全文获取类型
收费全文 | 11243篇 |
免费 | 347篇 |
专业分类
各国政治 | 599篇 |
工人农民 | 293篇 |
世界政治 | 885篇 |
外交国际关系 | 497篇 |
法律 | 6325篇 |
中国共产党 | 1篇 |
中国政治 | 37篇 |
政治理论 | 2823篇 |
综合类 | 130篇 |
出版年
2020年 | 108篇 |
2019年 | 135篇 |
2018年 | 215篇 |
2017年 | 236篇 |
2016年 | 288篇 |
2015年 | 195篇 |
2014年 | 204篇 |
2013年 | 1379篇 |
2012年 | 310篇 |
2011年 | 289篇 |
2010年 | 259篇 |
2009年 | 280篇 |
2008年 | 304篇 |
2007年 | 298篇 |
2006年 | 307篇 |
2005年 | 261篇 |
2004年 | 261篇 |
2003年 | 265篇 |
2002年 | 271篇 |
2001年 | 370篇 |
2000年 | 362篇 |
1999年 | 290篇 |
1998年 | 177篇 |
1997年 | 177篇 |
1996年 | 118篇 |
1995年 | 147篇 |
1994年 | 153篇 |
1993年 | 142篇 |
1992年 | 221篇 |
1991年 | 228篇 |
1990年 | 206篇 |
1989年 | 235篇 |
1988年 | 207篇 |
1987年 | 213篇 |
1986年 | 222篇 |
1985年 | 200篇 |
1984年 | 183篇 |
1983年 | 177篇 |
1982年 | 128篇 |
1981年 | 127篇 |
1980年 | 94篇 |
1979年 | 153篇 |
1978年 | 100篇 |
1977年 | 94篇 |
1976年 | 82篇 |
1975年 | 88篇 |
1974年 | 103篇 |
1973年 | 99篇 |
1972年 | 83篇 |
1971年 | 68篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
941.
Many law enforcement agencies are currently responding to the problem of online crime by establishing proactive investigative units that track criminals on the Internet. Not only do these specialized teams face problems in the area of emerging technology, they are also faced with handling emerging legal issues. The current research examined the issue of the entrapment defense, and how previously established physical realm doctrine could be applied to the investigation of online crimes such as child pornography. Relying on previous case law it would appear that entrapment claims related to online sting operations involve consideration of: a) did the law enforcement officer continuously contact the suspect with the intention of trying to convince the individual to engage in a particular type of behavior, b) how long was the relationship between the undercover officer and the suspect, and c) how much, if any, reluctance to commit the criminal act did the suspect provide evidence of? 相似文献
942.
Bite mark analysis involves comparison of individual dental characteristics between a dentition and the bite injury. A bite mark injury may result from sexual assault, or physical assault, and defensive injuries, and as such can be used to link a suspect to a victim or vice versa. Missing teeth are one of the characteristics that could implicate or exclude a suspected biter. However frequency data for use by forensic odontologists can only be collated from epidemiological studies. Therefore an audit was undertaken of missing anterior teeth in adult patients (n = 1010) attending for treatment, gathering data that could be more relevant to odontology. One in five of the sample presented with missing teeth that were either replaced with a denture (11%), not replaced (6%) or missing with the gap closed (2%). 相似文献
943.
M D Bell L G Tate R K Wright 《The American journal of forensic medicine and pathology》1991,12(1):77-79
We present an accidental autoerotic asphyxiation of a 24-year-old man. Further investigation revealed that 18 years earlier, his brother, then 13, had been found dead, hanging in the family bathroom. Although that death had been ruled a suicide, reevaluation of the death scene indicates that this was also an autoerotic asphyxiation. This is the first reported case of sexual asphyxia involving siblings. 相似文献
944.
The potential applications of a personal computer with integrated database software in toxicologic analysis are discussed. A toxicologic database including 370 basic compounds, is presented that was built up without knowledge of a higher programming language and was used as a base for drug identification in normal analysis by PC, DC and GC. 相似文献
945.
946.
Daniel E. Hall Lois Ventura Eric G. Lambert 《American Journal of Criminal Justice》2007,32(1-2):116-128
Criminal justice professionals are a potential source of students for many criminal justice programs, especially those in metropolitan areas. This study explored factors that influenced the higher education decisions of 480 Northwestern Ohio criminal justice employees (e.g., municipal police officers, sheriff deputies, jail staff, and prison staff). Most indicated a desire to pursue higher education. Among those indicating an interest in earning a degree, cost and convenience were the most significant factors in their choice. The availability of evening and weekend classes, availability of a part-time curriculum, availability of financial aid/tuition reimbursement, total credit hours required for the degree, the field experience of faculty, and flexibility in admission requirements were all significant factors. Location was also very significant. Most respondents indicated that they would not travel more than thirty minutes to attend classes. 相似文献
947.
N,N-diethyl-m-toluamide (DEET) levels in postmortem specimens of stomach and contents, blood, liver, and urine are reported following ingestion of the compound. DEET was analyzed by gas chromatography with an OV-101 column and a nitrogen phosphorus detector. The presence of the compound in the four postmortem specimens was confirmed by mass spectrometry. 相似文献
948.
949.
Robert Wolfe 《Diplomacy & Statecraft》1998,9(2):23-54
What explains the persistence and proliferation of the resident ambassador? Why is the role apparently important both to the conduct of international affairs and to the work of governments? I do not try to propose a new theory of ambassadors, but I do offer conclusions about the nature of living in a globalized society of states where the economic logic of markets and the political logic of communities are at cross-purposes. It is a world in which we depend on institutions to help us maintain order and stability. Ambassadors are one of those institutions. At one level they are the concrete day by day reproduction of the society of states. At another level they act on behalf of the members of their community, helping that community to maintain its strength and cohesion by doing what needs to be done, abroad. An increase in the intensity of interactions among states, therefore, seems to lead to an increase in diplomatic representation facilitated rather than impeded by the new technologies of transportation and communications. Ambassadors are still lying abroad, it seems, because changes in technology have brought 'abroad' much closer to home while the myriad effects of globalization have made much more of abroad relevant to people and their governments. Far from being in decline, the resident ambassador seems likely to continue flourishing. 相似文献
950.