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   808篇
  免费   69篇
各国政治   6篇
工人农民   3篇
世界政治   9篇
外交国际关系   148篇
法律   550篇
中国共产党   3篇
中国政治   12篇
政治理论   38篇
综合类   108篇
  2024年   6篇
  2023年   8篇
  2022年   11篇
  2021年   16篇
  2020年   29篇
  2019年   25篇
  2018年   19篇
  2017年   14篇
  2016年   21篇
  2015年   18篇
  2014年   23篇
  2013年   23篇
  2012年   40篇
  2011年   33篇
  2010年   35篇
  2009年   95篇
  2008年   143篇
  2007年   146篇
  2006年   50篇
  2005年   21篇
  2004年   21篇
  2003年   16篇
  2002年   10篇
  2001年   7篇
  2000年   12篇
  1999年   10篇
  1998年   2篇
  1997年   3篇
  1996年   2篇
  1995年   1篇
  1994年   1篇
  1993年   4篇
  1992年   3篇
  1991年   2篇
  1989年   4篇
  1986年   1篇
  1985年   1篇
  1981年   1篇
排序方式: 共有877条查询结果,搜索用时 31 毫秒
31.
As the emergence of nongovernmental conservation efforts generates conflict among various stakeholders, the causal story that each party articulates regarding conservation and the causes of land degradation reflects their unique interests. This study uses existing literature to evaluate causal stories surrounding a contemporary conservation effort: Montana's American Prairie Reserve. Through qualitative review of web‐based documents and newspaper articles, it generates a preliminary account of key stakeholders' causal stories. The case study suggests that parties who might be disadvantaged by ascribing responsibility for environmental harms in an adversarial fashion may instead elect to articulate causal stories that are more neutral than existing approaches might forecast. The study concludes by suggesting that further development of causal story literature may enable it to better address contemporary conservation efforts.  相似文献   
32.
《Labor History》2012,53(4):423-458
Well known is that the National Labor Relations Act (NLRA, 1935) in the United States places a largely per se ban on nonunion employee representation (ER) groups which deal with employers over a term or condition of employment. Much less well known is that America’s other labor law, the Railway Labor Act (RLA, 1926), takes a different approach and permits employers to operate such councils and committees as long as they do not perform a collective bargaining function or interfere with workers’ free choice of a bargaining agent. Thus, under the RLA Delta Air Lines is able to operate what is today the closest living approximation to a 1920s-style ER plan while hundreds of other companies (e.g. Polaroid) under the jurisdiction of the NLRA have been forced over the years to disband similar groups on grounds they are a proscribed company union. No study to date has explored the history behind the RLA and NLRA’s divergent treatment of nonunion ER groups so this article takes a first look. The main part of the story covers the 1920–1935 period and examines the events, people, and experiences associated with company unions and ER in, respectively, the rail and manufacturing industries and why the legislative outcome in the former was a permissive stance on nonunion committees but prohibitive in the latter. The last part of the paper fast-forwards the RLA-NLRA story from the 1930s to contemporary law and practice in order to demonstrate how “history matters” when it comes to what employers can and cannot do with nonunion representation groups, such as works councils, participation and involvement committees, and dispute resolution forums.  相似文献   
33.
文章采用文献研究的方法对83份P2P网贷平台构成非法吸收公众存款罪的裁判文书进行实证分析。通过对平台异化模式的定性分析和平台负债情况的定量分析以及与刑事责任程度的交叉分析,文章认为,平台异化是P2P网贷平台构成非法吸收公众存款罪的基础性因素,负债规模、存款人人数和无法清偿的数额等三个因素都对刑事责任的程度产生影响。而且相比之下,无法清偿的数额对刑事责任影响的程度最为显著。实际上对P2P网贷平台追究非法吸收公众存款罪的刑事责任是因为网贷平台无法清偿举债数额巨大,即因债致罪。这种因债致罪的司法行为逻辑,可以从司法者作为“清场者”的功能定位和对社会秩序的价值追求来解释其合理性,但是从多元价值权衡和刑事民事分离的角度分析,其又是不合理的。  相似文献   
34.
The global proliferation of precision-strike systems may be challenging the foundations of Western military-technological supremacy. Relatedly, the development of so-called Anti-Access and Area Denial (A2/AD) capabilities across the globe threatens to complicate Western freedom of military movement and access, and could give way to a more contested military-strategic environment. The twin challenges of precision-strike proliferation and A2/AD strongly impact NATO’s agenda, which revolves around strengthening deterrence and defence in Eastern Europe, and addressing the different threats emanating from the so-called Southern European neighbourhood. In order to address or mitigate such challenges, the Alliance needs to produce operational concepts and capabilities able to deliver deterrence and expeditionary warfare in a maturing precision-strike environment, one characterised by the emergence of A2/AD capabilities.  相似文献   
35.
