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 25 for “"controlling variables"”.
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Advanced Numerical Modelling of Bulk Superconductor Magnetisation
… as experimental data. Using these models, the controlling variables and properties of thermomagnetic instabilities are explored (such as the influence of bulk geometry and size, the critical current density distribution (see section 1.1.1), and the thermal properties). Methods for avoiding …
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Quantification of Effect of Solar Storms on TEC over U.S. sector Using Machine Learning
… techniques to identify the most important controlling variables. The weights inferred by the algorithm for each input variable show their importance to the resultant TEC change. The results of this work are compared to recent TEC studies to investigate the effects of large storms on the …
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Elazar's Political Culture: Is It Applicable Today?
… culture had any influence on the 23 dependent variables that he arranged under the three different measures. Then, he tested for partial correlation, using per capita personal income and the percentage of the population living in areas considered “urban” as controlling variables. Finally, he …
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The Effects of Presession Attention on the Acquisition of Tacts and Intraverbals
… across participants. An assessment of controlling variables confirmed that the newly acquired responses functioned as tacts or intraverbals, respectively. These outcomes suggest that antecedent manipulations traditionally reserved for mand training can positively affect the acquisition …
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Hydrogen storage of energy for small power supply systems
… model was carried out to identify the controlling variables. Numerous parameters were varied over realistic ranges. Important parameters were found to include wind resource, electrolyzer size, distance from electricity grid, price of diesel fuel, and electrolyzer and fuel cell cost. The …
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Controls on Dissolution Rate Variation at a Pair of Underflow-Overflow Springs at The Savoy Experimental Watershed
… This allowed for identification of the potential controlling variables of the dissolution rate at the two karst springs. Modeled dissolution rates for the two springs were strongly correlated with the temporal patterns of PCO2. PCO2 was a strong function of surface air temperature. The modeled …
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The effects of special preparation for the verbal section of the SAT
… coaching across schools; (2) the interaction of controlling variables such as sex, grade point average, final grade in junior English, and parental education levels; and (3) the difference in regressed gain scores of those students who volunteered for coaching programs and for those students who …
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High temperature SO2 chemisorption on model systems. Implications for in-plume processes.
… acids on ash surfaces, though the mechanisms and controlling variables remain poorly understood. A limited mechanistic understanding impedes estimation of volcanic volatile budgets and may also prevent assessment of environmental impacts resulting from volatile scavenging. Limited assessment of …
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Governance, Regulation and Performance of Non-listed Small Corporations in Australia: a Structural Equation Modelling Approach
… to confirm the hypothesized relationships, controlling variables such as firm age, size, and development stage. The results revealed (1) the measurement models for four latent constructs including corporate governance, government regulation, financial performance and CSR; (2) the impact of …
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The role of land-atmosphere and aerosol interactions on meso-scale convective weather systems across West Africa
… contribution towards better understanding of the controlling mechanisms for these interactions, in order to improve predictability of the highly frequent, high-impact meso-scale convective systems. It is very well known that aerosols alter the surface energy budget resulting into complex and …
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Classifying Single-thread Rivers: A European perspective
… corresponded to expected gradients in two controlling variables: stream power and bed sediment calibre. Thirdly, bar theory was applied to a sample of rivers representative of the six classes. Since bars are an important contributor to river channel form and dynamics, the correspondence of …
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Cottonwood Establishment in a Gravel-Bed River
… sites with and without successful propagation, controlling for elevation and surface texture. I examined seedling response to soil texture in the root zone, thickness of the coarse surface layer of clean gravel, and depth to water. I found no effects of the vertical distance to water. On the …
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Cottonwood Establishment in a Gravel-Bed River
… sites with and without successful propagation, controlling for elevation and surface texture. I examined seedling response to soil texture in the root zone, thickness of the coarse surface layer of clean gravel, and depth to water. I found no effects of the vertical distance to water. On the …
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Analytical design method for cold production of heavy oil with bottom water using Bilateral Sink Wells
… numerically. A new mathematical model identifies controlling variables and project design parameters, and describes the relationships among them. The design model is used to select rates of water and oil in BWS wells for best performance. The analytical model is verified by a comparison to …
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Teacher Participation in Decision Making and its Relationship to Job Satisfaction in Middle Schools in Riyadh, Saudi Arabia
… an important topic in the education field. Many variables impact teacher job satisfaction. This study examined teacher participation in decision-making and its relation to teacher job satisfaction in ten public middle schools in the north of Riyadh, Saudi Arabia. It also sought to determine the …
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Interfaces and Fluctuations in Diblock Copolymer Melts and Ternary Mixtures with Homopolymers
… theory that eliminates arbritrary choices in controlling variables needed to stabilize interfaces and presents a simplified description of these monolayers as a pseudo-one component system. We demon- strate the utility of our generalized theory by presenting an accurate thermody- namic …
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HYPORHEIC FLOW, RESIDENCE TIMES AND NITROGEN REACTIONS IN A RIFFLE-POOL SEQUENCE, TRUCKEE RIVER, NV.
… zone, physical and biogeochemical processes controlling nitrification and denitrification processes are directly linked. Thus, this dissertation investigates hyporheic flow, residence times, oxygen dynamics and nitrogen transformations of a riffle-pool sequence in the lower Truckee River. The …
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Integrated optimization of hybrid steam-solvent injection in post-CHOPS reservoirs with wormhole networks and foamy oil behaviour under uncertainty
… steam temperature, and steam quality as the controlling variables. A hybrid optimization technique based on the genetic algorithm (GA) is then integrated with the orthogonal array (OA) and Tabu search (TS) to maximize the objective function by rationalizing the injection and production …
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Spatial and temporal scales of the morphodynamic evolution within the Studland complex.
… thus illustrating the relationships between controlling variables, temporal and spatial beach form variability and the system's hierarchy. Profile variability revealed several distinct patterns of spatial and temporal change, enabling discrete sets of profiles to be grouped together to …
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The effect of board characteristics on firm financial performance of listed companies in Hong Kong
… Tobin’s Q, and Z-score by using six independent variables of board characteristics, the board size as moderating variable and firm size and company type as controlling variables, based on the financial data of 120 sample companies from 2015 to 2019. All data are extracted from the website of the …
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