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	a88f
authors	Liggett, Robin , Jepson, William and Teodosiadis, Stephen
year	1991
title	A Stratified Approach to the Integration of Low Cost Modelling with Advanced Technology Rendering
source	Computer Aided Architectural Design Futures: Education, Research, Applications [CAAD Futures ‘91 Conference Proceedings / ISBN 3-528-08821-4] Zürich (Switzerland), July 1991, pp. 105-120
summary	This paper presents a stratified approach to the integration of low cost modeling software (such as AutoCAD) with advanced workstation based rendering systems (such as Wavefront and the Silicon Graphics radiosity renderer). Powerful extensions to the basic modeling system are introduced which greatly reduce the required design effort, while significantly increasing the efficiency of the rendering software.
series	CAAD Futures
last changed	1999/04/07 12:03

_id	eb7b
authors	Liggett, Robin S.
year	1980
title	The Quadratic Assignment problem: an Analysis of Applications and Solution Strategies
source	Environment and Planning B. 1980. vol. 7: pp. 141-162 : tables. includes bibliography
summary	A wide variety of practical problem in design, planning and management can be formulated as quadratic assignment problems, and this paper discusses this class of problem. Since algorithms for producing optimal solutions to such problems are computationally infeasible for all but small problems of this type, heuristic techniques must usually be employed for the solution of real practical problems. This paper explores and compares a variety of solution techniques found in the literature considering the trade-offs between computational efficiency and quality of solutions generated. Recommendations are made about the key factors to be considered in developing and applying heuristic solution procedures
keywords	design process, algorithms, graphs, quadratic assignment, operations research, optimization, automation, synthesis, heuristics, space allocation, floor plans, management, planning
series	CADline
email
last changed	2003/06/02 13:58

_id	8488
authors	Liggett, Robin S.
year	1992
title	A Designer-Automated Algorithm Partnership : An Interactive Graphic Approach to Facility Layout
source	New York: John Wiley & Sons, 1992. pp. 101-123 : ill. includes bibliography
summary	Automated solution technique for spatial allocation problems have long been an interest of researchers in computer-aided design. This paper describes research focusing on the use of an interactive graphic interface for the solution of facility layout problems which have quantifyable but sometimes competing criteria. The ideas presented in the paper have been implemented in a personal computer system
keywords	algorithms, user interface, layout, synthesis, floor plans, architecture, facilities planning, automation, space allocation, optimization
series	CADline
email
last changed	2003/06/02 13:58

_id	b76e
authors	Liggett, Robin S.
year	2000
title	Automated facilities layout: past, present and future
source	Automation in Construction 9 (2) (2000) pp. 197-215
summary	This paper reviews the history of automated facility layout, focusing particularly on a set of techniques which optimize a single objective function. Applications of algorithms to a variety of space allocation problems are presented and evaluated. Guidelines for future implementations of commercial systems are suggested.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	ecaade2015_253
id	ecaade2015_253
authors	Ligler, Heather and Economou, Athanassios
year	2015
title	Entelechy I - Towards a Formal Specification of John Portman's Domestic Architecture
doi	https://doi.org/10.52842/conf.ecaade.2015.1.445
source	Martens, B, Wurzer, G, Grasl T, Lorenz, WE and Schaffranek, R (eds.), Real Time - Proceedings of the 33rd eCAADe Conference - Volume 1, Vienna University of Technology, Vienna, Austria, 16-18 September 2015, pp. 445-452
summary	John Portman's work attracts much interest, although little scholarship exists that directly engages his contribution in formal composition. Most of the discussion of Portman's architecture tends to focus on his commercial work and hotels, although a key to understanding his work is found in his personal domestic projects where he has had the freedom to explore his architectural ideas. This study focuses on his first residence, Entelechy I, to begin outlining his design principles formally. The ambition is to open up the whole question of his architectural contribution in the United States and at large.
wos	WOS:000372317300048
series	eCAADe
email
last changed	2022/06/07 07:59

_id	acadia07_000
id	acadia07_000
authors	Lilley, Brian, Beesley, Philip (eds.)
year	2007
title	Expanding Bodies: Art • Cities• Environment
doi	https://doi.org/10.52842/conf.acadia.2007
source	Proceedings of the 27rd Annual Conference of the Association for Computer Aided Design in Architecture / ISBN 978-0-9780978-6-8] Halifax (Nova Scotia) 1-17 October, 2007.
series	ACADIA
last changed	2022/06/07 07:49

