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	ecaade2024_27
id	ecaade2024_27
authors	Hizmi, Bat-El; Ben-Yosef, Almog; Aidlin, Amit; Sterman, Yoav
year	2024
title	BarBend: Parametric and reversible solid wood bending Through CNC Cutting
doi	https://doi.org/10.52842/conf.ecaade.2024.1.371
source	Kontovourkis, O, Phocas, MC and Wurzer, G (eds.), Data-Driven Intelligence - Proceedings of the 42nd Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2024), Nicosia, 11-13 September 2024, Volume 1, pp. 371–380
summary	Computational and robotic approaches for bending wood include cutting kerfs and slits that generates flexibility in the wood or using external fixtures to keep the wood bent while in tension. In both cases, the bent configuration is maintained using glue or external fixtures, making it challenging to unbend the wood back to its straight configuration. The paper presents a novel method for parametric and reversible solid wood bending inspired by kerfing and Active Bending. The aim is to create a computational method in which, for any curve that consists of arcs and straight lines, a cut pattern is generated that allows the bending of a solid wood beam to match the input curve. The suggested approach is based on splitting an arc into two parts, connected by a thin bar along the grain direction. The bar is elastic and allows for manual bending. While bending, the precise CNC cutting of the arcs forces the wood to take the intended bending shape while maintaining tension. A bowtie inlay locks the bending in place. Once the locking is removed, the wood may be unbent. The research explores the limitation of the suggested method in terms of the possible bent radii and conducts compression tests to evaluate the strength of the bentwood. Two main advantages of the suggested approach are demonstrated. The first is creating curved profiles out of timber wood, which is limited in width. The second advantage is material efficiency when cutting curved profiles from plywood panels. Our computational bending method enables designers to prototype and construct DIY furniture and temporary structures with a simple assembly.
keywords	Robotic fabrication, Wood construction, Wedged Kerfing, Computational design, Timber, efficient packaging
series	eCAADe
email
last changed	2024/11/17 22:05

_id	acadia20_658
id	acadia20_658
authors	Ho, Brian
year	2020
title	Making a New City Image
doi	https://doi.org/10.52842/conf.acadia.2020.1.658
source	ACADIA 2020: Distributed Proximities / Volume I: Technical Papers [Proceedings of the 40th Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 978-0-578-95213-0]. Online and Global. 24-30 October 2020. edited by B. Slocum, V. Ago, S. Doyle, A. Marcus, M. Yablonina, and M. del Campo. 658-667.
summary	This paper explores the application of computer vision and machine learning to streetlevel imagery of cities, reevaluating past theory linking urban form to human perception. This paper further proposes a new method for design based on the resulting model, where a designer can identify areas of a city tied to certain perceptual qualities and generate speculative street scenes optimized for their predicted saliency on labels of human experience. This work extends Kevin Lynch’s Image of the City with deep learning: training an image classification model to recognize Lynch’s five elements of the city image, using Lynch’s original photographs and diagrams of Boston to construct labeled training data alongside new imagery of the same locations. This new city image revitalizes past attempts to quantify the human perception of urban form and improve urban design. A designer can search and map the data set to understand spatial opportunities and predict the quality of imagined designs through a dynamic process of collage, model inference, and adaptation. Within a larger practice of design, this work suggests that the curation of archival records, computer science techniques, and theoretical principles of urbanism might be integrated into a single craft. With a new city image, designers might “see” at the scale of the city, as well as focus on the texture, color, and details of urban life.
series	ACADIA
type	paper
email
last changed	2023/10/22 12:06

