In general, vaccines are recognized as an important means to protect populations against
infectious diseases. We show that vaccines do not behave like commodity goods and …

Customized bus (CB) is an increasingly popular mode of transportation in many cities
around the world. However, studies on CB network design have mostly overlooked three …

In order to solve the uncapacitated facility location problem (UFLP) quickly and effectively,
an enhanced group theory-based optimization algorithm (EGTOA) is proposed in this paper …

Hospital site selection is an essential problem in all societies, and the allocation of the
population to these centers are included as the important optimization issues to be …

In this study, we examine a challenging green logistical problem encountered with offshore
wind farms: the integrated continuous location and maintenance routing problem wherein a …

Determining the location of earthquake emergency shelters and the allocation of affected
population to them are key issues that face shelter planning and emergency management …

The shelter location is very important for evacuation planning in natural disasters, and
evolutionary algorithms (EAs) have demonstrated their effectiveness in solving this …

This paper presents a new variant of an open vehicle routing problem (OVRP), in which
competition exists between distributors. In the OVRP with competitive time windows …

This study revisits a fuzzy rough economic order quantity (EOQ) model for deteriorating
items considering quantity discount and prepayment. Since the proposed model is a mixed …

This article presents a mixed-integer model to optimize the location of facilities and the
underlying transportation network at the same time to minimize the total transportation and …