A Life in Song

正Famed Chinese opera singer Hao Jiang Tian completes a special 30th anniversary recital From the opening notes of Hao Jiang Tian’s recital commemorating his 30-year career as one of the world’s most celebrated operatic bass voices,including 19 years at the New York Metropolitan Opera,the audience could sense it was one of the singer’s most personal performances.The teenage Chinese factory worker with a"big voice"was transformed into a king of Verdi and Mozart,taking listeners through a repertoire of classic Chinese folk     

TARGET CHOICE DURING EXTREME EVENTS: A DISCRETE SPATIAL CHOICE MODEL OF THE 2011 LONDON RIOTS

Riots are extreme events, and much of the early research on rioting suggested that the decision making of rioters was far from rational and could only be understood from the perspective of a collective mind. In the current study, we derive and test a set of expectations regarding rioter spatial decision making developed from theories originally intended to explain patterns of urban crime when law and order prevail—crime pattern and social disorganization theory—and consider theories of collective behavior and contagion. To do this, we use data for all riot‐related incidents that occurred in London in August 2011 that were detected by the police. Unlike most studies of victimization, we use a random utility model to examine simultaneously how the features of the destinations selected by rioters, the origins of their journeys, and the characteristics of the offenders influence offender spatial decision making. The results demonstrate that rioter target choices were far from random and provide support for all three types of theory, but for crime pattern theory in particular. For example, rioters were more likely to engage in the disorder close to their home location and to select areas that contained routine activity nodes and transport hubs, and they were less likely to cross the Thames River. In terms of contagion, rioters were found to be more likely to target areas that had experienced rioting in the previous 24 hours. From a policy perspective, the findings provide insight into the types of areas that may be most vulnerable during riots and why this is the case, and when particular areas are likely to be at an elevated risk of this type of disorder.     

体检人群肝脂肪病变者中医脉象信号的递归定量识别与分析

目的 运用研究非线性动力学的递归定量分析(recurrence quantification analysis, RQA)方法对体检人群肝脂肪病变者的脉象信号进行分析,探讨脉象信号非线性动力学特征对肝脂肪病变的识别价值。方法 运用ZY-Ⅰ型脉诊仪采集体检人群的脉象信号,根据腹部超声报告将体检人群分为肝脂肪病变组和非肝脂肪病变组;提取体检人群脉象信号RQA特征,并运用非参数检验分析两组人群脉象信号的RQA特征差异;基于脉象信号RQA特征,运用随机森林机器学习方法建立体检人群肝脂肪病的识别模型,并通过评价指标准确率、精确率、召回率、F1值、受试者工作特征曲线(receiver operating characteristic curve, ROC)及曲线下面积(area under the curve, AUC)评估模型识别性能。结果 肝脂肪病变组脉象信号RQA特征递归率、确定性、对角线长度的均值、递归熵、层状度、竖直/水平线段长度均值和最长竖直/水平线段长度均高于非肝脂肪病变组(P<0.05);基于脉象信号RQA特征建立的体检人群肝脂肪病变识别模型,其准确率为80.34%,精确率为...     

National-Level Family Policies and workers’ Access to Schedule Control in a European Comparative Perspective: Crowding Out or In,and for Whom?

Abstract

This paper examines national-level family policies in a comparative perspective, to see whether they “crowd out” company-level family-friendly policies, namely schedule control. Further, it examines whether this relationship varies for different types of family policies, and for different groups of workers – i.e. distinguished by gender, parenthood status and skill divisions. The paper uses data from 27 European countries in 2010, and applies multilevel random slopes models with cross-level interaction terms. Results show that generous national-level family policies, in particular work-facilitating policies, “crowd in” company-level schedule control provisions, especially for high-skilled workers. However, very generous leave entitlements seem to crowd out schedule control provision.     

传染性腔上囊病病毒VP3蛋白模拟表位的筛选

为了研究传染性腔上囊病病毒(IBDV)的致病机理及研制有效的IBDV疫苗,利用噬菌体展示技术对IBDV VP3抗原表位进行了筛选。以4株IBDV VP3单克隆抗体HRB-3F、HRB-7B、HRB-7C和HRB-10E作为筛选分子,对噬菌体随机15肽库进行3轮吸附-洗脱-扩增淘洗,从每株单克隆抗体筛选到的噬菌斑中随机挑取20个单克隆噬菌斑,通过间接ELISA和竞争抑制ELISA检测,共选出13个单克隆噬菌斑,经噬菌体gⅢ部分基因的核苷酸序列测定,确定了8个15肽为IBDV抗原表位。这8个15肽在一级结构上没有3个以上连续氨基酸与IBDV Gx(Gen-Bank登录号:AY444873)VP3的氨基酸序列相同,但二级结构上均以β折叠为主,并且与单抗的结合可被VP3蛋白有效地抑制。证实,筛选的是IBDV VP3的模拟表位。     