_id	ecaade2009_027
id	ecaade2009_027
authors	Ho, HsinYi; Wang, Ming-Hung
year	2009
title	Meta Form as a Parametric Design Language
doi	https://doi.org/10.52842/conf.ecaade.2009.713
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference Proceedings / ISBN 978-0-9541183-8-9] Istanbul (Turkey) 16-19 September 2009, pp. 713-718
summary	This study is about building a conceptual architecture called Meta-form that can perform the acts of parametric design to generate various house forms. The study limits its scope to four genotypes of residential houses in the world. Typological Analysis is employed as a technique of distinguishing the key variables shared by the built forms. The result, with respect to each genotype, there are specific meta-form systems account for the generation of cases of phenotype by assigning different values to each corresponding parameter. With its generative power the meta-form system is evidently a useful tool to assist type-based form productions. As such, the parametric values also acquired the descriptive power of specifying built form characters.
wos	WOS:000334282200086
keywords	Meta form, genotype, phenotype, typological analysis, parametric design
series	eCAADe
email
last changed	2022/06/07 07:50

_id	sigradi2013_327
id	sigradi2013_327
authors	Ho, Miriam
year	2013
title	Fibre Configurations for Moisture Control: A Vernacular Framework
source	SIGraDi 2013 [Proceedings of the 17th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Chile - Valparaíso 20 - 22 November 2013, pp. 410 - 414
summary	This research describes a theoretical framework for making water-sensitive architectural fabrics based on an examination of the subtle moisture controls in vernacular architecture. It explores a workflow for the articulation of environmental forces in material microstructure and how these can be amplified at an architectural scale. The interaction between moisture and material properties is modeled using physics simulations in Processing, offering a method to manipulate fibre configurations for new construction logics. The research is illustrated through parallel explorations in computationally generated fibre configurations and multi-scalar textile prototypes. The research aims to demonstrate the potentials of technology transfer from traditional knowledge to contemporary material manipulations.
keywords	Vernacular architecture; Simulation; Environment; Textiles
series	SIGRADI
email
last changed	2016/03/10 09:53

_id	acadia11_56
id	acadia11_56
authors	Hoberman, Chuck; Schwitter, Craig
year	2011
title	Adaptive Structures: Building for performance and sustainability
doi	https://doi.org/10.52842/conf.acadia.2011.056
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. 56-59
summary	For most architects and engineers, the idea of optimizing a building’s design in relation to its location is so ingrained as to be a reflex. Still, most building professionals have a difficult time making the conceptual and practical leap to the notion of performance-based or “adaptive” buildings. We call these adaptive buildings because they can adapt their shape and function in realtime to environmental changes. This field remains far less developed than other areas of practice, but the logic of adaptive performance — which is time-based, responsive, and dynamic — is compelling. Buildings that continuously attune their configurations in accordance with changing environmental conditions use less energy, offer more occupant comfort, and feature better overall space efficiency than static buildings.
series	ACADIA
type	keynote paper
email
last changed	2022/06/07 07:50

_id	eaea2005_115
id	eaea2005_115
authors	Hoelscher, Christoph and J. Alexander Schmidt
year	2006
title	User needs at the heart of town: Orientation and appraisal in an endoscopic city scale model (script)
source	Motion, E-Motion and Urban Space [Proceedings of the 7th European Architectural Endoscopy Association Conference / ISBN-10: 3-00-019070-8 - ISBN-13: 978-3-00-019070-4], pp. 115-131
summary	In this paper we provide a “work-in-progress” report on on going investigation into the perception of building alternatives at a central urban place. The city-planning task in this case involves the development of several key parcels of real estate, with significant impact on a mediumsized German city’s overall appearance and functionality. The interests of investors wishing to maximize economic utilization are competing with public interests regarding urban planning and urban design as well as development needs. Hence, there is a need for the development of different spatial layouts for the district to help identify reasonable concepts for the use of these key properties and their impact on the visual townscape as well as the functional spatial properties of the city’s open space. Ultimately, clear deed restrictions and guidelines are to be identified for future investors to preserve the cityscape and to improve the quality of the existing public open space but also to enhance downtown’s existing sensible economic equilibrium.
series	EAEA
type	normal paper
email
more	http://info.tuwien.ac.at/eaea
last changed	2008/04/29 20:46

