全文获取类型
收费全文 | 12257篇 |
免费 | 8篇 |
国内免费 | 2篇 |
专业分类
教育 | 9376篇 |
科学研究 | 1300篇 |
各国文化 | 4篇 |
体育 | 425篇 |
文化理论 | 408篇 |
信息传播 | 754篇 |
出版年
2022年 | 6篇 |
2021年 | 7篇 |
2020年 | 10篇 |
2019年 | 21篇 |
2018年 | 2196篇 |
2017年 | 2086篇 |
2016年 | 1582篇 |
2015年 | 112篇 |
2014年 | 123篇 |
2013年 | 310篇 |
2012年 | 233篇 |
2011年 | 703篇 |
2010年 | 846篇 |
2009年 | 448篇 |
2008年 | 649篇 |
2007年 | 1158篇 |
2006年 | 69篇 |
2005年 | 401篇 |
2004年 | 447篇 |
2003年 | 366篇 |
2002年 | 134篇 |
2001年 | 16篇 |
2000年 | 29篇 |
1999年 | 11篇 |
1998年 | 11篇 |
1997年 | 25篇 |
1996年 | 7篇 |
1995年 | 6篇 |
1994年 | 6篇 |
1993年 | 6篇 |
1992年 | 9篇 |
1991年 | 11篇 |
1990年 | 7篇 |
1988年 | 11篇 |
1987年 | 13篇 |
1986年 | 14篇 |
1985年 | 9篇 |
1984年 | 6篇 |
1983年 | 10篇 |
1982年 | 11篇 |
1980年 | 7篇 |
1979年 | 5篇 |
1977年 | 5篇 |
1975年 | 9篇 |
1974年 | 6篇 |
1973年 | 7篇 |
1970年 | 6篇 |
1969年 | 7篇 |
1925年 | 5篇 |
1924年 | 5篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
91.
Peter Wood 《Academic Questions》2017,30(2):245-252
92.
93.
94.
95.
96.
Paulo Ricardo Pereira Dos Santos Bruno Remígio Cavalcante Andreya Karolyne Dos Santos Vieira Marcos Duarte Guimarães Antônio Marconi Leandro Da Silva Anderson Da Costa Armstrong 《Journal of sports sciences》2020,38(17):1936-1942
ABSTRACT We performed a randomized, controlled trial to analyse the effects of resistance training (RT) on cognitive and physical function among older adults. Fifty participants (mean age 67 years, ~60% woman) were randomly assigned to an RT program or a control group. Participants allocated to RT performed three sets of 10-15RM in nine exercises, three times per week, for 12-weeks. Control group did not perform any exercise. Variables included cognitive (global and executive function) and physical function (gait, mobility and strength) outcomes. At completion of the intervention, RT was shown to have significantly mitigated the drop in selective attention and conflict resolution performance (Stroop test: -494.6; 95%CI: -883.1; ?106.1) and promoted a significant improvement in working memory (digit span forward: -0.6; 95%CI: ?1.0; ?0.1 and forward minus backward: -0.9; 95% CI: ?1.6; ?0.2) and verbal fluency (animal naming: +1.4, 95%CI 0.3, 2.5). No significant between-group differences were observed for other cognitive outcomes. Regarding physical function, at completion of the intervention, the RT group demonstrated improved fast-pace gait performance (?0.3; 95% CI: ?0.6; ?0.0) and 1-RM (+21.4 kg; 95%CI: 16.6; 26.2). No significant between-group differences were observed for other mobility-related outcomes. In conclusion, RT improves cognitive and physical function of older adults. 相似文献
97.
98.
Marc Torka 《Minerva》2018,56(1):59-83
Funding is an important mechanism for exercising influence over ever more parts of academic systems. In order to do so, funding agencies attempt to export their functional and normative prerequisites for financing to new fields. One essential requirement for fundees is then to construct research processes in the form of a project beforehand, one that is limited in time, scope and content. This article demonstrates how the public funding of doctoral programs expands this model of project research from experienced academics to the socialization process for the new academic generation. This process of “projectification” underlies funding-driven institutional changes in doctoral training. A multi-level comparative study of German policies, funding mechanisms and organizational frameworks for doctoral training demonstrates the emergence of a specific model of predefined PhD projects. The investigation of doctoral training practices reveals that socio-epistemic preconditions regulate whether research fields adopted or rejected this demanding model. This result contradicts widespread claims about a radical change in doctoral training and suggests focusing on the actual practices of field-specific doctoral research. 相似文献
99.
The literature on Cultural Economics provides us with some examples for the measurement of technical efficiency. However, there are few case studies dedicated to the analysis of allocative efficiency. The aim of this paper is to fill this gap by incorporating a methodology that analyses both technical and allocative efficiency. We use the Shephard’s distance function, particularly suitable when affronted with non-profit-making firms or institutions that are not interested in cost minimization. As an empirical application, we analyse the efficiency of Fundación Princesa de Asturias (PAF), a Spanish non-governmental organization devoted to promoting the cultural, scientific and humanistic values of universal heritage, the period of study being 1988–2012. Our findings suggest that PAF could have used 7% less inputs to achieve the same level of output. On the other hand, we have found allocative inefficiency. Concretely, the input for other expenditures appears to have been over-utilized in relation to both the inputs for labour and current assets, with labour in turn being over-utilized in relation to current assets. Moreover, our results indicate that both technical and allocative efficiency have clearly improved during the period analysed. In summary, our empirical application shows how distance function methodology can be successfully implemented to measure allocative efficiency in cultural firms and institutions. 相似文献
100.
Jin Woo Lee Anastasia Ostrowski Aileen Huang-Saad Colleen M. Seifert 《European Journal of Engineering Education》2019,44(3):360-378
ABSTRACTWith increasing demand for improved medical equipment and healthcare, next-generation biomedical engineers need strong design skills. Equipping biomedical engineering students with tools for idea generation and development can increase student design success. Design Heuristics are an ideation tool developed through empirical studies of product designs. While identified in the mechanical engineering space, Design Heuristics may be applicable in biomedical engineering design. In our study, we implemented a Design Heuristics session during upper-level undergraduate and first-year graduate biomedical engineering design courses. We examined the applicability of Design Heuristics within individual and team concept generation contexts. The findings demonstrated that biomedical engineering students were able to use Design Heuristics to generate multiple concepts, and that initial concepts produced using Design Heuristics were carried over into final team design. The results support the applicability of Design Heuristics to student idea generation in biomedical engineering design. 相似文献