Some thoughts on implementing US physics doctoral education in Japanese universities

Yasumi Abe,Satoshi P. Watanabe 서울대학교 교육연구소 2012 Asia Pacific Education Review Vol.13 No.3

Recent policy debates surrounding Japan's graduate education raise a serious skepticism in the validity of its "research-based" or "learning-by-doing" training approach that these institutions have uniquely established. Proponents of reform suggest drastic restructuring of the graduate programs by replacing the experience-based mentoring aspect with more systematic education that blends an array of coursework and examinations. However, whether such a coursework-based model of graduate training will successfully function without sacrificing the traditional virtue of Japanese practices is an unsubstantiated matter. Japanese graduate schools have produced scientists who have made immense contributions to the advancement in our scientific knowledge. Policy makers and academia in Japan should humbly acknowledge this fact and prudently determine what aspects of their educational content should be reformed and what should be retained. In order to do this, the merits and demerits of alternative models must be clearly understood. The objective of this study is to affirm both the strengths and weaknesses of the traditional approach that Japanese universities need to consider preserving and eliminating, in order to capitalize on their institutional heritage while also building in the educational caliber of the rigorous US graduate training model in the reforming process.

Large venous malformation of right colonic flexure

( Akihiro Kitahama ),( Yasumi Katayama ),( Yoshitake Sugamata ),( Masaya Tamano ) 대한내과학회 2016 The Korean Journal of Internal Medicine Vol.31 No.6

A Comparative Study of Characteristics of Teachers‘ Narratives Regarding Recognition and Expression of Emotion among Japanese Kindergartens: Analysis of Teachers‘ Narratives of Video Viewing

Fuminori Nakatsubo,Kiyomi Akita,Tokie Masuda,Katsuo Yasumi,Fumiko Sunagami,Junko Minowa 한국유아교육학회 2010 INTERNATIONAL JOURNAL OF EARLY CHILDHOOD EDUCATION Vol.16 No.2

The purpose of this study is (1) to clarify, by monitoring discussion in group settings, how teachers at Japanese kindergartens recognize emotions of educators and young children in videos of early childhood care and education; (2) to clarify how teachers express their emotions that are aroused by viewing videos in a group discussion setting; (3) to compare the differences in teachers‘ narratives among four kindergartens. The participants are 21 teachers in kindergartens A, B, C and D. All of the participants watched three videos and participated in discussion about the video afterward. And then we analyzed the expression and recognition of emotions in their narratives. Although the participants watched the same videos, the teachers‘ narratives were different: (a) the characteristics of teachers‘ narratives about recognition of emotions were as follows: The A teachers viewed the emotions of the educators in the videos critically by keeping a certain psychological distance. The C teachers were sympathetic to the emotions of the educators in the videos. The D teachers descriptively discussed the emotions of the educators in the video. (b) The characteristics of the teachers‘ narratives about recognition of expressions were as follows: The A teachers expressed sympathy for the young children in the video by critically viewing the educators. The B teachers reflected on their own action with young children by replacing the educators in the video. The C teachers expressed sympathy for the educators in the video by assimilating with the educators.

Water Lubricated Guide Bearing with Self-aligning Segments

Oguma, Tadashi,Nakagawa, Naritoshi,Mikami, Makoto,Thantrong, Long,Kizaki, Yasumi,Takimoto, Fumio Korean Society for Fluid machinery 2013 International journal of fluid machinery and syste Vol.6 No.2

Water lubricated guide bearing was newly released and has been applied to actual hydro turbines with vertical shaft. As a result, they can have not only high bearing performance but environmental advantages in meeting the demand for reducing river pollution by oil leakage from oil lubricated guide bearing. The PTFE composite guide bearing was tested by experimental equipment operated under conditions similar to those of actual hydro turbines. Circumferential and axial tilting bearing segments help to improve the bearing performance and efficiency due to low friction loss in the bearing system. Furthermore, bearing cooling systems could be eliminated and maintenance periods could be extended, thus the initial investment and operating costs of the hydroelectric power plant are reduced.

