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	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	acadia03_051
id	acadia03_051
authors	Lim, Chor-Kheng
year	2003
title	G Pen: An Intelligent Designer’s Playmate
doi	https://doi.org/10.52842/conf.acadia.2003.403
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. 403-409
summary	In the field of design the pen-based system is a newly developed computer interface that provides the designer with the convenience of a pen in freehand sketches. But these pen-based systems only focus on an interface familiar to the designers and the application of the hardware and software that go with it, treating the pen only as a mouse-like input device. As pen and pad are devices for the pen-based system, the hope is that they can be endowed with more intelligent characteristics to let them interact with designer’s gestures and become a creative source for the designers, while simultaneously preventing the design fixation encountered by designers during design process. This research utilizes the unintentional hand gestures made by designers, such as the designer’s grip of the pen or movement involved in playing with the pen, putting it down, knocking it, twisting it or shaking it, during the thinking process or when running into a design fixation. From the interaction between the pen and the pad, certain actions may be generated to stimulate the designer’s thinking process. This research uses a neural network as the main learning mechanism for the eventual development of a prototype of a pen-based drawing system that provides timely visual stimulation: a G Pen system.
series	ACADIA
email
last changed	2022/06/07 07:52

_id	ecaade03_615_54_kheng
id	ecaade03_615_54_kheng
authors	Lim, Chor-Kheng
year	2003
title	Is a pen-based system just another pen or more than a pen?
doi	https://doi.org/10.52842/conf.ecaade.2003.615
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 615-622
summary	Freehand sketch is the most critical stage in the design process. The importance of the freehand sketch is in its ability to freely represent various projections of ambiguous drawing using a convenience tool, pen-and-paper. Recently, pen-based system which developed attempted to use pen as an input device, allowing sketches to be freely drawn on computers. However, as far as the various drawing projections, such as diagram, symbol, plan, elevation, section, perspective, etc., how are they interrelated to a designer’s cognitive behavior? Different media have different abilities to represent projections. What’s the difference of design cognitive behavior between conventional pen-and paper and pen-based system in view of both using a pen as a design medium? This research proceeds a think-aloud protocol analysis to present an analysis and discussion. Research results show that there is a relationship of gradual embodiment, mutually complementary, going from a whole to being dissected into sections between the different projections. Moreover, pen-based system is more than a pen, it allows designer to inspect a 3-D view during the sketching stage. This gives the designer more opportunities during the sketching stage to conduct the design thinking process based on the ambiguous 2-D projections and the more concrete 3-D images, as well as more opportunities for visual feedback
series	eCAADe
email
last changed	2022/06/07 07:59

_id	acadia03_049
id	acadia03_049
authors	Lim, Chor-Kheng
year	2003
title	An Insight into the Freedom of Using a Pen: Pen-based System and Pen-and-paper
doi	https://doi.org/10.52842/conf.acadia.2003.385
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. 385-393
summary	In earlier researches on freehand sketching, the cognitive behavior of designers was studied. In recent years, some researchers began to look into this area from the design media aspect. The pen-based system, developed by Gross, Landay and other researchers, used the pen as an input device, allowing sketches to be freely drawn in a computer environment. The importance of the freehand sketch lies in its ability to freely represent various drawing projections using ambiguous sketches. However, as for the various drawing projections, such as diagrams, symbols, plans, elevations, sections, perspectives, etc., how are they interrelated to a designer’s thinking process and the cognitive behavior? Different media have different abilities to represent different projections. Would they affect the designer’s design thinking as well? Targeting different media, i.e., conventional freehand sketches vs. the computer pen-based system, this research uses case studies and think-aloud protocol analysis to present an analysis and discussion. Research results show that there is a relationship of gradual embodiment that is mutually complementary, going from a whole perspective to being the dissected into sections between the different projections. In addition, these projections restrict the designer’s various design thinking processes, while the use of different media may somewhat change the actual design thinking of the designer
series	ACADIA
email
last changed	2022/06/07 07:52

