The future of the mobile phone business

One of the fastest growing technologies of our times is that of mobile phones. In this article we use the assumption that the diffusion of mobile technology, as measured by the number of active mobile accounts, follows the well known S-curve of natural growth in competition systems. The accuracy of the logistic fit is tested against actual data for the whole world, Europe, China and the GSM system. Using the produced models predictions concerning the future of mobile business are deliberated.According to these models active mobile accounts around the globe are expected to grow from 1.7 billion in 2004 to approximately 2 billion in 2008, reaching a peak penetration of 29.2%. Growth barriers, apart from the age of the potential user, are also low income and extreme poverty. Europe, early adopter of mobile technology and leader in active mobile accounts against all other regions in the world, has apparently reached a peak with almost every European, apart from the very young or very old, using a mobile phone. The mobile market in China is anticipated to exceed 500 million active accounts and may increase even further depending on the economic and social reform that is currently under way in that part of the world. GSM will most likely remain the leading mobile technology in the future as it is today.The growth process for the world, Europe, and the GSM system is almost completed and during this stage instabilities may occur before the potential emergence of a new wave of growth.     

刍议企业精准营销工具的选择

随着精准营销在我国的发展，种类繁多的精准营销工具不断出现。企业在精确的市场细分和市场定位的前提下，如何选择适合企业实际情况的营销工具，是企业实施精准营销活动的重要环节。     

数字蜂窝式移动电话系统现状与发展

目前在世界上许多国家运营的蜂窝式移动电话系统如北欧四国的 NMT、美国的AMPS、联邦德图的 C 网、英国的 TACS、日本的 NAMTS,我国在北京、上海和广州运营的 TACS 和爱立克森系统都属第一代模拟式移动电话系统。为了满足更多用户的要求,建立符合统一技术标准的系统,欧州许多国家在移动通信专业组(GSM)组织协调下,提出了多种系统方案,即第二代数字蜂窝式移动电话系统试验系统方案。本文对这几种系统,重点对 CD900、S900D,作了全面介绍。并从多址技术、信道编码、语音编码、调制技术以及经济性等方面进行了分析和评估。     

Mobile technology usage and B2B market performance under mandatory adoption

This paper investigates the relationship between mandatory adoption of mobile information technology and market performance in the business-to-business (B2B) setting. This study presents and tests the B2B technology satisfaction model (TSM), including perceived loss of control as the mandatory technology acceptance-specific variable. The results of this study reveal that integrating perceived loss of control with user satisfaction and the TAM (technology acceptance model) in a single model can better explain the B2B market performance model. The empirical results suggest that perceived loss of control has a negative effect on user satisfaction and perceived market performance is influenced by user satisfaction and perceived usefulness. Managerial implications of the study are discussed.     

电子货币影响短期利率的实证研究:基于狭义电子货币的视角

基于电子货币的狭义定义,本文从狭义电子货币影响货币供求的角度选择影响短期利率的解释变量并构建理论模型。在控制其他影响因素后,发现狭义电子货币对30天期Chibor利率的直接影响并不显著,而主要受传统货币电子化、移动网络等支付技术发展影响的变量,如货币供给流动性、金融电子化程度以及现金漏损率与30天期Chibor利率之间存在长期协整关系,货币供给流动性、金融电子化程度以及现金漏损率对30天期Chibor利率的影响方向均为正。     

一种实用的无线信道纠错方法

核心竞争力是企业适应市场的潜力。中国某些企业由于缺乏核心竞争力而使其市场份额逐渐缩小。为了适应国际市场竞争的形势,发展企业核心竞争力是重中之重。为此,除了企业加强自身建设以外,政府应该利用法律和政策,充分利用加入WTO以后宝贵的“缓冲期”,使国内市场尽快完善,促进企业核心竞争力的不断提高。     

信道估计偏差对空时编码的OFDM系统性能的影响

本文研究了采用空时编码的OFDM系统的性能，通过Monte Carlo仿真分析了系统性能和信道估计偏差对系统的影响。     

频率复用系统同信道干扰抑制因子的研究

随着中国加入WTO及中国经济的发展,国外、国内企业的国际直接投资、融资需求将进一步扩大。因此,招商引资中介服务将越来越重要。但目前在我国国际直接投、融资中介方面还存在诸多问题,不能适应发展的需要。将传统的方式与现代的网络技术相结合,把整合营销的观念引入招商引资中,发展招商引资中介业,促进国际资本流动和我国经济的发展,有着重要的意义。     

自适应无线传输技术在高速下行数据分组接入中的应用

随着高速、多媒体数据业务需求的日益增长 ,未来无线移动通信系统越来越需要解决支持更高速数据传输技术及频带利用率的问题 ,自适应传输技术是提高频带利用率的有效手段。结合最新3GPP提出的高速下行数据分组接入HSDPA ,归纳、总结和分析了自适应无线传输技术在HSDPA的应用以及其优点和应用前景、未来的研究方向     

发射分集系统在空间相关莱斯快衰落信道下的性能

我国加入WTO以后,对于上海的发展是一个千栽难逢的机遇,同时也给上海的发展带来新的挑战。本文通过详实的资料分析了上海经济发展的现状和制约上海进一步发展的问题,并运用市场营销新理论,提出构建上海现代化大都市的营销战略。