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 e414
authors Lee, H.-L.
year 2002
title A Preliminary Study of Computerized Design Process and Methods
source Connecting the Real and the Virtual - design e-ducation [20th eCAADe Conference Proceedings / ISBN 0-9541183-0-8] Warsaw (Poland) 18-20 September 2002, pp. 290-295
doi https://doi.org/10.52842/conf.ecaade.2002.290
summary Graduate Institute of Architecture, National Chiao Tung University, Hsinchu 30050, Taiwan The evolution of design media has kept a close relationship with the development of design methods in the history. Nowadays, different computer media have been used in different stages of the design process. It is to believe that computer media have great impact on the design process and methods. The objective of this paper is to realize the design process and methods when designers use computer modeling to tackle an architectural design problem. The methodologies are non- participant observation and retrospection. The findings of this research prove that media does contribute to the changes in design process and methods. Not only does its conclusion help to better understand properties of different media, but also benefit the development of computer media.
series eCAADe
email
last changed 2022/06/07 07:51

_id caadria2020_047
id caadria2020_047
authors Lee, Han Jie, Lin, Zhuoli, Zhang, Ji and Janssen, Patrick
year 2020
title Irradiance Mappinig for Large Scale City Models
source D. Holzer, W. Nakapan, A. Globa, I. Koh (eds.), RE: Anthropocene, Design in the Age of Humans - Proceedings of the 25th CAADRIA Conference - Volume 1, Chulalongkorn University, Bangkok, Thailand, 5-6 August 2020, pp. 803-812
doi https://doi.org/10.52842/conf.caadria.2020.1.803
summary This paper reports on the development of a geocomputational simulation workflow for the irradiance mapping of large scale city models. A fully automated workflow is presented, for importing CityGML city models, generating the simulation input models, executing the simulations, and aggregating the results. In order to speed up the overall processing time, the workflow uses parallel processing across multiple computers and multiple cores. Two case studies are presented, for Singapore and for Rotterdam.
keywords Integrated irradiance simulation; Solar potential assessment ; Large scale urban 3D model; Houdini; Radiance
series CAADRIA
email
last changed 2022/06/07 07:51

_id e2ea
authors Lee, Hwa-Ryong
year 1999
title The Changing Face of Architectural Computing Research
source Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 11-17
doi https://doi.org/10.52842/conf.ecaade.1999.011
summary This paper examines the existing commercial and on-going research computer applications for architectural design. It investigates their uses, predictions and limitations; and reviews the teleology, technologies and theories exploited for computerising design. Finally, I will discuss two trends in the developments of CAAD, and present the new directions in CAAD research. This study will be based on understanding the computer's roles in designing, and further on establishing a new theoretical paradigm for mediating a computer system.
keywords Historical Context, Theoretical Paradigms
series eCAADe
email
last changed 2022/06/07 07:51

_id caadria2017_095
id caadria2017_095
authors Lee, Hyo Jung and Lee, Hyunsoo
year 2017
title Automatic 3D Modeling of Korean Traditional Architecture - Applying Parametric Design
source P. Janssen, P. Loh, A. Raonic, M. A. Schnabel (eds.), Protocols, Flows, and Glitches - Proceedings of the 22nd CAADRIA Conference, Xi'an Jiaotong-Liverpool University, Suzhou, China, 5-8 April 2017, pp. 231-240
doi https://doi.org/10.52842/conf.caadria.2017.231
summary Korean traditional structure is constructed as prefabrication jointed in largely characterized by its unique components under the specific rules of assembly and proportion. This point is a double-edges sword. Because, while various shapes and sizes of components based upon an objected-oriented form appear the potential possibility of producing changeable prototypes to build up, these various characters of components and several jointed methods has made difficulties to handle. Accordingly, an automatic 3D modeling algorithm is focused on the methodology of changeable prototypes of Korean Traditional architecture keeping traditional jointed methods with setting various characters of components
keywords Korean traditional structure; Parametric design ; Generative three dimensional modeling ; Hanok.
series CAADRIA
email
last changed 2022/06/07 07:51

