Three‐period,two‐treatment crossover design under long‐term carryover effect

The paper describes non‐parametric approach for analysis of a three‐period, two‐treatment, four‐sequence crossover design in which test procedure for interchangeability of the treatment effects is obtained. The proposed procedure is based on a non‐parametric model, which incorporates, along with the direct treatment effects and the usual carryover effects, the long‐term carryover effects. Relevant competitors are obtained. Related asymptotic results are given. By performing simulation study, we compared the procedures with respect to type I error rate and power. Furthermore, confidence intervals for treatment differences are studied. The procedures are illustrated with a data study.     

分布式数据库技术在铁路局供电管理中的应用

郑州铁路局在电气化铁道的供电系统中应用“铁路牵引供电管理信息系统”(EMIS)实现了联网管理、信息共享。对于这种异地数据的应用处理面临着数据同步、数据共享、并行处理、数据传输等4个主要问题,为此EMIS采用了适合于现有网络条件的分布式数据库技术。在分析分布式数据库面临的安全问题的基础上,介绍了EMIS采用的安全保密措施,并针对其不足提出了有关建议措施。     

Measuring the persistence of deviations from purchasing power parity with a fractionally integrated STAR model

Empirically, elements of both fractional long memory and threshold non-linearity are present in the real exchange rates of the G-7 countries against the US, notably in the EU countries. Estimated half lives of deviations from PPP using median unbiased corrections to conventional linear autoregressive models corroborate existing evidence related to the PPP paradox as half lives range from at least four years to an infinite number of years. In contrast, for each EU country, accounting for threshold non-linearity results in estimated half lives that can be less than three years even with the allowance for fractional long memory.     

辽宁高端装备制造业技术创新联盟的公共政策研究

辽宁高端装备制造业近几年发展迅猛,围绕区域产业集群初步形成了一些技术创新联盟,但由于缺乏有力的公共政策支持,技术创新联盟不能真正发挥应有作用。从研究标准联盟公共政策的影响因素入手,提出了适合辽宁高端装备制造业技术创新联盟组建和发展的公共政策建议,这些政策建议可以促进辽宁高端装备制造业技术创新联盟迅速壮大,提高技术创新联盟的竞争力。     

装备制造企业动态能力评价及其实证研究

阐释了装备制造企业动态能力的概念内涵与构成要素,设计出由市场感知、组织学习、资源获取、重构与转变、协调与控制5个动态能力一级指标和20个二级指标组成的评价指标体系,采用AHP法确定指标权重。针对指标度量的模糊性与不确定性,建立了证据推理的数据融合方法,并对江淮汽车集团动态能力进行了实证分析。     

Public Disclosure of Audit Fees and Bargaining Power between the Client and Auditor: Evidence from China

Before the public disclosure of audit fees was mandated, it was unlikely for an audit client to have accurate information about how much other companies were charged by their auditors. Public fee disclosure decreases the cost of auditees' access to audit fee information for the auditor's portfolio of clients and is thus likely to increase the relative bargaining power of auditees over auditors when they negotiate audit fees. Using both proprietary and public audit fee data before and after public fee disclosure was mandated in China, we provide evidence consistent with the preceding conjecture. We find that public fee disclosure reinforces the magnitude of audit fee decreases for overcharged clients and weakens auditors' ability to raise audit fees for undercharged clients. These findings suggest the existence of unintended consequences of public fee disclosure regulation, the original rationale of which was a concern about audit pricing practices that could undermine auditor independence.     

财务重述、管理层权力与股价崩盘风险：来自中国证券市场的经验证据

股市震荡引发投资者和监管层对股价崩盘风险的关注。从财务重述背后所反映的财务信息质量低下和公司治理失效出发,探讨其对股价崩盘风险的影响,结合管理层权力这一影响组织行为和产出能力的代理人特征,探讨其对财务重述与股价崩盘风险之间关系的影响。研究结果表明：相比未发生财务重述的公司,发生了财务重述的公司的股价崩盘风险明显更高;进一步纳入代理人特征———管理层权力后,发现代理人的这一特征对上述关系有明显的促进作用。     

The impact of abusive supervision and co-worker support on hospitality and tourism student employees’ turnover intentions in Ecuador

Ram (2015. Hostility or hospitality? A review on violence, bullying and sexual harassment in the tourism and hospitality industry. Current Issues in Tourism. doi:10.1080/13683500.2015.1064364) posits that violence and harassment are areas of concern within the hospitality industry, and scholarly interest in abusive supervision in the workplace has grown since the last decade. This study extends Ram's (2015. Hostility or hospitality? A review on violence, bullying and sexual harassment in the tourism and hospitality industry. Current Issues in Tourism. doi:10.1080/13683500.2015.1064364) assertion by examining the effect of abusive supervision experiences on student employees’ turnover intentions in a hospitality and tourism context in a high power distance culture, Ecuador. The results showed that abusive supervision was positively related to turnover intentions, and its effect was stronger than co-worker support, with the abusive supervision–turnover intentions relationship being fully mediated by perceived organizational support (POS). In addition, co-worker emotional support was found to attenuate the negative effects of abusive supervision on POS. All in all, the findings highlight the roles of POS in explaining the relation between abusive supervision and turnover intentions and co-worker emotional support in buffering the negative effect of abusive supervision. The important role of culture is discussed.     

中国新能源企业创新绩效的影响因素——基于产业政策视角

以国家层面发布的、与新能源产业创新相关性最强的408条创新政策为研究对象,采用负二项回归模型,利用2007—2014年中国沪深两市中从事新能源产品生产的上市企业的数据,研究了产业政策(政策力度和政策连续性)对中国新能源企业创新绩效的影响。结果显示:环境保护政策力度和技术创新政策力度显著抑制了新能源企业的创新绩效,而产品创新政策力度显著激励了新能源企业的创新绩效;政策执行不连续会抑制新能源企业的创新绩效。最后提出了改进新能源产业创新政策体系的相关建议。     

基于云模型的装备制造业产业链风险评价

将云模型引入风险评价,对装备制造业风险等级进行量化。从产业链的视角,将专家调查法与熵权法相结合识别风险因素,将筛选出的具有显著影响的因素作为评价因子引入云模型,从而降低了风险评估结果的主观性。构建了产业链风险评价指标体系,提出了基于熵权-云模型法的风险评估方法,对装备制造业产业链风险进行了总体评估。通过分析评估结果,提出防范装备制造业产业链风险的对策建议。