全文获取类型
收费全文 | 4635篇 |
免费 | 46篇 |
专业分类
教育 | 3352篇 |
科学研究 | 612篇 |
各国文化 | 24篇 |
体育 | 191篇 |
综合类 | 7篇 |
文化理论 | 87篇 |
信息传播 | 408篇 |
出版年
2023年 | 21篇 |
2022年 | 36篇 |
2021年 | 46篇 |
2020年 | 63篇 |
2019年 | 108篇 |
2018年 | 185篇 |
2017年 | 212篇 |
2016年 | 265篇 |
2015年 | 189篇 |
2014年 | 149篇 |
2013年 | 387篇 |
2012年 | 231篇 |
2011年 | 224篇 |
2010年 | 159篇 |
2009年 | 67篇 |
2008年 | 122篇 |
2007年 | 104篇 |
2006年 | 69篇 |
2005年 | 708篇 |
2004年 | 504篇 |
2003年 | 323篇 |
2002年 | 166篇 |
2001年 | 78篇 |
2000年 | 55篇 |
1999年 | 38篇 |
1998年 | 20篇 |
1997年 | 12篇 |
1996年 | 19篇 |
1995年 | 10篇 |
1994年 | 11篇 |
1993年 | 10篇 |
1992年 | 8篇 |
1991年 | 13篇 |
1990年 | 11篇 |
1989年 | 10篇 |
1988年 | 10篇 |
1987年 | 7篇 |
1986年 | 6篇 |
1985年 | 2篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1980年 | 5篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1976年 | 4篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 2篇 |
1972年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有4681条查询结果,搜索用时 0 毫秒
121.
122.
Inger Andersen Naoko Ishii Thomas Brooks Cynthia Cummis Gustavo Fonseca Astrid Hillers Nicholas Macfarlane Nebojsa Nakicenovic Kevin Moss Johan Rockstr?m Andrew Steer Dominic Waughray Caroline Zimm 《国家科学评论(英文版)》2021,(7):12-15
The 2015 Paris Agreement to keep global warming well below 2℃above pre-industrial levels and aim towards limiting warming to 1.5℃marked a wa-tershed in planetar... 相似文献
123.
The extraordinary romance and thrilling adventure associated with the tale of wootz steel shows how Indian metallurgists were
the world leaders in antiquity in the manufacture of this legendary high-grade steel. In many ways this material was brought
to global attention by the writings of Cyril Stanley Smith. Modern metallurgy and materials science rest on the foundation
built by the study of this steel during the past three centuries. 相似文献
124.
Patterns of Early‐Life Social and Environmental Exposures and Child Cognitive Development,Rhea Birth Cohort,Crete, Greece 下载免费PDF全文
Mariza Kampouri Andriani Kyriklaki Theano Roumeliotaki Katerina Koutra Despoina Anousaki Katerina Sarri Maria Vassilaki Manolis Kogevinas Leda Chatzi 《Child development》2018,89(4):1063-1073
Early‐life exposures are critical for later child cognitive development. McCarthy Scales of Children's Abilities (MSCA) were used to assess cognitive development of 700 preschoolers (Mage = 4.2 years), derived from the “Rhea” birth cohort, in Greece. Principal component analysis (PCA) was applied on prospectively collected exposure data. Six components were extracted; five of them were associated with child cognition. Higher parental social status, preschool attendance and less TV watching, nonsmoking during pregnancy and breastfeeding, and parental involvement in child life were protective factors of child cognition at 4 years. Increased child birth order was negatively associated with child cognition. Offspring's size at birth was not associated with any cognitive outcome. These findings reveal the importance of early‐life exposures to child cognitive development. 相似文献
125.
126.
This essay highlights and explores a point of tension between theoretical writings on style and moral frames. Past political communication scholarship points to the importance of the feminine style in today's televisual era of politics. In this same political era, the conservative strict parent moral frame has dominated most policy debates. Surprisingly, this highly successful moral frame appears squarely at odds with the feminine style so closely connected with political success. This essay attempts to unravel this tension between styles and frames by examining discourse drawn from the 2007 debate over comprehensive immigration reform. To account for the success of conservative messages within this debate, this essay both (a) calls into question the nature of the relationship between the television medium and the feminine style and (b) expands our understanding of the discursive operation of deep moral frames by drawing a distinction between intra-familial and extra-familial policy discourse. 相似文献
127.
Dr Hilary McQueen Susan Hallam Andrea Creech Maria Varvarigou 《International Journal of Lifelong Education》2013,32(3):353-377
The basis of this article is findings from the Music for Life Project which investigated the benefits and challenges of music activity participation for the over 50s in three case study sites in the United Kingdom. The paper uses a philosophical lens to explore the leaders’ and participants’ views on the purpose of the activities, how learners are characterised, the role of the activity leader, and the use of assessment. Data from 147 participant and 13 activity leader questionnaires, from 28 participant and 13 activity leader individual interviews, and from 15 participant focus groups were analysed within a philosophical framework that refers to six approaches: liberal, progressive, behaviourist, humanistic, radical and analytic. NVivo and SPSS assisted with the quantitative and qualitative analyses. The analyses indicated that humanism was prevalent although other approaches, particularly behaviourist and progressive, were evident. Activity leaders’ emphasis on humanism might lead to more concern with the comfort side of participation than with musical progression. There was very little use of formal assessment or feedback to support progression. There was some discrepancy between purposes for participation between leaders and participants. There might be a need to clarify purpose, particularly if activities are part of adult education rather than adult social groups. 相似文献
128.
129.
Janice T. Gibson Marvin J. Westwood F. Ishu Ishiyama William A. Borgen Susan M. Showalter Qasem Al-Sarraf Semiha A. Atakan Isaura R. F. Guimares A. Lina Guisti-Ortiz Margaret Robertson Benjamin Shafrir Peter De Weerdt Gundelina A. Velazco Carol E. Baker Maria Dikaiou Tatiana Gabay Lina Kashyup Ilona Lee Maria E. Felce Di Paula Hillman Ngunangwa Nina F. Talyzina 《International journal for the advancement of counseling》1991,14(3):203-216
130.
Maria Menon 《Compare》1998,28(3):293-304
The present paper attempts to assess the link between economic factors and the private demand for higher education through an investigation of the findings of relevant studies. After an examination of the various methodologies adopted by different authors in the estimation of the perceived rate of return to higher education, the main findings of available studies conducted in several countries (UK, the Philippines, Egypt, Hong Kong, and Cyprus) are discussed and compared. The main conclusions drawn from this comparison are the following: First, the perceived rates of return to higher education are, for the most part, very realistic, indicating an accurate perception of the economic benefits of higher education on the part of students. Second, non‐economic factors, such as gender, ability and socio‐economic background, appear to constitute strong influences on the private demand for higher education, which educational policy makers should take into account, along with the economic variables. Finally, it is suggested that the methodology discussed in the present paper can be used in the future to estimate the perceived profitability of higher studies at different institutions and countries offering higher education. 相似文献