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   44210篇
  免费   1736篇
  国内免费   31篇
  2020年   493篇
  2019年   652篇
  2018年   886篇
  2017年   932篇
  2016年   931篇
  2015年   678篇
  2014年   799篇
  2013年   3843篇
  2012年   1402篇
  2011年   1554篇
  2010年   983篇
  2009年   1016篇
  2008年   1389篇
  2007年   1321篇
  2006年   1273篇
  2005年   1110篇
  2004年   1031篇
  2003年   1088篇
  2002年   1031篇
  2001年   1425篇
  2000年   1377篇
  1999年   1046篇
  1998年   544篇
  1997年   488篇
  1996年   469篇
  1995年   450篇
  1994年   443篇
  1993年   437篇
  1992年   847篇
  1991年   837篇
  1990年   779篇
  1989年   717篇
  1988年   663篇
  1987年   682篇
  1986年   660篇
  1985年   756篇
  1984年   622篇
  1983年   498篇
  1982年   413篇
  1981年   424篇
  1979年   556篇
  1978年   450篇
  1977年   419篇
  1976年   399篇
  1975年   501篇
  1974年   517篇
  1973年   552篇
  1972年   438篇
  1968年   401篇
  1966年   407篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
Evaluated the effect of varied physician affect on subject recall, anxiety, and perceptions in a simulated tense and ambiguous medical situation. Forty women at risk for breast cancer viewed videotapes of an oncologist presenting--with either worried or nonworried affect--mammogram results. Although the mammogram results and the oncologist were the same in both presentation, analyses indicated that, compared to the women receiving the results from a nonworried physician, the women receiving the results from a worried physician recalled significantly less information, perceived the clinical situation as significantly more severe, reported significantly higher levels of state anxiety, and had significantly higher pulse rates. These results suggest that physician affect plays a critical role in patient reaction to medical information. Implications for compliance research, patient satisfaction, and physician training are discussed.  相似文献   
32.
33.
34.
35.
Although perceived health risk plays a prominent role in theories of health behavior, its empirical role in risk taking is less clear. In Study 1 (N = 129), 2 measures of drivers' risk-taking behavior were found to be unrelated to self-estimates of accident concern but to be related to self-ratings of driving skill and the perceived thrill of driving. In Study 2 (N = 405), out of a wide range of potential influences, accident concern had the weakest relationship with risk taking. The authors concluded that although health risk is a key feature in many theories of health behavior and a central focus for researchers and policy makers, it may not be such a prominent factor for those actually taking the risk.  相似文献   
36.
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   
37.
38.
39.
Godden  David 《Topoi》2019,38(4):725-750
Topoi - Robert Fogelin argued that the efficacy of our acts of reasons-giving depends on the normalcy of our discourse—to the extent that discourse is not normal disagreements occurring in it...  相似文献   
40.
OBJECTIVE: This report reviews the evidence that informs the role of health and mental health care providers in addressing youth smoking cessation. DESIGN: Qualitative literature review. RESULTS: Physicians do not consistently screen adolescents for tobacco use and fail to provide recommended cessation advice. Challenges to addressing smoking cessation include the need for procedures to ensure confidentiality and the existence of competing demands to provide other services. Few published studies have specifically addressed the effectiveness of clinical interventions. Interventions that require return visits or follow-up phone contacts are technically difficult to implement in this population. Successful interventions may require resources not available in nonresearch settings. Most studies have used brief clinical intervention as a control condition, making it impossible to evaluate its effectiveness. CONCLUSION: There is little evidence that supports current clinical smoking cessation guidelines for adolescents. More research is needed to develop inexpensive, efficient clinical interventions that can provide youths access to smoking cessation help. Future challenges include reorganizing clinical systems to offer greater counseling by support staff or in electronic formats and to provide effective booster messages and follow-up care in a population that is difficult to track.  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