Performance evaluation of electricity distribution units is an important issue between researchers and regulators. Classic Data Envelopment Analysis models with deterministic data have been used by many authors to measure efficiency of power distribution units in different countries. However, Data Envelopment Analysis with stochastic data are rarely used to measure efficiency of distribution co...

Slope stability analysis is one of the most important tools to determine both natural as well man-made slopes. The main objective this study compare safety factor Jure landslide before and after an earthquake occurrence using Geostudio QUAKE/W module. Three different positions water table (top, middle bottom debris) were considered for study. factors deterministic probabilistic case are determi...

this paper proposes a suitable benchmark for inefficient commercial bank branches by using data envelopment analysis (dea). in order to render an inefficient bank branch efficient, it is necessary to decrease inputs and increase outputs. as there are priorities for decreasing some certain inputs and increasing some certain outputs over other inputs and outputs, respectively, it is necessary to ...

The most commonly used model of solar cells is the single-diode model, with five unknown parameters. First, this paper proposes three variants which imply voltage dependence series resistance, parallel and both resistors. Second, analytical relationships between current expressed were derived using Lambert W function for each proposed model. Third, presents a hybrid algorithm, Chaotic Snake Opt...

in this paper, the dynamic simulation for a high pressure regulator is performed to obtain the regulator behavior. to analyze the regulator performance, the equation of motion for inner parts, the continuity equation for diverse chambers and the equation for mass flow rate were derived. because of nonlinearity and coupling, these equations are solved using numerical methods and the results are ...