全文获取类型
收费全文 | 4825篇 |
免费 | 160篇 |
专业分类
各国政治 | 234篇 |
工人农民 | 193篇 |
世界政治 | 344篇 |
外交国际关系 | 132篇 |
法律 | 3024篇 |
中国共产党 | 1篇 |
中国政治 | 30篇 |
政治理论 | 996篇 |
综合类 | 31篇 |
出版年
2020年 | 62篇 |
2019年 | 71篇 |
2018年 | 89篇 |
2017年 | 109篇 |
2016年 | 108篇 |
2015年 | 102篇 |
2014年 | 89篇 |
2013年 | 500篇 |
2012年 | 132篇 |
2011年 | 123篇 |
2010年 | 110篇 |
2009年 | 106篇 |
2008年 | 134篇 |
2007年 | 130篇 |
2006年 | 129篇 |
2005年 | 123篇 |
2004年 | 129篇 |
2003年 | 120篇 |
2002年 | 113篇 |
2001年 | 181篇 |
2000年 | 170篇 |
1999年 | 129篇 |
1998年 | 71篇 |
1997年 | 53篇 |
1996年 | 43篇 |
1995年 | 56篇 |
1994年 | 50篇 |
1993年 | 47篇 |
1992年 | 92篇 |
1991年 | 88篇 |
1990年 | 106篇 |
1989年 | 87篇 |
1988年 | 83篇 |
1987年 | 84篇 |
1986年 | 105篇 |
1985年 | 109篇 |
1984年 | 77篇 |
1983年 | 78篇 |
1982年 | 50篇 |
1981年 | 47篇 |
1980年 | 44篇 |
1979年 | 48篇 |
1978年 | 55篇 |
1976年 | 36篇 |
1975年 | 46篇 |
1974年 | 61篇 |
1973年 | 55篇 |
1972年 | 42篇 |
1970年 | 34篇 |
1969年 | 41篇 |
排序方式: 共有4985条查询结果,搜索用时 15 毫秒
991.
In this paper, we evaluate the efficiency of prosecutor office efficiency in the United States. Using multiple inputs and
multiple outputs to characterize prosecutor office production, technical and scale efficiency are calculated for U.S. counties.
Given the complex nature of service provision and potential heterogeneity based on judicial district size, we restrict our
sample to those counties with populations between 100 and 500 thousand. Given the efficiency results, we also test whether
efficiency is statistically related to median income and the percentage of minority population. The results suggest that prosecutor
offices in more socio-economically disadvantages counties are more inefficient.
相似文献
992.
Edwin Sutherland published his famous White Collar Crime in 1949 where he excoriated leaders of American firms for their war crimes. The names of all corporations were deleted, however,
from the book by the threat of legal action. The unabridged version was published in 1983 when the Sutherland files at Indiana
University were unsealed. These files can now be compared with both the 1949 and 1983 book, as well as with other evidence
of corporate war crimes during World War II. 相似文献
993.
Elizabeth F. Mason 《环境索赔杂志》2009,21(3):200-210
The U.S. Environmental Protection Agency (USEPA) has recently taken steps toward directly regulating the potential environmental, health, and safety risks associated with the manufacture and use of nanomaterials, and indications are that it is considering additional regulatory action. More particularly, the agency appears ready to start relying more on the exercise of its existing statutory authorities—including the Toxic Substances Control Act and the Federal Insecticide, Fungicide and Rodenticide Act—than on voluntary industry efforts to address these potential risks. As a result, companies that work with nanomaterials should pay close attention to USEPA's activities in this arena. 相似文献
994.
Amanda Brown Cross Denise C. Gottfredson Denise M. Wilson Melissa Rorie Nadine Connell 《犯罪学与公共政策》2009,8(2):391-412
Research Summary Unsupervised after‐school time for adolescents is a concern for parents and policymakers alike. Evidence linking unsupervised adolescent socializing to problem behavior outcomes heightens this concern among criminologists. Routine activities theory suggests that, when youth peer groups congregate away from adult authority, both opportunity for and motivation to engage in deviant acts increase. After‐school programs are a possible solution to unsupervised teen socializing during afternoon hours and are much in demand. However, empirical research has yet to test the relationship between the availability of after‐school programs and youth routine activities. This study presents evidence from a multisite, randomized, controlled trial of an after‐school program for middle‐school students in an urban school district. Policy Implications Youth in the treatment group engaged in less unsupervised socializing after school than youth in the control group but not as much less as would be expected if the after‐school program was providing consistent supervision to youth who would otherwise be unsupervised. Additional analyses examined why the influence of the after‐school program was not more pronounced. We found that, although program attendance was related to decreases in unsupervised socializing, the program did not attract many delinquency‐prone youths who were unsupervised, which suggests that the students most in need of the program did not benefit. Furthermore, data obtained from a mid‐year activity survey revealed that youth in the study were highly engaged in a variety of after‐school activities. The addition of the after‐school program into the mixture of available activities had little effect on the frequency with which students participated in organized activities after school. 相似文献
995.
