全文获取类型
收费全文 | 846篇 |
免费 | 30篇 |
专业分类
各国政治 | 37篇 |
工人农民 | 84篇 |
世界政治 | 58篇 |
外交国际关系 | 49篇 |
法律 | 398篇 |
中国政治 | 7篇 |
政治理论 | 226篇 |
综合类 | 17篇 |
出版年
2021年 | 7篇 |
2020年 | 13篇 |
2019年 | 16篇 |
2018年 | 25篇 |
2017年 | 34篇 |
2016年 | 32篇 |
2015年 | 21篇 |
2014年 | 37篇 |
2013年 | 139篇 |
2012年 | 22篇 |
2011年 | 35篇 |
2010年 | 18篇 |
2009年 | 17篇 |
2008年 | 23篇 |
2007年 | 36篇 |
2006年 | 28篇 |
2005年 | 23篇 |
2004年 | 28篇 |
2003年 | 25篇 |
2002年 | 13篇 |
2001年 | 11篇 |
2000年 | 20篇 |
1999年 | 11篇 |
1998年 | 9篇 |
1997年 | 14篇 |
1996年 | 9篇 |
1995年 | 9篇 |
1994年 | 9篇 |
1993年 | 9篇 |
1992年 | 6篇 |
1991年 | 11篇 |
1990年 | 10篇 |
1989年 | 12篇 |
1988年 | 10篇 |
1987年 | 6篇 |
1986年 | 6篇 |
1985年 | 10篇 |
1984年 | 11篇 |
1983年 | 10篇 |
1982年 | 10篇 |
1981年 | 12篇 |
1980年 | 11篇 |
1979年 | 9篇 |
1978年 | 5篇 |
1977年 | 7篇 |
1976年 | 6篇 |
1975年 | 3篇 |
1973年 | 4篇 |
1972年 | 3篇 |
1971年 | 3篇 |
排序方式: 共有876条查询结果,搜索用时 15 毫秒
631.
Survey research is a common tool for assessing public opinions, perceptions, attitudes, and behaviors for analyses in many social science disciplines. Yet there is little knowledge regarding how specific elements of survey research methodology are applied in practice in public administration. This article examines five mainstream public administration journals over an eight‐year period regarding current methodological practice, organized around the total survey error framework. The findings show that survey research in the field of public administration features mainly small‐scale studies, heavy reliance on a single data collection mode, questionable sample selection procedures, and suspect sample frame quality. Survey data largely are analyzed without careful consideration of assumptions or potential sources of error. An informed evaluation of the quality of survey data is made more difficult by the fact that many journal articles do not detail data collection procedures. This study concludes with suggestions for improving the quality and reporting of survey research in the field. 相似文献
632.
The “shale gas revolution” raises a host of questions for policy makers and researchers on both sides of the Atlantic. We provide a brief overview of the regulatory environment as it relates to hydraulic fracturing for natural gas in the United States and the European Union. We then pose a set of open questions, which we believe should shape policy and research agendas surrounding shale gas wherever the development of this resource is being pursued or considered. 相似文献
633.
Karen Heimer Kecia R. Johnson Joseph B. Lang Andres F. Rengifo Don Stemen 《Journal of Quantitative Criminology》2012,28(2):219-244
Female imprisonment rates have increased proportionately more than male imprisonment rates over recent decades. There are
substantial race differences in women’s rates, as is the case for men. Yet, there has been little quantitative research on
the correlates of women’s imprisonment using data over time, or on potential race differences in those correlates. The present
research analyzes data on black and nonblack female imprisonment rates in the 50 states for the period 1981–2003. The analyses
are guided substantively by existing research on race, social threat and criminal punishment, and theory and research on the
penal-welfare hypothesis. The study uses bivariate-response multilevel modeling to simultaneously examine the factors associated
with black and nonblack women’s imprisonment rates. The results show that black female imprisonment rates increase when the
concentration of African Americans in metropolitan areas and poverty rates grow, whereas nonblack female imprisonment rates
are unaffected by poverty rates and actually decrease when African American populations become more concentrated in metro
areas. Both black and nonblack women’s imprisonment rates increase when welfare spending declines. The results are consistent
with social threat perspectives and the penal-welfare hypotheses. 相似文献
634.
Matthew Manning Christopher L. Ambrey Christopher M. Fleming Shane D. Johnson 《Journal of Quantitative Criminology》2018,34(4):971-998
Objectives
This paper investigates the impact of Field Court Attendance Notices (FCANs) on rates of property crime in New South Wales (NSW), Australia. FCANs are used for relatively minor offenses, are issued ‘on the spot’, and provide an alternative to the time consuming process of arresting an alleged offender and taking them to the police station for processing. Despite their use in NSW for over 20 years, this study is the first to evaluate their impact on crime.Methods
We use data provided by the NSW Bureau of Crime Statistics and Research, and the Australian Bureau of Statistics. We specify a general dynamic panel data model estimated via the Arellano and Bond (Rev Econ Stud 58:277–297, 1991) estimator, specifically the first-differenced twostep generalised method of moments (GMM) estimator.Results
For property crime as a whole, in both the short- and long-run, we find no significant relationship between the use of FCANS and levels of offending. However, when offending rates are disaggregated into 11 sub-categories, we find that in the short-run an increase in the use of FCANs leads to statistically significant decreases in the rate of crime for five of the sub-categories offenses considered (break and enter dwelling; motor vehicle theft; steal from motor vehicle; steal from retail store and; steal from dwelling). The long-run results are largely consistent with the short-run results in terms of their signs and statistical significance, suggesting that the effects persist.Conclusions
The empirical analysis presented in this paper suggests that the use of FCANs is an effective and potentially efficient policing strategy for a subset of property offenses, in that offenders can be processed at lower cost and long-run rates of certain crimes reduced.635.
