### Assistant Professor

Ph.D. in Mathematics Louisiana State University, Baton Rouge, LA.

Office : B 203/2

Tel : 02-2201-5445

Fax : 0-2201-5343

Email : chanun.lew@mahidol.ac.th

## Research Activities

**Areas of Expertise**

Graph Theory; in particular, graph minors

**Current Interests and Activities**

My recent and current research activities involve graph theory and its applications in the following areas.

- 1. An excluded minor theorem of a graph, such as characterizing internally 4-connected graphs with no cube-minor. The investigations usually involve splitter theorems.
- 2. Analyzing the efficiency of the traffic light phasing system by simulating the system in a form of an interval graph.
- 3. Analyzing Thailand Stock Markets by using graph theoretical tools.
- 4. A game played on the Bangkok public transportation network in the PM2.5 situation.
- 5. Origami and graph theory

## Recent Publications

Ding, Guoli; Lewchalermovongs, Chanun; Maharry, John, Graph with no P ̅_7-minor, submitted to The Electronic Journal of Combinatorics.

## Conference Proceedings/Workshop Contributions

November 2015 LSU International Research Fair, Louisiana State University

June 2015 Faculty Focus Workshop 2015, Louisiana State University “Implementing Active Learning in Large Classes: Discover What Works for You”

May 2015 Open Sessions – 2015 LSU CxC Faculty Summer Institute, Louisiana State University

“Communication to learn: activities to enhance content learning & skills building”

“How do I lead effective class discussions?”

March 2013 AMS Sectional Meeting on Algebraic Combinatorics, University of Mississippi, Oxford, MS

August 2007 International Conference in Mathematics and Applications 2007 (ICMA–MU 2007), Mahidol University

March 2007 The 2nd Science and Technology Conference for Youths, Kasetsart University

December 2005 International Conference in Mathematics and Applications 2005 (ICMA–MU 2005), Mahidol University

March 2004 Science Project Exhibition of Faculty of Science 2004, Mahidol University

## Oral Presentations

November 2015 Well-Quasi-Ordering by the Induced-Minor RelationLSU International Research Fair, Louisiana State University

October 2015 Graphs without W_4 and K_5\e as Induced Minors Combinatorics Seminar, Louisiana State University

May 2011 Origami and Graph Theory Communication Mathematics Seminar, Louisiana State University

August 2007 A Variation of the Opaque Problem International Conference in Mathematics and Applications 2007 (ICMA–MU 2007), Mahidol University

March 2007 A Variation of the Opaque Problem The 2nd Science and Technology Conference for Youths, Kasetsart University, Bangkok, Thailand

March 2004 Solving Functional Equations (Poster) Science Project Exhibition of Faculty of Science 2004, Mahidol University

## PAPERS IN PREPARATION

Lewchalermvongs, Chanun and Ding, Guoli, Graphs without W_4 and K_5\e as Induced Minors.

## AWARDS AND HONORS

Spring 2015 Certificate of Teaching Excellence Awarded by the Mathematics Department, Louisiana State University

2010 – Present A Scholarship to Pursue a Ph.D. Level abroad Development and Promotion of Science and Technology Talent Project Scholarship (DPST) jointly administered by the Ministry of Science and Technology, the Ministry of Education and the Institute for the Promotion of Teaching Science and Technology (IPST)

2000 – 2009 A Scholarship to Pursue a Bachelor, Master and Ph.D. levels inside Thailand Development and Promotion of Science and Technology Talent Project Scholarship (DPST) jointly administered by the Ministry of Science and Technology, the Ministry of Education and the Institute for the Promotion of Teaching Science and Technology (IPST)

## TEACHING EXPERIENCE

Fall 2015 Teacher of Record for College Algebra (Math 1021) Louisiana State University I was responsible for the lectures and working as a tutor in the Math Lab. All examinations were done through the MyMathLab software.

Summer 2015 Teacher of Record for Calculus I (Math 1550) Louisiana State University This is a five hour Calculus course. I am responsible for all aspects of the course.

Spring 2015 Teacher of Record for Calculus II (Math 1552) Louisiana State University This is a four hour Calculus course. I was responsible for all aspects of the course.

