COM技术简介 coM(Component Object Model,组件对 象模型),是一种允许对象之间跨进程、跨 计算机进行交互(Interact)的技术,并且使 得这种交互容易得好象在本地计算机同一 进程中进行一样

现代投资理论的产生以1952年3月 Harry.m. Markowitz发 表的《投资组合选择》为标志 1962年, Willian Sharpe对资产组合模型进行简化,提出 了资本资产定价模型( Capital asset pricin g model CAPM) 1976年, Stephen Ross提出了替代CAPM的套利定价模型 (Arbitrage pricing theory, APT) 上述的几个理论均假设市场是有效的。人们对市场能够 地按照定价理论的问题也发生了兴趣,1965年, Eugene Fama在其博士论文中提出了有效市场假说(Efficient market hypothesis, EMH)

6. 1 An atomic model is needed to understand how atoms bond Electrons in the outermost occupied shell of any atom are responsible for the atom's chemical properties. The electrons that participate in chemical bonding are called valence electrons(价电子), the shell they

FOUR COLONY MODELS (2) Model of New England (Puritan 1620 in Massachusetts Bay) ↓ Followed the doctrine of John Calvin (everyone had a calling given by God; read the Bible to find God's will and search for one's individual contact with God

FOUR COLONY MODELS(1) Model of VIRGINIA (Jamestown 1607) Captain John Smith John Rolfe(married princess of an Indian tribe chief) House of Burgesses

9-1: Aggregate Supply 9-2: Aggregate Demand 9-3: Equilibrium Output in the Short and the Medium Run 9-4: The Effects of a Monetary Expansion 9-5: A Decrease in the Budget Deficit 9-6: Changes in the Price of Oil 9-7: Conclusions

实体联系模型(Entity Relationship Model) 是P.P.Chen于1976年首先提出的,此后此模型 不断扩展和完善,成为被广泛采用的概念模型 设计方法。这个模型直接从现实世界中抽象出 实体类型及实体间联系,然后用实体联系图 (ER图)表示数据的抽象和数据的联系。设计ER 图的方法称为ER方法

This paper develops a model of the competition among states in providing corporate law rules. The analysis provides a full characterization of the equilibrium in this market Competition among states is shown to produce optimal rules with respect to issues that do not have a substantial effect on managers private benefits

•Founders •Basic Assumptions •Basis for trade •Pattern of production and trade •Gain from trade

It is well known that rapidly pulsed current tends to concentrate near the surface of copper conductors forming a “skin”. A similar effect occurs when current flows through a highly conductive and rapidly moving plasma: current tends to concentrate near the entrance and exit of the channel. The reason is the appearance of a strong