Browsing by Autor "Fidel Torres"

Now showing 1 - 4 of 4

A Stackelberg Approach to Transport Infrastructure Planning: Integrating User Decision-Making
(RELX Group (Netherlands), 2024) Oscar Mauricio Cepeda Valero; Fidel Torres; Andrés D. González
Inventory models for managing deteriorating products: a literature review
(2020) Freddy Andrés Pérez; Fidel Torres
The problem of determining the economic order quantity has long attracted the attention of researchers, and several models have been developed to meet requirements under different circumstances at minimum cost. In the present paper, we conduct a structural content analysis of 317 selected peer-reviewed research articles that were published during the period 2001-2018 and ranked with a quartile score of Q1 by either ISI or Scopus database. By discussing the main topics of the inventory modeling literature, we provide a comprehensive view of the past research dealing with the management of deteriorating items. Here, we focus on items undergoing physical modification during the planning period, which encompasses a wide variety of products such as fresh produce, processed food, pharmaceuticals and blood products. Therefore, based on our holistic analysis, we identify new trends and we highlights crucial research opportunities to develop more comprehensive and practical models.
Modeling a Coordinated Manufacturer–Buyer Single-Item System Under Vendor-Managed Inventory
(Springer Science+Business Media, 2013) Fidel Torres; Frank Ballesteros; Marcela Villa
Modelo matemático de un sistema coordinado productor-comprador bajo el enfoque VMI
(Universidad Internacional de La Rioja, 2012) Fidel Torres; Frank Ballesteros; Marcela Villa
This work develops a new coordinated manufacturer-buyer model for a single item in a vendor-managed inventory (VMI) context. The proposed model includes the manufacturing uptime and a manufacturer-buyer\nsynchronization scheme. This mechanism makes logistical coordination between manufacturer and buyer much easier. The analysis of the mathematical\nmodel of coordination considers production and demand rates, as well as totals of the manufacturer and the buyer�s ordering and holding inventory\ncosts. This study is complemented by a sensitivity analysis. It focuses on the effects of parameter variations on proposed performance measurements in\nthe manufacturer-buyer VMI coordinated scheme. Finally, analytical conditions under which the suggested coordinated implementation of VMI gives benefits to both manufacturer and buyer and to the supply chain are deduced and verified.