In this paper, a new revenue efficiency data envelopment analysis (RE-DEA) approach is considered for finding the most revenue efficient unit with price uncertainty in both optimistic and pessimistic perspectives. The optimistic and pessimistic perspectives use efficient frontier and inefficient frontier, respectively. An integrated model is introduced to find decision making units (DMUs) t...

There is an extensive literature on the asymptotic order of Sudler's trigonometric product $P_N (\alpha) = \prod_{n=1}^N |2 \sin (\pi n \alpha)|$ for fixed or "typical" values $\alpha$. In present paper we establish a structural result, which given $\alpha$ characterizes those $N$ $P_N(\alpha)$ attains particularly large values. This characterization relies coefficients in its Ostrowski expansi...

The feasibility of positive energy yield in systems with the p–11B reaction is considered here by considering refined (optimistic) data on rate. analysis was carried out within traditional framework for magnetic confinement systems, but without taking into account a particular type plasma configuration. balance both ions and electrons. particles includes all species as well products fusion (alp...