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 45 for “"Queuing Theory"”.
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Queuing Theory in Theme Parks
<p>The goal of this project is to find the most efficient way for theme parks to process their guests. There currently exist many types of lines such as standby lines, single rider lines, and fastpass or skip the line queues. We will simulate a single rides queue. This will be a popular roller …
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Applications of Queuing Theory for Open-Pit Truck/Shovel Haulage Systems
… of fleet selection involves the application of queuing theory to the haul cycle. Queuing theory was developed to model systems that provide service for randomly arising demands and predict the behavior of such systems. A queuing system is one in which customers arrive for service, wait for …
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Enhancing the customer service experience in call centers using preemptive solutions and queuing theory
… the team calculated the key inputs for the queuing model including average wait time, interarrival rates and number of servers. The team then chose and developed the M/M/n stochastic queuing model for the simulation. The M/M/n queue reflects a simple system with parallel servers, arrivals …
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Simultaneous Lot sizing and Lead-time Setting (SLLS)Via Queuing Theory and Heuristic search
… system model, which is based on open queuing network theory. Then, it optimizes lot size by using realistic estimates of WIP and the lead-time of different lots simultaneously for single-product, single-level bills of material. Experiments are conducted to compare the performance of …
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Performance Analysis and Modelling of Spectrum Handoff Schemes in Cognitive Radio Networks. Modelling and Analysis of Spectrum Handoff Decision Schemes in Cognitive Radio Networks using the Queuing Theory and Simulation for Licensed and Unlicensed Spectrum Bands.
… proactive spectrum handoff schemes are proposed. Queuing theory or/and simulation experiments have been used to evaluate the performance of the proposed schemes and compare them with other existing schemes. Handoff delay has mainly been used to investigate the impact of successive handoff …
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Modelling the cost-effectiveness of strategies to treat end-stage heart failure using discrete event simulation
… list for elective surgery. Not incorporating queuing theory into HTA is likely to be an issue if the consequences of delayed treatment significantly affect a patient’s morbidity and mortality. A case-study in end-stage heart failure is utilised to explore the restrictions faced by patients as …
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Pulling a job shop into supply chain management
… The author developed optimization techniques, queuing theory models, and simulation tools to guide the improvement efforts. The project team achieved a thirty-percent reduction in grip inventory in six months by consolidating redundant supply chains, changing from a make-to-stock to a …
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Freeway Travel Time Estimation Based on Spot Speed Measurements
… estimating roadway travel times is to use either queuing theory or shockwave analysis procedures. However, a number of studies have claimed that deterministic queuing theory and shock-wave analysis are fundamentally different, producing different delay estimates for solving bottleneck problems. …
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Analysis and modeling of airport surface operations
… upon the accuracy of previous models based on queuing theory and regression. Finally, a regression model for estimation of aircraft taxi-out fuel burn is described. Together, the modules described here form the basis for a surface operations optimization tool that is currently under development.
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Study of truck allocation and truck dispatching problems in open pit mines
… are used mainly for decision making purposes. Queuing theory techniques, also analyzed, are used mainly for evaluation purposes.
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Opportunities for System Dynamics Research in Operations Management for Public Policy
… such as mathematical programming, and queuing theory often cannot fully address these problems. In this work, we create a roadmap for researchers—both those who are familiar with systems dynamics and those who are not—for the expanded use of system dynamics studying public …
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Incident-Related Travel Time Estimation Using a Cellular Automata Model
… approaches, which were shock wave analysis, queuing theory and cellular automata models, were initially considered, however, the first two macroscopic models were indicated to underestimate travel time by previous literature. A microscopic simulation model based on cellular automata was …
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Optimization on the number of open security lanes at Keflavik International Airport
… solved before with different approaches, e.g. queuing theory and simulation, where the main focus is on the security process. An optimization model is presented in this work to decide the number of open security lanes to fit the service level goal Isavia has set to follow. The model is tested …
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Electrification of transportation sharing economy business models: the ride- and carsharing cases
… to analyze the aforementioned models through queuing theory. It characterizes viable control strategies for the platforms to co-optimize their revenues from both transportation and grid services. It develops profit maximization algorithms of the PEV fleet managers providing such services. …
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Performance modeling and control of web servers
… the Apache web server basedon a combination of queuing theory andcon trol theory. The admission control mechanism is tested in the laboratory, implemented as a stand-alone application in front of the web server. The third paper continues the work from the secondp aper by discussing stability. …
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A combined classification and queuing system optimization approach for enhanced battery system maintainability
… and prediction of future performance. Queuing theory has been used to optimize battery charging resources ensure service and minimize cost. However, these approaches do not focus on pre-acceptance reliability improvements or platform operational requirements. This research introduces a …
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Designing internal logistics processes for new manufacturing site
… logistics processes by employing the concepts of queuing theory and Little's Law. Using this methodology, a process model was developed and validated by discrete event simulation to provide process planners with an understanding of the relationship and importance of numerous parameters. This …
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Markov Modeling of Third Generation Wireless Channels
… artificial intelligence, wavelets and queuing theory. Wideband Code Division Multiple Access (W-CDMA) wireless communication parameters including channels fading statistics, Bit Error Rate (BER) performance and interval distribution of errors are modeled using different Markov models, …
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Massively Parallel Hidden Markov Models for Wireless Applications
… recognition, artificial intelligence, queuing theory, and are used to model fading in communication channels. The research presented in this thesis proposes a new approach to spectrum identification using a parallel implementation of Hidden Markov Models. Algorithms involving HMMs are …
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Iterative Decoding and Channel Estimation over Hidden Markov Fading Channels
… pattern recognition, artificial intelligence, queuing theory, and communications theory. However, recent years have witnessed a renaissance in the application of HMMs to the analysis and simulation of digital communication systems. Typical applications have included signal estimation, frequency …
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