全文获取类型
收费全文 | 809篇 |
免费 | 2篇 |
专业分类
各国政治 | 18篇 |
工人农民 | 22篇 |
世界政治 | 15篇 |
外交国际关系 | 17篇 |
法律 | 389篇 |
中国共产党 | 26篇 |
中国政治 | 98篇 |
政治理论 | 36篇 |
综合类 | 190篇 |
出版年
2025年 | 3篇 |
2024年 | 5篇 |
2023年 | 7篇 |
2022年 | 16篇 |
2021年 | 9篇 |
2020年 | 18篇 |
2019年 | 19篇 |
2018年 | 8篇 |
2017年 | 17篇 |
2016年 | 15篇 |
2015年 | 15篇 |
2014年 | 33篇 |
2013年 | 66篇 |
2012年 | 51篇 |
2011年 | 48篇 |
2010年 | 28篇 |
2009年 | 45篇 |
2008年 | 52篇 |
2007年 | 77篇 |
2006年 | 92篇 |
2005年 | 37篇 |
2004年 | 45篇 |
2003年 | 36篇 |
2002年 | 19篇 |
2001年 | 23篇 |
2000年 | 9篇 |
1999年 | 5篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1994年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 2篇 |
排序方式: 共有811条查询结果,搜索用时 0 毫秒
111.
龙一海 《安徽警官职业学院学报》2016,(1):118-121
自改革开放以来,数量庞大的务工人员作为流动人口,进入城市寻找工作。流动人口聚居区作为大部分流动人口在城市的定居方式,在一、二线城市已经出现多年了。流动人口自发组成的非正式组织是自身满足社交需求的重要方式。流动人口非正式组织对于公安机关的治安维持和人口管控具有重要的意义。公安机关应该重视对流动人口非正式组织的监控和管理。 相似文献
112.
在人口老龄化不断加剧的情况之下,社会发展将更多地依赖于老年人的积极参与。而且随着长寿社会的到来,老年人的参与愿望和参与能力都在提升。日本是世界上人口老龄化程度最高的国家,已进入人口减少和超老龄社会。人口下降和老龄化将带来劳动力减少问题,对日本整个社会的均衡和可持续发展产生严重影响。为了应对劳动力不足问题,日本不仅修改《老年人就业稳定法》逐渐延长退休年龄,保障老年人继续工作,而且开展老年志愿者活动积极为退休的老年人创造再就业的环境。 相似文献
113.
明中叶以后 ,澳门逐步成为重要的海港城市 ,在明清中外经济文化发展过程中扮演了重要角色。而明清澳门历史发展的轨迹与人口变化的历史状况密切相关 ,二者互为因果 ,双向互动。一方面 ,人口变化的历史状况 ,影响了澳门港市的兴衰 ;而另一方面 ,澳门经济的发展以及中国政治经济局势的影响 ,也制约着明清澳门人口的发展变化。 相似文献
114.
张浩 《河北公安警察职业学院学报》2004,4(1):37-39
由于社会主义市场经济的不断深化,流动人口犯罪也日益增多,已经成为困扰当代中国 社会的严重问题。本文对流动人口犯罪的特点、原因等作了简要剖析,并提出一些预防和控制措施。 相似文献
115.
Yang Cheng Siyao Gao Shuai Li Yuchao Zhang Mark Rosenberg 《Asia & the Pacific Policy Studies》2019,6(1):73-89
Understanding the regional pattern of population aging in China enables rational policy making to address the challenges of inequity in social welfare and care resources among the east–central–west regions and rural–urban areas of China. This study uses census data in 2000 and 2010, and aging population ratios, annual increase rates, and spatial autocorrelation analysis to examine spatial disparities in population aging in China. The results show that the population is more aged and aging more rapidly in rural areas than in urban areas. Spatial clusters of population aging expanded from the east coastal region in 2000, to inland provinces such as Sichuan and Chongqing in 2010. The vulnerable regions in terms of population aging, health status of the elderly population, and economic level at the prefectural level were also identified. 相似文献
116.
《Forensic Science International: Genetics Supplement Series》2019,7(1):90-91
Researches with RM Y-STRs have shown that these loci provide substantially higher haplotype diversity and haplotype discrimination capacity in worldwide populations when compared with the YSTRs commonly used in genetic forensics. The aim of this study was to develop an allelic frequency database for the Syrian population living in Turkey in order to obtain population data of 12 RM Y-STRs. A total of 80 unrelated males from the Syrian population living in Turkey were typed with 12 RM Y-STRs loci: DYF387S1, DYF399S1, DYF404S1, DYS449, DYS518, DYS526a/b, DYS547, DYS570, DYS576, DYS612, DYS626 and DYS627. The highest GD was observed for the locus DYF399S1 (0.91), followed by loci DYS449 (0.86) and DYS518 (0.83). RM Y-STR haplotype diversity was found 1.00 in these samples. Based on the results of this study, the RM YSTR loci showed remarkable haplotype resolution power in the Syrian population, high genetic diversity and, therefore, demonstrating their usefulness in forensic identification cases. 相似文献
117.
