全文获取类型
收费全文 | 7361篇 |
免费 | 208篇 |
专业分类
各国政治 | 246篇 |
工人农民 | 245篇 |
世界政治 | 492篇 |
外交国际关系 | 241篇 |
法律 | 4989篇 |
中国政治 | 49篇 |
政治理论 | 1270篇 |
综合类 | 37篇 |
出版年
2020年 | 97篇 |
2019年 | 118篇 |
2018年 | 139篇 |
2017年 | 171篇 |
2016年 | 167篇 |
2015年 | 115篇 |
2014年 | 169篇 |
2013年 | 668篇 |
2012年 | 185篇 |
2011年 | 201篇 |
2010年 | 164篇 |
2009年 | 167篇 |
2008年 | 194篇 |
2007年 | 225篇 |
2006年 | 233篇 |
2005年 | 182篇 |
2004年 | 191篇 |
2003年 | 202篇 |
2002年 | 166篇 |
2001年 | 318篇 |
2000年 | 296篇 |
1999年 | 222篇 |
1998年 | 86篇 |
1997年 | 71篇 |
1996年 | 76篇 |
1995年 | 68篇 |
1994年 | 77篇 |
1993年 | 62篇 |
1992年 | 143篇 |
1991年 | 155篇 |
1990年 | 137篇 |
1989年 | 155篇 |
1988年 | 135篇 |
1987年 | 149篇 |
1986年 | 134篇 |
1985年 | 153篇 |
1984年 | 118篇 |
1983年 | 140篇 |
1982年 | 93篇 |
1981年 | 95篇 |
1980年 | 70篇 |
1979年 | 99篇 |
1978年 | 74篇 |
1977年 | 66篇 |
1976年 | 57篇 |
1975年 | 46篇 |
1974年 | 57篇 |
1973年 | 59篇 |
1971年 | 50篇 |
1970年 | 46篇 |
排序方式: 共有7569条查询结果,搜索用时 15 毫秒
891.
Frank P. Williams Marilyn D. McShane Carl P. Wagoner 《American Journal of Criminal Justice》1995,19(2):215-238
Several articles have been written about the relative prestige of journals in criminology and criminal justice. Almost uniformly,
however, those rankings have focused on sociology and criminology journals and have generally reflected a sociological orientation.
If criminal justice is indeed a separate discipline, such approaches are tantamount to asking psychologists to rate sociological
journals within a list of psychology journals. Our approach is first to separate respondents by their degree of identification
with criminal justice and their educational orientation. Second, we compile a list of responses to questions about prestige
and utility to practitioners across the range of criminal justice and criminology journals. Analyses of these data indicate
that there are differences in the way scholars rate journals, based on their identity with criminal justice and their educational
orientation. These differences, however, are found in specific journals and in types of journals (i.e., police, corrections,
criminal justice) rather than in aggregate perceptions of all criminal justice and criminology journals. 相似文献
892.
893.
894.
895.
Sexing North American Eskimo and Indian innominate bones with the acetabulum/pubis index 总被引:1,自引:0,他引:1
The acetabulum/pubis index was tested on American Eskimo and Indian samples of innominate bones to which sex had been assigned by visual inspection. The index alone sexed 91 and 89% of the Eskimo and Indian samples, respectively. Subsequent sorting of misclassified specimens with femur head diameter resulted in 96 and 99% rates of classification. The index and a measurement of ischial height were used in a discriminant function model which correctly identified the sex of 93% of the Eskimo and 92% of the Indian bones. Using femur head diameter to sort those specimens which were misclassified by their discriminant function score yielded classification rates of 96 and 98%. These results are compared to a range of 92 to 100% obtained with the index in earlier studies of American black and white pelvic bone samples. 相似文献
896.
897.
He is co-author of The American Presidency,and editor of The Politics of Interests.He has written extensively on term limits and rotation in office and related topics and commentaries. 相似文献
898.
J P Newhouse 《Journal of health politics, policy and law》1988,13(2):263-278
This paper updates tests of the validity of three models of medical price inflation: a standard model, in which changes in demand press against inelastic supply; a dynamic version of the standard model, in which high levels of insurance induce high rates of product innovation and development; and a model of increasing inefficiency, in which consumers have weak incentives to search out efficient suppliers. Earlier statistical support for the third model has weakened, which provides some evidence that the regulatory and competitive initiatives of the last decade are having their intended effects. But time series measures of medical prices upon which the statistical evidence relies have important methodological problems, so other types of evidence are useful. Trends in expenditure in other countries and in HMOs suggest that the most important explanation of medical price inflation is the dynamic version of the standard model, although the other models have some validity as well. 相似文献
899.
The cost and value of second surgical opinion programs: a critical review of the literature 总被引:1,自引:0,他引:1
Second surgical opinion programs (SSOPs) have been used since 1972 by both public and private insurers to improve the patient's information and decision processes and to reduce operative risks and costs attributable to questionable and perhaps unnecessary operations. This article reviews the literature on SSOPs. It considers whether SSOPs are effective mechanisms for reducing health care costs, how SSOPs affect outcomes, how physician errors affect the value of SSOPs, and what nonconfirmation rates and rates of surgery indicate about the appropriateness of operations. Although the literature varies in quality, all the studies fall short in one or more of the following dimensions: an appropriate control group, a comprehensive definition of cost and outcomes, and sufficient duration and scale to measure changes and use of medical services in a general population. Thus, the value of SSOPs remains an open question. 相似文献
900.
Presented is a case of murder by means of chloroquine, committed on a 36-year-old male. The wife of the deceased had confessed to have secretely administered chloroquine-containing tablets to her husband. She was lawfully sentenced to life-imprisonment. The toxicological findings of this case are compared to the results of two chloroquine suicide cases and discussed in the context of the referring literature. An additional case where chloroquine intoxication was doubtful is introduced because of the unusual circumstances under which it occurred. 相似文献