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

PDF papers
References

Hits 1 to 20 of 17478

Reformat results as: short short into frame detailed detailed into frame

_id	acadia23_v3_189
id	acadia23_v3_189
authors	Leung, Pok Yin Victor; Huang, Yijiang
year	2023
title	Task and Motion Planning for Robotic Assembly
source	ACADIA 2023: Habits of the Anthropocene: Scarcity and Abundance in a Post-Material Economy [Volume 3: Proceedings of the 43rd Annual Conference for the Association for Computer Aided Design in Architecture (ACADIA) ISBN 979-8-9891764-1-0]. Denver. 26-28 October 2023. edited by A. Crawford, N. Diniz, R. Beckett, J. Vanucchi, M. Swackhamer 24-32.
summary	When programming robotic assembly processes, it is often necessary to create a sequential list of actions. Some actions are robotic motions (requiring motion trajectory), and some are for controlling external equipment, such as grippers and fastening tools. The act of planning these actions and motion trajectories is called Task Planning and Motion Planning. Existing literature in robotics explored many different planning algorithms for planning a single trajectory to planning a complete sequence of tasks where continuity is maintained [Garrett et al, 2021]. Many application literature focused on the TAMP for service robots, medical robots, and self-driving cars, while there are few examples for architectural applications. For digital fabrication and automated construction, the planning method has to be adapted to the needs of architectural assemblies and the scale of construction [Leung et al, 2021]. Some of the unique challenges are the highly bespoke workpiece and assembly geometry, the large workpiece (e.g., long beams), and a dense collision environment. This three-day hybrid workshop addressed the needs of the architectural robotics community to use industrial robotic arms to assemble highly bespoke objects. The objects do not have any repetitive parts or assembly targets. The workshop leaders shared their experiences using industrial robots to construct large-scale timber structures. One of the most useful techniques is the recently published “Flowchart Planning Method,” where task sequence is planned using a flowchart, and motion trajectories are planned in a second pass [Huang et al, 2021].
series	ACADIA
type	workshop
last changed	2024/04/17 14:00

_id	6cb4
authors	Leupen, B., Grafe, C., Körnig, N., Lampe, M. and De Zeeuw, P.
year	1997
title	Design and Analysis
source	New York: Van Nostrand Reinhold
summary	Design and Analysis by Bernard Leupen, Christoph Grafe, Nicola Körnig, Marc Lampe, and Peter de Zeeuw Design and Analysis is an insightful, interdisciplinary exploration of the diversity of analytic methods used by architects, designers, urban planners, and landscape architects to understand the structure and principles of the built environment. Developed by a team headed by Bernard Leupen at Delft University of Technology, The Netherlands, Design and Analysis defies borders of history, geography, and discipline, tracing the evolution of design principles from ancient Greece to the 20th century. "Only methodical analysis gives us an insight into the design process," states architect Bernard Tschumi. Using historical examples from architecture, urban design, and landscape architecture, Design and Analysis defines an ordered system that enables the design student or professional to identify the factors that influence designers' decisions, and shows how to relate them to the finished project. Design and Analysis is organized into six chapters that correspond to these factors: order and composition, functionality, structure, typology, context, and analytical techniques. The authors introduce the analytical drawing as a time-tested means to obtaining insight into the design process. Over 100 line drawings are featured in all. Using contemporary architectural examples to teach ancient design principles, Design and Analysis is more than just an introduction to analytical methods. The authors give an outline of space design as a whole, from individual buildings to urban and landscape ensembles. Though primarily intended for design students to help them appreciate many of the issues that they will face as professionals, Design and Analysis's broad, easy-to-read approach makes it an invaluable handbook for designers of all disciplines.
series	other
last changed	2003/04/23 15:14