_id caadria2004_0
id caadria2004_0
authors Lee, Hyun Soo and Choi, Jin Won (Eds.)
year 2004
title CAADRIA 2004
source Proceedings of the 9th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 89-7141-648-3 / Seoul (Korea) 28-30 April 2004, 983 p.
doi https://doi.org/10.52842/conf.caadria.2004
summary Having as topic for the conference the tile with keywords such as culture, technology, and architecture, we were expecting to find out the relationships among those three domains, and how they are interrelated in this fast growing information society. This triangular relationship has been established based on the increasingly noticeable paradigm shift from traditional computer-aided design research in architecture to research in diverse areas such as virtual environments and communities and interactive smart spaces, including the consideration of sociocultural aspects along with the technological issues. Making virtual environments focuses on creating a new, yet virtual world where people can inhabit or visit for diverse purposes. The virtual architecture becomes a medium for diverse communications as well as digital contents for the new media industry. For example, virtual heritage projects introduce a new way of preserving historic buildings and sites. At the same time, interactive smart spaces often combine two different worlds: real and virtual worlds. Growing digital technologies enables us to create intelligent physical spaces where computers are ubiquitous and invisible in space, and thus human beings can interact with architectural spaces, not necessarily with computers directly. At this point, issues on virtual reality (VR) and human computer interactions (HCI) become architects' and designers' concerns in socio-cultural aspects. The proceedings of the Nineth International Conference on Computer-Aided Architectural Design Research in Asia, presents 74 papers which were selected from the 131 submissions through a blind review of 58 international reviewers. Each submission was reviewed by three reviewers and the final acceptance was based on their recommendations.
series CAADRIA
more www.caadria.org
last changed 2022/06/07 07:49

_id caadria2014_530
id caadria2014_530
authors Lee, Hyunsoo; Minkyeong Shim, Heuiwon Yoon and Jungeun Lee
year 2014
title A Customized Smart Control of the Ubiquitous House
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. 971–972
doi https://doi.org/10.52842/conf.caadria.2014.971
series CAADRIA
type poster
email
last changed 2022/06/07 07:51

_id ddss2004_ra-113
id ddss2004_ra-113
authors Lee, J.-H. and W. Qian
year 2004
title Color Your Feeling
source Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) Recent Advances in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Kluwer Academic Publishers, ISBN: 1-4020-2408-8, p. 113-125
summary Color selection plays a vitally important role in creating impressions of individuals or companies because colors have sensibility aspects and relate to some images or associations. Based on both the theory of color harmony and the sensibility ergonomics, some quantitative and systematic researches on the color image have been developed. In this paper, we suggest a color coordinate system that supports the color analysis and the color harmony functions using color images, which can be captured by corresponding adjective words. We focus on a system prototype for interior design domain to exemplify our concepts in this paper, even though this system can be applied for all design domains.
keywords Design Support System, Sensibility Ergonomics, Color Coordination, Color Image
series DDSS
last changed 2004/07/03 22:13

_id ijac20064102
id ijac20064102
authors Lee, Jackie Chia-Hsun; Hu, Yuchang; Selker, Ted
year 2006
title iSphere:A free-hand 3D modeling interface
source International Journal of Architectural Computing vol. 4 - no. 1, 19-31
summary Making 3D models should be an easy and intuitive task like free-hand sketching. This paper presents iSphere, a 24 degree of freedom 3D input device. iSphere is a dodecahedron embedded with 12 capacitive sensors for pulling-out and pressing-in manipulation on 12 control points of 3D geometries. It exhibits a conceptual 3D modeling approach for saving mental loads of low-level commands. Using analog inputs of 3D manipulation, designers are able to have high-level modeling concepts like pushing or pulling 3D surfaces. Our experiment shows that iSphere saved steps in the selection of control points in the review of menus and leading to a clearer focus on what to build instead of how to build it. Novices saved significant time learning 3D manipulation by using iSphere to making conceptual models. However, one tradeoff of the iSphere is its lack of fidelity in its analog input mechanism.
keywords 3D Input Device; Proximity Sensing; Parametric Modeling; Human-Computer Interaction
series journal
email
more http://www.ingentaconnect.com/content/mscp/ijac/2006/00000004/00000001/art00003
last changed 2007/03/04 07:08

