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 ff8b
authors Krawczyk, Robert J.
year 1999
title Virtual Ornaments
doi https://doi.org/10.52842/conf.acadia.1999.x.m7d
source ACADIA Quarterly, vol. 18, no. 4, p. 19
summary A few years ago I began to investigate the concepts of art-to-part and single part custom manufacturing. The original designs had to created on a CAD system either manually or by algorithm and then machine produced without any manual intervention. Rapid prototyping and laser cutting technology were both reviewed and the later selected for possible use. I also had a long time interest in geometric design. At that time one of my CAD classes took some of there window designs, created from a complex series of overlapping circles, arcs, and splines, and had them laser cut. The results were astonishing.
series ACADIA
email
last changed 2022/06/07 07:49

_id 8e1e
authors Krawczyk, Robert J.
year 2002
title Experiments in Architectural Form Generation Using Cellular Automata
doi https://doi.org/10.52842/conf.ecaade.2002.552
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. 552-555
summary These experiments are based on previous work in developing cellular automata in three dimensions and to suggest architectural forms. Current research is extended by including explicit architectural considerations, such as, individual space units, supporting structure, floor plates, and the development of an envelope. A basic spatial shape is demonstrated in both linear and curved configurations. Also included is a discussion to not only explicitly use mathematically based concepts for form generation but more importantly their interpretation into architectural forms, as well as, the concept of considering architectural elements from the very start of the generative process.
series eCAADe
email
last changed 2022/06/07 07:51

_id ecaade2022_162
id ecaade2022_162
authors Kremer, Noemi, Bangratz, Martin, Beetz, Jakob and Förster, Agnes
year 2022
title GIS-Box Improving Data Literacy in Spatial Disciplines - Integrating spatial data modeling, processing and visualization in spatial study programs
doi https://doi.org/10.52842/conf.ecaade.2022.2.525
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. 525–534
summary Data modelling, processing, and visualization are crucial competencies for geospatial study programs. Students of different geospatial study programs need to be strengthened in the use and application of digital tools of spatial analysis and visualization within the digitization of teaching. This paper presents an approach on how digital tools for spatial analysis and visualization can be introduced into the curricula of architecture, urban planning and geography studies, strengthening the interdisciplinary exchange and students’ data literacy. As a result, an interdisciplinary methodological teaching format for spatial analysis, the "GIS-Box" is introduced. The GIS-Box is developed as a modular toolbox to provide material for collaborative and self-taught learning in different Master and Bachelor degree programs. It offers video lectures as well as practical tutorials, including an introduction to data modelling and programming, with the aim of improving students' data literacy. Students also learn to use QGIS to create maps for applied spatial research. In order to provide a uniform technical basis for teaching Python programming, Jupyter Notebooks are used. The integration of Jupyter Notebooks allows combining theoretical and practical programming content interactively. In this paper, we present the implementation of the class, statistically assess student results and experiences from teaching. In addition, positive and negative aspects of integrating GIS-Box with digital tools in teaching are discussed and further opportunities to improving data literacy in teaching are outlined.
keywords GIS-Box, Digital Tools, Spatial Analysis, Data Literacy, Teaching
series eCAADe
email
last changed 2024/04/22 07:10

_id ddssup0210
id ddssup0210
authors Krempi, A.P., Brondino, N.C.M. and Silva, A.N.R.
year 2002
title Evaluating Transportation Accessibility with Spatial Statistics Toolsin a GIS Environment
source Timmermans, Harry (Ed.), Sixth Design and Decision Support Systems in Architecture and Urban Planning - Part two: Urban Planning Proceedings Avegoor, the Netherlands), 2002
summary In several developing countries it is often assumed that low-income segments of the population living at the periphery of the cities are those affected the most by poor conditions of transportation accessibility. Inorder to gain a better understanding of the way transportation accessibility is distributed across different regions of an urban area, the main aim of this work is to analyze, making use of Spatial Statistics tools ina GIS (Geographical Information System) environment, the relationship between accessibility and geographical locations in a medium-sized Brazilian city. Data of an origin-destination (O-D) survey carried out in the city of Bauru, which brings information about four different transportation modes, were used in this study. Such data, grouped following the census tracts, were carefully examined in a Geographic Information System in order to look for spatial patterns of accessibility that are not visible inthe traditional approaches. One of the interesting outcomes of the application was the identification of regions with particular dynamics, which go against the pattern found in the overall urban area. This andother results of the case study clearly indicate that Spatial Statistics analyses in a GIS environment create a powerful tool to extend conventional transportation accessibility analysis.
series DDSS
last changed 2003/08/07 16:36

