The coefficient of variation (CV) of a population is defined as the ratio of the population standard deviation to the population mean. It is regarded as a measure of stability or uncertainty, and can indicate the relative dispersion of data in the population to the population mean. CV is a...

The problem of simultaneous inference and multiple comparison for comparing means of k(≥3) populations has been long studied in the statistics literature and is widely available in statistics literature. However to-date, the problem of multiple comparison of regression models has not found its...

KURZFASSUNG Auch wenn die "New Economy" schon seit längerer Zeit existiert, begann sie seit Mitte der Neunziger Jahre eine wichtige Rolle, nicht nur in der US-Wirtschaft, sondern in der gesamten Weltwirtschaft zu spielen. Es ist das Ziel dieser Arbeit zu erklären, wie die "New Economy" heute...

This paper studies the link between two popular measures of risk, that are the Value-at-Risk (VaR) and the Tail-VaR (TVaR). We study how the TVaR and VaR are related through their risk levels and characterize the underlying distributions under which this relationship is linear. A large portion...

We obtain the necessary and sufficient conditions of many kinds of proper efficiency in vector set-valued optimization by using the concept of contingent epiderivative introduced by Jahn and Rauh, also we disclose the closed relations between proper efficiency of vector set-valued optimization...

This paper assesses quantitatively the importance of living or working environmental constraints in people's activity limitations in day-to-day work/school and participation restrictions (such as joining in community activities). It applies an Ordered Logit Model to examine data from a WHO/ESCAP...