全文获取类型
收费全文 | 390篇 |
免费 | 19篇 |
专业分类
各国政治 | 36篇 |
工人农民 | 38篇 |
世界政治 | 34篇 |
外交国际关系 | 20篇 |
法律 | 189篇 |
中国政治 | 7篇 |
政治理论 | 82篇 |
综合类 | 3篇 |
出版年
2023年 | 2篇 |
2021年 | 3篇 |
2020年 | 4篇 |
2019年 | 10篇 |
2018年 | 11篇 |
2017年 | 15篇 |
2016年 | 15篇 |
2015年 | 10篇 |
2014年 | 7篇 |
2013年 | 54篇 |
2012年 | 15篇 |
2011年 | 12篇 |
2010年 | 7篇 |
2009年 | 10篇 |
2008年 | 10篇 |
2007年 | 18篇 |
2006年 | 13篇 |
2005年 | 11篇 |
2004年 | 12篇 |
2003年 | 12篇 |
2002年 | 12篇 |
2001年 | 11篇 |
2000年 | 8篇 |
1999年 | 9篇 |
1998年 | 4篇 |
1997年 | 9篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1994年 | 10篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 3篇 |
1990年 | 11篇 |
1989年 | 3篇 |
1988年 | 6篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 4篇 |
1984年 | 6篇 |
1983年 | 7篇 |
1982年 | 4篇 |
1981年 | 5篇 |
1979年 | 6篇 |
1978年 | 2篇 |
1977年 | 3篇 |
1976年 | 2篇 |
1975年 | 4篇 |
1974年 | 2篇 |
1968年 | 2篇 |
1964年 | 1篇 |
排序方式: 共有409条查询结果,搜索用时 31 毫秒
381.
Shalhoub R Quinones I Ames C Multaney B Curtis S Seeboruth H Moore S Daniel B 《Forensic science international》2008,178(2-3):199-203
There are many techniques available for the recovery of fingermarks at scenes of crime including the possibility of taking casts of the marks. Casts can be advantageous in cases where other destructive recovery techniques might not be suitable, such as when recovering finger marks deposited on valued or immobile items. In this research, Isomark (a silicone-based casting material) was used to recover casts of finger marks placed on a variety of substrates. Casts were enhanced using cyanoacrylate fuming. Good quality marks were successfully recovered from a range of smooth, non-porous surfaces. Recovery from semi-porous surfaces was shown to be inefficient. DNA was subsequently extracted from the casts using QIAamp Mini extraction kits, amplified and profiled. Full DNA profiles were obtained 34% of samples extracted. 相似文献
382.
Abstract: The most accurate and precise methods for the assessment of age and stature often require knowledge of sex. Thus, being able to correctly identify sex from skeletal remains is critical in the forensic context. The presence of the os coxae or skull can never be guaranteed, making the development of reliable methods of sex estimation using other skeletal elements necessary. Using a 724 individual calibration sample from the Hamann‐Todd collection, this study identifies sexual dimorphism in the human scapula, and presents a new five‐variable discriminant function for sex estimation. The overall accuracy of this method proved to be 95.7% on the cross‐validated calibration sample, 92.5% on an 80 individual test sample from the Hamann‐Todd collection, and 84.4% on a 32 individual test sample from the skeletal collection of the Wichita State University Biological Anthropology Laboratory. Additionally, a slightly less accurate two‐variable model was developed and has cross‐validated accuracy of 91.3%. 相似文献
383.
The Right to Be Racist in College: Racist Speech,White Institutional Space,and the First Amendment 下载免费PDF全文
Throughout the post–civil rights era, colleges and universities across the United States have periodically experienced explicitly racist incidents on their campuses. From the hurling of racial slurs at students of color, to the hanging of nooses on campus, to students donning Ku Klux Klan outfits or throwing “ghetto” parties that caricaturize communities of color, these incidents challenge the notion that modern racism has changed to a more subtle form, referred to as color‐blind racism. We place these incidents within a broader context of race and institutions, suggesting a connection between overt racist expressions and the more covert elements of neoliberal color‐blind racism. Through a critical discourse analysis of news stories about these incidents, the website of the Foundation for Individual Rights in Education, and the controlling legal cases involving racist expression on campuses, we suggest that explicitly racist incidents operate in tandem with neoliberal educational policies and color‐blind racism to mark and reinscribe colleges and universities as white institutional spaces. 相似文献
384.