_id	sigradi2010_22
id	sigradi2010_22
authors	Lim, Chor-Kheng
year	2010
title	A Teaching Framework of an “E - basic Design Studio”
source	SIGraDi 2010_Proceedings of the 14th Congress of the Iberoamerican Society of Digital Graphics, pp. Bogotá, Colombia, November 17-19, 2010, pp. 22-25
summary	The objective of this research is to illustrate the teaching of CAD/CAM media in basic design studios for 1st and 2nd year undergraduate students. The research consequently establishes a framework for an “e - basic design studio” based on design studio observations and analysis of academic literature, which include the new thoughts on tectonics and the operation of traditional 2D/3D design media and CAD/CAM digital tools.
keywords	design education, basic design studio, CAD/CAM media, digital thinking.
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	ecaade2010_113
id	ecaade2010_113
authors	Lim, Chor-Kheng
year	2010
title	A Preliminary Study for a Teaching Framework that Incorporates CAD/CAM Media into the Basic Design Studio
doi	https://doi.org/10.52842/conf.ecaade.2010.041
source	FUTURE CITIES [28th eCAADe Conference Proceedings / ISBN 978-0-9541183-9-6] ETH Zurich (Switzerland) 15-18 September 2010, pp.41-50
summary	The objective of this research is to apply the teaching of CAD/ CAM media to basic design studios for 1~2 year undergraduate students. The research consequently concludes a framework of “e-basic design studio” based on literature analysis and design studio observations, which including the new tectonics thinking and the operation of traditional 2D/3D design media and CAD/CAM digital tools.
wos	WOS:000340629400003
keywords	Design education; Basic design studio; CAD/CAM design media; Digital thinking
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ascaad2010_051
id	ascaad2010_051
authors	Lim, Chor-Kheng
year	2010
title	Towards a Framework for CAD/CAM Design and Construction Process in Freeform Architecture: A Case Study
source	CAAD - Cities - Sustainability [5th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2010 / ISBN 978-1-907349-02-7], Fez (Morocco), 19-21 October 2010, pp. 51-64
summary	The objective of this research is to apply the teaching of CAD/CAM media to basic design studios for 1~2 year undergraduate students. The research concludes a framework of “e-basic design studio” based on literature analysis and design studio observations, which including the new tectonics thinking and the operation of traditional 2D/3D design media and CAD/CAM digital tools.
series	ASCAAD
email
last changed	2011/03/01 07:36

_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	caadria2021_033
id	caadria2021_033
authors	Lim, Chor-Kheng
year	2021
title	Towards a framework for emotional tactile interaction design
doi	https://doi.org/10.52842/conf.caadria.2021.2.335
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. 335-344
summary	This study aims to explore the possibility of maintaining intuitive behavior patterns and the most natural relationship coming from physical touch between human and object as interaction behaviors in interaction designs. Such an interaction will convey affection while providing brand new applications and innovative experiences offered by digital technology. Interactive behavior is natural, but the experience of affection is novel is the core idea of the interaction design in this study. The study aims to use a familiar artifact in daily life as the main carrier and embed technology in them and activate them, enabling them with sensitive sensing ability. With such an ability, the interaction between human and objects is thus sensed in a pattern of touch, which itself is affective and interactive. Interactions at the proper time can be provided as feedback, allowing users to experience emotional interaction. Through the analysis of the authors six interaction design projects and experiments over 10 years, the design process and framework for emotional tactile interaction design in using a familiar artifact is proposed.
keywords	Tactile; Interaction design; Intuitive behavior; Familiar artifact
series	CAADRIA
email
last changed	2022/06/07 07:59

_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	caadria2023_406
id	caadria2023_406
authors	Lim, Chor-Kheng
year	2023
title	Gesture Modeling – In Between Nature and Control
doi	https://doi.org/10.52842/conf.caadria.2023.1.189
source	Immanuel Koh, Dagmar Reinhardt, Mohammed Makki, Mona Khakhar, Nic Bao (eds.), HUMAN-CENTRIC - Proceedings of the 28th CAADRIA Conference, Ahmedabad, 18-24 March 2023, pp. 189–198
summary	This research develops a robotic arm-controlled wax material fluidity shape/form-making system that combines AI image recognition and remote control capabilities. AI image recognition is used to capture the designer's hand gestures or movements as an intuitive input method for controlling shape forming. It gives the designer active control of the desired model shape through the temperature, rotation, and movement controls in the process of phase change of wax materials. The system has the additional advantage of remote control, allowing designers to create wax models remotely through intuitive gesture-controlled interactions. This advantage will become a new method of the digital co-creation process.
keywords	Form-finding, Gesture Modeling, Wax, Phase Change Material, Robotic-arm Controlled
series	CAADRIA
email
last changed	2023/06/15 23:14