_id caadria2019_362
id caadria2019_362
authors Lee, Jaejong, Ikeda, Yasushi and Hotta, Kensuke
year 2019
title Comparative Evaluation of Viewing Elements by Visibility Heat Map of 3D Isovist - Urban planning experiment for Shinkiba in Tokyo Bay
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. 341-350
doi https://doi.org/10.52842/conf.caadria.2019.1.341
summary This paper presents a visibility analysis for 3D urban environments and its possible applications for urban design. This multi-view visibility analysis tool was generated by 3D isovist in Grasshopper, Rhino. The advantage of this analysis tool is that it can be compared within the measurement area. In addition, setting a visual object different from the existing isovist. The visual object is a landmark of a city space, such as landscape or object. First, the application experimented on the relevance between the calculation time and precision by this analysis tool. Based on the results of this experiment, it applied it to an actual part of an urban space. The multi-view visibility includes confirming the possibility of a comprehensive evaluation on the urban redevelopment and change of the view caused by the building layout plan - by numerical analysis showing the visual characteristics of the area while using 3D isovist theory. The practically applied area is Shinkiba, which is a part of Tokyo's landfill site; and while using the calculated data, multi-view visibility of each plan in the simulation of the visibility map is compared and evaluated.
keywords 3D isovist; Multi-view visibility; Comprehensive integration visibility evaluation; Urban redevelopment; Algorithmic urban design
series CAADRIA
email
last changed 2022/06/07 07:51

_id 757b
authors Lee, Jaemin and Akleman, Ergun
year 2002
title Practical Image Based Lighting
source Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 279-288
doi https://doi.org/10.52842/conf.acadia.2002.279
summary In this paper, we present a user-friendly and practical method for seamless integration of computergeneratedimages (CG) with real photographs and video. In general, such seamless integration isextremely difficult and requires recovery of real-world information to simulate the same environment forboth CG and real objects. This real-world information includes camera positions and parameters,shapes, material properties, and motion of real objects. Among these, one of the most important islighting.Image-based lighting that is developed to recover illumination information of the real world fromphotographs has recently become popular in computer graphics. In this paper we present a practicalimage-based lighting method that is based on a simple and easily constructable device: a square platewith a cylindrical stick. We have developed a user-guided system to approximately recover illuminationinformation (i.e. orientations, colors, and intensities of light sources) from a photograph of this device.Our approach also helps to recover surface colors of real objects based on reconstructed lightinginformation.
series ACADIA
email
last changed 2022/06/07 07:51

_id acadia05_142
id acadia05_142
authors Lee, Jaewook and Kalay, Yehuda E.
year 2005
title Collaborative Design Approach to Intelligent Environments
source Smart Architecture: Integration of Digital and Building Technologies [Proceedings of the 2005 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 0-9772832-0-8] Savannah (Georgia) 13-16 October 2005, pp. 142-155
doi https://doi.org/10.52842/conf.acadia.2005.142
summary Intelligent environments are buildings and other settings that can recognize the changing needs of their users and/or the changing nature of their context, and respond to them by adjusting some key environmental parameters (temperature, light, sound, furnishings, etc.). Unlike the currently common approach, which is based on systems theory (i.e., adjusting the parameters of the environment to match some pre-defined use profile), the approach proposed in this paper is based on dynamic, collaborative design: it views the (built) environment as comprised of multiple independent object-agents, each of which is responsible for one small aspect of the environment. Each can sense the immediate changes pertaining to its domain of responsibility, and propose corrective measures, which are negotiated with other agents to form a collective response. The paper hypothesizes that such an approach can be made more context-sensitive and dynamic, is easily scaleable, and can respond to the needs of multiple different users of the environment at the same time. The paper presents the rationale for developing the multi-agent approach, its hypothetical implementation, and its application to hypothetical case studies.
series ACADIA
email
last changed 2022/06/07 07:52

