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1.
Özgür Kilic Haruhito Aoki Rasmus Haagensen Claus Jensen Urban Johnson Gino M. M. J. Kerkhoffs 《European Journal of Sport Science》2017,17(10):1328-1334
The aim of the study was twofold, namely (i) to determine the prevalence of symptoms of common mental disorders (CMDs) among current and retired professional football and handball players and (ii) to explore the relationship of psychosocial stressors with the outcome measures under study. A total of 1155 players were enrolled in an observational study based on a cross-sectional design. Questionnaires based on validated scales were set up and distributed among current and retired professional football and handball players by the Danish football and handball players’ union. In professional football, the highest prevalence (4 weeks) of symptoms of CMDs was 18% and 19% for anxiety/depression among current and retired players, respectively. In professional handball, the highest prevalence (4 weeks) of symptoms of CMDs was 26% and 16% for anxiety/depression among current and retired players, respectively. For both the current and retired professional football and handball players, a higher number of severe injuries and recent adverse life events (LE) were related to the presence of symptoms of CMD. Players exposed to severe injuries and/or recent adverse LE were 20–50% times more likely to report symptoms of CMD. The results suggest that it is possible to recognize the population of professional athletes that are more likely to develop symptoms of CMD. This could create the opportunity to intervene preventively on athletes that suffered from severe injury and/or recent adverse LE that could lead to a faster and safer recovery and psychological readiness to return to play. 相似文献
2.
Colin Latchem Insung Jung Kumiko Aoki Ali Ekrem Ozkul 《British journal of educational technology : journal of the Council for Educational Technology》2008,39(4):610-630
Japan and Korea have highly developed information and communications technology infrastructures and have recently reformed their higher education systems and encouraged e-transformation. However, Japanese universities have not embraced e-learning as wholeheartedly as their Korean counterparts. The paper concludes that this is due to governmental and institutional failure to develop a cogent vision and strategic plan for e-learning, to recognise the need for fundamental shifts in organisational cultures and structures and pedagogy and to provide training, funding, recognition and reward for such development. It attributes this to differences in the cultural perspectives, values and customs of the two countries' policy makers, managers and faculty members. The findings are seen to hold important lessons for other countries embarking on e-transformation. 相似文献
3.
钢梁与钢筋混凝土桥墩的新型刚节点联结形式及其静载反复试验 总被引：1，自引：0，他引：1
提出了一种新型的桥梁钢梁与钢筋混凝土桥墩的刚节点联结形式．刚节点内部构件间的连接全部采用高强度螺栓连接方式且施工方便，能够较理想地将上部结构弯矩传递到下部结构，剪力传递钢板承受了大部分的水平剪力．通过静荷载反复试验获得了有关这种新型结构性能方面的有效数据，试验结果表明该结构内部应力传递路径明确，并具有良好的抗震性能．有关结构的强度和塑性变形的计算及试验结果均表明，这种结构即使在发生很大变形的情况下，也能保持良好的能量吸收功能且没有出现因应力集中而发生的局部曲屈现象．由于避免使用了价格昂贵的支座，采用这种新型组合结构形式不但具有良好的抗震性能，同时可以降低桥梁的建设成本． 相似文献
4.
In the Midst of Doubled Imaginaries: The Pacific Community as Diversity and as Difference 总被引：1，自引：0，他引：1
Ted T. Aoki 《Interchange》1999,30(1):27-38
How shall we understand the signified "community" as in a Pacific Community? Conventional understanding of "community" privileges community understood as diversity, a collective of multiple identifiers of cultures and nations (as in multiculturalism or multinationalism). Postcolonialists, like Stuart Hall and Homi Bhabha, claim that such imaginary is inscribed in "democractic liberalism," suppressing, concealing, and containing the imaginary of "community as difference." In this article, the author calls upon readers to move boldly into the interspace midst these two imaginaries, and claims that though it is a site of ambiguity, ambivalence, and uncertainty, it may be a site of generative possibilities and hope for newness, a site of becoming in struggle. 相似文献
5.
Ages at menarche and selected menstrual characteristics in 204 nonathletes, 253 high school athletes, 386 college athletes, and 40 young top athletes of Japan were investigated by questionnaire. Data from the questionnaire have confirmed (a) the ascending trend of ages of menarche with advancement of training and competitive level, and (b) the diversity of mean age at menarche by sport in a given level. The menarcheal orders by sport in the literature have been found to be strikingly similar to those found in the present data. We offer the hypothesis that ages at menarche and selected menarcheal characteristics (a) are brought about by selection in the socialization process into sports participation, and (b) reflect the diversity of suitable physiques by sport. Also, the higher the training and competitive level, the more likely the occurrence of menstrual irregularity (cycle length and period duration) and/or dysmenorrhea (backache). 相似文献
6.
