Haplotype frequencies of eight Y-chromosome short tandem repeats loci in four Amerindian populations (state of Hidalgo, Mexico)

Population: Amerindian populations: Huastecos (n=97), Otomies de la Sierra (n=41), Otomies del Valle (n=40), and Tepehuas (n=13).     

Y chromosome haplotypes in Central-South Italy: implication for reference database

One hundred and fifty individuals have been sampled across Central-South Italy and genotyped for Y chromosome STRs by PowerPlex Y system. Comparison with previous Italian databases revealed that majority of Y chromosome variation still need to be sampled. Identification of locus duplications, distribution of genetic variation and firstly identified alleles point to the necessity of more focused sampling strategies for reference databases.     

住房反向抵押贷款的推行与法律的社会控制

住房反向抵押贷款对于经济正处于积累发展阶段,刚刚步入老龄化社会,各项养老保障制度尚待充实完善的中国社会而言,是一个崭新的事物。住房反向抵押贷款的推行与法律的社会控制休戚相关,研究其推行过程中如何实现法律的社会控制非常重要。     

城市安全不能承受之重与流动人口不能承受之轻——兼论北京市流动人口犯罪预警机制的作用与完善

构建流动人口权益保障体制对于维护城市安全具有重要作用。本文分析了北京市流动人口犯罪的现状与原因,强调理性对待流动人口犯罪的必要性,提出应平等对待流动人口、在控制人口盲目流动的同时应当保障流动人口的基本权益,并发挥犯罪预警机制在预防流动人口犯罪中的作用。     

对托达罗模型前提、变量及政策含义的新思考

本文在中国二元制度的背景下,建立了一个在前提、变量及政策主张诸方面不同于托达罗人口流动模型的中国农村劳动力流动模型,指出在中国特殊的制度背景下影响农民作出外出务工决策的主要因素是其流入城市的净收益现值,并对决定这一现值的各变量进行了考察.作者认为二元的经济和社会体制限制了农民的外出,降低了农民的流动和迁移意愿.最后作者就此提出了短期内促进农民工流动和长期内保证农民迁移的政策建议.     

The Evidentiary Significance of Automotive Paint from the Northeast: A Study of Red Paint

This population study was conducted to assess the frequency of physical, microscopical, and chemical properties of automotive paint chips. Population studies of trace evidence provide valuable analytical data for criminalists to assess evidentiary significance. Two‐hundred automotive paint chips were collected from auto body shops from the Northeastern United States. All samples were analyzed using stereomicroscopy, brightfield, and polarized light microscopy. Red paints were targeted for further analysis using a sequence of modern instrumental techniques commonly used by forensic paint examiners: Fourier‐transform infrared (FT‐IR), Raman, and ultraviolet–visible (UV–Vis) microspectroscopy. The discrimination potential of each analytical method was evaluated by inter‐comparing the paint samples. Results demonstrated that macroscopic and microscopic properties were able to differentiate 99.995% of the population (one undifferentiated pair out of 19,900). When combined with either FT‐IR or UV–Vis microspectroscopy, all paints were differentiated. The results of this research lead to the conclusion that one would not expect to encounter two indistinguishable paint chips originating from different sources during the investigation of a single event.     

Measuring and explaining the marriage boom in the developed world

Using aggregated data from 25 developed countries over a lengthy period of time, this article presents a measure of the marriage boom observed in the twentieth century and an explanation for its causes. One of my main conclusions is that even though it basically developed after the Second World War, its origins are to be found before it. I found that, contrary to the views of some scholars, this boom was not a short-lived phenomenon, but actually lasted for 90 years on average. Using panel data analysis techniques, I am able to show that the rise in women’s education, state spending on social benefits, and larger percentages of people employed in the primary sector tended to discourage marriage. I also found a quadratic relationship between the nuptiality index and the per capita income and mortality rates.     

我国劳动力结构的演变及其影响研究

劳动力是经济增长的关键要素之一,其变化对我国经济社会发展有着深刻影响.本研究根据第七次全国人口普查主要数据,结合改革开放后以往人口普查数据和分年度人口数据,分析了我国劳动力结构的演变规律及可能带来的影响.研究发现,40余年来,我国劳动力结构发生了根本性的变化,并开始面临劳动年龄人口减少、抚养负担加重、劳动力地区分布不均...