_id	ecaade2021_059
id	ecaade2021_059
authors	Lim, Ariel Cheng Sin and Thomsen, Mette Ramsgaard
year	2021
title	Multi-Material Fabrication for Biodegradable Structures - Enabling the printing of porous mycelium composite structures
doi	https://doi.org/10.52842/conf.ecaade.2021.1.085
source	Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 1, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 85-94
summary	Our awareness of the earth's depleting resources has directed focus towards biomaterials, which can be extracted sustainably and biodegraded after use. Current fabrication of biomaterial structures is still restricted in strength and geometry, limiting its use in construction. This paper presents a novel two-phase multi-material fabrication process to create mycelium composite structures of higher porosity and complexity with speculated improvements in strength. First, cellulose pulp inoculated with mycelium is extruded. Then, each layer is filled by a secondary supporting material. This material, in the form of a gravel- and sand-slurry, acts as an inhospitable medium steering mycelial growth, additionally improving aeration to produce stronger structures. After an intermediate growth period, the secondary material, reusable in a closed-loop production model, is removed to reveal the fully-grown mycelium structure. The paper reports on each of the three aspects: the fabrication process, material experimentation of primary and secondary substrates, as well as geometry of varying porosity and performance.
keywords	biomaterials; mycelium; biodegradable structures; robotic fabrication; additive manufacturing
series	eCAADe
email
last changed	2022/06/07 07:59

_id	ijac20108304
id	ijac20108304
authors	Lim, Chor-Kheng
year	2010
title	A framework of CAD/CAM design and construction process for freeform architecture: a case study
source	International Journal of Architectural Computing vol. 8 - no. 3, pp. 301-318
summary	This research aims to analyze the design and construction process of the built freeform architectural projects and understand deeply the applications of the CAD/CAM media tools, and come up with a preliminary framework of an executable general CAD/CAM design and construction process in freeform architectural design.
series	journal
last changed	2019/05/24 09:55

_id	caadria2014_529
id	caadria2014_529
authors	Lim, Chor-Kheng
year	2014
title	Waters: An Interactive 3D-Printed Customized Planter Design for the Elderly
doi	https://doi.org/10.52842/conf.caadria.2014.969
source	Rethinking Comprehensive Design: Speculative Counterculture, Proceedings of the 19th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2014) / Kyoto 14-16 May 2014, pp. 969–970
series	CAADRIA
type	poster
email
last changed	2022/06/07 07:52

_id	caadria2022_496
id	caadria2022_496
authors	Lim, Chor-Kheng
year	2022
title	Presence Stickers: A Seamlessly Integrated Smart Living System at a Solitary Elderly Home
doi	https://doi.org/10.52842/conf.caadria.2022.1.445
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. 445-454
summary	This research develops Presence Stickers, the capacitive sensing module that can be easily affixed to the existing space element surfaces (such as a wall, door, stairs), and daily objects or home furniture (such as a chair, cabinet, table, sofa, etc.). These 30*30 cm Presence Stickers can actively sense people‚s physical behaviors and body movements in spaces. From the preliminary analysis of observing the 80-year-old elderly subject‚s daily activities, the movement trajectory of the ‚Move-Stop‚ pattern is found. There will be a Touch (T) and Touchless (TL) relationship between the body and the space elements or objects. Furthermore, the touchless, or non-contact, intimate relationship can also be divided into two types: 1. The body that ‚Passes by‚ (P) the spatial elements or objects, and 2. The body that ‚Stays‚ (S) in front of the object and performs activities. These three types of the intimate relationship between bodies and objects, i.e., T, TL-P, and TL-S, were used as the main sensing conditions to develop the Presence Stickers sensor module. We affixed 8 Presence Stickers on 9 objects in six spaces and finally, the life pattern can be analyzed and the sensors provide the customized intelligent application function for the elderly.
keywords	Intuitive Interaction Design, Capacitive Sensor, Daily Object, Touchless, Body Movement, Smart Home, SDG 3
series	CAADRIA
email
last changed	2022/07/22 07:34