The aim of the present study was to examine how the recovery of physiological functioning of the leg muscles after high-intensity eccentric exercise such as downhill running could be promoted by aqua exercise for a period until the damaged muscle had recovered almost completely. Ten male long-distance runners were divided equally into an aqua exercise group and a control group. From the first day (Day 0) to the fourth day (Day 3), the participants completed a questionnaire on muscle soreness, and serum creatine kinase activity, muscle power, flexibility, whole-body reaction time and muscle stiffness were measured. After measurements on Day 0, the participants performed downhill running (three 5 min runs with a 5 min rest interval at -10%, 335.7 +/- 6.1 m . min-1). The aqua exercise group performed walking, jogging and jumping in water on three successive days following the downhill running on Day 0 for 30 min each day. Muscle power was reduced on Day 1 in the control group (P < 0.05). Muscle soreness in the calf on Day 3 was greater in the control group than that in the aqua exercise group (P < 0.05). In the aqua exercise group, muscle stiffness in the calf was less than that in the control group over 4 days (time main effect: P < 0.05; group x time interaction: P < 0.05). We conclude that aqua exercise promoted physiological functioning of the muscles in the legs after high-intensity downhill running for a period until the damaged muscles had recovered almost completely. 相似文献
7.
Miwa Aoki Takeuchi 《学习科学杂志》2016,25(3):411-437
This ethnographic study examined students’ opportunities to learn in linguistically diverse mathematics classrooms in a Canadian elementary school. I specifically examined the contextual change of group work, which influenced opportunities to learn for newly arrived English language learners (ELLs). Based on analyses of video-recorded interactions, this study revealed a shift in these ELLs’ opportunities to learn from when they worked with teacher-assigned peers to when they worked with friends. In both settings, ELLs tended to be positioned as novices. However, when working with friends, they accessed a wider variety of work practices. In friend groups, ELLs were occasionally positioned as experts and had more opportunities to raise questions and offer ideas. In contrast, when working with teacher-assigned peers, ELLs tended to remain in the position of being helped. In some teacher-assigned groups, interactions were characterized as authoritative, and ELLs’ contributions and ideas were rejected or neglected without relevant justifications or mathematical authority established by their peers. The findings contribute to ongoing discussions on group work and friendship in linguistically diverse classrooms. 相似文献
8.
Boasting over 6000 objects, including replicas of a western hardware store, a frontier stage stop, and a late nineteenth-century industrial factory, the Cody Firearms Museum, located at the Buffalo Bill Historical Center in Cody, Wyoming, is “the largest and most important collection of American firearms in the world.” 1 The museum, which creates a decidedly visual space through its near-exclusive engagement with looking, employs an aesthetic of domestication and sterility to frame firearms for museumgoers. Even as it transforms guns into inert objects of visual pleasure, the museum cannot fully erase the history of violence and colonial conquering in which guns played a starring role. The museum's rhetorical effectivity/affectivity, then, turns upon the unique play of presence and absence. 相似文献
9.
Recent advances in technologies for neuroscientific research enable us to investigate the neurobiological substrates of the human ethical sense. This article introduces several findings in “the brain science of ethics” obtained through brain-observation and brain-manipulation approaches. Studies over the past decade have revealed that several brain structures associated with emotion processing and the ability to understand the minds of others play key roles in the human ethical sense. We also discuss current limitations in studying the brain mechanisms of ethics: Although the true significance of the human ethical sense lies in social interactions, most neuroimaging studies so far have not captured the rich context of the social interactions that exist in the real world. The latest experimental paradigms focusing on “neural resonance” across brains, as well as a newly developed neuroimaging instrument that allows a wide range of social interactions under natural situations, are promising to overcome this limitation. Applications of such approaches and instruments to study the human ethical sense will improve our understanding of the complex nature of the human ethical sense. 相似文献
10.
The effective numerical method proposed by Shimamuraet al. (2007) is extended to predict the ball motion in a draw shot as well as a follow shot in billiards. The extended method is
verified experimentally using a high speed camera. It is observed in the experiment that a ball rotates backwards with a lot
of slip (between ball and table) at first and then rotates forwards in a draw shot. Such a ball motion is predicted quantitatively
with the numerical method. Numerical simulations are performed to investigate the effects of material properties of a cue
on ball behaviour in follow and draw shots and it is found that the impact force increases with increasing stiffness of the
shaft in both follow and draw shots, while its duration time is shortened with increasing wave velocity in the shaft for both
shots. It is also found that there is a certain shaft stiffness that gives the minimum ball centre velocity, the minimum angular
velocity, the minimum slip velocity between ball and table and also the minimum time when the backward rotation changes to
a forward one in a draw shot, while the ball centre velocity and the angular velocity increase with increasing shaft stiffness
in a follow shot. 相似文献