全文获取类型
收费全文 | 346篇 |
免费 | 26篇 |
专业分类
各国政治 | 19篇 |
工人农民 | 52篇 |
世界政治 | 14篇 |
外交国际关系 | 21篇 |
法律 | 186篇 |
中国政治 | 8篇 |
政治理论 | 67篇 |
综合类 | 5篇 |
出版年
2024年 | 1篇 |
2023年 | 5篇 |
2022年 | 5篇 |
2021年 | 5篇 |
2020年 | 12篇 |
2019年 | 16篇 |
2018年 | 13篇 |
2017年 | 26篇 |
2016年 | 25篇 |
2015年 | 20篇 |
2014年 | 14篇 |
2013年 | 57篇 |
2012年 | 22篇 |
2011年 | 15篇 |
2010年 | 14篇 |
2009年 | 17篇 |
2008年 | 15篇 |
2007年 | 9篇 |
2006年 | 14篇 |
2005年 | 13篇 |
2004年 | 13篇 |
2003年 | 10篇 |
2002年 | 7篇 |
2001年 | 6篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1997年 | 4篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1992年 | 1篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有372条查询结果,搜索用时 15 毫秒
41.
Comparison of the Columnar‐Thin‐Film and Vacuum‐Metal‐Deposition Techniques to Develop Sebaceous Fingermarks on Nonporous Substrates,
下载免费PDF全文
![点击此处可从《Journal of forensic sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Stephanie F. Williams M.P.S. Drew P. Pulsifer Ph.D. Robert C. Shaler Ph.D. Robert S. Ramotowski M.S. Shelly Brazelle M.S. Akhlesh Lakhtakia Ph.D. D.Sc. 《Journal of forensic sciences》2015,60(2):295-302
Both the columnar‐thin‐film (CTF) and the vacuum‐metal‐deposition (VMD) techniques for visualizing sebaceous fingermarks require the deposition of a material thereon in a vacuum chamber. Despite that similarity, there are many differences between the two techniques. The film deposited with the CTF technique has a columnar morphology, but the film deposited with the VMD technique comprises discrete islands. A split‐print methodology on a variety of fingermarked substrates was used to determine that the CTF technique is superior for developing fingermarks on clear sandwich bags and partial bloody fingermarks on stainless steel. Both techniques are similar in their ability to develop fingermarks on glass but the CTF technique yields higher contrast. The VMD technique is superior for developing fingermarks on white grocery bags and the smooth side of Gloss Finish Scotch Multitask? tape. Neither technique worked well for fingermarks on black garbage bags. 相似文献
42.
Qualitative Differences Among Rural and Urban Intimate Violence Victimization Experiences and Consequences: A Pilot Study 总被引:1,自引:0,他引:1
T. K. Logan Robert Walker Jennifer Cole Stephanie Ratliff Carl Leukefeld 《Journal of family violence》2003,18(2):83-92
Relatively little is known about rural women's intimate violence experiences in comparison to urban women's experiences, partly because of the difficulty in accessing rural women. This pilot study used a protective order sample of 23 women (15 urban and 8 rural), which provides an access point that is relatively similar for comparisons across rural and urban areas. The number of participants is low and, therefore, results are preliminary. However, several significant findings emerged. Rural women reported significantly less social support, less education, less income, more physical abuse in the preceding year, more childhood physical and sexual abuse, and worse overall health and mental health, as well as encountering abuse earlier in the relationship. Both groups reported higher rates of illegal drug and cigarette use than those among the general population. The findings highlight some overall important themes in examining rural and urban intimate violence victims by suggesting that rural and urban intimate violence victims have different victimization experiences and service needs. Implications for further research and intervention are discussed. 相似文献
43.
44.
Little is known about how older women cope in long-term abusive intimate relationships. Understanding their coping strategies may give insight into how to further support their effective coping efforts. Interviews were conducted with 38 women older than age 55 years. Grounded theory analysis demonstrated that women who remained in their abusive relationships employed mainly cognitive (emotion-focused) strategies to find meaning in a situation that was perceived as unchangeable. By reappraising themselves, their spouses, and their relationships they refocused energies in certain roles, set limits with their abusers, and reached out to others (friends, family, and community organizations). Some women appeared to thrive, others merely survived, but all maintained the appearance of conjugal unity. 相似文献
45.