_id caadria2016_621
id caadria2016_621
authors Lee, Ji Ho and Ji-Hyun Lee
year 2016
title Cultural Difference in Colour Usages for Building Exteriors Focusing on Theme Park Buildings
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. 621-630
doi https://doi.org/10.52842/conf.caadria.2016.621
summary The notion of globalisation has become widely spread in various fields, and accordingly, it is increasingly more important to take account of indigenous culture characteristics in each field. An as- pect of achieving globalisation, globalization with local consideration, is to consider the difference of colour usage between distinct cultures. This study suggests an approach to investigate the colour difference between eastern and western cultures with the case analysis of build- ing fac?ade colours in Disneyland Paris and Tokyo Disneyland. We an- alysed cultural colour usage characteristics and derived tendencies for both Paris and Tokyo Disneyland building fac?ade colours. To do this, we use image based k-means clustering algorithm and CIELAB colour space distances to explore colour characteristics. Our analysis indi- cates an overall colour usage tendency that Paris uses more green and bluish colours and Tokyo uses more red and yellowish colours for building fac?ades, based on CIELAB colour space values. The major motivation of this paper was to reflect the atmosphere and the mood of the space that can be easily felt but not readily expressible into a cultural colour palette. Eventually, by finding the characteristics of perceived colours, we hope to create a colour recommendation system for different cultures based on cultural clues.
keywords Culture; colour usage; colour clustering; building fac?ade; computational approach
series CAADRIA
email
last changed 2022/06/07 07:51

_id 2006_244
id 2006_244
authors Lee, Ji-Hyun and Shu-Feng Pan
year 2006
title eCAADe: An Educational Commendation Mechanism for the Adaptive Semantic Web to Use in the Architectural Design Environment
source Communicating Space(s) [24th eCAADe Conference Proceedings / ISBN 0-9541183-5-9] Volos (Greece) 6-9 September 2006, pp. 244-251
doi https://doi.org/10.52842/conf.ecaade.2006.244
summary The “Case Studies in Architecture” phase of a course in architectural design includes in-depth comparisons and analyses of architectural precedents. However, with the large number of cases now readily available, Web searching and navigation is a time-consuming, low precision activity. In the work described in this paper, we built eCAADe, an educational commendation system for the adaptive semantic Web to allow students to query and retrieve semantically for architectural cases during the case study phase of an architectural design process. In our suggested system, we built a Semantic Web for design knowledge representation to make query and retrieval efficient. We also applied a hybrid recommendation mechanism, which is combining both content-based filtering and collaborative filtering to help for students to find relevant cases more efficient and precise with their preferences. We illustrate our concepts with several concrete examples.
keywords Recommendation mechanism; adaptive; semantic Web; architectural cases; ontology
series eCAADe
email
last changed 2022/06/07 07:51

