航运供应链上的品牌价值、公平关切与契约协调

航运供应链上的船公司提高企业品牌价值需要付出大量的投资成本,因此将会更加关注供应链上利润分配的公平。本文以单个船公司和单个货代公司构成的两级航运供应链为研究对象,运用博弈论分析船公司的公平关切行为和品牌投入意愿对航运供应链上各方利润的影响,探讨决策者非理性条件下航运供应链的合作模式和协调机制。研究表明：1）船公司的公平关切提高了其在供应链上利润分配占比,但降低了整个航运供应链的利润和效率;2）随着品牌投入意愿的提高,船公司的公平关切对航运供应链上各方决策的负作用就越明显;3）"收益共享成本共担"式契约能够消除公平关切的负作用,达到航运供应链纵向联盟的最优收益和整体效率。     

考虑消费者策略行为的供应链两周期定价与契约设计

针对由一个制造商与一个零售商构成的供应链,考虑消费者的策略性跨期购买行为,构建了两周期动态博弈模型,分析了消费者策略性程度对两周期均衡结果、消费者剩余和社会福利的影响,比较了分散式与集中式决策的均衡偏差,设计了与消费者策略性程度相关的两周期收益共享契约与"两周期收益共享+转移支付"组合式契约。研究表明：分散式决策下,消费者策略性程度有利于增加消费者剩余和社会福利,但会对供应链成员不利;某些情形下,消费者策略性程度会使分散式与集中式决策的系统利润差值增大;当消费者策略性程度相对较低时,两周期收益共享契约不仅可实现供应链完美协调,还可增加消费者剩余和社会福利;当消费者策略性程度较高时,通过组合式契约可实现供应链完美协调,但此时消费者策略性程度的增强可能对消费者剩余和社会福利产生负面影响。     

零售商的资金约束对协调契约的影响分析

在零售商促销下,探讨了零售商的资金约束对使用收益共享契约和回购契约协调供应链的影响。分析了零售商拥有不同运营资金下供应链的契约协调问题,研究表明：在运营资金相对充裕下,收益共享契约不仅能协调供应链,且能实现渠道收益的任意分配,但回购契约不能实现渠道收益的任意分配,除非运营资金非常充裕;在运营资金不足下,收益共享契约仍有可能协调供应链,但回购契约不能协调供应链。讨论了资金的时间价值对两个契约协调供应链的影响,结果表明：在回购契约下,资金利率越大,具有资金约束零售商的供应链被协调的可能性越大,但资金利率对收益共享契约没有影响。最后提供了数值分析。研究中得到一些管理启示,可为资金约束供应链的协调管理提供理论借鉴。     

共享经济外部影响定量研究综述

共享经济(sharing economy)作为一种新的经济业态,给消费者、企业、共享平台等市场参与主体带来深远影响的同时,也产生若干社会问题.关于共享经济所造成的外部影响,经济与管理学科领域的定量研究成果快速增长,但缺乏系统而全面的梳理.综合整理共享经济现有理论(解析)类和实证类定量文献,从消费者、企业、共享平台与社会这四个视角对共享经济的外部影响进行梳理、归纳及展望,为国内学者展开更深层次的研究提供思路,为企业、平台及政策制定者科学决策提供参考,助力共享经济的理论研究与科学实践.     

化被动为主动:共享型领导对员工主动变革行为的影响及作用机制研究

如何让员工将其工作角色外的行为,如主动变革行为,视为其角色内的行为越来越受到学者和管理者的关注。主动变革行为是指个体通过自愿的和建设性的努力来影响组织功能改变的行为,属于一种挑战性的组织公民行为。尽管以往研究对员工主动变革行为的影响因素进行了一些探讨,但主要聚焦于正式垂直领导和个体因素,鲜有研究关注团队情景因素对其的作用效果。通过问卷调查法,以69个部门和262名员工的配对数据为样本,本研究考察了共享型领导对员工主动变革行为的影响及作用机制。跨层次分析结果表明:(1)共享型领导对员工主动变革行为有积极影响;(2)主动变革行为的角色定义与和谐工作激情会分别中介共享型领导与员工主动变革行为之间的关系;(3)领导-成员交换质量会分别调节共享型领导与员工角色宽度自我效能与和谐工作激情之间的关系,领导-成员交换质量越高,共享型领导对员工角色宽度自我效能与和谐工作激情的积极作用越显著;(4)领导-成员交换质量会调节共享型领导通过角色宽度自我效能对员工主动变革行为的间接作用,领导-成员交换质量越高,这一间接作用越显著。     