_id	ddss9861
id	ddss9861
authors	Leusen, M. van and Mitossi, V.
year	1998
title	A practical experiment in representation and analysis of buildings
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	The TYPOLOGY project was set up by the Dutch Government Building Agency (GBA) to explore computerised representations of buildings that allow analysis of various aspects of their performance. So far this project produced the RF-model, an abstract computerised representation.Physical elements of the building are not represented as such, only individual spaces and boundary segments along which they are adjacent are represented explicitly. Spaces can have any number of functional properties such as the general category of floor area they are included in, the activities they accommodate, or the particular safety compartment or circulation system they belong to. Similarly, boundary segments may, for example, provide access or view, may be included in a particularcategory, such as interior walls, or in a safety or security barrier.The RF-model enabled the presentation and quantitative analysis of design proposals for large and complex buildings such as courts of justice and prison buildings. The model is also used in a multiaspect analysis of a series of recently erected Dutch prison buildings. We expect that these first results will develop into a rich and professional precedent-based system, to be used in the early stages of design. The strategic goal of the project is to derive from the accumulated models and their analysis a more general understanding of the relations between a building’s actual characteristics and various aspects of its performance.
series	DDSS
last changed	2003/08/07 16:36

_id	ddss9461
id	ddss9461
authors	Leusen, Marc van
year	1994
title	System of Types in the Domain of Residential Buildings
source	Second Design and Decision Support Systems in Architecture & Urban Planning (Vaals, the Netherlands), August 15-19, 1994
summary	At the early stages of the architectural design process, general decisions are made with respect to a building's spatial organization. These concern its overall shape and size, as well as its internal organization. Characteristics of a building's spatial organization, however vaguely and incomplete-ly described at those stages, may have serious consequences for various aspects of its performan-ce. Those consequences are often difficult to determine in advance and emerge only during time-consuming elaboration of the design or even not before the actual building is in operation. A designer's ability of foreseeing them is much dependent on his knowledge of existing buildings. More particularly, it depends on his understanding of the performances of types rather than specific precedents. In general terms, the present study aims at supporting design decisions at the early stages by improving the awareness and understanding of types. Many architectural handbooks particularly those in the domain of housing attempt to support access to and acquisition of such knowledge through so-called typologies, in which types are described by means of graphical descriptions, and illustrated with one or more precedents. The effectiveness of such books as design supporting tools is limited by the fact, among others, that type descriptions are not based upon a well-defined representation of spatial organization. This leads to uncertainty as to the handbook's completeness and to unreliability of performances associated with types. The present study explores the possibilities of dealing with these shortcomings. It is limited to the domain of the complex residential building. After a review of existing work in the area of housing typology, the study presents and discusses the following products: (i) a type-representation of basic arrangements of dwellings, that is, a representation which retains only the most general characteristics of spatial organization, (ii) a demonstration of the potential of this representation; this demonstration involves the enumeration and limited exploration of certain ranges of type descriptions.
series	DDSS
last changed	2003/08/07 16:36

_id	2406
authors	Levens, S. A
year	1962
title	Graphics ; with an Introduction to Conceptual Design
source	743 p. : ill. New York: John Wiley & Sons Inc., 1962. includes index
summary	Provides engineering students modern treatment of graphics fundamental principles and applications of orthogonal projection, graphical solutions and computations and an introduction to conceptual design
keywords	computer graphics, conceptual design, drafting, education, projective geometry
series	CADline
last changed	1999/02/12 15:09

_id	888b
authors	Levin, Joshua
year	1976
title	A Parametric Algorithm for Drawing Pictures of Solid Objects Composed of Quadric Surfaces
source	Communications of the ACM. October, 1976. vol. 19: pp. 555- 563. includes bibliography
summary	An algorithm for drawing pictures of three-dimensional objects, with surfaces made up of patches of quadric surfaces, is described. The emphasis of this algorithm is on calculating the intersections of quadric surfaces. A parametrization scheme is used. Each quadric surface intersection curve (QSIC) is represented as a set of coefficients and parameter limits. Each value of the parameter represents at most two points, and these may easily be distinguished. This scheme can find the coordinates of points of even quartic (fourth-order) intersection curves, using equations of no more than second order. Methods of parametrization for each type of QSIC are discussed, as well as surface bounding and hidden surface removal
keywords	algorithms, curves, curved surfaces, intersection, hidden surfaces, parametrization, computational geometry
series	CADline
last changed	1999/02/12 15:09

