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 acadia21_354
id acadia21_354
authors Liu, Yulun; Lu, Yao; Akbarzadeh, Masoud
year 2021
title Kerf Bending and Zipper-in Spatial Timber Tectonics
source ACADIA 2021: Realignments: Toward Critical Computation [Proceedings of the 41st Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 979-8-986-08056-7]. Online and Global. 3-6 November 2021. edited by B. Bogosian, K. Dörfler, B. Farahi, J. Garcia del Castillo y López, J. Grant, V. Noel, S. Parascho, and J. Scott. 354-361.
doi https://doi.org/10.52842/conf.acadia.2021.354
summary Space frames are widely used in spatial constructions as they are lightweight, rigid, and efficient. However, when it comes to the complex and irregular spaces frames, they can be difficult to fabricate because of the uniqueness of the nodes and bars. This paper presents a novel timber space frame system that can be easily manufactured using 3-axis CNC machines, and therefore increase the ease of the design and construction of complex space frames. The form-finding of the space frame is achieved with the help of polyhedral graphic statics (PGS), and resulted form has inherent planarity which can be harnessed in the materialization of the structure. Inspired by the traditional wood tectonics kerf bending and zippers are applied when devising the connection details. The design approach and computational process of this system are described, and a test fabrication of a single node is made via 3-axis CNC milling and both physically and numerically tested. The structural performance shows its potentials for applications in large-scale spatial structures.
series ACADIA
type paper
email
last changed 2023/10/22 12:06

_id caadria2023_100
id caadria2023_100
authors Liu, Yuxuan and Xu, Wenzhao
year 2023
title A Data-Driven Approach for Interpreting Human Preference in Urban Public Spaces: A Case Study in London
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. 625–634
doi https://doi.org/10.52842/conf.caadria.2023.1.625
summary Sound, an often easily overlooked part of the urban composition, plays a crucial role in urban studies regarding how people perceive urban acoustic environments. Influenced by variable natural and artificial acoustic elements, the multi-level nature of urban soundscapes reflects multidimensional urban characteristics and thus demands thorough investigations. Unravelling the acoustic complexity and understanding its influence on public spaces' popularity will benefit the interpretation of urban soundscapes and help to build a more vibrant public life. In this paper, we utilize DepthMapX and QGIS to select specimen sites for further investigation. The behavioural analysis is performed through principle components analysis (PCA) and K-Means analysis based on data obtained within the city of London. This project seeks to develop digital strategies to investigate the relationship between urban public spaces and their soundscapes: to infer the correlation between people's emotions and the richness of urban environments. Through integrating machine-learning analytic approaches into visualizing how citizens perceive or experience the urban sound environment, our research aims to positively assist and inform urban practitioners in planning and designing more benign acoustic environments.
keywords Urban Soundscape, Data-driven Analysis, Machine Learning, Multidimensional Data visualization
series CAADRIA
email
last changed 2023/06/15 23:14

_id ecaade2023_466
id ecaade2023_466
authors Liu, Zidong, Li, Han, Koehler, Daniel and Li, Yan
year 2023
title Predicting Non-functional Nodes of Floorplan via Graph Neural Network (GNN)
source Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 2, Graz, 20-22 September 2023, pp. 529–538
doi https://doi.org/10.52842/conf.ecaade.2023.2.529
summary This paper presents an innovative approach to automating the floorplan generation process by employing Graph Neural Networks (GNN) to facilitate the transition from functional assignment lists to bubble diagrams and eventually to floorplan graphs. In recent years, there have been many studies on the interconversion of floorplan graph and layout design. However, these studies usually mix up floorplan graph and bubble diagram, despite their distinct roles in representing spatial and functional relationships, respectively. To address this disparity, we introduce a research framework comprising three main steps. First, we generate the CubiBubble5k dataset, which encompasses bubble diagrams and functional lists, drawing on the existing CubiCasa5k and CubiGraph5k datasets. Next, we train a GNN to transform design assignments into structured graph data, utilizing functional lists as input and bubble diagrams as output. Subsequently, we train another GNN that predicts and inserts non-functional spaces, such as corridors and anterooms, into purely functional bubble diagrams, using bubble graphs as input and floorplan graphs as output. We assess the performance of both GNNs and, by integrating our framework with the established graph2plan study, successfully demonstrate the generation of real-world floorplans from project task books. Lastly, we conduct case studies to validate the feasibility of our proposed framework. We use the existing graph2plan platform to visualize the impact of our algorithm on the final layout.
keywords Floorplan Automation, Bubble Diagram, Graph Restructure, Graph Neural Network
series eCAADe
email
last changed 2023/12/10 10:49

