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   272篇
  免费   3篇
教育   206篇
科学研究   18篇
各国文化   2篇
体育   17篇
文化理论   1篇
信息传播   31篇
  2023年   2篇
  2022年   3篇
  2021年   4篇
  2020年   6篇
  2019年   5篇
  2018年   14篇
  2017年   17篇
  2016年   20篇
  2015年   10篇
  2014年   14篇
  2013年   75篇
  2012年   6篇
  2011年   11篇
  2010年   5篇
  2009年   1篇
  2008年   9篇
  2007年   2篇
  2006年   4篇
  2005年   2篇
  2004年   4篇
  2003年   1篇
  2002年   7篇
  2001年   5篇
  2000年   6篇
  1999年   8篇
  1998年   2篇
  1997年   3篇
  1996年   6篇
  1995年   4篇
  1994年   3篇
  1993年   1篇
  1992年   1篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1982年   1篇
  1981年   1篇
  1976年   1篇
  1975年   1篇
  1972年   2篇
  1935年   1篇
  1920年   1篇
  1917年   1篇
排序方式: 共有275条查询结果,搜索用时 0 毫秒
11.
Adequate dietary strategies are essential for the successful participation in ultra-endurance races. The aim of this study was to evaluate and compare the energy and water intakes of participants during three different mountain ultra-endurance runs. The study took place at the “Ultra Mallorca Serra de Tramuntana” (Mallorca, Spain), an ultra-endurance mountain event with runners participating either in a 44-km (Marathon, n = 51), a 67-km (Trail, n = 109) or a 112-km (Ultra, n = 53) run competition. Participants in the study answered a questionnaire focused on the nutritional intake within an hour after finishing the competition. Mean energy intake during the competitions was 183 kcal · h¯1, with an average carbohydrate intake of 31 g · h¯1 (52.1% of participants consumed less than 30 g · h¯1). No significant differences between competitions were found in these parameters. However, a higher percentage of energy from lipids in participants in the Trail and the Ultra was found (P = 0.034). Furthermore, significant differences were observed in water intake per hour of competition (P = 0.039), with the lowest value for the intake during the Ultra competition. In conclusion, the majority of the participants in the study present low carbohydrate intakes. However, fluid intake seems to be adequate. Different distances did not significantly influence the participants’ nutritional strategies.  相似文献   
12.
13.
This article presents detailed findings from the qualitative or interpretive phase of a mixed-methods case study focusing on the professional identities and lived experiences of research among six lecturers working in different capacities across the field of education in a ‘teaching-led’ higher education institution. Building upon the quantitative phase published earlier in this journal, factors both facilitating (e.g. research infrastructure, support for doctoral study) and constraining (e.g. time, space, workload, critical mass, ‘practitioner bond professionalism’, ‘organisational socialisation’, networks, roles and responsibilities, power relationships) research activity are identified. These are considered in the context of an institution often recruiting staff with ‘non-traditional’ backgrounds from within ‘the professions’ (e.g. from schools and colleges without doctorates) looking to become more ‘research-informed’ and establish a more vibrant and sustainable research culture. Recommendations for further development focus on ‘identity transitions’ and ‘cultural transformation’, emphasising the importance of research leadership and its distribution throughout the organisation. With current trends towards the apparent intensification and prioritisation of research activity over teaching, findings are considered particularly important for institutions of a similar nature to the one described here, for education departments in larger institutions also on similar journeys, and in light of an anticipated increase in demand for research activity arising from the expansion of higher education provision in further education and the private sector, where recruitment from within ‘the professions’ to teach across ‘vocational’ programmes is common.  相似文献   
14.
15.
University Technical Colleges (UTCs) are newly established (since 2010–11) technical and vocational secondary schools in England, catering for young people aged 14–19. The schools focus strongly on delivering vocational, alongside Science, Technology, Engineering and Mathematics (STEM)-focused academic, qualifications. The colleges have been introduced as a new means of improving technical and vocational education and training—a sector which in England has faced problems of low quality and low esteem—and in a wider international context of STEM-trained worker shortages. University Technical Colleges have been advertised as offering state-of-the-art vocational learning, involving access for students to the latest equipment and technologies in key industrial sectors, alongside extensive project-based learning in partnership with employers. However, how have UTC students fared in these respects since the beginning of the coronavirus pandemic and associated lockdowns in 2020? In this paper we report on results from a survey of 252 students across two UTCs in England, exploring the technical and vocational learning experiences of these students during the exceptional 2019–20 academic year. Findings from the survey reveal lost learning and training opportunities during the pandemic, particularly where courses with practical elements relied on specific equipment and facilities that became inaccessible during lockdown. The survey also highlights disruptions to apprenticeship arrangements, work experience plans and other engagement with employers. Students in some instances have been effectively forced to stay on in education owing to reduced apprenticeship and employment opportunities for school-leavers. We find evidence of students adapting their aspirations and career goals to the new economic circumstances.  相似文献   
16.
