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	caadria2023_62
id	caadria2023_62
authors	Huang, Shuyi, Xu, Weiguo and Yin, Yudong
year	2023
title	Improving the Overhang of 3D-printed Concrete Shells by Wrinkle Structures
doi	https://doi.org/10.52842/conf.caadria.2023.2.301
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. 301–310
summary	The labour shortage is impacting the construction industry globally, and 3D concrete printing (3DCP) technology is considered a solution for such an issue by using robots instead of manpower in building construction. However, due to the unstable mechanical properties of the fresh-state concrete, current 3DCP building forms exclude a massive number of options, one of them being the overhang shape. Therefore, this paper introduces bionic wrinkles to improve the overhang of 3DCP shell prototypes and demonstrates the feasibility of this idea through three groups of buckling simulations. This study proves that surface wrinkles can improve the in-process mechanical properties as well as the overhang capacity of shell structures. In the best scenario, the original design which only reached 30° overhang can be promoted to 77.5°. Besides, the applications of all wrinkle types are robust.
keywords	3D concrete printing, bio-designs, overhang structure, self-supporting printing, fresh-state concrete, surface wrinkle
series	CAADRIA
email
last changed	2023/06/15 23:14

_id	caadria2011_071
id	caadria2011_071
authors	Huang, Weixin; Weiguo Xu and Tao Wang
year	2011
title	Structural form generation using interactive genetic algorithm
doi	https://doi.org/10.52842/conf.caadria.2011.751
source	Proceedings of the 16th International Conference on Computer Aided Architectural Design Research in Asia / The University of Newcastle, Australia 27-29 April 2011, pp. 751-760
summary	Structural form design could be considered as a bi-objective problem which should satisfy both the efficiency criterion of structural engineering and the aesthetic criteria of architects. This research tries to introduce Interactive Genetic Algorithm (IGA) in the problem of structural form design. It combines the structural analysis performed by computer and aesthetic evaluation by architects into a bi-objective IGA process, in order to generate structural forms which are preferred by the architects and at the same time structurally optimal. In this research, the structure generated consists of two kinds of members, truss and beam. Generation and evolution of structure is based on a triangular element composed of several members. Through experiment of the IGA structural form design system, it is found the structure forms are optimized as the evolutionary process proceeds, and the aesthetic preference of architect is also transferred from generation to generation. It is also revealed that the two criteria have mutual restrictions, which resulted in compromised results.
keywords	Bi-objective optimization; structural form; interactive genetic algorithm; subjective evaluation
series	CAADRIA
email
last changed	2022/06/07 07:49

_id	1aa5
authors	Huangb, X., Gub, P. and Zernickea, R.
year	1996
title	Localization and comparison of two free-form surfaces
source	Computer-Aided Design, Vol. 28 (12) (1996) pp. 1017-1022
summary	Comparison of two free-form surfaces based on discrete data points is of paramount importance for reverse engineering. It can be used to assess the accuracy of the reconstructed surfaces and to quantify thedifference between two such surfaces. The entire process involves three main steps: data acquisition, 3D feature localization and quantitative comparison. This paper presents models and algorithms for 3D featurelocalization and quantitative comparison. Complex free-form surfaces are represented by bicubic parametric spline surfaces using discrete points. A simple yet effective pseudoinverse algorithm was developed andimplemented for localization. It consists of two iterative operations, namely, constructing a pseudo transformation matrix and point matching. A computing algorithm was developed to compare two such surfacesusing optimization techniques. Since this approach does not involve solving non-linear equations for the parameters of positions and orientations, it is fast and robust. The algorithm was implemented and testedwith several examples. It is effective and can be used in industry for sculptured surface comparison.
keywords	Free-Form Sculptured Surface, Localization, Point Matching, Surface Comparison
series	journal paper
last changed	2003/05/15 21:33

_id	b151
authors	Hubbell, Jeremy and Boardman, Ted
year	2000
title	Inside 3D Studio VIZ 3
source	New Riders
summary	Taking what you know about design, form, and composition in the real world and translating it into the digital realm can be a significant challenge. If you're looking to make the most of 3D Studio VIZ, this book is the perfect companion. The concepts and tutorials contained within are proven in the field: they address specific issues raised in 3D Studio VIZ courses throughout the country. Inside 3D Studio VIZ 3 explains VIZ like no other learning resource. The projects- and tutorials-based approach takes you beyond tool-related issues and urges you to think "what if?"
series	other
last changed	2003/02/26 18:58