_id	caadria2024_513
id	caadria2024_513
authors	Lim, Chor-Kheng
year	2024
title	From Pencil to Pixel: The Evolution of Design Ideation Tools
doi	https://doi.org/10.52842/conf.caadria.2024.3.089
source	Nicole Gardner, Christiane M. Herr, Likai Wang, Hirano Toshiki, Sumbul Ahmad Khan (eds.), ACCELERATED DESIGN - Proceedings of the 29th CAADRIA Conference, Singapore, 20-26 April 2024, Volume 3, pp. 89–98
summary	This study explores the integration of Artificial Intelligence-Generated Content (AIGC) in design processes, focusing on the ideation phase. Utilizing in-depth interviews with experienced designers and an experimental approach with novices, it compares AIGC tools like ChatGPT, Midjourney and Copilot with traditional sketching methods. The findings reveal two distinct operational patterns in AIGC utilization: a subtractive method of refining AI outputs and an additive method of evolving design through AI suggestions. Experienced designers view AIGC as a powerful aid for creative ideation, while novices prefer familiar hand-drawing methods. The study proposes a "Seeing-Instructing-Seeing" model, adapting Schön's reflective practice model, to incorporate the collaborative dynamic between designers and AI, marking a shift from manual to intellectual labor in design ideation. This represents a paradigm shift in design methodologies, suggesting a future of co-creative partnerships between designers and AI tools.
keywords	AIGC, Ideation Design Process, Textual Thinking, Creativity
series	CAADRIA
email
last changed	2024/11/17 22:05

_id	acadia11_396
id	acadia11_396
authors	Lim, Jason
year	2011
title	Let’s Work Together: A Stigmergic Approach to Acoustic Design
doi	https://doi.org/10.52842/conf.acadia.2011.396
source	ACADIA 11: Integration through Computation [Proceedings of the 31st Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA)] [ISBN 978-1-6136-4595-6] Banff (Alberta) 13-16 October, 2011, pp. 396-403
summary	This paper explores the application of agent-based modeling techniques to the domain of acoustics design. Concepts derived from Stigmergy, which is a class of mechanisms that mediate interactions between social organisms, are applied to a custom implementation of a raytracing based acoustics simulator. Rays are given the agency of changing the geometric and material properties of the surfaces they come in contact with during the raytracing phase. The acoustic simulation process is an active one, where the modeled room environment is adapted while being evaluated. Given performance criteria as input, the simulation process is applied to an auditorium example. The auditorium is adapted and its eventual emergent design has improved acoustic performance. It is hoped that this work will demonstrate the potential of coupling multi-agent systems with simulation processes in order to create new design tools.
series	ACADIA
type	work in progress
email
last changed	2022/06/07 07:59

_id	caadria2018_268
id	caadria2018_268
authors	Lim, Joie, Janssen, Patrick and Stouffs, Rudi
year	2018
title	Automated Generation of BIM Models from 2D CAD Drawings
doi	https://doi.org/10.52842/conf.caadria.2018.2.061
source	T. Fukuda, W. Huang, P. Janssen, K. Crolla, S. Alhadidi (eds.), Learning, Adapting and Prototyping - Proceedings of the 23rd CAADRIA Conference - Volume 2, Tsinghua University, Beijing, China, 17-19 May 2018, pp. 61-70
summary	Existing buildings are often lacking BIM models. This paper proposes a method to semi-automate the generation of BIM models from 2D CAD drawings. The method has two parts: the first part, 2D CAD drawing preparation, involves cleaning the drawings to obtain simplified 2D input geometry and the second, 3D BIM model generation, involves generating and extracting parameters to generate 3D BIM components. This research focuses on the semi-automation of the second part. The the model is generated storey by storey, with each building element type being processed. A demonstration was carried out for a case-study building. The main modelling strategies used by the method are described and key challenges are discussed.
keywords	BIM; CAD drawings; conversion; generation; Grasshopper
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	ijac20086403
id	ijac20086403
authors	Lim, Sungwoo; Prats, Miquel; Jowers, Iestyn; Chase, Scott; Garner, Steve; McKay, Alison
year	2008
title	Shape Exploration in Design: Formalising and Supporting a Transformational Process
source	International Journal of Architectural Computing vol. 6 - no. 4, 415-433
summary	The process of sketching can support the sort of transformational thinking that is seen as essential for the interpretation and reinterpretation of ideas in innovative design. Such transformational thinking, however, is not yet well supported by computer-aided design systems. In this paper, outcomes of experimental investigations into the mechanics of sketching are described, in particular those employed by practicing architects and industrial designers as they responded to a series of conceptual design tasks. Analyses of the experimental data suggest that the interactions of designers with their sketches can be formalised according to a finite number of generalised shape rules. A set of shape rules, formalising the reinterpretation and transformations of shapes, e.g. through deformation or restructuring, is presented. These rules are suggestive of the manipulations that need to be afforded in computational tools intended to support designers in design exploration. Accordingly, the results of the experimental investigations informed the development of a prototype shape synthesis system, and a discussion is presented in which the future requirements of such systems are explored.
series	journal
last changed	2009/03/03 07:48