_id caadria2010_002
id caadria2010_002
authors Lee, Ji-Hyun; Hyoung-June Park, Sungwoo Lim, Sun-Joong Kim, Haelee Jung and Mark Whiting
year 2010
title A formal approach for the interpretation of cultural content(s): evolution of a Korean traditional pattern, Bosangwhamun
source Proceedings of the 15th International Conference on Computer Aided Architectural Design Research in Asia / Hong Kong 7-10 April 2010, pp. 19-28
doi https://doi.org/10.52842/conf.caadria.2010.019
summary This paper develops a formal approach to investigate the evolution of a Korean traditional pattern, Bosangwhamun. The approach employs the structure of symbolic memes embedded in the pattern as a framework of hierarchical decomposition of a pattern to describe an evolutionary development process of a given pattern with a set of rules in shape grammar as style changes. Further, the formal descriptions of the given pattern become the basis for generating its variations. With this process, the validity of the rules and their appropriateness in the representation of Bosangwhamun are examined.
keywords Culture; memes; shape grammar; hierarchical decomposition; Korean traditional patterns
series CAADRIA
type normal paper
email
last changed 2022/06/07 07:51

_id caadria2007_645
id caadria2007_645
authors Lee, Ji-Hyun; Tian-Chiu Li
year 2007
title Fuzzy-Based Direct Manipulation: Focused on User Participation in Apartment Plan Design Process
source CAADRIA 2007 [Proceedings of the 12th International Conference on Computer Aided Architectural Design Research in Asia] Nanjing (China) 19-21 April 2007
doi https://doi.org/10.52842/conf.caadria.2007.x.c0b
summary Physically-based manipulation can be recognized as a promising approach to implement interactive computational tools to solve the user participation problems. To support the designer’s justifications as well as to clarify the innately ambiguous expressions provided by the clients, we propose to build a fuzzy-based expert system integrated with a 3D physically based manipulation. This paper focuses on a system prototype for the client customization process in apartment plan design to exemplify our concepts.
series CAADRIA
email
last changed 2022/06/07 07:50

_id ecaade2023_152
id ecaade2023_152
authors Lee, Jin and Hong, Seung Wan
year 2023
title Developing the Reinforcement-Learning Child Agents for Measuring Play and Learning Performance in Kindergarten Design
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 1, Graz, 20-22 September 2023, pp. 69–78
doi https://doi.org/10.52842/conf.ecaade.2023.1.069
summary Although kindergarten design requires promoting play behaviours related to physical and social development and ensuring safety of children to support a child-oriented design, the systemic evaluation of design performance remains challenging because of the children’s dynamic play behaviours. As one solution, agent-based simulations have been applied in the design field, but there are limitations in reflecting children’s behavioural richness. To overcome this shortcoming, this study developed reinforcement learning (RL) child agents to compute the dynamic play behaviours associated with physical and social development. Several iterations were conducted to implement the RL agents’ play behaviours, and the results were incorporated into the simulation. To validate the play behaviour model, we conducted a case analysis with authentic and unbuilt kindergarten designs and measured the quantifiable design performance in terms of physical and social play behaviours and safety. The results indicated that the RL child agents enabled a holistic analysis and the calculation of generative behavioural responses, depending on physical variations. By facilitating an unknown design affordance, the RL-powered simulation model is expected to provide data-driven evidence to support a child-oriented design.
keywords Agent-based simulation, Reinforcement-learning agent, Children's play behaviour model, Quantifiable design performance, Child-oriented learning environment
series eCAADe
email
last changed 2023/12/10 10:49

_id caadria2014_531
id caadria2014_531
authors Lee, Jin-Kook; Minkyu Shin, Jisoo Kim, Hyunsoo Lee and Gyuyeob Jeon
year 2014
title Visualization of Building Energy Consumption Data near Subway Stations
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. 973–974
doi https://doi.org/10.52842/conf.caadria.2014.973
series CAADRIA
type poster
email
last changed 2022/06/07 07:51

