Cumincad : CUMINCAD Papers : Search Results

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

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_id	246c
authors	Mahdavi, A. and Pal, V.
year	1997
title	On the Problem of Operative Information in CAAD
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 231-244
summary	Computational building performance modeling typically generates large amounts of data. For this data to become operative information, i.e., provide effective feedback to the design process, it must adequately interface with the informational requirements and procedural characteristics of the building delivery process. Toward this end, this paper specifically addresses the potential of aggregate space-time performance indicators.
series	CAAD Futures
email
last changed	2003/02/26 17:26

_id	bf16
authors	Mahdavi, A. and Suter, G.
year	1998
title	On the implications of design process views for the development of computational design support tools
source	Automation in Construction 7 (2-3) (1998) pp. 189-204
summary	The empirical evidence indicates that the computational evaluation tools are not sufficiently and consistently used in the architectural design process. Various contributing factors have been suggested, most of which deal with tool deficiencies in terms of user communication features, stand-alone character, and informational complexity. Without questioning the potential impact of these factors, we suggest that circumstances pertaining to the representation and understanding of the design process must be taken into consideration, if a more in-depth understanding of the problem of tool deployment is to be achieved. Toward this end, we explore the possible impact of alternative design process views on the development of computational design evaluation tools. In particular, we describe how a nonconventional view of the design process can inform implementation efforts that lead to the emergence of new tools for active convergence support in design.
series	journal paper
email
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	ddss9840
id	ddss9840
authors	Mahdavi, A., Akin, Ö. and Zhang, Y.
year	1998
title	Formalization of Concurrent Performance Requirementsin Building Problem Composition
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Specification of performance requirements is an emerging area of research that promises to improve building design particularly during the early stages of design. Building problem decomposition and recomposition can be based on a number of requirement categories in order to group buildingfunctions into hierarchically organized groups. Traditionally this activity is known as stacking and blocking, or zoning; and limited to spatial requirements. Our long term objective is to broaden this set into a more comprehensive one, including thermal, acoustic, and daylighting; and improve the stateof- the-art in building performance specification. While domain information from various building performance areas may be applicable toward enriching the informational basis for stacking andblocking operations, this paper focuses primarily on the thermal and acoustic domain.
series	DDSS
last changed	2003/08/07 16:36

_id	7313
authors	Mahdavi, A., Brahme, R. and Gupta, S.
year	2001
title	Performance-based computational design via differential modeling and two-staged mapping
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 667-680
summary	Computational performance-based building design support faces a conflict. It is important to provide building performance feed back to the designer as early as possible in the design process. But many aspects of building performance are significantly affected by the design of the building’s technical systems, which are typically configured in detail only in the later stages of design. The challenge is thus to find a method to use detailed simulation tools even during the early stages of design when values for many of the variables for the building’s technical sub-systems are not yet available. In this paper, we demonstrate how this problem can be partially solved by combining two levels of automation. The first level consists of differential building representation involving a number of domain (application-specific) object models that are derived from a shared object model automatically. The second level uses generative agents that create reference designs for the technical sub-systems of the building. To demonstrate the feasibility of the proposed approach, we use the building energy systems domain (heating, cooling, ventilation, and air-conditioning) as a case in point.
keywords	Building Performance Simulation, Homology-Based Mapping, Intelligent Design Agents
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	d6d5
authors	Mahdavi, A., Mathew, P., Kumar, S. and Wong, N.
year	1997
title	Bi-directional computational design support in the SEMPER environment
source	Automation in Construction 6 (4) (1997) pp. 353-373
summary	We present a computational environment for bi-directional multi-domain building design support. We first describe the overall structure and the salient features of this computational environment (SEMPER). We then discuss in detail its bi-directional inference capability. We conclude with illustrative case studies.
series	journal paper
email
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_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
doi	https://doi.org/10.52842/conf.caadria.1997.237
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
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
doi	https://doi.org/10.52842/conf.acadia.1996.133
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
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	e02e
authors	Mahdavi, A., Mathew, P., Lee, S., Brahme, R., Kumar, S., Liu, G., Ries, R. and Wong, N.H.
year	1996
title	On the Structure and Elements of SEMPER
doi	https://doi.org/10.52842/conf.acadia.1996.071
source	Design Computation: Collaboration, Reasoning, Pedagogy [ACADIA Conference Proceedings / ISBN 1-880250-05-5] Tucson (Arizona / USA) October 31 - November 2, 1996, pp. 71-84
summary	This paper introduces the concept, structure, components, and application results of "SEMPER", an active, multi-aspect computational tool for comprehensive simulation-based design assistance. Specifically, SEMPER seeks to meet the following requirements: a) a methodologically consistent (first- principles-based) performance modeling approach through the entire building design and engineering process; b) seamless and dynamic communication between the simulation models and an object- oriented space-based design environment using the structural homology of various domain representations; and c) "preference-based" performance-to-design mapping technology (bidirectional inference). SEMPER involves the integrated computational modeling of heat transfer, air flow, HVAC system performance, thermal comfort, daylighting and electrical lighting, acoustics, and life-cycle assessment.
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	ddss9839
id	ddss9839
authors	Mahdavi, Ardeshir
year	1998
title	A Middle Way to Integration
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Integration in computer-aided design denotes systematic incorporation of multiple domain applications within a unified computational design support environment. At one end of the spectrum of integration efforts, there is a top-down approach involving an all-encompassing maximal building representation. On the other end, there is bottom-up approach involving the ad hoc and as-needed production of translator and mediator routines to enable various existing applications to communicate with each other. This paper describes the development of a design support system which represents a middle way to integration: while it assumes that, at a fundamental level, some shared notation of the constitutive building entities and their spatial relationships is sine qua non, it assumes that this notation is not a primary necessity, but must be tested against the requirements of the "down-the-line" manipulators of the entities encapsulated by it.
series	DDSS
last changed	2003/08/07 16:36

