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   4726篇
  免费   335篇
各国政治   83篇
工人农民   97篇
世界政治   145篇
外交国际关系   330篇
法律   2403篇
中国共产党   46篇
中国政治   504篇
政治理论   515篇
综合类   938篇
  2024年   9篇
  2023年   94篇
  2022年   86篇
  2021年   111篇
  2020年   206篇
  2019年   142篇
  2018年   198篇
  2017年   218篇
  2016年   196篇
  2015年   127篇
  2014年   288篇
  2013年   454篇
  2012年   322篇
  2011年   295篇
  2010年   217篇
  2009年   274篇
  2008年   283篇
  2007年   296篇
  2006年   247篇
  2005年   229篇
  2004年   201篇
  2003年   157篇
  2002年   119篇
  2001年   101篇
  2000年   56篇
  1999年   32篇
  1998年   12篇
  1997年   7篇
  1996年   5篇
  1995年   20篇
  1994年   5篇
  1993年   3篇
  1992年   9篇
  1991年   4篇
  1990年   4篇
  1989年   2篇
  1988年   3篇
  1987年   6篇
  1986年   9篇
  1985年   5篇
  1984年   3篇
  1983年   6篇
排序方式: 共有5061条查询结果,搜索用时 31 毫秒
91.
目的分析二轮摩托车交通事故的现场特点和驾乘人员的损伤特征,为甄别摩托车驾乘人员提供信息。方法收集本区2005年至2014年142例二轮摩托车交通事故人员伤亡资料,包括事故经过、事故类型、现场特点、车辆特点、驾乘人员情况、损伤情况及死亡原因等相关资料,进行分析总结。结果二轮摩托车驾乘人员在各类型事故中的损伤部位和特征、出现率及严重程度有明显的区别,事故现场有规律性。结论通过现场与人体损伤特征的分析,可以甄别摩托车驾乘人员。  相似文献   
92.
The big data era has a high impact on forensic data analysis. Work is done in speeding up the processing of large amounts of data and enriching this processing with new techniques. Doing forensics calls for specific design considerations, since the processed data is incredibly sensitive. In this paper we explore the impact of forensic drivers and major design principles like security, privacy and transparency on the design and implementation of a centralized digital forensics service.  相似文献   
93.
Abstract

While many studies have identified an association between social class and economic preferences, we know little about the implications of changes in class location for these preferences. This article assesses how social class and intra-generational class mobility affect economic preferences drawing on longitudinal data from the British Household Panel Survey. In doing so, the article adopts a post-industrial perspective that considers horizontal and vertical class divisions. Even when time-invariant characteristics of individuals are kept constant (through fixed-effects estimation), it is found that both vertical and horizontal class location explain economic preferences. Thus, these estimations suggest that social class moulds preferences, even when accounting for factors that can lead to selection into classes. Moreover, people who change classes hold different economic preferences than their peers in the class of origin, but do not completely assimilate into their class of destination. This implies that growing intra-generational class mobility could undermine the class basis of political conflict.  相似文献   
94.
High‐throughput sequencing (HTS) of large panels of single nucleotide polymorphisms (SNPs) provides an alternative or complimentary approach to short tandem repeats (STRs) panels for the analysis of complex DNA mixture forensic samples. For STRs, methods to estimate individual contribution concentrations compare capillary electrophoresis peak heights, peak areas, or HTS allele read counts within a mixture. This article introduces three approaches (mean, median, and slope methods) for estimating individual DNA contributions to forensic mixtures for HTS/massively parallel sequencing (MPS) SNP panels. For SNPs, the major:minor allele ratios or counts, unique to each contributor, were compared to estimate contributor proportion within the mixture using the mean, median, and slope intercept for these alleles. The estimates for these three methods were typically within 5% of planned experimental contributions for defined mixtures.  相似文献   
95.
The role of civil society organizations (CSOs) as a watchdog in the implementation process is widely acknowledged. However, little is known about what determines their capacity to monitor EU policy implementation and how it differs across member states. This article accounts for social capital as well as human and financial capital to determine the monitoring capacity of CSOs. To capture sources of social capital, a network analysis is applied in a comparative case article on the monitoring networks of national platforms of the European Women’s Lobby across eight EU member states. The analysis reveals that CSOs in western member states are rich in human, financial and social capital, while CSOs in CEE member states compensate for this lack of resources by linking up with the Commission.  相似文献   
96.
EU issue voting in European Parliament elections has been shown to be highly conditional upon levels of EU politicization. The present study analyzes this conditionality over time, hypothesizing that the effect of EU attitudes on EP vote preferences is catalyzed as EP elections draw closer. In contrast to extant cross-sectional post-election studies, we use a four-wave panel study covering the six months leading up to the Dutch EP elections of 2014, differentiating between party groups (pro, anti, mixed) and five EU attitude dimensions. We find that EU issue voting occurs for both anti- and pro-EU parties, but only increases for the latter. For mixed parties we find no effect of EU attitudes, yet their support base shifts in the anti-EU direction as the elections draw closer. The overarching image, however, is one of surprising stability: EU attitudes form a consistent part of EP voting motivations even outside EP election times.  相似文献   
97.
98.
社会保障权责配置有政府与市场和政府间之横纵两个层级。滞后的社会保障法制导致权责横纵配置的失衡-政府与市场之间配置的偏倚,政府之间配置的粗疏,这严重制约该制度功效的彰显。横向配置矫正的关键在于寻求政府责任的确定性与实现方式的多样性之间的平衡,并在发挥政府基础性作用时,倡导个人责任的回归、市场机制的引进及民间力量的渗透。纵向关系的细化要求以宪法层面原则性规定与法律层面具体性条款相结合的方式进一步规范各级政府的事权及其支出责任;从责任分担上做出更具操作性的制度安排,完善政府间社会保障支出责任分担法律机制。  相似文献   
99.
100.
Using the Princeton nuptiality index Im, we analyzed historical developments in the proportion of married women of reproductive age in Spain. We show the internal diversity in nuptiality patterns and offer an explanatory statistical model based on panel data analysis to identify the main variables influencing these changes over more than a century (1887–1991). We found that Spain has been the developed country with the greatest contrasts in its provincial nuptiality patterns (measured by Im), although this diversity has lessened over the course of time. We also found that some socioeconomic variables (the gross domestic product per capita and the percentage of population living in cities) do not have a linear relationship with female nuptiality but rather have a U shape or an inverted U shape. This may partly account for some of the controversy that has raged on this topic over the past few decades on an international level.  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