全文获取类型
收费全文 | 660篇 |
免费 | 27篇 |
专业分类
各国政治 | 38篇 |
工人农民 | 43篇 |
世界政治 | 76篇 |
外交国际关系 | 31篇 |
法律 | 403篇 |
中国政治 | 1篇 |
政治理论 | 95篇 |
出版年
2023年 | 6篇 |
2022年 | 5篇 |
2021年 | 15篇 |
2020年 | 18篇 |
2019年 | 16篇 |
2018年 | 31篇 |
2017年 | 45篇 |
2016年 | 42篇 |
2015年 | 25篇 |
2014年 | 29篇 |
2013年 | 83篇 |
2012年 | 31篇 |
2011年 | 17篇 |
2010年 | 13篇 |
2009年 | 16篇 |
2008年 | 23篇 |
2007年 | 31篇 |
2006年 | 25篇 |
2005年 | 20篇 |
2004年 | 29篇 |
2003年 | 18篇 |
2002年 | 25篇 |
2001年 | 23篇 |
2000年 | 9篇 |
1999年 | 9篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 5篇 |
1990年 | 6篇 |
1989年 | 7篇 |
1988年 | 5篇 |
1987年 | 4篇 |
1985年 | 1篇 |
1984年 | 3篇 |
1983年 | 3篇 |
1981年 | 1篇 |
1979年 | 3篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1973年 | 7篇 |
1972年 | 5篇 |
1971年 | 9篇 |
1970年 | 1篇 |
1966年 | 1篇 |
1965年 | 1篇 |
排序方式: 共有687条查询结果,搜索用时 15 毫秒
511.
512.
Edward J. López 《Public Choice》2007,130(1-2):249-250
513.
Light DW Castellblanch R Arredondo P Socolar D 《Journal of health politics, policy and law》2003,28(2-3):473-507
Although leadership is typically seen as coming from the leaders of governments and major institutions, a strong case can be made that concerned citizens first articulate important issues and policies that official leaders then pick up and promote. In a market-based society dominated by large corporations, Hirschman's framework of exit, voice, and loyalty can be used to relate consumer and grassroots movements to markets, when participants believe there is no exit and loyalty (or acquiescence) is not an option. While "voice" is usually applied to the individual or consumer level, this article develops the concept of organized voice and illustrates how it has exhibited leadership in the controversial relations between the biotech and pharmaceutical industries and society as a whole. The essay concludes by urging more research on organized voice as a source of leadership and by outlining some important dimensions for researchers to consider. 相似文献
514.
DNA typing revealing high HLA-Cw polymorphism completes availability of major histocompatibility complex loci in forensic medicine 总被引:2,自引:0,他引:2
Keresztury L Rajczy K Tauszik T Gyódi E Petrányi GG Falus A 《The American journal of forensic medicine and pathology》2003,24(1):70-75
Studies of human population genetics in Hungary have revealed relevant heterogeneity in the major histocompatibility complex. In the present studies, two isolated ethnic groups were chosen: people living in the Káli Basin westward from the Danube River, and those living in Opusztaszer, a village eastward from Danube, who are known as native ancient Hungarians. Blood samples were collected from 70 people in the Káli Basin and from 45 people in Opusztaszer. The frequency of HLA-Cw alleles was determined by serology as well as by DNA typing in 46 and 32 samples of the two populations, respectively, and in 44 randomly selected subjects of Hungarian origin. Compared with a random population of cadaver donors (the deaths having resulted mostly from accidents or, in a smaller number, strokes or heart infarcts) and voluntary bone marrow donors (typed in the last 10 years) recruited from all parts of Hungary and representing the mixed Hungarian population, remarkable differences were found in haplotype and allele frequencies. HLA-A, -B, -Cw typing was performed by serology and, in the case of the HLA-Cw locus, by polymerase chain reaction (PCR)-SSP and/or PCR-SSOP techniques, as well. The PCR-SSO oligotyping procedure allowed the identification of 32 Cw alleles in contrast with the 9 serologically detectable types. Because of the combination of low antigen expression and the lack of specific serologic reagents of good quality, no HLA-Cw antigens were detectable in 41%, and only one was detected in 48%, of the investigated individuals by standard serologic typing. With PCR-SSO typing, however, 97% of the investigated individuals proved to be heterozygous for HLA-Cw alleles. The two isolated populations differed from each other, from mixed Hungarian and other Caucasian populations in HLA-Cw* allele frequencies, as well as in haplotype distribution. This newly recognized polymorphism at the HLA-Cw locus completes the availability of major histocompatibility complex typing in forensic science and practice. 相似文献
515.
516.
Torres Y Flores I Prieto V López-Soto M Farfán MJ Carracedo A Sanz P 《Forensic science international》2003,134(2-3):180-186
Occasionally interpretation guidelines from validation studies are difficult to apply to real forensic casework, especially in the case of mixed samples. Exogenous contamination, an unknown number of contributors or unbalanced proportion of each one in the sample and a varied degree of degradation of the biological materials, contribute to the difficulties in the interpretation of sample profiles. In this paper we have reviewed all the mixed genetic STR profiles encountered in our laboratory over 4 years (1997-2000) and evaluated the problems in the interpretation of the results. From 1547 criminal cases with 2424 samples typed, 163 showed a mixed profile (6.7%). We have observed that occasionally, a mixture appeared in the same sample with one multiplex amplification kit (e.g. Blue) and not with another (e.g. Green). From our results, it can be suggested that technical characteristics of the different fluorochrome groups in the multiplexes override the molecular characteristics of each STR in their capacity to detect mixtures. 相似文献
517.
518.
519.
Public sector efficiency: An international comparison 总被引:10,自引:0,他引:10
We compute public sector performance (PSP) and public sector efficiency (PSE) indicators, comprising a composite and seven sub-indicators, for 23 industrialised countries. The first four sub-indicators are “opportunity” indicators that take into account administrative, education and health outcomes and the quality of public infrastructure and that support the rule of law and a level playing-field in a market economy. Three other indicators reflect the standard “Musgravian” tasks for government: allocation, distribution and stabilisation. The input and output efficiency of public sectors across countries is then measured via a non-parametric production frontier technique. The study finds significant differences in PSP and PSE, which suggests a large potential for expenditure savings in many countries. 相似文献
520.
González-Neira A Gusmão L Brión M Lareu MV Amorim A Carracedo A 《Forensic science international》2000,110(2):117-126
Seven Y-specific STR loci (DYS19, DYS389I, DY5389II, DYS390, DYS391, DYS392 and DYS393) were studied in five populations from the Iberian Peninsula: Andalusia, Valencia, Basque Country, Galicia and Northern Portugal. Haplotype and allele frequencies of these seven Y-chromosome STRs were estimated. Observed haplotype diversities are in a range between 0.96 (Basque Country) and 0.99 (Valencia and Andalusia). Significant population differentiation was registered between Basques and all the other Iberian populations and also between Valencia and Northern Portugal. 相似文献