全文获取类型
收费全文 | 9276篇 |
免费 | 107篇 |
国内免费 | 18篇 |
专业分类
教育 | 6272篇 |
科学研究 | 1040篇 |
各国文化 | 90篇 |
体育 | 992篇 |
综合类 | 6篇 |
文化理论 | 96篇 |
信息传播 | 905篇 |
出版年
2021年 | 69篇 |
2020年 | 122篇 |
2019年 | 175篇 |
2018年 | 237篇 |
2017年 | 252篇 |
2016年 | 218篇 |
2015年 | 153篇 |
2014年 | 216篇 |
2013年 | 1689篇 |
2012年 | 199篇 |
2011年 | 196篇 |
2010年 | 169篇 |
2009年 | 152篇 |
2008年 | 169篇 |
2007年 | 193篇 |
2006年 | 161篇 |
2005年 | 150篇 |
2004年 | 141篇 |
2003年 | 168篇 |
2002年 | 138篇 |
2001年 | 157篇 |
2000年 | 157篇 |
1999年 | 155篇 |
1998年 | 72篇 |
1997年 | 74篇 |
1996年 | 109篇 |
1995年 | 77篇 |
1994年 | 95篇 |
1993年 | 87篇 |
1992年 | 153篇 |
1991年 | 146篇 |
1990年 | 137篇 |
1989年 | 136篇 |
1988年 | 114篇 |
1987年 | 116篇 |
1986年 | 138篇 |
1985年 | 134篇 |
1984年 | 107篇 |
1983年 | 129篇 |
1982年 | 110篇 |
1981年 | 104篇 |
1980年 | 93篇 |
1979年 | 165篇 |
1978年 | 110篇 |
1977年 | 108篇 |
1976年 | 104篇 |
1975年 | 79篇 |
1974年 | 89篇 |
1972年 | 70篇 |
1971年 | 70篇 |
排序方式: 共有9401条查询结果,搜索用时 15 毫秒
181.
182.
183.
184.
Forming, Losing, Renewing, and Replacing Friendships: Applying Temporal Parameters to the Assessment of Children's Friendship Experiences 总被引:2,自引:0,他引:2
Friendship formation and dissolution were tracked over time in a summer camp to examine whether such events are valid indicators of individual differences in children's friendship adjustment. Subjects were 216 children ages 8–15 years. Sociometric nominations were used to determine the identities of reciprocal friends. Loneliness at camp was also tracked over time. In addition, data on group acceptance, behavioral reputations, social competence, and behavioral problems were gathered from peers and counselors. Analyses suggested that friendship formation and duration were coherent, independent dimensions of individual differences and distinct from the overall extensivity of involvement in friendships. Regression analyses indicated that the temporal parameters of participation in friendship enhanced the prediction of changes in loneliness at camp. Age and sex differences in temporal parameters were explored, and 4 discrete trajectories for friendship involvement were identified. Children with different trajectories differed in their behavioral profiles from one another and from children who were chronically friendless. 相似文献
185.
This article describes an example of an overseas counsellor education program. The problems, issues, and educational implications of the program are detailed. 相似文献
186.
R. G. Cochrane J. Elkins Dawn M. Richmond 《International Journal of Disability, Development & Education》1969,16(3):131-142
Three hundred and ninety‐nine Grade 4 Brisbane children were given a battery o1 general ability and achievement tests. Means and standard deviations allowed construction of 15‐point scales for a Queensland Grade 4. A correlation matrix included indices concerning sub‐tests of general ability and achievement tests. Comparisons with original A.C.E.R. co‐efficients were made. The matrix was factor sub‐tests of general ability and achievement tests. Comparisons with analysed and rotated, three factors emerging ‐‐ verbal, performance and computational. A canonical correlation was performed and three significant elements emerged ‐‐ a verbal, a computational (or integrative or automatic sequential) and a problem‐solving element. 相似文献
187.
188.
Leon IG 《Child development》2002,73(2):652-663
The American definition of kinship based on biological ties, the practice of closed adoption, and stigmas associated with adoption may decisively influence adoption-related losses. Cross-cultural and historical accounts of adoption that do not apply to these contemporary American constructs of parenthood and practices of adoption suggest outcomes that are not as integrally based on loss. Adoption in infancy is defined as parenting a child with one set of (adoptive) parents and two (adoptive and birth) families. Implications for adoption research, policy, and practice are discussed. 相似文献
189.
Mark G. Storz 《The Urban Review》2008,40(3):247-267
In interviews with over 250 urban young adolescents, many students make it clear that they are acutely aware of the educational
inequities that exist in their schools and that these inequities are having a negative impact on their education. Student
voice is used to highlight urban middle school students’ perspectives on the quality of their education particularly in terms
of curricular issues, teacher quality, and lack of resources.
相似文献
Mark G. StorzEmail: |
190.
G. V. Prosser 《Instructional Science》1978,7(4):359-383
Both active questions i.e. questions asked by subjects, and provided (or passive) questions i.e. offered to subjects as problems for solution, had been found to facilitate learning and retention of prose material when subjects were faced with a task of sufficient difficulty to challenge their competence. With difficult prose, boys and low ability subjects had gained most from active questions. These effects were more pronounced in the long term. In this study, the effects of relevant active questions i.e. questions which subjects can put alongside answers, are investigated and compared with those of active and provided questions, over a series of six presentations for both the short and the long term (i.e. after ten months). In the short term, although active questions give greater help than provided questions on the first presentation, and relevant active questions give the greatest improvement between the first and second presentations, provided questions are the most helpful overall. In the long term, however, both the active questions treatments prove to be as effective as provided questions. For low ability boys, the difference between treatments is negligble even in the short term; under the relevant active questions treatment the number of questions asked is greater; and the decline in inspection time over presentations is negligible.This study formed part of a Schools' Council Research project (Director: Dr. W. P. Robinson) in the Department of Psychology, University of Southampton. 相似文献