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   260篇
  免费   36篇
各国政治   7篇
工人农民   1篇
世界政治   4篇
外交国际关系   13篇
法律   191篇
中国政治   25篇
政治理论   20篇
综合类   35篇
  2023年   6篇
  2022年   2篇
  2021年   4篇
  2020年   16篇
  2019年   7篇
  2018年   9篇
  2017年   4篇
  2016年   17篇
  2015年   22篇
  2014年   19篇
  2013年   25篇
  2012年   28篇
  2011年   17篇
  2010年   13篇
  2009年   12篇
  2008年   15篇
  2007年   22篇
  2006年   18篇
  2005年   7篇
  2004年   7篇
  2003年   5篇
  2002年   3篇
  2001年   6篇
  2000年   8篇
  1999年   2篇
  1998年   1篇
  1987年   1篇
排序方式: 共有296条查询结果,搜索用时 15 毫秒
1.
李桁 《思想战线》2002,28(3):111-116
文化研究的基本思路大致可以这样概括 :1 文化首先是一个特定群体共同拥有的意义系统 ,它最基本的功能就是确立和强化一个特定群体 ;文化发展的途径是通过个体与群体的冲突 ,生成新的符号系统 ,乃至生成新的内在法则。 2 文化是一个开放的能量交换系统 ,它服从于热力学第一定律和热力学第二定律 ;任何文化现象都是直接或间接地根据这两个定律服务于能量的转换 ;心理能量是能量摄取和转换水平的关键 ,但是心理能量的开发不是技术性的 ,而是象征性的。 3 人文科学的非线性特征 ,要求田野工作应该是一个多学科专家共同参与进行的系统工程  相似文献   
2.
目的建立泥土中植物花粉的提取和检验方法。方法用去二甲苯、18%盐酸溶液处理提取泥土中的花粉 ,然后用扫描电镜进行检验。结果从不同的泥土中检出不同花粉。结论本方法能有效分离提取泥土中花粉。对其它混合物中花粉的提取有参考价值。本文介绍一种泥土中花粉提取的简捷方法 ,以及利用扫描电镜 /能谱仪对提取的植物花粉进行检验的方法。  相似文献   
3.
研究胚兔的牙囊发育生物行为与人的牙囊发育是否相似 ,为人口腔疾病的研究提供模拟实验动物模型 ,采用光镜、电镜及激光扫描共聚焦显微镜对 4 3只胚兔的牙囊发育过程进行形态学观察。结果显示 ,牙囊来源于外胚间质 ,通过胚胎诱导形成牙支持组织 ,分化产生成牙骨质细胞、成骨细胞、成纤维细胞 ,形成牙骨质、固有牙槽骨、牙周韧带及其基质 ,对牙齿发育阶段具有保护和稳定作用 ,调控未来形成的牙周结构 ,在早期发育阶段首先出现 ,与人牙囊发育基本相似 ;最终牙囊在牙冠的顶部形成索引带 ,诱导继承牙萌出 ,在牙冠的根部形成牙支持组织 ,一部分牙囊细胞有程序性细胞死亡 ,以维持牙囊发育期内环境的生理平衡  相似文献   
4.
周期可变的交通灯自动管理   总被引:2,自引:0,他引:2  
对道路交通拥挤,秩序混乱,特别是交叉路口经常出现拥堵的情况,通过运用先进的计算机控制技术,可以从很大程度上解决这一突出问题,大大提高市区车辆通行能力,从而提高全社会的经济效益和社会效益。  相似文献   
5.
多相位信号灯的优化——可变车道灯的设置   总被引:2,自引:0,他引:2  
文章对多相位信号灯交叉路口的交通情况进行了简要分析,认为只有设置可变车道灯才可能解决平面交叉路口的拥堵问题.并对设置可变车道灯的可行性进行了分析.  相似文献   
6.
This article analyzes initiatives of Gerald Ford's presidential administration toward nationalities or the so-called white ethnics against the backdrop of the legacy of Richard Nixon and the Republican Party's ethnic politics of the 1960s. Using archival and interview materials, it demonstrates that Gerald Ford intended to improve the relationship between the President's office and the ethnics who were involved in the Republican Party's structures. He consciously tried to respond to ethnics’ political concerns and even created a special position on his staff for working with the nationalities. While in office and during the election campaign of 1976, Ford succeeded in engaging the ethnics and in demonstrating his will to address their needs on the domestic “front.” He failed, however, to fully appreciate the importance of foreign policy to the nationalities. The article proposes that today, as in the 1970s, the American political establishment would benefit from recognizing international issues as crucial elements of white ethnics’ or nationalities’ political behavior.  相似文献   
7.
The resilience of some high-profile white-collar criminals in the media gaze after prison may lead some to conclude, particularly as some research also supports this notion, that this group of offenders generally manages well after conviction. Research in this area is, however, small and largely American. The authors seek to add to this small body of research by offering findings on the impact of conviction on 17 UK convicted white-collar criminals after completion of their sentence. It provides a unique insight into the consequences of conviction, showing that although there were some offenders who did experience limited impact and coped well, there was also a significant group who suffered a decline in status, financial losses, negative media coverage, and relationship and mental health problems, to name some. The authors argue more research is needed on this group and their needs as they are often neglected by the criminal justice system.  相似文献   
8.
The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners.  相似文献   
9.
ABSTRACT

Growing in range and urgency, humanitarian needs now pose increasingly acute questions for national security policy formulation. Whether over forced migration, food scarcity or nefarious electronic penetration, state security preferences face uneasy accommodations with individual needs be it for child survival, basic sustenance or rights to privacy. This paper deliberates a further field of increasingly apparent value contest: that involving the transfer, diversion and lethal use of small arms and light weapons (SALW). After outlining the scale of this phenomenon, existing regulatory mechanisms over SALW transfers are assessed. It is argued that these controls are inadequate, a deficiency that is embedded within a range of inter-linked disjunctions. They are outlined in a model that is evaluated against empirical findings. Where SALW control inadequacy is causally connected to the disjunctive model, it is argued, current levels of SALW-induced casualties are unlikely to abate. The paper concludes by considering feasible options for enhanced management of global SALW proliferation.  相似文献   
10.
我国刑法将不履行债务行为犯罪化符合社会发展的现实需要,符合犯罪的本质属性,符合国外的相关立法例。但债务不履行行为的犯罪化并非无任何限制。应当遵循个别化原则,以债的履行为主要目的,对侵害涉共同利益和主流价值的债权行为加以规制,并配以轻刑。  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