Alyssa M. Newcomb M.S. James T. Pokines Ph.D. Tara L. Moore Ph.D. 《Journal of forensic sciences》2017,62(1):67-73
Agricultural activity is a worldwide taphonomic process and can present unique challenges in the recovery of buried remains. Previous research has been mostly within the realm of site formation processes of archeological sites utilizing only surface material. This research expands upon the previous research by incorporating the distribution of subsurface material by the use of archeological excavation techniques. An experiment was conducted utilizing juvenile pig (Sus scrofa) skeletons buried in relative anatomical position at two different depths (15 cm below the surface [cmbs] and 22 cmbs). The burials were then subjected to different intervals of mechanical plowing: one, three, five, seven, or 10 plow passes. The skeletal material was recovered using pedestrian survey followed by hand excavation and screening of all sediments. This research shows that there is a significant relationship between the degree of plowing and the distance skeletal material is distributed and the percentage of material recovered undamaged. 相似文献
385.
386.
A new solid-phase extraction procedure for the determination of cocaine and some of its metabolites in brain tissue, using high-flow co-polymeric sorbents is reported as a substantial improvement on our recently reported procedure. The recovery of cocaine, norcocaine and cocaethylene was excellent as was the reproducibility of the extraction. The use of high-flow sorbents allowed the easy extraction of tissue without the need for a time-consuming lipase digestion, regardless of sample viscosity or physical nature. The use of these solid-phase columns provided many advantages over the more commonly used solvent extraction, including an increase in extraction speed and efficiency, reduced operator time, reduced solvent use and disposal volumes and exceptional extract quality. The procedure was successfully applied to rabbit brains spiked with cocaine, benzoylecgonine, norcocaine and cocaethylene. 相似文献
387.
388.
The potential for breath freshener strips to interfere with the accuracy of a breath alcohol test was studied. Twelve varieties of breath freshener strips from five manufacturers were examined. Breath tests were conducted using the infrared based BAC DataMaster or the fuel cell based Alco-Sensor IV-XL, 30 and 150 seconds after placing a breath strip on the tongue. No effect was observed using the Alco-Sensor system. Some of the strips gave a small reading at 30 seconds (less than or equal to 0.010 g/210 L apparent alcohol) using the DataMaster. Readings on the DataMaster returned to zero by the 150 second test. A proper pre-test observation and deprivation period should prevent any interference from breath freshener strips on breath alcohol testing. 相似文献
389.
Over the years, there have been a number of well-publicized incidents involving persons who seemingly maneuver police officers into shooting them. Such cases, while relatively rare compared with most forms of violence, nevertheless pose difficult challenges to law enforcement agencies. Relatively little is known about persons who engage in suicide by cop incidents. To our knowledge, there has been no published indepth research on instigators of suicide by cop who survived. In this paper, we present a case study of an individual who engaged in and lived through three separate "attempted suicide by cop" incidents. After describing relevant history as well as events of the most recent incident, we compare the case with the extant literature on suicide by cop and analyze commonalities and differences. Finally, we examine the legal considerations involved, with particular attention devoted to the role the individual's traumatic brain injury played in applying the insanity defense. 相似文献
390.
Larry?A.?GouldEmail author Clay?L.?Moore 《Journal of Police and Criminal Psychology》2003,18(2):20-27
This study compared the Niederhoffer Cynicism Scale, as a less costly alternative, to the MMPI-2 measure of cynicism. Data
were collected on both scales from a sample of male and female police academy trainees to compare reliability and construct
validity. Subgroup analyses by race and sex yielded comparable Cronbach alpha estimates for minority (.71) and majority (.83)
males to MMPI-2 norms. The Niederhoffer reliability values were marginally smaller (.73 to .77) but within the acceptable
range. Construct validity correlations between both scales were significant for minority and majority males. However, sample
size was too small for both minority and majority females groups to use appropriate statistical techniques to determine reliability
or validity. Continued use of the Niederhoffer is recommended for minority and majority males.
Author's Note: This paper was presented at the 44th Annual Meeting of the Western Social Science Association in Albuquerque, NM, in April of 2002. 相似文献