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11.
Toshihiko Hashimoto Takanori Ishii Naoyuki Okada Masahiro Itoh 《Journal of sports sciences》2015,33(13):1356-1365
In this study, eight judo athletes who are major candidates for the Japan national team were recruited as participants. Kinematic analysis of exemplary ukemi techniques was carried out using two throws, o-soto-gari, a throw linked to frequent injury, and o-uchi-gari. The aim of this study was to kinematically quantify the timing patterns of exemplary ukemi techniques and to obtain kinematic information of the head, in a sequence of ukemi from the onset of the throw to the completion of ukemi. The results indicated that the vertical velocity with which the uke’s head decelerated was reduced by increasing the body surface exposed to the collision with the tatami and by increasing the elapsed time. In particular, overall upper limb contact with the tatami is greatly associated with deceleration. In o-soto-gari, the impulsive force on the faller’s head as the head reached the lowest point was 204.82 ± 19.95 kg m · s–2 while in o-uchi-gari it was 118.46 ± 63.62 kg m · s–2, z = ?1.75, P = 0.08, and it did present a large-sized effect with r = 0.78. These findings indicate that the exemplary o-soto-gari as compared to o-uchi-gari is the technique that causes more significant damage to the uke’s head. 相似文献
12.
Noriko Hashimoto Kaori Ushitora Mari Morioka Terunori Motegi Kazue Tanaka Mieko Tashiro 《Sex education》2017,17(4):386-398
This study aimed to evaluate changes in the attitudes of Japan’s post-war youth towards gender equality and sexuality, and to examine whether these attitudes bore a relationship to school education. Different generations were delineated based on changes in courses of study and year of birth, and semi-structured interviews were conducted enquiring about experiences and opinions during secondary school days. We examined sexuality education in both junior high school (ages 12–15 years) and high school (15–18 years), views on premarital sex, views on marriage and divorce, and views on gender roles. Fifty-three survey participants were involved in the study: 30 women and 23 men. The characteristics of each generation were examined in relation to corresponding courses of study and the textbooks available in junior high and high schools, identifying both homologies and differences between the messages courses contained and the expressed beliefs of different generations of informants. 相似文献
13.
Replica obtained from micromolds patterned by simple photolithography has features with uniform heights, and attainable microchannels are thus quasi-two-dimensional. Recent progress in three-dimensional (3D) printing has enabled facile desktop fabrication of molds to replicate microchannels with varying heights. We investigated the replica obtained from four common techniques of 3D printing—fused deposition modeling, selective laser sintering, photo-polymer inkjet printing (PJ), and stereolithography (SL)—for the suitability to form microchannels in terms of the surface roughness inherent to the mechanism of 3D printing. There have been limited quantitative studies that focused on the surface roughness of a 3D-printed mold with different methods of 3D printing. We discussed that the surface roughness of the molds affected (1) transparency of the replica and (2) delamination pressure of poly(dimethylsiloxane) replica bonded to flat glass substrates. Thereafter, we quantified the accuracy of replication from 3D-printed molds by comparing the dimensions of the replicated parts to the designed dimensions and tested the ability to fabricate closely spaced microchannels. This study suggested that molds printed by PJ and SL printers were suitable for replica molding to fabricate microchannels with varying heights. The insight from this study shall be useful to fabricate 3D microchannels with controlled 3D patterns of flows guided by the geometry of the microchannels. 相似文献
14.
Toshihiko?HayamizuEmail author Kazuyo?Kino Kuniko?Takagi Eng-Hai?Tan 《Asia Pacific Education Review》2004,5(2):127-135
The purpose of this study is to examine whether a new construct “Assumed-Competence based on undervaluing others (AC)” could
be a determinant of anger and sadness for contemporary Japanese adolescents. A set of questionnaires was administered to 584
high school students, who rated ACS-2 (Assumed-Competence Scale, second version), Rosenberg’s self-esteem scale, in relation
to their perceived emotional reactions toward certain negative personal and social events, and other scales. The results indicated
that the students who got angry at personal events were likely to have high AC. However, those who felt neither anger nor
sadness in relation to such social events were likely to have high AC. The role of AC in emotional reactions and suggestions
for future research was also discussed. 相似文献