全文获取类型
收费全文 | 485篇 |
免费 | 28篇 |
专业分类
各国政治 | 40篇 |
工人农民 | 44篇 |
世界政治 | 43篇 |
外交国际关系 | 32篇 |
法律 | 277篇 |
中国政治 | 2篇 |
政治理论 | 74篇 |
综合类 | 1篇 |
出版年
2023年 | 4篇 |
2022年 | 4篇 |
2021年 | 9篇 |
2020年 | 22篇 |
2019年 | 12篇 |
2018年 | 17篇 |
2017年 | 25篇 |
2016年 | 31篇 |
2015年 | 17篇 |
2014年 | 21篇 |
2013年 | 60篇 |
2012年 | 28篇 |
2011年 | 11篇 |
2010年 | 13篇 |
2009年 | 19篇 |
2008年 | 16篇 |
2007年 | 19篇 |
2006年 | 22篇 |
2005年 | 19篇 |
2004年 | 13篇 |
2003年 | 22篇 |
2002年 | 26篇 |
2001年 | 12篇 |
2000年 | 11篇 |
1999年 | 6篇 |
1998年 | 8篇 |
1997年 | 6篇 |
1996年 | 1篇 |
1995年 | 3篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1991年 | 1篇 |
1989年 | 3篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1975年 | 1篇 |
1974年 | 4篇 |
1972年 | 1篇 |
1970年 | 2篇 |
排序方式: 共有513条查询结果,搜索用时 31 毫秒
141.
ABSTRACTThe semantics of cultural diversity, based on the political discourses of immigration as they appear in integration and anti-racist policies in Andalusia, underline the sense of Otherness of immigrant groups. In this article, Castaño, Martínez and Periáñez focus on the most relevant texts in the Planes Integrales para la Inmigración en Andalucía (Comprehensive Plans for Immigration in Andalusia). To date, these texts have formed the most significant discursive framework for representations of the third sector, trade unions and public agencies involved in the management of diversity. The key ideas in the plans revolve around transnational political references in the context of the European Union (EU). They impose a sense of Europeanness on Andalusia that is in opposition to its historical heritage, endogenous diversity and cultural specificity, and thus steer the imaginary of Andalusia's identity towards a Eurocentric idea that enhances the region's peripheral position. Immigration is regarded in the hegemonic media discourse and the social imaginary as a risk and a social problem. Integration policies, despite being couched in anti-racist rhetoric, are specifically targeted at immigrants, further enhancing the idea of Otherness. The notion of interculturality is the leitmotiv of these policies. In practical terms, however, action is limited to empty measures in the field of education. These policies, in sum, neutralize, rather than reinforce, the sense of equality on which interculturality is based. The examination of the intertextuality of Andalusian, Spanish and European discourses reveals the conformity of the discourse of Andalusia's coloniality within the framework of the EU. 相似文献
142.
We estimate the impact of having attended centre-based daycare institutions during early childhood on math test scores at the fourth grade level of elementary school. We find evidence that daycare attendance has a net impact on math proficiency, and that the effects are heterogeneous. The effect of daycare and kindergarten attendance on proficiency varies according to mother’s education. The effects of the impact of daycare vary from ?0.28 standard deviation for mothers with no education to 0.42 standard deviation for mother’s with college or more. 相似文献
143.
Celso C. Tavares Leonor Gusmão Patrícia Domingues Juliana Aquino António Amorim Elizeu F. de Carvalho 《Forensic Science International: Genetics Supplement Series》2008,1(1):164-166
This study presents data for the X-chromosome STR loci DXS7133, DXS7424, DXS8378, DXS6807, DXS7423 and DXS8377. In order to establish a database, unrelated individuals (males and females) from Rio de Janeiro were typed for the above loci. No significant differences were observed between allele frequencies in male and female samples (non-differentiation exact P values ≥ 0.156). Hardy-Weinberg equilibrium was tested in the female sample and no significant deviations were found. All six markers have shown to be highly polymorphic in our sample with gene diversities varying between 0.6797 for DXS7133, and 0.9260 for DXS8377. Pairwise linkage disequilibrium analysis did not allow discharging a possible association between DXS7133 and DXS7424 alleles in Rio de Janeiro population. Parameters of forensic interest, like PDM, PDF, Hetobs, Hetexp, were calculated for each locus. The high discrimination power estimated in both males and females, as well as mean exclusion chance in father/daughter duos and in father/mother/daughter trios, demonstrates the usefulness of these six markers in forensic investigation. 相似文献
144.
Alfredo Gusmão Verónica Gomes António Amorim Maria João Prata 《Forensic Science International: Genetics Supplement Series》2008,1(1):212-213
We analyzed 17 Y-chromosomal STR loci in a population sample of 126 unrelated Portuguese Gypsies. Fifty three different haplotypes were found, three represented with considerable high frequencies (≥8.7%). The percentage of unique haplotypes (71.2%) was rather low as well as haplotype diversity (94.37%). In the comparison with available Portuguese population data and with those from other Gypsy and general population samples from Bulgaria, Lithuania and Spain, our sample showed significant differences in comparison with the general population data from Portugal, Spain and Bulgaria. Significant differences were observed with Bulgarian Gypsies, but not with the Spanish or Lithuanian groups. The Gypsy populations from Portugal, Spain and Bulgaria were found to be more closely related to each other than with the general population from their own countries. 相似文献
145.
146.
147.
THE NUMBER AND SIZE OF GOVERNMENT DEPARTMENTS 总被引:1,自引:0,他引:1
148.
Robert R. Smith o̊Training Coordinator John M. McKee o̊Executive Director Michael A. Milan o̊Research Pychologist 《Journal of criminal justice》1974,2(4):357-363
The results of a survey conducted to determine the extent and effectiveness of present correctional study-release programs and policies are presented, and direction is offered for the expansion of such programs based on current practices. 相似文献
149.
150.
We suggest the use of the mismatch distribution methodology as an easy way to estimate the distance between all pairs of haplotypes present in a sample. This approach allows the evaluation of the proportion of pairs of Y-STR haplotypes that are prone to become identical by state (IBS), in one generation, by recurrent mutation, a statistic of major importance in the forensic field. The mismatch approach presents some advantages alternatively to the empirical one, since it is not necessary to have simultaneous information on STRs and SNPs, and it allows the evaluation of IBS also within-haplogroups. The estimation of IBS at an European scale showed that there is a high population substructuring for this parameter, increasing from southern-central European countries towards west and north, in accordance to what was found for Y-biallelic markers. This result seems to imply a more careful use of large databases for matching evaluation, even in the absence of population structure for general Y-STR diversity. Furthermore, mismatch distribution can be used to measure the distance between a particular haplotype and all the haplotypes in a sample. When applied to the most frequent haplotypes in Europe it revealed that the opportunity for IBS is not directly related to the frequency of a haplotype, but highly dependent on the proportion of neighbouring haplotypes--so, that reporting on the haplotype frequency for evaluating the significance of a match can be misleading. 相似文献