发电企业集团投资并购问题分析

在不断蔓延的“电荒”和国家电力公司实行拆分改革,引入竞争机制的刺激下,自2003年以来,我国电力建设投资开始高速增长。持续升温的电力投资,在暂时解决电力不足的短期问题的同时,对电力工业的合理布局和未来经济持续健康发展将造成后患。面对如火如荼的投资并购热潮,应科学地制定电力投资规划,保持合理地电力增长速度从而满足国民经济发展的需要。     

绿色制造的困境与政府监督机制分析

绿色制造是人类社会可持续发展的必然要求,然而绿色制造却面临着伦理约束和经济外部性的问题,造成了企业选择绿色制造模式的"囚徒困境"。制度约束和税收或补贴虽然一定程度上可以缓解这两个问题,但是政府的监督却是必不可少的。     

天津市电子信息产业攀升全球价值链战略研究

本土企业攀升全球价值链不仅是改变产业“低端道路”的路径依赖,也是发展中国家摆脱发达国家“俘获”的重要选择。以天津市电子信息产业为例,从跨国公司市场势力、产业链垂直预占及产业定位三个方面分析制约本土企业产业升级的因素。应明确产业定位、提升产业链创新能力、培育产业合作网络.     

求半正定Hermitian矩阵特征向量的改进乘幂法

经典乘幂法结合压缩法是计算半正定Hermitian矩阵最大前n个特征值对应特征向量的重要方法,但其固定的迭代次数使得待分解矩阵的随机变化和初始向量的不同选择导致计算精度波动较大,同时,较大特征值对应特征向量的计算误差也会影响较小特征值对应特征向量的计算。为克服这些缺点,提出了一种将前后两次迭代所求向量的距离作为迭代终止条件的改进乘幂法,并证明了它在有误差传播时的收敛性。理论计算结果表明,对4阶半正定Hermitian随机矩阵,在相同计算精度前提下,所提方法比经典方法可至少降低一半计算复杂度。     

不同调制方式下高斯信道容量的计算

计算不同调制方式下的信道容量对实际通信系统的信道编译码设计具有重要的理论意义。首先从Shannon信息论出发,介绍了平稳无记忆连续信道与加性白高斯噪声信道容量的定义。接着利用互信息与微分熵的相互关系,推导了几种常用的不同调制方式下高斯信道的容量,并给出了相应的信道容量闭合计算表达式。通过将电力卫星通信信道模拟为高斯信道,对采用无速率信道编码联合不同调制方式的卫星通信进行了数值仿真。仿真结果显示,通过推导得到的闭合表达式计算信道容量,能对实际卫星通信的编码速率、译码启动条件的确定起到很好的理论指导作用。     

Peers Versus National Culture: An Analysis of Antecedents to Ethical Decision-making

Given the recent ethics scandals in the United States, there has been a renewed focus on understanding the antecedents to ethical decision-making in the research literature. Since ethical norms and standards of behavior are not universally consistent, an individual’s choice of referent may exert a large influence on his/her ethical decision-making. This study used a social identity theory lens to empirically examine the relative influence of the macro- and micro-level variables of national culture and peers on an individual’s intention to behave ethically. Our sample consisted of respondents from Germany, Italy, and Japan. The results indicated that both national culture and peers were found to act as significant referents in ethical decision-making dilemmas. Although peers exerted a much stronger influence on an individual’s ethical decision-making, the impact of peers varied depending on the national culture levels of individualism and power distance. James W. Westerman is an Associate Professor of Management at Appalachian State University. He received his Ph.D in Management from the University of Colorado at Boulder and an MBA from Florida State University. His research interests include person-organization fit, compensation, and employee ethics, and has been published in the Journal of Organizational Behaviour, Journal of Business Ethics, Academy of Management Learning and Education, Group and Organization Management and the Journal of Business and Psychology, among others. Rafik I. Beekun (Ph.D., the University of Texas at Austin) is Professor of Management and Strategy in the Managerial Sciences Department at the University of Nevada. Reno, and Co-director, Center for Corporate Governance and Business Ethics. His current research focuses on business ethics, national cultures and the link between management and spirituality. He has published in such journals as the Journal of Applied Psychology, Human Relations, Journal of Management, Journal of Business Ethics and Decision Sciences. Yvonne Stedham is a Professor of Management in College of Business at the University of Nevada, Reno. She received a Ph.D. in Business and an MBA from the University of Kansas, Lawrence, Kansas and undergraduate degrees in Economics and Business from the University of Bonn, Germany. She joined the University of Nevada, Reno in 1988 and served as Chair of the Managerial Sciences Department from 1999-2002. Dr. Stedham's research covers a broad spectrum of management issues with a special focus on international, business ethics and gender aspects, and has been published in the Journal of Management. Women in Management Review, the Journal of Management Studies, the Journal of Business Ethics,the Journal of European Industrial Training, and the Journal of Knowledge Management Practice, Asia Pacific Journal of Human Resource, and others. Jeanne H. Yamamura, CPA, MIM, PHD, is Associate Professor at the University of Nevada Reno. Her research is focused in the area of the international management of accounting professionals and in ethical decision making. She has published in journals such as the International Journal of Accounting, the International Journal of Accounting, Auditing and Performance Evaluation and the International Journal of Human Resource Management.     

我国在铁矿石贸易谈判丧失“话语权”原因和对策

我国是国际铁矿石的需求和进口大国,可以说是市场需方的一个大寡头,但是在每次的国际铁矿石贸易价格谈判中处于几乎"失语"的尴尬处境。本文分析了其原因并为改善这种不利处境为我国钢铁企业提供参考对策。     

从草根版《学生教育惩戒法》解析教师惩戒权

一部草根版《学生教育惩戒法》反映了当前教师惩戒现状,进而解析教师惩戒权逐步消解的原因,探讨如何正视、解决教师惩戒的两难局面,以有效规避教育中惩戒过度与惩戒消解现象。     

指派问题的改进算法

指派问题是管理技术中的重要内容,指派问题的经典算法就是经典的匈牙利法。针对匈牙利法在处理有诸多指派问题的模型不能进行有效求解的情形,本文提出了匈牙利法的改进算法,并应用改进算法在人员任务分派等实例中进行了有效的求解,得到了优化分配的方案,说明模型算法的有效性和实用性。     

LTE-A D2D通信中的无线资源管理技术研究

本文在介绍LTE A蜂窝系统D2D通信技术原理的基础上,重点分析研究了其中的无线资源管理技术,包括模式选择技术、资源分配技术、功率控制技术等,并给出了基于分数频分复用的资源分配实现方案和以最大化网络速率和为目标的最优功率控制方案。