全文获取类型
收费全文 | 10954篇 |
免费 | 159篇 |
国内免费 | 7篇 |
专业分类
教育 | 7675篇 |
科学研究 | 1120篇 |
各国文化 | 338篇 |
体育 | 753篇 |
综合类 | 4篇 |
文化理论 | 76篇 |
信息传播 | 1154篇 |
出版年
2021年 | 97篇 |
2020年 | 145篇 |
2019年 | 207篇 |
2018年 | 261篇 |
2017年 | 278篇 |
2016年 | 263篇 |
2015年 | 175篇 |
2014年 | 222篇 |
2013年 | 1970篇 |
2012年 | 250篇 |
2011年 | 248篇 |
2010年 | 220篇 |
2009年 | 221篇 |
2008年 | 275篇 |
2007年 | 259篇 |
2006年 | 233篇 |
2005年 | 210篇 |
2004年 | 216篇 |
2003年 | 156篇 |
2002年 | 155篇 |
2001年 | 180篇 |
2000年 | 217篇 |
1999年 | 187篇 |
1998年 | 110篇 |
1997年 | 106篇 |
1996年 | 99篇 |
1995年 | 95篇 |
1994年 | 89篇 |
1993年 | 100篇 |
1992年 | 159篇 |
1991年 | 166篇 |
1990年 | 172篇 |
1989年 | 178篇 |
1988年 | 136篇 |
1987年 | 135篇 |
1986年 | 135篇 |
1985年 | 176篇 |
1984年 | 146篇 |
1983年 | 135篇 |
1982年 | 120篇 |
1981年 | 103篇 |
1980年 | 105篇 |
1979年 | 155篇 |
1978年 | 99篇 |
1977年 | 106篇 |
1976年 | 88篇 |
1975年 | 85篇 |
1974年 | 105篇 |
1973年 | 88篇 |
1971年 | 79篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Quality of Life of Children with Learning Disabilities: A Comparison of Self‐Reports and Proxy Reports 下载免费PDF全文
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
72.
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
73.
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
74.
75.
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
76.
77.
Christina Hamme Peterson Sean B. Hall Juleen K. Buser 《Counselor Education & Supervision》2016,55(2):80-94
Counselors (N = 911) reported the research skills needed for practice and subsequent research training needs. Findings indicate that counselors have a high need for research skills at work, but training needs differ significantly by counselor type. Recommendations include increasing emphasis on single‐case design, survey design, and widely available data analysis tools. 相似文献
78.
79.
80.
Victoria B. Costa 《International Journal of Science Education》2013,35(9):1005-1023
This study focuses on the relationships between meanings of science constructed in classrooms and sociocultural precepts of the wider society. Research presented is part of a larger study of the negotiation of knowledge and roles in high school science classrooms. The data presented document that what goes on in classrooms reflects and recreates societal attitudes towards work, in general, and teachers’ work, in particular. The teacher in this study reduces his demands for academic work in return for students’ cooperation and as a means of coping with negative aspects of teaching. Students, in turn, are not concerned about the specific subject matter of chemistry. What matters to them are the academic credentials that lead to success in the college and employment arenas. As a result, teacher and students construct school chemistry to be what you‐get‐through‐as‐you‐get‐along. The interdependence of the roles and actions of teachers and students suggests changes in policy and practice. 相似文献