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 ijac202018103
id ijac202018103
authors Kimm, Geoff
year 2020
title Actual and experiential shadow origin tagging: A 2.5D algorithm for efficient precinct-scale modelling
source International Journal of Architectural Computing vol. 18 - no. 1, 41-52
summary This article describes a novel algorithm for built environment 2.5D digital model shadow generation that allows identities of shadowing sources to be efficiently precalculated. For any point on the ground, all sources of shadowing can be identified and are classified as actual or experiential obstructions to sunlight. The article justifies a 2.5D raster approach in the context of modelling of architectural and urban environments that has in recent times shifted from 2D to 3D, and describes in detail the algorithm which builds on precedents for 2.5D raster calculation of shadows. The algorithm is efficient and is applicable at even precinct scale in low-end computing environments. The simplicity of this new technique, and its independence of GPU coding, facilitates its easy use in research, prototyping and civic engagement contexts. Two research software applications are presented with technical details to demonstrate the algorithm’s use for participatory built environment simulation and generative modelling applications. The algorithm and its shadow origin tagging can be applied to many digital workflows in architectural and urban design, including those using big data, artificial intelligence or community participative processes.
keywords 2.5D raster, actual and experiential shadow origins, generative techniques, participatory built environment simulation, reactive scripting for design
series journal
email
last changed 2020/11/02 13:34

_id acadia20_698
id acadia20_698
authors Kimm, Geoff; Burry, Mark
year 2020
title Steering into the Skid
doi https://doi.org/10.52842/conf.acadia.2020.1.698
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. 698-707.
summary What if any perceived risks of lost authorship and artistic control posed by a wholesale embrace of artificial intelligence by the architectural profession were instead opportunities? AI’s potential to automate design has been pursued for over 50 years, yet aspirations of early researchers are not fully realized. Nonetheless, AI’s advances continue to be rapid; it is an increasingly viable adjunct to architectural practice, and there are fundamental reasons for why the perceived “risks” of AI cannot be dismissed lightly. Architects’ professional role at the intersection of social issues and technology, however, may allow them to avoid the obsolescence faced by other roles. To do this, we propose architects responsively arbitrage an ever-changing gap between maturing AI and mutable social expectations— arbitrage in the sense of seeking to exercise individual judgment to negotiate between diverse considerations and capacities for mutual advantage. Rather than feel threatened, evolving architectural practice can augment an expanded design process to generate and embed new subtleties and expectations that society may judge contemporary AI alone as being unable to achieve. Although there can be no road map to the future of AI in architecture, historical misevaluations of machines and our own human capabilities inhibit the intertwined, synergistic, and symbiotic union with AI needed to avoid a zero-sum confrontation. To act myopically, defensively, or not at all risks straitjacketing future definitions of what it means to be an architect, designer, or even a professionally unaligned creative and productive human being.
series ACADIA
type paper
email
last changed 2023/10/22 12:06

_id lasg_whitepapers_2019_012
id lasg_whitepapers_2019_012
authors Kimmerer, Luke
year 2019
title Interview with Sarah Bonnemaison; On Organicism
source Living Architecture Systems Group White Papers 2019 [ISBN 978-1-988366-18-0] Riverside Architectural Press: Toronto, Canada 2019. pp. 012 - 025
summary Interview with Sarah Bonnemaison
keywords living architecture systems group, organicism, intelligent systems, design methods, engineering and art, new media art, interactive art, dissipative systems, technology, cognition, responsiveness, biomaterials, artificial natures, 4DSOUND, materials, virtual projections,
email
last changed 2019/07/29 14:02

_id acadia09_130
id acadia09_130
authors Kimpian, Judit; Mason, Josh; Coenders, Jeroen; Jestico, Dan; Watts, Steve
year 2009
title Sustainably Tall: Investment, Energy, Life Cycle
doi https://doi.org/10.52842/conf.acadia.2009.130
source ACADIA 09: reForm( ) - Building a Better Tomorrow [Proceedings of the 29th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-9842705-0-7] Chicago (Illinois) 22-25 October, 2009), pp. 130-143
summary The purpose of this project is to provide an interactive platform for clients and design teams to evaluate the consequences of shape, form, and briefing decisions on the energy use, embodied energy, and capital / life-cycle cost of a tall building early in the design process. The Tall Building Simulation (TBS) model is the result of a collaborative partnership between Aedas, Arup, Hilson Moran (HM), and Davis Langdon (DL). It is estimated that most decisions determining the sustainability of a project are made in the first 1 percent of a project’s program, whereas the majority of the information required for sustainability assessment is not usually available or examined until after the concept stage. By this time, most solutions would need design or briefing changes that are too costly to implement. Using the TBS model, architects, engineers, and clients can simultaneously explore the impact of typical technical and design decisions on a tall building’s energy footprint and its dynamic relationship to cost at the briefing stage.
keywords Design evaluation, environmental impact, energy, simulation
series ACADIA
type Normal paper
email
last changed 2022/06/07 07:52

