Knowledge sharing in revenue management teams: Antecedents and consequences of group cohesion

The practice of Revenue Management has received widespread acceptance in the international hospitality industry yet a lack of best practice in terms of organizational integration persists. This paper follows the notion that revenue management is first and foremost a human activity, dependent on knowledge exchange and concerted decision within revenue management teams. One critical attribute of effective teams is group cohesion. The authors contrasted communication networks of 38 revenue management teams by means of social network analysis to identify the antecedents and consequences of group cohesion. It was found that industry employment, age and revenue management experience define the structure of communication networks and that awareness of other's expertise is central in explaining differences team performance across the sample. The findings highlight the issue of knowledge asymmetry in teams and suggest that the Revenue Manager occupies a more active role as an information broker in order to enhance group decision making.     

正视中西文化差异提高跨文化交际能力

进入21世纪以来，随着全球一体化进程的加快，我们和西方国家的交往日益频繁。然而，由于中西方不同的文化背景，我们在交往过程中会不可避免的产生一些障碍和摩擦，在理解、处理问题方面也存在一定的差异。本文针对这一问题从日常生活与交际方面入手，列举出几个我们常会遇到的问题并分析其产生的原因，从而使大家意识到跨文化交际的重要性，最后结合跨文化教育的现状提出几条有效地方法来培养我们的跨文化交际意识，提高跨文化交际能力。     

Web2.0时代的网络教育模式

互联网技术的迅速发展、趋势的加强以及学习社会化思潮的提出,为Web2.0下的社会化网络教育提供了物质基础。由于具有其固有的特性,Web2.0更加符合教育信息化的要求,适合未来的网络教育模式。理解Web2.0思想以及在它基础上构建的新型网络教育体系,是发展未来信息化教育的前提。     

基带成形滤波器的FPGA实现

针对数字化基带成形滤波的信号处理特点，将截短的基带波形进行二维分解，得到成形滤波器的多相结构。通过对多相结构的分析，给出了一种较为精简实用的基于滤波器系数查询表模式的FPGA实现结构，该结构具有实现简单、占用资源少等特点。仿真结果表明，该结构完全可以达到实际应用的要求。     

Public perception of scientific uncertainty in relation to food hazards

The research reported here aims to understand how people react to statements expressing risk uncertainty information in the context of a commonly experienced potential hazard, food related risks. Public perception of seriousness of risk for themselves, and for other people was examined for different types of uncertainty, for each of five different food hazards. The results indicated that participants responded to the different types of uncertainty in a uniform way, suggesting that perception of risk associated with uncertainty is not affected by the 'type' of uncertainty. The results further indicated that the seriousness of risk, in the presence of statements of uncertainty, was perceived to be greater for pesticides and genetic modification compared to BSE, high fat diets and Salmonella . It was argued that this could be due to the perceptions of low personal control, and high societal responsibility to protect people and societal control over exposure to the potential risks of pesticides and genetic modification. Under circumstances where people feel they have little personal control over their exposure to a particular hazard, and those social institutions that are perceived to be in control of protecting the public indicate that there is uncertainty associated with risk estimates, the hazard may appear to be 'out of control', which is associated with a perception of serious risk.     

可编程直接序列扩频通信系统的数字化实现

本文讨论了利用ASIC芯片和CPU实现直接序列扩频系统数字化的方法，阐述了各部分电路的设计思路，给出了系统总体框图及实验系统的信号波形。     

Concerning trust and information

Communication and the associated information exchanges are key drivers of the development of relationships and of the trust embedded within them. This paper considers the development of business relationships in terms of the continuing co-evolution of trust and information exchange and the issues associated with researching these processes. The interconnections of trust and information exchange are examined in a survey of business relationships involving information exchange (n = 355). Analysis of variance shows few, if any, of the aspects of the standard conceptualizations of information exchange are associated with increased levels of trust. It is information exchange norms that have the greatest (positive) association with the level of trust. These norms emerge as part of the long term co-production of the relationship itself. This has important managerial implications. We conclude there are few managerial actions involving managing communication that can “manufacture” trust and improve or develop relationships in the short term. The paper concludes with a discussion of alternative ways of envisaging communication and relationship management and the nature and future of research into the evolution of business relationships.     

Persistence and Change at the Top of the IT Sector

We use the DATAMATION index of the top 50 domestic IT companies (1975–1995) to track persistence and change at the top of the sector. The trends that we uncover are increasing instability, rejuvenation (declining average age of entrants coupled with increasing average age of quitters), democratization (diminishing revenue inequality at the top) and growing supply‐side intertwining of sub‐sectors and industries within IT due to diversification by long‐term survivors.     

一种利用短时DFT分析实现全数字2DPSK接收机解调的新算法

本文提出了一种简单而实用的利用短时DFT（ST-DFT）分析实现全数字2DPSK接收机的解调算法。该算法对由多谱勒效应引起的时变频率漂移具有鲁棒性。由于该算法是通过检测在载频处的瞬时能量谱的跳变来实现2DPSK信号的解调，所以该算法不需要进行专门的载波相位恢复、符号定时，且具有较好的抗噪性能，实现起来简单。