首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   950篇
  免费   41篇
各国政治   108篇
工人农民   25篇
世界政治   75篇
外交国际关系   61篇
法律   441篇
中国共产党   1篇
中国政治   7篇
政治理论   268篇
综合类   5篇
  2023年   4篇
  2022年   5篇
  2021年   8篇
  2020年   22篇
  2019年   25篇
  2018年   26篇
  2017年   33篇
  2016年   36篇
  2015年   30篇
  2014年   35篇
  2013年   154篇
  2012年   27篇
  2011年   27篇
  2010年   30篇
  2009年   19篇
  2008年   31篇
  2007年   24篇
  2006年   45篇
  2005年   40篇
  2004年   34篇
  2003年   42篇
  2002年   44篇
  2001年   12篇
  2000年   18篇
  1999年   13篇
  1998年   26篇
  1997年   18篇
  1996年   10篇
  1995年   7篇
  1994年   12篇
  1993年   16篇
  1992年   10篇
  1991年   8篇
  1990年   7篇
  1989年   11篇
  1988年   17篇
  1987年   4篇
  1986年   4篇
  1985年   3篇
  1984年   6篇
  1983年   3篇
  1982年   5篇
  1981年   5篇
  1979年   7篇
  1978年   5篇
  1975年   3篇
  1973年   3篇
  1972年   3篇
  1971年   2篇
  1968年   2篇
排序方式: 共有991条查询结果,搜索用时 15 毫秒
981.
As one element of agricultural service delivery, in Ethiopia crop protection service has generally only involved the private sector on a small scale. This article outlines a case study where private crop protection service (PCPS) was strengthened from 2006 to 2010 in Halaba Special District, southern Ethiopia. The study used questionnaires, analysis, service comparison, ranking, and indicator-based assessments. The study shows that PCPS in 2007/08 crop seasons served 1,104 households on 1,707?ha of land in 19 Kebeles, contributing US$327,752 in total. Assessment indicators values were better for PCPS than the informal crop protection service. Piloting PCPS strengthening is recommended to improve crop protection service and reduce crop loss in Ethiopia.  相似文献   
982.
Feedback in foreign policy occurs when a state's foreign policy affects the international context of that state and those changes in context subsequently impact on the state's future foreign policy decisions. In this way, feedback loops can develop, which may become self-reinforcing and in which foreign policy and international context continuously affect each other. Even though such processes are ubiquitous especially in a globalized world, they have hitherto received little systematic attention. We introduce cybernetics as a perspective that puts such feedback effects at the centre of attention and provides an accessible sequential framework for analysing them. Such a cybernetic analysis not only demonstrates the significance of feedback processes in foreign policies but also speaks to several recent debates in international relations theory and foreign policy analysis. In particular, it highlights processes of learning and change, of non-linearity and indeterminacy, and enables the researcher to integrate insights from structure- and agency-based approaches. We outline the merits of a cybernetic analysis by discussing the effects of feedback in the United States' War on Terror.  相似文献   
983.
Objective documentation of tears and abrasions to the external genitalia after sexual assault is an important part of the forensic examination. A 1% aqueous solution of toluidine blue (TB) dye is often used to highlight injury, but the dye can be difficult to see on dark skin. We evaluated a fluorescent dye for detecting injuries on all skin colors in a relevant preclinical murine model. We compared the ability of trained, blinded observers to detect unstained wounds and wounds stained with 1% fluorescein sodium (FL) and with TB. We also evaluated the cutaneous wound healing response after application of both dyes. The no‐dye group had significantly fewer (p < 0.05) true‐positive identifications compared to all the dye groups. No differences in effectiveness were detected between dye treatments. All groups exhibited statistically similar healing rates. These findings support the evaluation of fluorescein sodium in a future clinical study with human subjects.  相似文献   
984.
Ohio Rule of Juvenile Procedure 2(Y) allows juvenile courts to do what other courts cannot: designate additional parties to an action, allowing juvenile courts to better accomplish their statutory purpose of pursuing the best interests of children. However, sometimes this can lead to confusion about juvenile courts’ actions to protect children, especially when courts invoke Rule 2(Y) to stop interference with proceedings. This article will examine the historical foundations of Ohio's juvenile courts, the unique authority that they possess, and the conflicts that can arise due to interference with juvenile court proceedings. Ohio's juvenile courts have unique authority, and they can use that authority in a way that does not conflict with constitutional rights, while still working to protect the interests of children.  相似文献   
985.
Journal of Quantitative Criminology - Prior meta analyses of hot spots policing show that the approach reduces crime, but report relatively small mean effect sizes based on Cohen’s d. The...  相似文献   
986.
OBJECTIVES: This study assessed the relationship between Eyewitness Accuracy regarding a person met under conditions of high stress and performance on a standardized, neutral test of memory for human faces. METHOD: Fifty-three U.S. Army personnel were exposed to interrogation stress. Forty-eight hours later, participants were administered the Weschler Face Test and then asked to identify the one interrogator who they had encountered 48 h earlier. RESULTS: A significant positive relationship was observed between performance on the Weschler Face Test and performance on the Eyewitness task. Inaccurate eyewitnesses exhibited more False Negative errors when performing the Weschler Face Test. DISCUSSION: Trait ability to remember human faces may be related to how accurately people recall faces that are associated with highly emotional circumstances. Detection probability methods, such as ROC curve analyses, may be of assistance to forensic examiners, the police, and the courts, when assessing the probability that eyewitness evidence is accurate.  相似文献   
987.
988.
We report the case of a middle‐aged man, without medical history, who suddenly died at his workplace. The autopsy highlighted a pathological heart macroscopically, with multiple small white areas on the left myocardium. Coronary dissection revealed a pseudotumoural fibromyxoid aspect within the anterior interventricular artery (AIVA) and the left main coronary trunk, including reduction in their diameter with tight stenosis. Microscopic examination of these arteries showed fibroinflammatory wall destruction. In the left myocardium, there were multiple focal ischemic areas at different stages of recovery. Our case is an illustration of primary ischemic heart disease due to coronary arteritis, with a pseudotumoural presentation, which was revealed by sudden death. We discuss the cause of death and the etiological diagnosis preceding coronary arteritis.  相似文献   
989.
How does a configuration of policing work regardless of the differences among its constituent members, who may relate to various social fields and range from for-profit organizations to law-enforcement and other state agencies? The article aims at providing some of the answers to this critical question in the light of financial policing, at the interface between the fields of finance and security. With the emphasis on money laundering and terrorist financing, financial policing resonates with other policing configurations that are ‘partly detached from the institutions of the police and start referring to a more general associative practice of assembling risk knowledge, technologies and agencies into networks that govern through rendering and distributing risks’ (Huysmans 2014). The paper argues that everyday financial policing is based on a misunderstanding, as both its current condition of possibility and the fundamental structure of communication between the involved parties. This focus on misunderstanding contributes to question traditional interpretations of (national and/or international) partnership against policing-related public problems. To help understand the paradoxical and controversial productivity of misunderstanding as a sine qua non condition of policing, the article draws on a transatlantic perspective with empirical research in the European Union Institutions, the United Kingdom and Canada.  相似文献   
990.
Citizens’ attitudes toward the death penalty have been effected by the availability of life without parole (LWOP). Our analysis focuses upon data from a representative sample of Kentuckians on death penalty attitudes. The factors influencing and related to death penalty support and compared to support for LWOP are considered along with a review of Kentucky survey findings from 1989–2016. The results reveal consistent support for LWOP over the death penalty. Male Kentucky residents with a college education were most likely to support life without parole over capital punishment while male conservatives did not.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号