_id caadria2024_352
id caadria2024_352
authors Kimura, Shun and Ikeda, Yasushi
year 2024
title An Approach to Improve Individual Thermal Comfort Based on Mobile Measurement of Biological Reaction to Proximate Thermal Environment
doi https://doi.org/10.52842/conf.caadria.2024.1.425
source Nicole Gardner, Christiane M. Herr, Likai Wang, Hirano Toshiki, Sumbul Ahmad Khan (eds.), ACCELERATED DESIGN - Proceedings of the 29th CAADRIA Conference, Singapore, 20-26 April 2024, Volume 1, pp. 425–434
summary Thermal comfort is a critical research field because it affects people's health, productivity, and well-being in an architectural space. Numerous previous studies have attempted to find thermal environment conditions where average people feel comfortable. Recently, researchers have focused more on estimating and improving thermal comfort on an individual level to improve the accuracy of previous methods, leveraging recent developments in sensing technologies. However, there are still some remaining issues, such as limited scalability due to the use of in-place sensors and the assumption of a uniform thermal environment, making it unable to recognize locational differences. This study is fundamental research that proposes a human-based approach based on a mobile measurement system to overcome these issues. Firstly, the concept and the benefits are clarified and then, the methodologies and results of two fundamental experiments are explained. One was a field experiment to investigate its validity in estimating individual thermal comfort in real-life situations. The other one was to consider and examine ways to improve individual thermal comfort by the human-based approach. The results suggest that the human-based approach can be beneficial in a way never seen although some issues need to be addressed in future research.
keywords individual thermal comfort, mobile sensing, HCI, human-centric modeling, interactive environment
series CAADRIA
email
last changed 2024/11/17 22:05

_id a4f6
authors Kimura, T., Komatsu, K. and Watanabe, H.
year 1995
title Spatial Configuration Data Model For InterApplicational Collaborative Design
source Sixth International Conference on Computer-Aided Architectural Design Futures [ISBN 9971-62-423-0] Singapore, 24-26 September 1995, pp. 761-770
summary In this paper, a new design method is proposed which will enable the designer to predict and control the flow of pedestrians acting inside the designed building. Watanabe laboratory has been working on human behavioral research, and referring to the results of these studies, the authors pointing out the requirements for a tool supporting the new design method. Later on, a data model and a loosely integrated system intended to match the needs will be proposed.
keywords Human Behavior, Design Method, Design Process, Integrated CAD System
series CAAD Futures
last changed 1999/08/03 17:16

_id ecaade2009_099
id ecaade2009_099
authors Kinayoglu, Gökçe
year 2009
title Using Audio-Augmented Reality to Assess the Role of Soundscape in Environmental Perception: An Experimental Case Study at UC Berkeley Campus
doi https://doi.org/10.52842/conf.ecaade.2009.639
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. 639-648
summary Sounds, along with other senses, have a profound influence on our perception of the environment. The multi-modality of perceptual processing is influential in cognitive interpretation, semantic and aesthetic evaluations of environmental scenes. This paper describes an experimental case study using audio-augmented reality, carried out in order to better understand how sound influences sense of place. A correlation is established between soundscape and sense of place that depends on audio-visual congruence based on cultural, aesthetic and semantic factors. Subjective influences of soundscape on place experience are grouped and discussed under 5 areas that were possible to identify: Emotive and synaesthetic effects; effects on attention, gaze and behavior; effects on spatial orientation and sense of scale; influence of audio-visual congruence on sense of place; and perception of personal and social space.
wos WOS:000334282200077
keywords Augmented reality, soundscape, environmental perception, place theory, environmental acoustics
series eCAADe
type normal paper
email
last changed 2022/06/07 07:52

_id acadia21_546
id acadia21_546
authors King, Cyle; Gasper, Jacob
year 2021
title Process / Product
doi https://doi.org/10.52842/conf.acadia.2021.546
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. 546-553.
summary Academic papers are full of final drawings and diagrams but gloss over process work, “less glamorous” images, and the amount of time and labor behind a fi nal product. Certain skills and expertise cannot be taught but are instead collected from years of personal experience – a body of knowledge inaccessible to some unless passed on through e-mails, Zoom calls, or personal observations. When dealing with these seemingly esoteric topics, it becomes easy to feel isolated in the problems, failures, or questions that arise and cannot be easily accessed in academic journals or a simple Google search. Although exacerbated by the global pandemic’s mandates and shifts in the way work is done - this feeling is not new.

