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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 231 for “"coefficient of variation"”.
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Some properties of the sample coefficient of variation
In this dissertation some properties of the sample coefficient of variation are investigated and the results are summarized below. The exact frequency function of the S.C.V., whose parent distribution is assumed to be normal, is derived. The probability of negative values of the S.C.V. is discussed …
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The development of skill : the coefficient of variation as an index of skill acquisition
… more stable reaction times (RTs). The goal of this study was to distinguish practice effects which are due to a speed-up (where reduced RTs and correspondingly reduced variability in RT indicate that the task is being performed faster but in the same way), from practice effects due to …
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Development of a Hollow-Cylinder Tensile Tester to Obtain Fundamental Mechanical Properties of Asphalt Paving Mixtures
… found to be both accurate and repeatable. The coefficient of variation was measured for the HCT and IDT tensile strength results. In general, the coefficient of variation of the HCT strengths was found to be lower than that of the IDT strengths, particularly for ultimate tensile strengths. The …
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Development of Process Control Framework Incorporating Deep Reinforcement Learning for Desktop Fiber Extrusion Device via PLC Implementation
… Learning. By improving the mechanical design of the desk-top fiber extrusion device and implementing PID controllers over the system on the Allen-Bradley PLC, the coefficient of variation in the fiber extrusion process is reduced to 0.1. A communication path is established based on open …
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Acceleration and fatigue in soccer
… one determined the validity and reliability of 5 and 10 Hz global positioning systems (GPS) for measuring instantaneous speed during the acceleration, deceleration and constant speed phase of straight-line running. The criterion measure used to assess GPS validity was instantaneous speed …
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Ultimate Strength of the Local Zone in Load Transfer Tests
… equation is presented for the prediction of the ultimate strength of the local zone in Load Transfer Tests. The derivation of this new formulation is the result of the investigation of the ultimate bearing strength of plain and reinforced concrete blocks, concentrically loaded. A total of …
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Discrimination between sincere and deceptive isometric grip response using Segmental Curve Analysis
… to explore the between trial variability of the measures of the isometric peak force, time to peak force, area to peak force, area under the curve, slope (20%-80%), and the average slope of subjects assigned to perform a series of four isometric grip strength contractions and to develop a …
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Historical review of financial equity in Missouri : 1993 foundation formula and amendments
… Formula and subsequent revisions on the equity of statewide educational funding. This research considered the revenue per student per penny of property tax levy, the revenue per student, and the legislative decision to guarantee a minimum (hold harmless) payment per student to analyze whether …
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Variation in labor efficiency and selected costs among Virginia meat packing firms
… analyzed by departments to obtain the interfirm variation in man-hours required and in the costs of labor and selected resources. In addition, four firms that were unable to supply departmental data supplied total plant labor records and selected other costs. These four firms were combined with …
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The urinary excretion of conjugated glucuronic acid in healthy male volunteers
The amount of urinary conjugated glucuronic acid excreted by a free-living male population and the effect of certain factors, i.e. vegetable, fruit, meat, and charbroiled food intake, tobacco, alcohol, caffeine, and marijuana use, exposure to chemicals and familial cancer incidence, were …
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HEADED STUD SHEAR CONNECTORS IN FULL-SIZE COMPOSITE BEAMS WITH WIDE RIBBED METAL DECK
This thesis summarizes the results of an experimental investigation of the behavior of headed stud shear connectors embedded in slabs with wide ribbed metal deck oriented parallel to the beam. The test program involved the testing of 60 push-out specimens and 4 full-size beam specimens. The main …
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Spatial variability of hydraulic properties as affected by physical properties of selected soil types in South Africa
… sites were selected for this study (University of Venda Experimental farm and Roodeplaat, Agricultural Research Council farm). The objectives of this study were to determine the spatial variability of soil water content, water infiltration and hydraulic conductivity on selected soils. Field …
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Expected Vibration Performance of Wood Floors As Affected by MSR vs. VSR Lumber E-Distribution
… study was done to investigate the effect of the coefficient of variation of the modulus of elasticity ((E) on the vibrational performance of joist floor systems. Eight floor cases were studied and two types of lumber were considered: MSR and VSR lumber where (E is 0.11 and 0.25, …
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A procedure to facilitate testing of a two-sided composite null hypothesis about the mean of a normally distributed random variable
A procedure was developed to aid in the testing of a two-sided composite null hypothesis about the mean of a normally distributed random variable for situations where either the population variance is known or unknown. The procedure was designed to eliminate the requirement for iterative type …
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Income Inequality Measures and Statistical Properties of Weighted Burr-type and Related Distributions
… This value is generally based on the quantile of the loss distribution. Explicit formulas of several tail conditional expectations and inequality measures for Dagum-type models are derived. In addition, a new class of weighted Burr-III (WBIII) distribution is presented. The statistical …
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Statistical Properties of Weighted Generalized Gamma Distribution
<p>A new class of weighted generalized gamma distribution and related distributions are presented. Theoretical properties of the generalized gamma model, weighted generalized gamma distribution including the hazard function, reverse hazard function, moments, coefficient of variation, coefficient of …
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Statistical analysis for streamflow prediction
… taken under investigation a statistical analysis of mean monthly flows was attempted. The relationship was established for all but one region. The analysis compared the coefficient of variation of the monthly flows to the size of the drainage area for each basin in a region. The regions were …
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Reliability of Tibial Measurement with Mechanical Response Tissue Analysis
… analysis (MRTA) provides a noninvasive means of estimating the cross-sectional bending stiffness (EI) of long bones, and thus can serve as a predictor of bone strength. Estimates of bone bending stiffness are derived from the point impedance response of a long bone to low frequency (70-500Hz) …
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Variability in the Firing of Nerve Impulses in Eccentric Cells of the Limulus Eye
… is concerned with the source and characteristics of variability in the discharge of impulses by neurons. The neuron in which variability was studied is the eccentric cell in the compound eye of the horseshoe crab, Limulus polyphemus. In Part I a theory is presented which accounts for the …
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An Evaluation of Medicaid Programs Using Medication Use-Related Quality Measures
Objective: To assess quality of care provided to Medicaid beneficiaries using medication use-related quality indicators. Methods: This study is a retrospective analysis of 2006 & 2007 Medicaid administrative claims data from 45 states and DC. Eleven medication use-related measures …
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