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   78012篇
  免费   3197篇
  国内免费   49篇
  81258篇
  2020年   888篇
  2019年   1108篇
  2018年   1570篇
  2017年   1559篇
  2016年   1674篇
  2015年   1116篇
  2014年   1379篇
  2013年   6606篇
  2012年   2492篇
  2011年   2637篇
  2010年   1565篇
  2009年   1626篇
  2008年   2364篇
  2007年   2320篇
  2006年   2065篇
  2005年   1849篇
  2004年   1827篇
  2003年   1641篇
  2002年   1700篇
  2001年   2500篇
  2000年   2442篇
  1999年   1859篇
  1998年   939篇
  1997年   827篇
  1996年   762篇
  1995年   781篇
  1993年   754篇
  1992年   1479篇
  1991年   1399篇
  1990年   1366篇
  1989年   1260篇
  1988年   1240篇
  1987年   1172篇
  1986年   1180篇
  1985年   1269篇
  1984年   1021篇
  1983年   899篇
  1982年   739篇
  1979年   1036篇
  1978年   764篇
  1976年   717篇
  1975年   870篇
  1974年   1006篇
  1973年   983篇
  1972年   875篇
  1971年   765篇
  1969年   719篇
  1968年   904篇
  1967年   859篇
  1966年   775篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
22.
23.
24.
The essay examines intellectual virtue in the Summa theologiae, taking it as an interpretative key to the epistemology of the Summa theologiae as a whole. Because Aquinas blurs the line between the acquired and the theological virtues, and between virtues and the gifts of the Spirit, it becomes impossible to maintain the distinction between the realms of nature and grace, or between natural reason and revealed truth: grace permeates the most ordinary activities of human reasoning. This reading of the Summa theologiae raises questions about many contemporary debates, particularly those concerning natural law.  相似文献   
25.
26.
27.
28.
29.
Intention is theorized as the proximal determinant of behavior in some theories of motivation, but the need to understand predictors of action control (i.e., translating an intention into behavior) is warranted to tailor physical activity intervention efforts. The purpose of this study was to examine constructs of the transtheoretical model of behavior change (TTM) as predictors of physical activity intention-behavior profiles across 6 months in a large Canadian sample (N = 1,192). Results showed that 5 of the 8 possible intention-behavior profiles had a substantial number of participants: nonintenders, unsuccessful adopters, successful adopters, unsuccessful maintainers, and successful maintainers. Constructs of the TTM distinguished (p < .01) intention-behavior profiles. Self-efficacy and the behavioral processes of change were particularly good predictors of action control (p < .01), but disaggregated beliefs and processes identified specific intervention targets for successful physical activity adoption and maintenance. The results validate that both action planning and action control are important when understanding physical activity behavior.  相似文献   
30.
The authors used recursive partitioning methods to identify combinations of baseline characteristics that predict 2-year physical activity success in each of 3 physical activity interventions delivered in the multisite Activity Counseling Trial. The sample consisted of 874 initially sedentary primary care patients, ages 35-75 years, who were at risk for cardiovascular disease. Predictors of 2-year success were specific to each intervention and represented a range of domains, including physiological, demographic, psychosocial, health-related, and environmental variables. The results indicate how specific patient subgroups (e.g., obese, unfit individuals; high-income individuals in stable health) may respond differently to varying levels and amounts of professional assistance and support. The methods used provide a practical first step toward identifying clinically meaningful patient subgroups for further systematic investigation.  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