We study the optimal production planning and major maintenance scheduling for an unreliable manufacturing system. We assume that the production unit experiences progressive deterioration that negatively influences product quality. For the production policy, we extend improve traditional threshold policies with a superior alternative, based on a just-in-time (JIT) strategy. The paper brings a new vision on the importance of implementing more effective production strategies based on JIT methods, instead of traditional threshold policies. When a failure occurs, the production unit is minimally repaired, and when the major maintenance is selected, the machine is restored to brand-new conditions. The objective of the model is to determine the simultaneous JIT production and major maintenance strategy that minimizes the total cost. Due to the stochastic features of the system, a simulation-based optimization approach is proposed, which combines the descriptive capabilities of simulation modeling with analytical models, statistical analysis, and optimization techniques. The results verify that the proposed simulation–optimization approach provides new and coherent results that highlight the strong influence of quality deterioration on the determination of the control parameters. A sensitivity analysis and a comparative study are conducted to illustrate that significant cost savings could be obtained with the proposed approach.

Considering that currently in Mexico there is a trend toward greater consumption of natural products that benefit health and that, in the long term, do not produce adverse effects, the objective of this research is to evaluate if the main extracts and by-products derived from the roselle flower can be considered strategic, based on its properties, impact on health, value chain and that Mexico is one of the 10 main producers worldwide. For this, the following method was used: a) research on the roselle flower and its benefits to humans were compiled and analyzed; b) the information was analyzed with the Delphi tool; c) a dendrogram was developed to categorize the relevance in its use, and, d) the value chain of the processes that make up its supply chain was analyzed to determine its conditions and potential. The results show that it does not present toxic or mutagenic activity and that it has a great impact in 3 aspects: alternative medicine, as a disinfectant and food supplement. It was found that its value chain is incipient, but with potential in: planting regions, research centers and links with the industrial sector for its use, marketing and sales coverage.

La sustentabilidad es un término que ha prevalecido por décadas, desde la preocupación por generar un equilibrio entre el crecimiento económico y la naturaleza, hasta su integración en el ámbito empresarial. Esto último, se inició por razones éticas, después como requisito para cumplir con aspectos normativos y, recientemente, según la evidencia, para aumentar el valor de mercado. El objetivo del trabajo es presentar una revisión general de las diferentes propuestas de modelos de negocio con enfoque sustentable, para entender sus características, limitaciones y el valor que ofrecen. Se aplicó una perspectiva cualitativa, a través de la revisión sistemática de la literatura en el portal de investigación Web of Science (WoS) de Clarivate Analytics, y un análisis de 40 documentos. Por su relevancia, destacan cinco propuestas: Modelo de Negocio Sustentable, Modelo de Negocio Verde o Ecológico, Modelo de Negocio Circular, Innovación en el Modelo de Negocio Sustentable e Innovación en el Modelo de Negocio Verde. El que una empresa se posicione como sostenible implica no solo alinear los objetivos económicos con las necesidades de la sociedad y el ambiente, sino también, generar e impulsar los cambios necesarios para lograrlo. Códigos JEL: M10, Q51, Q56. Recibido: 23/11/2023. Aceptado: 14/03/2024. Publicado: 19/04/2024.

Material management is a critical component of any organization, as it encompasses the efficient and effective handling of materials throughout the entire supply chain process. Just-in-time (JIT) strategies play a vital role in streamlining the supply chain process and minimizing waste. The paper examines the optimization of JIT production management, quality, and maintenance planning in the context of material management. An integrated model is proposed based on optimal control theory to formulate a set of innovative systems dynamics that consider quality decline in a stochastic context. The model also includes random demand fluctuations through a stochastic diffusion process. The objective of the model is to enhance company competitiveness by satisfying a service level constraint and jointly optimizing the JIT production and maintenance control parameters to minimize inventory levels and reduce the total cost. The findings reveal significant interactions between costs and control parameters of both JIT production and maintenance strategies due to their close relationship, leading to the conclusion that the development of an integrative model is more cost-efficient than managing them independently. A comparative analysis further enhances the study by highlighting the potential cost savings in implementing the suggested collaborative control strategy. Overall, the paper contributes to the literature on material management by addressing the research gap in the optimization of JIT production management, quality, and maintenance planning under a stochastic context.

This paper addresses the situation of an industrial park in Mexico from the perspective of its community. It exposes a case study approach with the points of view of residents, businesses, and authorities to improve the socioeconomic conditions of the region: Sahagun, Hidalgo. The result of this article comes from a project ran by the Ministry of Economy of the state, to trigger the development of this area. The background of the topic is presented, its theoretical basis, and the methodological design. Finally, an integrative model is exposed to show the necessary actions to articulate enterprises—the society and the government to develop the town.

Objetivo Validar la Escala de Identidad Organizacional (IDN) de algunas instituciones mexicanas de servicios de salud a través de análisis confirmatorio. Métodos Se utilizó una escala de identidad de quince ítems aplicados a una muestra de 214 trabajadores pertenecientes a seis clínicas de servicios de salud en el Estado de Hidalgo, México. Resultados El análisis de fiabilidad indicó que la IDN posee consistencia interna adecuada. Los anáisis factorial exploratorio y confirmatorio permitieron identificar una estructura de tres factores (orgullo, pertenencia y significado). El factor orgullo muestra cargas estimadas más elevadas. Conclusión La versión final del instrumento presenta confiabilidad y validez adecuadas para la medición de la identidad organizacional. Objective To validate the Organizational Identity Scale (IDN) for Mexican health service institutions through confirmatory analysis. Methodology We applied a fifteen-item identity scale to a sample of 214 workers from six health service clinics in Hidalgo, Mexico. Results The reliability analysis indicated that the IDN has adequate internal consistency. The exploratory and confirmatory factor analyses allowed us to identify a structure of three factors (pride, belonging, and meaning). The pride factor shows higher estimated loads. Conclusion The final version of the instrument presents adequate reliability and validity for the measurement of organizational identity.