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1.
李武明 《通化师范学院学报》2003,24(4):5-7
以Clifford代数为工具，讨论Minkowski平面的几何性质，指明应用Clifford代数在计算机上实现Minkowski几何研究的可行性。 相似文献
2.
ROGER SÄLJÖ 《教育心理学家》2013,48(3):202-208
Over the past decades research on learning has become more diverse and complex. The concern expressed by Alexander, Schallert, and Reynolds (2009/this issue) is that this diversity of theoretical perspectives has resulted in a fragmentation that is destructive to the field. Although it is important to engage in explicit discussions of how learning is construed in different traditions, Alexander et al. do not give sufficient recognition to the significant epistemological and theoretical differences between traditions; differences that make them incompatible in important respects, for instance, with respect to their units of analysis. An acceptance of incompatibilities in perspectives is not necessarily a problem. In fact, such a situation may, if the debates are grounded in a mutual acceptance of the diverse manners in which knowing and learning may be theorized, give us a richer frame of reference from which to analyze learning in its various manifestations in complex societies. 相似文献
3.
李端 《邯郸职业技术学院学报》2005,18(1):33-34
在香港经济经历数次冲击之后，中央政府为促进内地和香港特别行政区经济的共同繁荣与发展，加强双方与其他国家和地区的经贸联系，达成了《内地与香港关于建立更紧密经贸关系的安排》(简称CEPA)。CEPA的实施使香港和内地的房地产业取长补短，优势互补，尤其令内地的房地产业加快了由相对“封闭”走向开放、走向国际化的步伐。 相似文献
4.
LJ Slovin 《Sex education》2016,16(5):520-533
In this paper, I draw on observations from sexual health workshops in an elementary school classroom in Vancouver, Canada and friendship pair interviews with four boys who attended the workshops. I examine how the educators organising the workshops constructed sexual health, highlighting their reliance on both a ‘gay is okay’ and a scientific discourse. I argue that by locating their discussion of homosexuality within a values framework and striving to depict gay relationships as acceptable, they simultaneously constituted homosexuality as requiring acceptance. Likewise, by subsuming references to heterosexuality within their lesson on (hetero)sexual reproduction, they framed heterosexuality as an always already accepted scientific fact. Having set the scene in this way, I then explore the ways the boys both took up and deviated from these discourses when constructing their own narratives. 相似文献
5.
李宏图 《华东师范大学学报(哲学社会科学版)》2002,34(2):3-11
托克维尔出身于贵族家庭，但是他却理性地认为贵族制必然衰落，民主社会必然到来，民主是现代社会的重要特征。于是，托克维尔分析了贵族式自由的特征、价值、弊端以及民主的本质。他相信在一个民主的时代，自由不可能建立在贵族政治体制的基础之上；与此同时，他特别感兴趣的是如何避免民主专制主义，以及如何避免以民主的名义破坏自由。因此，托克维尔期望即将到来的社会不仅是一个民主的社会，而且是一个自由的社会；在这个社会中，民主和自由的结合会得以实现。 相似文献
6.
论新时期女性青年的体育文化创造 总被引：1，自引：0，他引：1
当代城市取向的深刻变化，使体育化建设迅猛发展。新时期青年女性通过自身的性别优势在自觉与不自觉中创造着独特的现代体育化，日益成为体育化的重要载体和创生，是富有特殊聚焦能力的体育化创造群体。 相似文献
7.
人类面临的全球性问题构成了人类教育的氛围,人类的困境人人都必须分担,人类的生存和发展同样取决于各国人民和所有国家间的合作,国际教育已成为建树道义和增强人类团结的最有力的工具。２１世纪的国际教育应当对一切社会里进行的人类价值观的教学和实践确定一个普适的方向,以促成一种新的同心同德与合作的化的形成,追求人的价值应成为２１世纪国际教育的基本目标,以人为基础的学习应是２１世纪国际教育的基本内容和方法。 相似文献
8.
