Defective capital assets may be quickly restored to their operational condition by replacing the item that has failed. The item that is replaced is called the Line Replaceable Unit (LRU), and the so-called LRU definition problem is the problem of deciding on which item to replace upon each type of failure: when a replacement action is required in the field, service engineers can either replace ...

The CAPM model assumes stock returns to be a linear function of the market return. However, there is considerable evidence that the beta stability assumption commonly used when estimating the model is invalid. Nonparametric regression methods are used to examine the stability of beta coefficients in German stock returns. Since local polynomial regression is used for estimation, known methods fo...

In this paper, we develop the modified maximum likelihood (MML) estimators for the multiple regression coefficients in linear model with the underlying distribution assumed to be symmetric, one of Student's t family. We obtain the closed form of the estimators and derive their asymptotic properties. In addition, we demonstrate that the MML estimators are more appropriate to estimate the paramet...

The mathematical programming technique Data Envelopment Analysis is used to test the hypothesis of Averch and Johnson that utility regulation leads to overuse of capital. The regulated firm earns a return s greater than its cost of capital r, an implicit capital subsidy resulting in allocative inefficiency. Technical and Allocative inefficiency are based on Cost and Production Frontiers from 33...

The online version of A Behavioral Approach to Asset Pricing by Hersh Shefrin. Part III: Developing Behavioral Asset Pricing Models.A unified behavioral approach to asset pricing requires a general definition of sentiment. Objective pdf and the individual investors subjective pdf. ÂœA mathematical-economist-turned-behavioral-economist, Hersh Shefrin challenges and delights the reader by applyin...