Browsing Electronic Theses, Dissertations, and Records of Study (2002– ) by Title
Now showing items 23129-23148 of 24264
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(2009-05-15)The objective of this research is to assess the performance of two popularReynolds-averaged Navier-Stokes (RANS) models, standard k-E and k-w, andto suggest modifications to improve model predictions for high-speed flows. ...
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(2017-12-11)Matrix acidizing treatments are commonly used to improve the productivity of oil and gas wells in carbonate reservoirs. For a given volume of acid injection, the optimal injection rate can achieve the deepest wormhole ...
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Two-Phase Operational Performance of a Terry GS-2 Steam Turbine Using Air & Water as Working Fluids (2020-01-09)This project investigates the performance of a Terry GS-2 turbine, and the attached trip-throttle valve and governor valve under two-phase (air/water) flow conditions. Because of their robust design, Terry turbines are ...
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(2023-08-01)This Thesis describes the use of (NaYF4:Yb,Er) microparticles suspended in water and ethanol to convert 980 nm infrared light into 540 nm visible light through a nonlinear stepwise two-photon process. The potential for ...
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(Texas A&M University, 2004-09-30)Two-port polarization independent electro-optically wavelength tunable filters based on asymmetric Mach-Zehnder structure in LiNbO3 substrate have been developed for 1.55μm application. The operation principle is based on ...
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(2014-06-12)This document contains three sections. The first two present new methods for two-sample testing where there are many variables of interest and the third presents a new methodology for time series bootstrapping. In the ...
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(2009-05-15)A two -stage circumferential slot virtual impactor aerosol concentrator system has been developed that is designed for nominal operational conditions of a 2 μm AD cutpoint, an aerosol inflow to the first stage of 100 L/min ...
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(2010-07-14)The Circumferential Slot Virtual Impactor (CSVI) and The XMX/2A are two virtual impactors designed for sampling aerosol particles from a dilute environment by separating the aerosol into a fine and a coarse particle fraction. ...
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(2009-06-02)Slot virtual impactors provide an efficient low power method of concentrating aerosols. A circumferential slot virtual impactor (CSVI) is especially effective because it has a continuous slot, and, therefore, has no losses ...
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(2011-02-22)Internal combustion engines have dealt with increasingly restricted emissions requirements. After-treatment devices are successful in bringing emissions into compliance, but in-cylinder combustion control can reduce their ...
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(2018-03-09)Bayesian statistical methods are known for their flexibility in modeling. This flexibility is possible because parameters can often be estimated via Markov chain Monte Carlo methods. In large datasets or models with many ...
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A Two-Study Examination Of Student Engagement And Its Relation To Adolescent Reading Comprehension (2015-05-01)The purpose of this research—which was divided into two parts—was to evaluate the extent to which adolescent reading comprehension research has addressed student engagement and examine the relationship between engagement, ...
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(2012-10-19)This research consisted of two studies. The purpose of the first study was to examine the presence and quality of fidelity of implementation as reported in recent early reading intervention research. A comprehensive search ...
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(2009-05-15)Among the multiple dimensions of reading, vocabulary knowledge and strategies are essential to skilled reading. As a result, this two-part dissertation (a) systematically examines the vocabulary intervention research, in ...
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(2016-12-09)This two-study examination was designed to explore aspects of the home literacy environment (HLE) in relation to young English Language Learners’ (ELLs) Spanish literacy development and to critically examine the approaches ...
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(2016-08-08)Students in Sub-Sahara Africa face a deluge of academic challenges that hinder literacy development. Post-colonization remnants in Zambia are evident in its educational system that, until recent changes in educational ...
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(2009-06-02)This thesis describes a tool called TXSAMC (Transport Cross Sections from Applied Monte Carlo) that produces shielded and homogenized multigroup cross sections for small fast reactor systems. The motivation for this tool ...
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(2016-07-28)We present an ultraviolet (UV) spectroscopic atlas containing 91 spectra of 22 unique Type Ia supernovae (SNe Ia). The spectra were observed using the Ultraviolet/Optical Telescope (UVOT) onboard the Swift space telescope. ...
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(2015-01-22)This dissertation presents three separate studies designed to examine how the different factors and determinants known to influence adolescent alcohol and tobacco use and the gender compositions of different adolescent ...
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(2012-12-10)Foredunes are formed and developed in association with vegetation. A bare sand area has been viewed as a measure of dune mobility or activity and researched in association with climate controls: particularly wind power, ...