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Cardenas-Barron L.E.,Monterrey Institute of Technology | Chung K.-J.,Chung Yuan Christian University | Chung K.-J.,National Taiwan University of Science and Technology | Chung K.-J.,Shih Chien University | And 2 more authors.
International Journal of Production Economics | Year: 2014

This writing presents a brief introduction to the papers included in the special issue "Celebrating a century of the economic order quantity model in honor of Ford Whitman Harris" published by the International Journal of Production Economics. Forty-one papers covering an extensive scope of inventory management have been incorporated in this volume from contributing authors from 20 countries located in America, Asia, Europe and Africa. This special issue also provides a basis for new directions in inventory management research. Source


Cardenas-Barron L.E.,Monterrey Institute of Technology | Gonzalez-Velarde J.L.,Monterrey Institute of Technology | Trevino-Garza G.,BNSF Railway Company
Computers and Operations Research | Year: 2015

This research work deals with the multi-product multi-period inventory lot sizing with supplier selection problem. Formerly, this kind of problem was formulated and solved using an exhaustive enumeration algorithm and a heuristic algorithm. In this paper, a new algorithm based on a reduce and optimize approach and a new valid inequality is proposed to solve the multi-product multi-period inventory lot sizing with supplier selection problem. Numerical experiments ratify the success of the proposed heuristic algorithm. For the set of 150 benchmark instances, including 75 small-sized instances, 30 medium-sized instances, and 45 large-sized instances, the algorithm always obtained better solutions compared with those previously published. Furthermore, according to the computational results, the developed heuristic algorithm outperforms the CPLEX MIP solver in both solution quality and computational time. © 2015 Elsevier Ltd. All rights reserved. Source


Dedmon S.L.,Standard Steel LLC | Guzel H.,BNSF Railway Company
2011 Joint Rail Conference, JRC 2011 | Year: 2011

Classic shelling of a railway wheel begins with crack initiation resulting from wheel rail interactions. This investigation shows the complex relationships that occur between contact stress, cold work, residual stresses, and temperatures from brake heating and non-metallic inclusion types which can lead to the formation of shelling cracks. Our investigation also includes an explanation of how these interactions affect mechanical properties such as yield strength, elastic modulus, and ductility. In turn, mechanical property changes also affect how cold work and its associated residual stresses develop under cyclic loading. Destructive testing and Finite Element Analyses were used in support of this work. © 2011 by ASME. Source


Cardenas-Barron L.E.,Monterrey Institute of Technology | Trevino-Garza G.,BNSF Railway Company | Taleizadeh A.A.,University of Tehran | Vasant P.,Petronas University of Technology
Mathematical Problems in Engineering | Year: 2015

The determination of production-shipment policies for a vendor-buyer system is dealt within this paper. The main objective is to derive the optimal replenishment lot size and shipment policy for an EPQ inventory model with multiple deliveries and rework. This inventory model contains two decision variables: the replenishment lot size and the number of deliveries. Previous researches solve this inventory model considering both variables to be continuous. However, the number of deliveries must be considered as a discrete variable. In this direction, this paper solves the inventory model considering two cases: Case 1: the replenishment lot size as a continuous variable and the number of shipments as a discrete variable and Case 2: the replenishment lot size and the number of shipments as discrete variables. The final results are two simple and easy-to-apply solution procedures to find the optimal values for the replenishment lot size and the number of deliveries for each case. © 2015 Leopoldo Eduardo Cárdenas-Barrón et al. Source


Patent
BNSF Railway Company | Date: 2013-08-27

A container according the present application includes a container auto-lock system. The container auto-lock system is integrated into the outboard apertures of the lower castings of a domestic sized container. The container auto-lock system includes a locking mechanism which is configured to recess when the container is lowered onto a surface lacking an acceptable receiving aperture. The locking mechanism is also configured to automatically lock when placed on top of a domestic sized container. The container auto-lock system is configured to be compatible with international sized container by allowing the inboard apertures on each lower casting to be available for attaching the domestic container on top of an international container with a conventional locking device.

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