Evaluation of 96 SNPs in 14 populations for worldwide individual identification

Great advances have been made recently in searching for individual identification single-nucleotide polymorphisms (IISNPs or IDSNPs). Such SNPs as suggested by SNPforID scientists and by Pakstis et al., are promising, although they were selected from older or smaller databases rather than the most recent database. Here, we describe a new computational strategy for developing IDSNPs based on HapMap. We searched through HapMap r27 for SNPs having minor allele frequencies ≥0.30 in all its 11 populations and found more than 1881 qualified SNPs. We examined 96 of them with 183 DNA samples from three Chinese populations using Illumina arrays. The average allele frequency for these 96 SNPs among the three populations was 0.495/0.505, the average number of identical SNP genotypes shared by two individuals among the 14 populations (three Chinese and 11 HapMap) was 37.9, and the random matching probability for two unrelated Hans to match in all 96 genotypes was 9.793 × 10(-39). Thus, most of these 96 SNPs are universally applicable.     

Financial Liberalization and Stock Price Behaviour in Asian Emerging Markets

This paper exhibits tests of the random walk hypothesis and market efficiency for seven Asian emerging markets as a result of the influence of financial market integration. Random walk properties of equity prices influence the return dynamic and determine the trade strategies of investors. To examine the stochastic properties of local index returns and to test the hypothesis that stock market prices follow a random walk, the single variance ratio tests of Lo and MacKinlay, as well as the multiple variance ratio test of Chow and Denning are employed. The multiple statistical comparison of variance ratios is based on the Studentized Maximum Modulus distribution with control of the joint-test’s size. The weak-form market efficiency is also tested directly, using a nonparametric runs test. These tests are particularly useful for investigating stock prices the returns of which are frequently not distributed normally. Documented evidence shows that, from the perspective of local investors, weekly stock prices in major Asian emerging markets do not follow a random walk in the pre-liberalization period. However, in the post-liberalization period the weak-form efficiency hypothesis is generally adopted at the 5% level except for the smaller stock markets of Indonesia and Thailand. These empirical findings suggest that financial integration affects the return predictability in such a way that domestic investors might not be able to develop trading strategies allowing them to earn abnormal returns.     

浅谈应用二漫法拍摄强反光物体上的疑难指纹

在刑事案件的现场拍照和物证检验照相中,经常会遇到一些遗留在平面强反光物体上的反差微弱的疑难指纹,拍摄难度很大。采用二漫法来加强这类指纹痕迹与承受载体之间的亮度差,显露指纹,简便易行,效果良好。应用二漫法拍照要求选用适宜的照相器材,掌握正确的操作方法,方可获得良好的拍摄效果,改善指纹痕迹的检验条件。     

The Sound of Rebellion: Voting Dissent and Legislative Speech in the UK House of Commons

Using data on the content of debate associated with votes in the UK House of Commons from 1992–2015, this article examines how government party MPs employ language in legislative speech when they vote against the party line. We find a robust statistical association between dissent on votes and the use of first-person pronouns, simpler language, and giving longer speeches. Using a random forest algorithm for classification, we find that these language covariates are predictive of rebellion. The use of simpler, first-person language has implications for political representation and offers new insight into how MPs use votes to distinguish themselves from their party, perhaps reflecting attempts to connect with constituents.     

ANTISOCIAL BEHAVIOR AND YOUTH GANG MEMBERSHIP: SELECTION AND SOCIALIZATION

We examine whether gang membership is associated with higher levels of delinquency because boys predisposed to delinquent activity are more likely than others to join. We use 10 years of longitudinal data from 858 participants of the Pittsburgh Youth Study to identify periods before, during and after gang membership. We build on prior research by controlling for ages and calendar time, by better accounting for gang memberships that occurred before the study began, and by using fixed effects statistical models. We find more evidence than has been found in prior studies that boys who join gangs are more delinquent before entering the gang than those who do not join. Even with such selective differences, however, we replicate research showing that drug selling, drug use, violent behaviors and vandalism of property increase significantly when a youth joins a gang. The delinquency of peers appears to be one mechanism of socialization. These findings are clearest in youth self-reports, but are also evident in reports from parents and teachers on boys' behavior and delinquency. Once we adjust for time trends, we find that the increase in delinquency is temporary, that delinquency falls to pre-gang levels when boys leave gangs.