_id ecaade2013_067
id ecaade2013_067
authors Kretzer, Manuel
year 2013
title Information Materials
doi https://doi.org/10.52842/conf.ecaade.2013.1.615
source Stouffs, Rudi and Sariyildiz, Sevil (eds.), Computation and Performance – Proceedings of the 31st eCAADe Conference – Volume 1, Faculty of Architecture, Delft University of Technology, Delft, The Netherlands, 18-20 September 2013, pp. 615-623
summary This paper questions the current use of materials in architecture, which furthers the preference of surface and form over inherent material properties. It then investigates recent advancements towards the notion of a Digital Materiality, comparing various international research activities and approaches. It concludes with the potentials of Smart Materials for the creation of dynamic, adaptive spatial design. With a focus on the work of the Author it represents a number of projects that have been realized in this area within the past years and gives an insight in his recently established Materiability Research Network, a community platform that reveals Smart Materials, their properties and how to self-make them in an applied hands-on manner.
wos WOS:000340635300064
keywords Smart materials; digital materiality; open source; do-it-yourself; adaptive architecture.
series eCAADe
email
last changed 2022/06/07 07:51

_id acadia14_463
id acadia14_463
authors Kretzer, Manuel
year 2014
title Architecture in the Era of Accelerating Change
doi https://doi.org/10.52842/conf.acadia.2014.463
source ACADIA 14: Design Agency [Proceedings of the 34th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 9781926724478]Los Angeles 23-25 October, 2014), pp. 463-472
summary The present paper highlights the necessity for architecture to become more adaptive and emphasizes the potential of Smart Materials in that context. It elaborates upon an educational approach to provide access and understanding towards novel material developments and points out the need for cross-disciplinary collaboration.
keywords Smart Materials, Flexibility, Education, Open Source, Network, Cross-Disciplinarity, Interactive Architecture
series ACADIA
type Normal Paper
email
last changed 2022/06/07 07:51

_id acadia13_137
id acadia13_137
authors Kretzer, Manuel; In, Jessica; Letkemann, Joel; Jaskiewicz, Tomasz
year 2013
title Resinance: A (Smart) Material Ecology
doi https://doi.org/10.52842/conf.acadia.2013.137
source ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 137-146
summary What if we had materials that weren’t solid and static like traditional building materials are? What if these materials could dynamically change and adapt to varying environmental situations and stimulations and evolve and learn over time? What if they were autonomous, self-sufficient and independent but could communicate with each other and exchange information? What would this “living matter” mean for architecture and the way we perceive the built environment? This paper looks briefly at current concepts and investigations in regards to programmable matter that occupy various areas of architectural research. It then goes into detail in describing the most recent smart material installation “Resinance” that was supervised by Manuel Kretzer and Benjamin Dillenburger and realized by the 2012/13 Master of Advanced Studies class as part of the materiability research at the Chair for CAAD, ETH Zürich in March 2013. The highly speculative sculpture links approaches in generative design, digital fabrication, physical/ubiquitous computing, distributed networks, swarm behavior and agent-based communication with bioinspiration and organic simulation in a responsive entity that reacts to user input and adapts its behavior over time.
keywords Smart Materials; Distributed Networks; Digital Fabrication; Physical Computing; Responsive Environment
series ACADIA
type Normal Paper
email
last changed 2022/06/07 07:51

