全文获取类型
收费全文 | 28555篇 |
免费 | 325篇 |
国内免费 | 19篇 |
专业分类
教育 | 20451篇 |
科学研究 | 2232篇 |
各国文化 | 358篇 |
体育 | 2572篇 |
综合类 | 10篇 |
文化理论 | 267篇 |
信息传播 | 3009篇 |
出版年
2021年 | 269篇 |
2020年 | 404篇 |
2019年 | 619篇 |
2018年 | 810篇 |
2017年 | 809篇 |
2016年 | 783篇 |
2015年 | 488篇 |
2014年 | 623篇 |
2013年 | 5500篇 |
2012年 | 588篇 |
2011年 | 624篇 |
2010年 | 482篇 |
2009年 | 538篇 |
2008年 | 588篇 |
2007年 | 553篇 |
2006年 | 515篇 |
2005年 | 459篇 |
2004年 | 484篇 |
2003年 | 398篇 |
2002年 | 406篇 |
2001年 | 516篇 |
2000年 | 575篇 |
1999年 | 485篇 |
1998年 | 314篇 |
1997年 | 305篇 |
1996年 | 363篇 |
1995年 | 299篇 |
1994年 | 320篇 |
1993年 | 276篇 |
1992年 | 407篇 |
1991年 | 436篇 |
1990年 | 405篇 |
1989年 | 434篇 |
1988年 | 391篇 |
1987年 | 377篇 |
1986年 | 388篇 |
1985年 | 421篇 |
1984年 | 345篇 |
1983年 | 376篇 |
1982年 | 292篇 |
1981年 | 299篇 |
1980年 | 312篇 |
1979年 | 398篇 |
1978年 | 329篇 |
1977年 | 291篇 |
1976年 | 247篇 |
1975年 | 223篇 |
1974年 | 208篇 |
1973年 | 216篇 |
1971年 | 203篇 |
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
1.
Jonathan J. Mallett 《Learned Publishing》2021,34(1):49-56
- Scientific publication has been a key part of the scientific method since the inception of Philosophical Transactions in 1665.
- The scientific publications industry has grown exponentially along with science, incorporating technological innovations along the way, and adapting journal processes and practices to changing needs of science as it matured.
- Of all the technological innovations over more than 300 years, the move to online journals may be the most significant, making open access to content practical for the first time.
- The open‐access movement is disrupting the economics of journal publishing, which is hoped will make the industry more competitive: the ability of the publications industry to adapt to open access will be a measure of its resilience.
- The demand for articles published in reputable journals continues to grow as readers trust the credibility of peer reviewed journal articles, and good authors value the prestige of publishing in the best journals.
- It is difficult to predict what new functionalities may be included in articles of the future or what additional services publishers and editors will provide, but there is every reason to believe that scientific journal articles are here to stay.
2.
Megan K. Schraedley Hamilton Bean Sarah E. Dempsey Mohan J. Dutta Kathleen P. Hunt Sonia R. Ivancic 《Journal of Applied Communication Research》2020,48(2):166-185
ABSTRACTThis forum brings together food, (in)security, and communication. The authors participating in this forum center communication as both process and tool for understanding, mitigating, and making meaning of food (in)security. The nine authors together discuss the role of communication in food (in)security, the central challenges for scholars and practitioners working on food (in)security, and the creative possibilities and impacts influencing the future of food (in)security. The forum produces a call for applied scholars to re-imagine communication frameworks in order to make meaningful differences in their communities. 相似文献
3.
J. Ron Nelson Gregory J. Benner Jorge Gonzalez 《Learning disabilities research & practice》2003,18(4):255-267
The purpose of this article was to systematically review the available research on learner characteristics that influence the treatment effectiveness of early literacy interventions. Meta‐analytic procedures were applied to a total of 30 studies that met the inclusionary and exclusionary criteria. Mean average effect sizes were computed for seven primary learner characteristic categories: (1) rapid naming, (2) alphabetic principle, (3) phonological awareness, (4) problem behavior, (5) memory, (6) IQ, and (7) demographic. The primary learner characteristics that influenced the treatment responsiveness of early literacy interventions were, in order of magnitude, rapid naming, problem behavior, phonological awareness, alphabetic principle, memory, IQ, and demographics. With the exception of the demographic category, the obtained effect sizes for the primary learner characteristics were moderately large. The demographic primary learner characteristic (i.e., disability, ethnicity, grade‐level status) of children was not statistically (p < 0.05) distinct from zero. The findings, limitations, and future research needs are discussed. 相似文献
4.
5.
What are typical requirements in graduate measurement programs? How d o programs in measurement and research methods differ? 相似文献
6.
7.
8.
9.
Irvin J. Lehmann 《Educational Measurement》1990,9(1):3-10
What are the roots of NCME? What were our initial goals and how well have we attained them? Are we drifting away from our practitioner orientation? What should be our policy on important matters in educational practice and our role in sociopolitical issues in educational measurement? 相似文献
10.
V. J. Hinton D. C. De Vivo R. Fee E. Goldstein Y. Stern 《Learning disabilities research & practice》2004,19(3):146-154
Duchenne Muscular Dystrophy (DMD) is a neurogenetic developmental disorder that presents with progressive muscular weakness. It is caused by a mutation in a gene that results in the absence of specific products that normally localize to muscle cells and the central nervous system (CNS). The majority of affected individuals have IQs within the normal range, generally with lower verbal than performance IQ scores. Prior work has demonstrated selective deficits on tests of verbal span and immediate memory. For the current study, 26 boys with DMD (and normal intellectual function) and their unaffected siblings were evaluated. Paired comparisons demonstrated that the children with DMD had significantly poorer academic achievement scores than their siblings, even though their vocabulary levels and home and educational environments were comparable. Children with DMD also had more behavioral concerns, physical disabilities, and poorer verbal memory spans. Linear regression indicated that behavioral concerns, executive function, and physical disability did not contribute substantially to academic performance, whereas performance on verbal span did. DMD presents with a selective developmental aberration in verbal span that has wide‐ranging consequences on learning skills. 相似文献