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   2506篇
  免费   108篇
各国政治   121篇
工人农民   54篇
世界政治   88篇
外交国际关系   456篇
法律   1229篇
中国共产党   17篇
中国政治   127篇
政治理论   235篇
综合类   287篇
  2024年   4篇
  2023年   40篇
  2022年   41篇
  2021年   38篇
  2020年   93篇
  2019年   113篇
  2018年   101篇
  2017年   122篇
  2016年   94篇
  2015年   77篇
  2014年   84篇
  2013年   245篇
  2012年   135篇
  2011年   124篇
  2010年   61篇
  2009年   99篇
  2008年   133篇
  2007年   193篇
  2006年   151篇
  2005年   132篇
  2004年   117篇
  2003年   90篇
  2002年   77篇
  2001年   56篇
  2000年   50篇
  1999年   29篇
  1998年   17篇
  1997年   8篇
  1996年   8篇
  1995年   8篇
  1994年   11篇
  1993年   9篇
  1992年   8篇
  1991年   14篇
  1990年   5篇
  1989年   9篇
  1988年   6篇
  1987年   2篇
  1986年   7篇
  1985年   1篇
  1984年   1篇
  1979年   1篇
排序方式: 共有2614条查询结果,搜索用时 31 毫秒
801.
ABSTRACT

This article presents an analytical framework that guides the contributions to this special issue and, in general terms, aims at enabling a systematic investigation of processes of negotiation in the international promotion of democracy. It first briefly introduces the rationale for studying democracy promotion negotiation, offers a definition, and locates the general approach within the academic literature, bringing together different strands of research, namely studies of negotiation in international relations as well as research on democratization and democracy promotion. The larger part of the article then discusses key concepts, analytical distinctions and theoretical propositions along the lines of the three research questions that are identified in the introduction to this special issue. More specifically, the article (1) offers a typology that facilitates a systematic empirical analysis of the issues that are discussed in democracy promotion negotiations; (2) takes initial steps towards a causal theory of democracy promotion negotiation by identifying and discussing a set of parameters that can be expected to shape such negotiations; and (3) introduces key distinctions and dimensions that help guide empirical research on the output and outcome of negotiations in democracy promotion.  相似文献   
802.
Governments tend to focus on short-term policies to address the immediate effects of high food prices when spikes occur, while in the long term, urban residents are left to their own devices struggling to ensure adequate household food consumption. Using data collected in three cities in Cameroon among 300 households, this article documents participants’ opinions on appropriate policies to address high food prices as well as how households cope with chronic high food prices. It emphasises the importance of long-term government strategies such as improved farm-to-market roads and agricultural sector supports as means to improve food security.  相似文献   
803.
目的死亡时间的推测是法医病理学研究的重点和难点。皮肤具有一定生物力学特性,是机体死后分解破坏发生较迟的部分。本研究观察不同环境条件下死后大鼠皮肤生物力学特性的改变,探索其与死亡时间的关系。方法系统测试雌性SD大鼠在不同环境条件下(A组较高环境温度,B组较低环境温度)的死后皮肤生物力学特性。结果 A组大鼠皮肤死后张应力、延伸率在死后1d内先降低后升高,1d~6d逐渐降低,6d~7d略呈上升趋势;B组大鼠皮肤死后张应力在死后2d内先降低后升高,2d~16d逐渐降低,16d~20d略上升。结论 A组的张应力、延伸率和B组的张应力、应变能密度均表现出与死亡时间较好的相关性,是较好的推测死亡时间的生物力学参数。  相似文献   
804.
This article discusses the trial of visual research methods in a socio-economic research and development project with women subsistence farmers and their families in two regions of Papua New Guinea (PNG). It reports on the benefits and challenges of three visual research methods (drawing, participatory photography, and picture elicitation) to explore the agricultural practice of women subsistence farmers and their families. The paper discusses the potential of these methods for enhancing community engagement, reducing the power imbalance between researchers and participants, and promoting dialogue and reflection to better understand the needs and practices of subsistence farmers.  相似文献   
805.
This article presents experiences with collaborative and on-farm research based on the implementation of a four-year Programme for Agricultural and Natural Resources Transformation for Improved Livelihoods (PANTIL) at Sokoine University of Agriculture (SUA) in Morogoro, Tanzania. It outlines the basic elements in the implementation of a programme aimed to be demand-based, and discusses the challenges encountered in combining collaborative research with the empowerment of farmers. Finally, the article draws out some lessons with implications for the future organisation of collaborative and on-farm agricultural research.  相似文献   
806.
Local knowledge has continued to gain popularity among development practitioners in the last four decades. However, the future of local knowledge seems hazy to some academics and researchers, perhaps due to the methodological challenges in operationalising local knowledge in development research. Rather than appropriate its full potential for sustainable (global) progress, renditions on the relevance of local knowledge in development research agenda have largely become rhetoric. Nonetheless, this viewpoint outlines 20 pertinent reasons in support of the relevance of local knowledge and why it has a future in development theory and practice.  相似文献   
807.
事件相关电位(event-related potential,ERP)是从神经电生理层面客观分析和研究人体心理活动的最有效方法之一。目前主要用于测谎等研究,在临床上,还用于脑血管疾病、痴呆、创伤性脑损伤患者认知能力评估以及精神心理疾病的辅助诊断。随着ERP检测技术的进一步发展,在法医学领域必将具有更为广泛的应用前景。  相似文献   
808.
冰毒为纯白或淡黄色结晶体,为利益所驱,很多制贩毒者利用其它外观相似的晶体充当替代品或者掺杂剂,在常规检测时,用气/质联用仪无法检验其成分。本文利用扫描电镜/能谱仪和X-射线衍射仪对外观酷似"冰毒"的晶状物成分进行检测,先利用扫描电镜/能谱仪测定未知物主要元素,再利用X-射线衍射仪测定其晶体结构和成分。两者有效结合成功地鉴别假"冰毒"物质的成分。  相似文献   
809.
810.
Family courts are seeing an increasing number of separating or divorced families who have a special needs child. These cases present complex challenges for family law professionals charged with crafting parenting plans based on best interests standards. For many of these children, the typical developmentally based custodial arrangements may not be suitable, given the child's specific symptoms and treatment needs. We present a model for understanding how the general and specific needs of these children, as well as the demands on parents, can be assessed and understood in the context of divorce. This includes an analysis of risk and protective factors that inform timeshare and custodial recommendations and determinations. The risk assessment model is then applied to three of the most commonly occurring childhood neurodevelopmental and psychiatric disorders likely to be encountered in family court, namely, attention deficit/hyperactivity disorder, depressive disorders, and autistic spectrum disorders.
    Key Points for the Family Court Community
  • There has been a dramatic rise in the population of children with neurodevelopmental, psychiatric, and medical syndromes whose parents are disputing custody in the family courts.
  • Family law professionals of all disciplines should develop a fundamental knowledge base about the most commonly seen special needs children in family court, such as those with neurodevelopmental conditions like autistic spectrum disorder, attention deficit/hyperactivity disorder, and severe depressive disorders (especially with teenagers), which may involve suicidal or self‐harming behaviors.
  • Commonly recommended parenting plans may be inappropriate for many special needs children, as some function significantly below their chronological age and pose extreme behavioral challenges.
  • A systematic analysis of risk and protective factors should inform timeshare arrangements and determinations with this varied population, including the safety of the child and severity of the disorder, parental commitment and availability to pursue medical, educational, and therapeutic services, the parental attunement and insightful about the problem, and the differential parenting skills of each parent.
  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