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   629篇
  免费   55篇
各国政治   10篇
世界政治   9篇
外交国际关系   54篇
法律   452篇
中国共产党   6篇
中国政治   6篇
政治理论   77篇
综合类   70篇
  2024年   4篇
  2023年   11篇
  2022年   8篇
  2021年   19篇
  2020年   39篇
  2019年   34篇
  2018年   30篇
  2017年   14篇
  2016年   12篇
  2015年   18篇
  2014年   33篇
  2013年   21篇
  2012年   24篇
  2011年   23篇
  2010年   29篇
  2009年   60篇
  2008年   87篇
  2007年   110篇
  2006年   32篇
  2005年   10篇
  2004年   16篇
  2003年   10篇
  2002年   8篇
  2001年   4篇
  2000年   6篇
  1999年   1篇
  1997年   2篇
  1996年   2篇
  1994年   2篇
  1992年   5篇
  1991年   1篇
  1990年   2篇
  1989年   5篇
  1984年   2篇
排序方式: 共有684条查询结果,搜索用时 46 毫秒
51.
Seismologists have reported that a majority of recent earthquakes in Oklahoma have been triggered by the activities of oil and gas companies. Despite this fact, there is evidence of strong opposition toward earthquake mitigation policy. In this article, we argue that how individuals define issues affect their policy choice. Furthermore, we incorporate the concept of venue shopping from the literature on macro theories of the policy process to investigate the effect of problem definition in shaping individual venue preference for policy choice. Using unique survey data, we find that problem definition, particularly issue causality and issue image, is strongly related to individual support for earthquake mitigation policy. However, a more nuanced relationship between individual problem definition and venue preference is observed. Our findings contribute to scholarly endeavors to understand the politics of problem definition at an individual level, which may be the precursor of understanding policy choices at the institutional level.  相似文献   
52.
Since its inception in 2009, Uber has grown into a technology behemoth, with operations in over 70 countries and 500 cities around the world. Along the way, it has successfully forced regulatory upheaval in hundreds of local taxi markets controlled by municipal authorities. In this sense, Uber is not only a market disruptor, but also a policy disruptor. This paper examines the nature of such policy disruption at the local level by reviewing regulatory responses to Uber in ten North American cities. We find that regulatory outcomes are a function of two factors: Uber’s government relations strategy, either cooperative or confrontational, and the degree to which local governments perceive Uber as complementary or harmful to the existing marketplace. We conclude by proposing a typology of regulatory responses to Uber as a basis to identify patterns in the behavior of municipal regulatory authorities and political leaders.  相似文献   
53.
Over the past decade, directional drilling and hydraulic fracturing enabled an unconventional oil and gas extraction (UOGE) boom in many regions of the United States, including parts of Pennsylvania. This revolution has created serious concerns about the capability of existing institutions to govern important societal outcomes associated with UOGE. We present a conceptual framework for assessing key societal outcomes influenced by UOGE governance. In applying this framework to Pennsylvania, we discern certain institutional strengths that have allowed the Commonwealth to reap appreciable short‐term economic growth from rich resource endowments. We also find, however, that several institutional weaknesses have allowed costs externalized to the environment, public health, and community integrity to offset some proportion of those economic benefits. Likewise, we find that governance of UOGE in Pennsylvania has contributed to a bifurcated sociopolitical landscape wherein adversarial coalitions dispute the legitimacy of the industry and its governance.  相似文献   
54.
东亚合作的现状与未来   总被引:17,自引:0,他引:17  
10+3合作是东亚合作的主渠道,在世界各地区合作中独树一帜。经过几年来的发展,这种合作已取得显著进展,且打下了坚实基础。10+3合作势头良好,但未来发展仍面临一些问题。中国是10+3的重要一员,10+3的发展对中国具有十分重要的意义。  相似文献   
55.
56.
本文观察了不同温度条件下,人血中C_3转化率的变化情况。在14个尸解案例中,根据C_3转化率和尸体肛温推断死亡时间,其95%可信区间为±11小时。测定C_3转化率的同时,还可以观察C_3的表型,为无名尸体的个人识别提供依据。  相似文献   
57.
根据定点突变原理获得了包含口蹄疫病毒P1、2A、3C、3D及部分 2B编码区的目的基因片段 ,经SpeⅠ和HindⅢ双酶切后 ,与经相同方法处理的杆状病毒转移载体 pFastBacHT连接 ,得到了重组质粒 pFB P12X3C3D。经酶切和测序鉴定后 ,将其转化入含穿梭载体Bacmid的感受态细胞DH10Bac ,经抗性及蓝白斑筛选 ,得到了含P12X3C3D多基因的重组穿梭载体 ,将其命名为Bacmid P12X3C3D ;提取其DNA并转染Sf9昆虫细胞 ,最后获得含口蹄疫病毒P12X3C3D多基因的重组杆状病毒。  相似文献   
58.
《Science & justice》2021,61(6):669-677
In forensic identification, the use of foot dimensions to predict stature is a requisite. For Taiwanese male stature prediction, available information about stature estimation using foot dimensions is still lacking. Therefore, the primary purpose of this study was to establish Taiwanese adult male stature prediction models for various foot dimensions. A total of 2,072 male 3D foot models were collected and the subjects' ages ranged from 18 to 59 years old. Thirteen foot dimensions for each foot were utilized in this study. Bilateral differences were tested using paired t-tests. Stature predictions based on different foot dimensions were conducted using simple linear and stepwise regression methods. The results showed significant bilateral differences in the majority of the selected foot dimensions (p < 0.001). Foot length had the highest positive correlation with stature in the right and left foot. Using length-related dimensions generated better prediction accuracy (0.356 < R2 < 0.533, 4.193 < SEE < 4.928), whereas the worst accuracy was observed with angle-related dimensions (0.001 < R2 < 0.023; 6.072 < SEE < 6.137) when employing a single foot dimension to estimate Taiwanese male stature. Stepwise regression analysis results indicated that the coefficient of determination was improved to 0.590 and 0.593 by applying five and six foot parameters to predict stature, respectively. The findings of the present study suggest that these stature estimation equations can be applied to predict Taiwanese male stature in the forensic science field.  相似文献   
59.
李陶 《科技与法律》2015,(2):322-338
3D打印技术作为工业4.0中实现"智能生产"和"智能工厂"的方式,是促进我国制造业转型的重要路径。通过对德国政府应对3D打印技术发展所制订的科技政策和法律政策的分析,欲促进我国3D打印技术快速发展,提升我国3D打印产业的国际竞争力,首先,应通过制定和完善与3D打印有关的科技政策,引导科研资源和资本向3D打印产业分流;其次,应通过对现行相关法律的解释、归纳和演绎,寻求应对3D打印技术发展的法律适用的空间;此外,在政策的制定与法律适用的过程中,需要选择符合我国国情的3D打印技术保护标准和创新发展之路径。  相似文献   
60.
3D打印作为一种快速成型技术,近年来发展迅速,有着良好的发展前景与应用空间。然而技术革新的背后潜在隐藏着知识产权、刑事犯罪以及人类伦理等多方面的安全风险,利用法律、政策规制3D打印技术迅猛发展可能带来的安全风险,既是保障社会治安管理秩序的关键,更是3D打印技术进一步发展与革新的前提与基础。  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