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.
Results
Showing 1 to 20 of 42 for “"arrival rates"”.
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Fluorescence assay for polymerase arrival rates
… characterization strategies. The RNA polymerase arrival rate (PAR) is defined to be the rate that RNA polymerases arrive at a specified location on the DNA. Designing and characterizing biological modules in terms of RNA polymerase arrival rates provides for many advantages in the construction …
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Prediction of Airport Arrival Rates Using Data Mining Methods
… of weather input variables in predicting Airport Arrival Rates (AAR) using the FAA’s Aviation System Performance Metric (ASPM) database. The ASPM database contains airport performance statistics and limited weather variables archived at 15-minute and hourly intervals, and these data formed the …
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Queueing models for call centres
… i.e. multi-server systems with time-dependent arrival rates, general service time distribution and state-dependent abandonments on arrival (balking). The discrete-time modelling approach which has previously been used for modelling the time-dependent behaviour of multi-server queues is extended …
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Statistical methods for supporting urgent care delivery
… per day into a call centre, loess to predict arrival rates, and moving averages to deal with unexpected flu pandemics. We also tried to understand the behaviour of GPs and develop a fair rating system, based on their speed. Finally, we introduced some novel dissemination techniques so that the …
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Proactive Decision Support Tools for National Park and Non-Traditional Agencies in Solving Traffic-Related Problems
… entrance station, where queueing performance and arrival and probability mass functions of the vehicle arrival rates are determined. Chapter 3 focuses on the evaluation of a parking system within the Moose-Wilson Corridor in a popular attraction known as the Laurance S. Rockefeller Preserve, in …
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Improving access through stochastic modeling in Veterans Affairs Mental Health Services
… tool. To simulate wait times, users input arrival rates, service times, patience, probabilities of relapses and probabilities to go from one program to another. We determine that blocking is one of the main drivers of the delays. This model is not only useful for direct decision making, …
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Towards federated learning over large-scale streaming data
… insights in real-time. Due to fluctuating data arrival rates in real-world applications, modern DSPEs often provide auto-scaling. However, the existing designs of advanced analytical frameworks are not effectively aligned with scalable streaming computing environments. We have designed and …
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Staffing queueing systems with cyclical demand and unreliable servers
… realistic ones, considering cyclical customer arrival rates and multiple servers with uncertain availability. We identify the parameter settings under which the SIPP method is most compromised. We propose two modifications to the SIPP method to account for absence in staffing decisions. We …
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Heterogenous motorised traffic flow modelling using cellular automata
… other metrics explored. The relationship between arrival rates on the entrance roads and throughput for mixed traffic was studied and it was found that, as for the homogeneous case, critical arrival rates can be identified for various traffic conditions. Investigation of performance metrics for …
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Streaming Random Forests
… changes; and fast enough to accommodate high arrival rates. We consider the problem of data-stream classification, introducing an online and incremental stream-classification ensemble algorithm, Streaming Random Forests, an extension of the Random Forests algorithm by Breiman, which is a …
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Modelling and enhanced scheduling in the cellular vehicular sidelink standards
… effectively schedule variable packet inter arrival rates, variable packet sizes or facilitate congestion control techniques. This thesis will address these challenges by providing a rigorous analysis of the scheduling problems caused by these contemporary vehicular applications, emphasising …
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Risk-averse multi-armed bandits and game theory
… problem with no prior knowledge of the task arrival rates and processing rates of different task types on different servers. We propose the Blind GB-PANDAS algorithm that utilizes an exploration-exploitation scheme to load balance incoming tasks on servers in an online fashion. We prove that …
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Evaluating the Effect of Smart Parking Technology on Campus Parking System Efficiency using Discrete Event Simulation
… lot with 234 spaces. The data collected included arrival rates, departure rates, the geometric properties of the parking lot, preferred parking search strategies, and driving speeds. Arena 13.9, by Rockwell Automation, Inc, was selected as the modeling software. The base model was built from …
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Hybrid flow data center network architecture design and analysis
… mice traffic suffers as the size, fraction, and arrival rates of elephant flows increase. In the hybrid flow architecture, elephant flows are transmitted on an all-optical flow-switched data plane, where wavelength channels are reserved for the duration of a flow. In addition, the hybrid flow …
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Wireless Throughput and Energy Efficiency under QoS Constraints
… queueing constraints. In particular, Markovian arrival models including discrete-time Markov, Markov fluid, and Markov-modulated Poisson sources are considered, and maximum average arrival rates in the presence of statistical queueing constraints are characterized. Furthermore, energy efficiency …
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Simulation and optimization of outbound operations in an e-grocer's warehouse
… Statistical distributions were used for bags arrival rates and process cycle times. The design also leveraged material handling equipment and automation solutions for the shipment label application and bags sortation processes, reducing manual labor and distances walked by workers.
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A computer simulation model to predict airport capacity enhancements
… different aircraft mixes, and weights, arrival rates and patterns, etc. Currently it has a 30 aircraft data base to perform the simulation. Its output includes such global statistics as total arrival and departure delays, weighted average ROT and its standard deviation, aircraft exit …
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Management policies to handle multi queuing systems in a service oriented organization : a study of the Henri Bourassa driver licensing office in the City of Montreal
… effects of possible management actions. Customer arrival patterns during a three week period in January and July were compared using this model. Using a full-factorial design and given the statistical analysis, it was evident that a deterministic customer arrival rates produce significantly …
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An investigation into phenomena which influence the optimisation of ion plating systems
… to form solid coatings on negatively biased substrates. Although the method has gained commercial acceptance, particularly for engineering applications, much of the underlying science of the process is poorly understood. This work is concerned with investigating certain mechanisms occurring within …
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Deployment related mental health care seeking behaviors in the U.S. military and the use of telehealth to mitigate their impacts on access to care
… shows that service members seek care at higher rates in predictable intervals following their deployments. New patient arrival rates are projected for several installations by multiplying actual installation populations by newly calculated care seeking rates. These projections show deployment …
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