Secular Trend in the Development of Permanent Teeth in a Population of Istria and the Littoral Region of Croatia

The study evaluated secular trends in dental development during a period of 30 years, correlation between dental and chronological age in Istria and the littoral region of Croatia. The sample consisted of 1000 panoramic radiographs of children, aged 6–16 years (mean 10.0 ± 1.8), taken in the period 1977–1979 (N = 500; 243 females) and 2007–2009 (N = 500; 299 females). Dental age was assessed according to Demirjian's method. Correlation between chronological and dental age was linear, positive, high, and statistically significant in both periods and genders, ranging from 0.73 to 0.86. Dental age was underestimated when compared to chronological age by 1 year on average, more 30 years ago (?1.35 ± 1.17) than today (?0.63 ± 1.09), less for girls (?0.80 ± 1.22) than boys (?1.21 ± 1.10). A statistically significant positive secular trend in acceleration of dental development was present of 0.72 years during the 30‐year period and was more significant in girls than boys (0.83‐ and 0.51‐year acceleration).     

城市少数民族流动人口犯罪实证研究--以S市M区的统计数据为基础的分析

对s市M区统计数据的实证分析表明,城市涉嫌犯罪的少数民族人员以无任何前科记录的初中文化水平以下的外来男性农民和无业人员为主;实施的犯罪行为比较轻,相对集中于盗窃罪,寻衅滋事罪,走私、贩卖、运输、制造毒品罪等几个罪名;共同犯罪的规模较小,共同犯罪人之间的联系比较松散,作案手段多元化、相对平和,重特大案件罕见;适用刑罚比较轻缓,以3年以下有期徒刑、拘役、罚金为主。城市少数民族人员犯罪并不是严重的社会现象,其数量和严重程度远远低于汉族人犯罪。因此,少数民族“流动人口”犯罪问题不应当特殊化,应当在人口流动和城镇化的背景下,理性客观地对待少数民族人员犯罪问题,贯彻宽严相济的刑事政策,采取措施使得少数民族“流动人口”尽快融入大城市。     

Concordance Between the AmpFℓSTR® MiniFiler™ and AmpFℓSTR® Identifiler® PCR Amplification Kits in the Kuwaiti Population

Abstract:  The AmpFℓSTR^® MiniFiler™ polymerase chain reaction amplification kit, developed and supplied by Applied Biosystems, complements the AmpFℓSTR^® Identifiler^® polymerase chain reaction amplification kit (Applied Biosystems, Warrington, U.K.) by improving the success rate when profiling DNA that is degraded or contains inhibitors. Before applying the MiniFiler™ kit to casework, the profiles from 200 unrelated Kuwaitis were compared to Identifiler^® profiles. Concordance was observed for 99.875% (1598 of 1600) of the compared STR loci. The two discordant profiles displayed allelic dropout: one at the D13S317 locus due to nonamplification of allele 10 in the MiniFiler™ profile, and one at the D18S51 locus due to nonamplification of allele 18 in the Identifiler^® profile.     

北京地区汉族人群6个STR基因座的遗传多态性

目的对北京地区汉族人群遗传数据进行调查研究。方法利用PCR自动化检测技术检测中国北京地区汉族人群D1S1656,D10S2325,D11S2368,D12S391,D14S1434及GATA198B05共6个STR基因座的遗传多态性,获得6个STR基因座的群体遗传学数据,评价其法医学应用价值。结果6个STR基因座的个体鉴别力（Discrimination power,DP）在0．9777-0．8769之间,多态性信息含量（Polymorphism information content,PIC）在0．6867-0．8801之间,杂合度（Heterozygosity,H）在0．7219～O．8684之间,非父排除率（Probability of paternity exclusion,PE）在0．4456-0．6793之间,累积个体鉴别力为0．99999997,累积非父排除率为0．995765192。结论6个STR基因座等位基因频率分布均匀,多态性高,适用于法医学亲子鉴定及个人识别,可作为现有基因座的补充。     

Analysis of AmpFlSTR MiniFiler™ loci and its forensic application

The allele frequencies of eight MiniFiler™ loci have been analyzed in 101 Japanese individuals living in Kanagawa with informed consent by means of ABI 310 Genetic Analyzer. A total of 7 alleles for D13S317, 8 alleles for D7S820, 11 alleles for D2S1338, 11 alleles for D21S11, 5 alleles for D16S539, 14 alleles for D18S51, 8 alleles for CSF1PO, and 13 alleles for FGA were observed. The polymorphic profiles of these MiniFiler™ loci in the present study were essentially the same as those obtained by using the AmpFlSTR^® Identifiler^® PCR Amplification kit. The combined matching probability of eight MiniFiler™ loci and cumulative probability of paternity exclusion were estimated as 1.97 × 10⁻¹⁰ and 0.9996, respectively. The MiniFiler™ kit was useful for individual identification in forensic analysis.     

关于重点人口社会化管理的几点思考

随着社会发展环境的变化,公安机关重点人口管理呈现出社会性、流动性、信息化特点。当前公安机关做好重点人口管理工作,就是要克服思想观念、管控手段和管理职能不适应的问题,建立适应公安工作科学发展的重点人口社会化、信息化、职能化管理新机制。     

论流动人口管理服务工作的创新

新形势下,流动人口总量的增加,就业取向和区域分布上的变化,思想观念上的转变,都反映出流动人口的新特点。我们应当肯定流动人口在城市稳定与发展中具有积极作用,同时充分认识到流动人口给城市管理带来了不少问题,在流动人口管理服务工作上实行观念的转变。公安机关应当在党委和政府的领导下,推动资源整合,对流动人口实现有效的、创新的社会化管理。     

退休政策的经济学分析及调整

退休政策通过影响劳动力的投入和养老负担对社会产出和就业人口、退休人口的福利水平产生影响，因此要对退休政策进行调整须进行较为充分的经济论证。研究对单人经济的退休年龄分析显示：存在一个基于个人一生效用最大化的“最佳”退休年龄，可合理平衡一生总产出和退休后的休闲。同理，一个多人经济社会也存在一个平均的“最佳”退休年龄。研究的结论如下：现有的退休年龄政策背景下，中国将面临日益沉重的养老负担，说明中国的退休年龄政策亟须调整；延迟退休年龄至少在长期对就业无负面影响，且可增加GDP:将暂时多余的社保基金用于金融投资无助于社会养老负担的缓解，养老金空账运行并无问题。为完善中国的退休政策，研究提出适时延长退休年龄、提高养老金标准和降低养老保险费率、对职工上缴的养老保险实施记账等建议。