_id ecaade2018_230
id ecaade2018_230
authors Kreutzberg, Anette
year 2018
title Visualising Architectural Lighting Concept with 360° Panoramas
doi https://doi.org/10.52842/conf.ecaade.2018.2.745
source Kepczynska-Walczak, A, Bialkowski, S (eds.), Computing for a better tomorrow - Proceedings of the 36th eCAADe Conference - Volume 2, Lodz University of Technology, Lodz, Poland, 19-21 September 2018, pp. 745-752
summary This paper presents the establishment and refinement of a visualisation workflow based on initial learnings from introducing mobile Virtual Reality (VR) as representational medium for visualising and visually evaluating architectural lighting concepts using rendered 360° panoramas. Four student projects are described, each with a different aim and approach towards visualising architectural light in space: Two projects aiming at conveying reality with physically based lighting simulations and two projects with an artistic approach to conveying light impressions. The 360° panoramas were used at low resolution during the design process to qualify the projects, and the final panoramas were presented with great success as a supplement to visualisations, diagrams, technical drawings and physical models at Bachelor and Master exams. The benefits of using familiar simulation and render software together with low cost, accessible and portable VR HMD's in the authors opinion far outweighs the reduced Field of View, lower frame-rate, lack of parallax and dynamic Point of View compared to realtime rendered high end VR.
keywords Architectural lighting; 360° panorama; Virtual Reality; Visualisation workflow
series eCAADe
email
last changed 2022/06/07 07:51

_id caadria2022_344
id caadria2022_344
authors Krezlik, Adrian
year 2022
title Considering Energy, Materials and Health Factors in Architectural Design, Two Renovation Strategies for the Portuguese Building Stock
doi https://doi.org/10.52842/conf.caadria.2022.2.619
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. 619-628
summary According to the Intergovernmental Panel on Climate Change, the built environment has a significant share in global final energy use, greenhouse gases emission, land-system change, and biodiversity loss to list some indicators. In Europe, the biggest challenge is to regenerate existing building stock to create a positive impact on Nature. The Portuguese housing stock is old: 56% is more than 30 years old, and it has a low level of thermal comfort and energy efficiency. The first thermal regulations appeared in 1990 and therefore most of the houses need urgent renovation to meet EU decarbonization goals, and to improve energy efficiency, as well as well-being and comfort of residents. This paper presents a method that aims to verify existing solutions known from vernacular architecture as complementary to existing strategies. It employs digital simulation to verify whether they could be used for renovation, measuring their impact on human and planetary health. The paper shows that there is a wide spectrum of parameters that influence the renovation process and that it is possible to enhance building performance using vernacular knowledge.
keywords Building Energy Modelling, Life Cycle Assessment, Occupant Health, Energy Renovation, Vernacular Mimicry, SDG 3, SDG 11, SDG 13
series CAADRIA
email
last changed 2022/07/22 07:34

_id acadia13_253
id acadia13_253
authors Krieg, Oliver David; Menges, Achim
year 2013
title HygroSkin: A climate-responsive prototype project based on the elastic and hygroscopic properties of wood
doi https://doi.org/10.52842/conf.acadia.2013.023
source ACADIA 13: Adaptive Architecture [Proceedings of the 33rd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-926724-22-5] Cambridge 24-26 October, 2013), pp. 23-260
summary The paper presents current research into architectural potentials of robotic fabrication in wood construction based on elastically bent timber sheets with robotically fabricated finger joints. Current developments in computational design and digital fabrication propose an integrative design approach contrary to classical, hierarchical architectural design processes. Architecture related fields, such as material science, engineering and fabrication have been seen as separate disciplines in a linear design process since the Industrialization era. However, current research in computational design reveals the potentials of their integration and interconnection for the development of material-oriented and performance-based architectural design.In the first part, the paper discusses the potentials of robotic fabrication based on its extended design space. The robot’s high degree of kinematic freedom opens up the possibility of developing complex and highly performative mono-material connections for wood plate structures. In the second part, the integration of material behavior is presented. Through the development of robotically fabricated, curved finger joints, that interlock elastically bent plywood sheets, a bending-active construction system is being developed (Figure 1,Figure 2). In the third part, the system’s architectural application and related constructional performance is discussed.
keywords Robotic Fabrication; Finger Joints; Material Computation; Wood Construction; Computational Design
series ACADIA
type Normal Paper
email
last changed 2022/06/07 07:51