_id acadia21_512
id acadia21_512
authors Liu, Zidong
year 2021
title Topological Networks Using a Sequential Method
source ACADIA 2021: Realignments: Toward Critical Computation [Proceedings of the 41st Annual Conference of the Association of Computer Aided Design in Architecture (ACADIA) ISBN 979-8-986-08056-7]. Online and Global. 3-6 November 2021. edited by B. Bogosian, K. Dörfler, B. Farahi, J. Garcia del Castillo y López, J. Grant, V. Noel, S. Parascho, and J. Scott. 512-519.
doi https://doi.org/10.52842/conf.acadia.2021.512
summary The paper shares preliminary results of a novel sequential method to expand existing topology-based generative design. The approach is applied to building an interactive community design system based on a mobile interface. In the process of building an interactive design system, one of the core problems is to harness the complex topological network formed by user demands. After decades of graph theory research in architecture, a consensus on self-organized complex networks has emerged. However, how to convert input complex topological data into spatial layouts in generative designs is still a difficult problem worth exploring. The paper proposes a way to simplify the problem: in some cases, the spatial network of buildings can be approximated as a collection of sequences based on circulation analysis. In the process of network serialization, the personalized user demands are transformed into activity patterns and further into serial spaces. This network operation gives architects more room to play with their work. Rather than just designing an algorithm that directly translates users’ demands into shape, architects can be more actively involved in organizing spatial networks by setting up a catalogue of activity patterns of the residents, thus contributing to a certain balance of top-down order and bottom-up richness in the project. The research on data serialization lays a solid foundation for the future exploration of Recurrent Neural Network (RNN) applied to generative design.
series ACADIA
type paper
email
last changed 2023/10/22 12:06

_id caadria2016_405
id caadria2016_405
authors Liuti, Alessandro; Keryn Liew and Lian Chen Ng
year 2016
title In(flatable) Mod(uli): Air-buoyant, form-resistant, temporary structures
source Living Systems and Micro-Utopias: Towards Continuous Designing, Proceedings of the 21st International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2016) / Melbourne 30 March–2 April 2016, pp. 405-414
doi https://doi.org/10.52842/conf.caadria.2016.405
summary Conventional inflatable material systems offer a quick and reversible means of construction, however presenting limitations in terms of adaptability. Conventional, discrete, form-resistant structures feature stability through the complex organisation of discrete ele- ments, however featuring inertias in terms of flexibility and disecon- omies if applied to projects with a short lifespan. This paper discusses an alternative application of inflatable buoyant moduli to a discrete form-resistant structure in order to provide an adaptive installation for temporary events. Numerical and physical models are developed through a series of benchmarks, first, and a design project application eventually. The inherent predictability of this complex system is stud- ied in terms of constructability, costs, flexibility and spatial quality.
keywords Inflatable; buoyant; form-finding; modular; structure
series CAADRIA
email
last changed 2022/06/07 07:59

