Abstract—This study focuses on the cooling of a photovoltaic panel (PV). Indeed, the cooling improves the conversion capacity of this one and maintains, under extreme conditions of air temperature, the panel temperature at an appreciable level which avoids the altering. To do this, a fan provides forced circulation of air. Because the fan is supplied by the panel, it is necessary to determine t...

Using data for all 2,454 municipalities of Mexico for the period 1980-2010, this paper analyzes the relationship between exposure to extreme temperatures and mortality rates. I find that severe heat increases mortality, while the health effect of severe cold is generally trivial. I show that exchanging one day with a temperature of 16-18 °C for one day with temperatures higher than 30 °C increa...

Given a unital C*-algebra A, letMm?n(A) be the set of all m?n matrices algebra over A and (Mn(A))1 closed unit ball Mn?n(A). Let x =(a b 0 c) ? (Mm+n(A))1 determined by Mm?m(A), Mm?n(A) c Some characterizations are given such that above upper triangular matrix is an extreme point Xm,n(A) respectively, where subset (Mm+n(A)) 1 consisting matrices.

One of the main issues in addressing three-dimensional packing problems is finding an efficient and accurate definition of the points where to place the items inside the bins. The performance of exact and heuristic methods is actually strongly influenced by the choice of a placement rule. We introduce the Extreme Point concept and present a new Extreme Point-based rule for packing items inside ...