Age at migration,family instability,and timing of sexual onset

This study builds on and extends previous research on nativity variations in adolescent health and risk behavior by addressing three questions: (1) whether and how generational status and age at migration are associated with timing of sexual onset among U.S. adolescents; (2) whether and how family instability mediates associations between nativity and sexual debut; and (3) whether and how these associations vary by gender. We find that first- and second-generation immigrant youth initiate sexual activity later than native youth. Foreign-born youth who migrate after the start of adolescence exhibit the latest sexual onset; boys’ sexual behavior is particularly sensitive to age at migration. Parental union stability is protective for first- and second-generation youth, especially boys; however, instability in co-residence with parents accelerates sexual debut for foreign-born girls, and dilutes protections from parental marital stability. Use of a non-English language at home delays sexual onset for immigrant girls, but not boys.     

Paternal incarceration and child-reported behavioral functioning at age 9

Within the last few decades our understanding of the importance of non-cognitive skills for socioeconomic success has grown along with our knowledge of the deleterious impacts of paternal incarceration for child wellbeing. Given the importance of early skills and that elementary-aged children constitute the majority of children with incarcerated parents, understanding the connection between paternal incarceration and the socio-emotional component of children’s non-cognitive development is pressing. Using matching models, data from the newest wave of the Fragile Families and Child Wellbeing Study, and exploring a larger range of behavioral skills than previous literature, this paper provides estimates of the impact of paternal incarceration on children’s behavioral functioning at age 9 using children’s own self-reports. Comparisons to oft-used parent reports are made and heterogeneity by gender is explored. Findings suggest the incarceration of a father increases the antisocial behaviors children self-report, but has null effects on prosocial skill development.     

Specificity of Performance Feedback in a Professional Service Delivery Setting

Although feedback is one of the most widely used intervention strategies, data on the specificity of effects has been sparse. The current study examined the effects of individualized public feedback on maintenance of client charts by therapists in a clinic setting. Four types of charting errors were tracked throughout the study. In Phase 1, feedback on two types of charting errors was provided and withdrawn in an ABA fashion. Phase II was a systematic replication of Phase I, using a second group of therapists, in which feedback was provided on the other two types of charting errors in an AB fashion. Results showed that feedback affected only those errors on which it was provided, thus supporting a specificity view of feedback effects. It is suggested that target behaviors be carefully selected and that generalization of feedback effects be assessed and not assumed.     

Parenting stress and behavior among single mothers of preschoolers: The mediating role of self‐efficacy

Abstract

This study examines the role of perceived self‐efficacy in mediating relations between mothers’ parenting behavior and variables such as maternal employment status, depressive symptoms, parenting stress, and child behavior problems. Subjects were 93 employed and 95 nonemployed, single, black mothers of a 3–5‐year‐old child who were current and former welfare recipients. Using linear structural relations modeling (LISREL), the findings support a model whereby (a) the more behavior problems the child is perceived to have, the more depressive symptoms the mother feels; (b) the more depressive symptoms the mother feels, the more likely she is to rate herself high in parenting stress; (c) the more depressive symptoms and parenting stress the mother experiences, the lower is the mother's estimate of her self‐efficacy; and (d) the lower the mother's self‐efficacy, the less competent is her parenting. The findings for employment status are similar; i.e., maternal employment predicted a trajectory leading to somewhat better parenting. In addition, child behavior problems were associated with less competent parenting both directly and indirectly through their effect on parenting stress and self‐efficacy. These results suggest that self‐efficacy has import as a mediator of the relations between maternal parenting and other psychosocial variables. There is no evidence, based on these findings, that employment in the low‐wage market is harmful either for single black mothers or their preschool children. However, job availability and an increase in the minimum wage are important policy considerations.     

Gender‐specific or Common Classroom Norms? Examining the Contextual Moderators of the Risk for Victimization

We tested whether gender‐specific vs. common classroom norms were more powerful moderators of the association between a risk factor (rejection) and peer victimization among girls and boys. The participants were 1220 elementary schoolchildren from grades 4–6 (with 10–13 years of age). We compared different multilevel models including combined vs. separate regressions for boys and girls, as well as the effects of norms of the whole class, same‐sex classmates, and cross‐sex classmates. Among girls, the association between rejection and victimization was strongest in classes where bullying behavior was common, and anti‐bullying attitudes were rare among girls. Among boys, the strength of the slope of victimization on rejection could not be explained by either common or gender‐specific classroom norms, but boys' level of bullying behavior was related to overall classroom level of victimization. The findings suggest that contextual factors may contribute to victimization especially among high‐risk girls. The importance of exploring multiple levels of influence on children's social development is discussed.