The March-April 1974 issue for businesses selling It is now widely recognized that one of the main of HBR carried an article products that are pur. determinants of business profitability is market that reported on Phases I chased infrequently by a share. Under most circumstances, enterprises that and II of a project spon-
Using financial measures of performance we investigate the sources of value creation in the U.S. brewing industry between 1969 and 1979. We find that market share gains in this industr at this time are not correlated with changes in value and that the performance of individual leading firms is highly correlated. Our interpretation is that the success of building
一、理想气体的微观模型 (The microscopic model of the ideal gas)力学假设 (Mechanical hypothesis) (1)气体分子当作质点,不占体积,体现气态的特性。 The gas molecules treats as the particle, it does not account for the volume, manifests the characteristic of the gaseous state