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Now showing items 1-10 of 19

#### Manufacturer's mixed pallet design problem

(Elsevier, 2008)

We study a problem faced by a major beverage producer. The company produces and distributes several brands to various customers from its regional distributors. For some of these brands, most customers do not have enough ...

#### Polyhedral analysis for the two-item uncapacitated lot-sizing problem with one-way substitution

(Elsevier, 2009-07-28)

We consider a production planning problem for two items where the high quality item can
substitute the demand for the low quality item. Given the number of periods, the demands,
the production, inventory holding, setup ...

#### The hierarchical hub median problem with single assignment

(Elsevier, 2009)

We study the problem of designing a three level hub network where the top level consists of a complete network connecting the so-called central hubs and the second and third levels are unions of star networks connecting ...

#### Generating facets for the independence system

(Society for Industrial and Applied Mathematics, 2009)

In this paper, we present procedures to obtain facet-defining inequalities for the independence system polytope. These procedures are defined for inequalities which are not necessarily rank inequalities. We illustrate the ...

#### Star p-hub median problem with modular arc capacities

(Elsevier, 2008)

We consider the hub location problem, where p hubs are chosen from a given set of nodes, each nonhub node is connected to exactly one hub and each hub is connected to a central hub. Links are installed on the arcs of the ...

#### The integer knapsack cover polyhedron

(Society for Industrial and Applied Mathematics, 2007)

We study the integer knapsack cover polyhedron which is the convex hull of the set of vectors x ∈ ℤ+ n that satisfy C T x ≥ b, with C ∈ ℤ++ n and 6 ∈ ℤ++. We present some general results about the nontrivial facet-defining ...

#### Solving the hub location problem in a star-star network

(John Wiley & Sons, 2008)

We consider the problem of locating hubs and assigning terminals to hubs for a telecommunication network. The hubs are directly connected to a central node and each terminal node is directly connected to a hub node. The ...

#### The latest arrival hub location problem for cargo delivery systems with stopovers

(Elsevier, 2007)

In this paper, we concentrate on the service structure of ground-transportation based cargo delivery companies. The transient times that arise from nonsimultaneous arrivals at hubs (typically spent for unloading, loading, ...

#### Restricted robust uniform matroid maximization under interval uncertainty

(Springer, 2007)

For the problem of selecting p items with interval objective function coefficients so as to maximize total profit, we introduce the r-restricted robust deviation criterion and seek solutions that minimize the r-restricted ...

#### Modeling change in a health system: implications on patient flows and resource allocations

(Canadian Society for Clinical Investigation, 2005)

This work is motivated by the recent changes in the health system in Turkey, which is a consolidation of health insurance funds, and its implications on the resource allocations and the flow of patients in the system. Our ...