全文获取类型
收费全文 | 439篇 |
免费 | 28篇 |
专业分类
各国政治 | 15篇 |
工人农民 | 76篇 |
世界政治 | 23篇 |
外交国际关系 | 30篇 |
法律 | 254篇 |
中国政治 | 6篇 |
政治理论 | 63篇 |
出版年
2024年 | 1篇 |
2023年 | 3篇 |
2022年 | 11篇 |
2021年 | 7篇 |
2020年 | 16篇 |
2019年 | 23篇 |
2018年 | 26篇 |
2017年 | 37篇 |
2016年 | 37篇 |
2015年 | 21篇 |
2014年 | 34篇 |
2013年 | 75篇 |
2012年 | 21篇 |
2011年 | 16篇 |
2010年 | 18篇 |
2009年 | 17篇 |
2008年 | 18篇 |
2007年 | 12篇 |
2006年 | 10篇 |
2005年 | 9篇 |
2004年 | 4篇 |
2003年 | 4篇 |
2002年 | 3篇 |
2001年 | 4篇 |
2000年 | 4篇 |
1999年 | 6篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1990年 | 1篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1985年 | 7篇 |
1984年 | 4篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有467条查询结果,搜索用时 15 毫秒
61.
62.
Jessica Skinner PhD Natalie Langley PhD Malin Joseph MS James Herrick MSA Robert Brown BS Brian Waletzki BS Peter Goguen Dipl T Loukham Shyamsunder PhD Subramaniam Rajan PhD 《Journal of forensic sciences》2023,68(3):757-767
Forensic fractographic features of bone reliably establish crack propagation in perimortem injuries. We investigated if similar fracture surface features characterize postmortem fractures. Experimentally induced peri- and postmortem fractures were used to assess if fractographic features vary as bone elasticity decreases during the postmortem interval (PMI). Thirty-seven unembalmed, defleshed human femoral shafts from males and females aged 33–81 years were fractured at varying PMIs with a drop test frame using a three-point bending setup and recorded with a high-speed camera. Vital statistics, cause of death, PMI length, temperature, humidity, collagen percentage, water loss, fracture energy, and fractography scores were recorded for each sample. Results showed that fractographic features associated with perimortem fractures were expressed in PMIs up to 40,600 accumulated degree hours (ADH), or 60 warm weather days. Hackle was the most consistently expressed feature, occurring in all fractures regardless of ADH. The most variable characteristics were wake features (78.4%) and arrest ridges (70.3%). Collagen percentage did not correlate strongly with ADH (r = −0.04, p = 0.81); however, there was a strong significant correlation between ADH and water loss (r = 0.74, p < 0.001). Multinomial logistic regression showed no association between fractographic feature expression and ADH or collagen percentage. In conclusion, forensic fractographic features reliably determine initiation and directionality of crack propagation in experimentally induced PMIs up to 40,600 ADH, demonstrating the utility of this method into the recent postmortem interval. This expression of reliable fractographic features throughout the early PMI intimates these characteristics may not be useful standalone features for discerning peri- versus postmortem fractures. 相似文献
63.
Reina C. Neufeldt Mary Lou Klassen John Danboyi Jessica Dyck Mugu Zakka Bako 《Third world quarterly》2020,41(7):1103-1121
ABSTRACTThe emphasis on local or hybrid efforts in peacebuilding literature brings front and centre the importance of being rooted within a particular context, with leadership and vision for social change and justice proffered by local actors. This is the same emphasis found in development literature and a necessary foundation for transformation. Scholars and practitioners nevertheless also note a role for outsiders in supporting local efforts (eg Lederach in 2005). Yet a significant challenge arises for outsiders, and to some extent local actors: how do you know what was tried or is underway that you might support or from which you might learn? This paper reports findings from a collaborative research project that examined the gap between the practice of peacebuilding locally and internationally available ‘knowledge’ via publications produced on local peacebuilding in Jos, Nigeria, between 2001 and 2008. It identifies a staggering gap between efforts and knowledge in the form of publications. The paper discusses the implications of the findings in terms of what it means for outsiders when thinking about helping resource local transformation efforts. 相似文献
64.
Christina Mancini Amy K. Cook Jessica C. Smith Robyn McDougle 《Journal of school violence》2020,19(4):610-622
ABSTRACT Recently, states have enacted teacher-carry laws. While controversial, little scholarship has tapped public attitudes toward such reforms. Because public opinion shapes policy, the public is an important stakeholder in this debate. Thus, we investigated three questions. First, how supportive is the public of arming teachers? Second, what demographic and social divides exist, if any, for reform approval? Finally, do crime-related perceptions, concerning views about public safety, and criminogenic influences shape policy preferences? We test these questions using a 2018 poll of Virginia residents (N = 521). Overall, approval for teacher-carry is split. Crime-related perceptions mediate some of the initial social and demographic divides in opinion but other correlates, such as parental status, remain salient predictors of views. Implications are discussed. 相似文献
65.
