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   177240篇
  免费   7799篇
  国内免费   164篇
  185203篇
  2021年   1522篇
  2020年   2799篇
  2019年   3456篇
  2018年   3628篇
  2017年   4046篇
  2016年   4693篇
  2015年   3933篇
  2014年   4832篇
  2013年   23544篇
  2012年   4828篇
  2011年   3955篇
  2010年   4034篇
  2009年   4833篇
  2008年   4105篇
  2007年   3713篇
  2006年   4242篇
  2005年   4179篇
  2004年   3652篇
  2003年   3281篇
  2002年   3130篇
  2001年   3381篇
  2000年   3215篇
  1999年   3230篇
  1998年   2838篇
  1997年   2682篇
  1996年   2582篇
  1995年   2438篇
  1994年   2396篇
  1993年   2354篇
  1992年   2699篇
  1991年   2482篇
  1990年   2394篇
  1989年   2264篇
  1988年   2254篇
  1987年   2270篇
  1986年   2226篇
  1985年   2414篇
  1984年   2551篇
  1983年   2347篇
  1982年   2389篇
  1981年   2356篇
  1980年   2213篇
  1979年   2270篇
  1978年   2228篇
  1977年   2170篇
  1976年   1975篇
  1975年   2056篇
  1974年   2099篇
  1973年   2003篇
  1972年   1540篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
751.
Genetic counselors have participated in the Michigan Newborn Screening Program on a contractual basis since 1988. Their role includes newborn screening education and training, newborn nursery site visits, and monitoring newborn screening in hospitals. Their impact has been to improve the quality of newborn screening services by reducing errors and increasing completion of data fields on newborn screening cards, improving hospital nursery cooperation and problem solving, and enhancing health department response to specific problems.  相似文献   
752.
753.
Instruction in baby massage and the Burleigh Relaxation Bath technique was given to one-half of our sample of 32 couples who had just had their first child. This brief intervention, given at 4 weeks post-partum, led to beneficial behavioural and psychological effects for the family system when assessed at 12 weeks postpartum. Depression and marital satisfaction were assessed with mothers and fathers at 4 weeks and 12 weeks after the birth of their child, and self-esteem was measured at 12 weeks only. The mothers and fathers who were shown baby bathing and massage techniques showed higher degrees of marital satisfaction and self-esteem, as well as lower levels of depression at 12 weeks post-partum, than parents who did not receive instruction. It seems likely that brief interventions which educate new parents concerning functional techniques of baby care may favourably affect their feelings of competence and be of benefit to the entire family system.  相似文献   
754.
755.
756.
The purpose of this research was to examine the relationship between parents' perceptions of marital satisfaction and family stress and their third grade children's classroom behavior. Twenty-one married couples completed questionnaires during home visits. Behavior observations were made from videotapes of children recorded in their classroom during lunch and group academic periods on each of three days. Frequencies of peer interactions, solitary behaviors, and teacher interactions were coded. Regression analyses showed that mothers' level of marital satisfaction (but not fathers') predicted their children's frequency of peer interactions during lunch. Fathers' level of perceived family stress (but not mothers') predicted their children's frequency of peer interactions during lunch. Neither measure for either parent was related to the frequency of peer interactions, solitary behaviors, or teacher interactions observed during the academic sessions. These findings highlight the importance of assessing the potential differential relation of parent variables to children's trans-situational behaviors, and the examination of these variables in relation to different social-environmental contexts in which children participate outside the home.  相似文献   
757.
This brief report proposes an extension of the traditional Alternating Treatments Design that would be acceptable to use in hospital and residential settings where subjects are often not concurrently available. Concerns about the inability of traditional designs to work in these special situations and the emergence of a “scientist–practitioner split” are discussed. An example of how the Extended Alternating Treatments Design might be used is provided.  相似文献   
758.
The authors explored the relationship between family support and adjustment for adult men in a detention center, as measured by a staff rating scale completed by the appropriate counselor.  相似文献   
759.
The author describes mythical beliefs, thinking errors, and faulty attitudes collected from a group of male juvenile sex offenders. Therapists need this information to develop effective treatment strategies for replacing distortions and misperceptions with correct and moral information as a foundation for change.  相似文献   
760.
We examined two systems of assessing family interactions that are in common usage: a home based observation of free parent-child interaction and a clinic based observation of a structured mother-child problem solving discussion. Participants were 18 depressed, 27 conduct disordered and 16 comparison children and their mothers. Results indicated that: 1) these observations may yield very different data about child, and to a lesser extent, parent behavior, 2) parental affect in the clinic was related to their level of aversive behaviour in the home, 3) levels of both aversive and positive behavior for children and their mothers were correlated within each setting, 4) accuracy of diagnostic classifications made on the basis of the observational data were highest for comparison and conduct disordered children, but lowest for depressed children observed in the clinic, and 5) the inclusion of data on mothers' behavior increased classification accuracy for conduct disordered children only.  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