The following pages record clay 3D printing research on a KUKA industrial robotic arm completed by two 5th year undergraduate architecture students. Through drawings, images, and text, this field note documents decisions, failures, messes, and successes compiled from a year of socially distanced learning, researching, and living.

series ACADIA
type field note
email
last changed 2023/10/22 12:06

_id ecaade2022_122
id ecaade2022_122
authors Kinoshita, Airi, Fukuda, Tomohiro and Yabuki, Nobuyoshi
year 2022
title Enhanced Tracking Method with Object Detection for Mixed Reality in Outdoor Large Space
doi https://doi.org/10.52842/conf.ecaade.2022.2.457
source Pak, B, Wurzer, G and Stouffs, R (eds.), Co-creating the Future: Inclusion in and through Design - Proceedings of the 40th Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2022) - Volume 2, Ghent, 13-16 September 2022, pp. 457–466
summary Mixed-reality landscape simulation is one of the visual methods used in landscape design studies. A markerless tracking method using image processing has been proposed for properly aligning the real and virtual worlds involved with landscape simulations in large spaces. However, this method is challenging because tracking breaks down if a dynamic object is encountered during the mixed-reality execution. In this study, we integrated deep-learning object detection with natural feature-based tracking, which tracks manually defined feature points (tracking reference points), with the aim of reducing the impact of moving objects such as people and cars on mixed-reality tracking. The prototype system was implemented and tracking was performed on pre-recorded video taken outdoors. Performance was verified in terms of the number of errors associated with tracking the reference points and the accuracy of the mixed-reality display results (camera pose estimation results). Compared to the conventional system, our system was able to reduce the influence of moving objects that cause errors when tracking reference points. The accuracy of the camera pose estimation results was also verified to be improved. This research will contribute to developing mixed-reality simulation systems for large-scale spaces that are accessible to everyone, including users in the architectural field.
keywords Landscape Visualization, Mixed Reality, Object Detection, Tracking, Deep Learning
series eCAADe
email
last changed 2024/04/22 07:10

_id ecaadesigradi2019_339
id ecaadesigradi2019_339
authors Kinugawa, Hina and Takizawa, Atsushi
year 2019
title Deep Learning Model for Predicting Preference of Space by Estimating the Depth Information of Space using Omnidirectional Images
doi https://doi.org/10.52842/conf.ecaade.2019.2.061
source Sousa, JP, Xavier, JP and Castro Henriques, G (eds.), Architecture in the Age of the 4th Industrial Revolution - Proceedings of the 37th eCAADe and 23rd SIGraDi Conference - Volume 2, University of Porto, Porto, Portugal, 11-13 September 2019, pp. 61-68
summary In this study, we developed a method for generating omnidirectional depth images from corresponding omnidirectional RGB images of streetscapes by learning each pair of omnidirectional RGB and depth images created by computer graphics using pix2pix. Then, the models trained with different series of images shot under different site and weather conditions were applied to Google street view images to generate depth images. The validity of the generated depth images was then evaluated visually. In addition, we conducted experiments to evaluate Google street view images using multiple participants. We constructed a model that estimates the evaluation value of these images with and without the depth images using the learning-to-rank method with deep convolutional neural network. The results demonstrate the extent to which the generalization performance of the streetscape evaluation model changes depending on the presence or absence of depth images.
keywords Omnidirectional image; depth image; Unity; Google street view; pix2pix; RankNet
series eCAADeSIGraDi
email
last changed 2022/06/07 07:52

_id ijac202220303
id ijac202220303
authors Kirdar, Gulce; Gulen Cagdas
year 2022
title A decision support model to evaluate liveability in the context of urban vibrancy
source International Journal of Architectural Computing 2022, Vol. 20 - no. 3, pp. 528–552
summary Liveability can be accepted as an umbrella term covering all the factors that make a place to live. We recognize the versatility of urban liveability and focus on the vibrancy aspect. Regarding the literature, we compile variables affecting urban liveability under the economic, image, and use value of place. This article aims to present a data-driven decision support system to evaluate different dimensions of vibrancy-focused liveability. We adopt a knowledge discovery process to handle the complexity of the liveability concept. This study develops a conditional-based relationship network of vibrancy parameters through the Bayesian Belief Network (BBN). Then, we assess the BBN’s correlations with statistics and causal relations with the survey in this study.These results mostly agree with the findings of the relevant literature. The economic value results show that the high density, diversity and accessibility add a premium to the land value of properties. The use value results also demonstrate that the diversity and density of activities, cultural attributes, and high accessibility support place attractiveness. The selected streetscape variables improve image value, except for building enclosure and condition. The study has the potential for urban planners to vitalize neighborhoods by considering urban activities and urban physical attributes
keywords liveability, vibrancy, knowledge discovery process, big data, locative data, Bayesian belief network
series journal
last changed 2024/04/17 14:29