_id	cf2005_2_62_18
id	cf2005_2_62_18
authors	HUBERS Hans
year	2005
title	Parametric Design in Protospace 1.1
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. 255-264
summary	After a history of CAAD in the Netherlands, the author describes the CAVE-like facility that is being set up to support collaborative design. The first prototype, Protospace 1.1 has been tested. Protospace is a project of the Hyperbody Research Group, directed by Prof. Kas Oosterhuis. The state of the art of parametric design and some helpful tools to speed-up the design process are discussed. 3D multiplayer game software Virtools is used to develop synchronic and a-synchronic, local and inter-local collaboration.
keywords	3D modelling, collaborative design, design methodology, virtual design studio, parametric design
series	CAAD Futures
email
last changed	2005/05/05 07:06

_id	sigradi2014_045
id	sigradi2014_045
authors	Hudson, Roland
year	2014
title	Knowledge Based Strategies for Parametric Design in Architecture
source	SIGraDi 2014 [Proceedings of the 18th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-9974-99-655-7] Uruguay- Montevideo 12,13,14 November 2014, pp. 77-81
summary	Design professionals in the construction industry widely use the term “parametric”. Despite this there is a paucity of applied guidelines for developing parametric models. It is possible to attend workshops and learn the mechanics of a specific applications and access online repositories of ‘design patterns’, but the cognitive process of application in practice has received little recent attention. Analysis and experience of practice indicates that acquisition of new knowledge and capture of existing knowledge are the basis for all parametric tasks. This paper exposes a deeper understanding of the role of the parametric designer and proposes an applied strategic framework.
keywords	Parametric design; Design strategies; Computational thinking
series	SIGRADI
email
last changed	2016/03/10 09:53

_id	a27c
authors	Hue, F., Serrano, G. and Bolaño, J.A.
year	2000
title	Oeresund Bridge. Temperature and cracking control of the deck slab concrete at early ages
source	Automation in Construction 9 (5-6) (2000) pp. 437-445
summary	High performance features are required of the concrete for the deck slab of the bridge over Öresund Straight between Denmark and Sweden and, among them, great durability. To guarantee this, it is necessary to assure, in advance, and control during the construction of the deck slabs, that the maximum temperatures and the traction stresses in the deck slab will not be greater than the allowable values, and to control these factors during the construction process. Before beginning construction, the deck slab was calculated using a program of finite elements that considers the heat generated, the shrinkage and creep of the concrete and the ambient conditions. To control the temperature during construction, temperature sensors are installed in various sections of each of the 49 deck spans and the temperatures produced during the first days of hardening are recorded on a computer. The temperatures of the components are also measured in order to estimate the temperature of the fresh concrete.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	ecaade2021_294
id	ecaade2021_294
authors	Hui, Vincent, Estrina, Tatiana and Huang, Alvin
year	2021
title	A New Player Has Entered the Game - Gaming tropes as a harbinger of architectural praxis
doi	https://doi.org/10.52842/conf.ecaade.2021.2.123
source	Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 2, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 123-134
summary	Video games as a medium for entertainment have evolved overtime to become impactful and relevant in current culture, industry, and education. Although architecture is a cultural commodity that has been present since the dawn of civilization, within the span of less than 50 years, video games have had an incredible impact on architectural praxis. This paper posits a dyadic relationship between computer games and architecture, exploring the influences video game design attributes have had on nascent designers within the industry. This paper documents a case study examining architectural students' studio projects from Canada's largest architecture program, identifying the influences of video games that emerge within their designs. The paper discusses the effect video games have made on architectural education through passively impacting current pedagogical practice, design tendencies, and inevitably molding the architects of the future.
keywords	Architecture; Emergent Design Trends; Education; Gaming; Digital Proxy; Experiential Learning
series	eCAADe
email
last changed	2022/06/07 07:50

_id	ecaade2013_267
id	ecaade2013_267
authors	Hulin, Jaroslav and Pavlicek, Jiri
year	2013
title	Algorithmic Engineering in Public Space
doi	https://doi.org/10.52842/conf.ecaade.2013.2.255
source	Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 2, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 255-259
summary	The paper reflects on a relationship between an algorithmic and a standard (intuitive) approach to design of public space. A realized project of a plaza renovation in Czech town Vsetin is described as a study case. The paper offers an overview of benefits and drawbacks of the algorithmic approach in the described study case and it outlines more general conclusions.
wos	WOS:000340643600025
keywords	Algorithm; public space; circle packing; optimization; pavement.
series	eCAADe
email
last changed	2022/06/07 07:50