Fall 2014 Teacher of Record for Calculus I (Math 1550) Louisiana State University Summer 2014 Tutor for the Pleasant Hall R2R Math Lab Louisiana State University I helped students in a variety of courses complete work on computer-based assignments, using Pearson MyMathLab software. Subjects taught include College Algebra, Plane Trigonometry, and Pre-Calculus.

Spring 2014 Recitation Section Leader for Calculus I (Math 1550) Louisiana State University

Fall 2013

Teacher of Record for College Algebra (Math 1021) Louisiana State University I was responsible for the lectures and working as a tutor in the Math Lab. All examinations were done through the MyMathLab software.

Assistant Lab Manager for the Pleasant Hall R2R Math Lab Louisiana State University I tutored College Algebra, Plane Trigonometry, and Pre-Calculus, oversaw the undergraduate tutors in the Math Lab, sent nightly reports to instructors concerning their students’ progress, and made sure everything ran smoothly in the two R2R Math Labs which together housed over 250 students.

Spring 2013 Assistant Lab Manager for the Pleasant Hall R2R Math Lab Louisiana State University

Fall 2012

Tutor for College Trigonometry (Math 1022)

Assistant Lab Manager for the Pleasant Hall R2R Math Lab Louisiana State University

Spring 2012

Tutor for College Trigonometry (Math 1022)

Assistant Lab Manager for the Pleasant Hall R2R Math Lab Louisiana State University

Fall 2011

Grader for Abstract Algebra I (Math 4200) and Complex Variables (Math 4036)

Tutor for College Trigonometry (Math 1022)

Tutor for the Pleasant Hall R2R Math Lab Louisiana State University

Spring 2011

Grader for Discrete Dynamical Systems (Math 2030)

Tutor for College Trigonometry (Math 1022)

Tutor for the Pleasant Hall R2R Math Lab Louisiana State University

2006 – 2009 Mathematics Teacher English Program at Samsen Wittayalai School, Bangkok, Thailand I prepared the lesson plan and taught 7th and 8th grades Mathematics. I wrote two 12th grade Mathematics topics for the program, Graph Theory and Complex Numbers.

2005 – 2006 Mathematics Tutor One2One Center (Sakamoto Method), Bangkok, Thailand I was trained the Sakamoto method and sent to Assumption College Samutprakarn as a mathematics tutor.

## OTHER ACTIVITIES

Spring 2014, 2015 Proctor and Grader (Volunteer), “High School Mathematics Contest”, Louisiana State University

Fall 2012A LINK Volunteer at “the International Student Orientation”, Louisiana State University

2004 Executive Director and Art Director, “Keaw-Koi”, the college yearbook of Faculty of Science, Mahidol University I established the operations plan, and designed the format of the yearbook and the compact disc.

2003 Presenter, “Open House” at Faculty of Science, Mahidol University I presented on the topic “On the Mathematics of Paper Folding” and demonstrated the folding step of my crease-pattern models.

2002 Activities Coordinator, “Science Camp” at Mahidol University I developed the activities program for the camp.

2001 Coordinator, “Science Camp” at Mahidol University I visited schools in Bangkok to promote the camp.

2000 Mentor, “Science Camp” at Mahidol University I supervised a group of students at the camp.

## EDUCATION

2015, Ph.D. in Mathematics Louisiana State University, Baton Rouge, LA Advisor: Prof. Guoli Ding

2012, Master of Science in Mathematics Louisiana State University, Baton Rouge, LA

2009, Master of Science in Applied Mathematics Mahidol University, Bangkok, Thailand Thesis Title: A Variation of the Opaque Problem Advisor: Asst. Prof. Chaiwat Maneesawarng Co-Advisor: Dr. Somsak Orankitjaroen

2004, Bachelor of Science in Mathematics (2nd Class Honors) Mahidol University, Bangkok, Thailand Senior Project: Solving Functional Equations Advisor: Dr. Somsak Orankitjaroen

2000, High School Diploma (Mathematics-Science Program) Mahidol Wittayanusorn School, Nakhon Pathom, Thailand