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   750篇
  免费   61篇
  国内免费   29篇
  2024年   4篇
  2023年   39篇
  2022年   36篇
  2021年   34篇
  2020年   57篇
  2019年   34篇
  2018年   34篇
  2017年   58篇
  2016年   55篇
  2015年   33篇
  2014年   41篇
  2013年   133篇
  2012年   25篇
  2011年   28篇
  2010年   9篇
  2009年   25篇
  2008年   26篇
  2007年   16篇
  2006年   19篇
  2005年   15篇
  2004年   14篇
  2003年   9篇
  2002年   13篇
  2001年   6篇
  2000年   11篇
  1999年   7篇
  1998年   8篇
  1997年   3篇
  1996年   3篇
  1995年   3篇
  1994年   4篇
  1993年   8篇
  1992年   1篇
  1991年   2篇
  1990年   3篇
  1987年   2篇
  1986年   4篇
  1985年   1篇
  1984年   6篇
  1983年   2篇
  1979年   5篇
  1978年   3篇
  1976年   1篇
排序方式: 共有840条查询结果,搜索用时 15 毫秒
51.
52.
Rheumatoid arthritis (RA) prevalence increases with age and old people are special patient population. The recognition of functional disability related to RA could be challenging in elderly patients because aging itself and potential co-morbid disease may also cause functional disability. In this study, we aimed to look at the correlation between disease activity and functional disability in elderly RA patients. Elderly RA patients, ≥65 years old at their routine visits were included in the study. The composite ‘disease activity score’ in 28 joints (DAS-28) was used to determine disease activity groups. Health assessment questionnaire (HAQ) scores were calculated to describe the functional disability and compared across the disease activity groups. Two hundred and fifty-eight RA patients with the mean age of 71 ± 5 (65–90) and a total disease duration of 8.4 ± 8.5 (.5–50) years were recruited. The proportion of patients with high and moderate disease activity was 70%. HAQ scores were significantly correlated with disease activity (p < .05). Functional disability estimated by HAQ was correlated with disease activity in elderly patients with RA  相似文献   
53.
Few studies have focused on PhD students in France despite the fact that this population appears to be particularly vulnerable to stress and often faces precariousness. This research investigated associations between socio-demographic factors, health behaviours, perceived stress and physical health in a wide sample of PhD students (n = 1923) in order to have a better understanding of this population's specificities. Our results indicated that stress is a critical issue among PhD candidates. Predictors of perceived stress were: gender, age, satisfaction with supervision, sleep quality and sports practice. Findings from this study confirm the relevance of the transactional model to investigate students’ health issues and suggest that physical activity and stress management should be encouraged through health promotion programs.  相似文献   
54.
Physical inactivity and limited time spent in nature are major societal concerns that affect the mental and emotional health of youth in the United States. As such, this study explored girls’ perspectives of barriers to outdoor physical activity using a qualitative participatory action research method called photovoice. Six themes emerged from data representing the girls’ perspectives of barriers to outdoor physical activity through photovoice: Very Busy Schedule, Social Media, Health Concerns, Indoor Activity Instead of Outdoor Activity, Electronic Devices, and Way of Life. Researchers address how counselors can use these findings to advocate on this issue, given that counselors are called to advocate at multiple levels to address barriers that inhibit the growth and development of clients.  相似文献   
55.
Background: As an important group of health care professionals, paramedics accomplish sophisticated and frequently stressful tasks.

Design: The study investigated self-reported stress burden, self-reported health status, coping strategies, personality traits and psychophysiological reactivity in paramedics.

Methods: 30 paramedics were compared with 30 professionals from other disciplines, in terms of self-reported stress, physical complaints, coping strategies, personality traits and psychophysiological reactivity during aversive visual and acoustic stimuli, and cognitive challenge. Regression analyses were performed for the prediction of stress burden and physical complaints in paramedics according to coping and personality factors.

Results: Paramedics reported lower stress and less somatic complaints, and exhibited reduced electrodermal activity and heart rate responses to experimental stimuli, as well as higher respiratory sinus arrhythmia. They indicated less negative coping strategies, reduced empathy, and higher conscientiousness and sensation seeking. Higher self-reported stress burden and more physical symptoms were associated inter alia with more negative coping strategies, less conscientiousness and lower empathy.

Conclusion: The findings support the notion of reduced self-reported stress burden, and improved general health and stress resistance in paramedics. In addition to health benefits, stress tolerance may contribute to the prevention of performance decline during situations in which health and life are at stake.  相似文献   

56.
I present a viable learning trajectory for prospective elementary teachers’ number sense development with a focus on whole-number place value, addition, and subtraction. I document a chronology of classroom mathematical practices in a Number and Operations course. The findings provide insights into prospective elementary teachers’ number sense development. These include the role of standard algorithms and their relationship to the evolution of classroom mathematical practices that involve reasoning flexibly about number composition, sums, and differences.  相似文献   
57.
58.
59.
We examined the utility of the bi-factor model for disentangling general motivation and specific motivations (i.e., amotivation, external, introjected, identified, and intrinsic regulations) in relation to goal progress and physical activity (PA). Participants (N = 186 undergraduate students; Mage = 19.26 years) completed assessments of motivation and PA at Time 1. Four weeks later, PA and goal progress were assessed at Time 2. Results indicated that the exploratory bi-factor model specifying motivational regulations as the specific factors and general motivation as the general factor was a good fit to the data. Results of the structural equation model indicated that identified and intrinsic regulations and general motivation predicted concurrent PA at Time 1. A novel finding was that controlling for concurrent PA at Time 1, general motivation emerged as the only predictor of Time 2 goal progress and PA. Results highlight the importance of examining general motivation in addition to quality of motivation in tandem because general motivation emerged as the sole significant longitudinal predictor of PA outcomes.  相似文献   
60.
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