全文获取类型
收费全文 | 1217篇 |
免费 | 19篇 |
专业分类
教育 | 858篇 |
科学研究 | 153篇 |
各国文化 | 20篇 |
体育 | 75篇 |
文化理论 | 23篇 |
信息传播 | 107篇 |
出版年
2021年 | 12篇 |
2020年 | 23篇 |
2019年 | 22篇 |
2018年 | 34篇 |
2017年 | 47篇 |
2016年 | 28篇 |
2015年 | 27篇 |
2014年 | 23篇 |
2013年 | 263篇 |
2012年 | 29篇 |
2011年 | 17篇 |
2010年 | 19篇 |
2009年 | 27篇 |
2008年 | 28篇 |
2007年 | 23篇 |
2006年 | 24篇 |
2005年 | 28篇 |
2004年 | 16篇 |
2003年 | 14篇 |
2002年 | 22篇 |
2001年 | 12篇 |
2000年 | 24篇 |
1999年 | 12篇 |
1998年 | 9篇 |
1997年 | 15篇 |
1996年 | 17篇 |
1995年 | 14篇 |
1994年 | 14篇 |
1993年 | 13篇 |
1992年 | 16篇 |
1991年 | 18篇 |
1990年 | 24篇 |
1989年 | 11篇 |
1987年 | 11篇 |
1986年 | 8篇 |
1985年 | 26篇 |
1984年 | 10篇 |
1982年 | 11篇 |
1981年 | 10篇 |
1980年 | 14篇 |
1979年 | 11篇 |
1978年 | 13篇 |
1977年 | 11篇 |
1976年 | 13篇 |
1974年 | 8篇 |
1971年 | 9篇 |
1934年 | 11篇 |
1933年 | 8篇 |
1928年 | 9篇 |
1926年 | 9篇 |
排序方式: 共有1236条查询结果,搜索用时 15 毫秒
121.
122.
Bonnie Klimes-Dougan Jose A. Lopez Perry Nelson Howard S. Adelman 《The Urban Review》1992,24(3):185-202
An interview and an intervention study are reported. Interview findings extend research on the positive relationship of parent involvement to school success. That is, although most of the low income families reported low-moderate participation, a postive relationship was found between parent involvement and school adjustment as early as kindergarten. With respect to negative valuing and barrier interpretations of low participation, the data support the latter; all but a few parents reported positive attitudes toward school involvement, while the majority indicated significant barriers. In comparing Latino and non-Latino groups, the former reported more barriers. Within the Latino group, parents whose children had made a good school adjustment indicated the most participation. Non-English proficient parents reported more barriers than those proficient in English but comparable degrees of involvement. In the intervention study, a simple strategy resulted in more treatment than control parents attending a school event. Differences in attendance were related to ethnicity and language.This work was carried out in conjunction with a dropout prevention demonstration project conducted as a collaborative effort of the School Mental Health unit (Janelle Munn, Director) and Dropout Prevention unit (Pete Martinez, Director) of the Los Angeles Unified School District and the School Mental Health Project at UCLA (Howard Adelman and Linda Taylor, Co-directors). Partial support for the project came from the U.S. Department of Education. The authors, of course, assume full responsibility for the contents, but we want to take this opportunity to acknowledge the contributions of participating schools and project staff (especially Mary Beth DiCecco and Alison McAlpine). And although she declined author credit, this work could not have been accomplished with the many contributions of Linda Taylor, the project director. We would also like to thank Regina DeWitter, Teresa Gonzales, Kathy Eides and the many other UCLA students who assisted in various phases of the research. 相似文献
123.
Gaming, in its many forms, is becoming a more active force in classrooms. To prepare preservice candidates for this trend, one teacher education program asked candidates (n = 60) to develop games in varied curricular fields tied to curriculum standards. This article describes the development of a model game, assignment requirements, provides a content review of eight games (geography and novels), their features, and highlights benefits and lessons learned from this experience. 相似文献
124.
Prior research suggests that group rearing may attenuate a young bird’s tendency to approach and follow an imprinting stimulus. The present work examined the effect of group rearing on a different measure of attachment, suppression by the imprinting stimulus of distress calling induced by abrupt reductions in group size. In Experiment 1, ducklings were reared in groups of 12 or 3 over Days 1–6 posthatch, and each group received a total of 3.5 h of exposure to an imprinting stimulus. Subsequent tests revealed that, when the groups of ducklings were separated into smaller subgroups: (1) the fewer the ducklings in a subgroup, the more distress calls emitted; (2) a given number of birds separated from a larger group emitted more distress calls than an equal number from a smaller group; and (3) regardless of the subgroup size, fewer distress calls occurred when the imprinting stimulus was present than when it was absent. A second experiment revealed that when a group of 12 birds was first confronted with an imprinting stimulus on Day 6 posthatch, they reacted with an increase in distress calling and corner huddling (an aversive reaction). After several hours of exposure to the stimulus, however, its presence exerted a powerful suppressive effect on distress calling. It is concluded that the social bonds between the members of a brood do not preclude the formation of a social attachment to an imprinting stimulus subsequently encountered. 相似文献
125.