_id	ecaade2017_227
id	ecaade2017_227
authors	Lima, Elton C., Vieira, Aline, Mendes, Leticia T. and Griz, Cristiana
year	2017
title	“Houses for everybody” Brazilian competition - An application of shape grammar and space syntax for analyzing low-income housing
doi	https://doi.org/10.52842/conf.ecaade.2017.2.463
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. 463-470
summary	This article focuses on the use of both shape grammar and space syntax as tools to identify and encode the principles and rules behind the design of low-income housing in Brazilian context. The idea is to use such rules as part of a methodology for analyzing quality space in social housing plans and aims to understand to which attributes of contemporary society redefine certain patterns of familial social conduct, particularly their ways of living and how these attributes impact housing spatial patterns.king this paragraph.
keywords	shape grammar; space syntax; design methodology
series	eCAADe
email
last changed	2022/06/07 07:59

_id	ijac201614204
id	ijac201614204
authors	Lima, Fernando T; Jose R Kos and Rodrigo C Paraizo
year	2016
title	Algorithmic approach toward Transit-Oriented Development neighborhoods: (Para)metric tools for evaluating and proposing rapid transit-based districts
source	International Journal of Architectural Computing vol. 14 - no. 2, 131-146
summary	This article focuses on the use of computational tools to provide dynamic assessment and optimized arrangements while planning and discussing interventions in urban areas. The objective is to address the use of algorithmic systems for generating and evaluating urban morphologies guided by Transit-Oriented Development principles. Transit- Oriented Development is an urban development model that considers geometric and measurable parameters for designing sustainable cities. It advocates compact mixed-use neighborhoods within walking distance to a variety of transportation options and amenities, seeking to result in optimized infrastructure provision and energy-efficient low- carbon districts. This article presents algorithmic experiments for the optimization of a rapid transit district, through its urban morphology and services’ location, providing an accurate Transit-Oriented Development modeling. The main findings of this study highlight that the combination of Transit-Oriented Development and algorithmic–parametric tools has the potential to significantly contribute to a process of responsible planning and, ultimately, to mitigate global warming.
keywords	Transit Oriented Development, Optimization, Computational design, Urban planning
series	journal
last changed	2016/06/13 08:34

_id	caadria2021_055
id	caadria2021_055
authors	Lima, Fernando, Brown, Nathan and Duarte, JosÃ©
year	2021
title	Urban Design Optimization: Generative Approaches towards Urban Fabrics with Improved Transit Accessibility and Walkability - generative approaches towards urban fabrics with improved transit accessibility and walkability
doi	https://doi.org/10.52842/conf.caadria.2021.2.719
source	A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 2, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 719-728
summary	This paper investigates computational optimization techniques at the urban design scale, aiming to improve the performance of urban fabric layouts according to predefined evaluation metrics. To this end, this work addresses the use of optimization tools in urban design by comparing various optimization algorithms for generating urban fabrics with improved walkability and by analyzing the outcomes of different urban design rules. These rules formulate orthogonal and non-orthogonal grids from the perspective of transit accessibility (TA), thereby minimizing automobile usage and improving the walkability of neighborhoods. Transit accessibility is also evaluated alongside estimated infrastructure cost to verify the suitability of applying optimization in urban design. Our results suggest that the RBFOpt algorithm performs best for generating urban fabrics according to our quantitative design objectives; more flexible and complex grids in terms of shape and dimensions tend to deliver greater TA than rectangular and uniform-oriented grids; different block patterns can lead to solutions more directed at TA or to infrastructure cost, outlining a trade-off; and multicriteria optimization helped in identifying designs that balanced transit accessibility and infrastructure cost.
keywords	Urban design ; Optimization; Transit accessibility; Walkability
series	CAADRIA
email
last changed	2022/06/07 07:59