Water Lubricated Guide Bearing with Self-aligning Segments

Tadashi OGUMA,Naritoshi NAKAGAWA,Makoto MIKAMI,Long THANTRONG,Yasumi KIZAKI,Fumio TAKIMOTO 한국유체기계학회 2013 International journal of fluid machinery and syste Vol.6 No.2

Water lubricated guide bearing was newly released and has been applied to actual hydro turbines with vertical shaft. As a result, they can have not only high bearing performance but environmental advantages in meeting the demand for reducing river pollution by oil leakage from oil lubricated guide bearing. The PTFE composite guide bearing was tested by experimental equipment operated under conditions similar to those of actual hydro turbines. Circumferential and axial tilting bearing segments help to improve the bearing performance and efficiency due to low friction loss in the bearing system. Furthermore, bearing cooling systems could be eliminated and maintenance periods could be extended, thus the initial investment and operating costs of the hydroelectric power plant are reduced.

Effect of Spatial Variation of Soil Respiration Rates Following Disturbance by Timber Harvesting in a Larch Plantation in Northern Japan

( Oxana V. Masyagina ),( Takashi Hirano ),( Dong Hun Ji ),( Dong Su Choi ),( Lai Ye Qu ),( Yasumi Fujinuma ),( Kaichiro Sasa ),( Yojiro Matsuura ),( Stanislav G. Prokushkin ),( Takayoshi Koike ) 한국임학회 2006 Forest Science And Technology Vol.2 No.2

Deposition of Aerosols on Leaves in a Cool-temperate Larch Forest in Northern Hokkaido, Japan

Tatsuya, Fukazawa,Naoto, Murao,Hisashi, Sato,Masahiro, Takahashi,Masayuki, Akiyama,Takashi, Yamaguchi,Izumi, Noguchi,Hiroyuki, Takahashi,Chikara, Kozuka,Rei, Sakai,Kentaro, Takagi,Yasumi, Fujinuma,Nob Korean Society for Atmospheric Environment 2012 Asian Journal of Atmospheric Environment (AJAE) Vol.6 No.4

Aerosol concentrations at the CC-Lag site in the Teshio Experimental Forest increased from winter to spring and sometimes showed extremely high values associated with Kosa and/or forest-fire events. The range and mean of the mass concentrations of aerosol chemical species were as follows: total particulate mass, 1.2-29, 5.0; elemental carbon, 0.061-2.2, 0.43; organic carbon, 0.059-3.5, 0.79; and sulfate, 0.12-6.2, 1.8 ${\mu}g/m^3$. The total masses of the deposited particles on hybrid larch and on bamboo leaves were approximately 35 and 30 ${\mu}g/cm^2$, respectively. The amounts of soil particles on the leaves were 6 ${\mu}g/cm^2$ for the upper part of hybrid larch, 2 ${\mu}g/cm^2$ for the lower part of hybrid larch, and 1 ${\mu}g/cm^2$ for Sasa bamboo leaves. The amounts of deposited black carbon were 2.3 ${\mu}g/cm^2$ for the upper part of hybrid larch, 0.6 ${\mu}g/cm^2$ for the lower part of hybrid larch, and 0.2 ${\mu}g/cm^2$ for Sasa bamboo leaves. Half of the total deposited particular mass was attached on the hybrid larch; however, most of the total deposited mass was adhered on the Sasa bamboo leaves. Regardless of the species, there tend to be more deposited particles on the leaves in the upper part than in the lower part, with only a few meters height difference. Comparing the composition of the deposited particles to that of the atmospheric aerosols without any size cut, the fractions of water-soluble material sulfate and sea salt in the deposited aerosols were about one tenth and one hundredth lower than that in the aerosols, respectively. On the basis of the measured concentration and the deposited amount on leaves, the deposition velocity of black carbon was estimated to be approximately 0.5 cm/s.

