全文获取类型
收费全文 | 713篇 |
免费 | 22篇 |
专业分类
各国政治 | 37篇 |
工人农民 | 146篇 |
世界政治 | 34篇 |
外交国际关系 | 40篇 |
法律 | 339篇 |
中国政治 | 13篇 |
政治理论 | 123篇 |
综合类 | 3篇 |
出版年
2023年 | 2篇 |
2021年 | 4篇 |
2020年 | 7篇 |
2019年 | 17篇 |
2018年 | 26篇 |
2017年 | 28篇 |
2016年 | 14篇 |
2015年 | 16篇 |
2014年 | 20篇 |
2013年 | 112篇 |
2012年 | 17篇 |
2011年 | 19篇 |
2010年 | 18篇 |
2009年 | 27篇 |
2008年 | 23篇 |
2007年 | 22篇 |
2006年 | 25篇 |
2005年 | 16篇 |
2004年 | 25篇 |
2003年 | 18篇 |
2002年 | 25篇 |
2001年 | 14篇 |
2000年 | 16篇 |
1999年 | 14篇 |
1998年 | 10篇 |
1997年 | 14篇 |
1996年 | 15篇 |
1995年 | 11篇 |
1994年 | 4篇 |
1993年 | 7篇 |
1992年 | 14篇 |
1991年 | 14篇 |
1990年 | 9篇 |
1989年 | 13篇 |
1988年 | 8篇 |
1987年 | 7篇 |
1986年 | 8篇 |
1985年 | 9篇 |
1984年 | 9篇 |
1983年 | 7篇 |
1982年 | 11篇 |
1981年 | 6篇 |
1980年 | 10篇 |
1979年 | 4篇 |
1978年 | 5篇 |
1977年 | 5篇 |
1976年 | 2篇 |
1973年 | 2篇 |
1970年 | 1篇 |
1969年 | 2篇 |
排序方式: 共有735条查询结果,搜索用时 15 毫秒
121.
There is limited research on the gendered impacts of drug policies in Canada, despite the fact that women, Indigenous women in particular, are the country’s fastest growing prisoner population, with many incarcerated for drug-related crimes. This article highlights the results of a larger qualitative study with former prisoners in Ontario and community and medical experts from across the country. Focusing on the women research participants, we consider the lack of adequate and culturally-relevant substance use and harm reduction programming in federal prisons, and suggest a reformulation of Canada’s punitive drug policies toward a health and social welfare approach. 相似文献
122.
Lee Ann Slocum 《Journal of Quantitative Criminology》2018,34(2):535-589
Objectives
This study explores the association between past-year face-to-face contact with the police and subsequent victimization reporting. It also examines whether this relationship depends on the type of encounter (citizen-initiated contacts, routine vehicle stops, invasive encounters associated with being a suspect), its perceived justness, or victim characteristics. Among victims who did not notify the police, the reasons behind this decision are assessed to understand the mechanisms through which police encounters are related to reporting.Methods
This research is the first to use longitudinal data that link the 2002, 2008, and 2011 Police Public Contact Surveys to the 2002–2014 National Crime Victimization Surveys. Multivariate logistic regression is used to examine the effect of prior contact on police notification among victims of personal (N = 1073) and household (N = 11,433) crimes.Results
Prior contact with the police has no main effect on the reporting of personal crimes; however, the negative effects of police-initiated and unjust contact are amplified for the poor and African Americans. The reporting of household crimes varies based on prior police experiences and whether they were viewed as just. Personal crime victims with invasive contact are more likely than other contact groups to attribute non-reporting to fear of reprisal.Conclusions
Using national data tells a complex story about how race/ethnicity, poverty, and recent experiences with the police interact to shape victims’ behavior. The intricacies of these findings suggest that efforts to increase reporting may need to be multifaceted and address victims’ concerns about safety and justness.123.
Mary Ann Campbell Carmen Gill Dale Ballucci 《Journal of Police and Criminal Psychology》2018,33(2):175-187
Substantial research has demonstrated the value of using risk assessment tools for the prediction and management of violence risk, including for intimate partner violence (IPV) (Mills, Kroner, and Morgan 2011). Such tools have been advocated for use by police officers (Hilton, Grant, and Rice 2010), but little is known about police officers’ perceptions of using these tools to inform their decision-making. Using a sample of 159 Canadian police officers (73% male, M age =?41.8 years, SD?=?8.9), the current study examined police officer’s experiences with IPV risk tools, their attitudes about using such tools, and identified predictors of these attitudes using an online survey. Most of this sample had previously used an IPV risk tool, which was most commonly the Brief Spousal Assault Form for the Evaluation of Risk (64.1%). Most police officers rated use of risk tools as at least somewhat to extremely helpful (73.5%), and 67.4% indicated that they would use a risk tool with sufficient training on it. Regression analyses indicated that police officers’ perceived IPV risk tool usefulness was significantly predicted by older respondent age and greater perceived need for guidance in responding to IPV calls. In conclusion, most police officers view IPV risk screening as valuable for informing their responses to such calls for service and are likely to embrace such decision-aids with sufficient training on their potential impact for enhancing safety. 相似文献
124.
