一、环境系统与环境规划 (一)环境系统 环境系统的组成要素有各种大气组成物质、水、 土壤、各种生物以及人类生存所处的近地空间与各种 人工构筑物,它们分别构成了大气环境、水环境、 上壤环境以及城市环境等要素子系统。环境系统的结 构指环境系统各要素之间的联系和相互作用方式, 包括各环境要素的赋存量及其有规律的运动变化

环境规划的内容应包括制定恰当的环境目标,环境规划目标是 通过环境指标体系表征的,环境指标体系是一定时空范围内所有环 境因素构成的环境系统的整体反映。环境评价是在环境调查分析的 基拙上,运用数学方法,时环境质量、环境影响进行定性和定量的 评述。环境预测是指根据人类过去和现有己掌握的信息、资料、 经验和规律,运用现代科学技术手段和方法对未来的环境状况和环 境发展趋势,及其主要污染物和主要污染源的动态变化进行描述和 分析。环境功能区是指时经济和社会发展起特定作用的地域或环境 单元

战略性计划是指应用于整体组织的,为未 来组织较长时间(通常为五年以上)设立整体 目标和寻求组织在环境中的地位的计划

语句是C#程序中执行操作的命令,是一行用分号()终止的代码 System. Console. WriteLine( \Hello World! 个块是以上括号和下括号为边界的语句集合 。一个块可被用在一个类的定义中

在过去的几年中,万维网(Web)技术的飞速 发展融汇了大量的信息,从商品广告到人才招 聘;从学术交流到娱乐新闻万维网提供了 一个可以轻松驾驭的图形化用户界面,以查阅 因特网上的文档,这些文档以及它们之间的链 接一起构成了一个庞大的信息网

Chapter 1 Introduction of Electronic commerce 1. 1 Development of Electronic Commerce(e-commerce 1.1.1 Histor Throughout history, attempts to promote new means of communication were simply means with which to increase opportunities for ease, efficiency and security. The foundations on which electronic commerce is based started 125 years ago with the use of telegraph

Chapter6 Transaction behavior on the internet 6.1 consumer buying behavior 6. 1. 1 What is Consumer Buying Behavior Buying Behavior is the decision processes and acts of people involved in bu product Need to understand why consumers make the purchases that they make? what factors influence consumer purchases? the changing factors in our society

Chapter 4 Website design 4.1 General Design of e-Business website 4.1.1 Defining the task Once you have decided to hire [COMPANy], the first step is to define the project very carefully and very thoroughly. It is critical to put down on paper what is and isn't included for the agree-to price. We call this the\Statement of Work\and include it as part of our proposal. For us to prepare this document, we're going to have a lot of questions to ask. If you haven,'t done so

Chapter 2 The strategy of the development of E-Commerce 2. 1 The importance of the development of E-Commerce's research The impact of e-commerce, particularly in business to business(B2B)transactions, continues to grow. Customers increasingly expect to be able to deal with suppliers electronically as a matter

Chapter 11 Electronic Commerce logistics 11.1 The Overall Electronic Commerce Logistics 11.1.1 The Logistics And the Logistical System Interest in the Internet has changed so drastically in recent years that one can speak of a universal breakthrough. The remarkable increase in users can be attributed mainly to the appeal of the World Wide Web, the Internet feature that is enjoying the greatest growth. There is some