We propose a parameter estimation method based on what we call the minimum decisional regret principle. We focus on mathematical programming models with objective functions that depend linearly on costs or other parameters. The approach is illustrated for cost estimation in production planning...

We define a notion of measure of discontinuity and establish an existence theorem of approximate fixed point for discontinuous set-valued maps, generalizing the fixed point theorem of Kakutani. Copyright Springer-Verlag Berlin Heidelberg 1998

We define a notion of measure of discontinuity and establish an existence theorem of approximate fixed point for discontinuous set-valued maps, generalizing the fixed point theorem of Kakutani. Copyright Springer-Verlag Berlin Heidelberg 1998

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...

In a heteroskedastic partially linear regression model, You and Chen (Technical Report, Department of Mathematics and Statistics, University of Regina, 2000) proposed a semiparametric generalized least squares estimator (SGLSE). In this paper, a jackknife-type estimator of the asymptotic...

Purpose – The goal is to examine the relationship between business process improvement initiatives (BPII), information systems (ISs) integration, and customer focus. Design/methodology/approach – The data for the study were collected at the divisional levels from a list of “Fortune 500”...

Employees communicate more easily and are more committed to the organization when beliefs and values are shared. Explores the phenomenon of sudden “lost meaning” – a situation in which individuals who strongly share the organization′s culture appear suddenly to cease to identify with the...