C++运算符重载剖析

重载是面向对象程序设计中的一种重要机制,可以提高程序可读性,实现多态性。C++语言中有两种重载:函数重载和运算符重载。运算符重载实质就是函数重载。本文主要讨论的是C++中运算符重载的规则、机制以及形式。     

德育工作者思维预见力的培养探析

面对复杂多变、动态发展的社会现实和人的思想,为了取得德育工作的主动权、增强德育工作的针对性和实效性,德育工作者应培养自己的思维预见力,明确使命,增强忧患意识,加强理论修养,不断拓宽自己的知识面,加强调查研究,运用科学思维方法,科学把握事物的规律性和趋势。     

Consistency among trading desks

We consider a bank having several trading desks, each of which trades a different class of contingent claims with each desk using a different model. We assume that the models are arbitrage-free. A practical question is whether a bank using several models can be arbitraged. Surprisingly it can happen that in some cases there must be an arbitrage. We discuss conditions under which the bank trades without offering arbitrage.The second-named author is grateful for support from NSERC Discovery grant 504316. An earlier version has been presented in the seminars at Fields Institute (2003), Cambridge University (2003) and IMA (2004); the authors thank for fruitful discussions. The authors also thank the referee for helpful comments.     

Sustainable supply chain management in tourism

Sustainable supply chain management (SSCM) encapsulates the trend to use purchasing policies and practices to facilitate sustainable development at the tourist destination. Most research has focused on environmental aspects of manufacturing, while other aspects of sustainability or the challenges for the service sector are largely ignored. Yet SSCM is particularly important for tour operators, as the product depends on the activities of suppliers, such as accommodation, transport and activities. Therefore, tour operators' contribution to sustainable tourism will be more effective through the definition and implementation of policies that acknowledge responsibility for the impacts of suppliers. Exploratory research of SSCM practices amongst tour operators generated a wide range of examples of good practice across the whole supply chain, and recommendations are made for more widespread engagement. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment.     

基于多维权有向图的多式联运中运输方式的选择研究

建立了以运输费用、运输能力及运输时间三者为基础的模型，同时结合多维权有向图理论对其进行求解，并对其进行了实证分析。     

电信运营商纵向一体化的动因与边界分析

本文首先描述了我国电信服务业的纵向链条，然后从经济学的视角分析了电信运营商执行纵向一体化战略的动因．讨论了电信运营商纵向一体化的边界问题，并提出了我国电信运营商执行渐变一体化和战略联盟的建议。     

浅论3G时代基于电信运营商视角的价值链策略

进入3G时代后,由于无线网络数据传输能力的提升,电信业务与网络相分离的现象越发明显,产业链演变迅速,运营商急需找准定位并采取相应策略,以实现价值链成员的共赢。     

加权Bergman空间上复合算子的范数

该文给出了加权Bergman空间上复合算子范数的一些刻划。     

旅游关系营销:旅游营销创新的一个概念性框架

从创新角度出发，在经典的市场营销组合4Ps模式基础上，提出了旅游营销6P1S组合模式；以“引入关系、重视关系”为指导，建立了目的地“关系营销桥梁战略模式”(DTRMSBM)。在此基础上，提出了旅游企业概念性关系营销战略(TCRMS)的框架：以“始于游客、终于游客”为指导，确立“游客至上”的营销战略目标；以“动态定位、整体定位”为指导，确立动态适应的营销战略对策体系，“以变应变、以动制动”；以游客服务为中心，把全过程服务(TPS)贯穿于营销战略的始终。     

Nφ型商模上的Toeplitz算子：相似性,酉等价性,约化子空间

利用张量积,研究了Nφ型商模上的符号为一般有限B laschke积的解析Toep litz算子的相似性、酉等价性及极小约化子空间.