_id 4744
authors Livingstone, Margaret and Hubel, David
year 1988
title Segregation of Form, Color, Movement, and Depth : Anatomy, Physiology, and Perception
source Science. May, 1988. vol. 240: pp. 740-750 : ill. some col. includes bibliography
summary Anatomical and physiological observations in monkeys indicate that the primate visual system consists of several separate and independent subdivisions that analyze different aspects of the same retinal image: cells in cortical visual areas 1 and 2 and higher visual areas are segregated into three interdigitating subdivisions that differ in their selectivity for color, stereopsis, movement, and orientation. The pathways selective for form and color seem to be derived mainly from the parvocellular geniculate subdivisions, the depth- and movement-selective components from the magnocellular. At lower levels, in the retina and in the geniculate, cells in these two subdivisions differ in their color selectivity, contrast sensitivity, temporal properties, and spatial resolution. These major differences in the properties of cells at lower levels in each of the subdivisions led to the prediction that different visual functions, such as color, depth, movement, and form perception, should exhibit corresponding differences. Human perceptual experiments are remarkably consistent with these predictions. Moreover, perceptual experiments can be designed to ask which subdivisions of the system are responsible for particular visual abilities, such as figure/ground discrimination or perception of depth from perspective or relative movement-functions that might be difficult to deduce from single-cell response properties
keywords color, theory, perception
series CADline
last changed 2003/06/02 10:24

_id ijac20108106
id ijac20108106
authors Llach, Daniel Cardoso
year 2010
title Shift+Design: Scripts and Other Design Artifacts
source International Journal of Architectural Computing vol. 8 - no. 1, 17-28
summary Beyond the debate about the possible advantages of the automation of time-consuming drafting tasks, or of the expressive qualities that emerge from the use of scripts in architectural design, this article posits the idea that scripts constitute a new kind of "design artifact", reconfiguring a designer's engagement with a design problem. By examining how scripts destabilize dominant conceptions of architectural representations as figural descriptions the article delineates the ongoing emergence of a performative and computational epistemology of architectural design.
series journal
last changed 2019/05/24 09:55

_id acadia15_483
id acadia15_483
authors Llaguno Munitxa, Maider; Bogosian, Biayna
year 2015
title Sensing Urban Microclimates
source ACADIA 2105: Computational Ecologies: Design in the Anthropocene [Proceedings of the 35th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-53726-8] Cincinnati 19-25 October, 2015), pp. 483-496
doi https://doi.org/10.52842/conf.acadia.2015.483
summary Drawing from on-going theoretical and experimental research, this paper ultimately presents a conceptual framework that would promote the development of research and design strategies for post-smart cities.
keywords GIS, data-visualization, microclimate, sensing, air-quality, urban-design
series ACADIA
type normal paper
email
last changed 2022/06/07 07:59

_id 52a4
authors Llavaneras S., Gustavo J.
year 2000
title Bases para el desarrollo de un Asistente Inteligente que ayude a los diseñadores con las fenestraciones (Base for the Development of an Intelligent Assistant Who Helps the Designers with Fenestrations)
source SIGraDi’2000 - Construindo (n)o espacio digital (constructing the digital Space) [4th SIGRADI Conference Proceedings / ISBN 85-88027-02-X] Rio de Janeiro (Brazil) 25-28 september 2000, pp. 230-235
summary In this paper we discuss the basis for the design of an Intelligent Design Assistants system, as for the development and application of an intelligent agent for design, predict and evaluate fenestrations. Its main goal is to answer our worries about the possibility of the implementation of the Partnership Paradigm through the development of one Intelligent Design Assistant. The paper deals from the difficulties of defining what design is, through its two main Paradigms, their instrumentation in CAAD systems, definition and explanation of the Partnership Paradigm, as proposed by Swerdloff y Kalay, agents approach, to the Intelligent Design Assistants system, in special one Assistant for Designing fenestrations. The paper finishes with the author’s vision on what the future on the Architecture profession will be in a world of Intelligent Design Assistants.
series SIGRADI
email
last changed 2016/03/10 09:55