_id	ddssar0222
id	ddssar0222
authors	Mahdavi, Ardeshir and Gurtekin, Beran
year	2002
title	Shapes, Numbers, Perception: Aspects and Dimensions of the Design-Performance Space
source	Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings Avegoor, the Netherlands), 2002
summary	The design-performance space denotes a virtual space that can be constructed based on discretized design variables and performance indicators. For an n-dimensional design-performance space, n = d + p,whereby d = the number of discrete design variables, and p = the number of discrete performance indicators. Once constructed, this space can be visualized and used by the designer to explore the relationship between design variables and corresponding performance attributes. We present, for the building design domain, an approach to generation and exploration of the design-performance space. In this approach, an initial design is used to generate a set of alternative designs that collectively constitutethe design space. One way of doing this relies on the "scalarization" of design variables. The scalarization leads to the representation of a building as a point in a d-dimensional design space. Each coordinate ofsuch a space accommodates a salient (semantic or geometric) design variable. Subsequently, the entire corpus of design alternatives is subjected to performance modeling. Based on the modeling results, an ndimensionaldesign-performance space is constructed. We specifically address the potential for and limitations of describing building geometry in terms of a continuous scalar dimension of the design space. We introduce the concept of "Relative Compactness", which is derived by comparing the volume tosurface area ratio of a shape to that of a (compact) reference shape with the same volume. We present the results of an empirical study, which shows a significant correlation between the numeric values of relativecompactness and the subjective evaluation of the compactness of architectural shapes.
keywords	Buildings, design, performance, simulation, geometry
series	DDSS
last changed	2003/08/07 16:36

_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	498a
authors	Mahdavi, Ardeshir
year	1997
title	A Negentropic View of Computational Modeling
doi	https://doi.org/10.52842/conf.caadria.1997.107
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. 107-121
summary	I propose a systemic view of computational modeling in architecture that is inspired by concepts in human ecology, information theory and thermodynamics.
series	CAADRIA
email
last changed	2022/06/07 07:59

_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	ascaad2012_001
id	ascaad2012_001
authors	Mahdjoubi, Lamine
year	2012
title	Digital Architecture at Crossroads – Transition from Simulation and Visualisation to Information Modelling
source	CAAD \| INNOVATION \| PRACTICE [6th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2012 / ISBN 978-99958-2-063-3], Manama (Kingdom of Bahrain), 21-23 February 2012, pp. 5
summary	Digital architecture is at an exciting but challenging stage of its development. Past decades have witnessed important developments in computer-generated architectural representations. These tools have complemented and, in some cases, superseded the traditional forms of design and communication. In parallel with progress in computer graphics, advances in computer generated architectural representations have evolved to deliver photorealistic computer generated imagery. However, there is evidence to suggest that these advances have not significantly enhanced collaborative practices. It was acknowledged that to address the fragmentation of the industry, a fundamental change to deliver digital architecture was needed. Dealing with the requirements for an improved co-ordination and co-operation between designers and other stakeholders to encourage more integration has therefore become a central issue in the last decade. It was also recognised that significantly more intelligence needs to be brought to bear on the decision-making process if the targets set by the sustainability agenda are to be met. The quest for an improved quality of information and decision making has shifted the emphasis from computer-generated imagery to integrated building information. The recent emergence of building information modelling (BIM) constitutes one of the most exciting developments in the field. It was suggested that BIM will deliver considerable sophistication and judgment in decision-making. This keynote speech seeks to examine the implications of the transition of digital architecture from simulation and visualisation to information modelling. It aims to shed light on the methodological and technological challenges facing practitioners, researchers, and software developers, as a result of the early adoption of BIM.
series	ASCAAD
type	keynote paper
email
more	http://www.ascaad.org/conference/2012/papers/ascaad2012_001.pdf
last changed	2012/05/15 20:46

