Abstract:Simulation is introduced in terms of its different forms and uses, but the focus on discrete event modeling for systems analysis is dominant as it has been during the evolution of the technique within operations research and the management sciences. This evolutionary trace of over almost fifty years notes the importance of bidirectional influences with computer science, probability and statistics, and mathematics. No area within the scope of operations research and the management sciences has been affected mor… Show more
“…Tocher for the United Steel Corporation in the late 1950s. Useful histories of the development of DES can be found in Nance and Sargent (2002), Robinson (2005) and Hollocks (2006,2008). Here we will focus on the definition of and assumptions behind DES, and discuss its applications in healthcare.…”
Discrete-event simulation (DES) and lean are approaches that have a similar motivation: improvement of processes and service delivery. Both are being used to help improve the delivery of healthcare, but rarely are they used together. This paper explores from a theoretical and an empirical perspective the potential complementary roles of DES and lean in healthcare. The aim is to increase the impact of both approaches in the improvement of healthcare systems. Out of this exploration, the 'SimLean' approach is developed in which three roles for DES with lean are identified: education, facilitation and evaluation. These roles are demonstrated through three examples of DES in action with lean. The work demonstrates how the fusion of DES with lean can improve both stakeholder engagement with DES and the impact of lean.
“…Tocher for the United Steel Corporation in the late 1950s. Useful histories of the development of DES can be found in Nance and Sargent (2002), Robinson (2005) and Hollocks (2006,2008). Here we will focus on the definition of and assumptions behind DES, and discuss its applications in healthcare.…”
Discrete-event simulation (DES) and lean are approaches that have a similar motivation: improvement of processes and service delivery. Both are being used to help improve the delivery of healthcare, but rarely are they used together. This paper explores from a theoretical and an empirical perspective the potential complementary roles of DES and lean in healthcare. The aim is to increase the impact of both approaches in the improvement of healthcare systems. Out of this exploration, the 'SimLean' approach is developed in which three roles for DES with lean are identified: education, facilitation and evaluation. These roles are demonstrated through three examples of DES in action with lean. The work demonstrates how the fusion of DES with lean can improve both stakeholder engagement with DES and the impact of lean.
“…The simulation of manufacturing systems using computers has existed as a management decision support tool since the 1960's thanks to the advent of high level computer programming languages (Goldsman et al 2009;Nance & Sargent 2002). The discipline of simulation modelling has grown with the advance of modern computer systems and the development of Visual Interactive Simulation (VIS), such that its implementation can be found in numerous areas of operations management from manufacturing engineering to supply chain management (Bell & O'Keefe 1986;Jahangirian et al 2010).…”
A fundamental problem in the management of energy usage is the inability to clearly predict any possible energy saving opportunities. The cost of both under or overestimating potential returns on investment can be prohibitive to a decision maker. In recent years the simulation of energy usage using existing manufacturing simulation tools has increased in popularity among researchers, but it is decision makers who need to see the benefits of this discipline. This paper proposes an interactive manufacturing energy management toolkit which makes use of existing productivity simulation models for the prediction of energy usage. An interactive Microsoft ® Excel ® based toolkit is developed to control Lanner's WITNESS ® discrete-event simulation software using Microsoft ® Visual Basic ® for Applications. The toolkit has the ability to predict potential areas where energy saving opportunities can be made within a complex manufacturing line, and is accessible from management presentations and proposals. The interactivity of the toolkit provides an environment which facilitates efficient hypothesis testing. The paper includes an industrial case study where the approach was used to quantify theoretical savings from certain energy usage reduction scenarios within a complex automotive engine manufacturing line.
“…Los avances esenciales se pueden resumir en los siguientes puntos (Nance y Sargent 2002;Jain 1999): La utilización cada día mas extendida de los ordenadores personales en la simulación y la integración tecnológica con herramientas típicas para aplicaciones tipo «desktop» (Windows, bases de datos, hojas de calculo electrónico, Visual Basic for Applications -VBA, gráfica de los sistemas de proyección asistida por el ordenador-CAD). El pionero en esta tendencia es el lenguaje SIMAN (incluido actualmente en el instrumento de simulación ARENA, producto de la empresa Rockwel Software); La utilización de los efectos visuales, incluidos los de animación y de simulación interactiva visual (Visual Interactive Modeling -VIM, Visual Interactive Simulation -VIS); La integración de unos complementos integrados (add-ins) con capacidades avanzadas de optimización junto con aquéllas de simulación.…”
Section: La Simulación Como Una Alternativa Más Viable a Los Modelos unclassified
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