_id	ijac20031301
id	ijac20031301
authors	Levy, Adrian J.
year	2003
title	Real and Virtual Spaces Generated By Music
source	International Journal of Architectural Computing vol. 1 - no. 3
summary	The main objective of this research work is to explore a new digital design process. This new method for the creation of spaces (referred to as Data Representation Architecture) entails the choice of any element from the everyday world, and the creation, by means of a digital a process, of either a real or a virtual space. In this particular case, the real element is music. Various melodies, some of them famous and some of them new or specially composed for the project, materialize their basic information and generate novel spaces. For each musical composition, many instruments were played, and the sound of each of them was then materialized in the final space. This is how alternative design processes are born, and a completely new architecture defined. In order to accomplish this research work, it was necessary to combine knowledge from different fields; namely, architecture, music, mathematics and computer science.
series	journal
more	http://www.multi-science.co.uk/ijac.htm
last changed	2007/03/04 07:08

_id	sigradi2009_143
id	sigradi2009_143
authors	Levy, Adrian Jose; Rivka Oxman
year	2009
title	Architects of information: Designing Architectural metaphors
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	Recently, the handling of information design by architects was motivated by the progress and exploration of digital technologies. They began to experiment with the use of informational metaphors and their application in virtual environments. This paper presents these new experimentations in 3D information visualization designed by architects interested in experimentation with digital media as information environments in design. The examples presented in this paper attempt to demonstrate the design of information and aim to illustrate approaches to the representation of the structure and relationships within abstract datasets. The architectural exploitation of metaphors may constitute unique formulations of knowledge structures capable of communicating information in unique ways.
keywords	architectural metaphors; information visualization; data structure; information representation; visual metaphor
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	4447
authors	Levy, Adrián José
year	2001
title	ESPACIOS REALES Y VIRTUALES GENERADOS POR MUSICA (Real and Virtual Spaces Generated by Music)
source	SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 151-152
summary	This research work has as its main aim exploring a new digital designing process. This new way of creating spaces, known as ‘Architecture of data’ entails choosing any event of the everyday world, and through a process, generating either a real or virtual space. In this particular case, the chosen event is the music. Several melodies, some of them famous, others especially composed for this project, come to existence as original spaces. For each composition, many musical instruments are played, each of which is part of the final space. In doing so, new alternative designing processes emerge. This processes build non conventional spaces that might outline a whole new architecture. Different fields of knowledge, namely architecture, music, maths and computing sciences had to be brought together in order to achieve the present work.
series	SIGRADI
email
last changed	2016/03/10 09:54

_id	4af9
authors	Levy, Henry
year	1984
title	VAXstation : A General-Purpose Raster Graphics Architecture
source	ACM Transactions on Graphics. January, 1984. vol. 3: pp. 70-83 : ill. includes bibliography
summary	A raster graphics architecture and a raster graphics device are described. The graphics architecture is an extension of the RasterOp model and supports operations for rectangle movement, text writing, curve drawing, flood, and fill. The architecture is intended for implementation by both closely and loosely coupled display subsystems. The first implementation of the architecture is a remote raster display connected by fiber optics to a VAX minicomputer. The device contains a separate microprocessor, frame buffer, and additional local memory: it is capable of executing raster commands on operands in local memory or VAX host memory
keywords	hardware, computer graphics, technology
series	CADline
last changed	1999/02/12 15:09

_id	2edf
authors	Levy, Pierre
year	1998
title	Becoming Virtual, Reality in the Digital Age
source	Plenum Trade, New York
summary	Pierre Levy takes a fresh look at the whole idea of what is virtual. He's responding to the widespread belief, and sometimes even panic, that a digital society with emphasis on virtual interactions is necessarily depersonalizing. He takes particular exception to the notion that "virtual" and "real" are opposites. Instead, Levy argues that virtuality is one of four modes of existence, the rest of which he describes as reality, possibility, and actuality. Each is defined in terms of its relationship with its environment. In following Levy's world view, you may find that he interprets some or all of those terms in ways you're not used to, but the result is an interesting new approach to what it means to be part of an increasingly digital world. He examines the virtualization of several elements our society: the corporal body, text, the economy, language, technology, contracts, intelligence, subjects, and objects. What he finds is not a destruction of the personal so much as a transformation. Virtualization adds to, but does not replace, the real, the possible, and the actual. By understanding what virtualization means and involves, Levy believes that society will gain a greater variety of options for interaction in all areas. Becoming Virtual is a serious philosophical work, dense with ideas.
series	other
last changed	2003/04/23 15:14