_id	ecaade2016_032
id	ecaade2016_032
authors	Lima, Fernando, Montenegro, Nuno, Beir?o, José Nuno and Kos, Jose
year	2016
title	Computational Approach for the Assessment of Transit Oriented Development Principles - A multivariate optimization method for urban planning
doi	https://doi.org/10.52842/conf.ecaade.2016.2.031
source	Herneoja, Aulikki; Toni Österlund and Piia Markkanen (eds.), Complexity & Simplicity - Proceedings of the 34th eCAADe Conference - Volume 2, University of Oulu, Oulu, Finland, 22-26 August 2016, pp. 31-40
summary	This paper presents a computational approach to provide dynamic assessment and optimization of principles derived from Transit Oriented Development (TOD) - an urban development model that advocates compact, walkable, and mixed-use neighborhoods, centered around transport stations. In spite of being increasingly promoted in several cities of the world, TOD lacks an approach that addresses multivariate data for optimization of its principles. In this paper, we propose a methodology backed by an algorithmic-parametric CAD environment, applied to a neighborhood unit in a case study. The objective is the analysis and improvement of TOD relevant and measurable features (transit accessibility, walkability and diversity) in order to optimize neighborhoods' features. The ultimate goal is to facilitate the management of solutions in TOD planning processes, supported by a principle-index-tool approach triad.
wos	WOS:000402064400002
keywords	Transit Oriented Development; Multi-objective optimization; Computational urban planning;
series	eCAADe
email
last changed	2022/06/07 07:59

_id	ecaadesigradi2019_084
id	ecaadesigradi2019_084
authors	Lima, Fernando, Vallone, Luiza, Costa, Carlos Frederico and Rosa, Ashiley
year	2019
title	(Para)metric Evaluation of Walkability, Diversity and Density in Low-income Neighborhoods - Using the CityMetrics toolbox
doi	https://doi.org/10.52842/conf.ecaade.2019.3.257
source	Sousa, JP, Xavier, JP and Castro Henriques, G (eds.), Architecture in the Age of the 4th Industrial Revolution - Proceedings of the 37th eCAADe and 23rd SIGraDi Conference - Volume 3, University of Porto, Porto, Portugal, 11-13 September 2019, pp. 257-266
summary	This paper describes an implementation of the CityMetrics toolbox, in order to provide a dynamic assessment of metrics related to walkability, diversity and density in remote and low-income urban areas. The applied methodology was used in two remote neighborhoods of Juiz de Fora, which is a Brazilian city, in a case study. The objective was to identify and to evaluate a set of weaknesses in the addressed areas and to propose some improvements in the neighborhoods´ arrangements. The ultimate goal is to contribute to a better understanding of urban problems according to walkability, diversity and density, as well as to contribute to the discussion on the design and implementation of low-income real estate developments, facilitating the management of solutions in urban planning processes in this context.
keywords	Urban analysis; Low-income urban areas; CityMetrics; Walkability; Diversity; Density
series	eCAADeSIGraDi
email
last changed	2022/06/07 07:59

_id	cf2005_2_37_117
id	cf2005_2_37_117
authors	LIN Chieh-Yen and CHIU Mao-Lin
year	2005
title	The Concept Space Explorer
source	Learning from the Past a Foundation for the Future [Special publication of papers presented at the CAAD futures 2005 conference held at the Vienna University of Technology / ISBN 3-85437-276-0], Vienna (Austria) 20-22 June 2005, pp. 139-148
summary	Design is often initiated by some ideas or concepts to form the design process, while design cases provide the impetus for design inspiration and conception. This paper is aimed at establishing a knowledge retrieval mechanism based on design concepts and their semantic relations. This research is based on a case library (CBA) implemented on the web as a repository of house cases and a learning environment for case-based design. The implementation and discussion is presented.
keywords	design knowledge, semantic web, ontology, concept space, case library
series	CAAD Futures
email
last changed	2005/05/05 07:06

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