The issue of social development has attracted global attention especially in countries that have huge resources without commensurate reflection on welfare. Some developed levy heavy taxes their citizens' income but provide adequate facilities to drive the economy. African oil-producing ones, long relied crude oil revenue recently realize need improve tax collection. In view fact constitutes lar...

This paper estimates a class of models which satisfy a monotonicity condition on the conditional quantile function of the response variable. This class includes as a special case the monotonic transformation model with the error term satisfying a conditional quantile restriction, thus allowing for very general forms of conditional heteroscedasticity. Furthermore, the monotonicity condition enab...

BACKGROUND Cardiovascular disease (CVD) is the main cause of morbidity and mortality worldwide, but it also is highly preventable. The prevention rate mainly depends on the patients' readiness to follow recommendations and the state's capacity to support patients. Our study aims to show that proper primary care can decrease the CVD-related morbidity rate and increase the economic efficiency of ...