Research

Last updated: 31 December 2022

Publication

Journal Paper

1. K. Sriamorn, S. Sriswasdi and S. Chaidee (2023). The Non-Existence of Convex Configuration for a Given Set of Radii in Two-Dimensional Space. Carpathian Journal of Mathematics, 39:2, pp. 491-510 [DOI:10.37193/CJM.2023.02.11]
2. K. Chaichana, A. Kitro, S. Chaidee and T. Rojsiraphisal (2021), The potential effects of temperature on outpatient visits: a case study in Chiang Mai, Thailand, Environmental Science and Pollution Research, 28, pp 64431–64439 (2020IF 4.223) [DOI:10.1007/s11356-021-15512-y]
3. V. Suppakitpaisarn, A. Ariyarit & S. Chaidee (2021), A Voronoi-based method for land-use optimization using semidefinite programming and gradient descent algorithm, International Journal of Geographical Information Science, 35:5, 999-1031 (2019IF 3.733 ) [DOI: 10.1080/13658816.2020.1841203]
4. S. Chaidee and K. Sugihara (2020), The Existence of a Convex Polyhedron with Respect to the Constrained Vertex Norms. Mathematics 2020, 8, 645. (2018IF 1.105) [DOI:10.3390/math8040645]
5. S. Chaidee and K. Sugihara (2020), Laguerre Voronoi Diagram as a Model for Generating the Tessellation Patterns on the Sphere, Graphs and Combinatorics,  36, pp 371–385 (2018IF 0.481) [DOI:10.1007/s00373-019-02006-5]
6. S. Chaidee and K. Sugihara (2018), Spherical Laguerre Voronoi Diagram Approximation to Tessellations without Generators, Graphical Models 95, pp. 1 – 13 (2016IF 1.188) [DOI:10.1016/j.gmod.2017.11.002]
7. S. Chaidee and W. Wichiramala (2016), Optimal Partitioning of a Square : Numerical Approach, ScienceAsia 42:2, pp. 150 – 157  (2016IF 0.343) [DOI 10.2306/scienceasia1513-1874.2016.42.150]
8. S. Chaidee and K. Sugihara (2015), Numerical Fitting of Planar Photographic Image with Spherical Voronoi Diagrams, Computer Aided Drafting, Design and Manufacturing (CADDM) 25:4, pp. 26-31. [This paper is invited paper from AFGS conference.]
9. S. Chaidee and K. Sugihara (2017), Approximation of Fruit Skin Patterns Using Spherical Voronoi Diagram, Pattern Analysis and Applications, 20:3, pp. 783–795 (2016IF 1.352) [DOI 10.1007/s10044-016-0534-2]

Reviewed Proceeding (International Conference)

1. C. Sawatdithep and S. Chaidee (2023). Recognition of Archimedean Spiral Voronoi Diagrams from Linear Parastichies. L.-Y. Cheng (Ed.): ICGG 2022, LNDECT 146, pp. 441–453, Springer, 2023. [DOI:10.1007/978-3-031-13588-0_38]
2. S. Chaidee, P. Pakawanwong, V. Suppakitpaisarn, P. Teerasawat (2017), Interactive Land-Use Optimization Using Laguerre  Voronoi Diagram with Dynamic Generating Point Allocation, The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XLII-2/W7, 2017 (ISPRS Geospatial Week 2017),  pp. 1091-1098. [DOI:10.5194/isprs-archives-XLII-2-W7-1091-2017]
3. S. Chaidee and K. Sugihara (2016),Fitting Spherical Laguerre Voronoi Diagrams to Real World Tessellations Using Planar Photographic Images, J. Akiyama et al. (eds.): Discrete and Computational Geometry and Graphs (LNCS 9943), Springer, 2016, pp. 73-84. [DOI:10.1007/978-3-319-48532-4_7]
4. S. Chaidee and K. Sugihara (2015), Numerical Fitting of Planar Photographic Image with Spherical Voronoi Diagrams, In Proc. of the 10th Asian Forum on Graphic Science (2015).

