全文获取类型
收费全文 | 1360篇 |
免费 | 9篇 |
国内免费 | 1篇 |
专业分类
教育 | 1038篇 |
科学研究 | 73篇 |
各国文化 | 16篇 |
体育 | 99篇 |
综合类 | 1篇 |
文化理论 | 14篇 |
信息传播 | 129篇 |
出版年
2019年 | 19篇 |
2018年 | 31篇 |
2017年 | 29篇 |
2016年 | 32篇 |
2015年 | 16篇 |
2014年 | 25篇 |
2013年 | 324篇 |
2012年 | 32篇 |
2011年 | 29篇 |
2010年 | 32篇 |
2009年 | 25篇 |
2008年 | 30篇 |
2007年 | 34篇 |
2006年 | 19篇 |
2005年 | 17篇 |
2004年 | 17篇 |
2003年 | 20篇 |
2002年 | 25篇 |
2001年 | 23篇 |
2000年 | 19篇 |
1999年 | 19篇 |
1998年 | 22篇 |
1997年 | 18篇 |
1996年 | 25篇 |
1995年 | 16篇 |
1994年 | 26篇 |
1993年 | 28篇 |
1992年 | 16篇 |
1991年 | 25篇 |
1990年 | 16篇 |
1989年 | 25篇 |
1988年 | 12篇 |
1987年 | 15篇 |
1986年 | 10篇 |
1985年 | 13篇 |
1984年 | 15篇 |
1983年 | 16篇 |
1982年 | 19篇 |
1981年 | 12篇 |
1980年 | 14篇 |
1979年 | 20篇 |
1978年 | 14篇 |
1977年 | 13篇 |
1976年 | 15篇 |
1974年 | 12篇 |
1973年 | 16篇 |
1972年 | 11篇 |
1971年 | 14篇 |
1970年 | 11篇 |
1967年 | 9篇 |
排序方式: 共有1370条查询结果,搜索用时 31 毫秒
21.
Kim M. Tsai Ronald E. Dahl Michael R. Irwin Julienne E. Bower Heather McCreath Teresa E. Seeman David M. Almeida Andrew J. Fuligni 《Child development》2018,89(5):1577-1588
The current study examines the association between parental support and adolescent sleep under varying levels of family stress. Participants included 316 adolescents (Mage = 16.40 years, 43% male) and their parents (Mage = 45.67 years, 91% mothers) from diverse ethnic backgrounds. Both adolescents and parents completed questionnaires and adolescents wore wrist actigraphs and completed self‐reports on their sleep for 7 consecutive days. Results indicated that under contexts of family stress, more parental support was linked to longer sleep duration, less sleep variability, and less time spent awake during the night. Findings suggest that under contexts of family stress, cohesive family relationships may provide a sense of stability and security that is necessary for healthful sleep. 相似文献
22.
23.
Ronald J. Raven 《科学教学研究杂志》1972,9(3):207-212
The purpose of this study was to determine if achievement on a series of problems was affected by differences among task values within a dimension. Values within inference pattern, goal object, and percept dimensions were studied. One hundred and sixty primary school children participated in the study. An analysis of the results of their achievement on the tasks indicate that task solution is affected by the dimension values used in this study. The results of the study suggest that a multidimensional scale of task dimension values should be constructed in order to assist the curriculum specialist in the construction and sequencing of concept tasks for specific grade levels. 相似文献
24.
25.
26.
The purpose of this national study was to establish an initial database of the essential competencies needed for working with students who are deaf or hard of hearing with additional disabilities. Surveys were sent to program supervisors across the United States; each supervisor was asked to give the survey to a professional on his or her staff who worked with students who were deaf or hard of hearing with additional disabilities. Respondents indicated that there were 67 specific competencies needed for working with this diverse population of students. A list of the specific competencies and a rationale for providing more in-depth training for teachers is provided. 相似文献
27.
This study assessed the perceptions of 146 gifted and 115 non-gifted high school biology students and investigated associations
between student perceptions and cognitive achievement. The What Is Happening In this Class? (WIHIC) was used to assess perceptions
of actual and preferred learning environments. Data indicated that all students preferred a more favourable environment than
the one that they were currently experiencing, but gifted students perceived their actual environment more positively than non-gifted students. Statistically significant associations between the actual learning
environment and achievement on a standardised biology test were found for the majority of scales. Teacher Support, Investigation
and Equity were all statistically significant independent predictors of student achievement, while Student Cohesiveness had
a negative association with achievement. Interviews revealed that students interpreted some WIHIC items differently from how
the developers had intended. 相似文献
28.
29.
Graduation patterns were examined for 905 deaf students (1990-1998) at the National Technical Institute for the Deaf. Students with higher reading and language skills had the best overall graduation percentage. Comparison of recipients of different degrees--bachelor of science (BS) versus fine arts (BFA); associate of applied science (AAS) versus occupational studies (AOS)--showed 92% of BS and 82% of AAS graduates reading at the 9th-grade level or above, versus 65% of BFA and 47% of AOS graduates. Interestingly, 80% of non-degree-earning students read at the 9th-12th grade levels; in absolute terms, they outnumbered graduates with similar reading skills in the AAS and BFA programs combined, and in the BS program. This indicates a need for improved counseling, placement, and retention strategies. Students performed similarly across degree categories, regardless of curriculum requirements and difficulty. Only non-degree-earning students had significantly lower grade averages. 相似文献
30.
Ronald E. Rice 《The Information Society》2005,21(4):285-299
This study summarizes prior reviews of new media and Internet research, and the growth of the term Internet in academic publications and online newsgroups. It then uses semantic network analysis to summarize the interests and concepts of an interdisciplinary group of Internet researchers, as represented by session titles and paper titles and abstracts from the 2003 and 2004 Association of Internet Researchers conferences. In both years, the most frequent words appearing in the paper abstracts included Internet, online, community, social, technology, and research. The 2003 papers emphasized topics such as the social analysis/research of online/Internet communication, community, and information, with particular coverage of access, individuals, groups, digital media, culture; role and process in e-organizations; and world development. The 2004 papers emphasized topics such as access; news and social issues; the role of individuals in communities; user-based studies; usage data; and blogs, women, and search policy, among others. 相似文献