_id	acadia23_v2_242
id	acadia23_v2_242
authors	Hoenerloh, Aileen; Arnardottir, Thora; Bridgens, Ben; Dade-Robertson, Martyn
year	2023
title	Living Morphogenesis: Bacteria-Driven Form Exploration through Aeration Scaffolding
source	ACADIA 2023: Habits of the Anthropocene: Scarcity and Abundance in a Post-Material Economy [Volume 2: Proceedings of the 43rd Annual Conference for the Association for Computer Aided Design in Architecture (ACADIA) ISBN 979-8-9891764-0-3]. Denver. 26-28 October 2023. edited by A. Crawford, N. Diniz, R. Beckett, J. Vanucchi, M. Swackhamer 242-255.
summary	Increasing interest in living materials has pushed scientists and designers to explore the potential of fungi, algae, yeast, and bacteria as part of the fabrication process. The microbially-produced biopolymer, bacterial cellulose (BC), shows great potential as an alternative building material due to its high durability, tensile strength, moisture resistance, and lightweight nature. Current BC fabrication methods primarily involve post-processing the naturally forming flat material after its growth phase. This research investigates an approach into co-designing with cellulose-producing bacteria to explore its morphogenetic tendencies in order to create intricate 3-dimensional forms. This paper looks at a fabrication approach that diverges from conventional BC material production towards form-finding by creating explorative methods that guide BC formation through the control of airflow. We present an experimental workflow with a bacteria and yeast that employs a strategy to identify parameters for guiding the morphological development of BC. To capture the form of the delicate material samples, a multi-step preservation process was developed, providing data on both the external and internal structure of the material. Photographic documentation of the growth process enabled the categorization of bacterial behavior in response to distinct environmental stimuli. Based on these obser- vations, a set of design principles was established to allow us to predict the morphological development of BC growth within a bioreactor. These experiments address a new type of unconventional computational approach to form-finding by studying the native growth mechanism of living bacteria, and offering a new perspective on our design engagement with these processes.
series	ACADIA
type	paper
email
last changed	2024/12/20 09:12

_id	ecaade2007_004
id	ecaade2007_004
authors	Hofer, Michael; Asperl, Andreas
year	2007
title	Geometry in the CAAD Curriculum
doi	https://doi.org/10.52842/conf.ecaade.2007.385
source	Predicting the Future [25th eCAADe Conference Proceedings / ISBN 978-0-9541183-6-5] Frankfurt am Main (Germany) 26-29 September 2007, pp. 385-392
summary	Modern architecture takes advantage of the greatly increasing design possibilities. Yet, architects are not just a new group of CAD users. Scale and construction technologies pose new challenges to engineering and design. We are convinced that those can be met more effectively with a solid understanding of geometry. Thus, an academic CAAD curriculum has to meet these requirements. We introduce our approach taken at TU Vienna and focus on the first-term mandatory course on geometry for architecture.
keywords	Geometry, CAAD curriculum, geometric design
series	eCAADe
email
last changed	2022/06/07 07:50

_id	1955
authors	Hoffmann, C.M. and Vanecek, G.
year	1990
title	Fundamental techniques for geometric and solid modeling
source	Manufacturing and Automation Systems: Techniques and Technologies, no. 48, pp. 347-356
summary	nD skeletons as the discontinuities of the graph of the distance map in (n+1)D space. Cyclographic map of Descriptive Geometry (generates the ruled & developable surface); its discontinuities form the skeleton. Relation with the Hamilton-Jacobi equation. The shocks of this PDE correspond to the skeleton.
series	journal paper
last changed	2003/05/15 21:22

