“X-非效率”与电网企业经营绩效评估

评价自然垄断的效率问题不能仅从理论出发,而要从电网企业实际经营绩效判断。国家电网公司经营绩效评估可以按市场活力、技术创新、内部管理、社会责任4个领域的指标进行分析,可进一步细分为24个子指标。绩效评估指标体系的实证分析表明,国家电网公司的经营绩效为较好,至少并不存在所谓的“X-非效率”问题,也反映了政府对电网企业的监管是有效的。未来改革的关键不在于打破垄断或者输变电一体化与否,而在于继续完善监管体系、进而形成更加富有激励的制度安排。     

Organizational learning and market orientation: interface and effects on performance

This paper discusses the relationship between market orientation and organizational learning and, in particular, the former's contribution to the generation of double-loop learning. Although prior contributions on this topic have been controversial, the authors, departing from the principles of RBV, consider market orientation a resource capable of generating higher order organizational learning and, in this way, capable of additionally reinforcing firms' sustainable competitive advantage. The empirical study provides evidence on the existing relationship between a firm's learning and market orientation degree and the organization's economic and non-economic results. Findings indicate that learning orientation stimulates the market-oriented behavior and that it also positively affects the establishment of long-term relationships with strategic clients. Contrary to prior research a significant and positive effect on business performance is only contrasted in the case of market orientation.     

Product and environmental social performance: Varying effect on firm performance

Corporate social performance (CSP) consists of actions in different domains that vary in the information they provide stakeholders, and hence, in their effect on firm performance. To demonstrate this, the authors examine the impact of CSP on firm performance in two areas—the product and the environment, referred to as product social performance (PSP) and environmental social performance (ESP), respectively. PSP has a stronger positive impact on firm performance compared to ESP. The findings using disaggregated measures of PSP and ESP indicate negativity bias in that PSP weakness has a stronger negative impact on firm performance compared to PSP strength. Copyright © 2013 John Wiley & Sons, Ltd.     

我国上市公司再融资与财务业绩动态变化研究

本文对上市公司再融资的3种形式及对财务业绩在时间上的变化进行了分析，提出了无论配股、增发新股、发行可转换债3种方式对财务指标的影响是下滑的，而对企业的核心业务是增强的，但不显著。发行可转债优于配股和增发。     

工会承诺、组织承诺和员工绩效——被企业所有制类型跨层次调节的中介模型

基于我国工会维稳与维权的双重角色,要发挥工会预防劳资矛盾激化的功能,并履行集体劳动争议代表的责任,需要研究工人是否对工会有承诺,以及这种承诺与组织承诺和员工绩效的关系。鉴于不同所有制企业工会的差异,文章基于角色理论、认知理论和交换理论,针对员工的工会承诺、组织承诺和绩效之间的关系展开研究,研究中使用了32家企业共709个员工样本的嵌套数据建立了不同所有制企业跨层次被调节的中介模型进行假设验证。研究结果表明：工会承诺正向影响组织承诺,组织承诺在工会承诺和员工绩效关系中起中介作用,并且该中介作用在公有制企业中较强,在非公有制企业中较弱。文章最后对实证分析部分进行了讨论,并指出未来研究方向。     

环境动态、资本结构和经营业绩——来自我国上市公司的证据

从战略的角度,将资本结构与公司所处的环境特征联系起来,选取了1997年以前在我国沪、深证券交易的上市的309家公司,获得1997~2006年的数据,运用多因素回归和单因素回归模型检验了环境动态、资本结构和经营业绩之间的关系,为我国上市公司资本结构决策制定的全面性和合理性提供了实证依据。     

变速率部分更新盲均衡算法

对于长抽头系数自适应算法,基于最大化自适应滤波器系数误差向量原则的变速率部分更新算法,能够在大幅度降低算法实现复杂度的同时,解决部分更新算法收敛速度慢的问题。但是,该变速率算法仅适用于LMS结构,对于具有非线性代价函数的部分更新自适应盲均衡算法并不适用。基于同样的最优化思想,通过替换步长计算表达式中的部分统计量,提出了能够适合于部分更新多模盲均衡算法(MMA)的确定性变步长控制算法,并通过递归的方式计算步长值,简化了实现过程。对固定信道和时变信道的数值仿真结果表明,新算法相比传统基于收敛误差的经验性变步长算法具有更快的收敛速度和更好的跟踪性能,有效解决了部分更新自适应盲均衡算法的确定性变速率控制问题,提升了算法的收敛速度和跟踪性能。     

基于径向基神经网络的物流绩效评价方法

在分析物流绩效关键影响因素基础上,提出采用径向基神经网络模型应用于物流绩效评价测试。以多个主要影响因子为网络的输入信息,建立物流绩效综评遗传神经网络模型,采用正交最小二乘法进行学习训练,进行不同综合评价方法对比。     

Wolf in Sheep's Clothing: The Active Investment Strategies behind Index Performance

This paper argues that the commonly used market indices imply forms of active investment management in disguise. The selection and rebalancing rules make these indices highly exclusive and dynamic regarding their underlying components and significantly bias their performance. Any passive investment tracking these indices turns into an active strategy characterised by market timing and state‐dependent performance. Evidence is provided that exclusive indices outperform (underperform) more inclusive peer indices in upward (downward) markets. The constitution and maintenance rules of exclusive indices correspond to a set of active trading and investment rules similar to momentum strategies.     

Monetary integration vs. real disintegration: single currency and productivity divergence in the euro area #

Productivity slowdown plays a prominent role in the build-up of the euro area crisis. This phenomenon affected member countries asymmetrically, causing divergence in their productivity trends. Recent research traces this divergence back to monetary integration. After reviewing the arguments that link real “disintegration” of the euro area to its monetary integration, we assess them empirically by modelling the evolution of labour productivity using a panel of sectorial data. The results indicate that monetary unification may actually have fostered divergence in productivity trends, and suggest some economic policy measures that could prevent further divergence.