Since Markowitz [Markowitz, H. M. (1952). Portfolio selection. The Journal of Finance, 7, 77-91.], mean-variance theory has assumed that risky-asset returns to be random variables. The theory deals with this uncertainty by further assuming that investors hold homogeneous beliefs regarding the...

This paper is written with two complementary purposes in mind. The first is to provide estimates of systematic risk for Canadian commodities futures (western barley, canola, flaxseed, feed wheat) using a market portfolio based on a similar weighting scheme suggested by Marcus. The second is to...

Purpose – Although the mean-variance portfolio selection model has been investigated in the literature, the difficulty associated with the application of the model when dealing with large-scale problems is limited. The aim of this paper is to close the gap by using the quadratic risk (standard...

Although the relationship between economic freedom and equity returns has been investigated in the literature, the Middle East and North Africa (MENA) equity markets were usually excluded. The aim of this paper is to fill in this gap by examining the relationship between economic freedom index...

Although the relationship between oil prices and exchange rates has been investigated extensively in the literature, the results remain mixed. The aim of this article is to revisit this relationship allowing for nonlinear dynamics in the speed of adjustment to the equilibrium. This article...

PPurpose – The purpose of this paper is to focus on the perceptions that undergraduate students formed and provides further insight into the relationship between perceived teaching quality (with its descriptors) and student motivation. Design/methodology/approach – The paper reports the...

Purpose – Although the mean-variance portfolio selection model has been investigated in the literature, the difficulty associated with the application of the model when dealing with large-scale problems is limited. The aim of this paper is to close the gap by using the quadratic risk (standard...

This paper is written with two congruent objectives. The first is to develop a framework for individual tests of significance of a fuzzy regression model by employing a simple probabilistic estimation procedure. The proposed test, based on two-phase fuzzy regression estimates, is simple and...