Abstract- This paper will investigate the use of a three-to-one Matrix converter to synchronize the electrical energy and condition the output of the wind generator. A Matrix converter is a direct ACAC solution, removing the need for large smoothing capacitors in a typical rectifier/inverter solution. This paper will briefly review the Matrix converter operational theory. A simulation and the practical results of a three-to-one phase matrix converter for varying input frequencies are also presented. The conclusion shows that the proposal is a viable solution for small power wind harvesting.

Conics and Geometry is a report that focuses on the development of new approaches in mathematics by breaking from the accepted norm of the time. The conics themselves have their beginning in this manner. The author uses three ancient problems in geometry to illustrate this trend. Doubling the cube, squaring the circle, and trisecting an angle have intrigued mathematicians for centuries. The author shows various approaches at solving these three problems: Hippias’ Quadratrix to trisect an angle and square the circle, Pappus’ hyperbola to trisect an angle, and Little and Harris’ simultaneous solution to all three problems. After presenting these approaches, the focus turns to the conic sections in the non-Euclidean geometry known as Taxicab geometry. / text

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This investigation used a one-group pretest-posttest design to examine the relationship between a tier three reading intervention program (i.e., a program designed for students that have failed to respond to regular (tier one) and resource (tier two) supports), and grade-level reading gains, as measured using the Fountas and Pinnell Benchmark Assessment System (Fountas & Pinnell, 2010), for 140 students between grades two and four. All students included in this study began well-below their expected grade-level in reading (i.e., two or more grade-levels below). In order to describe the gains made in grade-level reading ability, the Fountas and Pinnell Benchmark Assessment System (Fountas & Pinnell, 2010) was used pretest and posttest to track reading gains. Results from descriptive statistics, Kruskal-Wallis H tests, Mann-Whitney U tests, t-tests, and a multiple regression were indicative of positive reading gains. Approximately 74% of participants achieved grade-level reading gains that had the potential to close the reading gap (i.e., 0.75 grade-levels or more as measured using the Fountas and Pinnell Benchmark Assessment System (Fountas & Pinnell, 2010)). These results were similar for all participants regardless of gender, diagnosis status (i.e., garden-variety poor reader, physical disability, and learning/attentional disability) or first language status (i.e., English as an additional language or English). This study provides preliminary evidence that this intervention is improving reading outcomes for tier three students. Moving forward, stakeholders of this division would be encouraged to develop a well-designed, structured mixed-methods research study with standardized assessment measures and planned follow-up.

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This study reviews the literature and updates qualitative and quantitative impacts based on new research and applies a partial greenhouse gas (GHG) emissions cost benefit analysis to the Three Gorges Dam Project (TGDP) in China. The results of CBA suggested a 22.305 billion dollars net present value (using Nordhaus’s 2007 optimal carbon price trajectory with assumed average social discount rate (SDR) of 4% assumptions) and a 440.324 billion dollars net present value (based on Nordhaus’s Model using Stern’s assumption with 1% SDR). This sensitivity analysis indicates that social discount rates highly affect the final results. This study extends the GHG emissions impact component by updating carbon prices and calculation methods, thereby updating the GHG component of Morimoto and Hope’s 2004 study. Although the CBA is limited to the GHG component, a review of recent literature and preliminary impact analysis provides the groundwork for a more comprehensive analysis for future study.