_id	ddssar9616
id	ddssar9616
authors	Hunt, John
year	1996
title	Establishing design directions for complex architectural projects: a decision support strategy
source	Timmermans, Harry (Ed.), Third Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings (Spa, Belgium), August 18-21, 1996
summary	The paper seeks to identify characteristics of the design decision-making strategy implicit in the first placed design submissions for three significant architectural competitions: the Sydney Opera House competition, and two recent design competitions for university buildings in New Zealand. Cohn Rowe's (1982) characterisation of the design process is adopted as a basis for the analysis of these case studies. Rowe's fertile analogy between design and (criminal) detection is first outlined, then brought to bear on the case studies. By means of a comparison between the successful and selected unsuccessful design submissions in each case, aspects of Rowe's characterisation of the design process are confirmed. On the basis of this analysis several common features of the competition-winning submissions, and their implicit decision-making processes, are identified. The first of these features relates to establishing project or programmatic requirements and the prioritizing of these. The second concerns the role of design parameters or requirements that appear as conflicting or contradictory, in the development of a design direction and in innovative design outcomes. The third concerns the process of simultaneous consideration given by the designer to both project parameters or requirements, and to design solution possibilities - a process described by Rowe as "dialectical interanimation".
series	DDSS
last changed	2003/08/07 16:36

_id	a4cc
authors	Hunter, Gregory M. and Steiglitz, Kenneth
year	1979
title	Operations on Images Using Quad Trees
source	IEEE Transactions on Pattern Analysis and Machine Intelligence. April, 1979. vol. PAMI-1: pp. 145-153 : ill. includes bibliography
summary	A quad tree for representing a picture is a tree in which successively deeper levels represent successively finer subdivisions of picture area. An algorithm is given for superposing N quad trees in time proportional to the total number of nodes in the trees. Warnock-type algorithms are then presented for building the quad tree for the picture of the boundary of a polygon, and for coloring the interior of such a polygon. These algorithms take O(v + p + q) time, where v is the number of polygon vertices, p is the polygon perimeter, and q is a resolution parameter. When the resolution q is fixed, these algorithms are asymptotically optimal
keywords	GIS, mapping, CAD, layout, pattern recognition, polyhedra, quadtree, planning, image processing, computer graphics
series	CADline
last changed	2003/06/02 13:58

_id	ecaade2021_103
id	ecaade2021_103
authors	Hussein, Hussein E. M., Agkathidis, Asterios and Kronenburg, Robert
year	2021
title	Towards a Free-form Transformable Structure - A critical review for the attempts of developing reconfigurable structures that can deliver variable free-form geometries
doi	https://doi.org/10.52842/conf.ecaade.2021.2.381
source	Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 2, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 381-390
summary	In continuation of our previous research (Hussein, et al., 2017), this paper examines the kinetic transformable spatial-bar structures that can alter their forms from any free-form geometry to another, which can be named as Free-form transformable structures (FFTS). Since 1994, some precedents have been proposed FFTS for many applications such as controlling solar gain, providing interactive kinetic forms, and control the users' movement within architectural/urban spaces. This research includes a comparative analysis and a critical review of eight FFTS precedents, which revealed some design and technical considerations, issues, and design and evaluation challenges due to the FFTS ability to deliver infinite unpredictable form variations. Additionally, this research presents our novel algorithmic framework to design and evaluate the infinite form variations of FFTS and an actuated prototype that achieved the required movement. The findings of this study revealed some significant design and technical challenges and limitations that require further research work.
keywords	Kinetic transformable structures; finite element analysis; form-finding; deployable structures; Grasshopper 3D; Karamba 3D
series	eCAADe
email
last changed	2022/06/07 07:50

