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   14284篇
  免费   497篇
各国政治   982篇
工人农民   536篇
世界政治   1282篇
外交国际关系   776篇
法律   7508篇
中国共产党   2篇
中国政治   185篇
政治理论   3367篇
综合类   143篇
  2023年   73篇
  2021年   71篇
  2020年   207篇
  2019年   244篇
  2018年   384篇
  2017年   412篇
  2016年   465篇
  2015年   325篇
  2014年   347篇
  2013年   1951篇
  2012年   405篇
  2011年   481篇
  2010年   370篇
  2009年   389篇
  2008年   442篇
  2007年   458篇
  2006年   425篇
  2005年   382篇
  2004年   401篇
  2003年   392篇
  2002年   325篇
  2001年   454篇
  2000年   423篇
  1999年   393篇
  1998年   228篇
  1997年   188篇
  1996年   182篇
  1995年   157篇
  1994年   176篇
  1993年   175篇
  1992年   222篇
  1991年   215篇
  1990年   202篇
  1989年   188篇
  1988年   216篇
  1987年   197篇
  1986年   208篇
  1985年   180篇
  1984年   184篇
  1983年   185篇
  1982年   119篇
  1981年   96篇
  1980年   98篇
  1979年   116篇
  1978年   99篇
  1977年   84篇
  1976年   82篇
  1975年   70篇
  1974年   81篇
  1969年   61篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
912.
The aim of this study was to determine whether the Self-Appraisal Questionnaire (SAQ), a tool that was found to be reliable and valid for assessing violent and nonviolent recidivism and institutional adjustment for Canadian offenders, would also be valid for the same purposes with a demographically different population of North Carolina offenders. The internal consistency alphas and SAQ total and subscale scores' correlations were high. Offenders with high SAQ total scores had significantly more violent offenses, had more total number of past offenses, had higher numbers of past arrests, and had more institutional infractions than those with low SAQ scores. There were no significant differences between the responses of the African American and Caucasian offenders on the SAQ scales. These results support previous findings regarding the reliability and validity of the SAQ for assessing recidivism and institutional adjustment and suggest that the SAQ could be used with diverse populations.  相似文献   
913.
Wisconsin officials during the 1990s seemed poised to enact innovative and comprehensive health care reform. During that era, an ambitious, popular, and reform-minded governor led the state. The state had an unusually professional legislature. The state's economy was strong. Even with these advantages, however, the report card on the state's efforts is mixed. The state enacted a fairly modest set of reforms that were financed largely by the federal government and subject to extensive federal oversight. The Wisconsin story thus seems to be about the politics of incrementalism. But while critics of incrementalist politics point out that the number of uninsured continues to grow, the catalytic federalism witnessed in Wisconsin in the 1990s may well be the best model for implementing health care reform.  相似文献   
914.
A total of 137 urine samples and 46 serum samples, corresponding to 154 self-confessed designer drugs consumers in Ibiza island, were analyzed for the presence of designer drugs: amphetamine and amphetamine derivatives (methamphetamine, methylenedioxymethamphetamine (MDMA), methylenedioxyethylamphetamine (MDEA), methylenedioxyamphetamine (MDA), p-methoxymethylamphetamine (PMMA), p-methoxyamphetamine (PMA), etc.), ketamine and gamma-hydroxybutyric acid. Among this population, coming both from the forensic clinic and from the emergency room of a hospital, a total of 99 cases were found positive for some designer drug. This study shows the prevalence of methylenedioxymethamphetamine (MDMA) among designer drug users, sole or in association with other drugs. Also, the mixture of MDMA with other designer drugs, ethanol and/or cocaine is shown to be more likely to produce toxic symptoms requiring clinical attendance in a hospital emergency room. These findings along with the consumption history, the concentrations of drugs and metabolites in urine and serum and the toxicological significance for the interpretation of some MDMA metabolites such as 4-hydroxy-3-methoxymethamphetamine (HMMA) are discussed in this study.  相似文献   
915.