A Molecular Method to Detect Wound Cells in Bloodstains Resultant of Sharp Force Injuries for Crime Scene Reconstruction 下载免费PDF全文
Donald J. Johnson M.S. David E. Raymond Ph.D. Cynthia Chen M.S. Matthew Quon M.S. Julian Lis M.S. Mo Re Choi M.S. Christopher Lopez M.S. Aileen Han Ray D. de Leon Ph.D. Cynthia Bir Ph.D. 《Journal of forensic sciences》2018,63(3):842-848
Previous research by the authors on an animal model showed that bloodstains can contain additional information about their somatic origin in the form of wound cells. Bloodstains produced by a gunshot wound to the head were distinguished from bloodstains produced by a gunshot wound to the chest by testing the stains for a brain microRNA marker. In this study, the effectiveness of the technique was examined on blood drops shed externally from a stab wound to the liver of rat carcasses. Specifically, investigations were conducted on the liver microRNA marker, rno‐mir‐122‐3p, with the QIAGEN miScript System, and PCR analysis. Between the two stabbing methods used, 67% of the scalpel blades and 57% of the blood drops tested positive for rno‐mir‐122‐3p; however, other samples tested negative giving inconclusive results as to the wound‐of‐origin. The amount of the liver cells in the bloodstains appeared to be related to the extent of trauma. 相似文献
636.
Lee O. Morgan A.A.S. Marty Johnson B.S. Jered Cornelison Ph.D. Carolyn Isaac Ph.D. Joyce deJong D.O. Joseph A. Prahlow M.D. 《Journal of forensic sciences》2019,64(2):602-606
Postmortem fingerprint collection is a routine part of many forensic death investigations. Although the production of postmortem prints is usually straight forward, several obstacles and scenarios can make the collection difficult. A common challenge occurs when finger pads are mummified. Several current techniques allow for softening and rehydration of mummified finger pads; however, despite the employment of such techniques, the production of adequate postmortem fingerprints can remain elusive. The authors present two techniques that can improve the chances of obtaining suitable fingerprints from mummified remains. The “baby powder method” involves applying a cornstarch‐based powder, such as baby powder, onto the darkened and mummified finger pads, to allow better visualization of the fingerprint detail. The “transillumination method” involves carefully dissecting away the tissues underlying the finger pad, followed by placement of a bright light source underneath the finger pad, such that the finger ridge pattern is illuminated. 相似文献
637.
Andrew O. Ballard Ryan DeTamble Spencer Dorsey Michael Heseltine Marcus Johnson 《Legislative Studies Quarterly》2023,48(1):105-144
Affective polarization is pervasive in modern US politics, and can be intensified by strategic messaging from members of Congress. But there are gaps in our knowledge of the dynamics of polarizing appeals from elected representatives on social media. We explore the usage of polarizing rhetoric by members of Congress on Twitter using the 4.9 million tweets sent by members of Congress from 2009 to 2020, coded for the presence of polarizing rhetoric via a novel and highly accurate application of supervised machine learning methods. Fitting with our expectations, we find that more ideologically extreme members, those from safer districts, and those who are not in the president’s party are more likely to send polarizing tweets, and that polarizing tweets garner more engagement, increasing campaign funding for more polarizing members. 相似文献
638.
639.
Lurigio AJ Cho YI Swartz JA Johnson TP Graf I Pickup L 《International journal of offender therapy and comparative criminology》2003,47(6):630-652
This study examined the prevalence of alcohol- and substance-related disorders in a random sample of 627 adult probationers in Illinois. The investigation also explored the prevalence of major psychiatric disorders and their co-occurrences with alcohol and substance use disorders. To detect the presence of psychiatric disorders, researchers employed standardized assessment tools based on Diagnostic and Statistical Manual of Mental Disorders criteria. Overall, results showed that probationers had significantly higher rates of psychiatric disorders, substance use disorders, and co-occurring disorders compared with persons in the general population. In light of these findings, probation administrators are urged to invest more resources in treating drug use, mental illness, and codisorders, the latter of which is associated with a higher risk of violent behaviors. 相似文献
640.
Shane D. Johnson Wim Bernasco Kate J. Bowers Henk Elffers Jerry Ratcliffe George Rengert Michael Townsley 《Journal of Quantitative Criminology》2007,23(3):201-219
Using epidemiological techniques for testing disease contagion, it has recently been found that in the wake of a residential
burglary, the risk to nearby homes is temporarily elevated. This paper demonstrates the ubiquity of this phenomenon by analyzing
space–time patterns of burglary in 10 areas, located in five different countries. While the precise patterns vary, for all
areas, houses within 200 m of a burgled home were at an elevated risk of burglary for a period of at least two weeks. For
three of the five countries, differences in these patterns may partly be explained by simple differences in target density.
The findings inform theories of crime concentration and offender targeting strategies, and have implications for crime forecasting
and crime reduction more generally.
相似文献
Shane D. JohnsonEmail: |