Stochastic nonparametric envelopment of data (StoNED) combines the virtues of data envelopment analysis (DEA) and stochastic frontier analysis (SFA) into a unified framework of frontier estimation. StoNED melds the nonparametric piece-wise linear DEA-type frontier with stochastic SFA-type inefficiency and noise terms. We show that the StoNED model can be estimated in the panel data setting in a...

Abstract The use of natural resources as an input to economic growth and the interactions between ecological systems have resulted in accumulation environmental externalities. This can negatively affect future levels welfare growth. In this paper, such dynamics are assessed quantified by introducing explicit externality variables a production function. is performed endogenous model where cumula...

This paper offers a review of investment performance appraisal methods. The review starts with an exhaustive coverage of various methods ranging from early measures of risk-adjusted return to more recent methods including the rating given by ASSIRT, a financial services organisation that assess managed investment in Australia. We then extend the discussion to performance evaluations based on th...

The stock market is considered essential for economic growth and expected to contribute to improved productivity. An efficient pricing mechanism of the stock market can be a driving force for channeling savings into profitable investments and thus facilitating optimal allocation of capital. This study investigated the technical efficiency of selected groups of companies of Bangladesh Stock Mark...

this study investigates the effects of inputs on production risk of sugar beet  farmers in fars province. the study carried out in 1996. the needed data  were collected by completing questionnaire  from 120 farmers in fars selected through a two-stage cluster sampling survey. the results showed that pesticide, animal fertilizer, seed and irrigation have significant effects on production changes...

The normal-gamma stochastic frontier model was proposed in Greene (1990) and Beckers and Hammond (1987) as an extension of the normalexponential proposed in the original derivations of the stochastic frontier by Aigner, Lovell, and Schmidt (1977). The normal-gamma model has the virtue of providing a richer and more flexible parameterization of the inefficiency distribution in the stochastic fro...