B2B eMarketplaceAnnouncements and Shareholder WealthThe advent of the Internet as an instrument for business commerce has fundamentally altered the economy by ushering in increased efficiencies and more transparent Since businesses started conducting Internet transactions in 1995,the growth has been Forrester Research estimates that worldwide electronic commerce(e-commerce)revenues were about$650 billion in 2000 and projects they will grow to$8 trillion by The greatest impact is in the businessto-business(B2B)sector,where new supply chain models within electronic marketplaces (eMarketplaces)enable companies to significantly lower procurement costs and increase operating B2B eMarketplaces streamline the supply chain by making better use of more The time it takes to match buyers and sellers can be radically reduced,precautionary inventory levels can be lowered,and the range of potential suppliers and distribution outlets can be expanded as geographic boundaries Projections of online B2B revenues differ vastly,primarily because defining what counts and how to count it varies But despite these differences,forecasters agree that online B2B trade will grow B2B e-commerce is generally believed to account for about 80 to 90 percent of total e-commerce Forecasts typically project USline B2B revenues of about$2 trillion by 2003,up from roughly$336 billion in B2B e-commerce is expected to impact the USy Brookes and Wahhaj(2000)argue that the rapid growth of B2B e-commerce will have an economic impact over and above that of the normal process of innovation and productivity They suggest that as a result of B2B e-commerce,annual GDP growth in the large industrialized countries should rise an average 25 percent for the next ten years—with the level of GDP eventually 5 percent higher than it would otherwise have Brookes and Wahhaj conclude that the dominant long-run effect of B2B e-commerce will be on output and equity markets,rather than on inflation and bond 全文内容省略Investors should respond favorably to announcements of new B2B e-commerce initiatives,as long as they believe these moves will ultimately result in higher profits and increased productivity without fueling We examine the potential impact of B2B e-commerce initiatives on the New Economy paradigm using the efficient markets hypothesis(Fama et 1969),which implies stock prices reflect all available information about individual companies and about the economy as a Information is the key So in efficient capital markets,prices will immediately adjust to reflect any new Thus,B2B e-commerce announcements should immediately raise stock prices if investors believe a firm’s value will be increased by higher net future cash flows resulting from higher productivity,lower costs, or higher
可以找写手啊
The MWC can operate with as few as p = 2N channels and with a sampling rate fs = 1/T > B on each channel,so that it approaches the minimal rate of 2NB Advanced configurations enable additional hardware savings bycollapsing the number of branches p by a factor of q at the expense of increasing the sampling rate of each channelby the same factor [109] The choice of periodic functions pi(t) is flexible: The highest Dirac frequency needsto exceed In principle, any periodic function with high-speed transitions within the period T can satisfythis One possible choice for pi(t) is a sign-alternating function, with M = 2L + 1 sign intervalswithin the period T [109, 161] Imperfect sign alternations are allowed as long as periodicity is maintained [9]This property is crucial since precise sign alternations at high speeds are extremely difficult to maintain, whereassimple hardware wirings ensure that pi(t) = pi(t + Tp) for every t 2 R The waveforms pi(t) need low mutualcorrelation in order to capture different mixtures of the Popular binary patterns, , the Gold or Kasamisequences, are especially suitable for the MWC [161] Another important practical design aspect is that the lowpassfilter h(t) does not have to be A nonflat frequency response can be compensated for in the digital domain,using the algorithm developed in [162]
自己去百度文库找！什么资料都有！
The MWC can operate with as few as p = 2N channels and with a sampling rate fs = 1/T > B on each channel,so that it approaches the minimal rate of 2NB Advanced configurations enable additional hardware savings bycollapsing the number of branches p by a factor of q at the expense of increasing the sampling rate of each channelby the same factor [109] The choice of periodic functions pi(t) is flexible: The highest Dirac frequency needsto exceed In principle, any periodic function with high-speed transitions within the period T can satisfythis One possible choice for pi(t) is a sign-alternating function, with M = 2L + 1 sign intervalswithin the period T [109, 161] Imperfect sign alternations are allowed as long as periodicity is maintained [9]This property is crucial since precise sign alternations at high speeds are extremely difficult to maintain, whereassimple hardware wirings ensure that pi(t) = pi(t + Tp) for every t 2 R The waveforms pi(t) need low mutualcorrelation in order to capture different mixtures of the Popular binary patterns, , the Gold or Kasamisequences, are especially suitable for the MWC [161] Another important practical design aspect is that the lowpassfilter h(t) does not have to be A nonflat frequency response can be compensated for in the digital domain,using the algorithm developed in [162]
你可以在google 学术里去搜索你要的论文，你可以把你想要搜的关键词翻译成英文的，然后在google学术里搜索，有些是可以下载的！因为我经常用!希望被采纳！
自己去百度文库找！什么资料都有！
可以找写手啊
我刚好也这专业的我记得有一个什么论文网 全是PDF格式的论文 好像新注册可以免费下载5篇的 毕竟久了 记不太清什么网你慢慢找吧 那里文献很多
T DONT NO
答案是是2/3。
电子信息工程专业是一个电子和信息工程方面的专业。该专业学生主要学习信号的获取与处理、电厂设备信息系统等方面的专业知识，受到电子与信息工程实践的基本训练，具备设计、开发、应用和集成电子设备和信息系统的应用基本能力。电子信息工程专业培养具备电子技术和信息系统的基础知识，能从事各类电子设备和信息系统的研究、设计、制造、应用和开发的高等工程技术人才。
推荐去CNKI，清华搞的，那里面是论文数据库，可以随时下载的。你要搞不定的话，去淘宝的//翰林书店//，那里能下载到论文的
正好我刚做好了，过两天也要交了，论文，仿真，还有PPt，不是一个学校的话可以发给你QQ1255324803
电子信息工程大学毕业论文 （张清卓)从21世纪开始，无线传感器网络就开始引起了学术界，军事界和工业界的极大关注。美国和欧洲相继启动了许多关于无线传感器网络的研究计划。随着科学技术的迅猛发展，人类目前已经置身于信息时代，信息的获取是实现信息化的前提，获取物理家门口满怀欣喜的一种重要工具就是传感器。无线传感器网络是当前国际上备受关注的，由多学高度交叉的新兴研究热点领域⑴它综合了传感器技术，嵌入式计算技术及无线通信技术等三大技术，能够通过嵌入式系统对信息进行处理，并通过随机自组织无线通信网络以多跳中继方式所感知信息传送到用户终端。 无线传感器网络可以用于监控温度，湿度，压力，土壤构成，噪声，机械应力等多种环境条件，使用户可以深入的了解和把我周围的世界。无线传感器网络的随机布设，自组织，环境适应等特点使其在军事国防，环境监测，生物医疗，抢先去救灾以及商业应用等领域具有广阔的应用前景，和很高的应用价值⑵。当然，在空进搜索和灾难拯救等特殊领域，无线传感器网络也有其得天独厚的技术优势。