The role of WiBro: Filling the gaps in mobile broadband technologies

This paper analyzes WiBro, one of the emerging wireless technologies for portable Internet services (PIS), which are designed to enable mobile broadband access. Based on an empirical examination of consumer preferences for mobile broadband technologies and an estimation of the future demand for WiBro, this study proposes that WiBro should fill the gaps between competing mobile broadband technologies, such as 3G and WLAN.     

工商银行面向中小企业融资业务的服务营销

中小企业的成长与发展是近年来中国经济持续稳步增长的重要支撑,但大多数发展中的中小企业都面临着融资难的窘境。这就产生了一个矛盾:一方面是中小企业难以获得银行的信贷支持,另一方面是银行的大量资金无法贷出。本文从服务营销的角度出发,回顾了银行服务营销的发展历程,详细分析了我国中小企业发展现状、融资现状,并对工商银行中小企业融资业务的开展情况和面临的环境进行了阐述,在此基础上,作者从产品、促销、人员、过程4个方面,就工商银行如何制定面向中小企业的组合营销策略提出了详细的对策建议。     

Multiple generation product life cycle predictions using a novel two-stage fuzzy piecewise regression analysis method

Product life cycle (PLC) prediction plays a crucial role in strategic planning and policy definition for high-technology products. Forecast methodologies which can predict PLCs accurately can help to achieve successful strategic decision-making, forecasting, and foresight activities in high-technology firms, research institutes, governments, and universities. Over the past few decades, even though analytic framework strategies have been proposed for production, marketing, R&D (research and development), and finance, aiming at each stage of PLCs, forecast methodologies with which to predict PLCs are few. The purpose of this research is to develop a novel forecast methodology to allow for predictions of product life time (PLT) and the annual shipment of products during the entire PLC of multiple generation products. A novel two-stage fuzzy piecewise regression analysis method is proposed in this paper. In the first stage, the product life-time of the specific generation to be analyzed will be predicted by the fuzzy piecewise regression line that is derived based upon the product life-time of earlier generations. In the second stage of the forecast methodology, the annual shipment of products of the specified generation will be predicted by deriving annual fuzzy regression lines for each generation, based upon the historical data on the earlier generations' products. An empirical study predicting the life-time and the annual shipment of the 16 Mb (Mega bit) DRAM (Dynamic Random Access Memory) PLC is illustrated to validate the analytical process. The results demonstrate that two-stage fuzzy piecewise regression analysis can predict multiple generation PLT and PLC precisely, thereby serving as a foundation for future strategic planning, policy definitions and foresights.     

VMI思想及其理论方法的发展过程

分析、总结和归纳了当今企业库存管理的一个新热点——VMI思想及其理论和方法的起源和发展演变过程,揭示了这种理论产生的必要性及其对企业的重要性。     

浅谈GPRS无线技术及其应用

GPRS(通用无线业务)技术是为了满足现有的GSM网络实现与高速数据分组的简便接入而兴起的一门新技术。文章系统分析了GPRS的组成结构及特点,研究了其主要的技术实现。     

价格、时间敏感性供应链收益混合分配契约模型研究

供应链企业通过何种契约方式进行协同合作，以达到整体目标的最优，是供应链管理的一个重要研究课题。在一个两阶供应链系统中，面对价格和响应时间敏感性市场需求，文章通过引入供应商的激励——响应时间函数和市场关于价格和响应时间的需求函数，构建了供应链的收益混合分配契约模型，最后文章给出了算例分析，验证了该模型的可行性。     

Intraday Value at Risk (IVaR) using tick-by-tick data with application to the Toronto Stock Exchange

This paper investigates the use of tick-by-tick data for intraday market risk measurement. We propose a method to compute an Intraday Value at Risk based on irregularly spaced high-frequency data and an intraday Monte Carlo simulation. A log-ACD–ARMA–EGARCH model is used to specify the joint density of the marked point process of durations and high-frequency returns. We apply our methodology to transaction data for three stocks actively traded on the Toronto Stock Exchange. Compared to traditional techniques applied to intraday data, our methodology has two main advantages. First, our risk measure has a higher informational content as it takes into account all observations. On the total risk measure, our method allows for distinguishing the effect of random trade durations from the effect of random returns, and for analyzing the interaction between these factors. Thus, we find that the information contained in the time between transactions is relevant to risk analysis, which is consistent with predictions from asymmetric-information models in the market microstructure literature. Second, once the model has been estimated, the IVaR can be computed by any trader for any time horizon based on the same information and with no need of sampling the data and estimating the model again when the horizon changes. Backtesting results show that our approach constitutes reliable means of measuring intraday risk for traders who are very active in the market.     

旅行社网站服务公平性对顾客行为意向的影响研究

企业坚持公平性原则,才能建立和维系与顾客的长期关系.笔者以旅行社网站的顾客为研究对象进行了一次实证研究,探讨了旅行社网站服务公平性对顾客行为意向的影响.数据分析结果表明:旅行社网站服务公平性直接影响顾客信任感和满意感,间接影响顾客的行为意向.     

闲暇经济理论综述及最新进展

随着国外发达国家相继进入后工业化社会,闲暇经济理论尽管还远未成型,但已经成为国外经济研究的新兴课题,本文按照闲暇经济理论的发展历史和研究方向,从两个方向综述了该理论的内容,一是依据对不同类型闲暇时间的研究来进行综述,二是在此基础上从闲暇被引入进各类函数和经济系统的角度综述了相关研究的主要成果.