Value of fetal autopsy after medical termination of pregnancy   总被引:2,自引:0,他引:2  
We carried out a retrospective study of 352 medical terminations of pregnancy (MTP) carried out in a large French administrative region over two consecutive years. We analysed the indications for MTP and then compared the prenatal ultrasound diagnosis with fetal autopsy findings in order to demonstrate the value of pathological examination of the fetus in prenatal diagnosis and genetic counselling as well as the need to check by autopsy the quality of ultrasound screening. Preliminary analysis of the indication for these MTP showed that in 69.9% ultrasound screening had been carried out, revealing mainly brain abnormalities (22.2%) and heart defects generally associated with chromosomal abnormalities (32.1%). Prenatal findings were in agreement with autopsy results, showing no false-positive prenatal diagnoses. However, in 7.9% of cases in which brain abnormalities were detected, confirmation was not possible at autopsy because of tissue autolysis, showing the need for optimal conditions of expulsion. In 35.8% of cases, confirmation of the diagnosis by autopsy was not useful for management but still added to medical knowledge and demonstrated to the mother the reality of the defects. In 50.9%, the autopsy findings were decisive for genetic counselling.  相似文献   
916.
This study examines the process of identity negotiation for Israeli female ex-convicts who were separated for extensive periods of time from their children and eventually lost custody over them. The content analysis of in-depth interviews reveals that these women were able to reconstruct their biographies and retrospectively account for their crimes and drug addiction in terms of the sexual, physical, and economic abuse they had endured and by appeal to higher loyalties, their children who they had to provide for. However, when having to account for their fallings as mothers, all biographical reconstruction, external blame, and accusation collapsed. Looking at themselves through their children's eyes, female offenders were simply unable to renegotiate the imputed identity of incompetent mother. They could neither confront their children's anger nor explain to them why they had abandoned them. Permanently alienated from the center of motherhood, these women were doomed to an existential chaos.  相似文献   
917.
This paper responds to criticisms/misconstruals of our measure of the maximum probative value of evidence (D. Davis & W. C. Follette, 2002), and our conclusions regarding the potentially prejudicial role of intuitive profiling evidence, including motive. We argue that R. D. Friedman and R. C. Park's (2003) criticisms and example cases are largely based on inappropriate violation of the presumption of innocence. Further, we address the merits of our absolute difference measure of probative value versus those of the Bayesian likelihood ratio championed by D. H. Kaye and J. J. Koehler (2003). We recommend methods for presentation of measures of evidence utility that convey complexities of interdependence between new and existing evidence. Finally, we propose a probable cause standard for admission of potentially prejudicial evidence, dictating that admissibility of such evidence should be contingent upon other substantial evidence of guilt.  相似文献   
918.
919.
920.
In a strict and conservative society like Malaysia, the number of cases of infanticide has continued to occur. The authors present two typical cases of infanticide in Malaysia. Case 1 concerned a body of a fully mature newborn fetus disposed in a rubbish bin. The head was traumatically amputated by the rubbish truck's compactor. The umbilical cord was still attached to the body, with no reddening around the insertion. The severed neck showed features consistent with post-mortem amputation. The significant finding was expanded crepitant lungs, which floated in water. The histology of the lungs showed expanded alveoli. It was concluded that the baby had been born alive, but no cause of death could be elicited. Case 2 concerned a decomposed mature newborn found in a scrub forest. The internal organs showed advanced putrefaction, the lungs being collapsed, congested, and hemorrhagic, typical of decomposed lungs. No conclusion could be made about the state of birth or the cause of death because of the putrefied state of the body. The two cases illustrate the typical cases and problems faced by pathologists locally and probably elsewhere in the world. Most of the bodies are found in a putrefied state. Pathologists have to ascertain not only maturity and live birth but also the cause of death, which may be very subtle or masked by putrefaction. The problems of diagnosis of live birth are discussed.  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