_id 1fe9
authors Llavaneras Sánchez, Gustavo José
year 2001
title TITULACIÓN COMO ARQUITECTO EN EL MARCO DEL DISEÑO DE AMBIENTES VIRTUALES (Obtaining a Degree as Architect within the Framework of Virtual Environments Design)
source SIGraDi biobio2001 - [Proceedings of the 5th Iberoamerican Congress of Digital Graphics / ISBN 956-7813-12-4] Concepcion (Chile) 21-23 november 2001, pp. 159-161
summary In this paper I define my aproach to what a Degree Project in Architecture is, and study different ways of working in degree projects in the area of Computer Applications to Architecture. A brief study on the different approaches that may be used for this project is done, as good as defining the neccesary basis for implementing such Degree Project in the field of Virtual Buildings Desing in one of its many variations. I also explain one expirience in progress with a group of students who are working in their Degree Project in this area, in a completely experimental way.
series SIGRADI
email
last changed 2016/03/10 09:55

_id 93a0
authors Llavaneras Sánchez, Gustavo José
year 2001
title El diseño de mundos virtuales como proyecto de titulacion de pregrado en arquitectura. [Virtual Design as a Degree Project in Architecture]
source 2da Conferencia Venezolana sobre Aplicación de Computadores en Arquitectura, Maracaibo (Venezuela) december 2001, pp. 166-173
summary In this paper our approach to what we think about a Degree Project in Architecture is defined, and a study of different ways of doing such degree projects in the area of Computer Applications to Architecture is done. We also set the neccesary basis for implementing such Degree Project in the field of Virtual Buildings Desing in one of its many variations. One expirience in progress with a group of students who are doing their Degree Project in this area, in a completely experimental way, is also explained. We finish with our conclusions on the subject.
keywords Architecural Design Teaching; Degree Project; Computer Aided Architecture
series other
email
last changed 2003/02/14 08:29

_id caadria2013_071
id caadria2013_071
authors Lloret Kristensen, Ena; Fabio Gramazio, Matthias Kohler and Silke Langenberg
year 2013
title Complex Concrete Constructions – Merging Existing Casting Techniques with Digital Fabrication
source Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 613-622
doi https://doi.org/10.52842/conf.caadria.2013.613
wos WOS:000351496100060
summary In the course of the 20th century, architectural construction has gone through intense innovation in its material, engineering and design, radically transforming the way buildings were and are conceived. Technological and industrial advances enabled and challenged architects, engineers and constructors to build increasingly complex architectural structures from concrete. Computer-Aided Design and Manufacturing (CAD/CAM) techniques have, more recently, rejuvenated and increased the possibilities of realising ever more complex geometries. Reinforced concrete is often chosen for such structures since almost any shape can be achieve when poured into a formwork. However, designs generated with digital tools tend to have limited relation to the efficient modes of production typically used in contemporary concrete construction. A large gap has emerged between the technology in architectural design and the building industry, so that few efficient solutions exist for the production of geometrically complex structures in concrete. This paper focuses on the capabilities and efficiency of existing casting techniques both with static and dynamic formwork which, when combined with digital fabrication, allow innovative fabrication approaches to be taken. Particular focus is placed on slipforming, an approved and efficient construction technique, which until now is unexplored in conjunction with digital fabrication. 
keywords Complex concrete structures, Casting techniques, Formwork, Slipforming, Digital fabrication, Smart dynamic casting 
series CAADRIA
email
last changed 2022/06/07 07:59

_id 6eb1
authors Lloyd, P. and Deasley, P.
year 1998
title Ethnographic description of design networks
source Automation in Construction 7 (2-3) (1998) pp. 101-110
summary One of the central themes of a commercial design process is communication. Complex design artefacts, rather than being rationally thought out by individuals, evolve through designers negotiating and bargaining with clients and peers alike. Problems are resolved through discussion and explanation. The 'design process,' as a reified entity, cannot be apprehended by any individual. Understanding of the process is spread over a social network, and through the narratives and discourses that are forged from day to day. This is design as a social process. The focus of the present paper is twofold. First, we wish to establish the field of ethnography as a particularly useful method of describing design in its social form. Secondly, we describe the results of a design case study we have carried out, using ethnographic methods, in an aerospace manufacturing company. We observe informal structures determining work activity, and the use of subtle `role' playing in problem-solving.
series journal paper
more http://www.elsevier.com/locate/autcon
last changed 2003/05/15 21:22