Joshua L. Bush Ann L. Coker Candace J. Brancato Emily R. Clear Eileen A. Recktenwald 《Journal of school violence》2018,17(2):152-163
Costs of providing the Green Dot bystander-based intervention, shown to be effective in the reduction of sexual violence among Kentucky high school students, were estimated based on data from a large cluster-randomized clinical trial. Rape Crisis Center Educators were trained to provide Green Dot curriculum to students. Implementing Green Dot in schools (N = 13) randomized to the intervention, over five years, cost $1.6 M and included start-up ($58 K) and ongoing implementation ($1.55 M). Costs for adding a school ($25,510) were calculated based on the final year, where no start-up costs were incurred. Knowing the $25,510 cost estimate for adding Green Dot may be particularly useful for high school administrators or school boards when they were making economic decisions based on strong evidence of program effectiveness to reduce violence. 相似文献
125.
Objectives
Sex and age trends in bone mineral density (BMD) play an important role in the estimation of age-at-death (AAD) of unidentified human remains. Current methodologies lack the ability to precisely estimate age in older individuals. In this study, BMD of the cranium and femur measured by DXA were examined to establish their applicability for age estimation in older adults. BMD as measured by DXA, is most commonly used clinically for prediction of osteoporotic fracture risk. We hypothesized that weight-bearing and non-weight-bearing bones, the femur and cranium, respectively, would provide valuable insights for aging.Methods
The sample consists of 32 sets of excised cranial fragments from the Regional Forensic Center, Johnson City, Tennessee and 41 associated crania and femora from the North Carolina Office of the Chief Medical Examiner. All crania and femora were scanned using a Hologic (R) DXA scanner and data were analyzed using Student t-tests, Loess regression, and ANOVA.Results
Student t-tests indicate a significant relationship between the sexes and cranial BMD and a significant relationship between age cohorts and femoral neck BMD. The Loess regression showed different aging patterns in the cranium for females and males older than 55. And the ANOVA showed changes in femoral neck after age 55.Conclusions
These results indicate age and sex dependent changes in BMD especially for individuals over the age of 55, which offers improvement from current aging methods for older individuals. Further research using a larger sample size could improve the predictive capabilities of the model. 相似文献126.
127.
Michelle Ann McManus Matthew L. Long Laurence Alison Louise Almond 《Journal of Sexual Aggression》2013,19(3):368-384
AbstractThis study explored a sample of 244 UK adult male offenders convicted of offences involving indecent images of children (IIOC): 120 had a previous contact child sexual offence (defined as dual offenders) and 124 had no evidence of an offence against a child (defined as non-contact offenders). Offender groups were compared regarding their socio-demographic characteristics, previous convictions and IIOC possession. Key discriminatory factors that differentiated dual offenders were: access to children, previous offence history, sexual grooming and possession of IIOC that depicts similar-aged victims. In contrast, non-contact offenders could be identified from their greater amount and wider range of IIOC possession. The results suggest a homology between Internet behaviours, IIOC possession and victim selection. Implications for law enforcement agencies are discussed in terms of assisting investigative prioritisation by identifying those most at risk of committing sexual abuse against children. 相似文献
128.
129.
Ann B. Schnare 《Housing Policy Debate》2013,23(2):289-318
Abstract The paper examines the preservation needs of public housing from the perspective of its physical condition and its ongoing repair and replacement needs. It begins by examining the range of needs that exist today, including the level of expenditures that would be required to put the stock in working order to meet existing codes, and to ensure the long‐term viability of the development. It then explores the level of expenditures that would be required on an ongoing basis to keep the stock in good repair and to meet future capital and preventive maintenance needs. The final section addresses several important policy issues, including overall funding requirements, the cost‐effectiveness of preservation efforts compared with vouchers and new construction, the special problems of troubled public housing authorities, and the need to establish stronger incentives for capital planning. 相似文献
130.
An increasing number of studies in political communication focus on the “sentiment” or “tone” of news content, political speeches, or advertisements. This growing interest in measuring sentiment coincides with a dramatic increase in the volume of digitized information. Computer automation has a great deal of potential in this new media environment. The objective here is to outline and validate a new automated measurement instrument for sentiment analysis in political texts. Our instrument uses a dictionary-based approach consisting of a simple word count of the frequency of keywords in a text from a predefined dictionary. The design of the freely available Lexicoder Sentiment Dictionary (LSD) is discussed in detail here. The dictionary is tested against a body of human-coded news content, and the resulting codes are also compared to results from nine existing content-analytic dictionaries. Analyses suggest that the LSD produces results that are more systematically related to human coding than are results based on the other available dictionaries. The LSD is thus a useful starting point for a revived discussion about dictionary construction and validation in sentiment analysis for political communication. 相似文献