Chris Ealham 《Labor History》2017,58(3):245-270
Revisionist historians and their Neo-Revisionist/conservative fellow travellers identify the Spanish left as the main cause of the civil war (1936–1939) that culminated in the establishment of the Franco dictatorship. Such claims are possible because these historians distort both the history of the left and the nature of social protest and mass mobilisation during these years. In part, the reliance of Neo-Revisionist/conservative historians on the methods of traditional political history – combined with their stubborn aversion to social history – makes it impossible for them to understand the left. This article argues that only through social history is it possible to comprehend the complex and shifting nature of protest dynamics in the 1930s. Indeed, many of the conflicts that played out in the political arena during these years were conditioned by structural economic problems and social tensions that resulted in diverse forms of radical contestation among the grassroots of leftist movements. Social, and indeed cultural history, are, therefore, central to any analysis of the myriad forms of these protest energies that flowed from the bottom up to shape the orientation of the leftist organisations.  相似文献   
36.
以脾单个核细胞总RNA为模板,对鸡白细胞介素-2受体基因γ链(chIL-2Rγ)进行了RT-PCR,获得了一1 047 bp的开放阅读框,编码由348个氨基酸残基组成的分子质量为37.8 ku的蛋白多肽。预测的鸡IL-2Rγ多肽链中包含4个保守半胱氨酸残基、1个WSXWS基序和7个N连接的糖基化位点。鸡IL-2Rγ与其他动物IL-2Rγ在氨基酸水平上的同源性仅为21.4%~38.2%。RT-PCR检测发现,鸡IL-2RγmRNA分布于大脑、小脑、脊髓、腔上囊、脾、胸腺、骨髓、盲肠扁桃体、腺胃、肌胃、空肠、卵黄囊憩室、回肠、盲肠、直肠、心脏、肾、肺、肝、骨骼肌和皮肤,而在十二指肠和睾丸中没有检测到其转录。构建了鸡IL-2Rγ胞外区的原核重组表达载体,进行了表达和鉴定。  相似文献   
37.
目的 了解血瘀证在社区2型糖尿病患者中的分布及其相关影响因素。 方法 以社区901例2型糖尿病患者为研究对象,采集其相关临床信息并进行中医辨证分析,采用单因素分析和Logistic回归分析考察血瘀证的影响因素。 结果 901例2型糖尿病患者中,单纯血瘀脉络证165例,阴虚热盛证、湿热困脾证、气阴两虚证、阴阳两虚证分别为137、135、334、130例,分别兼夹血瘀证55、57、200、101例,各证型兼夹血瘀证的比例明显不同(P<0.05)。单因素分析结果显示,年龄、病程、高血压并发症、收缩压、体质量、体型是血瘀证的影响因素,舒张压、血脂水平不是血瘀证的影响因素;二项分类Logistic回归分析结果显示,年龄、高血压并发症、收缩压是血瘀证的影响因素。 结论 血瘀证是社区2型糖尿病患者的主要证型,年龄越大,具有高血压并发症,收缩压较高者易于出现血瘀证,尚不能认为病程、体质量和体型是2型糖尿病血瘀证的影响因素。  相似文献   
38.
对1日龄SPF雏鸡人工感染网状内皮组织增殖病病毒(REV)后,胸腺T淋巴细胞白细胞介素2(IL-2)诱生活性于14~49 d极显著低于对照组(P<0.01);脾T淋巴细胞IL-2诱生活性于14 d明显低于对照组(P<0.05),感染后21~49 d极显著降低(P<0.01);脾淋巴细胞干扰素(IFN)的诱生活性于感染后7~49 d极显著降低(P<0.01).提示SPF雏鸡受REV感染后机体免疫器官的分子免疫调节机能明显降低或发生障碍.  相似文献   
39.
甲基安非他命(冰毒)诱导基因表达变化研究进展   总被引:1,自引:0,他引:1  
Yang J 《法医学杂志》2004,20(3):185-188
甲基安非他命进入机体后,其最根本的变化是引起了成瘾者许多基因转录和表达改变。这些基因包括与神经元损害有关的基因、与日节律有关的基因、与行为异常有关的基因及其它一些无法分类的基因。它们基因转录和表达水平增高或者降低引起了甲基安非他命成瘾者各种临床表现。研究这些基因表达可以为法医学鉴定提供依据。  相似文献   
40.
Xia SX  Gao YZ  Bian SZ  Wang Z  Zhang Z  Bu M  Zhang J 《法医学杂志》2004,20(4):200-201,204
目的研究D2S1399和D5S2500基因座在中国华东地区汉族群体遗传多态性。方法应用PCR、聚丙烯酰胺垂直电泳及银染技术检测D2S1399和D5S2500基因座的遗传多态性。结果D2S1399和D5S2500基因座在中国华东汉族群体分别检出11个和9个等位基因,其观察杂合度(Ho)分别为0.745和0.807,多态信息含量(PIC)分别为0.850和0.750,个体识别能力(DP)分别为0.958和0.917,非父排除率(PE)分别为0.554和0.643。结论D2S1399和D5S2500两个基因座是高度多态性STR基因座,在法医学中有重要应用价值。  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