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 12 of 12 for “"Mathematical solutions"”.
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Mathematical solutions to problems in radiological protection involving air sampling and biokinetic modelling
Intakes of radionuclides are estimated with the personal air sampler (PAS) and by biological monitoring techniques: in the case of plutonium, there are problems with both methods. The statistical variation in activity collected when sampling radioactive aerosols with low number concentrations was …
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The application of the law of virtual work in the solution of civil engineering structures
… and further to give examples of their mathematical solutions.
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Analysis of interfacial forces on the physics of two-phase flow and hyperbolicity of the two-fluid model
… we will propose a combination of physical and mathematical solutions. The physical forces that we will focus on are two interfacial forces: the interfacial pressure and the virtual mass. We will quantify the minimum correction that is necessary to ensure hyperbolicity of the two-fluid model. We …
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A Handbook for Investigative Science Projects Including an Introduction to Statistical Analysis
… does not get involved in the complexities of the mathematical solutions for the statistical analysis of data; instead, it stresses the importance of understanding the concepts. It concentrates on the selection of appropriate statistical tests and their application using modern desktop computer …
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The elastic effect of spandrels and columns on the moments in slabs due to vertical loads
… with the comparison of results obtained from the mathematical and experimental solution of flat plates supported by beams and columns. The experimental solution is taken from a thesis by John W. Flemer,¹ also for the degree of Master of Science in Architectural Engineering at Virginia Polytechnic …
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Reinforcement Learning for Self-adapting Time Discretizations of Complex Systems
… to solve because direct analytical solutions are rare. Using the traditional Brusellator and Lorenz differential equations as test beds, this research develops models to determine reward functions and dynamically tunes controller parameters that minimize both the error and number of …
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Cluster kinetics modeling of glassforming materials
… between glassformer monomers and their clusters. Mathematical solutions of population balance equations for monomer and cluster lead to molar concentrations in terms of rate coefficients of the reaction-like mechanisms. These are then related to viscosity or dielectric relaxation time through free …
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Fundamental properties of Synthetic O-D Generation Formulations and Solutions
… Entropy techniques. As is the case with many mathematical solutions to engineering problems, a number of simplifying assumptions have been made in order to solve the synthetic O-D problem. Unfortunately, the descriptions of these simplifying assumptions are often not fully described in the …
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The influence of strain rate and the effect of friction on the forging load in simple upsetting and closed die forging.
… machine.</p> <p>Analytically two separate mathematical solutions have been developed: A numerical technique using a lumped-mass model for the analysis of simple upsetting and closed-die forging and, for extrusion forging, an analysis which equates the shear and compression energy …
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Impediments to Effective Safety Risk Assessment of Safety Critical Systems: An Insight into SRM Processes and Expert Aggregation
… problems in Expert Aggregation, behavioral and mathematical solutions have been explored and the implications of using these methods for Safety Risk Assessment have been discussed. Two standard documents that contain the Safety Risk Management Processes of the Federal Aviation Agency (FAA) and …
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Mathematical modeling of foot and mouth disease (FMD) in Cattle and Buffaloes using vaccination and culling: A Namibia perspective
… effects on agriculture and wildlife economies. Mathematical models have been used to analyse the transmission and control of FMD to enable better decision making for animal health policy makers. In this study, we developed and analysed a basic mathematical model of the dynamics of FMD with and …
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Advanced controllers for building energy management systems. Advanced controllers based on traditional mathematical methods (MIMO P+I, state-space, adaptive solutions with constraints) and intelligent solutions (fuzzy logic and genetic algorithms) are investigated for humidifying, ventilating and air-conditioning applications.
… output MIMO adaptive controllers, fuzzy logic solutions and genetic algorithm techniques. The control performances of the designs developed using the various methods based on aspects such as regulation errors squared, energy consumptions and the settling periods are investigated for different …