MASARU IKEHATA
Last Updated :2023/01/05
- Affiliations, Positions
- Graduate School of Advanced Science and Engineering, Professor
- Web Site
- E-mail
- ikehata
hiroshima-u.ac.jp
Basic Information
Major Professional Backgrounds
- 2013/04/01, 2020/03/31, Hiroshima University, Institute of Engineering, Professor
- 2020/04/01, Hiroshima University, Graduate School of Advanced Science and 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
- 2022, Undergraduate Education, 1Term, Applied Mathematics II
- 2022, Undergraduate Education, 2Term, Applied Mathematics III
- 2022, Undergraduate Education, 4Term, Engineering Mathematics C
- 2022, Graduate Education (Master's Program) , 1Term, Special Exercises on Electorical, Systems, and Control Engineering A
- 2022, Graduate Education (Master's Program) , 2Term, Special Exercises on Electorical, Systems, and Control Engineering A
- 2022, Graduate Education (Master's Program) , 3Term, Special Exercises on Electorical, Systems, and Control Engineering B
- 2022, Graduate Education (Master's Program) , 4Term, Special Exercises on Electorical, Systems, and Control Engineering B
- 2022, Graduate Education (Master's Program) , Academic Year, Special Study on Electorical, Systems, and Control Engineering
- 2022, Graduate Education (Master's Program) , 2Term, Mathematics D
- 2022, Graduate Education (Doctoral Program) , Academic Year, Special Study on Electorical, Systems, and Control Engineering
Research Activities
Academic Papers
- Revisiting the probe and enclosure methods, Inverse Problems, 38(7), 075009(33pp), 20220701
- Reconstruction of a source domain from the Cauchy data: II. Three-dimensiona case, Inverse Problems, 37(12), 125004 (29pp), 20211102
- The enclosure method for inverse obstacle scattering over a finite time interval: VI. Using shell-type initial data, J. Inverse Ill-Posed Probl., 28(3), 349-366, 20200601
- The enclosure method for the heat equation using time-reversal invariance for a wave equation, J. Inverse Ill-Posed Probl., 28(1), 93-104, 20200201
- Prescribing a heat flux coming from a wave equation, J. Inverse ILL-Posed Probl., 27(5), 731-744, 20191001
- 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
- ON FINDING THE SURFACE ADMITTANCE OF AN OBSTACLE VIA THE TIME DOMAIN ENCLOSURE METHOD, INVERSE PROBLEMS AND IMAGING, 13(2), 263-284, 20190400
- 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
- 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
- Revealing cracks inside conductive bodies by electric surface measurements, INVERSE PROBLEMS, 35(2), 20190200
- ON FINDING A BURIED OBSTACLE IN A LAYERED MEDIUM VIA THE TIME DOMAIN ENCLOSURE METHOD, INVERSE PROBLEMS AND IMAGING, 12(5), 1173-1198, 201810
- 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, 201806
- 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, 201801
- 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, J. Inverse Ill-Posed Probl., 25(6), 747-761, 20171201
- New development of the enclosure method for inverse obstacle scattering, Inverse Problems and Computational Mechanics, 2, 123-147, 20161205
- Trusted frequency region of convergence for the enclosure method in thermal imaging, JOURNAL OF INVERSE AND ILL-POSED PROBLEMS, 25(1), 81-97, 201702
- 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, 20170315
- ON FINDING AN OBSTACLE WITH THE LEONTOVICH BOUNDARY CONDITION VIA THE TIME DOMAIN ENCLOSURE METHOD, INVERSE PROBLEMS AND IMAGING, 11(1), 99-123, 201702
- The enclosure method for an inverse problem arising from a spot welding, Mathematical Methods in the Applied Sciences, 39(13), 3565-3575, 20160915
- THE ENCLOSURE METHOD FOR INVERSE OBSTACLE SCATTERING USING A SINGLE ELECTROMAGNETIC WAVE IN TIME DOMAIN, INVERSE PROBLEMS AND IMAGING, 10(1), 131-163, 20160200
- On finding an obstacle embedded in the rough background medium via the enclosure method in the time domain, INVERSE PROBLEMS, 31(8), 20150724
- 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
- Analytical methods for extracting discontinuity in inverse problems: The probe method after 10 years, SUGAKU EXPOSITIONS, 26(1), 1-28
- 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
- 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
- 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), 20130731
Invited Lecture, Oral Presentation, Poster Presentation
- Exponential Function and Inverse Problems, Masaru Ikehata, 2022 Construction Subcommittee Regular Meeting/Lecture, The Institute of Professional Engineers, Japan, 2022/06/18, With Invitation, Japanese, The Institute of Professional Engineers, Hiroshima, Japan, online, Hiroshima, Japan
- 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, English, Oludeniz-Fethiye, Turkey
- 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, English, RIMS, Kyoto
- 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, English, Helsinki, Finland
- The enclosure method for inverse obstacle scattering in time domain, Masaru Ikehata, Workshop on Analysis in Kagurazaka 2016, 2016/01/22, With Invitation, English, The Tokyo University of Science, Kagurazaka, Tokyo
- The enclosure method for the Maxwell system in time domain, Masaru Ikehata, Geometry of solutions of PDE's and related inverse problems, 2016/10/06, With Invitation, English, Tohoku University, Aoba, Sendai, Tohoku University
- 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, English, ICUB, Unv. Bucharest, Bucharest, Romania
- 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, English, RIMS, Kyoto, Japan
- 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, English, Zhejiang University, Hangzhou, China
- 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, English, Tohoku University, Sendai, Japan
- 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, English, Mishio Kawashita, Samuli Siltanen, Takanori Ide, Hironichi Itou, Tokyo University of Science, Tokyo
- 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, English, RIMS, Kyoto Univ., Kyoto
- 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, English, Valencia, Spain
- Prescribing a heat flux coming from a wave equation,
Masaru Ikehata,
The XIII international scientific conference and young scientist school ``Theory and Numerics of Inverse and Ill-posed Problems'' online April 16, 2021, Akademgorodok, Novosibirsk, Russia., 2021/04/16, With Invitation, English, 2021/04/16, With Invitation, English
- The time domain enclosure method for an inverse obstacle problem
governed by the Maxwell system, Masaru IKEHATA, DAYS on DIFFRACTION 2021, 2021/06/02, With Invitation, English, the Steklov Mathematical Institute, St. Petersburg, Russia.
- On finding a penetrable obstacle via the time domain enclosure method for the Maxwell system, Masaru IKEHATA, Eurasian Conference on Applied Mathematics-2021, 2021/12/16, With Invitation, English, Mathematical Center in Akademgorodok, Akademgorodok, Novosibirsk, Russia
- On finding a penetrable obstacle via the time domain enclosure method for the Maxwell system, Masaru IKEHATA, RIMSWorkshop``Theory and practice in inverse problems", 2022/01/06, With Invitation, English, RIMS, Kyoto University,, Kyoto, Japan
Awards
- 2021/11/24, IOP Trusted Reviewer, Institute of Physics, IOP Publishing, IOP Trusted REviewer
Social Activities
Organizing Academic Conferences, etc.
- Workshop on PDEs in Direct and Inverse Problems 2019, member of organizers, 2019/11, 2019/11
- Geometry of solutions of PDE's and its related inverse problems, organizing comittee, 2016/10, 2016/10
History as Peer Reviews of Academic Papers
- Journal of inverse and ill-posed problems, Editor, Editorial Board Member