The Tri-State Crematory Incident in Nobel, GA (February 2001) revealed limitations in traditional human cremated remains (cremains) analytical methodology. The goal of this study was to develop a method for effectively classifying questionable sets of cremains as legitimate or contaminated. Eighty-eight samples of known human cremains, concrete, mixtures of the two, and questionable sets of cremains were acid digested and analyzed for 21 elements by Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES). Variable cluster and principle component analyses identified the seven elements (Sb, B, Li, Mn, Sr, Tl, and V) used to develop discriminant functions to classify questionable sets into two groups: cremains and concrete. The discriminant analysis shows that at the 0.90 probability level, mixtures of 50% or less human content were classified as concrete. Mixtures with 90% human content classified as cremains. Sixty percent and 75% human content mixtures remained in the questionable classification, but as the concentration of human increased in the mixture, the probability of assignment to the known cremains group increased. Most of the questionable human samples classified as cremains. This is a pilot study and cannot yet satisfy Daubert standards for courtroom admissibility, but it indicates that it is possible to determine the legitimacy of cremains using elemental analysis by ICP-OES coupled with multivariate statistical analysis. 相似文献
46.
Carmichael SE Piquero AR 《International journal of offender therapy and comparative criminology》2006,50(1):71-87
In the limited research on the origins of sanction threat perceptions, researchers have focused on either the effects of actively engaging in crime or the effects of formal sanctioning but rarely on both (i.e., the arrest ratio or the number of arrests relative to the number of crimes committed). This article extends this line of research by using a sample of Colorado inmates and measures arrest ratios and sanction perceptions for eight different crime types. Analyses reveal that the offenders report both significant experiential and arrest ratio effects. Theoretical and policy implications, limitations, and directions for future research are outlined. 相似文献
47.
48.
Many studies show that democracy promotes freer trade. However, because they typically focus on “at-the-border” barriers such as tariffs, we know little about democracy’s effects on “behind-the-border” barriers such as discrimination in government procurement. We address this question by asking how democracy affects governments’ incentives to discriminate against foreigners when buying goods and services. We argue that “buy national” policies have unclear costs and are harder to attack than policies that visibly interfere with consumers’ ability to buy foreign goods. This makes such provisions more attractive than tariffs to democratic leaders seeking reelection. We thus hypothesize that democracy leads to lower tariffs but to greater discrimination in public procurement. We support this hypothesis with an analysis of procurement and imports in 138 countries from 1990 to 2008. Our results imply that a full understanding of the democracy–trade policy relationship requires attention to increasingly prominent behind-the-border barriers to trade. 相似文献
49.
Chris Giacomantonio Stephanie Goodwin Garland Carmichael 《Police Practice and Research》2020,21(4):401-417
ABSTRACT This article presents findings from an assessment of the immediate behavioural impact of the ‘Verbal Judo’ de-escalation training program, delivered to officers in a Canadian police service in 2017, and represents the first evaluation of Verbal Judo. The evaluation utilized systematic observations of officers in videotaped simulations, comparing a baseline group of officers to officers trained in Verbal Judo. The study found that five of 15 coded behaviours were impacted at a statistically significant level in the hypothesized direction, and these tended to be simpler behaviours encouraged by the training (such as identifying oneself or providing a reason for contact), while more complex behaviours (such as empathizing with the subject) were not impacted. The evaluation also found that likelihood of utilizing de-escalation skills decreased as an officer’s years of experience increased. The paper closes by outlining the implications of these findings for de-escalation training, and elaborates the main limitations of the study. 相似文献
50.
Seventy percent of Americans identify as middle class, but one in three middle‐income households do not earn enough to support their family at the most basic level, and four in five do not earn enough to afford a sustainable budget. This incongruity explains the increasing frustration of many workers. Yet official government measures do not capture this reality, and as a result, policy makers continue to create economic policies that perpetuate the structural mismatch between wages and costs. This Viewpoint essay addresses these shortcomings. After reviewing alternatives to the federal poverty level, it argues that the most realistic and accurate floor to the middle class is the ALICE (Asset Limited, Income Constrained, Employed) Household Survival Budget. The essay then turns to policies that help realign wages and cost of living and presents initiatives that are being implemented in states across the country. Four policy areas would enable more workers to support their families and fulfill the promise of being middle class in America: meaningful work with stable and sufficient wages, upskilling and digital retooling, fiscal cushion for periods of financial instability, and affordable credit. 相似文献