_id	22bd
authors	Hoffmann, C.M., Hopcroft, J.E. and Karasick, M.S.
year	1989
title	Robust Set Operations on Polyhedral Solids
source	IEEE Computer Graphics and Applications. November, 1989. vol. 9: pp. 50-59 : ill. includes bibliography
summary	The paper describes an algorithm for performing regularized Boolean operations on polyhedral solids. Robustness is achieved by adding symbolic reasoning as a supplemental step to resolve possible numerical uncertainty. Additionally, numerical redundancy and numerical computation based on derived quantities are reduced as much as possible. It also discusses the authors' experience with the implementation of the algorithm
keywords	algorithms, polyhedra, solids, representation, computational geometry, geometric modeling, boolean operations
series	CADline
last changed	2003/06/02 14:41

_id	9a6b
authors	Hofmeyer, Herm Combined
year	2000
title	Combined web crippling and bending moment failure of first-generation trapezoidal steel sheeting : experiments, finite element models, mechanical models
source	Eindhoven University of Technology
summary	Cold-formed trapezoidal sheeting of thin steel plate is a very popular product for building construction. It combines low weight and high strength and is economical in use. Current design rules, which predict sheeting failure for an interior support, do not provide sufficient insight into the sheeting behaviour, and can differ up to 40% in their predictions. To develop a new design rule, this thesis presents new experiments in which first-generation sheeting behaviour is studied for practical situations. The experiments show that after ultimate load, three different post-failure modes arise. Mechanical models have been developed for the three post-failure modes. These models can help to explain why a certain post-failure mode occurs. Finite element models were used to simulate the experiments. Studying stress distributions with finite element simulations, it can be seen that there are only two ultimate failure modes at ultimate load. One of these ultimate failure modes is not relevant for practice. A mechanical model has been developed for the other ultimate failure mode. This model performs as well as the current design rules, and it provides insight into the sheeting behaviour.
keywords	Steelstructures; Constructive Design; Thin Walled Beams; Local Buckling; Steel Profiles
series	thesis:PhD
email
last changed	2003/02/12 22:37

_id	caadria2021_438
id	caadria2021_438
authors	Hofmeyer, Herm, De Goede, Thijs and Boonstra, Sjonnie
year	2021
title	Co-evolutionary Spatial-Structural Building Design Optimisation including Facade Openings
doi	https://doi.org/10.52842/conf.caadria.2021.1.431
source	A. Globa, J. van Ameijde, A. Fingrut, N. Kim, T.T.S. Lo (eds.), PROJECTIONS - Proceedings of the 26th CAADRIA Conference - Volume 1, The Chinese University of Hong Kong and Online, Hong Kong, 29 March - 1 April 2021, pp. 431-440
summary	Within co-evolutionary building design simulations, a spatial design can be automatically transformed into a structural design, and its structural performance can lead to modifications of the spatial design, after which a new cycle starts. This paper presents two procedures to include facade openings in these simulations, to allow for future simulations that include lighting. The first procedure reassigns a fixed pattern of facade openings to the spatial design each cycle, whereas the second procedure only assigns a pattern at the start, and modified spaces inherit their openings. For structural peformance, it is concluded that deterministic vertical opening patterns, with a low facade opening ratio, lead to a reduction of the number of stories, and consequently optimise the structural design. Also, it is shown that the first procedure maintains facade opening ratios during simulations, whereas the second procedure leads to decreasing openness, and more unconnected spaces. As such the first procedure is considered for an upcoming project, where spatial-structural-thermal-lighting building optimisation is investigated, including non-rectangular spatial designs.
keywords	Spatial-Structural Optimisation; Co-evolutionary Design; Structural Design; Facade Openings
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	2005_743
id	2005_743
authors	Hofmeyer, Herm, Rutten, Harry and Fijneman, Henk
year	2005
title	Improving Design using Autonomous Spatial and Structural Generators
doi	https://doi.org/10.52842/conf.ecaade.2005.743
source	Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 743-750
summary	During a building design process, a structural designer transforms a spatial design into a structural design and this structural system can be improved by optimisation methods or expert views of other structural designers. The improved structural system allows the architect a new spatial design, which can be transformed or altered again by the architect. This design cycle can be repeated several times and is defined as interaction of spatial and structural design. Case studies are used to demonstrate that this interaction occurs in practice and is needed to improve building quality. This paper presents a program with more or less autonomous spatial and structural generators. Each generator will facilitate one direction in the interaction process. Then using both consecutively leads to a design method that provides interaction between spatial and structural design. For the spatial generator, named “room positioning with structural constraints” a space allocation technique is used including constraints that handle structural boundary conditions. A zone generator based on pattern recognition and shape grammars handle the structural design. A Prolog-2 program was developed to demonstrate the application of the two proposed generators. “Zone generation” is performed per building storey and thus represents a horizontal two-dimensional procedure. Similarly “room positioning with structural constraints” is a planar vertical operation. In future these procedures can be made three-dimensional.
keywords	Spatial Design, Structural Design, Interaction, Case Study, Data Model.
series	eCAADe
email
last changed	2022/06/07 07:50

