首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   440篇
  免费   6篇
教育   313篇
科学研究   38篇
各国文化   8篇
体育   66篇
综合类   1篇
文化理论   4篇
信息传播   16篇
  2022年   3篇
  2021年   5篇
  2020年   6篇
  2019年   18篇
  2018年   19篇
  2017年   22篇
  2016年   15篇
  2015年   9篇
  2014年   22篇
  2013年   87篇
  2012年   16篇
  2011年   12篇
  2010年   10篇
  2009年   21篇
  2008年   16篇
  2007年   14篇
  2006年   20篇
  2005年   12篇
  2004年   12篇
  2003年   6篇
  2002年   15篇
  2001年   8篇
  2000年   9篇
  1999年   5篇
  1998年   7篇
  1997年   8篇
  1996年   7篇
  1995年   8篇
  1994年   6篇
  1993年   4篇
  1992年   3篇
  1991年   1篇
  1990年   1篇
  1988年   2篇
  1987年   2篇
  1986年   1篇
  1985年   2篇
  1984年   1篇
  1983年   3篇
  1982年   2篇
  1981年   2篇
  1978年   2篇
  1975年   1篇
  1972年   1篇
排序方式: 共有446条查询结果,搜索用时 12 毫秒
141.
Rob Breton 《Media History》2013,19(3):244-256
This paper examines police intelligence columns in Chartist newspapers. Asking why Chartist papers would care to document working-class criminal activity, given that Chartists maintained that the ‘people’ were vote-ready, the paper argues that the columns show that crime and class are in fact not integrally related. Grouping well-to-do defendants with working-class counterparts allowed Chartists to demonstrate that money or property in themselves do not make for good citizenship and the right to vote.  相似文献   
142.
Abstract

Innovation which is generated in a specific sector or prepared for it but finds application in others is called transsectorial innovation. This is a subject which, up to now, has attracted very little attention; yet it deserves a thorough examination. Indeed, the incidence of transsectorial migrations is very much on the increase and its impact on industry strongly felt: It generates a multiplicity of new products, causes changes in the location of production units and affects their organization.

In this report, the concept of innovation is addressed and studied in depth, then looked at in the context of long‐term economic perspectives (I). Next the emergence of transsectorial innovations and their pervasive influence are described (II). Lastly, the effects on industry (size, location, organization, products) are examined (III).

The industrial revolution which is beginning represents much more than what is generally expected. It will cause a complete upheaval, not only in the productive system, but also, probably, in the whole range of human activities. The transsectorial phenomenon has a large role to play in the dawning of this new era.  相似文献   
143.
As a wide range of values has been reported for the relative energetics of 400-m and 800-m track running events, this study aimed to quantify the respective aerobic and anaerobic energy contributions to these events during track running. Sixteen trained 400-m (11 males, 5 females) and 11 trained 800-m (9 males, 2 females) athletes participated in this study. The participants performed (on separate days) a laboratory graded exercsie test and multiple race time-trials. The relative energy system contribution was calculated by multiple methods based upon measures of race [Vdot]O2, accumulated oxygen deficit (AOD), blood lactate and estimated phosphocreatine degradation (lactate/PCr). The aerobic/anaerobic energy system contribution (AOD method) to the 400-m event was calculated as 41/59% (male) and 45/55% (female). For the 800-m event, an increased aerobic involvement was noted with a 60/40% (male) and 70/30% (female) respective contribution. Significant (P <?0.05) negative correlations were noted between race performance and anaerobic energy system involvement (lactate/PCr) for the male 800-m and female 400-m events (r = ? 0.77 and ??0.87 respectively). These track running data compare well with previous estimates of the relative energy system contributions to the 400-m and 800-m events. Additionally, the relative importance and speed of interaction of the respective metabolic pathways has implications to training for these events.  相似文献   
144.
The aim of the present study was to quantify the contributions of the aerobic and anaerobic energy systems to 1500- and 3000-m track running events during all-out time-trials performed individually on a synthetic athletic track. Ten 3000-m (8 males, 2 females) and fourteen 1500-m (10 males, 4 females) trained track athletes volunteered to participate in the study. The athletes performed a graded exercise test in the laboratory and two time-trials over 1500 or 3000?m. The contributions of the energy systems were calculated by measures of race oxygen uptake, accumulated oxygen deficit (AOD), race blood lactate concentration, estimated phosphocreatine degradation and some individual muscle metabolite data. The relative aerobic energy system contribution (based on AOD measures) for the 3000?m was 86% (male) and 94% (female), while for the 1500?m it was 77% (male) and 86% (female). Estimates of anaerobic energy expenditure based on blood lactate concentrations, while not significantly different (P?>?0.05), were generally lower compared with the AOD measures. In conclusion, the results of the present study conform with some recent laboratory-based measures of energy system contributions to these events.  相似文献   
145.
Abstract

