全文获取类型
收费全文 | 701篇 |
免费 | 30篇 |
专业分类
各国政治 | 53篇 |
工人农民 | 98篇 |
世界政治 | 82篇 |
外交国际关系 | 42篇 |
法律 | 274篇 |
中国政治 | 3篇 |
政治理论 | 174篇 |
综合类 | 5篇 |
出版年
2023年 | 2篇 |
2021年 | 5篇 |
2020年 | 17篇 |
2019年 | 14篇 |
2018年 | 24篇 |
2017年 | 25篇 |
2016年 | 27篇 |
2015年 | 13篇 |
2014年 | 14篇 |
2013年 | 123篇 |
2012年 | 22篇 |
2011年 | 12篇 |
2010年 | 16篇 |
2009年 | 19篇 |
2008年 | 17篇 |
2007年 | 29篇 |
2006年 | 27篇 |
2005年 | 21篇 |
2004年 | 19篇 |
2003年 | 19篇 |
2002年 | 16篇 |
2001年 | 12篇 |
2000年 | 17篇 |
1999年 | 22篇 |
1998年 | 10篇 |
1997年 | 12篇 |
1996年 | 9篇 |
1995年 | 5篇 |
1994年 | 11篇 |
1993年 | 12篇 |
1992年 | 10篇 |
1991年 | 9篇 |
1990年 | 11篇 |
1989年 | 10篇 |
1988年 | 16篇 |
1987年 | 11篇 |
1986年 | 13篇 |
1985年 | 4篇 |
1984年 | 10篇 |
1983年 | 7篇 |
1982年 | 5篇 |
1981年 | 3篇 |
1980年 | 5篇 |
1979年 | 6篇 |
1978年 | 2篇 |
1976年 | 5篇 |
1968年 | 3篇 |
1966年 | 1篇 |
1965年 | 1篇 |
1943年 | 1篇 |
排序方式: 共有731条查询结果,搜索用时 0 毫秒
531.
532.
Phares Vicky Steinberg Ari R. Thompson J. Kevin 《Journal of youth and adolescence》2004,33(5):421-429
The connections between body image disturbance and psychological functioning have been well established in samples of older adolescent girls and young women. Little is known, however, about body image in younger children. In particular, little is known about possible gender differences in preadolescent children. The current study explored self-reported body image disturbance and psychological functioning in relation to peer and parental influences in 141 elementary school-aged girls and boys aged 8–11. Results suggest that girls are more concerned about dieting and are more preoccupied with their weight than are boys. Girls also reported a greater drive for thinness and a higher level of family history of eating concerns than did boys. Correlations suggested that girls' experiences of body image concerns (body dissatisfaction, bulimia, and drive for thinness) were related to a number of factors (such as family history of eating concerns, peer influences, teasing, depression, and global self-worth) whereas boys' experiences of body image concerns were related to fewer factors. On the basis of these findings, the assessment and treatment of body image concerns in preadolescent children (especially girls) are of great importance. Implications for intervention and prevention programs are discussed. 相似文献
533.
Sue Vardon 《Australian Journal of Public Administration》1997,56(1):127-129
Public servants should identify their clients. As a statement of modern practice it seems unobjectionable. The emphasis of modern management has shifted from die inputs and processes to the outputs and recipients of government services. The language of the public sector has been infused with the rhetoric of the private, with discussion of customers and clients, rather than, as previously, recipients and patients. In many places the benefits are apparent, with officials less concerned with ensuring that every minute process is satisfied and more directed to the needs of those whom they service. My concern here is not to challenge the notion that a concentration on clients and customers is desirable; in places it clearly is. Rather I want to suggest that while a client focus may be applicable in some facets of public policy it is not universally so. There are instances where the attempt to classify everyone as clients may be counterproductive and strip the concept of useful meaning. 相似文献
534.
Seasonality in suicide rates has long been reported. Spring peaks in suicide deaths have been positively correlated with the proportion of the workforce engaged in agriculture. Some studies have indicated that suicides using violent methods are more likely to show seasonality. Recent research has suggested that seasonal patterns have diminished. This study examined deaths in male farmers, an occupational group which might be expected to be more vulnerable to seasonal influences because of the nature of their work and the relatively high proportion of farmers using violent methods for suicide. Data on suicides between 1982 and 1999 by males in England and Wales aged 15 years and over were provided by the Office for National Statistics. Seasonal patterns of suicide in farmers and nonfarmers were examined by nonparametric tests and harmonic analysis. No significant seasonal variation was found for farmers. For nonfarmers, although a chi-square test showed significant variation in monthly distribution, this was not found when a harmonic analysis was applied. There was no significant difference in the variation of violent suicides throughout the year. This study reinforces recent findings that seasonal variation in suicide appears to be diminishing, even in an occupational group where this might be expected. 相似文献
535.
536.
537.
This article offers a brief summary of the workers' compensation and Social Security Disability Insurance programs. Information highlighted includes the differences between the two programs' types and terms of coverage. It compares the differing patterns in workers' compensation and Social Security disability benefits as a percentage of wages over the past few decades and considers the potential causes for such trends. The article also explains the offset provision included in the 1965 Social Security Amendments, the intention behind the offset, and how and when offsets are applied. 相似文献
538.
539.
540.
Cina SJ Thompson WC Fischer JR Brown DK Titus JM Smialek JE 《The American journal of forensic medicine and pathology》1999,20(4):333-337
Pathologists frequently examine victims of sudden cardiac death. In some cases, a firm diagnosis of cardiac-related death can be made based on conclusive gross and histologic findings. In many other cases, we find evidence supportive of, but not diagnostic of, cardiac death (e.g., atherosclerotic coronary artery disease, cardiomegaly, myocardial scarring). A final cohort consists of cases of sudden death with minimal to mild cardiac disease, no other significant pathology, and negative toxicologic studies. This prospective study compared 38 cardiac-related deaths with 52 control cases with respect to concentrations of pericardial cardiac troponin I (cTnI), heart weight, evidence of old and/or recent myocardial injury, and presence of significant coronary artery disease. The influence of documented chest trauma and/or perimortem cardiopulmonary resuscitation (CPR) on levels of cTnI was also analyzed. Even though median cTnI levels were significantly higher in cardiac deaths than in controls (p = .003), cTnI was not found to be a significant predictor of cardiac deaths, as determined by discriminant analysis (p = .52). Heart weight >500 g, evidence of old and recent myocardial injury, and significant coronary artery disease were seen statistically more often in cardiac deaths than in controls (p < or = .005 in each case), and median age was significantly higher in cardiac deaths than in controls (p = .001). Based on a stepwise logistic regression model, significant coronary artery disease, old and recent myocardial injury, and heart weight >500 g were found to contribute significantly to the prediction of cardiac death. Finally, neither chest injury nor CPR significantly affected concentrations of cTnI in pericardial fluid. These data confirm that the presence of acute and remote myocardial injury, significant coronary artery disease, and cardiomegaly (heart weight >500 g) strongly supports the diagnosis of a cardiac-related death. In contrast to a recently published report, we do not find that elevated concentrations of cTnI in pericardial fluid are strong indicators of cardiac-related deaths using our methodology. 相似文献