Purpose: Examination of the determinants of profitability in the U.S. domestic airline industry by considering operations strategy, productivity, and service measures, while focusing the attention on the effects of the 9/11 attack. Design/methodology/approach: We propose a series of hypotheses regarding the effect of operations strategy, productivity, and service before and after the 9/11 attac...

The study examined gender analysis of energy use for Rice production in north central Nigeria using a sample of 60 Rice farmers. An analysis of gender relations provides the information on the different conditions men and women face, and the different effects that policies and programs may have on them. Simple descriptive statistics were used to analyze the data. Energy efficiency and energy pr...

Among the various hereditary diseases that have been widely studied in dairy cattle, bovine leukocyte adhesion deficiency (BLAD), deficiency of uridine-5-monophosphate synthase (DUMPS), and complex vertebral malformation (CVM) are noteworthy because of their high impact on overall herd productivity as a consequence of increased calf mortality. The aim of this study was to verify the frequency o...

When evaluating investments in energy supply and generation infrastructure nowadays, one is confronted with multiple sources of uncertainty. Examples for such uncertainties are the liberalization of power markets, regulatory uncertainties regarding CO2 pricing mechanisms or the level of feed-in tariffs for renewable energies, and the volatility of fuel prices. The objective of this thesis is to...

We study how total factor productivity (TFP), energy prices and the great moderation are linked. First, we estimate a joint stochastic process for the energy price and TFP and establish that until 1982:II, energy prices negatively affected productivity. This spill-over has since disappeared. Second, we show that within the framework of a Dynamic Stochastic General Equilibrium (DSGE) model, the ...