_id	b086
id	b086
authors	Hofmeyer, Herm
year	1995
title	UNTERSUCHUNG DER PARAMETEREMPFINDLICHKEIT BEI PROBLEMEN DER STRUKTUROPTIMIERUNG
source	Universität Stuttgart, Institut für Baustatik, Prof. Dr.-Ing. E. Ramm, Stuttgart, Germany
summary	Besides the development of benchmarks for structural optimization, this report shows that optimization techniques can be used not only for changing structural elements, but also for changing structural topology and thus potentially whole building designs. This is relevant for computer aided structural design in general and for interaction of spatial and structural design as presented by the author at eCAADe 2005.
keywords	structural optimization; form-finding; structural topology
series	report
type	normal paper
email
last changed	2006/04/21 07:58

_id	ecaade2008_092
id	ecaade2008_092
authors	Hofmeyer, Herm; Kerstens, J.G.M.
year	2008
title	A Bird’s-Eye View of Cyclic Spatial-Structural Transformations, Grammar Based Design, and Structural Optimization
doi	https://doi.org/10.52842/conf.ecaade.2008.483
source	Architecture in Computro [26th eCAADe Conference Proceedings / ISBN 978-0-9541183-7-2] Antwerpen (Belgium) 17-20 September 2008, pp. 483-492
summary	Recently, in the research field of combined architecture and structural design, the idea of a so-called research engine has been developed. During its development, initially the intention was to develop a design-support tool, however, it now becomes clear that it may serve as a general framework for several applications. In this paper the new possibilities for the applications will be presented. As a result, a bird’s-eye view is developed on a set of applications that are often presented separately and without a larger framework in literature. In conclusion, several applications used for CAAD and CASD (Computer Aided Structural Design) can be seen as derivatives of a research engine. The other way round, the research engine can be modified and new applications may result.
keywords	Generative design, Optimisation, Spatial Design, Structural Design, Automated design
series	eCAADe
email
last changed	2022/06/07 07:50

_id	caadria2019_054
id	caadria2019_054
authors	Hofmeyer, HÃ¨rm, Claessens, Dennis, Boonstra, Sjonnie and de Vries, Bauke
year	2019
title	Effects of 3D Zoning of Spatial Designs on the Performance of Structure Systems
doi	https://doi.org/10.52842/conf.caadria.2019.1.205
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. 205-214
summary	A particular application for informed building design concerns the intelligent synthesis of a structure system for a conceptual spatial design. As part of this synthesis, the positioning of structural elements is normally related to the surfaces of the spaces that form the spatial design. It is shown that if surfaces of zones are taken instead, with a zone being a group of complete or possibly incomplete spaces, structural performance of the space-based systems may be Pareto dominated by the zone-based systems. This indicates that zones are a useful concept to improve structural performance. Also, the variety of zoned designs for a single spatial design delivers, together with a single structural grammar, many variants for a structure system.
keywords	Zoning; Structural Grammar; Structure System
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	e38b
authors	Hogben, Gavin
year	2000
title	Digital Video and Architectural Design
doi	https://doi.org/10.52842/conf.ecaade.2000.201
source	Promise and Reality: State of the Art versus State of Practice in Computing for the Design and Planning Process [18th eCAADe Conference Proceedings / ISBN 0-9523687-6-5] Weimar (Germany) 22-24 June 2000, pp. 201-204
summary	This paper examines the potential use of Digital Video as an integral part of the design and execution of construction projects, illustrating a number of digital and narrative techniques through two live DV case-study projects.
keywords	Moving Image, Construction, Design Methodologies, Narrativity, Lifecycle Design
series	eCAADe
email
more	http://www.uni-weimar.de/ecaade/
last changed	2022/06/07 07:50