Fundamental movement skills (FMS) have been assessed in children in order to investigate the issues of the low proportion of children who meet physical activity (PA) guidelines and rising levels of obesity. The aim of this research was to identify whether previous or current FMS level is a better predictor of PA levels and weight status in children. In January 2012 (year 1), 281 children were recruited from one primary school in the West Midlands, UK. Children performed eight FMS three times, which were videoed and assessed using a subjective checklist. Sprint speed and jump height were measured objectively. Height and mass were measured to calculate the body mass index to determine the weight status. Skinfold calliper readings were used to calculate body fat percentage. One year later, in January 2013, all these tests were repeated on the same children, with the additional collection of PA data via the use of pedometers. Following multiple linear regression, it was identified that prior mastery in FMS was a better predictor of current PA, whereas current FMS was a better predictor of current weight status. Overall, FMS mastery is needed in childhood to be able to participate in PA and maintain a healthy weight status.  相似文献   
146.
Previous research suggests that adolescents with learning disabilities (LD) are less accurate in predicting academic performance than normally achieving (NA) adolescents and display a tendency to overestimate their level of performance (e.g., Klassen, 2007). However, no studies have been conducted investigating whether this overestimation is specific to academic contexts or a phenomenon that extends across domains. Ninety-four adolescents (46 LD, 48 NA) predicted their performance on a spelling task and on a ball-throwing task. Results revealed group differences in performance calibration across domains with adolescents with LD showing an overestimation of ability on the spelling and ball-throwing tasks, and NA adolescents demonstrating more precise self-appraisals. Additionally, the accuracy of non-academic performance predictions remained stable with increasing difficulty in the NA group whereas the adolescents with LD demonstrated a decrease in accurate performance prediction as the difficulty level increased.  相似文献   
147.
This research provides policy-makers, researchers, and educators at all levels with a glimpse of the contextual influence on effective school improvement (ESI) in 8 European countries. What are the factors at the contextual level, particularly at the national level, which influence ESI? Are there any similarities or differences between the influences they exert on ESI in different countries? Can common traits be identified? These are the core questions this paper tries to explore. It has drawn on insights from 5 areas of research: school effectiveness; school improvement; curriculum; public choice (marketization); organization, organizational learning, and learning organization. This yields a “goal – pressure – support” conceptual framework accompanied by 10 contextual factors and 48 indicators. Given the original conceptual framework and the empirical support of 31 case studies contributed by 8 European countries, the findings of this study may have significant implications for policy, practice, school effectiveness, and school improvement.  相似文献   
148.
Gender inequalities in schools have implications for life chances, emotional well-being and educational policies and practices, but are apparently resistant to change. This paper employs Judith Butler’s conceptualisation of performativity in a study of young people and consumption to provide insights into gendered inequities. It argues that how the young people ‘do’ gender in focus groups frequently involves the discussion of young women’s bodies and clothes in ways that are ‘culturally intelligible’. The focus on young women’s bodies produced joking relationships and a taken-for-granted understanding of gender in some same-sex interactions, but sometimes created tension and divisions in mixed-gender groups. Discussions of sexualisation in single-sex and mixed-sex groups were similarly emotionally loaded. The paper argues that attention to gender inequalities requires detailed attention to the differential power relations in which boys express desires to control feminine bodies and girls police their own and other girls’ bodies. Methodologically, the paper suggests that focus group discussions constitute an ethnographic site for analysis and that researchers co-construct young people’s narratives of embodied gender practices in ways that mediate young people’s gendered performances.  相似文献   
149.
In this study, we examine the teaching-related stress, self-efficacy, and occupational commitment of preservice teachers from two culturally western and two culturally eastern countries. The sample included 1,187 participants from Canada (n?=?379), England (n?=?203), Hong Kong (n?=?211), and Thailand (n?=?394). Self-efficacy partially reduced (mediated) the effect of stress from student behavior and from workload on commitment in three of four contexts. Mediation tests with country as moderator revealed significant differences in the strength of the mediating effect across the four contexts. The results suggest that teachers’ self-efficacy changes the way in which work stress influences the commitment to continue teaching, although cultural milieu influences the nature of the relationship according to context.  相似文献   
150.
Norbert Elias makes technical progress one of the markers of the state of civilisation. It is from this viewpoint that we would like to return to the question of sport, a fundamental part in Elias' civilising process, which also constitutes, a contrario, one of the most ambiguous aspects of ‘technical progress’ and its relation to violence, to the articulation of a double abuse of instrumental rationality. On the one hand the infinite improvement of human possibilities (records, performance) which leads to the recognised risks of exploitation and the ultra-sophisticated controlling of athletes (extreme pressure, over-training) as a corollary of the temptation to over-stimulate athletic potential as a result of the uncontrolled use of victory techniques (cheating, doping, violence). On the other hand, the stakes involved in the production of a vast spectacle with ideological, sociopolitical and socio-economic overtones which lead to technological manipulations. Both these tendencies overlap, and furthermore cannot be isolated from, a more general context of the technification of the social, at the heart of which instrumental rationality constitutes the first example of violence. This three-fold observation constitutes the basis of the argument set out in this paper.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号