_id caadria2018_281
id caadria2018_281
authors Lee, Jisun and Lee, Hyunsoo
year 2018
title Pneumatic Skin with Adaptive Openings - Adaptive Façade with Opening Control Integrated with CFD for Natural Ventilation
source T. Fukuda, W. Huang, P. Janssen, K. Crolla, S. Alhadidi (eds.), Learning, Adapting and Prototyping - Proceedings of the 23rd CAADRIA Conference - Volume 2, Tsinghua University, Beijing, China, 17-19 May 2018, pp. 143-151
doi https://doi.org/10.52842/conf.caadria.2018.2.143
summary The unique integration of geometries and techniques allows the natural organisms to adapt to different environments in creative ways. In this study, a bio-inspired pneumatic facade is presented as a strategy to improve the efficiency of natural ventilation performance by controlling the adaptive openings. The Computational Fluid Dynamics simulation has been conducted to visualize airflows in order to explore how the changing configurations of openings enhance natural ventilation efficiency. The airflows are investigated with changes in wind speed and direction to find out the opening configurations which provide indoor airflows at the comfort level of velocities. As results, it was shown that indoor air velocities were modulated by controlling opening sizes, geometries and positions of the openings, and it was a beneficial strategy to apply the optimized opening configurations implementing automatic control. Also, the air distribution can be enhanced by changing opening configurations in changing conditions of wind speed and direction. An effective methodology for an intelligent façade opening control to encourage natural ventilation is presented in this study to deliver users comfort and efficiency.
keywords Natural ventilation; airflow simulation; pneumatic facade; Computational Fluid Dynamics
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2018_293
id caadria2018_293
authors Lee, Jisun and Lee, Hyunsoo
year 2018
title The Visible and Invisible Network of a Self-Organizing Town - Agent-Based Simulation for Investigating Urban Development Process
source T. Fukuda, W. Huang, P. Janssen, K. Crolla, S. Alhadidi (eds.), Learning, Adapting and Prototyping - Proceedings of the 23rd CAADRIA Conference - Volume 2, Tsinghua University, Beijing, China, 17-19 May 2018, pp. 411-420
doi https://doi.org/10.52842/conf.caadria.2018.2.411
summary This study applies self-organization as a methodology to understand the complex process of city networks caused by interactions between spatial structures and individual behaviors. The agent-based simulations have been conducted to investigate the visible and invisible networks understanding the self-organized aspects of city development processes. To develop optimal future networks providing connectivity and accessibility this study investigates spatial network configurations from internal individual behavior and movement. As results, it was found that the spatial configurations of the agent movement trails match to the current district boundaries and the similar network patterns were seen in various control values of agent behavior settings. This study contributes to searching out the hierarchy of network structures which is an important factor for re-planning of the way system.
keywords Agent-based simulation; network analysis ; self organization ; urban development process ; Physarum polycephalum
series CAADRIA
email
last changed 2022/06/07 07:52

_id caadria2019_426
id caadria2019_426
authors Lee, Jisun and Lee, Hyunsoo
year 2019
title Agent-driven Accessibility and Visibility Analysis in Nursing Units
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. 351-360
doi https://doi.org/10.52842/conf.caadria.2019.1.351
summary This study investigates the nursing unit design for care quality and efficient operation, evaluating visibility and walking distance of nurses in the different form of layout. Sufficient visibility from nurses' station to patient rooms and corridors can increase nurses' care abilities to understand the needs and movements of patients. The workload and time caused by nurse's walking can be diverted to patient care. Isovist analysis and agent-based simulation are experimented to investigate the effects of spatial layout on visibility and nurses' accessibility to patients. In the isovist analysis, the nurses' station facing patient rooms were more effective in nurse-to-patient visibility. In the nurse's walking trail analysis, uneven walking distance of each nurse appeared due to the asymmetric patient room layout centering the nurses' station and heavy room allocation plan. Understanding the potential impacts of design parameters enables designers to predict possible behaviors in each design alternative and to make effective and efficient design decisions for the occupants. This study underlines the role of the physical environment in the delivery of patient care and nurse's well-being. It presents an evaluation framework integrating syntactic analysis and agent-based simulation to predict the effect of the spatial layouts on the hospital activities.
keywords Nursing unit design; Isovists; Agent-based modeling; Accessibility; Visibility
series CAADRIA
email
last changed 2022/06/07 07:52

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