全文获取类型
收费全文 | 12140篇 |
免费 | 369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 | 6192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
1.
John P. Crank 《Crime, Law and Social Change》2003,39(1):39-67
This concept paper presents a theory of environmental scarcity developed byHomer-Dixon. Homer-Dixon developed a model to describe the consequences of scarcity for sub-national violence in third world countries. This paper hasfour interrelated purposes. First, it presents the model of scarcity developedby Thomas Homer-Dixon in 1999. Second, it assesses the way in which the scarcity model contextualizes criminal justice and criminology research, andby extension, how research in crime and justice processes can broaden the scarcity model. Third, it applies elements of the model to the United States,a goal that represents a generalization of the model from third-world to first-world settings. Fourth, it presents a particular case, the migrationof African-Americans from the rural South to urban centers in the 1950s and1960s and consequent inner-city violence in the 1960s, that displays manyelements of the environmental scarcity model. 相似文献
2.
The Central Bank of Bahrain came into existence on 7 Septemberand has taken over all the tasks previously conducted by theBahrain Monetary Agency (BMA). The Central Bankof Bahrain and Financial Institutions Law (CBB Law)issued by Decree No. 64 of 2006 gives the CBB strong operationalindependence and a wider range of enforcement powers. The CBBLaw has also replaced the Insurance Law (Legislative DecreeNo. 17 相似文献
3.
4.
This paper investigates whether an Okun-type relationship between output and unemployment is taking hold in formerly planned economies as they move towards the market. Using a first-differences variant of Okun's Law, we test for its presence in 25 transition countries divided into groups of ``reform leaders'' and ``reform laggards.'' For leaders, represented by the 10 European Union (EU) accession countries, Okun's Law is detected in both 1991–94 and 1995–2000 periods. For laggards, represented by the remaining group, it is present only for the later period and only when countries affected by wars are removed from the sample. A comparison of unemployment–output elasticities and unemployment levels in EU candidates and EU members themselves indicates that their labor markets might be converging. 相似文献
5.
6.
The conventional wisdom in criminology is that adult onset of offending is a rare event. Closer examination of the extant literature that use official records, however, reveals that an average of 50 percent of adult offenders initiate offending at age eighteen or older. Although criminological research has investigated late onset offending in adolescence, there is little research on adult onset offending and the correlates of adult offending. Using police contact and interview data from the 1942 and 1949 birth cohort data from Racine, WI, this study investigated the correlates of crime for adult onset and persistent offenders. The results show that employment is the only correlate to affect the probability of adult offending differently for previously delinquent and nondelinquent offenders. This article concludes by highlighting the neglect of research on adult offenders, specifically the large percentage of adult onset offenders, and calling for more research on this topic. 相似文献
7.
Restriction fragment length polymorphism (RFLP) analysis for the purpose of individualization is now being used in casework in the People's Republic of China. This report describes the use of the multilocus minisatellite probe 33.15 to solve three cases, including two homicides and a rape. In the third case, fetal tissue was analyzed to prove that the alleged rapist was, in fact, the father. In each case, analysis of deoxyribonucleic acid (DNA) resulted in a positive match. The probability of chance association of the DNA fingerprint was calculated as 5.6 x 10(-12), which is similar to the figures reported in the literature. 相似文献
8.
The individuality of fibres used to provide forensic evidence--not all blue polyesters are the same.
Fibres used in forensic casework suffer from a disadvantage common to other forms of trace evidence--it is not possible to state with absolute certainty that they originate from a specific source. Target fibre studies, population studies and research on 'blocks of colour' have effectively demonstrated the polymorphism of textile fibres (particularly man-made ones) and have shown that when a fibre is believed to have a specific putative source, the chance that it has originated from a different source purely by coincidence is extremely remote. A study by Houck MM (Houck MM, Inter-comparison of unrelated fibre evidence. Forensic Science International 2003; 135: 146-149) has shown that no coincidental matching fibres were recovered from items of clothing examined in 20 unrelated crimes. The study involved over two million comparisons. This work goes a step further, and using the example of blue polyester fibres shows that even within a very narrow segment of the whole general fibre population, many examples of a specific colour/type of man-made fibre taken from random sources can be compared and the chance of any two being the same is very low. These studies should help to show the specificity and value of transferred fibres in providing forensic evidence. 相似文献
9.
10.