_id	130d
authors	Hoinkes, R. and Mitchell, R.
year	1994
title	Playing with Time - Continuous Temporal Mapping Strategies for Interactive Environments
source	6th Canadian GIS Conference, (Ottawa Natura Resources Canada), pp. 318-329
summary	The growing acceptance of GIS technology has had far- reaching effects on many fields of research. The recent developments in the area of dynamic and temporal GIS open new possibilities within the realm of historical research where temporal relationship analysis is as important as spatial relationship analysis. While topological structures have had wide use in spatial GIS and have been the subject of most temporal GIS endeavours, the different demands of many of these temporally- oriented analytic processes questions the choice of the topological direction. In the fall of 1992 the Montreal Research Group (MRG) of the Canadian Centre for Architecture mounted an exhibition dealing with the development of the built environment in 18th- century Montreal. To aid in presenting the interpretive messages of their data, the MRG worked with the Centre for Landscape Research (CLR) to incorporate the interactive capabilities of the CLR's PolyTRIM research software with the MRG's data base to produce a research tool as well as a public- access interactive display. The interactive capabilities stemming from a real- time object- oriented structure provided an excellent environment for both researchers and the public to investigate the nature of temporal changes in such aspects as landuse, ethnicity, and fortifications of the 18th century city. This paper describes the need for interactive real- time GIS in such temporal analysis projects and the underlying need for object- oriented vs. topologically structured data access strategies to support them.
series	other
last changed	2003/04/23 15:14

_id	7e68
authors	Holland, J.
year	1992
title	Genetic Algorithms
source	Scientific America, July 1992
summary	Living organisms are consummate problem solvers. They exhibit a versatility that puts the best computer programs to shame. This observation is especially galling for computer scientists, who may spend months or years of intellectual effort on an algorithm, whereas organisms come by their abilities through the apparently undirected mechanism of evolution and natural selection. Pragmatic researchers see evolution's remarkable power as something to be emulated rather than envied. Natural selection eliminates one of the greatest hurdles in software design: specifying in advance all the features of a problem and the actions a program should take to deal with them. By harnessing the mechanisms of evolution, researchers may be able to "breed" programs that solve problems even when no person can fully understand their structure. Indeed, these so-called genetic algorithms have already demonstrated the ability to made breakthroughs in the design of such complex systems as jet engines. Genetic algorithms make it possible to explore a far greater range of potential solutions to a problem than do conventional programs. Furthermore, as researchers probe the natural selection of programs under controlled an well-understood conditions, the practical results they achieve may yield some insight into the details of how life and intelligence evolve in the natural world.
series	journal paper
last changed	2003/04/23 15:50

_id	0a4c
authors	Holt, R.C. and Hume, J.N.P.
year	1980
title	Programming Standard PASCAL
source	x, 381 p. Reston, Verginia: Reston Publishing Company, Inc., 1980. includes index
summary	A comprehensive look at data structures, records, files, pointers and more, for effective programming using PASCAL. A practical guide book from an introduction level through advanced coverage of numerical methods, assembly language programming and compiler construction
keywords	PASCAL, programming, languages, education
series	CADline
last changed	2003/06/02 13:58

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