全文获取类型
收费全文 | 676篇 |
免费 | 35篇 |
专业分类
各国政治 | 61篇 |
工人农民 | 40篇 |
世界政治 | 107篇 |
外交国际关系 | 56篇 |
法律 | 274篇 |
中国政治 | 14篇 |
政治理论 | 158篇 |
综合类 | 1篇 |
出版年
2023年 | 8篇 |
2022年 | 5篇 |
2021年 | 8篇 |
2020年 | 16篇 |
2019年 | 28篇 |
2018年 | 28篇 |
2017年 | 32篇 |
2016年 | 36篇 |
2015年 | 16篇 |
2014年 | 21篇 |
2013年 | 137篇 |
2012年 | 16篇 |
2011年 | 22篇 |
2010年 | 22篇 |
2009年 | 22篇 |
2008年 | 20篇 |
2007年 | 23篇 |
2006年 | 20篇 |
2005年 | 28篇 |
2004年 | 18篇 |
2003年 | 21篇 |
2002年 | 23篇 |
2001年 | 10篇 |
2000年 | 13篇 |
1999年 | 5篇 |
1998年 | 14篇 |
1997年 | 4篇 |
1996年 | 7篇 |
1995年 | 8篇 |
1994年 | 7篇 |
1993年 | 3篇 |
1992年 | 5篇 |
1991年 | 8篇 |
1990年 | 7篇 |
1989年 | 8篇 |
1988年 | 4篇 |
1987年 | 4篇 |
1985年 | 5篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 3篇 |
1973年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有711条查询结果,搜索用时 20 毫秒
71.
This article deals with developing relationships between local authorities and local non–elected public service agencies in England and Wales. It classifies local authority responses to the growth of the non–elected state. Account is taken of varying agency characteristics and the constraints and dilemmas they face. From the local authority vantage point what is at stake is organizational (re)positioning in a changing institutional environment. Insights derived from strategic management are therefore utilized. But resource dependencies and exchanges also manifest themselves in these emerging relationships. Moreover, account must be taken of the scope for local authorities to be 'network managers' given the structural reconfiguration of the local state. The analysis therefore takes on board organizational networking theoretical frameworks. Although central government remains best placed to manipulate the 'rules of the [new and uncertain] game', interesting possibilities present themselves if local authorities can show more strategic skill than in the recent past. 相似文献
72.
73.
Chris W. Eskridge 《Journal of criminal justice》1983,11(1):67-75
This note examines the relationship between individual burglary and individual burglar characteristics. The primary contribution of this work is the development of a practical prediction model designed to assist in burglary investigations. By using various statistical techniques, a number of discriminating variables were identified, and subsequently clustered in such a fashion as to disclose a probability of occurrence figure based on ex post facto data. While the use of such a device may increase both the nature and extent of the information available to investigative officers, it is neither a substitute for the elements of probable cause nor a replacement for competent field investigation. 相似文献
74.
75.
76.
Intoxilyzer 5000 and blood-alcohol results from drivers arrested for operating a motor vehicle while intoxicated and for related offenses were compared during a two-year period. Three hundred and ninety-five pairs of results were studied. The breath- and blood-alcohol specimens in this study were collected within 1 h of each other. The mean blood-alcohol concentration obtained was 0.180 g/dL, with a range from zero to 0.338 g/dL. By comparison, the mean Intoxilyzer 5000 result was 0.16 g/210 L with a range from zero to 0.32 g/210 L. Compared with the blood-alcohol result, Intoxilyzer 5000 results were lower by more than 0.01 g/210 L 67% of the time, within 0.01 g/210 L 31% of the time, and higher by more than 0.01 g/210 L 2% of the time. 相似文献
77.
78.
79.
Egan JM Rickenbach M Mooney KE Palenik CS Golombeck R Mueller KT 《Journal of forensic sciences》2006,51(6):1276-1283
Banknote evidence is often submitted after a suspect has attempted to disguise or remove red dye stain that has been released because of an anti-theft device that activates after banknotes have been unlawfully removed from bank premises. Three chlorinated compounds have been synthesized as forensic chemical standards to indicate bank security dye bleaching as a suspect's intentional method for masking a robbery involving dye pack release on banknotes. A novel, facile synthetic method to provide three chlorinated derivatives of 1-(methylamino)anthraquinone (MAAQ) is presented. The synthetic route involved Ultra Clorox bleach as the chlorine source, iron chloride as the catalyst, and MAAQ as the starting material and resulted in a three-component product mixture. Two mono-chlorinated isomers (2-chloro-1-(methylamino)anthraquinone and 4-chloro-1-(methylamino)anthraquinone) and one di-chlorinated compound (2,4-dichloro-1-(methylamino)anthraquinone) of the MAAQ parent molecule were detected by gas chromatography mass spectrometry (GC-MS), and subsequently isolated by liquid chromatography (LC) with postcolumn fraction collection. Although GC-MS is sensitive enough to detect all of the chlorinated products, it is not definitive enough to identify the structural isomers. Liquid-state nuclear magnetic resonance (NMR) spectroscopy was utilized to elucidate structurally the ortho- and para-mono-chlorinated isomers once enough material was properly isolated. A reaction mechanism involving iron is proposed to explain the presence of chlorinated MAAQ species on stolen banknotes after attempted bleaching. 相似文献
80.
Jin HJ Kwak KD Hong SB Shin DJ Han MS Tyler-Smith C Kim W 《Forensic science international》2006,158(2-3):125-130
We have analyzed variation of the mitochondrial DNA (mtDNA) hypervariable segments I and II (HVS-I and HVS-II) in 185 randomly chosen individuals from Korea to provide an expanded and reliable Korean database. Combined sequence comparison of HVS-I and HVS-II led to the identification of 167 different haplotypes characterized by 154 variable sites. One hundred and fifty-one of the haplotypes were individual-specific, 14 were found in two individuals and 2 were found in three individuals. A pairwise comparison of the 185 HVS-I/II sequences found an average of 10.11 +/- 4.63 differences between individuals. The random match probability and gene diversity for the combined hypervariable regions were estimated at 0.66% and 0.9988, respectively. Analyzing the expanded database including three previously reported data sets and the present data using haplogroup-based comparisons and comparison with closely related sequences allowed errors to be detected and eliminated, thus considerably improving data quality. Sample division comparisons based on PhiST genetic distance measures revealed no significant population differentiation in the distribution of mtDNA sequence variations between the present data set and a database in The Scientific Working Group on DNA Analysis Methods (SWGDAM), but did indicate differences from other sets of data. Based on the results of mtDNA profiles, almost all of the mtDNA types studied here could be classified into subsets of haplogroups common in east Asia, and show that the Koreans possess lineages from both the southern and the northern haplogroup complexes of east Asian populations. The new data, combined with other mtDNA sequences, demonstrate how useful comparison with closely related mtDNA sequences can be for improving database quality, as well as providing haplotype information for forensic and population genetic analyses in the Korean population. 相似文献