首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   10180篇
  免费   117篇
  国内免费   122篇
教育   6500篇
科学研究   1234篇
各国文化   90篇
体育   1633篇
综合类   19篇
文化理论   66篇
信息传播   877篇
  2021年   80篇
  2020年   155篇
  2019年   198篇
  2018年   281篇
  2017年   280篇
  2016年   262篇
  2015年   183篇
  2014年   235篇
  2013年   1578篇
  2012年   213篇
  2011年   230篇
  2010年   190篇
  2009年   213篇
  2008年   192篇
  2007年   182篇
  2006年   199篇
  2005年   173篇
  2004年   382篇
  2003年   353篇
  2002年   336篇
  2001年   401篇
  2000年   243篇
  1999年   164篇
  1998年   110篇
  1997年   100篇
  1996年   97篇
  1995年   111篇
  1994年   102篇
  1993年   78篇
  1992年   153篇
  1991年   120篇
  1990年   136篇
  1989年   149篇
  1988年   113篇
  1987年   130篇
  1986年   123篇
  1985年   135篇
  1984年   119篇
  1983年   124篇
  1982年   98篇
  1981年   84篇
  1980年   90篇
  1979年   135篇
  1978年   87篇
  1977年   73篇
  1976年   90篇
  1975年   65篇
  1974年   72篇
  1973年   68篇
  1971年   67篇
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
951.
Intercorrelations among multiple true-false items were examined to determine to what extent each true-false option can be treated as independent. Results from 157 health science students and 170 medical students showed that correlations between true-false options associated with the same stem were from 2.6 to 7.0 times larger than those from different stems. This suggests that results from previous research indicating that each true-false option could be treated as an independent item cannot be generalized to other tests and examinee populations without supporting evidence. Four scoring methods were explored which varied chance success levels and scoring for partial knowledge. The results showed that scoring methods incorporating partial knowledge were more reliable and possessed greater concurrent and predictive validity than those minimizing chance success. Methods for computing reliability estimates were compared and suggestions were offered regarding practical use  相似文献   
952.
A mother's question of whether to believe her child's disclosure of intrafamily child sexual abuse is complex, with many factors influencing her conclusion. Variables related to the abuse and to the family's functioning are examined to determine if particular circumstances are too threatening to mothers, resulting in their disbelief. The findings indicate that the age of the victim, nature of the abuse, presence of the mother in the home during the abuse, relationship of the victim to the offender, prior physical abuse of the child, and alcohol abuse by the offender all contribute to mother's conclusion regarding the reported abuse. The majority of mothers do believe their child, with difficult situations and other family stressors occasionally detracting from a mother's willingness to accept the report.  相似文献   
953.
954.
955.
College students completed a questionnaire that assessed their attitudes toward the level of male responsibility in abortion decisions. Overall, both men and women thought that men should have some degree of involvement in the abortion decision. However, as expected by the first hypothesis, men indicated a desire for more responsibility in the abortion decision than women thought the men should have. A second hypothesis predicted women would feel more strongly than men that abortion was strictly a woman's issue. Contrary to the hypothesis, women tended to disagree that abortion was strictly a women's issue. Implications of the findings are discussed.  相似文献   
956.
957.
958.
This article presents evidence that girls are not receiving an equal education and describes a program model which offers solutions for counselors and teachers to adopt.  相似文献   
959.
960.
For 2 h prior to their daily meal of Purina Chow, rats (which were 14% below ad-lib weight levels) had access to a sucrose solution. For half (Group 16-4), the solution was alternated daily between 18% and 4%; for the other half (Group 4-4), the solution was always 4%. On 18% days, Group 16-4 consumed significantly more calories and gained significantly more weight than did Group 4-4, because of a greater consumption of sucrose calories (Purina intake was similar for the two groups). On 4% days, however, Group 16-4 consumed both significantly fewer sucrose calories and significantly fewer Purina calories than did Group 4-4. These two contrast effects resulted in a 17% shortfall in total caloric intake for Group 16-4 on 4% days. As a consequence, Group 16-4 showed a significant drop in body weight, compared to Group 4-4, on 4% days. A second experiment was carried out to investigate whether the contrast-induced reduction in Purina intake shown by Group 16-4 on 4% days would be eliminated if (1) a 30-min interval separated sucrose ingestion from Purina ingestion, or (2) a 25-min interval plus 5-mmn exposure to 16% sucrose separated ingestion of 4% sucrose from Purina ingestion. Purina intake was still suppressed in Group 16-4 under both conditions.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号