Deposition of Aerosols on Leaves in a Cool-temperate Larch Forest in Northern Hokkaido, Japan

Fukazawa Tatsuya,Murao Naoto,Sato Hisashi,Takahashi Masahiro,Akiyama Masayuki,Yamaguchi Takashi,Noguchi Izumi,Takahashi Hiroyuki,Kozuka Chikara,Sakai Rei,Takagi Kentaro,Fujinuma Yasumi,Saigusa Nobuko 한국대기환경학회 2012 Asian Journal of Atmospheric Environment (AJAE) Vol.6 No.4

Aerosol concentrations at the CC-Lag site in the Teshio Experimental Forest increased from winter to spring and sometimes showed extremely high values associated with Kosa and/or forest-fire events. The range and mean of the mass concentrations of aerosol chemical species were as follows: total particulate mass, 1.2-29, 5.0; elemental carbon, 0.061-2.2, 0.43; organic carbon, 0.059-3.5, 0.79; and sulfate,0.12-6.2, 1.8 μg/m3. The total masses of the deposited particles on hybrid larch and on bamboo leaves were approximately 35 and 30 μg/cm2, respectively. The amounts of soil particles on the leaves were 6 μg/cm2 for the upper part of hybrid larch, 2μg/cm2 for the lower part of hybrid larch, and 1 μg/cm2 for Sasa bamboo leaves. The amounts of deposited black carbon were 2.3 μg/cm2 for the upper part of hybrid larch, 0.6 μg/cm2 for the lower part of hybrid larch, and 0.2 μg/cm2 for Sasa bamboo leaves. Half of the total deposited particular mass was attached on the hybrid larch; however, most of the total deposited mass was adhered on the Sasa bamboo leaves. Regardless of the species, there tend to be more deposited particles on the leaves in the upper part than in the lower part, with only a few meters height difference. Comparing the composition of the deposited particles to that of the atmospheric aerosols without any size cut, the fractions of water-soluble material sulfate and sea salt in the deposited aerosols were about one tenth and one hundredth lower than that in the aerosols, respectively. On the basis of the measured concentration and the deposited amount on leaves, the deposition velocity of black carbon was estimated to be approximately 0.5 cm/s. Aerosol concentrations at the CC-Lag site in the Teshio Experimental Forest increased from winter to spring and sometimes showed extremely high values associated with Kosa and/or forest-fire events. The range and mean of the mass concentrations of aerosol chemical species were as follows: total particulate mass, 1.2-29, 5.0; elemental carbon, 0.061-2.2, 0.43; organic carbon, 0.059-3.5, 0.79; and sulfate,0.12-6.2, 1.8 μg/m3. The total masses of the deposited particles on hybrid larch and on bamboo leaves were approximately 35 and 30 μg/cm2, respectively. The amounts of soil particles on the leaves were 6 μg/cm2 for the upper part of hybrid larch, 2μg/cm2 for the lower part of hybrid larch, and 1 μg/cm2 for Sasa bamboo leaves. The amounts of deposited black carbon were 2.3 μg/cm2 for the upper part of hybrid larch, 0.6 μg/cm2 for the lower part of hybrid larch, and 0.2 μg/cm2 for Sasa bamboo leaves. Half of the total deposited particular mass was attached on the hybrid larch; however, most of the total deposited mass was adhered on the Sasa bamboo leaves. Regardless of the species, there tend to be more deposited particles on the leaves in the upper part than in the lower part, with only a few meters height difference. Comparing the composition of the deposited particles to that of the atmospheric aerosols without any size cut, the fractions of water-soluble material sulfate and sea salt in the deposited aerosols were about one tenth and one hundredth lower than that in the aerosols, respectively. On the basis of the measured concentration and the deposited amount on leaves, the deposition velocity of black carbon was estimated to be approximately 0.5 cm/s.