Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Describe the role of support services in EC. 2. Define EC order fulfillment and describe the EC order fulfillment process. 3. Describe the major problems of EC order fulfillment. 4. Describe various solutions to EC order fulfillment problems

采用快速划伤法对18-8Ti、316L不锈钢和Incoloy800合金在氯化钠溶液中的裸表面临界点蚀电位Ec进行了精确的测量。分析了金属裸表面上点蚀的形成机理,指出了裸表面临界点蚀电位的物理意义。研究表明,Ec与氯离子浓度成半对数关系。比较并分析了Ec与动电位法测得的点蚀击破电位Eb、保护电位Ep之间的关系。研究表明,Ec与Eb在不同pH值的氯化钠溶液中表现出相同的变化规律,并通过测得再钝化系数的变化规律来说明pH值对Ec和Eb的影响

EC 2006 Prentice Hall 2 Learning Objectives 1. Define electronic commerce (EC) and describe its various categories. 2. Describe and discuss the content and framework of EC. 3. Describe the major types of EC transactions. 4. Describe the digital revolution as a driver of EC

Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Describe the differences between legal and ethical issues in EC. 2. Understand the difficulties of protecting privacy in EC. 3. Discuss issues of intellectual property rights in EC

Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Discuss the major steps in developing an EC application. 2. Describe the major EC applications and list their major functionalities

◼ Basic Concepts of EC ◼ Genetic Algorithms ◼ An Example ◼ Chromosome Representation ◼ Stopping Criteria ◼ Initial Population ◼ Selection Mechanisms ◼ Crossover and Mutation ◼ Fitness Functions ◼ Another Example ◼ Application: Routing Optimization ◼ Advantages and Disadvantages of EC

1 图中实线为某电场的电场线，虚线表示等势面，则: (C) EA>EB>EC UAUB>UC

几种水解酶:芳基硫酸酯酶(Arylsulphatase(ec3.1.6.)),葡萄糖苷酶 glucosidase(ec3.2.1.21)和磷酸单酯酶(phosphmonoester(e3.1.3)测定: 这三种酶的测定都是依据人工合成底物(p-nitrophenyl,p- -nitrophenyl glucoside andp- -nitrophenyl phosphate, respectively)裂解后释放的p- -nitrophenol的量来测定 Arylsulphatase(ec3.1.6.1):称取1g土(湿重,与4m1500mM乙酸缓冲液(acetate buffer)(pH5.8)和1ml底物(25mM)混匀

Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Describe the factors that influence consumer behavior online. 2. Understand the decision-making process of consumer purchasing online. 3. Describe how companies are building one-to-one relationships with customers. 4. Explain how personalization is accomplished online. 5. Discuss the issues of e-loyalty and e-trust in EC. 6. Describe consumer market research in EC

Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Describe the need for justifying EC investments, how it is done, and how metrics are used to determine justification. 2. Understand the difficulties in measuring and justifying EC investments. 3. Recognize the difficulties in establishing intangible metrics and describe how to overcome them