This study attempts to uncover the truth behind an increasing number of smallholder farmers participating in sustainable coffee farming in Vietnam. Using stochastic frontier and cost-benefit analysis, a sample of 316 smallholder farmers in Dak Lak was chosen to analyze the economic impacts of...

Purpose: Innovation is considered as a core element of sustainable competitive advantage in the rapidly changing environment. However, in Vietnam, researches on innovation are very rare, which are mostly general reports without underlying analyses of innovation in firms, especially determinants...

Recall that the is a non-commutative algebra over a field k with two generators x and y satisfying Lie relation [x,y]=xy−yx = 1. In 1968 Jacques Dixmier stated a conjecture as follows: Every non zero homomorphism from A(k)into itself is an isomorphism. Until now, it is not known that Dixmier's...