全文获取类型
收费全文 | 15387篇 |
免费 | 414篇 |
专业分类
各国政治 | 739篇 |
工人农民 | 628篇 |
世界政治 | 1061篇 |
外交国际关系 | 615篇 |
法律 | 9604篇 |
中国政治 | 98篇 |
政治理论 | 2954篇 |
综合类 | 102篇 |
出版年
2020年 | 209篇 |
2019年 | 244篇 |
2018年 | 302篇 |
2017年 | 362篇 |
2016年 | 377篇 |
2015年 | 264篇 |
2014年 | 352篇 |
2013年 | 1630篇 |
2012年 | 374篇 |
2011年 | 382篇 |
2010年 | 359篇 |
2009年 | 332篇 |
2008年 | 407篇 |
2007年 | 453篇 |
2006年 | 444篇 |
2005年 | 389篇 |
2004年 | 367篇 |
2003年 | 401篇 |
2002年 | 340篇 |
2001年 | 586篇 |
2000年 | 541篇 |
1999年 | 441篇 |
1998年 | 202篇 |
1997年 | 161篇 |
1996年 | 155篇 |
1995年 | 150篇 |
1994年 | 166篇 |
1993年 | 140篇 |
1992年 | 257篇 |
1991年 | 300篇 |
1990年 | 286篇 |
1989年 | 302篇 |
1988年 | 285篇 |
1987年 | 314篇 |
1986年 | 285篇 |
1985年 | 287篇 |
1984年 | 244篇 |
1983年 | 258篇 |
1982年 | 169篇 |
1981年 | 175篇 |
1980年 | 136篇 |
1979年 | 209篇 |
1978年 | 154篇 |
1977年 | 137篇 |
1976年 | 110篇 |
1975年 | 128篇 |
1974年 | 139篇 |
1973年 | 132篇 |
1972年 | 95篇 |
1971年 | 103篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
911.
912.
913.
914.
915.
916.
917.
Contrary to a widespread belief about the undesirability of relatively large prisons, a review of the criminological literature yields no empirical evidence that prison size influences behavior inside or after leaving prison. The English prison statistics show that prison offenses, and more specifically assaults, are less likely in larger prisons. However, it was impossible in these analyses to control for the kinds of inmates in each prison. In a more controlled analysis of correctional effectiveness (defined as the difference between predicted and actual reconviction rates), there was a strong tendency for the more overcrowded prisons to be less effective. Size was only weakly related to effectiveness, and this association was reduced further after controlling for overcrowding. It was concluded that an important priority for governmental agencies should be to reduce overcrowding in prisons. 相似文献
918.
An investigation of the following psychoactive drugs: barbiturate, benzodiazepine, meprobamate, methaqualone and phenothiazine, was performed on all automobile occupants killed in accidents in southern Sweden during 1977 and 1978. Of 122 drivers and 55 passengers analysed, low concentrations of these drugs were found in nine drivers and in five passengers. Thus, 7.3% of the drivers were driving under the influence of drugs and, of these, two drivers (1.6% of all analysed drivers) were also inebriated. Twenty-three per cent of the drivers were inebriated only. According to the circumstances in the accidents and the number of drivers whose analyses proved positive, drug influence seldom seems to be the cause of fatal traffic accidents. 相似文献
919.
John H. Laub 《Journal of criminal justice》1983,11(2):129-142
Although the level of crime varies dramatically across the urban-rural dimension, little research has been directed at the issue of the patterns of offending across this dimension. Using National Crime Survey (NCS) victimization data, this paper examines to what extent the patterns of offending by particular age, race, and sex subgroups are similar in urban and rural areas. It was found that the patterns of age, race, and sex offending are essentially the same in both urban and rural areas. Particularly impressive is the consistency in the rankings (from high to low) of the propensity of offending in urban and rural areas when age, race, and sex were examined simultaneously. Also, these NCS data generally parallel Uniform Crime Reports arrest data with respect to the offender characteristics of age, race, and sex. This suggests that existing criminological theories can be applied to rural, as well as urban, crime patterns regarding the issue of offender characteristics. 相似文献
920.