_id	b7fd
authors	Levy, R. M.
year	1998
title	Information Technology and the Planning Profession-Where is it Taking Us?
source	Plan Canada 38(no.5, September), pp. 24-29
summary	Contributed by Susan Pietsch (spietsch@arch.adelaide.edu.au)
keywords	3D City Modeling, Development Control, Design Control
series	other
last changed	2001/06/04 20:41

_id	ec44
authors	Levy, R.
year	1995
title	Visualization of urban alternatives
source	Environment and Planning B: Planning and Design 22, pp. 343-358
summary	Contributed by Susan Pietsch (spietsch@arch.adelaide.edu.au)
keywords	3D City Modeling, Development Control, Design Control
series	other
last changed	2001/06/04 20:41

_id	6f47
authors	Lewin, J.S. and Gross, M.D.
year	1997
title	Resolving archaeological site data with 3D computer modeling: the case of Ceren
source	Automation in Construction 6 (4) (1997) pp. 323-334
summary	This paper reports on our experience working with a team of anthropologists to construct three-dimensional computer graphic models of Ceren, an archaeological site in western El Salvador, using inexpensive hardware and software. In constructing the model we discovered various ambiguities and inconsistencies in the raw site data and drawings we were provided. We resolved these problems by analysis and reinterpretation of the data, working closely with our archaeologist collaborator. What began as a simple exercise in rendering developed into a collaborative research effort to understand and interpret the source data. The process of computer modeling forced us to re-examine, analyze and interpret the information from the site.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	6e4f
authors	Lewin, J.S., Ehrhardt, M. and Gross, M.D.
year	1997
title	Not Just Another Pretty Face: Images and Arguments in an Anthropology Web Site
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 635-654
summary	We are developing a web site with photorealistic animations and virtual reality walk throughs of architecture and artifacts at an archaeological site in El Salvador. The goal of the site is to support research and teaching about household anthropology in sixthcentury Meso-America. To counter the false sense of realism and truth these experiences often convey we have developed Image Arguments, a scheme for integrating with images the arguments and data that they are based on. We provide this contextual information using a server side database and client side Java applets, enabling viewers to examine the assumptions and the data behind the images.
series	CAAD Futures
email
last changed	1999/04/06 09:19

_id	4e8e
authors	Lewin, Jenniffer S. and Gross, Mark D.
year	1996
title	Resolving Archaeological Site Data With 3D Computer Modeling: The Case of Ceren
doi	https://doi.org/10.52842/conf.acadia.1996.255
source	Design Computation: Collaboration, Reasoning, Pedagogy [ACADIA Conference Proceedings / ISBN 1-880250-05-5] Tucson (Arizona / USA) October 31 - November 2, 1996, pp. 255-266
summary	This paper reports on our experience working with a team of anthropologists to construct three- dimensional computer graphic models of Ceren, an archaeological site in western El Salvador, using inexpensive hardware and software. In constructing the model we discovered various ambiguities and inconsistencies in the raw site data and drawings we were provided. We resolved these problems by analysis and reinterpretation of the data, working closely with our archaeologist collaborator. What began as a simple exercise in rendering developed into a collaborative research effort to understand and interpret the source data. The process of computer modeling forced us to re-examine, analyze and interpret the information from the site.
series	ACADIA
email
last changed	2022/06/07 07:52

_id	ga0109
id	ga0109
authors	Lewis, Chak Chan
year	2001
title	Defects Defined by Form Making Method for Improving Generative Design System
source	International Conference on Generative Art
summary	Evolutionary-based Generative Design System (GDS) is generally designed for industrial designers during the early stage of conceptual design. Although “additive” Rapid Prototyping (RP) methods are commonly applied for the physical realization, grown Surfaces Object (SO) created from these GDS still has room to be considered to a combined workable volume,especially for the more complex design. The inarticulate processes from GDS to Generative Production System (GPS) are linking up with different aspects and contexts as well as the conventional Computer-Aided Design (CAD)/RP integration, which has been conducted for along time. There are design constraints existing between 3D SO in industry design representation and feasible 3D production solution. Perception to object designing with knowledge is limited at SO forming by incomplete interpretations. Meanwhile, it is difficult to discern the problemsof incomplete object generation as hidden illegal design occurred from time to time because of the design constraints, despite the completion of the design representation. It has led to some of the invalidity of surface feature at the end. The reconstruction of the RP process ofthe SO pre-processing procedure can help to clarify these defects with thickness requirement in generative production. The aim of this paper is to verify an effective generative design strategy as a possibility ofimplementing method(s) or tool. They will be built within a surface-oriented GDS by mapping a valid object directly accepted by any RP system without any influence on generative object creating. Through the involvement of Form Making processes of RP from selected instants with their solid phenomena, evidences are used for defending this viewpoint.Throughout the process, generative design method and CAD method have been utilized for the creation of virtual form. The 3D printer and Fused Deposition Modeling (FDM) technology with “trial and error” method were employed in the RP processes.
series	other
email
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	abcd
authors	Lewis, H. and Papadimitriou, C.
year	1981
title	Elements of the Theory of Computation
source	Prentice Hall, New Jersey
summary	Provides an introduction to the classical and contemporary theory of computation and deep insights into the fundamental paradigms of computer science. Covers sets, relations, and languages, finite automata & Turing machines. Revised new edition. DLC: Machine theory.
series	other
last changed	2003/04/23 15:14

