MASARU IKEHATA

Last Updated :2019/11/11

Affiliations, Positions
Graduate School of Engineering, Professor
E-mail
ikehatahiroshima-u.ac.jp

Basic Information

Major Professional Backgrounds

  • 2013/04/01, Hiroshima University, Institute of Engineering, Professor

Academic Degrees

  • Doctor of Science, Tokyo Metropolitan University
  • Master of Science, Tokyo Metropolitan University

Research Fields

  • Mathematical and physical sciences;Mathematics;Mathematical analysis

Research Keywords

  • inverse problems, inverse obstacle scattering, enclosure method, probe method, inverse boundary value problems, partial differential equations, non destructive testing,

Educational Activity

Course in Charge

  1. 2019, Undergraduate Education, 1Term, Applied Mathematics II
  2. 2019, Undergraduate Education, 2Term, Applied Mathematics III
  3. 2019, Graduate Education (Master's Program) , 4Term, Mathematics II
  4. 2019, Graduate Education (Master's Program) , First Semester, Directed Study in System Cybernetics IA
  5. 2019, Graduate Education (Master's Program) , Second Semester, Directed Study in System Cybernetics IB
  6. 2019, Graduate Education (Master's Program) , First Semester, Directed Study in System Cybernetics IIA
  7. 2019, Graduate Education (Master's Program) , Second Semester, Directed Study in System Cybernetics IIB
  8. 2019, Graduate Education (Master's Program) , First Semester, Seminar in System Cybernetics IA
  9. 2019, Graduate Education (Master's Program) , Second Semester, Seminar in System Cybernetics IB
  10. 2019, Graduate Education (Master's Program) , First Semester, Seminar in System Cybernetics IIA
  11. 2019, Graduate Education (Master's Program) , Second Semester, Seminar in System Cybernetics IIB

Research Activities

Academic Papers

  1. The enclosure method for inverse obstacle scattering problems with dynamical data over a finite time interval: III. Sound-soft obstacle and bistatic data, INVERSE PROBLEMS, 29(8), 201308
  2. Extracting the geometry of an obstacle and a zeroth-order coefficient of a boundary condition via the enclosure method using a single reflected wave over a finite time interval, INVERSE PROBLEMS, 30(4), 201404
  3. Estimates of the integral kernels arising from inverse problems for a three-dimensional heat equation in thermal imaging, KYOTO JOURNAL OF MATHEMATICS, 54(1), 1-50, 2014
  4. Analytical methods for extracting discontinuity in inverse problems: The probe method after 10 years, SUGAKU EXPOSITIONS, 26(1), 1-28
  5. AN INVERSE PROBLEM FOR A THREE-DIMENSIONAL HEAT EQUATION IN THERMAL IMAGING AND THA ENCLOSURE METHOD, INVERSE PROBLEMS AND IMAGING, 8(4), 1073-1116, 201411
  6. On finding an obstacle embedded in the rough background medium via the enclosure method in the time domain, INVERSE PROBLEMS, 31(8), 201508
  7. THE ENCLOSURE METHOD FOR INVERSE OBSTACLE SCATTERING USING A SINGLE ELECTROMAGNETIC WAVE IN TIME DOMAIN, INVERSE PROBLEMS AND IMAGING, 10(1), 131-163, 201602
  8. The enclosure method for an inverse problem arising from a spot welding, Mathematical Methods in the Applied Sciences, 39(13), 3565-3575, 20160915
  9. ON FINDING AN OBSTACLE WITH THE LEONTOVICH BOUNDARY CONDITION VIA THE TIME DOMAIN ENCLOSURE METHOD, INVERSE PROBLEMS AND IMAGING, 11(1), 99-123, FEB 2017
  10. Trusted frequency region of convergence for the enclosure method in thermal imaging, JOURNAL OF INVERSE AND ILL-POSED PROBLEMS, 25(1), 81-97, FEB 2017
  11. A remark on finding the coefficient of the dissipative boundary condition via the enclosure method in the time domain, MATHEMATICAL METHODS IN THE APPLIED SCIENCES, 40(4), 915-927, MAR 15 2017
  12. New development of the enclosure method for inverse obstacle scattering, Inverse Problems and Computational Mechanics, 2, 123-147, 20161205
  13. The enclosure method for inverse obstacle scattering over a finite time interval: IV. Extraction from a single point on the graph of the response operator, JOURNAL OF INVERSE AND ILL-POSED PROBLEMS, 25(6), 747-761, DEC 2017
  14. ASYMPTOTIC BEHAVIOR OF THE SOLUTIONS FOR THE LAPLACE EQUATION WITH A LARGE SPECTRAL PARAMETER AND THE INHOMOGENEOUS ROBIN TYPE CONDITIONS, OSAKA JOURNAL OF MATHEMATICS, 55(1), 117-163, JAN 2018
  15. On finding a cavity in a thermoelastic body using a single displacement measurement over a finite time interval on the surface of the body, JOURNAL OF INVERSE AND ILL-POSED PROBLEMS, 26(3), 369-394, JUN 2018
  16. ON FINDING A BURIED OBSTACLE IN A LAYERED MEDIUM VIA THE TIME DOMAIN ENCLOSURE METHOD, INVERSE PROBLEMS AND IMAGING, 12(5), 1173-1198, 201810
  17. Revealing cracks inside conductive bodies by electric surface measurements, INVERSE PROBLEMS, 35(2), 201902
  18. The enclosure method for inverse obstacle scattering over a finite time interval: V. Using time-reversal invariance, JOURNAL OF INVERSE AND ILL-POSED PROBLEMS, 27(1), 133-149, 201902
  19. ON FINDING THE SURFACE ADMITTANCE OF AN OBSTACLE VIA THE TIME DOMAIN ENCLOSURE METHOD, INVERSE PROBLEMS AND IMAGING, 13(2), 263-284, 201904
  20. Detecting a hidden obstacle via the time domain enclosure method. A scalar wave case, MATHEMATICAL METHODS IN THE APPLIED SCIENCES, 42(5), 1413-1431, 20190330
  21. ON FINDING A BURIED OBSTACLE IN A LAYERED MEDIUM VIA THE TIME DOMAIN ENCLOSURE METHOD IN THE CASE OF POSSIBLE TOTAL REFLECTION PHENOMENA, INVERSE PROBLEMS AND IMAGING, 13(5), 959-981, 201910
  22. Prescribing a heat flux coming from a wave equation, J. Inverse ILL-Posed Probl., 27(5), 731-744, 20191001

