中日韩电信产业价值链模式对比分析

目前移动数据业务成为运营商利润的增长点,而发展数据业务关键在于处理与产业价值链各环节之间关系,在这方面日韩两个国家发展比较成熟。分析日韩电信产业价值链模式的特点,并与国内的几种价值链模式进行对比,从客户目标、SP/CP管理、与终端关系、利益分成与环境适应性等几个方面总结出我国电信产业价值链和谐发展的对策建议。     

Two dimensional bidding in land use

The Chinese first land use right transferring case by competitive bidding on both land price and housing price is studied. Based on game theory, we generalized the bidding rules. Firstly, the attributes used in the scoring rule should have little correlative. Secondly, the attributes＇ reference point values used in the scoring function may be acquired by information fusion methods. After removing extreme values from the scoring function, the odd result of the studied case could be avoid.     

A hybrid heuristic algorithm adopting both Boltzmann function and mutation operator for manufacturing cell formation problems

This study proposes a hybrid heuristic algorithm employing both the Boltzmann function from simulated annealing and the mutation operator from the genetic algorithm to explore the unvisited solution region and expedite the solution searching process for the cell formation problem, so that grouping efficacy is maximized. Test problems drawn from the literature are used to test the performance of the proposed heuristic algorithm. The comparative study shows that the proposed algorithm improves the best results found in the literature for 36% of the test problems in the case when singletons solutions are allowed.     

移动通信运营商CRM系统实施探讨

目前移动通信运营商的核心竞争力已从规模投资转向市场营销与管理水平的提高,如何保留住既有客户并由这些客户获得最大的收益,已成为移动通信市场重要的课题。文章通过对移动通信运营商实施CRM系统的必要性研究,尝试对移动通信运营商如何有效实施CRM系统进行分析与探讨,提出CR     

Comparing Operational Efficiency of Mobile Operators in Brazil, Russia, India and China

Using partial factor productivity and data envelopment analysis approaches, this study measures and compares the operational efficiency of the 10 dominant mobile operators in Brazil, Russia, India and China （BRIC） between 2002 and 2006. The results of data envelopment analysis indicate that the two leading Brazilian mobile operators, Vivo and TIM, are fully efficient throughout the entire period of study, however, Indian mobile operators are the least efficient among BRIC operators. Interestingly, the findings of this study verify that full operational efficiency can be achieved by operators with large revenues, such as China Unicorn, and by other, y with medium and small revenues, such as Hvo, TIM and Oi. Partial faetor productivity demonstrates that 3 of the 4 Brazilian mobile operators, Vivo, TIM and Oi, have remarkable productivity ratios, and that the state-owned operator, China Unicom, has the highest revenue per capital expenditure among BRIC operators. In contrast, Indian mobile operators ＇productivity ratios are generally low compared to other BRIC mobile carriers.     

Cash Stream Valuation In the Face of Transaction Costs and Taxes

The usual notion of every future cash stream having a net present value determined from a single term structure breaks down when transaction costs are taken into account, especially the sizable costs associated with short-borrowing. the difficulties are compounded by taxes, which can lead to paradoxes of disequilibrium if elementary NPV is assumed to be a rational basis for decision making. This paper systematically develops a theory of valuation which overcomes these shortcomings by accepting the multiplicity of no-arbitrage term structures that may be present for each tax class of investors, and uses the entire set of them to impute both a "long price" and a "short price" for every cash stream, regardless of the sign of the future payments. the valuation operators giving these prices are nonlinear but readily calculated from linear programming formulas.     

Organizations and overlapping generations games: Memory,communication, and altruism

This paper studies the role of memory and communication in overlapping generations (OLG) games between ongoing organizations. In each organization, each individual, upon entry into the game, replaces his predecessor who has the same preferences and faces the same strategic possibilities. An individual has no prior memory - that is, he does not directly witness the events that occur before his tenure. Instead, each individual relies on information about the past from his predecessor via cheap talk. This paper highlights the role of communication as a surrogate for memory.It has been shown elsewhere that Folk Theorems hold in OLG games with long enough lived individuals who can perfectly observe the past. However, the Folk Theorem fails for many games when individuals have no prior memory. We show that for OLG games without prior memory but with costly communication, a Folk Theorem holds only when there is some altruistic link between cohorts in an organization. Our main result asserts that if communication costs are sufficiently small, or if altruistic weights on successors are sufficiently large, then a strongly stationary Folk Theorem (i.e., equilibrium payoffs are time invariant) obtains if a managers message is public information. The equilibria in this Folk Theorem require a special form of intergenerational sanctions. In these sanctions, punishment is sometimes carried out long after both victim and perpetrator have left the game. Without this special structure, altruism may in fact destroy cooperation when it would otherwise be possible.Received: 18 April 2003, Accepted: 20 October 2003, JEL Classification: C72, C73, D74, D82We have benefitted from helpful comments and conversations with Luca Anderlini, Kirk Bailey, Hans Haller, Matthew Jackson, and Takashi Shimizu, and numerous seminar participants. This research is partially supported by the National Science Foundation, and by grants-in-aid for scientific research of the Ministry of Education of Japan. Of course, any remaining error is our own.     

现代公司治理危机再分析

所有权与经营权的分离问题 ,在上世纪 30年代由伯勒 (Berle)与米恩斯 (Means)成功地引入到现代企业理论的核心。其主要思想为 :所有权与控制权的分离产生了一个条件 ,其中所有者的利益与最终经营者的利益可能往往背道而驰。并由此产生了旨在实现所有者利益最大化的针对经营者的激励机制。Demsetz等人对所有权与经营权分离的原因、条件有过深入地分析 ,在其基础上 ,讨论了拥有两家以上企业的所有者的委托行为 ,并且进一步考察了结合激励机制后 ,所有者的委托行为决策边界 ,进而从理论上解释了公司治理危机产生的原因 ,并提出了规范方案。     

基于机器视觉的铁路信号灯检测技术

为解决铁路安全运输问题,对基于机器视觉的铁路信号灯检测方法进行仿真图像和视频检测实验研究。阐述了铁路信号灯图像在不同颜色空间下的特性及其对铁路信号灯识别的影响,将其由RGB颜色空间转换为HSV颜色空间。通过Canny算子、腐蚀膨胀以及开闭运算等技术提取铁路信号灯图像的几何特征,通过Hough检测,对图像中铁路信号灯进行定位。对定位的信号灯进行颜色提取,从而识别出信号灯的类别。根据多种天气情况下的铁路信号灯图像进行仿真实验分析,进一步对采集的列车行驶视频进行实验分析,优化检测方法。研究结果表明,提出的铁路信号灯检测模型,能够支持复杂背景下的铁路信号灯类别的有效识别。通过机器视觉技术实现铁路信号灯的检测和识别,是提高铁路运输安全性的一种有效方法。     

乡村振兴背景下黔南州乡村民宿发展概况、问题及对策

乡村民宿的发展既是乡村振兴的产业基础，也是促进少数民族文化复兴的有效方式，同时也增添了乡村的个性和特色。黔南州拥有秀丽的山水自然资源和独特的民族文化内涵，这对促进乡村民宿旅游发展具有显著优势，也为这种新型旅游模式提供了内生动能。运用实地调研和问卷调查方式，剖析了黔南州乡村民宿发展存在的问题，并针对性提出了加快黔南州乡村民宿发展的具体对策，以期促进黔南州乡村民宿健康稳定发展。