_id ijac201513101
id ijac201513101
authors Krietemeyer, Bess; Brandon Andow, Anna Dyson
year 2015
title A Computational Design Framework Supporting Human Interaction with Environmentally-Responsive Building Envelopes
source International Journal of Architectural Computing vol. 13 - no. 1, 1–24
summary Emerging materials present opportunities to fundamentally shift current expectations of dynamic building envelope functionality towards systems that can respond to occupant needs while meeting the energy demands of buildings. In order to assess the environmental, social, and architectural opportunities that are increasing with responsive building envelopes, new tools are needed to simulate their multi-performance capabilities. This paper describes a computational design framework to support human interaction with environmentally-responsive electroactive dynamic daylighting systems. The objective is to develop algorithms for variable solar control and visible transmittance that simultaneously address occupant preferences for visual effects and interaction. Results demonstrate that energy performance and user satisfaction are not mutually exclusive and can be co-optimized. The effectiveness and limitations of the computational framework in assessing strategies to balance environmental performance and human interaction are discussed. Conclusions present areas of ongoing work that integrate multi-user interactions and immersive visualization techniques with multiscalar energy modeling tools.
series journal
last changed 2019/05/24 09:55

_id acadiaregional2011_008
id acadiaregional2011_008
authors Krietemeyer,Elizabeth A.; Anna H. Dyson
year 2011
title Electropolymeric Technology for Dynamic Building Envelopes
doi https://doi.org/10.52842/conf.acadia.2011.x.s0s
source Parametricism (SPC) ACADIA Regional 2011 Conference Proceedings
summary Human health and energy problems associated with the lack of control of natural light in contemporary buildings have necessitated research into dynamic windows for energy efficient buildings. Existing dynamic glazing technologies have made limited progress towards greater energy performance for curtain wall systems because they are still unable to respond to dynamic solar conditions, fluctuating building demands, and a range of user preferences for visual comfort and individual control. Recent breakthroughs in the field of information display provide opportunities to transfer electropolymeric technology to building envelopes that can achieve geometric and spectral selectivity in concert with pattern variation within the façade. Integrating electroactive polymers within the surfaces of an insulated glazing unit (IGU) could dramatically improve the energy performance of windows while enabling user empowerment through the control of the visual quality of this micro-material assembly, in addition to allowing for the switchable patterning of information display. Using parametric modeling as a generative design and analysis tool, this paper examines the technical intricacies linking system variables with visual comfort, daylight quality, and pattern design of the proposed electropolymeric dynamic facade technology.
series ACADIA
last changed 2022/06/07 07:49

_id 4839
authors Kripac, Jiri
year 1985
title Classification of Edges and its Application in Determining Visibility
source Computer Aided Design. January/ February 1985. vol. 17: pp.30-36 : ill. includes bibliography
summary A new hidden-line algorithm is proposed for illustrating objects consisting of plane faces. The algorithm determines the degree of edge and classifies edges and faces into contoural and non-contoural. To reduce memory requirements, sequential files and sorting are used. The algorithm is particularly intended for illustrating complex objects, such as curved surfaces approximated by plane faces
keywords algorithms, hidden lines, curved surfaces, geometric modeling, computer graphics
series CADline
last changed 1999/02/12 15:08