Invited Lecture, Oral Presentation, Poster Presentation

  1. The enclosure method for inverse obstacle scattering in time domain, Masaru Ikehata, 7th International Conference ``Inverse Problems:Modeling and Simulation'', 2014/05/28, With Invitation, Oludeniz-Fethiye, Turkey
  2. Some recent results on inverse obstacle scattering in time domain using the enclosure method, Masaru Ikehata, Inverse problems of differential equations and related topics, 2015/01/28, With Invitation, RIMS, Kyoto
  3. The enclosure method for inverse obstacle scattering using a single electromagnetic wave in time domain, Masaru Ikehata, Applied Inverse Problem Conference AIPC 2015, 2015/05/28, With Invitation, Helsinki, Finland
  4. The enclosure method for inverse obstacle scattering in time domain, Masaru Ikehata, Workshop on Analysis in Kagurazaka 2016, 2016/01/22, With Invitation, The Tokyo University of Science, Kagurazaka, Tokyo
  5. The enclosure method for the Maxwell system in time domain, Masaru Ikehata, Geometry of solutions of PDE's and related inverse problems, 2016/10, With Invitation, Tohoku University, Aoba, Sendai, Tohoku University
  6. The probe and enclosure methods for inverse obstacle scattering problems governed by partial differential equations, Masaru Ikehata, ICUB Talks:Exact Sciences Section, 2016/11/10, With Invitation, ICUB, Unv. Bucharest, Bucharest, Romania
  7. The enclosure method for inverse obstacle scattering over a finite time interval:IV. Extraction from a single point on the graph of the response operator, Masaru Ikehata, Inverse problems for partial differential equations, 2017/01/26, With Invitation, RIMS, Kyoto, Japan
  8. On finding an obstacle embedded in the rough background medium via the enclosure method in the time domain, Masaru Ikehata, Applied Inverse Problems 2017, 2017/06/02, With Invitation, Zhejiang University, Hangzhou, China
  9. Detection and range estimation of a hidden object using the time domain enclosure method, Masaru Ikehata, Geometry and Inverse Problems in cooperation with A3 FORESIGHT PROGRAM, 2017/10/06, With Invitation, Tohoku University, Sendai, Japan
  10. Recent topics on the time domain enclosure method, Masaru Ikehata, Inverse problems for partial differential equations in honor of Professor Masaru Ikehata on the occasion of his 60th birthday, 2018/08/27, With Invitation, Mishio Kawashita, Samuli Siltanen, Takanori Ide, Hironichi Itou, Tokyo University of Science, Tokyo
  11. Recent developments of the time domain enclosure method for the Maxwell system, Masaru Ikehata, RIMS Workshop on Inverse problems for partial differential equations and related areas, 2019/01/16, With Invitation, RIMS, Kyoto Univ., Kyoto
  12. On finding a cavity in a thermoelastic body using a single displacement measurement over a finite time interval on the surface of the body, Masaru Ikehata, 9th International Congress on Industrial and Applied Mathematics, 2019/07/19, With Invitation, Valencia, Spain