Reviewed Proceeding (Domestic Conference)

1. W. Chaipunya and S. Chaidee. Development of the Mastery Learning Self-study Package on Geometry for Upper Secondary Students by Comparing Classical and Analytical Geometry Concepts. In Proc. of the Thailand 26th Annual Meeting in Mathematics (2022), 397-411. (in Thai language)
2. S. Chaidee and W. Wichiramala (2013), Numerical Approach to the Optimal Partitioning of a Square Problem, In Proc. of the Thailand 18th Annual Meeting in Mathematics (2013), 199-206.

Papers in Processes

• S. Chaidee, P. Inkeaw, T. Mekee, K. Khamyod, S. Angkurawaranon, P. Traisathit,  T. Vaniyapong, I. Chitapanarux, Comparative Analysis between Different Volumetric Methods on Measuring Intracranial Hemorrhage Incorporating Roundness Index, submitted to Journal of Neurosurgery

In preparation

• P. Jaima, P. Homsombut, S. Chaidee. Decomposition of Polyhedra to Polylinks
• N. Rintaew, S. Chaidee. Squares in Trapezoids
• S. Chaidee and Y. Chao. Convex Decomposition Arising from Geometric Triangulation

Preprints

• S. Chaidee and K. Sugihara, Recognition of Spherical Laguerre Voronoi Diagram Arxiv

Proceedings (Book of Abstracts)

1. S. Chaidee, P. Homsombat, and P. Jaima. A Family of Convex Polyhedra Generated by Regular Polylinks. In Proc. of The 24th Japan Conference on Discrete and Computational Geometry, Graphs, and Games (JCDCGGG 2022), pages 21-22, 2022. Here
2. N. Rintaew and S. Chaidee. The Conditions for Fitting a Square in a Trapezoid , In Proc. of The 23rd Thailand-Japan Conference on Discrete and Computational Geometry, Graphs, and Games (TJCDCGGG 2020+1), pages 90-91, 2021.  Here
3. K. Sriamorn, S. Sriswasdi and S. Chaidee. The Non-Existence of Convex Configuration for a Given Set of Radii in Two-Dimensional Space, In Proc. of The 22nd Japan Conference on Discrete and Computational Geometry, Graphs, and Games (JCDCGGG’19), pages 113-114, 2019. Here
4. S. Chaidee, S. Nishida and N. Phetmak, Geometrical Analysis of Crane Game in Two Dimensions, In Proc. of The 21st Japan Conference on Discrete and Computational Geometry, Graphs, and Games (JCDCGGG’18), pages 43-45, 2018. Here
5. S. Chaidee and K. Sugihara, Laguerre Voronoi Diagram as a Model for Generating the Tessellation Patterns on the Sphere, In Proc. of The 20th Japan Conference on Discrete and Computational Geometry, Graphs, and Games (JCDCGGG’17), pages 33-34, 2017. Here
6. S. Chaidee and K. Sugihara, Recognition of the Spherical Laguerre Voronoi Diagram, In Computational Geometry Week 2016: Young Researcher Forum , pages 5-6, 2016. Here
7. S. Chaidee and K. Sugihara, Laguerre Voronoi Diagram as a Tool for Fitting Spherical Tessellations Using Planar Photographic Images, In Proc. of The 19th Japan Conference on Discrete and Computational Geometry, Graphs, and Games (JCDCGGG’16), pages 60-61, 2016. Here
8. S. Chaidee and K. Sugihara, Approximation of a Spherical Tessellation by the Laguerre Voronoi Diagram, In Proc. of the 32th European Workshop on Computational Geometry (EuroCG’16), page 143 – 146, 2016. Here
9. S. Chaidee and K. Sugihara. Fitting spherical Laguerre Voronoi diagrams to real world tessellations using planar photographic images. In Proc. of the 18th Japan Conference on Discrete, Computational Geometry, and Graphs (JCDCGG’15), pages 40-41, 2015
10. S. Chaidee and K. Sugihara, A Method for Fitting Real World Tessellations with Voronoi Diagrams, In Proc. of the 31th European Workshop on Computational Geometry (EuroCG’15), page 192 – 195, 2015. Here
11. S. Chaidee and K. Sugihara. Comparison between curved-surface tessellations and the Voronoi diagrams using planar photographic images. In Proc. of the 17th Japan Conference on Discrete, Computational Geometry, and Graphs (JCDCGG’14), pages 11-12, 2014
12. S. Chaidee and W. Wichiramala. Optimal Partitioning of a Square Problem: Numerical Approach. In Proc. of the 16th Japan Conference on Discrete and Computational Geometry (JCDCGG’13), pages 58-59, 2013. Here