_id b796
authors Krishnamurthy, B.K., Tserng, H.-P., Schmitt, R.L., Russell, J.S., Bahia, H.U. and Hanna, A.S.
year 1998
title AutoPave: towards an automated paving system for asphalt pavement compaction operations
source Automation in Construction 8 (2) (1998) pp. 165-180
summary Asphalt pavement density from roller compaction is a crucial factor in ensuring satisfactory pavement performance. Proper and uniform compaction of the pavement mat is essential in achieving the desired final compacted density. There is a necessity to investigate existing pavement construction practices, and provide more cost-effective modifications to the current scenario. Automation of the paving operation can increase the efficiency and quality of the operation, lead to reductions in overall project costs and time, and enhance pavement life. A system can be developed through algorithmic planning and real-time guidance strategies, and the development of a semi-automated path-planning and real-time guidance system that aims towards automating the paving operation. This system accepts relevant paving project inputs, generates appropriate path plans for the compactor, performs a graphical visualization of the generated path plan, and offers real-time guidance capabilities using Global Positioning Systems (GPS) technology. This system, named AUTOPAVE (v1.0), was developed in Microsoft Visual Basic™ programming language and offers a user-friendly and interactive graphical interface. The proposed new system will incorporate state-of-the-art GPS technology to standardize paving operations that are more amenable to rigorous quality control, and can result in considerable reductions in cost and time involved in asphalt pavement construction projects. This system was tested on several actual paving projects, and many operational issues related to the functioning of the system were successfully overcome.
series journal paper
more http://www.elsevier.com/locate/autcon
last changed 2003/05/15 21:22

_id b784
authors Krishnamurti, R. and Earl, C.F.
year 1992
title Shape recognition in three dimensions
source Environment and Planning B: Planning and Design 19 : 585-603
summary The subshape recognition problem for three-dimensional shapes under linear transformations is considered. The problem is analysed in a series of cases, some that provide a determinate number of solutions and others that have indeterminately many solutions. Procedures for its solution for general shapes are developed. Difficulties posed by strict adherence to rational transformations are examined. As a corollary, an outline of a procedure for determining the symmetries of a shape is presented. Subject
series journal paper
last changed 2003/04/23 15:14

_id cb3c
authors Krishnamurti, Ramesh and Stouffs, Rudi
year 1993
title Spatial Grammars: Motivation, Comparison, and New Results
source CAAD Futures ‘93 [Conference Proceedings / ISBN 0-444-89922-7] (Pittsburgh / USA), 1993, pp. 57-74
summary The paper starts by giving a motivation for studying grammars in design and is based on considerations of style, discovery, and constructive techniques. This paper goes on to survey a variety of spatial grammar formalisms from an implementation standpoint. For each formalism, the salient computational issues pertaining to rule application are discussed. Two aspects of shape grammars are considered in detail: (a) the conditions for reversibility of shape rules, and (b) the recognition of planar shapes.
keywords Spatial Grammars, Shape Rules, Shape Recognition
series CAAD Futures
email
last changed 2003/05/16 20:58

_id cee4
authors Kristianto, Mandau Apri
year 2003
title Performance Evaluation of 3D-Model CAAD Implementation in Dutch Architecture Firms
source South Bank University [In cooperation with Hogeschool van Arnhem en Nijmegen - The Netherlands]
summary The principal theme of this research is to provide information regarding the implementation of 3D Model CAAD, CAAD system which uses 3D Drawing Production Method (DPM) instead of 2D DPM This research is focused on its implementation in architecture firms and on justifies its performance and investment value. Principally there are two evaluations conducted in this research. First evaluation aimed to justify 3D-Model CAAD influence on design process and the second is investment evaluation which aimed to provide information for current and prospective user regarding their current and future investment on 3D-Model CAAD.

The results of the evaluations are: 3D Model CAAD has improved performance through efficiency on time and cost of design process also improvement on design quality. However correlation between the use of 3D-Model C.4AD and better performance, while tested using Chi-Square Test, is not significantly. This fact indicates that there are some other strong factors to influence design performance. Second, 3D-Model CAAD, according the Importance-Performance Map is positioned at top right quadrant which categorised as 'keep the good work' which means it has good investment value.

keywords Evaluation; Performance; 3D-Modeling C.4AD; Investment; Drawing Production Method
series thesis:MSc
email
last changed 2003/06/09 09:28

