城市化与农村流动人口犯罪问题原因分析

城市化战略对我国经济社会的发展具有重大作用。但是,在我国城市化加速发展的进程中,犯罪也随之而出现。目前我国犯罪的城市化趋势和农村流动人口的犯罪问题均与城市化进程中滞后或虚无的社会防卫机制和农村流动人口特有的文化心理有着重大关系。     

Malawi’s land problem and potential for rural conflict

Government agricultural policies which favour large-scale agriculture and rapid population growth on a limited land area have combined to create a situation of land poverty in many parts of Malawi, especially in the southern region of the country. The government’s response to land poverty has so far been focused on the creation of resettlement schemes. As such initiatives are expensive, they have tended to be piecemeal and benefit only a small fraction of land poor families. Frustrated land poor families have now resorted to land encroachment on privately held land. The emergence of movements dedicated to the restoration of estates to families with ancestral claims to the land marks a new stage in land relations which could have unwelcome consequences.     

INCARCERATION AND POPULATION HEALTH IN WEALTHY DEMOCRACIES*

Everywhere you look, incarceration seems to be doing harm. Research has implicated incarceration not only in worse outcomes for individuals, their families, and their communities but also in growing inequality. Yet incarceration may not always harm society—even if it does harm those who experience it. To consider this possibility, I build an argument demonstrating how the macro‐level consequences of incarceration may be distinctively harmful in the United States, focusing on the incarceration–health relationship as one indicator of a broader phenomenon. I then test my hypothesis by using an unbalanced panel data set including 21 developed democracies (N = 414) and a series of ordinary least‐squares models predicting three measures of population health as a function of incarceration. Models including only a main effect of incarceration demonstrate an inverse association between changes in incarceration and changes in population health. Models including an incarceration by U.S. interaction, however, indicate that the population health consequences of changes in incarceration are far worse in the United States than elsewhere. Taken together, the results indicate that the United States is exceptional for both its rate of incarceration and its effects of incarceration, although it is unclear what drives this exceptionalism in effects.     

全面实现山西人口现代化的对策

人口现代化是社会主义现代化的前提和保证。全面实现山西人口现代化,必须搞好计划生育,稳定低生育水平,建立和完善利益导向机制,控制出生人口性别比;降低新生儿缺陷率,发展教育事业,提高人口素质;科学合理地加快城镇化建设;对贫困地区进行重点扶持。     

4个STR基因座在广东汉族人群的单倍型分布

调查DYS19、DYS390和DYS389Ⅰ/Ⅱ基因座在广东汉族群体的单倍型分布。PCR扩增后,用不连续PAGE电泳系统分型。在130名无关男性个体中,共检出81种不同的单倍型,其中52种只出现过1次。4个基因座单倍型的遗传多样性、个体识别率和非父排除率分别为0.9989,0.9824,0.9824,结果表明,4个STR基因座的单倍型检测在法医学个体识别和亲权鉴定方面有较高的应用价值。     

Texas Population Substructure and Its Impact on Estimating the Rarity of Y STR Haplotypes from DNA Evidence*

Abstract: Three sampled populations of unrelated males—African American, Caucasian, and Hispanic, all from Texas—were typed for 16 Y short tandem repeat (STR) markers using the AmpFlSTR^® Yfiler^TM kit. These samples also were typed previously for the 13 core CODIS autosomal STR loci. Most of the 16 marker haplotypes (2478 out of 2551 distinct haplotypes) were observed only once in the data sets. Haplotype diversities were 99.88%, 99.89%, and 99.87% for the African American, Caucasian, and Hispanic sample populations, respectively. F_ST values were very small when a haplotype comprised 10–16 markers. This suggests that inclusion of substructure correction is not required. However, haplotypes consisting of fewer loci may require the inclusion of F_ST corrections. The testing of independence of autosomal and Y STRs supports the proposition that the frequencies of autosomal and Y STR profiles can be combined using the product rule.     

Canine Population Data Generated from a Multiplex STR Kit for Use in Forensic Casework*

Abstract: Canine biological specimens are often part of the physical evidence from crime scenes. Until now, there have been no validated canine‐specific forensic reagent kits available. A multiplex genotyping system, comprising 18 short tandem repeats (STRs) and a sex‐linked zinc finger locus for gender determination, was developed for generating population genetic data assessing the weight of canine forensic DNA profiles. Allele frequencies were estimated for 236 pedigreed and 431 mixed breed dogs residing in the U.S. Average random match probability is 1 in 2 × 10³³ using the regional database and 1 in 4 × 10³⁹ using the breed dataset. Each pedigreed population was genetically distinct and could be differentiated from the mixed breed dog population but genetic variation was not significantly correlated with geographic transition. Results herein support the use of the allele frequency data with the canine STR multiplex for conveying the significance of identity testing for forensic casework, parentage testing, and breed assignments.     

Reliability of Third Molar Development for Age Estimation in a Texas Hispanic Population: A Comparison Study*

Abstract: Evaluating third molars from 950 Hispanic individuals aged 12–22 years using Demirjian’s schematic for crown and root formation found that Hispanic third molar development was 8–18 months faster than American Caucasians as reported by Mincer, Harris and Berryman in 1993. This represents a statistically significant increase. Earlier development was more apparent in the later stages F through H. Hispanic males reach developmental stages faster than Hispanic females and maxillary third molars reach developmental stages faster than mandibular third molars in both sexes. The earliest age observed for stages B–H (e.g., Stage H first observed at age 13.92 years in females) and the oldest age observed for Stages B–G were developed to facilitate age prediction of unknown individuals. Prediction tables for minimum and maximum age for an observed stage (e.g., if a female maxillary third molar is stage F it means she is older than 13 years) for each sex‐jaw group were calculated.     

Stature Estimation Formulae for Nigerians

Abstract:  In stature estimation, long limbs and the stature formula of Trotter and Gleser easily come to mind. In the recent past, a lot of workers have established formulae specific to their populations using whole length of limbs, fragmented bones, circumference of long bones, and even length of the vertebrae. We have in this work used tibia length, height of subjects, and the regression models to establish formulae specific to Nigerians. We measured height and tibia length of 200 (96 male and 104 female) adult Nigerians. The tibia length was measured from upper limit of the medial condoyle to the tip of medial malleolus using a measuring tape calibrated in meters while the height of individuals were also measured using meter scales. All measurements were made by one person, to avoid interobserver error, and repeatedly until a constant value is obtained. We obtained general formulae for males and females which compares favorably with that of Duyar and Pelin, and can be relied upon.