Location Optimization Model of Rural Express Station with Vehicle Routes Consideration

Intra market optimization for express package carriers with station to station travel and proportional sorting

The flow of packages of an express package carrier consists of pick ups at costumer locations by couriers and delivering the packages to a local station for sorting. The packages are then transported to a major regional sorting facility called the ramp. At the ramp, packages can be sorted again before departing to a hub. From the hub they are moved to the destination ramp, where the entire proc...

A Goal Programming Model for Single Vehicle Routing Problem with Multiple Routes

The single vehicle routing problem with multiple routes is a variant of the vehicle routing problem where the vehicle can be dispatched to several routes during its workday to serve a number of customers. In this paper we propose a goal programming model for multi-objective single vehicle routing problem with time windows and multiple routes. To solve the model, we present a heuristic method wh...

UMTS Base Station Location Planning with Invasive Weed Optimization

The problem of finding optimal locations of base stations, their pilot powers and channel assignments in UMTS mobile networks belongs to a class of NP-hard problems, and hence, metaheuristics optimization algorithms are widely used for this task. Invasive Weed Optimization (IWO) algorithm is relatively novel and succussed in several real-world applications. Our experiments demonstrate that the ...

Emergency Service Vehicle Location Problem with Batch Arrival of Demands

In this paper an emergency service vehicle (ESV) location problem has been considered in which it is assumed that each emergency call may require more than one ESV. In ESV location problem two factors should be known; the location of stations and the number of ESVs at each station. Hence, a nonlinear mixed integer programming model is presented in order to maximize the total response rate to th...

A Study on Performance of Simplified Vehicle Models in Optimization of Hydraulic Engine Mounts in Comparison with Full-Vehicle Model