This paper examines the effect of structural breaks on the spot–futures oil prices relationship. We explore the impact of structural breaks on four critical issues, including cointegrating relationships, market efficiency under the expectation hypothesis and the no arbitrage rule, causalities,...

This study empirically re-investigated whether carbon dioxide (CO2) emissions series were stationary in 21 OECD countries during the 1960-2000 period. A suite of test statistics were employed, proposed by Sen (2003), with a model that simultaneously allows for a break within the context of...

This study employed the activity competency model (ACM) to investigate the perceived importance of the managerial activities, skills and knowledge required by top management in the healthcare sector. A survey instrument was designed based on the ACM for data collection. It encompasses 17 initial...