前馈技术在改善功率放大器线性中的应用

推导并分析了存在增益和相位跟踪等误差情况下,功率放大器前馈技术对三阶线性失真的改善情况,并从原理上论述了前馈技术的工作原理.前馈技术一般可将三阶互调降低10～30 dB,在新一代的抗干扰跳/扩频电台中有广泛应用.     

Lord Acton and Employment Doctrines: Absolute Power and the Spread of At-Will Employment

This study analyzes the at-will employment doctrine using a tool that encompasses the complementarity of results-based utilitarian ethics, rule-based duty ethics, and virtue-based character ethics. The paper begins with a discussion of the importance of the problem followed by its evolution and current status. After describing the method of analysis, the central section evaluates the employment at-will doctrine, and is informed by Lord Acton’s dictum, “power tends to corrupt, and absolute power corrupts absolutely.” The conclusion explores the implications of the findings. This is a revised version of a paper presented at the World Ethics Forum, Oxford University, Oxford, UK April 9–12, 2006.     

上市公司CEO薪酬法律问题浅析

CEO是目前上市公司中普遍设立的职位,其高价的薪酬与普通职员相比差距悬殊。本文在介绍CEO薪酬基本构成的基础上,分析了我国CEO薪酬制度存在的问题以及国内相关法律规定的不足,并针对完善我国上市公司的CEO薪酬制度提出若干法律建议。     

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。     

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。     

CEO对企业战略选择的影响

企业战略是企业一切活动的出发点,是企业发展的灵魂和纲要,战略的好坏直接影响着企业是否可以不断成长,是否可以基业长青。战略的制定受企业外部环境、企业资源与能力状况等许多因素的影响,其中,企业的CEO对企业战略的制定、选择、实施等环节有着举足轻重的影响力。笔者首先分析了现有的对企业战略与CEO关系的学者观点;其次在分析案例的基础上提出了自己的认识;最后给出CEO选择的建议。