破坏型领导:何时危害性更大——关系取向及工具性对破坏型领导与强制性公民行为的调节作用

本研究通过配额样本探讨了破坏型领导和强制性公民行为的关系,并识别出了两个影响两者关系大小的权变因素.本文通过对同源偏差进行严格的事前和事后控制,保证了样本的有效性.研究结果表明:(1)破坏型领导与强制性公民行为正相关,并且相关系数大于西方研究.(2)关系取向反向调节了破坏型领导和强制性公民行为之间的关系.(3)工具性则对以上二者关系起正向调节作用.在人力资源管理启示中,我们讨论了本研究对管理实践的指导意义.     

Job stress,burnout and substance use among urban transit operators: The potential mediating role of coping behaviour

Abstract

Urban transit operators, compared to other occupational groups, have higher rates of mortality and morbidity. A major risk factor is the highly stressful objective environment. This study used structural equation modelling to test a model hypothesizing that transit operators’ coping behaviours in responding to daily job hassles mediate the associations of work stress with burnout and substance use. The study sample consisted of 1231 transit operators who participated in the San Francisco MUNI Health and Safety Study. The results showed a direct and strong association between transit operators’ daily job stress and symptoms of occupational burnout even when a series of controls and coping behaviours were considered. In addition, use of “disengage-deny” and escapist strategies to cope with job stress was positively associated with burnout; the job stress–burnout association was partially mediated through such coping practices. Daily job stress was related to substance use only indirectly and mediated through burnout and use of “disengage-deny” and escapist coping strategies. “Disengage-deny” coping strategies might help reduce substance use whereas escapist coping strategies might increase such use. Overall, our findings suggest that coping behaviour may be an important correlate of transit operators’ ill health. Interventions enabling healthy coping behaviours may help reduce health risks for this occupational group.     

New Data,Strategies, and Insights for Listeria monocytogenes Dose‐Response Models: Summary of an Interagency Workshop, 2011

Listeria monocytogenes is a leading cause of hospitalization, fetal loss, and death due to foodborne illnesses in the United States. A quantitative assessment of the relative risk of listeriosis associated with the consumption of 23 selected categories of ready‐to‐eat foods, published by the U.S. Department of Health and Human Services and the U.S. Department of Agriculture in 2003, has been instrumental in identifying the food products and practices that pose the greatest listeriosis risk and has guided the evaluation of potential intervention strategies. Dose‐response models, which quantify the relationship between an exposure dose and the probability of adverse health outcomes, were essential components of the risk assessment. However, because of data gaps and limitations in the available data and modeling approaches, considerable uncertainty existed. Since publication of the risk assessment, new data have become available for modeling L. monocytogenes dose‐response. At the same time, recent advances in the understanding of L. monocytogenes pathophysiology and strain diversity have warranted a critical reevaluation of the published dose‐response models. To discuss strategies for modeling L. monocytogenes dose‐response, the Interagency Risk Assessment Consortium (IRAC) and the Joint Institute for Food Safety and Applied Nutrition (JIFSAN) held a scientific workshop in 2011 (details available at http://foodrisk.org/irac/events/ ). The main findings of the workshop and the most current and relevant data identified during the workshop are summarized and presented in the context of L. monocytogenes dose‐response. This article also discusses new insights on dose‐response modeling for L. monocytogenes and research opportunities to meet future needs.     

Managing Downstream Competition via Capacity Allocation

Consider a supply chain with one supplier and multiple retailers. The supplier produces a single product and sells it to the retailers, who in turn sell the product to consumers. The supplier has limited production capacity, and the retailers are engaged in a Cournot competition at the consumer/market level. When the sum of the retailer orders exceeds the capacity, the supplier allocates her capacity according to a pre‐announced allocation mechanism. Two mechanisms are considered: proportional allocation and lexicographic allocation. An extensive study of the two allocation mechanisms shows that the lexicographic mechanism has the ability to dampen the competition at the retail level, increasing the profits for both the supplier and the supply chain.     