《Forensic Science International: Genetics Supplement Series》2019,7(1):38-40
The She ethnic is a large minority in China with approximately 700,000 individuals. For more than one thousand years, they mainly resided in Zhejiang and Fujian provinces. To obtain a better understanding of the genetic background of She, we investigate 21 autosomal STRs (A-STRs) and 16 X-STRs in 296 unrelated healthy individuals from Zhejiang She population. Allele frequencies and forensic parameters prove these markers are useful for forensic application. We also investigate the genetic background with the two types of markers. Nei genetic distances between She and Eastern Han population are always the lowest, regardless of the markers used for analysis. Although the tested STRs are located on different chromosomes with different inheritance laws, A-STRs and X-STRs provided in general congruent phylogenetic signal and similar cluster among compared groups. These results demonstrated that geographic isolation and interactions play significant roles in differentiation of genetic constitution of ethnic groups. 相似文献
118.
《Forensic Science International: Genetics Supplement Series》2019,7(1):95-97
Y-chromosomal short tandem repeats (Y-STRs) polymorphisms are useful in forensic identification, population genetics and constructing of human structures. Increasing the number of Y-STRs and their polymorphism will drastically narrow down the matching number of genealogy populations or pedigrees when searching against a forensic DNA databank. In this study, we develop a system containing 17 complementary Y-STRs that are compatible and reinforce the current commercially available Y-STR kits. This system was constructed by multiplex PCR with expected size of 126bp-400bp using home-made universal primers labeled by different fluorescence (DYS715, DYS709, DYS716, DYS713, DYS607, DYS718, DYS723, DYS708, DYS714, DYS712, DYS717, DYS721, DYS605, DYS719, DYS726, DYS598 and DYS722). The genetic data were obtained from 394 individuals in Shanxi province, China. The Y-STR system has 131 haplotypes and high discrimination power is 1. In conclusion, our study provides a robust, sensitive and cost-effective genotyping method for human identification, which is beneficial for narrowing the searching scope when applying to the genealogy searching with Y-STR DNA databank. 相似文献
119.
《Forensic Science International: Genetics Supplement Series》2019,7(1):62-64
Fifteen autosomal STRs were analyze in order to elucidate the differences between low and high land Ecuadorian population. Seven Ecuadorian geographic areas (Tisaleo-Mocha, Cañar, Quito, Rocafuerte, Santa Rosa, Guayaquil and Lago Agrio) from different altitude were selected for the study. After the analysis, little genetic distances were observed between all cities, the more distant cities (FST = 0.02354) were Rocafuerte at an elevation of 17 m.a.s.l. and Quito at 2850 m.a.s.l. and the similar cities (FST = 0.00033) were Rocafuerte (17 m.a.s.l.) and Santa Rosa (10 m.a.s.l). In conclusion, there is not a great genetic distance in the 15 STRs reported in high and low land Ecuadorian population, therefore previously reported frequencies could been used in identification and paternity cases under analysis. 相似文献
120.
Connie L. Parks M.A. Kelsey M. Kyllonen M.A. Keith L. Monson Ph.D. 《Journal of forensic sciences》2017,62(4):994-997
Facial approximations based on facial soft tissue depth measurement tables often utilize the arithmetic mean as a central tendency estimator. Stephan et al. (J Forensic Sci 2013;58:1439) suggest that the shorth and 75‐shormax statistics are better suited to describe the central tendency of non‐normal soft tissue depth data, while also accommodating normal distributions. The shorth, 75‐shormax, arithmetic mean, and other central tendency estimators were evaluated using a CT ‐derived facial soft tissue depth dataset. Differences between arithmetic mean and shorth mean for the tissue depths examined ranged from 0 mm to +2.3 mm (average 0.6 mm). Differences between the arithmetic mean plus one standard deviation (to approximate the same data points covered by the 75‐shormax) and 75‐shormax values ranged from ?0.8 mm to +0.7 mm (average 0.2 mm). The results of this research suggest that few practical differences exist across the central tendency point estimators for the evaluated soft tissue depth dataset. 相似文献