Presentation

International Conferences (Oral Presentation)

• September 9-11, 2022 The 24th Japan Conference on Discrete and Computational Geometry , Graphs, and Games (JCDCGGG 2022)
  • Topic: A Family of Convex Polyhedra generated by Regular Polylinks
  • Held by: Tokyo University of Science, Japan
• September 3-5, 2021 The 23rd Thailand-Japan Conference on Discrete and Computational Geometry , Graphs, and Games (TJCDCGGG 2020+1)
  • Topic: The Conditions for Fitting a Square in a Trapezoid
  • Held by: Chiang Mai University, Thailand
• September 6-8, 2019 The 22nd Japan Conference on Discrete and Computational Geometry , Graphs, and Games (JCDCGGG 2019)
  • Topic: The Non-Existence of Convex Configuration for a Given Set of Radii in Two-Dimensional Space
  • Held by: Tokyo University of Science, Japan
• September 1-3, 2018 The 21st Japan Conference on Discrete and Computational Geometry , Graphs, and Games (JCDCGGG 2018)
  • Topic: Geometrical Analysis of Crane Game in Two Dimensions
  • Held by: Ateneo de Manila University, Manila, Phillipines
• September 21 – September 22, 2017 Third International Conference on Spatial Data Mining and Geographical Knowledge Services, as a part of Geospatial Week 2017
  • Topic: Interactive Land-Use Optimization Using Laguerre  Voronoi Diagram with Dynamic Generating Point Allocation
  • Held at: Wuhan East Lake International Conference Center, Wuhan, China
  • Organized by: ISPRS and Wuhun University, China
• August 29 – September 1, 2017 The 20th Japan Conference on Discrete and Computational Geometry , Graphs, and Games (JCDCGGG 2017)
  • Topic: Laguerre Voronoi Diagram as a Model for Generating the Tessellation Patterns on the Sphere
  • Held by: Tokyo University of Science, Japan
• June 14 – 18, 2016 The Computational Geometry Week (CG Week 2016), with the 32nd International Symposium on Computational Geometry (SoCG 2016)
  • Young Researcher Forum session
  • Topic: Recognition of the Spherical Laguerre Voronoi Diagram
  • Held at: Tufts University, Boston, USA
  • Organized by CG Committee
• March 30 – April 1, 2016 The 32st European Workshop in Computational Geometry (EuroCG 2015)
  • Topic: Approximation of a Spherical Tessellation by the Laguerre Voronoi Diagram
  • Held at: University of Lugano (USI), Switzerland
  • Organized by EuroCG Committee
• September 14 – 16, 2015 The 18th Japan Conference on Discrete and Computational Geometry and Graphs (JCDCGG 2015)
  • Topic: Fitting Spherical Laguerre Voronoi Diagrams to Real World Tessellations Using Planar Photographic Images
  • Held at: Clock Tower Centennial Hall, Kyoto University, Kyoto, Japan
  • Organized by JCDCGG Committee
• August 4 – 7, 2015 The 10th Asian Forum in Graphic Science (AFGS 2015)
  • Topic: Numerical Fitting of Planar Photographic Image with Spherical Voronoi Diagrams
  • Held at: Chatrium Hotel, Bangkok, Thailand
  • Hosted by: King Mongkut’s University of Technology Thonburi, Thailand, in cooperate with JSGS, CGS, ISGG
• March 15 – 18, 2015 The 31st European Workshop in Computational Geometry (EuroCG 2015)
  • Topic: A Method for Fitting Real World Tessellations with Voronoi Diagrams
  • Held at: University of Ljubljana, Slovenia
  • Organized by EuroCG Committee
• September 17 – 19, 2013 The 16th Japan Conference on Discrete and Computational Geometry and Graphs (JCDCGG 2013)
  • Topic: Optimal Partitioning of a Square Problem: Numerical Approach
  • Held at: Tokyo University of Science, Japan
  • Organized by JCDCGG Committee

