In this study, we propose a container slot allocation problem for a liner shipping service. A
liner containership provides a regular shipping service with a fixed itinerary and schedule. In …

We consider clustering problems with {\em non-uniform lower bounds and outliers}, and
obtain the {\em first approximation guarantees} for these problems. We have a set $\F $ of …

This paper presents an optimization model for the selection of sets of clients that will receive
an offer for one or more products during a promotion campaign. We show that the problem is …

We study the lower-bounded facility location problem which generalizes the classical
uncapacitated facility location problem in that it comes with lower bound constraints for the …

Transportation companies that operate in seasonal markets where differences in demand
occur in peak and nonpeak periods often negotiate for some form of demand smoothing with …

In this work, we investigate transit time in transportation service procurement, which is
conducted by shippers using auctions to purchase transportation service from carriers in the …

We consider the lower-bounded facility location (LBFL) problem, which is a generalization of
uncapacitated facility location (UFL), where each open facility is required to serve a certain …

This paper addresses the issue of transportation services sourcing using the mix of contract-
based and on-demand sourcing. The model considers when the demand is fluctuating …

This article deals with the multi-stage production–shipping and distribution–scheduling
problem in the aluminium industry. Related processes take place in worldwide operating …

One of the key issues in transportation systems is allocating shipping orders to the most
appropriate drivers in the shortest time and with the maximum profit. Many studies were …