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Advancing Poultry Nutrition Through Statistical Strategies To Reduce Experimental Variation And Novel Protease Enzyme Research, Caleb Morgan Marshall
Advancing Poultry Nutrition Through Statistical Strategies To Reduce Experimental Variation And Novel Protease Enzyme Research, Caleb Morgan Marshall
Theses and Dissertations
Increasingly, nutritionists are challenged to optimize broiler genetic capacity, while considering varying ingredient qualities and pricing, to meet production goals and profitability. Due to scale and cost, university and private research is often used by nutritionists to help make these decisions; thus, requiring these facilities to detect small, incremental improvements. In Chapters 1 and 2, processing data from several nutrition research trials were utilized to evaluate the impact of processing personnel, sample size, and unit of analysis on the detection of dietary differences. By accounting for potential variability between personnel (as a covariant) and selecting an adequate sample size for …
Compressive Strength Variation Due To Cement Source Change, Jared Lee Brown
Compressive Strength Variation Due To Cement Source Change, Jared Lee Brown
Theses and Dissertations
Cementitious materials obtained from different sources, while evaluated and classified by the same methods and criteria, often produce concrete with compressive strength variance despite other inputs remaining constant. The focus of this thesis was to enumerate and illustrate the possible compressive strength variation when cementitious material sources are interchanged, and investigate the influence that aggregate can have on this variation. This was accomplished by compiling and analyzing compressive strength data from previous research initiatives, and concluded that coefficient of variation (COV) and range values at the 14-, 28-, and 56-day timeframes due to a cement source change varied between 15.3% …
Minimization Of Noise And Vibration Related To Driveline Imbalance Using Robust Design Processes, Omar Al-Shubailat
Minimization Of Noise And Vibration Related To Driveline Imbalance Using Robust Design Processes, Omar Al-Shubailat
Theses and Dissertations
Variation in vehicle noise, vibration and harshness (NVH) response can be caused by variability in design (e.g. tolerance), material, manufacturing, or other sources of variation. Such variation in the vehicle response causes a higher percentage of produced vehicles to have higher levels (out of specifications) of NVH leading to higher number of warranty claims and loss of customer satisfaction, which are proven costly. Measures must be taken to ensure less warranty claims and higher levels of customer satisfactions. As a result, original equipment manufacturers (OEMs) have implemented design for variation in the design process to secure an acceptable (or within …