Transnational youth transitions: becoming adults between Vancouver and Hong Kong

In the context of the academic interest shown in the enduring transnationalism of contemporary migrants and in the modes of transitions to adulthood in different global settings, in this article we examine the transnational lives of adolescents moving between Vancouver (Canada) and Hong Kong. While there is a lot of literature on the parents' political and economic calculations, there is very little on how adolescents in these situations articulate their geographical sensibilities. We draw on three periods of fieldwork undertaken in 2002, 2008 and 2010 during which we employed a transnational methodology to interview young people in Vancouver and Hong Kong. We argue that becoming an adult involves a process in which, in their discussions about the geographical and emotional distance between themselves and their families, young people articulate their own complex emotions towards specific places in their transnational social field. Their families sporadically interrupt the adolescents' otherwise independent lives with fragmented modes of supervision. By examining the complex intentions and emotions behind circular migration from the perspective of transnational youth in a community of split families, we advance the discussion on transnational geographies, particularly of the family in the context of a flexible global economy.     

Reasons for Starting and Continuing Gambling in a Mixed Ethnic Community Sample of Pathological and Non-problem Gamblers

Very few studies have investigated motivational differences between pathological gamblers (PG) and non-problem gamblers (NPG), or between men and women. Motives for starting gambling have not been distinguished from motives for continuing gambling. From a community survey questionnaire listing reasons generated from the population studied, the motives of 103 current PG met the DSM-IV-TR criteria of five or more symptoms within the 12 months to October 2004. NPG assented to less than three symptoms. Generally, PG had significantly stronger motives than NPG and preferred continuous forms of gambling. There were no overall gender differences in motives, but electronic gaming machines and bingo were the primary choices for female PG. Gambling to escape from stress and troubles increased for PG but not for NPG, while gambling for social reasons decreased for both groups. Because of disproportionate numbers of PG and NPG in the Caucasian, Maori, Pacific Island and Asian groups, ethnic differences were not examined. The findings supported some aspects of theories of gambling motivation. Lowering stress for PG, raising community awareness of the risk of gambling to socialize and undertaking longitudinal research in community samples were suggested.     

Efficiencies of maximum likelihood estimators under censoring in life testing

In some life tests, exact failure times cannot be observed, because of cost or time constraints. Assuming an exponential distribution with mean on the lifetimes, we study the e ects of type I and type II censored sampling schemes on the estimation of . In particular, the Fisher information, the expected duration of the life test and the mean squared error of the maximum likelihood estimators of under the two types of censored sampling scheme are compared. A simulation study is conducted to study the robustness of the estimators.     

考虑采购资金约束的物流服务能力采购决策

以物流服务供应链为研究对象,研究集成商期初时期对服务能力批发量和期权预订量的决策、需求即将发生时期对期权执行量的决策以及需求确定时期对现货采购量的决策,构建在无采购资金约束条件下集成商的采购决策模型,求得服务集成商3个时期的采购决策.然后引入采购资金约束,分析存在采购资金约束情况下集成商各个时期的采购策略,并对比有无采购资金约束条件集成商采购策略的不同,分析采购资金约束对集成商采购策略的影响.最后,通过数据分析对研究结论进行说明和验证.     

考虑采购资金约束的物流服务能力采购决策

CEO关联是影响企业内部决策效率和企业绩效的重要因素之一。已有研究大多集中于社会网络关系和人口统计特征相似性产生的关联,忽略了CEO雇佣高管或建议提名董事产生的关联。此外,已有研究过度关注对CEO关联结果的探讨,而忽略了内外部环境要素对CEO关联结果的影响。 在此背景下,基于高层梯队理论、现代管家理论和代理理论,从管理者特质和权力的视角,探讨基于雇佣高管或建议提名董事产生的CEO关联的差异对企业绩效的影响机理。以2009年至2014年沪、深两市A股上市公司数据为研究样本,运用STATA 12.0和多元回归分析方法,系统分析并检验基于雇佣高管或建议提名董事产生的CEO关联与企业绩效之间的关系,并进一步考察企业内部治理对这种CEO关联与企业绩效之间关系的调节效应。 研究结果表明,CEO与其他高管之间基于雇佣关系产生的关联与企业绩效之间呈现显著的倒U形关系,即随着CEO与其他高管之间关联的增强,企业业绩提升,但当CEO与高管之间的关联程度高于临界值0.400时,随着CEO与其他高管之间关联程度的增强,企业业绩开始下降;CEO与董事之间基于建议提名关系产生的关联与企业绩效之间没有显著的相关关系;股权集中度、董事会勤勉程度和监事会监督力度等企业内部治理机制对CEO和其他高管之间基于雇佣关系产生的关联与企业绩效之间的关系有显著的正向调节作用。民营控股上市企业中CEO和其他高管之间基于雇佣关系产生的关联与企业绩效之间的倒U形关系以及内部治理机制的正向调节作用均显著,而国有控股上市企业中CEO关联与企业绩效之间没有显著的相关关系。 研究结果对深入认识CEO关联的价值效应及形成的内在逻辑、防范上市企业治理风险提供了有益启示。建议上市公司适度给予CEO聘任高管的权力,且在公司治理实践中注意运用和平衡企业内部正式机制与非正式机制之间的潜在替代关系,保障差异化情景下企业潜在收益的最大化。