The design of closed-loop logistics (forward and reverse logistics) has attracted growing attention with the stringent pressures of customer expectations, environmental concerns and economic factors. This paper considers a multi-product, multi-period and multi-objective closed-loop logistics network model with regard to facility expansion as a facility location–allocation problem, which more cl...

We follow [18,25] and give a series of improved results for the Constrained Fault-Tolerant Resource Allocation (FTRA) problem. In FTRA, we are given a set of sites containing facilities as resources, and a set of clients consuming these resources. Specifically, each site i is allowed to open at most Ri facilities with cost fi for each opened facility. Each client j requires an allocation of rj ...

Increased occurrence of road traffic crashes in Kano metropolis has resulted a steady loss lives, injuries, and increased people's risk exposure. This study looked into the emergency response to Kano, with view improving efficiency by developing linkages synergy between Emergency Healthcare Facilities (EHCF), ambulances, crash hotspots. The geographical location attributes major EHCF, hotspots ...

Consider a population of citizens uniformly spread over the entire plane, that faces a problem of locating public facilities to be used by its members. The cost of every facility is financed by its usersonly, who in addition face an idiosyncratic private access cost to the facility. We assume that the facilities’ cost is independent of location and access costs are linear with respect to the Eu...

Consider a population of citizens uniformly spread over the entire plane, that faces a problem of locating public facilities to be used by its members. The cost of every facility is financed by its users, who also face an idiosyncratic private access cost to the facility. We assume that the facilities’ cost is independent of location and access costs are linear with respect to the Euclidean dis...

This study focuses on establishing adequate public healthcare centers to reduce disease spread and untimely death of human lives in Adama City, Ethiopia. There is considerable evidence, owing poor geographical accessibility, the primary facility not reaching majority population developing nations. case has been carried out identify prioritize suitable areas develop using a Geographic Informatio...

The goals of hub location problems are finding the location of hub facilities and determining the allocation of non-hub nodes to these located hubs. In this work, we discuss the multi-modal single allocation capacitated p-hub covering problem over fully interconnected hub networks. Therefore, we provide a formulation to this end. The purpose of our model is to find the location of hubs and the ...