Black Grandmothers in Multigenerational Households: Diversity in Family Structure and Parenting Involvement in the Woodlawn Community 总被引:2,自引:0,他引:2
Jane L. Pearson rea G. Hunter Margaret E. Ensminger Sheppard G. Kellam 《Child development》1990,61(2):434-442
We report here the frequency of black grandmothers' coresidence in households with first-grade children, their patterns of involvement in parenting, and the degree to which family structure and employment affected the grandmothers' parenting involvement in a 1966/1967 community-defined population. Coresidence between grandmothers and their target first-grade grandchildren was found in 10% of the households. The 130 grandmothers' parenting involvement was substantial, second only to mother involvement, and was characterized by 2 parenting activity patterns: control and punishment, and support and punishment. The degree of grandmothers' parenting involvement differed by family structure, with grandmothers in mother-absent homes most likely to be involved. Grandmothers' employment did not moderate their engagement in parenting behaviors. These findings are consistent with previous reports of significant parenting involvement by black extended family members. 相似文献
126.
In a direct comparison, flavor-cued rats learned to avoid shock in a two-way shuttlebox as well as, or better than, tone-cued rats. These results stand in contrast to the prevalent view that rats encounter difficulty in forming flavor-shock, but not tone-shock, associations. In attempting to account for this contrast, we note that experiments revealing cue-modality specificity employ an aversion paradigm and record ingestive behavior. It is argued that both the paradigm and the dependent variable are inappropriate for assessing shock-avoidance learning, and that cue-modality specificity in such a setting reflects paradigm and response choice rather than a general characteristic of rats. 相似文献
127.
Prompted by ongoing concerns over standards of numeracy, eight mathematics teachers from four secondary schools in south Wales formed a teacher inquiry group to research the impact of introducing whole-class interactive teaching strategies into their own practice. Possible teaching approaches and activities were developed and agreed during group meetings. These were trialled by the teachers during their normal mathematics lessons. Lesson observations, interviews with teachers and discussions at the group meetings, however, indicated that the implementation of the approaches varied significantly across teachers. This paper analyses the variation in interpretations and teaching styles, and discusses their impact on the quality of the classroom discourse. The determining features discerned within the classroom dialogue included the extent to which pupils were encouraged to reflect on their mathematical knowledge, and the ways in which teachers were able to scaffold pupils' learning. 相似文献
128.
John J. B. Ayres Howard Axelrod Elizabeth Mercker Fran Muchnik Michael Vigorito 《Learning & behavior》1985,13(1):44-50
In a conditioned suppression study with rats, CS modality (light vs. noise) and type of conditioning (on-line vs. off-line training) were manipulated. All rats were then tested on-line with only half the test trials reinforced. Some results and conclusions were as follows: (1) During initial training, suppression following reinforced noise trials was moderately strong at first but weakened over days; for the light, it was weak from the start. It was suggested that this strong influence of CS modality might complicate interpretations of posttrial suppression as a measure of US effectiveness. (2) During testing, posttrial suppression and freezing were greater following non-reinforced trials than following reinforced trials (US-omission effect), and this effect was stronger for noise than for light. Since noise also produced more freezing than light, this result favors the hypothesis that the US-omission effect is due to persistent CS-elicited freezing that is un-disrupted by a shock US. (3) Although noise produced more freezing, both noise and light produced similar barpress suppression. This result is consistent with the suggestion that noise and light acquire equal associative strength but elicit different defensive behaviors. 相似文献
129.
The paper provides quantitative estimates of the degree of substitutability between men and women faculty in higher education and examines the extent to which price (salary) differentials have played a role in altering the sex distribution in academe. Our results suggest uniformly low own-price elasticities with cross elasticities which differ by academic rank and sex. Further analysis is made of whether institutions of higher education have increased the proportion of females at the upper ranks due to salary factors. Our conclusion is that nonsalary factors appear to have been responsible for the changing sex distribution in academe. 相似文献
130.
Research has demonstrated that student evaluations of instruction are influenced by variables extraneous to the instructional procedures being evaluated. One of the most important of these is the student's motivation to take the course. The Instructional Development and Effectiveness Assessment (IDEA) system controls this variable by comparing a course evaluation to a norm group of courses having students with similar motivation. The present study examined the possibility that the IDEA procedure of having students rate their precourse motivation at theend of a course might be unacceptable, because the rating would be influenced by experiences within the course itself. The data indicated that postcourse ratings of precourse motivation do deviate somewhat from actual precourse ratings, but the deviation is not of an order of magnitude which would seriously distort the interpretation of the ratings. 相似文献