Olivares-Benitez, Elias
Main Affiliation
Preferred name
Olivares-Benitez, Elias
Official Name
Olivares Benítez, Elias
ORCID
0000-0001-7943-3869
Researcher ID
R-7075-2018
Scopus Author ID
55574580400
50 results
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Item type:Publication, A Memetic Algorithm for the Cumulative Capacitated Vehicle Routing Problem Including Priority Indexes(2020); ; <jats:p>This paper studies the Cumulative Capacitated Vehicle Routing Problem, including Priority Indexes, a variant of the classical Capacitated Vehicle Routing Problem, which serves the customers according to a certain level of preference. This problem can be effectively implemented in commercial and public environments where customer service is essential, for instance, in the delivery of humanitarian aid or in waste collection systems. For this problem, we aim to minimize two objectives simultaneously, the total latency and the total tardiness of the system. A Mixed Integer formulation is developed and solved using the AUGMECON2 approach to obtain true efficient Pareto fronts. However, as expected, the use of commercial software was able to solve only small instances, up to 15 customers. Therefore, two versions of a Memetic Algorithm with Random Keys (MA-RK) were developed to solve the problem. The computational results show that both algorithms provided good solutions, although the second version obtained denser and higher quality Pareto fronts. Later, both algorithms were used to solve larger instances (20–100 customers). The results were mixed in terms of quality but, in general, the MA-RK v2 consistently outperforms the first version. The models and algorithms proposed in this research provide useful insights for the decision-making process and can be applied to solve a wide variety of business situations where economic, customer service, environmental, and social concerns are involved.</jats:p>Scopus© Citations 14 1 10 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, An Analysis and Design for the Repair Process of Late Show Shipments in the Export Cargo Process at SPL HUB(2022)1 7 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Cumulative Capacitated Vehicle Routing Problem Including Priority Indexes(2020); ; Scopus© Citations 1 1 6 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, 1 34Scopus© Citations 3 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The Capacitated Lot Sizing Problem with Batch Ordering: A MILP and Heuristic Approach(2019); ; 1 11 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Implementation of Lean Manufacturing to Reduce the Delivery Time of a Replacement Part to Dealers: A Case Study(2019); Scopus© Citations 22 2 10 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Multiobjective model to optimize charging station location for the decarbonization process in Mexico(2025); 37 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Capacitated Vehicle Routing Model for Distribution and Repair with a Service Center(MDPI, 2025); ; <jats:p>Background: Distribution systems often face the dual challenge of delivering products to customers and retrieving damaged items for repair, especially when the service center is separate from the depot. An optimized solution to this logistics problem produces benefits in terms of costs, greenhouse gas emissions, and disposal reduction. Methods: This research proposes a Capacitated Vehicle Routing Problem with Service Center (CVRPwSC) model to determine optimal routes involving customers, the depot, and the service center. AMPL-Gurobi was used to solve the model on adapted instances and new instances developed for the CVRPwSC. Additionally, a Variable Neighborhood Search (VNS) algorithm was implemented and compared with AMPL-Gurobi. Results: The model was applied to a real-world case study, achieving a 40% reduction in fuel costs, a reduction from 5 to 3 routes, and a sustainable logistics operations model with potential reductions of greenhouse gas emissions and item disposals. Conclusions: The main contribution of the proposal is a minimum-cost routing model integrating item returns for repair with customer deliveries, while the limitation is the exclusion of scenarios where return items exceed vehicle capacity. Finally, future research will enhance the CVRPwSC model by incorporating additional constraints and decision variables to address such scenarios.</jats:p>18 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, A Two-Phase Heuristic and Genetic Algorithm for the Heterogeneous Fleet Vehicle Routing Problem(Springer Nature Switzerland, 2026); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Secuenciación de trabajos en una línea de SMT con enfoque multiobjetivoA partir de 1850, los sistemas productivos han evolucionado de forma muy rápida, especialmente a partir del último tercio del siglo xx, debido a la globalización y a la competencia empresarial, regida por la capacidad de los países para producir de manera más eficiente que los demás. De esta manera, estos países tienen dominio, a nivel mundial, de los ámbitos industrial y tecnológico; las naciones más desarrolladas son, por consecuencia, los Estados más ricos, en su mayoría producto de sus estrategias de producción. Esta situación es efecto, precisamente, de dicha evolución que incluye la administración de los sistemas, los procesos y la tecnología. En este sentido, cuando inició la revolución industrial, el esfuerzo del empresario se enfocó en lograr producir lo máximo posible, aun a costa de la seguridad de su personal. Sin embargo, esta forma de proceder tuvo que mejorar al avanzar el tiempo y desarrollar una mejor experiencia en actividades productivas, logrando la evolución e identificar así diferentes medios para lograr la administración de operaciones, a finales del siglo xix y principios del XX. La administración de operaciones tiene como razón de ser, la utilización de técnicas y metodologías que logren la coordinación de las áreas funcionales de la empresa con el área de producción. En esta administración se agrupan técnicas de mejora continua, control de producción, cuidado de la planta y la maquinaria, la logística de la empresa, así como la optimización de procesos, sin importar que sea empresa de bienes o servicios.21