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   12954篇
  免费   166篇
各国政治   438篇
工人农民   1228篇
世界政治   515篇
外交国际关系   410篇
法律   7619篇
中国共产党   1篇
中国政治   28篇
政治理论   2850篇
综合类   31篇
  2020年   60篇
  2019年   69篇
  2018年   1352篇
  2017年   1302篇
  2016年   1112篇
  2015年   151篇
  2014年   98篇
  2013年   509篇
  2012年   313篇
  2011年   1021篇
  2010年   1100篇
  2009年   679篇
  2008年   864篇
  2007年   806篇
  2006年   129篇
  2005年   181篇
  2004年   295篇
  2003年   261篇
  2002年   140篇
  2001年   182篇
  2000年   176篇
  1999年   128篇
  1998年   83篇
  1997年   63篇
  1996年   62篇
  1995年   85篇
  1994年   75篇
  1993年   49篇
  1992年   92篇
  1991年   88篇
  1990年   106篇
  1989年   91篇
  1988年   85篇
  1987年   85篇
  1986年   105篇
  1985年   109篇
  1984年   85篇
  1983年   87篇
  1982年   55篇
  1981年   48篇
  1980年   44篇
  1979年   54篇
  1978年   66篇
  1977年   42篇
  1976年   36篇
  1975年   48篇
  1974年   63篇
  1973年   57篇
  1972年   42篇
  1969年   42篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
Results obtained from three commercial immunoassay kits, Abuscreen, TDx, and EMIT, commonly used for the initial test of urine cannabinoids (and metabolites) were correlated with the 11-nor-delta 9-tetrahydrocannabinol-9-carboxylic acid (9-THC-COOH) concentration as determined by GC/MS. Correlation coefficients obtained based on 26 (out of 1359 total sample population) highly relevant samples, are 0.601 and 0.438 for Abuscreen and TDx. Correlation coefficients obtained from a parallel study on a different set of 47 (out of 5070 total sample population) highly relevant specimens are 0.658 and 0.575 for Abuscreen and Emit. The immunoassay concentration levels, that correspond to the commonly used 15 ng/ml GC/MS cutoff value for 9-THC-COOH, as calculated from the regression equations are 82 ng/ml and 75 ng/ml for TDx and EMIT and 120 ng/ml and 72 ng/ml for Abuscreen manufactured at two different time periods. The difference of these calculated corresponding concentrations provides quantitative evidence of the reagent specificity differences.  相似文献   
952.
This article examines how changes in penal ideology may affect the experiences of white-collar offenders under community supervision. In-depth interviews with white-collar offenders on their experiences while under federal probation are used to examine how changes in criminal punishment have undermined the traditional reintegrative and rehabilitative goals of community supervision. The analysis suggests that shifts to a more managerial, actuarial model that seeks depersonalized efficiency has unintended consequences that delegitimatize the criminal justice system, and foster sentiments of degradation. Based on these findings, considerations for future research are discussed.  相似文献   
953.
Three questions relevant to insanity decisions were examined: (a) What informational cues are weighed most heavily in the attribution of criminal responsibility? (b) How do verdict forms influence these attributions? And (c) How do individuals' beliefs about insanity and responsibility influence decision making? Undergraduate subjects (n=181) responded to vignettes portraying an act by a mentally disordered defendant. Psychiatric jargon was avoided, so that attributions were not a function of diagnostic terminology. It was found that, under the traditional scheme of not guilty by reason of insanity (NGRI) vs. guilty, level of mental disorder (schizophrenia vs. personality disorder) was the primary determinant of insanity decisions. Also, insanity judgments were more likely to be made for acts performed without planful intentionality. Under the alternative scheme of NGRI vs. guilty but mentally ill (GBMI) vs. guilty, mental disorder still controlled NGRI verdicts; a bizarre act increased the likelihood of a GBMI over a guilty verdict; and the GBMI verdict option reduced markedly the proportion of psychotic defendants found NGRI and the proportion of personality disordered defendants found guilty. There were no significant differences between diagnostic groups in the likelihood of being found GBMI. Most subjects preferred to utilize the GBMI option as a compromise verdict even in the face of very severe mental illness. Attitudinal data revealed considerable variation in agreement with the classic moral logic of the insanity defense and accounted for a significant amount of the variance in insanity decisions. The implications for both social policy and future research are discussed.  相似文献   
954.
Abstract: To determine the prevalence and circumstances of psychoactive substances amongst nonoverdose completed suicide, 1436 consecutive cases autopsied at the NSW Department of Forensic Medicine over the period 1/1/1997–12/31/2006 were analyzed. Substances were detected in 67.2% of cases, and illicit drugs in 20.1%. Alcohol was present in 40.6% of cases. Males were more likely to be positive for alcohol, cannabis, and psychostimulants, and females for pharmaceuticals. Illicits were associated with younger age. Alcohol was most prominent amongst toxicity cases, as were opioids, psychostimulants amongst gunshot cases, and pharmaceuticals amongst drownings. Cases in which drug and alcohol histories were noted were more likely to have a substance detected. Alcohol was more common where a suicide note was left and where relationship problems were involved. Pharmaceuticals were more common where a previous attempt was noted. Licit and illicit substances are strongly associated with suicide, even when the method does not involve drug overdose.  相似文献   
955.
Police officers served as public health sentinels to collect data on children exposed to domestic violence across an entire municipality for 1 year. This study extended research by investigating a typology of domestic violence crimes and children’s direct sensory exposure to these types. Police officers used a standard, validated protocol to collect data on all substantiated domestic violence. Findings revealed that almost half of all events had children present, and 81% of these children were directly exposed to the violence. Children under the age of 6 years old were at greater risk of exposure. Identified domestic violence households with children were more likely to be low-income, non-White, and headed by a single female, compared to households at large. Cluster analysis revealed seven domestic violence event profiles. Typology showed that children were disproportionately exposed to the most unstable and dangerous profiles including weapon use, mutual assault, and substance abuse.  相似文献   
956.
957.
958.
Reginald Marsden argued that Sir Henry Marten, while judge of the High Court of Admiralty, had in 1633 entertained the first action for civil salvage ‘in the modern sense’. But Marsden could find little evidence among the formal Admiralty decrees of the seventeenth century that sea-coasters or mariners had regularly used this new plea in the central court to seek rewards for saving ships and cargoes. A sampling of the court's Act Books, however, reveals that Admiralty judges may well have ruled in more than 200 salvage cases from the time of Sir Henry's innovation until the end of the century. In some of these cases, moreover, Sir Richard Lloyd, a late-Stuart judge, abandoned the ancient custom of rewarding salvors with half of what was saved and developed instead the modern and equitable practice of adjusting awards according to what salvors had done and risked in rescuing the property of others.  相似文献   
959.
960.
This note underscores the need for more precise causal theories linking the international division of labor, national economies, and public policies. To that end, the author recommends two literatures upon which a revised dependency theory might build, namely, those on economic geography and the political economy of redistribution.  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