Osaka Kyoiku University Researcher Information
日本語 | English
Division of Math, Sciences, and Information Techno
基本情報
- 所属
- 大阪教育大学 理数情報教育系 教授
- 学位
- 修士(工学)(大阪大学)博士(理学)(大阪大学)
- 研究者番号
- 70283843
- J-GLOBAL ID
- 200901015350849187
- researchmap会員ID
- 5000026358
経歴
4-
2007年4月
-
2003年1月 - 2007年3月
-
2001年4月 - 2002年12月
-
1996年4月 - 2001年3月
学歴
1-
1991年4月 - 1994年3月
論文
21-
Physical Review E 105 044130 2022年4月21日 査読有り
-
Physical Review E 101 042102 2020年4月3日 査読有り
-
Physical Review E 99 063304 2019年6月11日 査読有り
-
Physica A 491 1014-1022 2018年 査読有り
MISC
2-
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL 41(33) 332004 2008年8月The hyperparameter in image restoration by the Bayes formula is an important quantity. This communication shows a physical method for the estimation of the hyperparameter without approximation. For artificially generated images by prior probability, the hyperparameter is computed accurately. For practical images, accuracy of the estimated hyperparameter depends on the magnetization and energy of the images. We discuss the validity of prior probability for an original image.
-
PHYSICS OF FLUIDS 15(9) 2480-2485 2003年9月We investigate a stability of a lamellar domain in phase-separating binary fluids under an external flow. Using the Navier-Stokes and the Cahn-Hilliard equations, we take into account effects of diffusion and surface tension at an interface. Stability eigenvalues are evaluated for various values of the Peclet number, the spacing between the interfaces, and the Reynolds number. It is found that the lamellar domain becomes unstable at a finite wavenumber before the flow when the Reynolds number increases. The instability of the interface occurs on conditions that the interface is situated near a wall or the Peclet number is large. The instability stems from the interaction between disturbances of the flow and the diffusive interface. (C) 2003 American Institute of Physics.