_id caadria2024_318
id caadria2024_318
authors Krncevic, Monika, Arjaghi, Niousha, Makki, Mohammed and Jordan, Mathers
year 2024
title Re-imagining The Urban Development of Western Sydney: The Case Study of Oran Park
doi https://doi.org/10.52842/conf.caadria.2024.1.353
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. 353–362
summary This paper addresses the challenges of rapid urban expansion in Western Sydney, Australia, using the suburb of Oran Park as a case study. With the region's population projected to more than double by 2041, and an expected influx of an additional 400,000 people by 2030, there is a pressing need for sustainable and environmentally responsive urban development. Current approaches have prioritised space utilisation over environmental and social considerations, leading to homogeneity and poor urban quality. In response to these challenges, this study proposes a four-stage generative model for Oran Park, emphasising environmental restoration, agricultural integration, and housing diversification. This model aims to balance economic growth with environmental sustainability, contrasting with the density-focused development prevalent in the area. By implementing multi-objective optimisation, this research presents an algorithm-driven approach to urban planning, catering to the diverse needs of the expanding population.
keywords Sydney, Oran Park, Evolutionary Computation, Generative Algorithm, Urban
series CAADRIA
email
last changed 2024/11/17 22:05

_id ecaade2021_218
id ecaade2021_218
authors Krnjaic, Aleksandar and Jovanovic, Marko
year 2021
title Iris Diaphragm Mechanism Application for Daylighting Control
doi https://doi.org/10.52842/conf.ecaade.2021.1.505
source Stojakovic, V and Tepavcevic, B (eds.), Towards a new, configurable architecture - Proceedings of the 39th eCAADe Conference - Volume 1, University of Novi Sad, Novi Sad, Serbia, 8-10 September 2021, pp. 505-514
summary Daylight is an important factor in interior design. The benefits can be seen in reduced need for heating and artificial lighting, while the caveats are visual hindrance, glare, thermal discomfort and increased energy for cooling. The industry standard way of controlling daylighting is with roller blinds, venetian blinds, curtains, static and automated façades which do not allow sufficient control over daylight. The aim of this paper is to explore the potential of using circular modules with the iris diaphragm mechanism as a system for controlling the daylight amount, similar to the approach used on Arab World Institute. Circular module that are proposed in the paper consists of an outer casing, inner rotational and stationary rings and blades. A parametric iris model is generated and optimized to conform to the criteria of having the smallest casing, thinnest blades and the least amount of blades to decrease fabrication and assembly time. The circular module is applied in three layouts on a rectangular opening to calculate the efficiency in daylighting control. Obtained results show significant increase in systems flexibility and performance compared to the closest implementation in the south façade of the Arab World Institute.
keywords iris diaphragm; daylight; shading system; daylight control
series eCAADe
email
last changed 2022/06/07 07:52

_id ecaade2018_178
id ecaade2018_178
authors Kroc, Tomasz and Walczak, Bartosz M.
year 2018
title GIS Technologies Implementation Based on The EU Directive Inspire - A case study of the Pabianice city
doi https://doi.org/10.52842/conf.ecaade.2018.1.489
source Kepczynska-Walczak, A, Bialkowski, S (eds.), Computing for a better tomorrow - Proceedings of the 36th eCAADe Conference - Volume 1, Lodz University of Technology, Lodz, Poland, 19-21 September 2018, pp. 489-496
summary This paper presents the experience of implementating GIS technologies at a county town urban planning department. The necessity to implement GIS technology is partly dictated by the requirements of the INSPIRE Directive. The discussed case provides valuable information about the problems and challenges that cities have in Poland, while performing their obligations under the directive. The process of preparing the necessary geographical database corresponding to existing planning documents raises many legal and technical problems. The presented case illustrates the whole process associated with the preparation of digitization and publication of urban plans. At the same time, it is worth to see the numerous benefits that the city obtains after publishing GIS data. Attention should also be paid to the further development of GIS and the chances of their use, especially in urban centers.
keywords INSPIRE; GIS technologies implementation; urban planning; sharing geographic dates
series eCAADe
email
last changed 2022/06/07 07:52

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