Poster Presentation

• November 9-12, 2016 International Conference on Mathematical Modeling and Applications 2016 ‘Origami-Based Modeling and Analysis’ 
  • Topic: Fitting the Real World Tessellations by the Spherical Laguerre Voronoi Diagram Using Planar Photographic Images
  • Held at:Meiji University, Tokyo, Japan
  • Hosted by:Meiji Institute for Advanced Study of Mathematical Sciences, Meiji University, Japan
• August 4-8, 2016 The 17th International Conference on Geometry and Graphics (ICGG2016)
  • Topic: Fitting the Real World Tessellations by the Spherical Laguerre Voronoi Diagram Using Planar Photographic Images
  • Held at: Beijing Institute of Technology, Beijing, China
  • Hosted by: The International Society for Geometry and Graphics (ISGG)
• November 14, 2015 Thai-Japan Integrated Annual Educational Talk (TJIA E-Talk)
  • Topic: On the Design Application Based on the Polygonal Patterns of the Fruit Skin Patterns
  • Collaborative work with Pat Teerasawat, I-AUD, Graduate School of Science and Technology, Meiji University
  • Held at: Kyoto Institute of Technology, Kyoto, Japan
  • Hosted by: Thai Students Association in Japan under the Royal Patronage (TSAJ)
• October 26 – 29, 2015 International Conference on Mathematical Modeling and Applications 2015 (ICMMA2015) ‘Self-Organization-Modeling and Analysis’
  • Topic: Fitting Spherical Voronoi Diagram and Spherical Laguerre Voronoi Diagram to Real World Tessellations Using Planar Photographic Images
  • Held at: Meiji University, Tokyo, Japan
  • Hosted by: Meiji Institute for Advanced Study of Mathematical Sciences, Meiji University, Japan
• August 4 – 7, 2015 The 10th Asian Forum in Graphic Science (AFGS 2015)
  • Topic: Numerical Fitting of Planar Photographic Image with Spherical Voronoi Diagrams
  • Held at: Chatrium Hotel, Bangkok, Thailand
  • Hosted by: King Mongkut’s University of Technology Thonburi, Thailand, in co-operating with JSGS, CGS, ISGG
• March 18 – 19, 2011 The 6th Conference on Science and Technology for Youths, BITEC, Thailand
  • Topic: On the Convergence of 2-step and 3-step Iterations on Banach Spaces
  • Held by: The Institute for the Promotion of Teaching Science and Technology (IPST), Thailand
• February 2, 2011 Science Student Academic Presentation, Faculty of Science, Chiang Mai University, Thailand
  • Topic: On the Convergence of 2-step and 3-step Iterations on Banach Spaces
  • Held by: Faculty of Science, Chiang Mai University, Thailand