Margaret H. Lloyd Sieger Jessica Becker Kelly Earles Karin Thompson-Wise Kaitlin Hagain 《Family Court Review》2023,61(3):586-601
In 2019, the family treatment court (FTC) best practice standards (the Standards) were published to clarify attributes of FTC programs associated with superior child, parent, and family outcomes. The Standards cover the breadth of FTC operations including program structure and leadership, substance use treatment and complementary services, and behavioral responses to participants. This study aimed to develop an instrument (the Model Standards Implementation Scale; “MSIS”) that stakeholders can use to assess implementation of the Standards by individual FTCs. The MSIS balances usability with scientific validity. Interrater reliability (IRR), internal consistency, and several types of validity were assessed. Results indicated moderate to strong IRR, high internal consistency, mixed known groups validity depending on Standard, and high convergent and divergent validity. Initial findings suggest good validity and usability of the MSIS for evaluating FTC Standards' implementation. Notably, the process of using the tool functioned to educate FTC team members on the Standards. Although implementation of the MSIS is a resource-intensive process, the opportunity to receive constructive feedback proved to be an effective incentive for initial and subsequent participation in the evaluation among FTCs. Future research is needed to examine predictive validity, including association between Standards' implementation and family outcomes in FTCs. 相似文献
66.
The uneven and combined development of class forces: migration as combined development 总被引:1,自引:0,他引:1
Jessica Evans 《Cambridge Review of International Affairs》2016,29(3):1061-1073
One of the more interesting and potentially powerful developments within Marxist approaches to the field of international relations has been the recent revival of Trotsky’s concept of uneven and combined development (UCD). However, it appears that there have been very few attempts within this literature to specify in concrete terms what is meant by mechanisms of ‘combination’. Failing this, UCD runs the risk of falling into triviality. To this end, this article suggests that migration has historically functioned as a crucial element of combined development, contributing to the uneven incorporation of non-capitalist societies into the remit of a developing world capitalist market. As illustration, I take settler-colonial development and the Great Atlantic Migrations as my focal point, drawing out a comparative study of Argentine and Canadian wheat production in the late nineteenth century. In positing these migrations as mechanisms of combined development I suggest that such were the means by which both European capitalism developed extensively and intensively and New World societies were subjected to the ‘pressures of backwardness’, compelled to transform their own social relations of production. 相似文献
67.
While the existing literature emphasizes that elites often have incentives to pander to nationalist sentiment, much less attention has been paid to elite efforts to subdue popular nationalism, either to avoid domestic instability or international escalation. This article examines how different governments respond to nationalist protests and the resulting effects on the risk that interstate disputes will escalate to armed conflict. We argue that government responses to nationalist protests tend to vary in patterned ways across regime types. Nationalist protests present particular dangers in weakly institutionalized democracies, where demonstrations often pose serious threats of instability but are difficult or costly for the government to subdue, tempting or forcing leaders to escalate to appease domestic critics. We illustrate the theory with four cases representing a range of regime types: Vietnam, Cambodia, Thailand, and the Philippines. 相似文献
68.
Francois M. Luyet Jessica Wipperfurth Amanda Palm Barbara L. Knox 《Journal of family violence》2016,31(7):805-814
When Abusive Head Trauma (AHT) is suspected, the presence of extracranial lesions can be a decisive factor in confirming the diagnosis. In this article, we briefly review and illustrate some of the skin lesions and other extracranial injuries frequently associated with AHT. 相似文献
69.
Jessica J. Eckstein 《Journal of family violence》2016,31(2):215-225
Victims of intimate partner violence (IPV) often encounter negative societal reactions to their abuse. A quantitative self-report study examined the existence of these potential identity-threats to former IPV victims (N?=?345, n?=?106 males, n?=?239 females). Biological sex, abuse type (i.e., psychological, physical) and severity, and IPV relationship type (i.e., situational couple violence, intimate terrorism) were each modeled as predictors of IPV stigma and its social management strategies. Results indicated differences in how IPV stigma was experienced and communicatively managed by diverse victims. Findings, interpreted through an applied lens for IPV practitioners and victims, also add nuance to existing theories of IPV, interpersonal communication, and social stigma. 相似文献
70.