1.设E是R中一族(开的、闭的、半开半闭的)区间的并集.证明E Lebesgue是 可测集 2.设f是R上有界的单调增加函数.证明f在R上几乎处处可导并且f在R 上L可积

如图: 我们假设所有进入劳动力市场的劳动力(Labor force)数量为L,所谓失业 率为0指得是进入劳动力市场的劳动力被完全利用( completely utilized), 即厂商雇佣了L这么多的劳动力; 劳动力市场的均衡点是E,在这一点上劳动力供给等于需求。如果我们把 劳动力看作一种商品,在E点,劳动力市场上的“生产者剩余”和“消费 者剩余”之和达到最大1,这意味着劳动力市场是效率最大化的

Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Describe the strategic planning process. 2. Describe the purpose and content of a business plan. 3. Understand how e-commerce impacts the strategic planning process. 4. Understand how EC applications are formulated, justified, and prioritized

Derivatives Dependent on a single Underlying Variable Consider a variable, 0, (not necessarily the price of a traded security) that follows the process d e S Imagine two derivative s dependent on e with prices f, and f2. Suppose

复习 1.下列哪项辅助检查,不能诊断早期妊娠() A宫颈粘液检查B基础体温测定 C基础代谢测定D黄体酮试验 E超声检查 2.胎盘的功能,错误的是() A供给氧气B供给营养 C供给血液D防御功能 E合成功能

Electronic Commerce Prentice Hall © 2006 2 Learning Objectives 1. Define the e-supply chain and describe its characteristics and components. 2. List supply chain problems and their causes. 3. List solutions to supply chain problems provided by EC

Introduction Signaling games are used to model the following situation: Player 1, the Sender, receives some private information and sends a message m E M to Player 2, the Receiver. The latter, in turn, observes m but not 0, and chooses response r E R. Players'payoffs depend on 0, m and r. What could be simpler? Yet, there is a huge number of economically interesting games that fit nicely within this framework: Spence's job market signaling model is the leading example, but applications abound in IO (limit pricing, disclosure...) finance (security design) and political economics

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 electronic retailing (e-tailing) and its characteristics. 2. Define and describe the primary e-tailing business models. 3. Describe how online travel and tourism services operate and their impact on the industry

一、画出下列各信号的波形(式中r(t)=t(t)为斜升函数) (1)f(t)=(2-3e)e(t) (2)(t)=sin()(t) (3)f (t)=(sint) (4)f(k)=(-2)ke(k)