The expectation or expected value of a random variable is a single number that tells you a lot about the behavior of the variable. Roughly, the expectation is the average value, where each value is weighted according to the probability that it comes up. Formally, the expected value of a random variable r defined on a sample space s is: (B)=∑R()Pr(o) To appreciate its signficance, suppose S is the set of students in a class, and we select a student uniformly at random. Let r be the selected student's exam score. Then
assets An asset is a commodity that provides a flow of services over time. +E.g. a house, or a computer. .A financial asset provides a flow of money over time -a security
Cloning vectors: 克隆载体 to clone a gene in a vector Expression vectors: 表达载体 to express a gene from a vector Integration vectors: 整合载体 to integrate a gene in a genome through a vector Cloning vectors 1 Plasmid vecters 2 Bacteriophage vectors 3 Cosmids & BACs 4 Eukaryotic vectors Cloning vectors: allowing the exogenous DNA to be inserted, stored, and manipulated mainly at DNA level. expression vectors: allowing the exogenous DNA to be inserted, stored, and expressed
I THE EVIDENCE ON CONVERGENCE A Formal Legal Change B The Structure of Share Ownership C The Growth of European Stock Markets D The Emergence of an International Market for Corporate Control E A Preliminary Evaluation F The Status of the Insider-Dominated Firm II WHEN DOES SEPARATION OF OWNERSHIP AND CONTROL ARISE? A HISTORICAL PERSPECTIVE A The United States Experience 1 The Role of Investment Bankers 2 The New York Stock Exchange as Guardian of the Public Investor B The British Experience C A Civil-Law Contrast: The French Experience D The German Experience: Statist Intervention That Stunted the M arket E A Preliminary Summary III\ DOES LAW MATTER?\ RECONSIDERED A Law and the Decentralized Common-Law World B The Sequence of Legal Change: Reinterpreting LLS&V 1 The United States Experience 2 The Global Experience C The Political Theory of Dispersed Ownership D Implications for Transitional Economies IV C ONCLUSION
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