The aim of our work is to study the Business Model (BM) of small and micro business (SMB) in West Africa. Our research is based on a conventionalist and institutionalist approach of the concept of BM. BM and the convention are our conceptual and theoretical initial choice, while the...

This article treats energy taxation principles in the light of the need to optimise supply by non-EU suppliers. Our model distinguishes and evaluates the three terms of an optimum tax: budget, environment and strategy. Their values depend on technological data (output) and habits (consumption)...

This paper proposes to critically examine the United Nations projections on urbanisation. Both the estimates of current trends based on national data and the method of projection are evaluated. The theory of urban transition is used as an alternative hypothesis for projections. Alternative...