先进制造技术03-1.doc

1.3 The Role of the World Wide Web (WWW) in Manufacturing 角色的万维网(WWW)在制造 重点： Global manufacturing on the Web research issue全球生产网络上的进一步研究的问题 Some most important characteristics of manufacturing due to globalization are: 由于全球化制造一些最重要的特性是: Customers involved with the production of the part from cradle to grave (from design to usage: Life cycle)客户参与生产的部分,从摇篮到坟墓(从产品的设计到产品的使用方法:生命周期) Customers have access to data instantly客户能够访问数据的瞬间 Customers have access to different manufacturers客户能够访问不同的生产厂家 Experts need to cooperate and collaborate with the customers专家们还需要合作,与客户合作 Customers will get what they have requested客户要得到他们所要求的 Some terms某些术语 1). WWW —— World Wide Web 。WWW——万维网上 2). HTTP —— Hyper Text Transfer Protocol 。HTTP——超文本传输协议 3). HTML —— Hyper Text Markup Language 。HTML——超文本标记语言 4). HTTPD —— Hyper Text Transfer Protocol Daemon 。HTTPD——超文本传输协议精灵 5). SGML —— Standard Generalized Markup Language 。SGML——标准归一化标记语言 6). VRML —— Virtual Reality Modeling Language。虚拟现实建模语言VRML The Client on the Web does the following:客户在网上做以下 Help the user form a request帮助你的用户,形成一个请求 Send the user’s request to the server用户的请求发送到服务器 Inform the user of the status of the request告知用户的现状的要求 Presenting the user with the results by properly decoding the on-line documents. 呈现在用户和结果通过恰当地编解码的在线文档 The Web Server does the following:网站服务器做以下 Receives the requests接收请求 Validates the requests验证请求 Retrieve and properly form the data检索和正确形式的数据　 Deliver the information to the requesting client 传递信息的请求的客户机 The Some new challenges creased by the WWW:一些新的挑战弄皱了的WWW: How to cope up with dynamic information?如何应付与动态信息吗? How to deal with the concept of data warehousing（大量数据存储） (tremendous amount of data)?如何处理数据仓库的概念吗 How to deal with the concurrency issues（并行数据流）?如何处理同作问题 How to deal with security issues?如何处理安全问题吗? How to improve speed of communications?如何提高速度的通信 The WWW can be used to: WWW服务器可以用来: Publish documents and information公布了一些文件和信息Transmit Programs传送节目 Store data and information (digital library)