Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 220 for “"Discrete Event Simulation"”.
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Improved Time Representation in Discrete-Event Simulation
Discrete-Event Simulation (DES) is a technique in which the simulation engine plays a history following a chronology of events. The technique is called ”discrete-event” because the processing of each event of the chronology takes place at discrete points of a continuous time-line. In computer …
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Improved Techniques for Parallel Discrete Event Simulation
… describe how a modeler can create SAN models of discrete event systems, partition and map a model to a target architecture, simulate using a number of PDES algorithms, and obtain performance data for the PDES algorithms used.
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Complex system analysis through discrete event simulation
… group at Amazon has recently invested in Discrete Event Simulation technology. This thesis focuses on the creation of a discrete event simulation of the Fernley, NV semi-automated distribution center's outbound flow process. More specifically, the business subjects investigated include: …
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Conceptual frameworks for discrete event simulation modeling
This thesis examines those aspects of simulation with digital computers which concern the use of conceptual frameworks (CFs) for the design and implementation of a model. A literature review of CFs which are in common use is conducted. These CFs are applied to a complex modeling problem, a traffic …
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Evaluation of alternative discrete-event simulation experimental methods
… non-experts produce meaningful, non-terminating discrete event simulations studies. The exemplar used was manufacturing applications, in particular sequential production lines. The thesis addressed the selection of methods for introducing randomness, setting the length of individual simulation …
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Pose: Scalable General-Purpose Parallel Discrete Event Simulation
… examine the overhead required for synchronizing events to obtain correct results in parallel and develop a new approach to the structure of model entities and mechanisms for PDES that help to reduce that overhead. Secondly, we design new adaptive synchronization strategies that exploit this new …
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Improving ICU patient flow through discrete-event simulation
… and emergency care. 90% of SICU patients are eventually transferred to another unit in the hospital. Frequent and sometimes lengthy non-clinical delays in this transfer process can be primarily attributed to congestion in downstream units. Multivariable regression analysis demonstrates that …
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Equipment protective capacity optimization using discrete event simulation
… between tool sets caused by WIP flow. This prevents static models from predicting the values and variabilities of factory outputs and throughput times (TPT) with sufficient accuracy to optimize the business. Discrete event simulations have the inherent advantage of modeling factory dynamics. …
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Model specification and analysis for discrete event simulation
… efficiency in the development and utilization of simulation models requires the assistance of a Model Management System to automate much of the process. This work develops one aspect of such system: tools fundamental to the specification and analysis of discrete event models. A model specification …
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Optimizing High Volume Traffic Surges using Discrete Event Simulation
… research study is to determine the fidelity of a discrete event simulation tool called the Evacuation Simulation Prediction Tool (ESP) in predicting transit times during a high volume surge in traffic flow. The ESP tool was developed for the purpose of predicting and optimizing large-scale …
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Enhancing Understanding of Discrete Event Simulation Models Through Analysis
<p>Simulation is used increasingly throughout research, development, and planning for many purposes. While model output is often the primary interest, insights gained through the simulation process can also be valuable. Insights can come from building and validating the model as well as analyzing …
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Analysis of offshore transportation logistics by discrete-event simulation
Logistics plays a fundamental role in the petroleum and oil industry, since large distances between offshore units and its onshore supply base demand an efficient supply chain. In this scenario, oil companies use huge infrastructure to service, maintain and develop operations of offshore units, …
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Adaptive techniques for scalable optimistic parallel discrete event simulation
Discrete Event Simulation (DES) can be an important tool across various domains such as Engineering, Military, Biology, High Performance Computing, and many others. Interacting systems in these domains can be simulated with a high degree of fidelity and accuracy. Furthermore, DES simulations do not …
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Gulf Regional Airspace Strategic Initiative Modeling Using Discrete Event Simulation
… Regional Airspace Strategic Initiative ExtendSim discrete event model was developed, aiming to expand on the capabilities of existing modeling tools used for GRASI by creating higher fidelity estimates on transit times along airspace paths, and by introducing airport models. Creating additional …
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Discrete event simulation based study of a PLM software network
… network has been developed in this study. Discrete event simulation (DES) has been used to represent this flow of data and queuing models have been used to represent the hardware components of the network. The aim of the study has been to accurately represent the true behavior of the …
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Systems analysis and optimization through discrete event simulation at Amazon.com
… effect on throughput. This thesis uses discrete event simulation and the program SIMUL8 to model the overall system and analyze the effect of this variation. It discusses the design and development process for the model, proposes key questions relative to variation, analyzes different …
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Amazon UK transshipment stow process analysis through discrete event simulation
… stow process was envisioned and modeled using discrete event simulation in order to determine cycle time savings versus volume efficiency tradeoffs. While the proposed transshipment tote stow process simulation was able to reduce transshipment cycle time by more than 80%, the tote stow process …
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Discrete Event Simulation of Mobility and Spatio-Temporal Spectrum Demand
… require realistic traffic modeling. We propose a Discrete Event Simulation framework, Diamond - (Discrete Event Simulation of Mobility and Spatio-Temporal Spectrum Demand) to model and analyze realistic activity based mobility and spectrum demand patterns. The framework can be used for …
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