_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	caadria2014_173
id	caadria2014_173
authors	Lim, Jason; Ammar Mirjan, Fabio Gramazio and Matthias Kohler
year	2014
title	Robotic Metal Aggregations
doi	https://doi.org/10.52842/conf.caadria.2014.159
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. 159–168
summary	The recent convergence of computational design and digital fabrication has made new forms of architectural materialization possible. A workshop conducted at the Royal Melbourne Institute of Technology investigated how differentiated lightweight metal structures may be designed and fabricated under these new conditions. The workshop aim was to complete three such structures; each one is aggregated from aluminum profiles that are robotically assembled according to computationally driven geometric logics. The key challenge was to enable participants, assumed to lack programming and robotic fabrication experience, to design and construct their structures within imposed time constraints. This paper describes the subsequent development of accessible computational design tools and a robust robotic fabrication method for the workshop, and highlights the key decisions taken with their implementation. The workshop results are discussed and the design tools evaluated with respect to them. The paper concludes by recommending an approach to developing computational design tools which emphasizes the importance of usability and integration with the fabrication process.
keywords	Robotic fabrication; computational design; visual programming; lightweight structures
series	CAADRIA
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	sigradi2017_062
id	sigradi2017_062
authors	Lima da Silva, Juliano; Andréa Quadrado Mussi, Lauro André Ribeiro, Thaísa Leal da Silva
year	2017
title	Programação em plataforma BIM e a Norma de Desempenho Brasileira: Desenvolvimento de uma aplicação para estimativa de performance acústica em projetos arquitetônicos [BIM platform programming and Brazilian Performance Standard: Development of an application to estimate acoustic performance in architectural design]
source	SIGraDi 2017 [Proceedings of the 21th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-227-439-5] Chile, Concepción 22 - 24 November 2017, pp.423-428
summary	The Brazilian Performance Standard (NBR 15.575/2013 – Housing Buildings – Performance) is changing the design process of residential buildings, imposing new acoustic performance criteria. In this Context, the present paper proposes the programming of a Revit plug-in for verifying sound insulation of walls between environments, collecting information of the building’s model from a parameter database, calculating values of the elements’ sound reduction index and allowing to ponder constructive systems’ performance. The application aims to amplify productivity of designers and to provide greater control over technological solutions, assisting in the compliance with performance criteria.
series	SIGRADI
email
last changed	2021/03/28 19:58

_id	sigradi2018_1444
id	sigradi2018_1444
authors	Lima da Silva, Juliano; Quadrado Mussi, Andréa; Leal da Silva, Thaísa; Zardo, Paola
year	2018
title	Designers of the XXI century: BIM software programming and the development of new competencies
source	SIGraDi 2018 [Proceedings of the 22nd Conference of the Iberoamerican Society of Digital Graphics - ISSN: 2318-6968] Brazil, São Carlos 7 - 9 November 2018, pp. 538-545
summary	This paper presents the scenario of programming use by architects and engineers by creation of their own unique tools. It aims to emulate and understand BIM software customization phenomenon by development of plug-ins. Design Science Research was used to direct the construction of artifacts for specific practical problems. Results are presented by development of Revit plug-ins to meet Brazilian Performance Standard criteria in areas of acoustic and luminous performance. It is concluded that scripting enables the designer to tailor processes to their own particularities, possibly becoming a high-impact skill in the future, with importance regarding their independence and versatility.
keywords	BIM; Programming; Design science research; Dynamo; Performance Standard
series	SIGRADI
email
last changed	2021/03/28 19:58

_id	sigradi2021_61
id	sigradi2021_61
authors	Lima Saraiva Junior, Sergio and Ribeiro Carvalho, Diogo
year	2021
title	Digital Creativity: Pedagogical Strategies for Design Teaching
source	Gomez, P and Braida, F (eds.), Designing Possibilities - Proceedings of the XXV International Conference of the Ibero-American Society of Digital Graphics (SIGraDi 2021), Online, 8 - 12 November 2021, pp. 401–419
summary	This paper presents a discussion about design pedagogy strategies focused on students’ processes rather than on their architectural objects. The hypothesis here is that critical and creative autonomy of students can be developed by the teaching of design thinking simultaneously with operative digital tools within design disciplines. An experiment was made in an introductory design discipline in a private Brazilian Architecture School and results show how students’ skills and knowledge about design grow faster when a digital creative culture is fostered within the design studio.
keywords	Pedagogia de projeto a distância, Design thinking, Criatividade, Ferramentas digitais, Cultura criativa digital.
series	SIGraDi
email
last changed	2022/05/23 12:10

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