Domestic Conferences

• June 2 – 4, 2017 The 22nd Annual Meeting in Mathematics (AMM), Chaing Mai, Thailand
  • Topic: Inverse Voronoi Diagram Problem for Analyzing Tessellation Patterns in Real World
  • Held by: Chiang Mai University and Center for Promotion of Mathematical of Thailand, Thailand
• September 2 – 4, 2016 The 19th Japan Conference on Discrete and Computational Geometry , Graphs, and Games (JCDCGGG 2016)
  • Topic: Laguerre Voronoi Diagram as a Tool for Fitting Spherical Tessellations Using Planar Photographic Images
  • Held by: Tokyo University of Science, Japan
• September 15 – 16, 2014 The 17th Japan Conference on Discrete and Computational Geometry and Graphs (JCDCGG 2014)
  • Topic: Comparison between Curved-Surface Tessellations and the Voronoi Diagrams Using Planar Photographic Images
  • Held by: Tokyo University of Science, Japan
• May 9 – 10, 2013 2013 Annual Pure and Applied Mathematics Conference  (APAM),  Bangkok, Thailand
  • Topic: Numerical Approach to the Optimal Partitioning of a Square Problem
  • Held by: Chulalongkorn University
• March 14 – 16, 2013 18th Annual Meeting in Mathematics (AMM), Krabi, Thailand
  • Topic: Numerical Approach to the Optimal Partitioning of a Square Problem
  • Held by: Thaksin University and Center for Promotion of Mathematical of Thailand, Thailand

Academic Meetings (Oral Presentation)

• March 9 – 12, 2017 The 8th Taiwan-Japan Joint Workshop for Young Scholars in Applied Mathematics
  • Topic: Voronoi-based Model for Generating the Tessellation Patterns of the Fruit Skins
  • Held by: Hiroshima Univerity, Japan (Committee from all cooperate universities)
• October 29, 2016 The 8th Thailand-Japan International Academic Conference (TJIA2016)
  • Topic: Spatial Optimization : Where Mathematics, Computer Science and Architecture Come Together
  • Collaborative work with Prompong Pakawanwong, Vorapong Suppakitpaisan, Graduate School of Informtion Science and Technology, and Pat Teerasawat, I-AUD, Graduate School of Science and Technology, Meiji University
  • Held at: Tokyo Institute of Technology, Japan
  • Hosted by:Thai Students Association in Japan under the Royal Patronage (TSAJ)
• August 30 – 31, 2016 The 9th Joint Session with Hiroshima University and Ryukoku University (第9回 広島—明治—龍谷合同合宿: Hiroshima Research Boot Camp)
  • Topic: 球面ラゲールボロノイ図と自然の模様
  • Held by: Hiroshima University, Japan
• February 27 – 29, 2016 The 7th Taiwan-Japan Joint Workshop for Young Scholars in Applied Mathematics
  • Topic: A Method for Spherical Laguerre Voronoi Diagram Approximation of a Spherical Tessellation
  • Held by: National Cheng Kung University, Taiwan(Committee from all cooperate universities)
• February 27 – March 1, 2015 The 6th Taiwan-Japan Joint Workshop for Young Scholars in Applied Mathematics 
  • Topic: A method for fitting Jackfruit skin patterns with Voronoi diagrams
  • Held by: Meiji University, Japan (Committee from all cooperate universities)
• September 1 – 2, 2014 The 7th Joint Session with Hiroshima University and Ryukoku University (第7回 広島—明治—龍谷合同合宿: Hiroshima Research Boot Camp)
  • Topic: Geometrical Analysis of the Fruit Surfaces
  • Held by: Hiroshima University, Japan
• January 8 – 10, 2014 The 9th Mathematics and Physical Sciences Graduate Congress (9th MPSGC)
  • Topic: Optimal Partitioning of a Square Problem: Numerical Approach
  • Held by: University of Malaya, Malaysia
• March 21 – 23, 2013 The 8th Conference on Science and Technology for Youths, BITEC, Thailand
  • Topic: Numerical Approach to the Optimal Partitioning of a Square Problem
  • Held by: The Institute for the Promotion of Teaching Science and Technology (IPST), Thailand
• March 18 – 19, 2011 The 6th Conference on Science and Technology for Youths, BITEC, Thailand
  • Topic: On the Convergence of 2-step and 3-step Iterations on Banach Spaces
  • Held by: The Institute for the Promotion of Teaching Science and Technology (IPST), Thailand

