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1	An Investigation of Friction Stir Welding Parameter Effects on Post Weld Mechanical Properties in 7075 AA Dickson, Steven B. 01 March 2015 (has links) (PDF) The effects of weld temperature, travel speed, and backing plate thermal diffusivity on themechanical properties of a weld have been studied. A face centered cubic experiment of designwas completed in which the response variables were yield strength, minimum hardness in the HAZ, and charpy impact toughness. Three models were created from the data gathered usinga stepwise regression in order to see the effects of each parameter. For the yield strength andminimum hardness it was found that only travel speed and backing plate thermal diffusivities werestatistically significant to the properties. The charpy impact toughness saw that all three parameterswere statistically significant to its value. In all three models the travel speed had the greatest affecton the material properties. friction stir weldiing 7075 aluminum parameter effects analysis yield strength minimum hardness charpy impact test Mechanical Engineering
2	Konfidenční množiny v nelineární regresi / Confidence regions in nonlinear regression Marcinko, Tomáš January 2013 (has links) The aim of this thesis is a comprehensive description of the properties of a nonlinear least squares estimator for a nonlinear regression model with normally distributed errors and thorough development of various methods for constructing confidence regions and confidence intervals for the parameters of the nonlinear model. Due to the fact that, unlike the case of linear models, there is no easy way to construct an exact confidence region for the parameters, most of these methods are only approximate. A short simulation study comparing observed coverage of various confidence regions and confidence intervals for models with different curvatures and sample sizes is also included. In case of negligible intrinsic curvature the use of likelihood-ratio confidence regions seems the most appropriate.
3	Impact of Processing Parameters on the Frying of Protein-based Foods Chatterjee, Usoshi January 2020 (has links) No description available. Engineering Food Science Livestock Systems Design Agricultural Engineering frying frying process meat process process engineering bacon bits pork product process food engineering quality attributes analytical chemistry moisture content prediction model oil temperature parameter effects

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