互联网的发展一日千里，电子商务的应用也不断发展。目前第二代基于 Web Services的系统结构刚刚出现，我们力求反映这个全新的系统结构。 系统基于商业模型、功能模型、顾客行为模型，以及IT资源的四层模型 组成。介绍了新的应用程序开发模型和Web Service架构，详细分析基于 Web Service架构中的三个要素：SOAP、WSDL和UDDI

电子科技大学：《试验设计方法》第四章 单因素优选法、多因素方法（降维法）

电子科技大学：《试验设计方法》第二章 正交试验结果的统计分析方法（部分）

电子科技大学：《试验设计方法》第三章 多指标问题及正交表的灵活运用（部分）

电子科技大学：《试验设计方法》第五章 回归分析（部分）

外光电效应: 在光线作用下使物体的电子逸出表面的现象。 如光电管、光电倍增管 内光电效应: 在光线作用下能使物体电阻率改变的现象， 如光敏电阻等属于这类光电器件。 阻挡层光电效应(光生伏特效应): 在光线作用下能使物体产生一定方向的电动 势的现象

93.1 Introduction 93.2 Hardware Redundancy 93.3 Information Redundancy 93.4 Time Redundancy 93.5 Software Redundancy 93.6 Dependability Evaluation

Computer networks are geographically distributed collections of communication links and switching proces￾sors, the purpose of which is to transport data between computers, workstations, and terminals. In general the elements of a computer network must follow compatible rules of operation together to function effectively. These rules of operation are known as protocols

The term computer graphics refers to the generation,representation, manipulation, processing, and display of data by a computer. Computer-generated images may be real or imagined, animated or still, two-dimensional (2-D) or three-dimensional (3-D).Today most computers, particularly those in the PC,Macintosh, or workstation categories

The last decade has seen a revolution in software engineering tools and techniques. This revolution has been fueled by the ever-increasing complexity of the software component of delivered systems. Although the software component of delivered systems may not be the most expensive component, it is usually, however, “in series” with the hardware component; if the software doesn’t work, the hardware is useless