Chapter 5 Electronic commerce information's search and selection In physical markets, consumer search activities include reading advertisements, calling endors, and visiting stores. In a virtual marketplace, all these activities seem to converge into Web searches and Web browsing. Not surprisingly, search services are the first market infrastructure to be built in the electronic marketplace

Chapter 7 Internet marketing 7.1. Introduction of internet marketing 7.1.1 Internet marketing defined What is internet marketing? Internet marketing or internet-based marketing can be defined as the use of the Internet and related digital technologies to achieve marketing objectives and support the modern marketing concept. These technologies include the Internet media and other digital

Chapter 9 The principle of ebXML 9.1 The introduction of ebXML 9.1.1 What is ebXML? ebXML is a global electronic business standard that is sponsored by UN/CEFACT(United Nations Center For Trade Facilitation And Electronic Business)and OASIS(Organization for the Advancement of Structural Information Standards). ebXML thus defines a framework for global

7-1锁相环路概述 7-2锁相环路基本工作原理 7-3锁相环路分析 7-4锁相环路的应用 7-5频率合成

1线性电子线路与非线性电子线路 2非线性电子线路在通信系统中的应用

2.1概述 2.2硼族元素的缺电子性 2.2.1乙硼烷的成键特征及反应性

厦门大学：《无机元素化学》P4O10反应-2

§1 线性方程组的Gauss消元法 §2. 线性方程组解的结构 §3 解线性方程组的一个应用

3.1 核磁共振波谱 3.2 1H－核磁共振波谱 3.3 13C－核磁共振波谱 3.4 NMR在高聚物研究中的应用 3.5 NMR的经验计算关系式

4.1 色谱分离原理及其分类 4.2 气相色谱仪简介 4.3 色谱谱图解析 4.4 定性与定量分析 4.5 故障诊断与排除 4.6 反气相色谱法 4.7 气相色谱法与反气相色谱法在高分子研究中的应用