全文获取类型
收费全文 | 1649篇 |
免费 | 74篇 |
专业分类
各国政治 | 93篇 |
工人农民 | 80篇 |
世界政治 | 129篇 |
外交国际关系 | 129篇 |
法律 | 848篇 |
中国政治 | 14篇 |
政治理论 | 416篇 |
综合类 | 14篇 |
出版年
2023年 | 18篇 |
2022年 | 18篇 |
2021年 | 14篇 |
2020年 | 36篇 |
2019年 | 49篇 |
2018年 | 53篇 |
2017年 | 62篇 |
2016年 | 74篇 |
2015年 | 41篇 |
2014年 | 61篇 |
2013年 | 239篇 |
2012年 | 60篇 |
2011年 | 51篇 |
2010年 | 47篇 |
2009年 | 50篇 |
2008年 | 68篇 |
2007年 | 76篇 |
2006年 | 56篇 |
2005年 | 66篇 |
2004年 | 57篇 |
2003年 | 50篇 |
2002年 | 53篇 |
2001年 | 26篇 |
2000年 | 25篇 |
1999年 | 29篇 |
1998年 | 29篇 |
1997年 | 16篇 |
1996年 | 11篇 |
1995年 | 26篇 |
1994年 | 16篇 |
1993年 | 11篇 |
1992年 | 24篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 17篇 |
1988年 | 15篇 |
1987年 | 12篇 |
1986年 | 12篇 |
1985年 | 12篇 |
1984年 | 9篇 |
1983年 | 14篇 |
1982年 | 9篇 |
1981年 | 6篇 |
1980年 | 12篇 |
1979年 | 6篇 |
1978年 | 6篇 |
1977年 | 8篇 |
1973年 | 6篇 |
1972年 | 7篇 |
1969年 | 5篇 |
排序方式: 共有1723条查询结果,搜索用时 15 毫秒
971.
Despite greater rates of capital accumulation, per capita growth rates among Third World nations (particularly, Africa) are much lower than among the advanced, capitalist nations. In this paper I examine the critical roles of the rule space and policy on economic growth. Empirically, nations with poor institutions and policies grow at about a fifth of the rate of nations with good institutions and policies. 相似文献
972.
Jakob de Haan 《Public Choice》1997,93(3-4):395-426
This paper reviews research on central banking and monetary policy, with special emphasis on the position of the future European Central Bank. Nowadays, it is often thought that an independent central bank with an explicit mandate to aim for price stability constitutes an important institutional device to assure price stability. Indeed, the ECB will be one of the most independent central banks as follows from the codings of various indicators measuring legal independence. Still, it does not follow straightforwardly from the literature that the Statute of the ECB is optimal. It is also argued that the accountability of the ECB is poorly arranged for in comparison with that of several national central banks. Finally, the discussion about the monetary strategy of the ECB is reviewed. 相似文献
973.
在西部大开发的战略性基点上 ,具有核心意义的问题不是区域经济问题而是民族发展问题。西部少数民族问题与农民问题的交织 ,使城乡结构调整与城市化发展成为实现西部大开发战略意义的最基本和最迫切的问题。应突破以往的城市化思路和模式 ,以制度创新作为整个战略选择的基点并把中等城市的发展作为主攻方向 ,才能真正实现西部大开发的战略性意义 相似文献
974.
Gerald F. Kominski 《Journal of policy analysis and management》1993,12(4):786-791
975.
Based upon the assumption that identity status, locus of control, and ego stage development are interrelated psychological mechanisms that screen and filter social stimuli, a comparison of the three psychological constructs was completed using 294 college students. Identity achievement students were found to be more advanced in their ego stage development and level of internality, while diffusion students were less advanced. Contrary to expectations, no evidence was found for intraindividual development based upon cross-sectional data.Research interests are personality and social development of adolescents, interpersonal attraction, and family relations.Received her M.S. in human development from Utah State University. 相似文献
976.
Roewer L Kayser M de Knijff P Anslinger K Betz A Caglià A Corach D Füredi S Henke L Hidding M Kärgel HJ Lessig R Nagy M Pascali VL Parson W Rolf B Schmitt C Szibor R Teifel-Greding J Krawczak M 《Forensic science international》2000,114(1):31-43
A 9-locus microsatellite framework (minimal haplotype), previously developed for forensic purposes so as to facilitate stain analysis, personal identification and kinship testing, has been adopted for the establishment of a large reference database of male European Y-chromosomal haplotypes. The extent of population stratification pertaining to this database, an issue crucial for its practical forensic application, was assessed through analysis of molecular variance (AMOVA) of the 20 regional samples included. Despite the notion of some significant haplotype frequency differences, which were found to correlate with known demographic and historic features of Europeans, AMOVA generally revealed a high level of genetic homogeneity among the populations analyzed. Owing to their high diversity, however, accurate frequency estimation is difficult for Y-STR haplotypes when realistic (i.e. moderately sized) datasets are being used. As expected, strong pair-wise and higher order allelic associations were found to exist between all markers studied, implying that haplotype frequencies cannot be estimated as products of allele frequencies. A new extrapolation method was therefore developed which treats haplotype frequencies as random variables and generates estimates of the underlying distribution functions on the basis of closely related haplotypes. This approach, termed frequency 'surveying', is based upon standard population genetics theory and can in principle be applied to any combination of markers located on the Y-chromosome or in the mitochondrial genome. Application of the method to the quality assured reference Y-STR haplotype database described herein will prove very useful for the evaluation of positive trace-donor matches in forensic casework. 相似文献
977.
An analysis is given of Kantorovich's method of resolving multipliers. It is shown that the method is equivalent to a parametric method but that it is also equivalent with the simplex method with a special rule for the choice of the new basic variable. 相似文献
978.
Brenda Dawson Armando de Armas Melanie L. McGrath Jeffrey A. Kelly 《Journal of family violence》1986,1(3):209-221
Child neglect, the failure to adequately meet a youngster's care needs, is the most frequent form of child maltreatment reported to welfare authorities. However, there have been few empirical reports of treatment outcomes for adjudicated, child neglectful parents. In the current study, an initial assessment of three neglectful parents revealed substantial deficits in cognitive problem-solving skills related to child care judgment. Treatment, consisting of modeling, shaping, practice, and feedback was used to improve each parent's child care problem-solving skills in a multiple baseline design. Skill enhancement was also found for untrained (generalization) problem situations, and independent caseworker ratings of each family's functioning provided external validation of the intervention's clinical impact. 相似文献
979.
980.