全文获取类型
收费全文 | 17605篇 |
免费 | 255篇 |
国内免费 | 26篇 |
专业分类
教育 | 12601篇 |
科学研究 | 1725篇 |
各国文化 | 209篇 |
体育 | 1456篇 |
综合类 | 7篇 |
文化理论 | 161篇 |
信息传播 | 1727篇 |
出版年
2021年 | 162篇 |
2020年 | 244篇 |
2019年 | 359篇 |
2018年 | 476篇 |
2017年 | 477篇 |
2016年 | 450篇 |
2015年 | 317篇 |
2014年 | 411篇 |
2013年 | 3380篇 |
2012年 | 362篇 |
2011年 | 408篇 |
2010年 | 347篇 |
2009年 | 312篇 |
2008年 | 367篇 |
2007年 | 334篇 |
2006年 | 326篇 |
2005年 | 293篇 |
2004年 | 305篇 |
2003年 | 297篇 |
2002年 | 251篇 |
2001年 | 510篇 |
2000年 | 361篇 |
1999年 | 317篇 |
1998年 | 172篇 |
1997年 | 214篇 |
1996年 | 193篇 |
1995年 | 182篇 |
1994年 | 193篇 |
1993年 | 164篇 |
1992年 | 228篇 |
1991年 | 250篇 |
1990年 | 241篇 |
1989年 | 255篇 |
1988年 | 207篇 |
1987年 | 198篇 |
1986年 | 213篇 |
1985年 | 261篇 |
1984年 | 187篇 |
1983年 | 189篇 |
1982年 | 168篇 |
1981年 | 161篇 |
1980年 | 145篇 |
1979年 | 224篇 |
1978年 | 160篇 |
1977年 | 162篇 |
1976年 | 122篇 |
1975年 | 141篇 |
1974年 | 135篇 |
1973年 | 131篇 |
1971年 | 114篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
Perceptions of secondary LD program supervisors were identified and compared with views of secondary LD teachers regarding the presence of specific program features, field-related issues, and suggestions for program improvement. Responses indicated that the supervisors were more positive and, in many cases, held significantly different views than LD teachers. 相似文献
995.
Richard Tinning 《Sport, Education and Society》2015,20(5):676-690
In this commentary, I consider each of the papers in this special issue in regard to their contribution to a debate on the nature of learning in physical education (PE). I also discuss how we might take this aspiration further by moving beyond a ‘mere’ debate over learning theories to a knowledge building process in which knowledge claims are ‘tested’ against their compatibility (or non-compatibility) with other ‘knowings’. In this regard, I introduce the idea of vertical integration or compatibility as a consideration for building a more mature field of study of learning in PE. 相似文献
996.
C. G. Olesen B. H. Larsen E. L. Andresen M. de Zee 《European Journal of Sport Science》2015,15(3):242-247
AbstractThe aim of this study was to develop a performance test set-up for America's Cup grinders. The test set-up had to mimic the on-boat grinding activity and be capable of collecting data for analysis and evaluation of grinding performance. This study included a literature-based analysis of grinding demands and a test protocol developed to accommodate the necessary physiological loads. This study resulted in a test protocol consisting of 10 intervals of 20 revolutions each interspersed with active resting periods of 50 s. The 20 revolutions are a combination of both forward and backward grinding and an exponentially rising resistance. A custom-made grinding ergometer was developed with computer-controlled resistance and capable of collecting data during the test. The data collected can be used to find measures of grinding performance such as peak power, time to complete and the decline in repeated grinding performance. 相似文献
997.
Knowledge management systems (KMSs) support high-quality services while shaping and improving positioning of services. Given such strategic importance of KMS, this study explores the effects of different types of KMS, which respond to the attributes (i.e., diversity and tacitness) of collective knowledge, on service (re-)positioning. Through a case study of a financial consulting company at the core of KMSs, combinations of the two knowledge attributes are used to determine which type of KMS (i.e., information library, deepened stock, thought islands, and shared brain) offers the greatest efficiency and effectiveness in service (re-)positioning. The joint concerns of service innovation scope and specificity are also considered. Finally, the study discusses the theoretical and practical implications on KMS design and functionality in the new business age of service innovation. 相似文献
998.
Veronica M. Richard Maria K.E. Lahman 《International Journal of Research & Method in Education》2015,38(1):3-22
In this methodological discussion, the authors detail and reflect on the processes of using photo-elicitation interviewing as a way to align with positive qualitative methodologies, to gain access to participant beliefs and values, and to highlight participant voices through their choices of words and visuals. A review of the literature and an overview of the educational research experiences leading to the discussion are included. Next, the discoveries regarding what is methodologically new and/or valuable concerning this visual method is presented. In the final section, the authors reflexively contemplate aspects of visual methodological processes in an effort to address methodological crossroads of potential and tension including: (1) the potential of decontextualized photos, (2) photos as metaphors of meaning, (3) photos as representations of inherent meaning, (4) participant empowerment, and (5) graphic representation or graphic portraits. 相似文献
999.
N. Unni C. Sumithra R. Lakshman Lakshmi N. Leela Menon K. N. Subhakumari V. S. Sheejamol 《Indian journal of clinical biochemistry : IJCB》2015,30(2):161-166
PCOS is a heterogeneous endocrine disorder with diverse clinical presentation. Oxidative stress plays a key role in the pathophysiology of this disease. Serumhigh sensitive C-reactive protein (hsCRP), a marker of chronic low grade inflammation, is indicative of future development of cardiovascular disease. Our aim is to evaluate the oxidant status and hsCRP levels in PCOS. The study involved 61 cases and 61 controls in the age group of 18–40 years diagnosed with PCOS. Erythrocyte malondialdehyde (MDA), superoxide dismutase (SOD), serum hsCRP, gonadotrophins, thyroid stimulating hormone, prolactin, glycemic status and lipid profile were estimated. Erythrocyte MDA (p < 0.001), SOD (p = 0.007) and serum hsCRP (p < 0.001) were significantly elevated in PCOS patients than controls. Oxidative stress is present in women with PCOS along with elevated hsCRP. 相似文献
1000.
Michael C. Motal Daniel A. Klaus Diana Lebherz-Eichinger Bianca Tudor Thomas Hamp Marion Wiegele Rudolf Seemann Claus G. Krenn Georg A. Roth 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(1):90-96