This paper presents a dynamic (or multi-period) hub location problem. It proposes a branch-and-bound algorithm that uses a Lagrangean relaxation to obtain lower and upper bounds at the nodes of the tree. The Lagrangean function exploits the structure of the problem and can be decomposed into smaller subproblems which can be solved efficiently. In addition, some reduction procedures based on the...

abstract minimizing service cost and adverse effects on environment and society are important in waste management. due to this, landfill and transfer station location become important. this article as a practical research uses analytical hierarchy process in multi criteria decision making considering environmental and social criteria in levels of benefit, opportunity, cost and risk (bocr) for p...

The hub location problem with single assignment is the problem of locating hubs and assigning the terminal nodes to hubs in order to minimize the cost of hub installation and the cost of routing the traffic in the network. There may also be capacity restrictions on the amount of traffic that can transit by hubs. The aim of this paper is to investigate polyhedral properties of these problems and...

We consider important generalizations of a wide class of traditional deterministic inventory and facility location models that we call inventory/facility location models with market selection. Instead of the traditional setting, we are given a set of markets, each specified by a sequence of demands and associated with a revenue. Decisions are made in two stages. We first make a decision of what...

We propose a novel hub location model that jointly eliminates some of the traditional assumptions on structure network and discount as result economies scale in an effort to better reflect real-world logistics transportation systems. Our extends literature various facets: instead connecting nonhub nodes directly nodes, we consider routes with stopovers; pairs hubs directly, design can visit sev...

in this paper, we study the problem of integrated capacitated hub location problem and seat inventory control considering concept and techniques of revenue management. we consider an airline company maximizes its revenue by utilizing the best network topology and providing proper booking limits for all itineraries and fare classes. the transportation system arises in the form of a star/star net...

The increasing demand for multimodal freight transportation makes the expansion of new secondary hubs necessary. carbon tax has also received attention from various sectors due to development requirements green transportation. Therefore, this study proposed a transport hub location problem, where emissions are specifically considered achieve strategic planning. A mixed integer non-linear progra...

We investigate a variant of the many-to-many hub location-routing problem which consists in partitioning the set of nodes of a graph into routes containing exactly one hub each, and determining an extra route interconnecting all hubs. A variable neighborhood descent with neighborhood structures based on remove/add, swap and exchange moves nested with routing and location operations is used as a...