_id 28f5
authors Lloyd, P. and Scott, P.
year 1994
title Discovering the design problem
source Design Studies, Vol 15, No 2, 125-140
summary The design disciplines of architecture, engineering, and computer science have provided three distinct models of the design process. We hypothesize that these models merely indicate three approaches to design, and that fragments of all three models will be found in any one discipline. To discuss this issue we present a discipline-independent cognitive framework which we then apply to a protocol analysis study of five engineering designers. Our results indicate that the designer's experience plays a key role in determining the design process.
series journal paper
last changed 2003/04/23 15:14

_id ecaade2017_309
id ecaade2017_309
authors Lo Turco, Massimiliano, Zich, Ursula, Astolfi, Arianna, Shtrepi, Louena and Botto Poaola, Matteo
year 2017
title From digital design to physical model - Origami techniques applied to dynamic paneling shapes for acoustic performance control
source Fioravanti, A, Cursi, S, Elahmar, S, Gargaro, S, Loffreda, G, Novembri, G, Trento, A (eds.), ShoCK! - Sharing Computational Knowledge! - Proceedings of the 35th eCAADe Conference - Volume 2, Sapienza University of Rome, Rome, Italy, 20-22 September 2017, pp. 77-86
doi https://doi.org/10.52842/conf.ecaade.2017.2.077
summary The recent trend toward non-standard and free form architecture has generated a lot of debate among the Scientific Community. The reasons can be found in the renewed interest in organic shapes, in addition to recent and powerful capabilities of parametric platforms. In this regard, the Visual Programming Language (VPL) interface gives a high level of freedom and control for conceiving complex shapes. The geometric problems in identifying a suitable shape have been addressed by relying on the study of Origami. The control of variable geometry has required the use of algorithmic models that ensure fast changes and free control of the model, besides a physical one made of rigid cardboard to simulate its rigid-foldability. The aim is to present a prototype of an adaptive structure, with an acoustic application, to control sound quality and perception in spaces where this has a central role, such as theatres or concert halls.
keywords parametric modeling; generative design; shape and form studies; acoustics conditions; digital Representation
series eCAADe
email
last changed 2022/06/07 07:59

_id caadria2014_171
id caadria2014_171
authors Lo, Chia-Hui and Teng-Wen Chang
year 2014
title Lily: Developing a Contextual Idea Linking Tool for Designing on Site
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. 667–676
doi https://doi.org/10.52842/conf.caadria.2014.667
summary This research develops a supporting tool (Lily) to inspire designer generates relevant ideas while he or she is on site visiting. This mobile application has been developed via scenario-based design paradigm and testing experiment. Based on the analysis of the interaction process from experiment observation, the visualization is comprised of both the physical information (site) and virtual information (linking form idea pieces) that is implemented based on the Location-Based technology with iOS application platform. An implementation called Lily.
keywords Mobile; idea linking; on site; design tool
series CAADRIA
email
last changed 2022/06/07 07:59

_id ijac201412206
id ijac201412206
authors Lo, Chia-Hui Nico; Ih-Cheng Lai, Teng-Wen Chang
year 2014
title Design Jigsaw: Exploring a computational approach to assembling ideas in the design production process
source International Journal of Architectural Computing vol. 12 - no. 2, 199-212
summary Idea generation in the design production process often occurs within brainstorming sessions. Linking ideas is the key mechanism in the process of producing design. Through linking ideas, a graph-like knowledge is achieved in representing the individual memories, with the nodes and arcs being the ideas and the links between ideas respectively.The design process is similar to doing a jigsaw. Using the jigsaw metaphor, a cognitive study is applied to the design tool DIM (Dynamic Idea Map) to explore computational jigsaw mechanisms.Thereafter, a computational framework called Design Jigsaw is developed to support students in assembling vast ideas effectively and reveals the construction of meaning in the graph-like knowledge structure of design thinking.
series journal
last changed 2019/05/24 09:55