_id	bffb
authors	Hutson, Andrew
year	2000
title	The Medium is the Message. The Results of the Early Immersion of Architectural Students into Computer Modeling
doi	https://doi.org/10.52842/conf.caadria.2000.191
source	CAADRIA 2000 [Proceedings of the Fifth Conference on Computer Aided Architectural Design Research in Asia / ISBN 981-04-2491-4] Singapore 18-19 May 2000, pp. 191-200
summary	The biggest challenge to students of architecture is the development of the visualization skills necessary to facilitate design conceptualization. Our faculty has instituted programs that immerse students in computer modeling at the beginning of their study. The results from these programs raise questions regarding the position and influence of the computer medium in the process of design.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	caadria2017_021
id	caadria2017_021
authors	Hwang, Ji-Hyoun and Lee, Hyunsoo
year	2017
title	3D Visual Simulation and Numerical Measurement of Privacy in Traditional Korean Palace
doi	https://doi.org/10.52842/conf.caadria.2017.355
source	P. Janssen, P. Loh, A. Raonic, M. A. Schnabel (eds.), Protocols, Flows, and Glitches - Proceedings of the 22nd CAADRIA Conference, Xi'an Jiaotong-Liverpool University, Suzhou, China, 5-8 April 2017, pp. 355-363
summary	Traditional Korean architecture provides privacy through a proper balance of openness and enclosure through courtyard gardens. However, it is difficult to analyse privacy quantitatively in a three-dimensional space. The analysis of visual privacy is a significant issue in resolving conflicts and enhancing comfort. This paper develops a computational algorithm for simulating and measuring privacy on the concept of prospect and refuge: a design strategy for psychological wellbeing. In order to visualize privacy, the prospect area ratio (PAR) and refuge area ratio (RAR) are used in 3D visual simulations. PAR and RAR calculate the area ratio of the hiding space or the visible space in the images collected from the 3D model. In addition, parametric algorithms are proposed to calculate PAR/RAR automatically. Finally, this research demonstrates a case study of Gyeongbokgung, one of the five palace buildings in Korea, to show methods and processes of the quantitative analysis of visual privacy. The outcome of this paper contributes to quantitative confirmation of spatial characteristics that clearly distinguish between public space and private space of Gyeongbokgung. The proposed method also shows great potentials to quickly obtain the numeric value of privacy.
keywords	3D simulation; numerical measurement; traditional Korean palace; privacy
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	9dc7
authors	Hwang, Jie-Eun and Choi, Jin-Won
year	2002
title	SpaceCore: Metadata for Retrieving Spatial Information in Architecture
doi	https://doi.org/10.52842/conf.acadia.2002.197
source	Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 197-215
summary	This research investigates the spatial information retrieval in architecture focused on constructingefficient metadata that is crucial for data retrieval. Generally speaking, metadata is ‘structured dataabout data’ to describe the resources especially in a digital method. In this research, metadata is a sortof data object to be used in searching spatial information, such as describing a raw spatial data objectnot only as attribute data but also as content, structurally and semantically. There are two issues thatmotivate this research; 1) the materialization of the intangible space as a data object, and 2) thecontent-based information retrieval. In the viewpoint of content-based retrieval, we analyze spatialinformation on the apartment unit floor plan common in Korea. Then we extract the metadata items in astructured manner. To manage the items efficiently, we develop a data model for spatial informationaccording to the concept of “Structured Floor Plan”. For exploiting the metadata, this research showsseveral possibilities of query operations to present a set of sample queries about L-D-K(Living room -Dining room – Kitchen). Implementation of the prototype system is divided into three parts: 1) amodeling module, Vitruvis; 2) an indexing module, SpaceCore; and 3) a browsing module.
series	ACADIA
email
last changed	2022/06/07 07:50

