This study proposes a mathematical optimization model for a two-echelon location-routing problem in the last-mile delivery e-commerce environment. The e-commerce firm delivers each customer's demand at home or through delivery points. Customers could be unavailable when the vehicle arrives at...

This study seeks to examine how a company can select the best intermediary for its Marketing channels with minimum of criteria and time. A theoretical framework is proposed based on the most important tasks of intermediary and the criteria to measure them. There are four basic tasks and thirty...