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   15413篇
  免费   217篇
  国内免费   119篇
教育   10576篇
科学研究   2044篇
各国文化   109篇
体育   1350篇
综合类   11篇
文化理论   120篇
信息传播   1539篇
  2020年   209篇
  2019年   307篇
  2018年   424篇
  2017年   370篇
  2016年   383篇
  2015年   242篇
  2014年   315篇
  2013年   2618篇
  2012年   297篇
  2011年   337篇
  2010年   242篇
  2009年   240篇
  2008年   252篇
  2007年   287篇
  2006年   274篇
  2005年   270篇
  2004年   254篇
  2003年   247篇
  2002年   238篇
  2001年   255篇
  2000年   271篇
  1999年   274篇
  1998年   142篇
  1997年   149篇
  1996年   183篇
  1995年   169篇
  1994年   131篇
  1993年   142篇
  1992年   216篇
  1991年   222篇
  1990年   230篇
  1989年   258篇
  1988年   209篇
  1987年   225篇
  1986年   219篇
  1985年   250篇
  1984年   222篇
  1983年   211篇
  1982年   176篇
  1981年   168篇
  1980年   157篇
  1979年   244篇
  1978年   190篇
  1977年   180篇
  1976年   148篇
  1975年   132篇
  1974年   151篇
  1973年   132篇
  1972年   107篇
  1971年   119篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
891.
The purpose of this study was to examine whether an innovative, inclusive and integrated 12-week exercise, behaviour change and nutrition advice-based weight management programme could significantly improve the cardiovascular risk factors of overweight and obese men and women over the age of 35. One hundred and ninety-four men and 98 women (mean age?=?52.28?±?9.74 and 51.19?±?9.04) attending a community-based intervention delivered by Notts County Football in the Community over one year, took part in the study. Height (m), weight (kg), fitness (meters covered during a 6?min walk) and waist circumference (cm) were measured at weeks 1 and 12 as part of the intervention. Changes in body weight, waist circumference and fitness for men and women were measured by a 2-way repeated measures ANOVA, with significance set to p?<?0.05.Weight, waist circumference and fitness significantly improved over time in both men (4.96?kg, 6.29?cm, 70.22?m; p?<?0.05) and women (4.26?kg, 5.90?cm, 35.29?m; p?<?0.05). The results demonstrated that the FITC lead weight loss intervention was successful in significantly improving cardiovascular risk factors in both men and women. In particular, the weight loss reductions achieved were comparable to those seen in similar, more costly men-only programmes. This is the first study to demonstrate the efficacy of such an intervention in an inclusive, mixed gender programme and more specifically, in women.  相似文献   
892.
893.
OBJECTIVE: The goals of this current project were to expand and elaborate on the results of Varia, Abidin, and Dass' (1996) study to better understand what historical parenting factors may contribute in creating a "Minimizing" perception of childhood psychological abuse. A second objective included examining the association between perceptual styles and adult ratings of adult relationship satisfaction. METHOD: Ninety individuals from a non-clinical adult sample completed self-report questionnaires regarding psychological maltreatment and adult relationship satisfaction. Three groups were created and compared using analysis of variance. The groups were (I) "Non-Abused," consistent reporters of no abuse; (II) "Acknowledgers," consistent reporters of abuse; and (III) "Minimizers," reporters of abuse, but do not label themselves as having been abused. RESULTS: Results indicated a continuum effect with the Non-Abused individuals reporting the highest level of maternal warmth and affection, the Acknowledgers reporting the lowest, with the Minimizers in the middle. The Non-Abused group reported the healthiest adjustment in terms of adult relationship satisfaction. While Minimizers and Acknowledgers reported similar levels of psychologically abusive experiences, Acknowledgers reported more difficulties with adult relationships. CONCLUSIONS: This study highlights the importance of studying Minimizers, a group which describes abusive events but minimizes the meaning and scope of these experiences. The relatively higher levels of maternal care which the Minimizers reported is hypothesized to be associated with their perceptions that they were not abused and acted as a protective factor associated with better quality adult relationships. The varying degrees of nurturance and care in the early family environment of abused individuals is speculated to be associated with distinct perceptual styles.  相似文献   
894.
895.
896.
897.
898.
Supplying MEDLINE services to a widely dispersed user population in the developing countries creates numerous problems not encountered by other MEDLINE centres. The inability to interact with the user complicates system promotion and makes search formulation sometimes a gamble. Nevertheless, an evaluation survey has shown high user satisfaction. Of great concern is the still inadequate solution of document delivery. Near-term objectives are the broadening of geographic coverage and the integration of search processing with supporting hard copy supply.  相似文献   
899.
900.
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