A correlation between regressors and disturbances presents challenging problems in linear regression. Issues like omitted variables, measurement error and simultaneity render ordinary least squares (OLS) biased and inconsistent. In the context of heteroscedastic linear regression, this note...

At present rising of obesity becomes a principal public global health and economic concern. In 1997, the World Health Organization (WHO) has declared the obesity as global epidemic. About one-third of the world population is now suffering from overweight or obesity. It is estimated that some...

We examine stock market responses during the COVID-19 pandemic period using fractional integration techniques. The evidence suggests that stock markets generally follow a synchronized movement before and the stages of the pandemic shocks. We find while mean reversion significantly declines, the...

“Problems Book to Accompany Mathematics for Economists” is intended to complement any course in quantitative methods in economics, mathematical economics for undergraduate students or introductory mathematical economics for graduate students. It is aimed as an inexpensive supplement to...

La gestion des stocks des produits laitiers est un défi en raison de sa nature périssable. Le succès de nombreuses entreprises est lié à leur capacité à fournir des biens et des services au bon moment et au bon endroit. Différentes organisations adoptent différentes méthodes de gestion...

The Ponderal Index (PI) is an essential measure to study physical growth of fetus, infants, newborn babies, adolescents, and adults. Lower PI is found among the malnourish infants and newborn babies and higher in obese ones. PI is also applied in maternity treatment to detect impaired fetal...

The purpose of this paper on the study of Quantitative and Qualitative finance aims to bring forward new innovation in Data Science Methodologies. In this publication a unique equation form. F(x) = A·Sin (x)+ B · Cos (x) + C · Tan (x) + ɸ (n) + M(c) + F(n) Is given to pursue the analysis of...

The purpose of this paper on the study of Quantitative and Qualitative finance aims to bring forward new innovation in Data Science Methodologies. In this publication a unique equation form… F(x) = A·Sin (x)+ B · Cos (x) + C · Tan (x) + ɸ (n) + M(c) + F(n) Is given to pursue the analysis...

La gestion des stocks des produits laitiers est un défi en raison de sa nature périssable. Le succès de nombreuses entreprises est lié à leur capacité à fournir des biens et des services au bon moment et au bon endroit. Différentes organisations adoptent différentes méthodes de gestion...

Empirical support for the long-run Fisher effect, a hypothesis that a permanent change in inflation leads to an equal change in the nominal interest rate, has been hard to come by. This paper provides a plausible explanation of why past studies have been unable to find support for the long-run...