首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   518篇
  免费   39篇
各国政治   38篇
工人农民   59篇
世界政治   51篇
外交国际关系   56篇
法律   257篇
中国政治   9篇
政治理论   83篇
综合类   4篇
  2023年   11篇
  2022年   3篇
  2021年   8篇
  2020年   28篇
  2019年   19篇
  2018年   35篇
  2017年   44篇
  2016年   39篇
  2015年   29篇
  2014年   24篇
  2013年   68篇
  2012年   23篇
  2011年   14篇
  2010年   16篇
  2009年   18篇
  2008年   15篇
  2007年   25篇
  2006年   29篇
  2005年   17篇
  2004年   14篇
  2003年   9篇
  2002年   18篇
  2001年   4篇
  2000年   4篇
  1999年   1篇
  1998年   6篇
  1997年   2篇
  1996年   1篇
  1995年   1篇
  1994年   2篇
  1993年   1篇
  1992年   1篇
  1991年   2篇
  1990年   1篇
  1988年   3篇
  1986年   2篇
  1985年   5篇
  1984年   3篇
  1983年   5篇
  1982年   3篇
  1978年   2篇
  1977年   1篇
  1975年   1篇
排序方式: 共有557条查询结果,搜索用时 15 毫秒
51.
52.
Haplotype frequencies for 11 Y-STR markers (DYS19, DYS389I, DYS389II, DYS390, DYS391, DYS392, DYS393, DYS385, DYS437, DYS438 and DYS439) in a Romani population (n=63) from Slovakia, Jats of Haryana (n=84) and Jat Sikhs (n=80) from India were determined. The Slovakian Romani, the Haryana and Sikh populations were endogamous based on their unique haplotype ratio and haplotype diversity values, although the Sikh population appeared to be more diverse. AMOVA revealed non-significant differences between the Romanies and significant differences with non-Romani populations. The Macedonian Romani population differed from all Romani populations examined. Frequent haplotypes observed in Romani populations were sporadic in northwest Indian populations. Thirteen out of 316 populations worldwide were found to share the six most frequent haplotypes of the Slovakian Romanies when the screening conditions were narrowed based on the population size to be over 40, the occurrence of the haplotypes was more than one and the sum frequencies of the most frequent haplotypes was at least 0.02. The most common haplotypes were also observed in other Romani groups. When searching with two Indian (Malbar and Malaysian Indian) most frequent haplotypes under the same conditions matches could be detected in all Romani populations except for the Macedonian Romanies. The search with the Jat Sikhs and Jats of Haryana most frequent haplotypes resulted no matches in Romani populations.  相似文献   
53.
Intimate partner violence (IPV) is a crime that is present in all countries, seriously impacts victims, and demands a great deal of time and resources from the criminal justice system. The current study examined the use of the Spousal Assault Risk Assessment Guide, 2nd ed. (SARA; Kropp, Hart, Webster, & Eaves, 1995), a structured professional judgment risk assessment and management tool for IPV, by police officers in Sweden over a follow-up of 18 months. SARA risk assessments had significant predictive validity with respect to risk management recommendations made by police, as well as with recidivism as indexed by subsequent contacts with police. Risk management mediated the association between risk assessment and recidivism: High levels of intervention were associated with decreased recidivism in high risk cases, but with increased recidivism in low risk cases. The findings support the potential utility of police-based risk assessment and management of IPV, and in particular the belief that appropriately structured risk assessment and management decisions can prevent violence.  相似文献   
54.
The aim of this cross-sectional study was to test the accuracy of Cameriere's European formula for age assessment in a large sample of Mexican children. The accuracy of dental age estimation was defined as how closely real age, measured as the difference between chronological age (CA) and dental age (DA), could be predicted. Digitalized orthopantomographs of 502 Mexican children (254 girls and 248 boys), aged between 5 and 15 years, were analyzed. The seven left permanent mandibular teeth were evaluated using Cameriere's method. Intra- and inter-observer variability for this technique was tested on a small random sample. Dental age was estimated for each individual and compared with known chronological age. Accuracy was measured as the difference between known chronological age and dental age and tested for significance with the mean prediction error (ME). The standard deviation and 95% confidence interval of the mean difference were also calculated. ME was 0.63 years for girls and 0.52 years for boys. ME was found to be slightly overestimated by 0.10 years for girls, but was correctly estimated for boys with an accuracy of 0.00. In conclusion, this method is very useful and may be recommended for practical application both in clinical dentistry and forensic procedures on the Mexican population.  相似文献   
55.
Over the last few years, the emergence of universities’ third mission has significantly affected objectives, sources of funding and financing methods, as well as the management, of universities. Although the university–industry relationships have been widely investigated, several interesting theoretical and empirical issues still remain open in the literature. In this paper we construct an original data set, combining financial information with structural and organizational data on Italian University departments, with a twofold aim. First, to describe the importance and the extent of third-party funding in the Italian system of research as well as the pattern of evolution over the last few years. Second, to investigate the factors that influence both the probability and the intensity of the commitment of departments in third-party activities by building a multi-level framework combining factors at individual, departmental, university and territorial levels. The results obtained suggest a number of policy implications for universities and policy makers. On one hand, universities should explicitly recognize the role of dedicated internal organizations and provide training for professional staff capable of acting as value-added intermediaries. On the other hand, if policy makers wish to improve the relationships between universities and external actors, disciplinary differences across departments as well as regional inequalities in growth levels should be carefully considered, giving up a one-size-fits-all approach.  相似文献   
56.
The research in representative bureaucracy that examines the extent to which racial congruence impacts bureaucrats’ decisions is mixed. This study adds to this literature by examining the impact of representative bureaucracy on the level of force that police officers use and whether they make an arrest in use of force encounters, while taking into consideration key situational conditions. Using individual-level data from New Orleans to estimate this impact, the authors find that racial congruence and incongruence impact policing outcomes even in the presence of situational shortcuts that cue decision-making. The findings show that the benefits of representation are conditional on the outcome. Black officers are less likely to use higher levels of force on Black civilians. Yet both Black and White officers are less likely to arrest White civilians in use of force encounters. This suggests that interactions in which bureaucrats have less discretion (e.g., arrests) may offer limited opportunities for active representation.  相似文献   
57.
58.
59.
60.
ABSTRACT

Eight years after the Arab Spring revolutions, Tunisia's state and citizens are crafting an increasingly resilient national social contract, despite setbacks. This case study examines what is driving Tunisia's efforts, focusing in particular on key transition initiatives – including a national dialogue and a forward-looking constitution adopted by broad consensus, following nation-wide consultations. The case examines how informed and empowered Tunisians built these structures to leverage the inherent resilience capacities of the people, which developed throughout state and civil society formation, women's movements, labour movements, and civic education. The research suggests that two issues that gave rise to the revolution have remained particular challenges for efforts to mediate and address conflict: political and social polarisation and lack of livelihoods. It reveals how Tunisians are calling for more inclusion and institutionalised citizen engagement as a means to address them. Conclusions point to how post-revolution, democratisation gains as well as values of compromise, tolerance, dialogue appear to be immunising Tunisia against irreparable reversals and are laying the foundations for sustainable democratic peace.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号