全文获取类型
收费全文 | 13367篇 |
免费 | 383篇 |
专业分类
各国政治 | 561篇 |
工人农民 | 438篇 |
世界政治 | 984篇 |
外交国际关系 | 445篇 |
法律 | 8476篇 |
中国政治 | 81篇 |
政治理论 | 2664篇 |
综合类 | 101篇 |
出版年
2020年 | 158篇 |
2019年 | 200篇 |
2018年 | 265篇 |
2017年 | 286篇 |
2016年 | 291篇 |
2015年 | 205篇 |
2014年 | 256篇 |
2013年 | 1326篇 |
2012年 | 300篇 |
2011年 | 334篇 |
2010年 | 297篇 |
2009年 | 298篇 |
2008年 | 331篇 |
2007年 | 360篇 |
2006年 | 387篇 |
2005年 | 318篇 |
2004年 | 312篇 |
2003年 | 337篇 |
2002年 | 306篇 |
2001年 | 501篇 |
2000年 | 441篇 |
1999年 | 364篇 |
1998年 | 177篇 |
1997年 | 153篇 |
1996年 | 138篇 |
1995年 | 139篇 |
1994年 | 145篇 |
1993年 | 142篇 |
1992年 | 246篇 |
1991年 | 289篇 |
1990年 | 259篇 |
1989年 | 283篇 |
1988年 | 256篇 |
1987年 | 293篇 |
1986年 | 267篇 |
1985年 | 291篇 |
1984年 | 245篇 |
1983年 | 270篇 |
1982年 | 189篇 |
1981年 | 179篇 |
1980年 | 150篇 |
1979年 | 178篇 |
1978年 | 146篇 |
1977年 | 120篇 |
1976年 | 117篇 |
1975年 | 106篇 |
1974年 | 121篇 |
1973年 | 120篇 |
1972年 | 93篇 |
1971年 | 89篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
C J Kim B H Kwak S D Kim S P Kim 《The American journal of forensic medicine and pathology》1992,13(3):211-213
A 22-year-old Korean soldier, who had received blows to the neck and epigastrium from an officer 10 h earlier, suddenly died after massive hematemesis. He had been in relatively good health except for episodes of blood-tinged vomiting approximately 5 and 7 months prior to this event. Postmortem examination revealed angiodysplasia involving the gastroesophageal junction, and the stomach was distended with blood. No abnormal findings were present around the whole viscera, and the duodenum was free of blood. The pathologic significance of upper gastrointestinal angiodysplasia as a potential source of bleeding and a chronologic correlation between the trauma and bleeding are discussed. 相似文献
62.
This methodological paper presents the utility of survival analysis methods to provide age adjustment in the analysis of domestic violence data. These methods improve the estimation of lifetime probability of domestic violence, improve identification of patterns of first victimization over the lifespan, and provide methods of testing risk factors for first victimization while adjusting for the respondents' age. Most importantly, these methods allow a new investigation of recall bias. Results suggest that lifetime probability of abuse may have been substantially underestimated in previous studies because of problems in recall/disclosure encountered by middle-aged women. 相似文献
63.
64.
Incarceration rates in the United States dramatically increased over the past several decades. This trend has drawn significant academic attention to prison overcrowding and its potential effect on inmate misconduct. The empirical relationship between inmate misconduct and overcrowding, however, is less than clear. To be sure, studies indicating positive, negative, and null relationships can all be found in the literature. The current research subjects this body of literature to a meta-analysis in an effort to: (1) clarify the direction and strength of the relationship between overcrowding and rates of prison misconduct across all studies, and (2) to uncover the degree to which variation in research outcomes can be attributed to methodological differences across studies. Results indicate that prison crowding has little substantive impact on inmate misconduct. Implications of the findings are discussed in detail. 相似文献
65.
66.
Book Reviews in This Article:
Getting Rid of Patients: Contradictions in the Socialization of Physicians . By Terry Mizrahi
Physicians and Social Change . By John Colombotos and Corinne Kirchner
Changing Values in Medicine . Edited by Eric J. Cassell and Mark Siegler
Professional Ethics and Primary Care Medicine: Beyond Dilemmas and Decorum . By Harmon L. Smith and Larry R. Churchill
Physician—Patient Decision-Making: A Study in Medical Ethics . By Douglas N. Walton
With Dignity: The Search for Medicare and Medicaid . By Sheri I. David
The Dismissal of Students with Mental Disorders. Legal Issues, Policy Considerations, and Alternative Responses .
Courtroom Toxicology . By Marshall Houts, Randall C. Baselt, and Robert H. Cravey 相似文献
Getting Rid of Patients: Contradictions in the Socialization of Physicians . By Terry Mizrahi
Physicians and Social Change . By John Colombotos and Corinne Kirchner
Changing Values in Medicine . Edited by Eric J. Cassell and Mark Siegler
Professional Ethics and Primary Care Medicine: Beyond Dilemmas and Decorum . By Harmon L. Smith and Larry R. Churchill
Physician—Patient Decision-Making: A Study in Medical Ethics . By Douglas N. Walton
With Dignity: The Search for Medicare and Medicaid . By Sheri I. David
The Dismissal of Students with Mental Disorders. Legal Issues, Policy Considerations, and Alternative Responses .
Courtroom Toxicology . By Marshall Houts, Randall C. Baselt, and Robert H. Cravey 相似文献
67.
68.
Charles B. Fleming Richard F. Catalano Monica L. Oxford Tracy W. Harachi 《Journal of Quantitative Criminology》2002,18(4):423-439
The social development model (SDM) is a theory of behavior that has proven useful in explaining the etiology of delinquency, violence, and substance use among adolescents as well as early antisocial behavior among pre-adolescents. A further test of the model is its generalizability across population groups. A section of the SDM representing prosocial influences in the etiology of problem behavior was compared for boys and girls and for children from low- and non low-income families using three waves of child, parent and teacher survey data on a sample of 851 elementary school students. Multiple group structural equation modeling was used to assess differences across groups in both measurement of model constructs and hypothesized structural paths between constructs. The results indicate overall similarity in the reliability of measurement models and validity of structural models. 相似文献
69.
70.