全文获取类型
收费全文 | 13033篇 |
免费 | 308篇 |
专业分类
各国政治 | 523篇 |
工人农民 | 440篇 |
世界政治 | 867篇 |
外交国际关系 | 355篇 |
法律 | 8464篇 |
中国政治 | 81篇 |
政治理论 | 2504篇 |
综合类 | 107篇 |
出版年
2020年 | 131篇 |
2019年 | 180篇 |
2018年 | 217篇 |
2017年 | 256篇 |
2016年 | 257篇 |
2015年 | 184篇 |
2014年 | 222篇 |
2013年 | 1131篇 |
2012年 | 277篇 |
2011年 | 330篇 |
2010年 | 245篇 |
2009年 | 294篇 |
2008年 | 320篇 |
2007年 | 336篇 |
2006年 | 324篇 |
2005年 | 314篇 |
2004年 | 303篇 |
2003年 | 308篇 |
2002年 | 297篇 |
2001年 | 560篇 |
2000年 | 478篇 |
1999年 | 364篇 |
1998年 | 182篇 |
1997年 | 141篇 |
1996年 | 153篇 |
1995年 | 149篇 |
1994年 | 156篇 |
1993年 | 159篇 |
1992年 | 290篇 |
1991年 | 310篇 |
1990年 | 292篇 |
1989年 | 323篇 |
1988年 | 295篇 |
1987年 | 288篇 |
1986年 | 328篇 |
1985年 | 315篇 |
1984年 | 265篇 |
1983年 | 252篇 |
1982年 | 169篇 |
1981年 | 156篇 |
1980年 | 128篇 |
1979年 | 173篇 |
1978年 | 102篇 |
1977年 | 131篇 |
1976年 | 114篇 |
1975年 | 102篇 |
1974年 | 117篇 |
1973年 | 113篇 |
1972年 | 108篇 |
1971年 | 91篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
841.
Allele frequency data and forensic efficiency parameters for 10 STR loci: D3S1358, vWA, D16S539, D2S1338, D8S1179, D21S11, D18S51, D19S433, TH01 and FGA, were estimated from a sample of 207 unrelated individuals in Lodz region of Poland. 相似文献
842.
843.
Anghel A Marian C Pitulescu M Daba A Sirbu IO Rusu V Budowle B 《Forensic science international》2003,131(2-3):218-219
Allele frequencies for eight tetranucleotide short tandem repeat (STR) loci-CSF1PO, TPOX, TH01, F13A01, FESFPS, vWA, F13B, LPL-were obtained from a population sample of 105-122 unrelated individuals born in Transylvania and Banat (Romania). 相似文献
844.
Gavazzi SM Yarcheck CM Rhine EE Partridge CR 《International journal of offender therapy and comparative criminology》2003,47(3):291-308
Responding to a model of juvenile offender case supervision that called for a new intervention paradigm to guide the work of probation and parole officers, the present article reports on the use of a family-based parole initiative known as the Growing Up FAST program. Developed in part as a tool for use within this new intervention paradigm, the Growing Up FAST parole program targets serious youthful offenders who have been released from juvenile correctional facilities and their families. Based on elements contained within the "what works" literature and the Balanced and Restorative Justice model, this program recognizes the central role that field staff can play in rehabilitation efforts. Demographic information and formative data regarding the first set of families to participate in this program are presented, then program limitations and lessons learned as part of the initial offering of this parole initiative are discussed. 相似文献
845.
Gunshot wounds in suicide cases are self-inflicted wounds. Self-inflicted wounds in suicide cases are usually caused by contact firing and are of great forensic significance. Evaluation of contact wound may be associated with difficulties if the bore gets obstruction prior to firing. This paper investigates the phenomenon and interprets the results of test firing conducted on 20% gelatine block at 10 degrees C, using .38 Special revolver with obstruction of a bullet in the bore. Test firings were conducted in three different muzzle-target contact conditions keeping the muzzle pressed against the gel block in each case. The physical evidence and the wound ballistic parameter namely bullet track, remaining velocity of the bullets and volume of permanent cavity have been studied. When compared with the results of contact firing conducted with the same firearm without having any bore obstruction under similar conditions, it has been found that the physical evidence and the wound ballistic parameters would be helpful for interpretation of such unusual incidents for forensic inference. 相似文献
846.
Investigating why people use the hospital emergency department (ED) for visits considered medically nonurgent can enhance our understanding of people's expectations of health care services, of their conceptions of prudent lay judgment, and of difficulties in negotiating the logistics of primary care services. This study identified reasons for such ED use from users' perspectives in both pediatric and adult visits. Respondents were asked to explain what brought them to the ED and to define an emergency. The study was conducted in two northeastern U.S. hospital EDs. The analysis drew on a convenience sample of 408 (331 pediatric, 77 adult users) face-to-face interviews that employed both open- and closed-ended questions. Findings indicate most patients had medical insurance and a regular place of care and most arrived by car or taxi. Twelve main themes emerged under three main categories: conceptions of needs, appropriateness, and preference for the ED. The findings indicate that various reasons for ED use may be construed as access issues. These include beliefs regarding limited availability of after-hour consultation services and of timely appointments at one's primary care site. Drawing on the findings, a typology that distinguishes between groups of users according to their preference for the ED, a level of congruence between their own reason and their definition of an emergency was developed. The typology suggests that people's concerns that influence their decision to come to the ED cannot be solved simply by expanding primary care services or by educational interventions. Its application yields recommendations for services and interventions. 相似文献
847.
848.
849.
This article discusses the phenomenon of "context effects" by reviewing the findings and practices of a range of scientific fields, including astronomy, physics, biology, medicine, and especially the relevant research and theory from psychology. Context information, such as expectations about what one is supposed to see or conclude, has been found to have a small but relentless impact on human perception, judgment, and decision-making. The article then considers the vulnerability of forensic science practice to context effects, and concludes by suggesting that forensic science adopt practices familiar in other fields of scientific work, in particular blind or double-blind testing and also the use of evidence line-ups. 相似文献
850.