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   435篇
  免费   30篇
各国政治   15篇
工人农民   76篇
世界政治   23篇
外交国际关系   30篇
法律   252篇
中国政治   6篇
政治理论   63篇
  2023年   3篇
  2022年   10篇
  2021年   7篇
  2020年   16篇
  2019年   23篇
  2018年   26篇
  2017年   37篇
  2016年   37篇
  2015年   21篇
  2014年   34篇
  2013年   75篇
  2012年   21篇
  2011年   16篇
  2010年   18篇
  2009年   17篇
  2008年   18篇
  2007年   12篇
  2006年   10篇
  2005年   9篇
  2004年   4篇
  2003年   4篇
  2002年   3篇
  2001年   4篇
  2000年   4篇
  1999年   6篇
  1998年   2篇
  1997年   2篇
  1996年   3篇
  1995年   1篇
  1994年   1篇
  1993年   1篇
  1990年   1篇
  1988年   3篇
  1987年   1篇
  1985年   7篇
  1984年   4篇
  1983年   1篇
  1982年   1篇
  1979年   1篇
  1977年   1篇
排序方式: 共有465条查询结果,搜索用时 15 毫秒
131.
Three commercially available integrated rapid DNA instruments were tested as a part of a rapid DNA maturity assessment in July of 2018. The assessment was conducted with sets of blinded single-source reference samples provided to participants for testing on the individual rapid platforms within their laboratories. The data were returned to the National Institute of Standards and Technology (NIST) for review and analysis. Both FBI-defined automated review (Rapid DNA Analysis) and manual review (Modified Rapid DNA Analysis) of the datasets were conducted to assess the success of genotyping the 20 Combined DNA Index System (CODIS) core STR loci and full profiles generated by the instruments. Genotype results from the multiple platforms, participating laboratories, and STR typing chemistries were combined into a single analysis. The Rapid DNA Analysis resulted in a success rate of 80% for full profiles (85% for the 20 CODIS core loci) with automated analysis. Modified Rapid DNA Analysis resulted in a success rate of 90% for both the CODIS 20 core loci and full profiles (all attempted loci per chemistry). An analysis of the peak height ratios demonstrated that 95% of all heterozygous alleles were above 59% heterozygote balance. For base-pair sizing precision, the precision was below the standard 0.5 bp deviation for both the ANDE 6C System and the RapidHIT 200.  相似文献   
132.

Critics of neoliberalism argue that so-called meritocratic and identity-neutral social policies and political positions actually reinforce and exacerbate intersecting inequalities, namely racism, sexism, heterosexism, classism, and ethnocentrism/xenophobia. The purpose of these studies was to develop and initially validate a scale of neoliberal attitudes from a wide range of existing instruments that reflect anti-neoliberal theory. A series of three studies resulted in a 25-item instrument—the Anti-Neoliberal Attitudes Scale (ANAS)—that exhibits initial evidence of construct validity, internal consistency, and test–retest reliability. Exploratory factor analysis with students from two universities revealed a four-factor structure of Racism and Sexism Awareness, Communitarian Values, Multicultural Ideology, and Inequality Consciousness. However, a confirmatory factor analysis with an independent sample of undergraduate students suggests a bifactor model in which the general factor explains most of the variance and that the instrument should be treated as a single scale, rather than independent subscales. Significant correlations with measures of right-wing authoritarianism and social dominance orientation suggest convergent validity. Temporal stability was established via a test–retest analysis in an independent sample of undergraduate students. Finally, responses from a sample of MTurk workers provided evidence of the ANAS’s incremental validity when compared to an existing measure of neoliberal beliefs. Implications for future empirical work on the psychological dimensions of neoliberalism are discussed.

  相似文献   
133.
The purpose of this study was to determine whether aspects of conscience cohere into broader dimensions and to examine how these broader dimensions of conscience relate to parenting, temperament, and social behavior. One hundred and thirteen adolescents (M age = 15.88 years, 51% female) completed measures of sympathy, guilt, empathic anger, shame, moral reasoning, and internalization. Factor analyses revealed two dimensions of conscience: moral affect (which included guilt, shame, sympathy, and empathic anger) and moral cognition (which included internalization and prosocial moral reasoning). Parental discipline related to both dimensions of conscience, albeit in different ways. High levels of parental inductive discipline and low levels of parental power assertion were associated with high levels of moral affect, whereas high levels of persistent discipline were associated with increased moral cognition. High negative reactivity, however, was only associated with high levels of moral affect. In general, higher levels of moral affect were associated with prosocial behavior and moral conduct during bullying. Higher levels of moral cognition were associated with less participation in bullying, more altruistic behavior, and more frequent helping of the victims of bullying. The discussion focuses on the dimensions of moral conscience in adolescence.
Gustavo CarloEmail:
  相似文献   
134.
A common challenge faces development organisations, from the highest policy-making circles to local, grassroots organisations: how to work with other groups to build stronger partnerships and achieve consensus on goals? This article describes the Net-Map Toolbox, a new tool which builds and expands upon existing social-networking approaches. The article highlights the experience of using the Toolbox with the White Volta Basin Board in Ghana, a multi-stakeholder organisation responsible for overseeing local water resources. The authors discuss how the Net-Map Toolbox can assist members of development-oriented organisations to better understand and interact with each other in situations where many different actors can influence the outcome.  相似文献   
135.
136.
137.
A 60 bp sequence variation hotspot in the canine mitochondrial DNA hypervariable region 1 was evaluated for its use in forensic investigations. Nineteen haplotypes containing 18 single nucleotide polymorphisms were observed among laboratory-generated and GenBank-derived domestic dog sequences representing five regional localities in the U.S. Samples from the different localities were highly variable with the levels of intra-population variability being similar among the populations studied. AMOVA further confirmed that there was no significant genetic structuring of the populations. Assays using these haplotypes were robust, canid specific and portend a rapid method for correctly excluding individual dogs as noncontributors of forensic evidence. Species-specificity of the primers was confirmed by means of in-tube polymerase chain reaction of human and cat DNA and in-silico assessment of the genomes of several animal species. Breed-specific fragments were not detected among the common haplotypes but there is evidence that this assay may be capable of differentiating domestic dog, wolf, and coyote sequences.  相似文献   
138.
The protection of human subjects in biomedical research relies on two principal mechanisms: assessing and comparing the risks and potential benefits of proposed research, and obtaining potential subjects' informed consent. While these have been discussed extensively in the literature, no attention has been paid to whether the processes should be different when the objective of an experimental biomedical intervention is to improve individual appearance, performance, or capability ("enhancement research") rather than to prevent, cure, or mitigate disease ("health-oriented research"). This essay examines this question in order to ensure that subjects in biomedical enhancement research receive adequate protection.  相似文献   
139.
140.
Using a rich data set of all SAT test takers from the 2004 through 2008 high school graduation cohorts, we investigate the impact of state‐specific school age‐of‐entry laws on students’ pathways into and through college. We document that these laws do not impact the probability that a student takes the SAT; however, we find strong evidence that students who are expected to be the oldest in their school cohorts based on their state residency and birthdays have a greater probability of taking an Advanced Placement (AP) exam and tend to take more AP exams. We also find that relatively younger students are more likely to attend two‐year colleges before attending four‐year colleges and are less likely to have earned bachelor's degrees four years beyond high school graduation, but eventually catch up to their older peers six years beyond high school graduation.  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