Da Silva JF Guglielmo LG Carminatti LJ De Oliveira FR Dittrich N Paton CD 《Journal of sports sciences》2011,29(15):1621-1628
The aim of this study was to assess the validity (Study 1) and reliability (Study 2) of a novel intermittent running test (Carminatti's test) for physiological assessment of soccer players. In Study 1, 28 players performed Carminatti's test, a repeated sprint ability test, and an intermittent treadmill test. In Study 2, 24 players performed Carminatti's test twice within 72 h to determine test-retest reliability. Carminatti's test required the participants to complete repeated bouts of 5 × 12 s shuttle running at progressively faster speeds until volitional exhaustion. The 12 s bouts were separated by 6 s recovery periods, making each stage 90 s in duration. The initial running distance was set at 15 m and was increased by 1 m at each stage (90 s). The repeated sprint ability test required the participants to perform 7 × 34.2 m maximal effort sprints separated by 25 s recovery. During the intermittent treadmill test, the initial velocity of 9.0 km · h(-1) was increased by 1.2 km · h(-1) every 3 min until volitional exhaustion. No significant difference (P > 0.05) was observed between Carminatti's test peak running velocity and speed at VO(2max) (v-VO(2max)). Peak running velocity in Carminatti's test was strongly correlated with v-VO(2max) (r = 0.74, P < 0.01), and highly associated with velocity at the onset of blood lactate accumulation (r = 0.63, P < 0.01). Mean sprint time was strongly associated with peak running velocity in Carminatti's test (r = -0.71, P < 0.01). The intraclass correlation was 0.94 with a coefficient of variation of 1.4%. In conclusion, Carminatti's test appears to be avalid and reliable measure of physical fitness and of the ability to perform intermittent high-intensity exercise in soccer players. 相似文献
9.
Juliano Fernandes-da-Silva Carlo Castagna Anderson Santiago Teixeira Lorival José Carminatti Luiz Guilherme Antonacci Guglielmo 《Journal of sports sciences》2016,34(24):2238-2245
ABSTRACTThe aim of this study was to examine the relationship between the peak velocity derived from the Carminatti Test (T-CAR) (PVT-CAR) and physical match performance in young soccer players. Thirty-three youth soccer players were recruited from 2 non-professional clubs. Friendly matches and small-sided game were performed. Physical match demands were assessed using Global Positioning System (GPS) technology. On a separate occasion, the players were submitted to the T-CAR. Players were categorised into 3 groups based on their T-CAR performance: Low (PVT-CAR ≤ P33), Intermediate (P33 > PVT-CAR < P66) and High (PVT-CAR ≥ P66). The PVT-CAR (15.5 ± 0.7 km·h?1) was significantly related to high-intensity activities (HIA; r = 0.78, P < 0.001), high-intensity running (HIR; r = 0.66, P < 0.001), sprinting (r = 0.62, P < 0.001) and total distance (TD) covered (r = 0.47, P < 0.01) during friendly matches. The PVT-CAR was strongly correlated with the amount of HIA (r = 0.81, P < 0.001), HIR (r = 0.85, P < 0.001) and TD covered (r = 0.81, P < 0.001) during small-sided game. No significant correlation was observed between the PVT-CAR and distance of sprinting (r = 0.49, P = 0.067) during small-side game. Furthermore, players in the High group covered significantly more TD (10%) and did more HIA (42%), sprinting (31%) and HIR (25%) during friendly matches compared to the players classified as having Low performance on the T-CAR. These differences still remained after adjusting for chronological age (CA), maturity and body size. In conclusion, the current study gives empirical support to the ecological and construct validity of this novel field test (T-CAR) as an indicator of match-related physical performance in young soccer players during pubertal years. 相似文献
10.
Juliano F. Da Silva Luiz G.A. Guglielmo Lorival J. Carminatti Fernando R. De Oliveira Naiandra Dittrich Carl D. Paton 《Journal of sports sciences》2013,31(15):1621-1628
Abstract The aim of this study was to assess the validity (Study 1) and reliability (Study 2) of a novel intermittent running test (Carminatti's test) for physiological assessment of soccer players. In Study 1, 28 players performed Carminatti's test, a repeated sprint ability test, and an intermittent treadmill test. In Study 2, 24 players performed Carminatti's test twice within 72 h to determine test–retest reliability. Carminatti's test required the participants to complete repeated bouts of 5 × 12 s shuttle running at progressively faster speeds until volitional exhaustion. The 12 s bouts were separated by 6 s recovery periods, making each stage 90 s in duration. The initial running distance was set at 15 m and was increased by 1 m at each stage (90 s). The repeated sprint ability test required the participants to perform 7 × 34.2 m maximal effort sprints separated by 25 s recovery. During the intermittent treadmill test, the initial velocity of 9.0 km · h?1 was increased by 1.2 km · h?1 every 3 min until volitional exhaustion. No significant difference (P > 0.05) was observed between Carminatti's test peak running velocity and speed at VO2max (v-VO2max). Peak running velocity in Carminatti's test was strongly correlated with v-VO2max (r = 0.74, P < 0.01), and highly associated with velocity at the onset of blood lactate accumulation (r = 0.63, P < 0.01). Mean sprint time was strongly associated with peak running velocity in Carminatti's test (r = ?0.71, P < 0.01). The intraclass correlation was 0.94 with a coefficient of variation of 1.4%. In conclusion, Carminatti's test appears to be avalid and reliable measure of physical fitness and of the ability to perform intermittent high-intensity exercise in soccer players. 相似文献