This paper addresses an electric vehicle routing problem with time window (E-VRPTW) under time-of-use (TOU) pricing where retail prices vary hour-by-hour to reflect changes in wholesale prices. The proposed solution aims minimize the electricity-cost as well traditional objectives: number of used vehicles and total travel distance. In particular, cleverly shifts battery charging off-peak period...

the main objective of this article is to present a comparative study of capital assets pricing models (capm) with extrapolating capital assets pricing models (x-capm) of companies admitted in tehran exchange market which is accomplished for the first time by investigators of this research in iran. accordingly, the statistical population under study of this research includes all companies admitt...

In order to reduce the energy consumption of furnaces and save costs in product delivery time, focus this paper is discuss uncertainty demand rolling horizon globally optimize sustainability production aluminum furnace hot section environmental economic dimensions. First, triples α/β/γ are used describe scheduling as flexible flow shop, satisfied constraints uncertainty, operation logic, capaci...

Highway construction projects are one of the most important construction projects in the world. Therefore predicting the time of these kinds of projects is important. Basically highway projects are including few activities which are repeating along the horizontal direction. One of the best methods for scheduling these types of projects is linear scheduling method. The repetitive nature of the h...

Abstract : Let be a 2nd order ODE. By Cartan equivalence method, we will study the local equivalence problem under the transformations group of time-fixed coordinates. We are going to solve this problem by an applicable method which has been recognized by R. Gardner, and classify them.   

production planning and scheduling are the most important issues of the production industries, which have a considerable influence on the productivity of the production systems. although, production planning and scheduling are in two different medium-term and short-term decision making levels, there are a very close relationship between them. ignoring this important feature in production planni...