上市公司治理:理论与现实的距离——基于1250份上市公司“自查报告和整改计划”的分析

本文根据1250家上市公司所公布的"自查报告和整改计划",重点从大股东、董事会/监事会、经理层以及投资者法律保护等四个方面对"自查报告和整改计划"的调查问题进行全面归纳、整理、分解和剖析,通过统计分析和理论文献对比,综合反映出目前我国上市公司治理现状和问题.调查分析结果表明,虽然我国目前已基本上建立了一整套与上市公司治理相关的法律法规,上市公司在大股东、董事会、经理层和投资者保护等方面的行为得到了一定的规范约束.但是,我国上市公司治理仍然处在不断完善过程中,如何强化大股东的信托义务和法律责任,从根本上解决大股东侵占中小股东利益的问题、保证董事会制度的独立性和有效性、培育经理人市场,积极推进股权激励机制、落实投资者法律保护制度等成为今后完善我国上市公司治理的重要任务.     

顾客导向和创新导向对企业绩效的影响机制研究

在市场导向相关研究的基础上.本文探索了顾客导向(Customer Orientation)以及创新导向(Innovation Orientation)经由组织学习(Organizational Learning)对公司绩效(Firm Performance)的影响.通过对欧洲的390家制造企业的调查.发现顾客导向和创新导向都对组织学习产生正向影响,组织学习提高了公司的新产品绩效(New Product Performance).最终提升了公司绩效.最后,文章讨论了本研究的理论和实践意义,以及未来的研究方向.     

度量银行操作风险的POT幂律模型及其应用

本文在极值理论的POT模型基础上,建立了基于分维的POT幂律模型,给出了POT模型的阈值选择的理论解释,还给出了满足尾部分布适合幂律的条件.分析表明,此模型较已有方法能更方便地估计尾部参数,对小样本情形研究厚尾问题提供了新的思路.此外,为计算操作风险损失和的在险价值(VaR)问题,本文引入保险理论里的随机和模型,并给出了计算操作风险在险值的简化公式.     

企业信息技术能力及其对信息化成功影响的实证研究——基于RBV理论视角

本文研究目的是探讨企业信息技术能力的构成维度、概念测量以及其实现信息化成功的影响机制.基于我国信息化的实践,作者以企业资源理论(RBV)与以往文献为基础,研究并建立了信息技术能力及其对信息化成功影响的理论模型,认为IT基础设施、IT管理技能以及业务/IT之间关系能力三者共同交互并影响了信息技术在企业中的扩散与吸收.作者通过问卷调查法收集数据,运用结构方程模型进行实证分析,分步骤验证了信息技术能力的概念测量模型以及对信息化成功影响的结构关系模型.本研究将有助于指导企业识别和培育核心信息技术能力.从而实现信息化成功及其推动的持续竞争优势.     

高层管理团队内部社会资本、团队冲突和决策效果的关系——研究综述与理论分析框架

反映在结构因素、关系因素和认知因素三个维度上的高管团队内部社会资本为决策信息的交换和共享提供了机会、意愿和能力,有利于团队内部形成建设性的冲突模式,促进决策效果的提高.本文以团队冲突为中介变量,建立了高管团队内部社会资本与决策效果的关系的理论框架,提出了研究命题,并对企业高管团队内部社会资本的培育提出建议.     

企业动态能力及其功效:环境不确定性的影响

当前关于动态能力的维度及其功效还存在较大分歧,有些学者甚至认为动态能力毫无价值,应该摒弃动态能力研究.本文从战略过程视角,依据相关文献与访谈调查,将动态能力分解为组织意会能力、柔性决策能力及动态执行能力,探讨了动态能力与持续优势的关系及环境不确定性在其中的影响作用.通过对中国地区217家企业的实证研究发现,动态能力确实对持续优势有显著的正向影响,环境不确定性是动态能力的驱动因素而非调节变量,环境动态性对企业持续优势有显著的正向影响,敌对性则对持续优势有显著的负向影响.本研究的结论澄清了动态能力的价值前提,探明了环境不确定性的影响机理,对理论研究与实践操作都有一定的启发意义.