The question of increasing biofuels production and the development of different biofuels production technologies has become controversial. On the one hand, production of corn-based biofuels creates a ‘food/feed vs. fuel’ tradeoff condition, along with subsequent uncertainties for both...

This paper describes a linear programming formulation and vector analysis which aims at presenting an evaluation of the available tourism forms of Dirfis area as part of a greater development planning for altering the tourism development in the area. The target of the present paper is to...

This paper describes a linear programming formulation and vector analysis which aims at presenting an evaluation of the available tourism forms of Dirfis area as part of a greater development planning for altering the tourism development in the area. The target of the present paper is to...