Short Visiting for Research Activities

• 2022 May – June (22 days): Toyo University, Saitama, Japan
• 2019 June-July (11 days): Sun Yat-Sen University, Guangzhou, China
• 2019 March (9 days): Sun Yat-Sen University, Guangzhou, China
• 2018 July – September: Visiting Scholar at Meiji Institute for Advanced Study of Mathematical Sciences (MIMS), Meiji University, Tokyo, Japan, under the FYI2018 Follow-up Research Fellowship by JASSO

Invited Talks / Seminars

• October 7, 2019, RIMS Cooperative Research : Quasiperiodic tiling and related topics (Kyoto University, Japan)
  • Topic : Spherical Laguerre Voronoi diagram: geometrical properties toward applications
• March 11, 2019, Guangzhou Discrete Mathematics Seminar (Sun Yat-Sen University, Guangzhou, China)
  • Topic : Geometrical Properties of Spherical Laguerre Voronoi Diagram with Applications
• August 24-25, 2018, MIMS 現象数理学研究拠点共同研究集会: 幾何的解析と形状表現の数理
  • Topic : Spherical Laguerre Voronoi Diagram as a Tool for Modeling the Spherical Tessellations
• June 6, 2016, MIMS Cafe Seminar
  • Topic : Spherical Laguerre Voronoi Diagram as a Tool for Fitting Real World Tessellations
• October 21, 2015 MIMS Cafe Seminar
  • Topic : Mathematical Modeling and Analysis of Fruit Skin Patterns
• October 7, 2015 Seminar of Imai’s Laboratory (University of Tokyo)
  • Topic : Mathematical Modeling and Analysis of Fruit Skin Patterns

Research Grants

• March 2019 – February 2021: TRF-CHE Research Grant for New Scholar
  • แผนภาพลาแกร์โวโรนอยบนทรงกลมแบบมัธยฐานสำหรับการศึกษาและจำลองเทสเซลเลชันบนทรงกลม
  • Project: Centroidal spherical Laguerre Voronoi diagram for understanding and modeling spherical tessellation patterns
• October 2018 – 2019: Faculty of Science Research Grant.
  • การวิเคราะห์เชิงเรขาคณิตสำหรับปัญหากล่องบนคานรูปสี่เหลี่ยมคางหมู
  • Project: Geometrical analysis of a box on the trapezoidal beam problem
• October 2017 – 2018: Faculty of Science Research Grant.
  • แผนภาพลาแกร์โวโรนอยบนทรงกลมสำหรับจำลองรูปแบบเทซเซลเลชันในธรรมชาติ
  • Project: Spherical Laguerre Voronoi diagram for modeling the tessellation patterns in real world.

Other Grants

• July – September 2018: FYI 2018 Follow-up Research Fellowship by JASSO
• September 2017: The ISPRS Foundation (TIF) travel grant to attend ISPRS Geospatial Week 2017 (18 – 22 September 2017) at Wuhan, China.

Research Experience

• 2013-2014 Chulalongkorn University, Bangkok, Thailand
  • Research Assistant;  Department of Mathematics and Computer Science
    • Research Topic: Improvement Results of Optimal Partitioning of a Square
    • Advisor: Asst.Prof. Wacharin Wichiramala, Ph.D.
• 2007 10th Junior Science Talent Project
  • Research Fund for Upper Secondary School and Undergraduate Student by National Science and Technology Development Agency (NSTDA), Thailand
  • Research Topic: Some Algebraic Properties of O(Zn)
  • Advisor: Prof. Jintana Sanwong

Academic Membership

• (2007-present) The Mathematical Association of Thailand Under the Patronage of His Majesty the King: Ordinary Membership
• (2016-present) International Society for Geometry and Graphics (ISGG): Ordinary Membership