and their relationships. The continued development of the Activity/Space (A/S) Model not only provides a formal representation of requirements, but could provide a standard for product modelling of buildings.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

For more results click below: