全文获取类型
收费全文 | 12123篇 |
免费 | 384篇 |
专业分类
各国政治 | 789篇 |
工人农民 | 350篇 |
世界政治 | 1119篇 |
外交国际关系 | 582篇 |
法律 | 6190篇 |
中国政治 | 70篇 |
政治理论 | 3279篇 |
综合类 | 128篇 |
出版年
2020年 | 145篇 |
2019年 | 191篇 |
2018年 | 271篇 |
2017年 | 277篇 |
2016年 | 290篇 |
2015年 | 205篇 |
2014年 | 246篇 |
2013年 | 1611篇 |
2012年 | 277篇 |
2011年 | 306篇 |
2010年 | 274篇 |
2009年 | 280篇 |
2008年 | 329篇 |
2007年 | 388篇 |
2006年 | 353篇 |
2005年 | 322篇 |
2004年 | 326篇 |
2003年 | 337篇 |
2002年 | 316篇 |
2001年 | 318篇 |
2000年 | 289篇 |
1999年 | 240篇 |
1998年 | 216篇 |
1997年 | 182篇 |
1996年 | 168篇 |
1995年 | 154篇 |
1994年 | 146篇 |
1993年 | 164篇 |
1992年 | 185篇 |
1991年 | 236篇 |
1990年 | 202篇 |
1989年 | 204篇 |
1988年 | 202篇 |
1987年 | 231篇 |
1986年 | 212篇 |
1985年 | 196篇 |
1984年 | 202篇 |
1983年 | 201篇 |
1982年 | 162篇 |
1981年 | 141篇 |
1980年 | 130篇 |
1979年 | 132篇 |
1978年 | 116篇 |
1977年 | 104篇 |
1976年 | 91篇 |
1975年 | 84篇 |
1974年 | 93篇 |
1973年 | 99篇 |
1972年 | 78篇 |
1969年 | 68篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
W. Bruggeman 《European Journal on Criminal Policy and Research》2001,9(3):283-290
Almost all European countries are member countries of Interpol, the World Customs Organisation and the United Nations. Some of them are Benelux and Schengen countries, and 15 are EU Member States. With this in mind, Europe can be considered, in policing terms, as being made up of a series of concentric and overlapping circles. The map shows overlapping institutional sources, territorial remits, functional specialisations and strategic emphasis. This article focuses on recent developments in European police co-operation, as well as judicial co-operation. International law enforcement co-operation is more and more influenced by basic political developments. Based on a rather complex, and sometimes confusing patchwork of institutions, there is a growing influence of intergovernmental based new developments. In particular prevention and combating organised crime are the main reasons for new and more professional ways of improved horizontal co-operation. 相似文献
942.
家兔死后眼玻璃体液锌、镍含量与 PMI关系的研究 总被引:6,自引:3,他引:3
目的寻找一种精确推定PMI的方法。方法应用电感耦合等离子体质谱(ICP-MS),检测了家兔死后96小时内眼玻璃体液锌、镍元素含量,探讨其与PMI的相关性。结果家兔死后24h内眼玻璃体液锌、镍元素含量与PMI显著相关,可作为推定早期PMI的参考指标,其二项式回归方程分别为y=0.1404x2-1.3351x+3.8298(R2=0.9202)、y=0.0043x2-0.0596x+0.2665(R2=0.9103)。结论家兔眼玻璃体液中Zn、Ni元素含量变化是推定早期PMI的参考指标之一。 相似文献
943.
944.
This article examines the mass public's perceptions of the factors that actually influence Supreme Court decisions as well those that ought to influence such decisions. We expect significant discrepancies between what the public believes ought to be the case and what it perceives to actually be the case with regard to Supreme Court decision making and that these discrepancies have a significant negative impact on the public's assessment of the Court. More specifically, we hypothesize that the public believes that political factors have more influence on the Court than ought to be the case and that the public perceives traditional legal factors to be less influential than they should be. We find that the expected discrepancies do exist and significantly detract from popular regard for the Court. 相似文献
945.
946.
A Linear Poisson Autoregressive Model: The Poisson AR(p) Model 总被引:1,自引:0,他引:1
Time series of event counts are common in political scienceand other social science applications. Presently, there arefew satisfactory methods for identifying the dynamics in suchdata and accounting for the dynamic processes in event countsregression. We address this issue by building on earlier workfor persistent event counts in the Poisson exponentially weightedmoving-average model (PEWMA) of Brandt et al. (American Journalof Political Science 44(4):823843, 2000). We developan alternative model for stationary mean reverting data, thePoisson autoregressive model of order p, or PAR(p) model. Issuesof identification and model selection are also considered. Wethen evaluate the properties of this model and present bothMonte Carlo evidence and applications to illustrate. 相似文献
947.
John W. Stickels 《Journal of Police and Criminal Psychology》1999,14(2):48-59
A community policing program consisting of citizen input and problem solving techniques often results in a decision to police
places and translates into lower crime rates at the policed locations. Proponents of community policing programs believe that
they build social capital, which invests neighborhood citizens in the crime reduction efforts and reduces the simultaneous
occurrence of potential offenders and victims required for crimes to be committed. 相似文献
948.
William U. Weiss Ph.D. Gerald Serafino Ph.D. Ann Serafino Walt Willson Jason Sarsany John Felton Ph.D. 《Journal of Police and Criminal Psychology》1999,14(1):38-42
The MMPI-2 and the Inwald Personality Inventory were employed to investigate the personality characteristics of dropouts from
a state police academy. A traditional model of training borrowed from military models was used at the academy rather than
a police generated model. Sensitive and independent individuals, more compatible with modern community policing methods may
have rejected police work as a result of the experience. 15 academy completers and 9 dropouts were used in the sample. Analyses
of the scales of the MMPI-2 and the Inwald Personality Inventory identified variables upon which the two groups differed.
The hypothesis that more sensitive, empathic and independent individuals were leaving the academy appeared to be supported. 相似文献
949.
John T. Scott 《The Journal of Technology Transfer》1999,24(1):37-54
The paper explains why the productivity of information technology (IT) in the service sector of the U.S. economy is increased by the provision of infratechnology. The size and growth of the service sector and its investment in IT are discussed, and a key fact and a key inference are developed. The fact: The absorption costs of IT are the vast majority of the IT investment costs to the service sector. The inference: Infratechnology investments are an efficient way to increase both private and social benefits of incurring the cost of implementing IT. 相似文献
950.