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   2001篇
  免费   532篇
各国政治   389篇
工人农民   88篇
世界政治   280篇
外交国际关系   112篇
法律   898篇
中国政治   39篇
政治理论   692篇
综合类   35篇
  2023年   7篇
  2022年   3篇
  2021年   35篇
  2020年   48篇
  2019年   175篇
  2018年   114篇
  2017年   157篇
  2016年   175篇
  2015年   150篇
  2014年   137篇
  2013年   581篇
  2012年   107篇
  2011年   103篇
  2010年   116篇
  2009年   52篇
  2008年   83篇
  2007年   50篇
  2006年   50篇
  2005年   46篇
  2004年   46篇
  2003年   37篇
  2002年   34篇
  2001年   12篇
  2000年   17篇
  1999年   12篇
  1998年   14篇
  1997年   14篇
  1996年   13篇
  1995年   12篇
  1994年   12篇
  1993年   18篇
  1992年   10篇
  1991年   8篇
  1990年   9篇
  1989年   6篇
  1988年   8篇
  1987年   4篇
  1986年   6篇
  1985年   6篇
  1984年   9篇
  1983年   6篇
  1982年   2篇
  1981年   6篇
  1980年   6篇
  1979年   4篇
  1978年   5篇
  1977年   4篇
  1976年   1篇
  1974年   2篇
  1968年   1篇
排序方式: 共有2533条查询结果,搜索用时 15 毫秒
31.
32.
The non‐legal factors that influence judicial decisions have been the subject of extensive debate. Theoretical and empirical work has focused on factors including political ideology, activism, attitudes, and demographics. Personal values are related to these factors and are central to decision making. The study described in this article translated theories and techniques from psychological research to examine the role of personal values in judicial decision making. A novel method of assessment of value expression in legal opinions revealed a different pattern of values expressed in the majority and minority opinions of a case that divided the Supreme Court. An empirical study of legal academics extended this analysis and highlighted the significant influence of personal values on legal decisions. The value:decision paradigm provides a new framework to analyse judicial decision making, judicial division, and judicial discretion and has significant implications for judicial diversity.  相似文献   
33.
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   
34.
35.
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   
36.
37.
ABSTRACT

“America First,” as presented by President Trump, argues for an international strategy that persistently places America’s interests above those of anyone or anything else. Consequently, Trump has reshaped the international perceptions of the United States and has created more difficulties for the U.S. in coordinating of global leaders in resolving complex issues in the world. This essay reflects on how Trump and the United States are viewed internationally, the impacts of Trump’s anti-immigrant and pro-White nationalist rhetoric, Trump’s responses to humanitarian crises around the globe, and the potential impact of Trump’s stance on global climate change. Given these considerations, it is questionable whether “America First” policy has made “America Great Again” in the eyes of the world.  相似文献   
38.
39.
40.
Abstract

In an effort to popularise the gas stove, boost sales and minimize the genuine and perceived dangers of using this volatile domestic appliance, late Victorian gas managers and stove manufacturers employed female cookery teachers to perform public demonstrations at trade exhibitions throughout the country. Eventually, these women comprised a special department of gas sales, calling directly on customers in their homes to offer personal instruction in the proper use and care of gas stoves. Part social workers, part salesgirls, the ‘lady demons’, short for lady demonstrators, moved between the traditionally gendered separate spheres of work and home, consciously constructing a professional image that reconciled the social tensions of this new occupation. They offer an early example of women's entrance into the corporate business world, the feminisation of consumption, and the combination of customer service with social welfare.  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