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   357篇
  免费   15篇
  2023年   3篇
  2022年   3篇
  2021年   7篇
  2020年   4篇
  2019年   9篇
  2018年   6篇
  2017年   8篇
  2016年   10篇
  2015年   9篇
  2014年   12篇
  2013年   59篇
  2012年   11篇
  2011年   19篇
  2010年   14篇
  2009年   12篇
  2008年   20篇
  2007年   13篇
  2006年   14篇
  2005年   11篇
  2004年   16篇
  2003年   16篇
  2002年   8篇
  2001年   6篇
  2000年   5篇
  1999年   5篇
  1998年   7篇
  1997年   3篇
  1996年   3篇
  1995年   4篇
  1994年   6篇
  1993年   4篇
  1992年   2篇
  1990年   4篇
  1989年   8篇
  1988年   2篇
  1987年   2篇
  1985年   2篇
  1983年   4篇
  1982年   2篇
  1981年   1篇
  1980年   1篇
  1978年   3篇
  1975年   2篇
  1974年   2篇
  1973年   2篇
  1972年   1篇
  1969年   1篇
  1968年   2篇
  1967年   2篇
  1955年   1篇
排序方式: 共有372条查询结果,搜索用时 46 毫秒
251.
Scientific cooperation between the Industrialized Countries (ICs) and the Less Developed Countries (LDCs) has evolved greatly over the last three decades and has involved a number of varied mechanisms ranging from technical assistance to collaborative research partnerships. After a brief historical review of these mechanisms and of the conceptual debates around them, this paper considers the main programs that have been established during the last 10–15 years to promote North-South scientific collaborative partnership. One of the main problems encountered in the implementation of collaborative research programs relate to the asymmetry of the collaboration and the dominance of the partners in the North. While recognizing that conditions for success may differ depending on the main objectives of the collaboration, a list of ingredients for successful collaboration is proposed in the conclusion. This is based on the experience of the programs under review. This paper was prepared while the author was a Visiting Fellow at the Center for International Science and Technology Policy, Elliott School of International Affairs, George Washington University, Washington D.C.  相似文献   
252.
253.
254.
255.
Sustained withdrawal behavior in infancy is an important alarm signal to draw attention to both organic and relationship disorders. A withdrawal scale, the Alarm Distress Baby scale (ADBB), for infants between 2 and 24 months of age was built. This article describes the construction of the scale and the assessment of its psychometric properties. The ADBB has good content validity, based on the advice of seven experts. The scale has good criterion validity: first, as a measure of the infant's withdrawal reaction, with a very good correlation between nurse and pediatrician on the ADBB (rs = 0.84), and second, as a screening procedure for detecting the developmental risk of the infant. The cutoff score of 5 with a sensitivity of 0.82 and a specificity of 0.78 was determined to be optimal for screening purposes. The scale has good construct validity, with good convergent validity with both the Spitz (1951) and the Herzog & Rathbun (1982) lists of symptoms of infant depression (rs = 0.61 and 0.60, respectively). Exploratory factor analysis showed two different factors, consistent with the scale's construct. Reliability was satisfactory with good internal consistency for both subscales (the Cronbach α = 0.80 for the first subscale and 0.79 for the second) and for the global scale (α = 0.83). The test‐retest procedure showed good stability over time (rs = 0.90 and 0.84 for the two different raters). The scale could be used in different clinical settings, provided a sufficient level of social stimulation is given to the infant in a relatively brief period of time. The scale can be used by nurses and psychologists or by medical doctors after a short period of training. © 2001 Michigan Association for Infant Mental Health.  相似文献   
256.
Jacques Arnould thanks Stephen Hawking for his warning, but then quickly moves on to contend: the present moment provides an opportunity for Homo sapiens on Earth to rediscover the virtue of discretion.  相似文献   
257.
258.
259.
Fall prevention programs have rarely been evaluated by quantitative movement analysis methods. Quantitative movement analyses could provide insight into the mechanisms underlying the effects of training. A treadmill obstacle avoidance task under time pressure has recently been used to evaluate a fall prevention exercise program for community-dwelling elderly people and it showed that participants improved their obstacle avoidance success rates. The mechanism, by which the increased success rates were achieved, however, remained to be determined. Participants were elderly who had fallen at least once in the year prior to participation. They were assigned to either the exercise or the control group. The control group did not receive any specific treatment. The exercise group was administered a five week exercise program, which consisted of exercises on a functionally oriented obstacle course, walking exercises, and practice of fall techniques. Pre- and post-intervention laboratory obstacle avoidance tests were conducted. Three possible determinants of success were investigated, namely avoidance reaction times, the distribution of avoidance strategies, and three spatial parameters (toe distance, foot clearance and heel distance). Analysis yielded significant TimexGroup interactions in heel distances. The exercise group increased heel distance, while the control group did not. Increased heel distance may result in reduced risk of heel contact with the obstacle and, consequently, larger success rates. The remaining parameters showed no effect of training. In conclusion, the training program was effective in improving time-critical obstacle avoidance skills. In every day life, these effects of training may contribute to less obstacle-related fall incidents in elderly. In addition, these findings could indicate that the execution of other time-critical events, like an actual fall, could also be improved by training.  相似文献   
260.
Abstract Eighteen patients diagnosed with burnout-related depression and receiving short-term psychodynamic group psychotherapy were included in this study. The participants completed the group version of the California Psychotherapy Alliance Scales (CALPAS) five times during treatment and evaluated the relationship positively. Alliance increased significantly as treatment progressed; however, the amount of change was small. Level of alliance to the group-as-a-whole, averaged over time, was predictive of two out of three outcome measures, whereas growth in alliance during the early phase of therapy was not predictive of outcome. Exploratory examination of the alliance at different time points showed that alliance to the group-as-a-whole at mid-phase of treatment was substantially correlated with outcome. Personality features such as dismissing attachment style and being overly nurturant or exploitable were predictive of early growth in alliance.  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