全文获取类型
收费全文 | 1076篇 |
免费 | 56篇 |
专业分类
各国政治 | 52篇 |
工人农民 | 42篇 |
世界政治 | 175篇 |
外交国际关系 | 101篇 |
法律 | 478篇 |
中国政治 | 7篇 |
政治理论 | 272篇 |
综合类 | 5篇 |
出版年
2023年 | 4篇 |
2021年 | 6篇 |
2020年 | 11篇 |
2019年 | 21篇 |
2018年 | 40篇 |
2017年 | 46篇 |
2016年 | 44篇 |
2015年 | 28篇 |
2014年 | 25篇 |
2013年 | 162篇 |
2012年 | 46篇 |
2011年 | 44篇 |
2010年 | 31篇 |
2009年 | 31篇 |
2008年 | 48篇 |
2007年 | 59篇 |
2006年 | 40篇 |
2005年 | 52篇 |
2004年 | 46篇 |
2003年 | 46篇 |
2002年 | 42篇 |
2001年 | 18篇 |
2000年 | 17篇 |
1999年 | 24篇 |
1998年 | 11篇 |
1997年 | 9篇 |
1996年 | 10篇 |
1995年 | 11篇 |
1994年 | 20篇 |
1993年 | 13篇 |
1992年 | 8篇 |
1991年 | 15篇 |
1990年 | 9篇 |
1989年 | 7篇 |
1988年 | 9篇 |
1987年 | 4篇 |
1986年 | 6篇 |
1985年 | 7篇 |
1984年 | 4篇 |
1983年 | 7篇 |
1982年 | 4篇 |
1981年 | 8篇 |
1980年 | 7篇 |
1979年 | 4篇 |
1977年 | 8篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1968年 | 2篇 |
1966年 | 2篇 |
排序方式: 共有1132条查询结果,搜索用时 15 毫秒
141.
Jeffrey S. Slovak 《Journal of criminal justice》1983,11(4):301-315
Many police patrol officers in Newark, New Jersey, articulate a working image of violence in the city that is similar to Louis Wirth's classical model of the effects of urban social disorganization on deviant behavior. In Newark, however, the working theory posits the 1967 civil disorders as a cataclysmic disorganizing event that generated ominously unique patterns of violence in the post-disorder years, compared to earlier times. Using data on violent crimes reported to the Newark police between 1940 and 1980, this article attempts to test the adequacy of that working theory as an explanation of reality. Regression techniques similar to those used by Friesma (1979) to assess natural disaster impacts are applied to three transformations of these crime data. The analysis demonstrates that the police working version of the disorganization model is more accurate as an inference from the pattern of violence that characterizes their workload than it is one from the patterns of absolute incidence of violent crime or of the risk of violent victimization incurred by residents of Newark. The article closes with a discussion of the implications of these findings for the larger problem of police-citizen distance. 相似文献
142.
143.
144.
145.
Voting rights litigation requires ecological inference to estimatethe voting preferences of minority and nonminority groups withinthe electorate. Double regression has been the procedure mostcommonly employed for this purpose. This article presents thefirst formal examination of this procedure. The underlying structuralmodel reveals that double regression estimators are neitherunbiased nor consistent estimators of true within-group votepreferences or polarization. Simulations demonstrate that theycan substantially exaggerate the differences between minorityand nonminority vote choices when none are present, and dramaticallyunderstate them when differences exist. In sum, double regressioncannot meet conventional statistical standards for reliability.Consequently, it should be abandoned. 相似文献
146.
147.
The existing literature seriously misinterprets the available evidence on the predictability of high rate criminal offending
and thus the potential value of statistical treatment rules that impose stiffer punishments on offenders with higher predicted
risk of recidivism. The misinterpretation results from the failure to take account of the fact that the data used in existing
risk assessment exercises come from environments characterized by informal (and sometimes formal) attempts by judges and other
actors to base penal treatments on expected recidivism. Findings of little or no predictive power for baseline covariates
may simply indicate the efficient use of the available information. We lay out the problem in detail, provide examples from
several literatures and then consider general solutions to the problem.
相似文献
Jeffrey SmithEmail: |
148.
Purpose
Using a time-series cross-sectional design, we estimated the effects of social disorganization on juvenile property crime rates in a predominately Latino, Texas-Mexico border region.Methods
Eighteen years of data from seven independent sources (Bureau of Economic Analysis, Bureau of Labor Statistics, Census Bureau, Texas State Demographer, Internal Revenue Service, Department of Agriculture Economic Research Service, and Uniform Crime Reports) were examined. Counties were utilized as the unit of analysis, and time-series cross-sectional regression models were estimated.Results
The analysis showed that per capita income was negatively related to juvenile crime in both rural and urban counties. Ethnic heterogeneity was positively related to the outcome in rural, but not urban, counties; while percent foreign-born was negatively related to juvenile crime in urban, but not rural, counties.Conclusions
The Latino experience, both native- and foreign-born, is important for improving our understanding how economic and social conditions relate to crime. Comparative analyses between distinct geographical environments, such as rural and urban counties, can yield insight how the local context interacts with social disorganization processes. 相似文献149.
We propose a genetic test for full sibship for a pair of carrion flies that could reveal the postmortem relocation of a corpse. A carrion fly larva is sometimes left behind when a corpse is moved. The discovery of full sibling larvae of approximately the same developmental stage at two locations would strongly suggest that a corpse was moved between those two sites. Distributions of pairwise comparisons of relatedness (R) coefficients were generated using amplified fragment length polymorphism profiles for nine samples of laboratory-generated full siblings as well as for a reference sample of nonfull sibling Phormia regina (Diptera: Calliphoridae). The mean relative R coefficient, a pairwise measure of the proportion of shared alleles, was 0.479 (±0.289 SD) for full siblings, close to the theoretical expectation of 0.5. A likelihood ratio (LR) test was based on observed distributions of R. R >0.55 corresponded to an LR >1000 favoring full sibship for that pair of individuals. 相似文献
150.