_id	acadia06_548
id	acadia06_548
authors	Lewis, K., Kentnar, J.
year	2006
title	110% Juice
doi	https://doi.org/10.52842/conf.acadia.2006.548
source	Synthetic Landscapes [Proceedings of the 25th Annual Conference of the Association for Computer-Aided Design in Architecture] pp. 548-549
summary	New England’s seacoast is an active, working landscape. Here, with long history of whaling, sailing, and fishing, people have lived comfortably next to their economic infrastructure. Recent infrastructure projects, such as Deer Island Water Treatment Facility and the Big Dig, have embraced landscape as a way to facilitate modern “live / work” relationships.Wind turbines are part of the working landscape. So are ferries, commercial fishing, and cranberries. All clean, prosperous, and socially vibrant industry, we see the Cape Wind Project as a way to bring these landscape industries closer together, and to reestablish the vision of Cape Cod as a working landscape.The current wind proposal offers 100% efficiency with 0% consideration of the view. The turbines’ current configuration produces a view that is uneven and disorganized. Efficiency doesn’t have to be lost at the expense of aesthetics. By proposing a circle of turbines rather than a grid, an even perspective is provided for all of the cape and the islands (no strange bunches, as with the grid); the turbines are less dense, allowing one to see through them, and not just at them; service travel between turbines is shortened – 77 miles of travel for the grid versus 46 miles for the circle. By becoming larger, the effect of the circular array has become smaller.
series	ACADIA
email
last changed	2022/06/07 07:52

_id	b36d
authors	Lewis, Martin Lewis and Wojtowicz, Jerzy
year	2001
title	Design in the New Media - Digital Design Pedagogy at the SoA, University of British Columbia
doi	https://doi.org/10.52842/conf.ecaade.2001.256
source	Architectural Information Management [19th eCAADe Conference Proceedings / ISBN 0-9523687-8-1] Helsinki (Finland) 29-31 August 2001, pp. 256-261
summary	The idea of the Bauhaus education was born out of the conviction that designs for mass production and modern architecture needed a new fundamental design strategy. Today, seventy-five years later, the modern, basic design pedagogy needs to be revisited, as the impact of the Information Technology Revolution on design practice and education is now extensive. The illustrations and reflections on a modern curriculum for fundamental design and communication presented in this paper are derived from the authors’ introduction of the new media to design studios at UBC and from design practice. In the case of the nascent student of architecture, a different, rudimentary approach is required: one calling for the combining of the modern, basic design agenda with the introduction of the new media. The fundamental digital design pedagogy is young and not fully established. This is a considerable problem, since the practice and learning of architecture today is increasingly aided by and dependent upon digital media. Parallel to the traditional methods, the contemporary student of design is now obliged to engage new and dynamic conditions at the formative stage of his or her education. In the recent past, the computer was considered as just another device, requiring the development of mechanical techniques or skills. While those skills still have to be mastered, more recently in design education and practice, IT has become accepted as MEDIA - not just as a drafting or modeling tool. This process is perhaps due to the rapid dissemination of computing literacy and to the progressive accessibility and ease of use of IT. At UBC, Techniques and the Foundation Studio are introductory courses intended to make students engage the new media in parallel with, and complimentary to, established conventions in design.
keywords	Imagining, Communicating
series	eCAADe
email
last changed	2022/06/07 07:52

For more results click below: