A quantization can be seen as a way to construct differential operator with prescribed principal symbol. The map from the space of symbols operators is moreover required linear bijection. In general, there no natural procedure, that is, spaces and are not equivalent, if action local diffeomorphisms taken into account. However, considering manifolds endowed additional structures, one seek for qu...

INTRODUCTION Adulthood male hypogonadism (HG) is the most common form of HG. Although testosterone (T) replacement therapy (TRT) is the most common way of treating HG, other options are available depending on patient's needs and expectations. AREAS COVERED We analyze alternative options to TRT as a medical intervention in treating HG. Gonadotropin (Gn) therapy is the treatment of choice in me...

| This paper aims at studying the trajectory planning for a car| i.e. a non holonomic vehicle whose turning radius is lower bounded|in a static and structured world. As for the structure of the world, we assume the existence of natural lanes within which the vehicle is able to move. The contribution of this paper is a smooth trajectory planner which, when given the polygonal line S representing...

This paper examines the causal relationship between energy use and real GDP for the period 1967-2002 in Iran. The results of Phillips- Perron test indicate that the real GDP and the four categories of energy, i.e. coal, oil, gas, and hydroelectric energy are integrated of order one. Besides, the Johansen — Juselius maximum likelihood co- integration tests imply the existence of Granger causalit...