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 20 of 532 for “"Correlation coefficients"”.
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Correlation of Environmental Temperature, Precipitation, and Humidity with Salmonella Culture Results from Cattle in Virginia
… diagnosis of salmonellosis in cattle. Spearman's correlation coefficients were calculated for the correlations between the monthly number of samples positive for salmonella culture and weather parameters: temperature, precipitation, and relative humidity. Significant correlation coefficients …
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Differences Between the High School Grade Point Average and the SAT Mathematics Score in Predicting Success in the Three-Quarter Mathematics Sequence at a Post-secondary Vocational Education Institution
… the two-year program: The Pearson Product-Moment Correlation was used to compute two correlation coefficients; one between the high school GPA and the mathematics sequence average, and the other between the SAT mathematics score and the mathematics sequence average. These correlation coefficients …
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Comparison of Artificial Flavors in Commercial Products and Actual Natural Flavor via Gas Chromatography Mass Spectroscopy Data.
… scatter plot designs, Mann-Whitney U Test, and correlation coefficients. The artificially flavored commercial products tend to have simpler chromatograms. The Burger King® milkshake, Gatorade®, and Hi-C® are the most similar to that of the natural strawberry flavor. Their correlation …
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Using two-dimensional impedance maps to study acoustic properties of tissue microstructure
… properties of isotropic media to estimate the correlation coefficient from slices before estimating the 3D volume power spectrum. Simulations were used to verify that 2DZMs could be used to estimate correlation coefficients and 3D power spectra having low error. The studied media had known …
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Technical and logistical support for course assessment
… and performed calculations such as finding correlation coefficients to determine what areas of the course might need improvement. After analyzing four semesters of 6.042, it was discovered that the correlation coefficients were not as high as expected. However, the results are still useful …
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Comparisons of serum lipid levels and dietary lipid intakes of parents and children
… knowledge were completed by the participants. Correlation coefficients between serum total cholesterol and dietary cholesterol intakes of the fathers were 0.66 (p = 0.01) in all 14 families and 0.64 (p = 0.05) in the 11 families in which at least one parent had a family history of CHD. The …
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Effect of anthropometric factors on the reproducibility of Doppler echocardiographic measurements during stationary bicycle exercise in healthy males
… at the .05 alpha level. Pearson's Product Moment correlational analyses revealed that across all subjects the highest test-retest reliability occurred during the moderate intensity of exercise. The average test-retest correlation coefficients for the high and low groups within each index are as …
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ΓΕΝΕΤΙΚΟΙ ΠΑΡΑΜΕΤΡΟΙ ΤΟΥ ΒΑΘΜΟΥ ΑΛΚΑΛΙΚΟΤΗΤΑΣ ΤΗΣ ΥΔΑΤΟΔΙΑΛΥΤΗΣ ΤΕΦΡΑΣ ΣΤΑ ΕΛΛΗΝΙΚΑ ΚΑΠΝΑ (N. TABACUM L.)
… K%, AND COMBUSTIBILITY) WERE ALSO ESTIMATED AND CORRELATION COEFFICIENTS WERE OBTAINED. ADDITIVE TYPE OF GENETIC EFFECTS DETERMINED THE INHERITANCE OF ALK. NO. OF WSA IN THE BURLEY ENVIRONMENT, WHEREAS ADDITIVE PLUS DOMINANT AND EPISTATIC EFFECTS IN THE ORIENTAL. RELATED CHARACTERISTICS FOLLOWED …
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Reactions and Learning as Predictors of Job Performance in a United States Air Force Technical Training Program
… level evaluation model. The study assessed the correlation between and among three levels of data that resulted from evaluation processes used in the U.S. Air Force technical training. The three levels of evaluation included trainee reaction (Level 1), test scores (Level 2), and job performance …
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Effects of Site Response on the Correlation Structure of Ground Motion Residuals
… as epsilon (𝜖). For spectral accelerations, the correlation structure of normalized residuals across oscillator periods is important for guiding ground motion selection. Correlation structures for large global datasets have been studied extensively. These correlation structures reflect effects …
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Using dimensional analysis in building statistical response models
… respective residual sum of squares and multiple correlation coefficients compared. The results were similar in both cases. The correlation coefficients of the quadratic model were higher than those of the dimensional analysis model and the residual sum of squares were lower for the quadratic than …
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Evidence of Hydro-Seismicity in the Tennessee Seismic Zone
… well and rainfall data were examined for correlation with earthquake occurrence rates. High Pearson correlation and anti-correlation coefficients (.7-.9) were obtained for the reservoir level and dam discharge volume rates vs monthly earthquake counts. Pearson correlation coefficients for …
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Effective multiple mixing in Weyl chamber actions
… we prove effective decay of certain multiple correlation coefficients for Weyl chamber actions of semidirect products of semisimple groups with $G$-vector spaces. Using these estimates we get decay for corresponding actions in some semisimple groups of higher rank and homogeneous spaces of …
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Petrography, Diagenesis and Depositional Models of the St. Louis Limestone, Valmeyeran (Middle Mississippian), Illinois Basin, u.s.a. (United States)
… (lateral and vertical) relationships and correlation coefficients of the microfacies permitted construction of three depositional models.
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Power, load, and margin : relationships between professional development and margin in life among student affairs professionals at Ball State University
… Load Margin (PLM) theory, this study employed a correlational research design to investigate if relationships existed between involvement in career-related professional development outlets and activities, and Margin in Life (MIL) scores for full-time student affairs professionals at Ball State …
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Methods of estimating repeatability and most probable producing ability in beef cattle
… were first obtained for each herd by intraclass correlation. These values were 0.34, 0.00, 0.35 and 0.14. The individual herd sums of squares and degrees of freedom were then pooled to obtain an overall estimate of 0.31. Repeatability was also calculated by the correlation of adjacent records (r …
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Beverage Vending Purchasing Patterns and Attitudes in Southwest Virginia High School Students
… reliability was assessed with intra-class correlation coefficients. Results: Pearson correlation coefficients for reliability between test and re-test displayed a range from r =0.53 to r =0.73. There were no significant differences in demographics (gender and ethnicity) between time …
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Comparisons of correlation methods in risk analysis
This thesis presents a comparison of correlation methods in risk analysis. A theoretical solution is given to the correlation problem along with a discussion of each method. Each method is compared to a developed test case and two other cost projects. Restrictions on correlation coefficients are …
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Factors related to the adoption of the consumer and homemaking curriculum by home economics teachers in Virginia secondary schools
… statistically by factor analysis, canonical correlations, bivariate correlation coefficients, tabulation and cross tabulations, and Pearson's correlation coefficients were computed to test the null hypotheses. Factor analysis of the responses resulted in the identification of three factors …
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Ultravioletinės srities šviesos diodų žemadažnio triukšmo tyrimas /
… of UV LEDs, evaluate simultaneous cross-correlation coefficient between electrical and optical fluctuations and apply correlation method for InGaN-based LEDs. Two AlGaN-based LEDs (275 nm) and two InGaN-based LEDs (370 and 385 nm) were investigated. All investigated LEDs exhibited 1/f^α …
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