The paper adds to the existing literature on the determinants of government spending in Research and Development (R&D) by considering the role of strategic interactions among countries as one of the possible competing explanations, within a spatial econometric framework. We account for several factors affecting national levels of public R&D spending, including (i) the international context – i.e. Lisbon strategy; (ii) country characteristics – level of private R&D, GDP, trade openness and the National System of Innovation; (iii) countries’ similarities in relation to (a) trade and economic size and (b) sectoral specialization. The analysis is carried out on 14 European countries. First, we find that factors traditionally affecting the level of public R&D expenditure, such as the scale of the national economy, trade openness, sectoral specialization and private R&D, significantly influence the level of public R&D in European countries between 1994 and 2006. Interestingly, the introduction of the Lisbon strategy does not seem to have affected changes in the levels of public R&D spending. Second, by using different weight matrices, we confirm the existence of strategic interactions in relation to R&D spending among European countries with similar economic, international trade and sectoral structure characteristics, though not geographically close.  相似文献   
17.
Peter Sharp, an Educational Psychologist, explains how Daniel Goleman's best selling book focused his interest on the idea of emotional literacy; how he found that interest was shared by Southampton's Education Services Chief Inspector and that, as a result of this, emotional literacy became one of the Authority's priorities. The wide range of initiatives currently taking place in Southampton are described as the broad way in which the concerns of emotional literacy are interpreted. The Southampton approach has already created interest among other LEAs and there are plans to produce supportive materials. The paper concludes by suggesting the way in which schools might start work in this area.  相似文献   
18.
Students’ writing problems are a global educational concern and is in need of particular attention. This study aims to examine the impact of providing extra writing opportunities (i.e., writing journals) on the quality of writing compositions. A longitudinal cluster-randomized controlled design using a multilevel modeling analysis with 182 fourth grade students was conducted. We examined whether students’ writing quality differed when writing journals on a weekly basis for 12 weeks, compared with a control group. Three covariates were analyzed, namely: (i) the students’ attitudes towards writing; (ii) their self-efficacy in writing; (iii) and their use of self-regulation (SRL) strategies while writing. Findings have shown that students who wrote week-journals significantly improved the writing quality of their compositions and reported a higher use of SRL strategies in writing. Nevertheless, self-efficacy and attitude towards writing were found to not be related to the quality of the compositions. Moreover, data indicated that the writing quality of compositions improved along with the writing quality of the week-journals. Findings suggest the use of week-journals in class to promote writing.  相似文献   
19.
The purpose of this study was to explore patterns of within-group variability in the emergent literacy skills of preschoolers who are at risk for academic difficulties. We used the person-centered approach of cluster analysis to identify profiles of emergent literacy skills, taking into account both oral language and code-related skills. Participants were 492 preschoolers (aged 42-60 months) enrolled in needs-based programs. In the fall of the academic year, children were administered eight measures of emergent literacy: four oral language measures (i.e., expressive and receptive grammar, expressive and receptive vocabulary) and four code-related measures (i.e., print concepts, alphabet knowledge, name writing, and rhyme). Controlling for age, hierarchical-agglomerative and K-means cluster analysis procedures were employed. Five psychometrically sound profiles emerged: highest emergent literacy (prevalence = 14%); three profiles with average oral language and differential code-related abilities (16%, 24%; 23%); and lowest oral language with broad code-related weaknesses (23%). Profiles were then compared on midyear teacher ratings of emergent literacy as well as end-of-kindergarten literacy performance; results provided convergent evidence of predictive validity. This study highlights the considerable heterogeneity of emergent literacy abilities within an “at-risk” group. The resulting profiles have theoretical and practical relevance when examining both concurrent relationships between oral language and code-related skills as well as longitudinal relationships between early patterns of performance and later reading achievement.  相似文献   
20.
Abstract

The purpose of the present study was to investigate the socio-demographic and lifestyle determinants of physical activity practice, as well as the motivations for being or not being physically active in Spanish university students. A representative sample of students from a Spanish university (n = 2,051; 42.1% males; mean age 21.9, s = 4.8 years) participated in the present cross-sectional study. A questionnaire including questions regarding lifestyle, dietary habits, parents' characteristics, and physical activity habits was administered to the students. The socio-demographic and lifestyle determinants of physical activity practice were assessed using multivariable logistic regression. 68.4% of men and 48.4% of women reported to practise physical activity in the present sample. Those who practised physical activity consumed more fruits and were less likely to be smokers compared to non-physically active students. Also, physically inactive men spent more time in front of the computer and physically inactive women spent more time in front of the TV and were more likely to be frequent alcohol consumers. Maternal educational level and maternal physical activity habits were also important determinants of physical activity practice among men and women respectively. In conclusion, physically active students tended to engage in other healthy habits in the present population, suggesting the clustering of healthy or unhealthy lifestyle factors among specific subgroups.  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