_id	caadria2019_404
id	caadria2019_404
authors	Hyejin, Park, Hyeongmo, Gu, Woojun, Lee, Inhan, Kim and Seungyeon, Choo
year	2019
title	A Development of KBIMS-based Building Design Quality Evaluation and Performance Review Interface
doi	https://doi.org/10.52842/conf.caadria.2019.1.747
source	M. Haeusler, M. A. Schnabel, T. Fukuda (eds.), Intelligent & Informed - Proceedings of the 24th CAADRIA Conference - Volume 1, Victoria University of Wellington, Wellington, New Zealand, 15-18 April 2019, pp. 747-756
summary	Recently, The South Korean national government and local governments in Korea are pursuing national R & D tasks that can be used in the design stage to expand the BIM technology to the public environment of the future city, such as the construction of the IT integrated architecture design environment and the convenient construction administrative system environment. Among these R & D researches, various studies are continuing to provide more convenient and accurate architectural services at the licensing stage in order to promote the introduction and practical use of BIM in the Korean construction industry. Typical examples are BIM-based building design quality evaluation and building performance review technology development. Therefore, the goal of this study is to introduce the case of developing the performance review interface according to the regulation and required performance criterion of BIM model using KBIMS and analyze the possibility of evaluating building design quality by applying this to a practical project.
keywords	OpenBIM; Design Automation; Performance Review; Design Quality; Legal Review
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	cf2005_2_14_39
id	cf2005_2_14_39
authors	HYUN-AH Choi and HAN-JONG Jun
year	2005
title	A Design Model Using Mutation Shape Emergence
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. 41-50
summary	The ability to recognize properties and characteristics unforeseen in the early stage of design, namely shape emergence, is considered one of vital aspects of human visual perception in creative thinking. This study aims at developing a design model by using an extended theory of shape emergence, mutation shape emergence which we call. The first part of this paper describes the definition of mutational emergent shapes clearly. In the second part, possibility of discovering mutational emergent shapes will be explored through protocol analysis. On the basis of the results of these efforts, we will examine closely the cognitive mechanism to discover mutational emergent shapes. In the last stage, based on our results we propose a design model for understanding the cognitive process implications for training architects.
keywords	creativity, design process, mutational emergent shapes, design model
series	CAAD Futures
email
last changed	2005/05/05 07:06

_id	937c
authors	I-Kang Li, Andrew
year	2002
title	A prototype interactive simulated shape grammar
doi	https://doi.org/10.52842/conf.ecaade.2002.314
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. 314-317
summary	Existing shape grammar interpreters have implemented some of the distinguishing features of the formalism, notably emergence or rule application under multiple transformations. By contrast, I implement a grammar in which these capabilities either are not required or can be simulated. This frees a user from mechanical issues, allowing him to pay more attention to the process embodied in the grammar.
series	eCAADe
email
last changed	2022/06/07 07:50

_id	ascaad2023_137
id	ascaad2023_137
authors	Ibrahim, Aly; Abdelmohsen, Sherif; Omar, Walid; Ebrahim, Sherif
year	2023
title	Enhancing Hygromorphic Programmable Properties using Natural Local Materials: The Case of Albizia Lebbeck Trees
source	C+++: Computation, Culture, and Context – Proceedings of the 11th International Conference of the Arab Society for Computation in Architecture, Art and Design (ASCAAD), University of Petra, Amman, Jordan [Hybrid Conference] 7-9 November 2023, pp. 209-223.
summary	This paper explores the use of Albizia Lebbeck wood as a hygromorphic programmable material in adaptive architectural building skins. Several studies have investigated the use of hygromorphic behavior in developing adaptive architectural façades. Very few however have attempted to explore and evaluate the use of natural local materials in their specific climatic and cultural context, especially in the Arab World. Multiple experiments and simulations were conducted on Albizia Lebbeck wood samples as a material widely abundant in Egypt. The results demonstrate high potential for bending deformation, for use as a programmable adaptive façade panel. Compared against typical kinetic and static façade prototypes in an office space case study in Alexandria, Egypt, this double skin programmable material was shown to potentially improve performance in interior spaces in terms of light penetration and distribution without causing high levels of illumination or glare, while demonstrating low-cost and eco-friendly benefits for implementation as responsive façade prototypes.
series	ASCAAD
email
last changed	2024/02/13 14:41

_id	ascaad2016_019
id	ascaad2016_019
authors	Ibrahim, Magdy M.
year	2016
title	3D Printed Architecture - A new practical frontier in construction methods
source	Parametricism Vs. Materialism: Evolution of Digital Technologies for Development [8th ASCAAD Conference Proceedings ISBN 978-0-9955691-0-2] London (United Kingdom) 7-8 November 2016, pp. 169-178
summary	It is important to discuss and compare the rationale behind the success of the additive manufacturing technology in particular industries and at a particular scale versus full-scale building construction. The comparison should include structural qualities of the possible used materials, the cost effectiveness of the process, the time factor and its value in the construction process, the mass customization potential of the technology and its effect on building forms. The current state of technology in architecture, despite huge potential, has not produced new architectural forms.
series	ASCAAD
email
last changed	2017/05/25 13:31

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