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Smooth Flexible Models Of Nonhomogeneous Poisson Processes Fit To One Or More Process Realizations, Shalaka C. Deo
Smooth Flexible Models Of Nonhomogeneous Poisson Processes Fit To One Or More Process Realizations, Shalaka C. Deo
Theses
Simulation is a technique of creating representations or models of real world systems or processes and conducting experiments to predict behavior of actual systems. Input modeling is a critical aspect of simulation modeling. Stochastic input models are used to model various aspects of the system under uncertainty including process times and interarrival times. This research focuses on input models for nonstationary arrival processes that can be represented as nonhomogeneous Poisson processes (NHPPs). In particular, a smooth flexible model for the mean-value function (or integrated rate function) of a general NHPP is estimated. To represent the mean-value function, the method utilizes …
A Graph-Based Factor Screening Method For Synchronous Data Flow Simulation Models, Gregory Tauer
A Graph-Based Factor Screening Method For Synchronous Data Flow Simulation Models, Gregory Tauer
Theses
This thesis develops a method for identifying important input factors in large system dynamics models from an analysis based on those models' underlying structures. The identification of important input factors is commonly called factor screening and is a key step in the analysis of simulation models with many input parameters. Models under investigation are system dynamics models implemented as synchronous data flow programs, a model of computation that requires encoding the model components' dependencies in a graph format. The developed method views this graph as a stochastic process and attempts to rank the importance of inputs, or source nodes, with …
Project Management: A Simulation-Based Optimization Method For Dynamic Time-Cost Tradeoff Decisions, Radhamés A. Tolentino Pena
Project Management: A Simulation-Based Optimization Method For Dynamic Time-Cost Tradeoff Decisions, Radhamés A. Tolentino Pena
Theses
Project managers face difficult decisions with regard to completing projects on time and within the project budget. A successful project manager not only needs to assure that the project is completed, but also desires to make optimal use of resources and maximize the profitability of the project. The goal of this research is to address the time-cost tradeoff problem associated with selecting from among project activity alternatives under uncertainty. Specifically, activities that make up a project may have several alternatives each with an associated cost and stochastic duration. The final project cost is a result of the time and cost …