_id caadria2010_035
id caadria2010_035
authors Lo, Chia-Hui; Ih-Cheng Lai and Teng-Wen Chang
year 2010
title Playing jigsaw: finding the underlying structure of assembling ideas within design productive process
source Proceedings of the 15th International Conference on Computer Aided Architectural Design Research in Asia / Hong Kong 7-10 April 2010, pp. 371-380
doi https://doi.org/10.52842/conf.caadria.2010.371
summary Idea generation in design productive process often occurs within brainstorming sessions. Linking ideas is the key mechanism in this process to produce design. Through linking ideas, a graph-like knowledge is representing the individual memories with the nodes and arcs that are the ideas and the links between ideas respectively. Design is the process of puzzle-making, such thinking process is similar to play jigsaw. This research applies a computational tool (called DIM) to produce a graph-like knowledge including diverse jigsaw-like ideas and their relationships. Then we use protocol analysis to understand how designers organise the ideas. The objective is to find the hidden patterns of assembling ideas in the design productive process. Some feasibilities of the game mechanisms are proposed in this paper.
keywords design production; linking ideas; graph-like knowledge; protocol analysis; puzzle-making
series CAADRIA
email
last changed 2022/06/07 07:59

_id caadria2011_063
id caadria2011_063
authors Lo, Chia-Hui; Ih-Cheng Lai and Teng-Wen Chang
year 2011
title A is B, displacement: Exploring linking patterns within metaphor in the design process
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. 663-672
doi https://doi.org/10.52842/conf.caadria.2011.663
summary Design educators often apply metaphor as a teaching tool to help novice designers in their design process. Richards(1936) defines metaphor as the form “A is B”. The most important operation in metaphor is displacement—the linking process of moving A to B. Linking ideas is the key mechanism in the design process. By linking ideas, a graph-like knowledge represents the individual memories with the nodes and arcs that are the ideas and the links between ideas respectively. Such linking knowledge provides an interesting way to understand the operation of displacement within metaphor. This research applies a computational tool (called DIM) to produce a graph-like knowledge. Protocol analysis is then used to understand how designers organize ideas. The objective of this research was to explore the linking patterns of idea displacement within metaphor in the design process.
keywords Metaphor; displacement; linking ideas; graph-like knowledge; protocol analysis
series CAADRIA
email
last changed 2022/06/07 07:59

_id caadria2022_322
id caadria2022_322
authors Lo, Chun-Yu and Hou, June-Hao
year 2022
title A Natural Human-Drone Interface For Better Spatial Presence Experiences
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. 99-108
doi https://doi.org/10.52842/conf.caadria.2022.1.099
summary As many remote construction projects increase in size and complexity, being able to manage personnel schedules, delegate tasks, and check work progress can improve work efficiency and productivity. Hence, video conferencing and remote monitoring software have been attempting to pursue an immersive and intuitive experience, but with limited developments. To better achieve that, we propose a system with a natural user interface (NUI) that can offer a vivid experience, facilitating AEC personnel who is novice drone operator to interact with the Unmanned Aerial Vehicle (UAV) by voice instructions and body posture to conduct remote site surveying, monitoring, and inspections instead of physical visiting. In addition, the proposed system is capable of on-demand path planning and camera movements for various tasks and enhances the spatial experience. We integrate these techniques to develop a human-drone interface, including a VR simulator and a haptic vest system, which offer a perceivable experience of spatial presence for different purposes. Compared with other relative works, the proposed system allows users to actively control the viewing angle and movements in the remote space more intuitively. Moreover, drones can augment human vision and let users gain mobile autonomy.
keywords spatial presence, natural user interface, human-drone interaction, virtual reality, remote working, body posture recognition, speech recognition, SDG 9
series CAADRIA
email
last changed 2022/07/22 07:34

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