P. Brito M. Carvalho A.M. Bento H. Afonso Costa A. Serra V. Lopes F. Balsa L. Andrade L. Batista C. Oliveira M.J. Anjos F. Corte-Real 《Forensic Science International: Genetics Supplement Series》2009,2(1):206-207
Biallelic markers, Single Nucleotide Polymorphisms (SNPs), are nowadays a powerful tool in the analysis of degraded samples. Namely, Y chromosome SNPs allow to determine the gender of the analyzed sample and to establish its haplogroup, making possible to attribute the ethnicity of male individuals. The aim of this study is to obtain Y-SNPs in forensic samples without STRs results, checking methodologies previously used. 相似文献
996.
997.
Perfect TJ Wagstaff GF Moore D Andrews B Cleveland V Newcombe S Brisbane KA Brown L 《Law and human behavior》2008,32(4):314-324
Five experiments tested the idea that instructing a witness to close their eyes during retrieval might increase retrieval success. In Experiment 1 participants watched a video, before a cued-recall test for which they were either instructed to close their eyes, or received no-instructions. Eye-closure led to an increase in correct cued-recall, with no increase in incorrect responses. Experiments 2-5 sought to test the generality of this effect over variations in study material (video or live interaction), test format (cued- or free-recall) and information modality (visual or auditory details recalled). Overall, eye-closure increased recall of both visual detail and auditory details, with no accompanying increase in recall of false details. Collectively, these data convincingly demonstrate the benefits of eye-closure as an aid to retrieval, and offer insight into why hypnosis, which usually involves eye-closure, may facilitate eyewitness recall. 相似文献
998.
John F. Wozniak 《Critical Criminology》2008,16(3):209-223
Mainstream criminology has traditionally focused on poverty as an isolated variable, whose effects are typically explored
by inserting a limited measure of this variable in a multivariate analysis. Peacemaking criminology, however, offers an alternative
perspective. In this paradigm, poverty is seen as a source of suffering and, to a degree, a “crime” in and of itself. Furthermore,
the suffering poverty engenders is an enveloping social experience that exposes its victims to concentrated disadvantage—or,
to use Jonathan Kozol’s (1991) term, to a range of “savage inequalities.” Thus, poverty is best understood not as an isolated
variable, but as a master status of fundamental social reality that subjects people to lives filled with suffering—suffering
that can engender criminal behavior. From a peacemaking perspective, a key avenue for preventing crime is, in the short run,
diminishing the suffering poverty causes and, in the long run, embracing social policies that reduce the prevalence of economic
suffering in contemporary society.
相似文献
John F. WozniakEmail: |
999.
The rapid economic growth in China over recent decades has been accompanied by higher levels of crime, but there have been
few studies of the Chinese experience of criminal victimization. A recent victimization survey of a representative sample
of households in Tianjin represents a major effort to fill this gap in the literature. The present paper reviews the research
based on the Tianjin survey along with other studies of crime and criminal victimization in China that have been published
since 1990. We summarize the major findings, discuss the theoretical perspectives and methodological strategies that have
been applied, identify the limitations of the research to date, and offer suggestions for future research.
相似文献
Yue Zhuo (Corresponding author)Email: |
Steven F. MessnerEmail: |
Lening ZhangEmail: |
1000.
Flack WF Caron ML Leinen SJ Breitenbach KG Barber AM Brown EN Gilbert CT Harchak TF Hendricks MM Rector CE Schatten HT Stein HC 《Journal of interpersonal violence》2008,23(9):1177-1196
The "red zone" usually refers to the first few weeks of the first semester at college, when female students are believed to be at greatest risk for experiencing unwanted sex. We tested this notion using data from a survey study of 207 first-and second-year students (121 women, 84 men) at a small, liberal arts university. Results demonstrated only one significant elevation in incidence rates of first- and second-year women's unwanted sexual experiences (sexual touching, attempted and completed anal, oral, and vaginal sex), between the end of the first month and fall break (mid-October) during the second year at school. Previous research and local information about the relevant behaviors of sorority and fraternity members is discussed in light of these findings to provide heuristic material for further empirical testing. Because risk may involve both temporal and situational factors, systematic collection and dissemination of local data are recommended. 相似文献