全文获取类型
收费全文 | 19295篇 |
免费 | 333篇 |
国内免费 | 14篇 |
专业分类
教育 | 13524篇 |
科学研究 | 1673篇 |
各国文化 | 548篇 |
体育 | 1600篇 |
综合类 | 8篇 |
文化理论 | 216篇 |
信息传播 | 2073篇 |
出版年
2022年 | 121篇 |
2021年 | 186篇 |
2020年 | 333篇 |
2019年 | 480篇 |
2018年 | 610篇 |
2017年 | 642篇 |
2016年 | 634篇 |
2015年 | 439篇 |
2014年 | 511篇 |
2013年 | 3812篇 |
2012年 | 473篇 |
2011年 | 475篇 |
2010年 | 419篇 |
2009年 | 405篇 |
2008年 | 543篇 |
2007年 | 458篇 |
2006年 | 422篇 |
2005年 | 373篇 |
2004年 | 351篇 |
2003年 | 333篇 |
2002年 | 292篇 |
2001年 | 310篇 |
2000年 | 313篇 |
1999年 | 282篇 |
1998年 | 208篇 |
1997年 | 203篇 |
1996年 | 201篇 |
1995年 | 200篇 |
1994年 | 196篇 |
1993年 | 186篇 |
1992年 | 263篇 |
1991年 | 271篇 |
1990年 | 258篇 |
1989年 | 253篇 |
1988年 | 218篇 |
1987年 | 192篇 |
1986年 | 189篇 |
1985年 | 233篇 |
1984年 | 190篇 |
1983年 | 194篇 |
1982年 | 173篇 |
1981年 | 165篇 |
1980年 | 176篇 |
1979年 | 223篇 |
1978年 | 154篇 |
1977年 | 140篇 |
1976年 | 131篇 |
1975年 | 120篇 |
1974年 | 132篇 |
1973年 | 107篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
161.
ABSTRACTDue to budget constraints, schools in the United States have increasingly turned to community arts organizations for support. School-community arts partnership stakeholders collaborate because of shared missions to provide students with valuable arts learning experiences. Investigations of these initiatives indicate that these partnerships improve arts learning opportunities and increase public support and resources for arts education. However, not much is known about the experiences and perspectives of the arts organizations that participate in these partnerships. Coordinating collective efforts with a multitude of institutions and interests poses challenges. In this study, we examine survey data collected from arts organization administrators who participated in a large-scale school-community arts partnership initiative. We find that these organizations are generally positive about their impacts on students’ educational outcomes, but there is substantial variation in these views. We also find that organizations differ in their levels of support for these collective efforts. Sources of this variation appear to be attributable to organizations’ preexisting resources and extent to which they are established. While this difference in levels of support is potentially inevitable, we find evidence that the operations handled by the “backbone” organization, i.e. the initiative’s facilitators and overseers, can significantly influence organizations’ levels of support for these efforts. Organizations are more likely to support these collaborative efforts when they believe the backbone organization ensures transparency with initiative operations, provides regular, effective communication, and effectively resolves competing priorities. 相似文献
162.
Quality of Life of Children with Learning Disabilities: A Comparison of Self‐Reports and Proxy Reports
下载免费PDF全文
![点击此处可从《Learning disabilities research & practice》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Halis Sakız Zeynep Hande Sart Bengü Börkan Barış Korkmaz Nalan Babür 《Learning disabilities research & practice》2015,30(3):114-126
This study aimed to explore how children with learning disabilities (LD) perceive their quality of life (QoL) and to compare self‐reports and proxy reports regarding their QoL. Children with LD, their typically developing peers, their parents and teachers responded to the child, parent, and teacher forms of KINDLR Questionnaire for Measuring Health‐Related Quality of Life (Ravens‐Sieberer & Bullinger, 1998). Findings showed that children with LD reported significantly lower QoL scores than those reported by typically developing peers. Intraclass correlation coefficients (ICCs) and t‐test results showed that agreement between child reports and parent‐proxy reports was either low or moderate on each QoL dimension. Findings of the study may be used to raise awareness regarding the social and educational needs of children with LD in Turkey. 相似文献
163.
Shoudong Wang Shulin Liu Jie Wang Kengo Yokosho Bin Zhou Ya-Chi Yu Zhi Liu Wolf B Frommer Jian Feng Ma Li-Qing Chen Yuefeng Guan Huixia Shou Zhixi Tian 《国家科学评论(英文版)》2020,7(11):1776
Soybean accounts for more than half of the global production of oilseed and more than a quarter of the protein used globally for human food and animal feed. Soybean domestication involved parallel increases in seed size and oil content, and a concomitant decrease in protein content. However, science has not yet discovered whether these effects were due to selective pressure on a single gene or multiple genes. Here, re-sequencing data from >800 genotypes revealed a strong selection during soybean domestication on GmSWEET10a. The selection of GmSWEET10a conferred simultaneous increases in soybean-seed size and oil content as well as a reduction in the protein content. The result was validated using both near-isogenic lines carrying substitution of haplotype chromosomal segments and transgenic soybeans. Moreover, GmSWEET10b was found to be functionally redundant with its homologue GmSWEET10a and to be undergoing selection in current breeding, leading the the elite allele GmSWEET10b, a potential target for present-day soybean breeding. Both GmSWEET10a and GmSWEET10b were shown to transport sucrose and hexose, contributing to sugar allocation from seed coat to embryo, which consequently determines oil and protein contents and seed size in soybean. We conclude that past selection of optimal GmSWEET10a alleles drove the initial domestication of multiple soybean-seed traits and that targeted selection of the elite allele GmSWEET10b may further improve the yield and seed quality of modern soybean cultivars. 相似文献
164.
Science & Education - 相似文献
165.
Jean B. Schumaker Joseph B. Fisher Lisa D. Walsh Paula E. Lancaster 《Learning disabilities research & practice》2020,35(4):180-200
In each of two studies, teachers were randomly assigned to either a Virtual Workshop (VW) group that used a computerized professional development program or an Actual Workshop (AW) group that participated in face-to-face professional development, including discussion, feedback, and collaboration. In both studies, teachers’ posttest scores related to their knowledge of the Question Exploration Routine and their plans for using it were significantly higher than their pretest scores. In Study 2, both groups’ posttest scores with regard to implementation and planning of the routine were significantly greater than their pretest scores. There were no significant differences between the groups at posttesting on any measure. The posttest knowledge scores of the whole groups of students and the subgroups of students with LD being taught by both groups of teachers were significantly higher than their pretest scores. All teachers indicated that they were satisfied with the training and the routine. VW teachers in both studies indicated that they were satisfied with the software program. 相似文献
166.
167.
168.
Danica G. Hays Rebecca E. Michel Hannah B. Bayne Anita A. Neuer Colburn Jayne Smith Myers 《Journal of College Counseling》2015,18(1):49-65
Relationship violence is a salient concern on college campuses today, and psychoeducational groups may be an appropriate prevention format. This article describes a study measuring the impact of college student participation in the HEART (Help End Abusive Relationships Today) program, a series of group sessions designed to increase knowledge and awareness of relationship violence. Findings indicated significant changes for group participants postintervention. Implications and recommendations for college counselors are discussed. 相似文献
169.
170.