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This paper analyzes the production cycle of a Colombian flower producing company, focusing on the sowing and cutting processes. These processes are characterized by the presence of delays that imply large losses of money for the company. To facilitate the decision-making process and analyze alternatives to increase the company's profit, a discrete-event simulation model was built where three scenarios were evaluated: 1) a scenario of forced acceleration of flowering, 2) a scenario of sale of flowers that are considered waste, and 3) a scenario that combines the forced acceleration of flowering and eliminates a line of work. The results indicate that under a scenario of forced acceleration of flowering together with the elimination of a work line, greater profitability could be achieved for the company and counteract the economic losses caused by the delays present in the production process, due to the saving in human resources and at the same time achieving an increase in the production of flowers. [ABSTRACT FROM AUTHOR]

Copyright of Dyna is the property of Universidad Nacional de Colombia, Medellin, Facultad de Minas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ingeniería y Competitividad is the property of Universidad del Valle and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper presents a literature survey of the current state of the art in vehicle relocation problems applied to EMS. Specially, we focus on describing a classification of this kind of problems, main components that should be taken into account for modeling them, key methods used for solving these problems, objectives pursued by the researchers, key performance measures considered in the EMS literature, software used in the development of models, data collection and verification and validation of the models. We also present some of the relocation policies that have been most frequently evaluated and implemented. [ABSTRACT FROM AUTHOR]

In a highly dynamic world, due to technological, economic, political and social changes in the environment, it has been recognized that the production systems play a critical role in the competitiveness of an organization. In this research the authors propose the integration of lean thinking in managing a production system using the technique of discrete event simulation using Petri nets as the support methodology in the process of decision making. Decision making in a lean production system is a complex process because it has static (structural) and dynamic (operational) characteristics and a set of waste presented in it. This paper presents the design of a set of structures that represent different stages in a production process of tires and that is it possible to prove that the design of a model, using the methodology of Petri nets, helps to have an effective and efficient decision making for waste disposal, this thanks to the properties of such nets to model discrete events and analyse the dynamic behaviour of the system. Finally the simulation allows analysing a set of parameters through a systemic indicator OEE (Overall Equipment Efficiency) and demonstrate that the implementation of methods, techniques and tools proposed in the lean production theory generate synergy in the system. [ABSTRACT FROM AUTHOR]

This paper uses the technique of discrete event simulation as methodology for decision support in a complex problem with multiple variables; the objective is to model the logistics operations involved in the maritime exportation of commodities in the presentations of bulk and bags from twelve producers until the seaport. The simulation allows analyzing the sensitivity of the key parameters and system variables in order to define different models of planning offices. Results showed that it is possible to reduce the inventory and maintenance costs, as well as improving the service performance indicators and consequently increasing the resources utilization rate. [ABSTRACT FROM AUTHOR]

Copyright of DYNA - Ingeniería e Industria is the property of Publicaciones Dyna SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of DYNA - Ingeniería e Industria is the property of Publicaciones Dyna SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this paper we describe the application of discrete event simulation for analyzing queues in a school restaurant. From these results we determine quantitative requirements for restaurant design including the randomness of each process and their interaction. Furthermore the use of graphic tools allowed a fruitful interaction with the team in charge of the architectural design. We show the model construction process, the diverse scenarios analyzed, and the selected configuration, which shows strong advantages against the current design. [ABSTRACT FROM AUTHOR]