The focus of the current study was to examine the effects of looping on academic achievement and self-efficacy for Exceptional Student Education (ESE) students. The basic design of this study was causal comparative, or ex post facto, because the researcher was seeking to identify a difference in achievement based on developmental scale scores between the two groups of looping and non-looping students with ESE classifications. A retrospective causal comparative study was chosen because the researcher began with a potential cause, looping, and studied the potential effects on achievement and self efficacy. The hypotheses were that the experimental group would outperform the control group on student achievement measures in reading and math as a result of participation in the looping classroom. In addition, it was hypothesized that the experimental group would outperform the control group on measures of self-efficacy and that there would be a correlation between reading and math developmental scale scores and self-efficacy scores. Results indicated no statistically significant difference between the experimental and control groups on measures of achievement in reading and math. Additionally, no statistically significant difference was found between the groups on measures of self-efficacy. However, moderate and statistically significant relationships were found between self-efficacy scores and reading and math development, respectively. The findings of this study indicate further research may be warranted to explore the benefits of looping in providing a more positive environment for students' emotional growth.

The price and accessibility of fossil fuels, especially crude oil, are subject to considerable fluctuations due to growing demand on energy, limited resources, and energy security concerns. In addition, climate change caused by burning of fossil fuels is a challenge that energy sector is currently facing. These challenges incentivize development of alternative processes with no greenhouse gas emissions that can meet transportation fuels, chemical liquids, and electricity demands. Coal-based processes are of particular interest because coal price is both low and stable. However, these processes have a large environmental impact and are also less economically attractive than natural gas based plants due to the recent significant drop in natural gas price. However, even for natural gas plants, attempts to reduce CO2 emissions by using traditional CO2 capture and sequestration technologies not only decrease the thermal efficiency and profitability of the plant significantly but still release some CO2 to the atmosphere. The aim of this thesis is to develop, simulate and optimize an integrated polygeneration plant that uses multiple feedstocks and produces multiple products with low to zero CO2 emissions. Several process alternatives are investigated in this work to show the effect of each feedstock and product on the performance of the proposed plant. A comprehensive study is performed in each section, including process simulation in Aspen Plus software, development of custom models required for some units, as well as cost analysis by using Aspen Icarus software and empirical cost estimations from literature. Moreover, derivative free optimization techniques such as particle swarm optimization (PSO), genetic algorithm (GA) and simulated annealing (SA) are implemented to drive the design to economically optimum conditions as a function of the market price and carbon taxes. The final model will also introduce emerging technologies that can achieve higher efficiency and lower CO2 emissions compared to commercial systems, such as chemical looping gasification, chemical looping combustion, nuclear heat reforming, etc. By integrating multiple feedstocks and processes, the model can exploit certain synergies which are unavailable to traditional plants, resulting in significant efficiency improvements. In addition to power and liquid fuels, this polygeneration process offers benefits for petrochemical plants. Despite limited worldwide crude oil reserves, the demand for petrochemical products is still growing fast and it is highly important for petrochemical industry to find new resources as feedstock and diversify their supply chain network. By integration of the polygeneration plant in the same facility with novel processes that produce olefins (petrochemical feedstock) not from oil, but from syngas, it is possible to supply the required feed at lower cost than commercial steam cracking plants. / Thesis / Doctor of Philosophy (PhD)

Project CHILD (Changing How Instruction for Learning is Delivered) provides an avenue for educational change using a triangulated approach. Using data from the Florida Department of Education, this research studies the Project CHILD learning approach on preparing students for success on portions of the Florida Comprehensive Assessment Test (FCAT) using results from fifteen charter schools in the state of Florida, seven participating in Project CHILD and eight non-participating charter schools for the 2008-2009 school-year. Dispersion statistics such as range and standard deviation as well as independent t tests are computed to compare the percentage of students in grades three to five scoring levels 3 and higher on the reading and mathematics portions, and fourth grade students scoring a 3.5 or higher on the writing assessment of the FCAT. Project CHILD schools had smaller ranges and standard deviations in the majority of the comparisons. Descriptively, this suggests that students in the Project CHILD schools are performing closer to the school average. There were no statistically significance differences between the Project CHILD schools and non-Project CHILD schools for grade level comparisons, nor on any grade level aggregate outcomes (i.e., grades 3-5 school FCAT reading, mathematics, or writing mean). However moderate effect sizes were seen for reading in grade four and writing assessments in grade four. The non-statistically significant findings were likely due to low power, and the moderate effect sizes suggest evidence of practical significance.

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