_id	acadia06_200
id	acadia06_200
authors	Maher, A., Burry, J.
year	2006
title	The Re-Engineering Project Developing Pedagogical Frameworks for Early Stage Collaborative Design between Engineers and Architects
doi	https://doi.org/10.52842/conf.acadia.2006.200
source	Synthetic Landscapes [Proceedings of the 25th Annual Conference of the Association for Computer-Aided Design in Architecture] pp. 200-212
summary	We describe a research-based design studio entitled Reengineering, brought together by two research groups with the aim of further understanding factors that promote conceptual design for interdisciplinary work between architects and engineers. The aim, through a sequence of semi-structured projects, was to reflect upon the students’ attempts both at a co-rational (Fischer 2006) approach to design and at the culmination of each stage to return to the beginning albeit with a more sophisticated understanding of the work. Through this process we found that a close-coupled design process was achieved between these disciplines at a conceptual level but when the participants developed a shared understanding supported by a project language and when each eschewed their discipline specific tools a co-rational approach was obtained.
series	ACADIA
email
last changed	2022/06/07 07:59

_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
doi	https://doi.org/10.52842/conf.ecaade.2003.333
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 333-336
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	6533
authors	Maher, A.M. and Burry, M.C.
year	2002
title	Hybridized Measurement: Interpreting historical images of Sagrada Família Church in Barcelona using CAD-based digital photogrammetry
doi	https://doi.org/10.52842/conf.ecaade.2002.448
source	Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedings / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 448-455
summary	This paper gives an account of the extrapolated use of digital photogrammetry undertaken by the Spatial Information Architecture Laboratory (SIAL) in the pursuit for new interpretations of historical images at the Sagrada Família Church. The work is an extension of the research activities undertaken as part of the Australian Research Council (ARC) Strategic Partnerships with Industry – Research and Training (SPIRT) project New onto Old : 3D flexible computer modelling to aid heritage building restoration, recycling and extension, where digital photogrammetry was first explored as a measurement tool for non-specialist implementation. The research makes use of the link between Computer Aided Design (CAD) and digital photogrammetry in a reverse manner, using built spatial data to produce orthographic rectified images of what was intended from the historical drawings and models of the architect Antoni Gaudí (1852-1926).
series	eCAADe
email
last changed	2022/06/07 07:59

_id	acadia03_005
id	acadia03_005
authors	Maher, Andrew and Burry, Mark
year	2003
title	The Parametric Bridge: Connecting Digital Design Techniques in Architecture And Engineering
doi	https://doi.org/10.52842/conf.acadia.2003.039
source	Connecting >> Crossroads of Digital Discourse [Proceedings of the 2003 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-12-8] Indianapolis (Indiana) 24-27 October 2003, pp. 39-47
summary	New design opportunities that are facilitated by cross-disciplinary collaboration in both practice and research are available through the use of high level design software that simultaneously offers real time access to both analysis and design geometry in shared three-dimensional digital models. Here we present a collaborative research project between architects and structural engineers for the design of a pedestrian bridge, conceived to test current digital design processes in architectural and structural engineering practice with those in research through the use of models of parametrically defined associative geometry. In this project, the digital model’s architectural design geometry was constrained by the bridge’s fabrication methods and linked with its engineering analysis. Iterations of the design geometry were then optimised or ‘solved’ to produce variations according to the design parameters offered up for change. The shift of the professions from the plane to digital space exposes the possibilities of new design techniques with the exchange of design parameters potentially operating as a digital dialogue between the disciplines—a kind of digital version of Antoni Gaudi’s funicular hanging model—a metaphor of the digital space that has been developed for this project.
series	ACADIA
email
last changed	2022/06/07 07:59

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