_id sigradi2021_144
id sigradi2021_144
authors Kirdar, Gülce and Çagdaº, Gülen
year 2021
title A Data-Driven Participatory Decision Model Proposal in the Context of Urban Vibrancy
source Gomez, P and Braida, F (eds.), Designing Possibilities - Proceedings of the XXV International Conference of the Ibero-American Society of Digital Graphics (SIGraDi 2021), Online, 8 - 12 November 2021, pp. 175–189
summary This paper focuses on the vibrancy of urban environments in the context of liveability. The objective is to explore the interrelationships of activity determinants what attracts visitors to support vibrancy decisions. The research questions how to uncover the relationships among vibrancy parameters and how to utilize the relation network for decision support. We utilize Bayesian Belief Network (BBN) for relational analysis and support with expert participation for an efficient decision-making. In this way, we expect to develop a causal by calibrating the data-driven BBN network. The results show that the user density has direct relationship with public open space, place rate, activity diversity, landmarks’ visitation rate cultural attributes, and accessibility; indirect relationship with time diversity, activity diversity and density. The results support the arguments on the importance of activity diversity in space and time, and intense urban pattern within the attractiveness public spaces for urbanity.
keywords Big data, data-driven analysis, urban livability, participatory approach, design decision making.
series SIGraDi
email
last changed 2022/05/23 12:10

_id 479b
authors Kirkby, S. D., Flint, R. Jacobs, S.R., Saunderson, C. and Bamford, E.
year 1996
title Interactive Urban Planning: The Adelaide Model Case Study
source AURISA '96: Australasian Urban and Regional Information Systems Association, Hobart, Australia, 25-29 November, Australasian Urban and Regional Information Systems Association, pp. 235-240
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 20:38

_id d52c
authors Kirkby, S. D., Jacobs, S.R. and Flint, R.
year 1996
title Using 3D GIS to Model Urban Planning Scenarios for the City of Adelaide
source Revitalising Town and City Centres, 8th International Malls Conference, Adelaide, Australia, 16-17 September, pp. 1-2
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 20:38

_id 3cd6
authors Kirkby, S. D., Pollitt, S.E.P., Eklund, P.W., Coulson, T. and Ratcliffe, S.
year 1996
title An Interactive 3D GIS Urban Planning Model
source 28th International Geographical Congress, The Hague, 4-10 August, pp. 4-10
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 20:38

_id acadia20_84
id acadia20_84
authors Kirova, Nikol; Markopoulou, Areti
year 2020
title Pedestrian Flow: Monitoring and Prediction
doi https://doi.org/10.52842/conf.acadia.2020.1.084
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. 84-93.
summary The worldwide lockdowns during the first wave of the COVID-19 pandemic had an immense effect on the public space. The events brought up an opportunity to redesign mobility plans, streets, and sidewalks, making cities more resilient and adaptable. This paper builds on previous research of the authors that focused on the development of a graphene-based sensing material system applied to a smart pavement and utilized to obtain pedestrian spatiotemporal data. The necessary steps for gradual integration of the material system within the urban fabric are introduced as milestones toward predictive modeling and dynamic mobility reconfiguration. Based on the capacity of the smart pavement, the current research presents how data acquired through an agent-based pedestrian simulation is used to gain insight into mobility patterns. A range of maps representing pedestrian density, flow, and distancing are generated to visualize the simulated behavioral patterns. The methodology is used to identify areas with high density and, thus, high risk of transmitting airborne diseases. The insights gained are used to identify streets where additional space for pedestrians is needed to allow safe use of the public space. It is proposed that this is done by creating a dynamic mobility plan where temporal pedestrianization takes place at certain times of the day with minimal disruption of road traffic. Although this paper focuses mainly on the agent-based pedestrian simulation, the method can be used with real-time data acquired by the sensing material system for informed decision-making following otherwise-unpredictable pedestrian behavior. Finally, the simulated data is used within a predictive modeling framework to identify further steps for each agent; this is used as a proof-of-concept through which more insights can be gained with additional exploration.
series ACADIA
type paper
email
last changed 2023/10/22 12:06

_id acadia23_v2_130
id acadia23_v2_130
authors Kirova, Nikol; Markopoulou, Areti; Bury, Jane; Latifi, Mehrnoush
year 2023
title Grading CharCrete: Embodied carbon optimization of load-bearing walls
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 130-139.
summary This paper presents a computational method for designing architectural elements using functionally graded (FG) cementitious materials to reduce embodied carbon and mass. Functionally graded materials (FGM), commonly found in nature, have a graded variation in their composition or properties, which can be tailored to specific structural requirements. The research utilizes three grades CharCrete (biochar-cementitious mortar) developed by the author as part of more extensive research on the applications of biochar, a type of carbon-sequestering material derived from biomass. Finite element method (FEM) is used to optimize the distribution of three grades according to structural requirements. By maximizing the quantity of biochar in the CharCrete mate- rial system, the method aims to minimize embodied carbon and mass while maintaining structural integrity. The method is implemented using FEM within the Grasshopper envi- ronment with the Karamba3D plug-in and demonstrated through a design case study on load-bearing walls, comparing homogeneous and FG material allocation. The results indicate that the proposed computational method effectively guides achieving a net-negative carbon footprint, while ensuring structural performance, and suggests that a heterogeneous material allocation with two grades of CharCrete is a sufficient carbon offsetting strategy. This approach showcases a promising pathway for the architectural industry to contribute to sustainable construction practices and mitigate environmental impact through the implementation of functionally graded cementitious materials.
series ACADIA
type paper
email
last changed 2024/12/20 09:12

_id 4eb7
authors Kirsch, Uri
year 1982
title Optimal Design of Continuous Prestressed Concrete Structures
source 25 p. : il. tables Pittsburgh, PA: Design Research Center, CMU, December, 1982. DRC-12-11-82. includes bibliography: p. 20-21
summary Optimal design of continuous prestressed systems is stated in a nonlinear programming form. The design variables are the concrete dimensions, tendon coordinates, and prestressing force. The constraints are related to various behavior and design requirements and the objective function represents the overall cost. Some simplified models, intended to improve the solution efficiency, are presented. These include: explicit formulations of the general problem and the problem of minimizing the concrete dimensions; linear programming formulation of the tendon configuration and prestressing force optimization; and direct determination of the prestressing force for given concrete dimensions and tendon coordinates. Some examples illustrate the various problem formulations and solution methodology
keywords engineering, structures, optimization, linear programming
series CADline
last changed 1999/02/12 15:08

_id c6e3
authors Kirsch, Uri
year 1982
title Approximation Concepts for Optimum Structural Design
source 25 p. Pittsburgh, PA: Design Research Center, CMU, December, 1982. DRC-12-12-82. includes bibliography
summary When elastic behavior is assumed, the optimum structural design problem is stated in an implicit nonlinear programming form. Approximate behavior models are introduced to obtain explicit constraint functions, essential in many practical design problems. For the displacement analysis formulation, some possible explicit approximations of the nodal displacements in terms of the design variables are reviewed. It is shown that any approximation of the displacements will lead to a solution which does not necessarily satisfy equilibrium. Methods for solving the approximate problem are discussed. Using the force analysis formulation, it is shown that explicit approximations of the redundant forces will lead to solutions which do not necessarily satisfy compatibility. Some simplified models of the explicit problem are presented and solution methods are discussed
keywords structures, design, engineering, optimization, civil engineering, approximation
series CADline
last changed 1999/02/12 15:08

_id 2005_091
id 2005_091
authors Kirschner, Ursula and Kirschner, Nauka
year 2005
title E-learning in Creative Planning Processes
doi https://doi.org/10.52842/conf.ecaade.2005.091
source Digital Design: The Quest for New Paradigms [23nd eCAADe Conference Proceedings / ISBN 0-9541183-3-2] Lisbon (Portugal) 21-24 September 2005, pp. 91-97
summary This conference paper examines experimental design exercises on a simulated model in relation to designing on a physical model. In the initial design phases, the process of designing on both a haptic and digital model is analysed with regard to the didactic objectives. In this context, only form-related aesthetic aspects are discussed. The starting point is the didactic necessity of imparting to students the process of designing on spatial models. Reduced to form determination, the question examined is for which aspects of design theory the potentials of real and virtual models, as well as of the interaction of both types, can be exploited.
keywords Design methods; Digital and Physical Models; 3D-Digizer; Design Education
series eCAADe
email
last changed 2022/06/07 07:52

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