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Evaluation Of A Centrifuge Consolidation Technique To Determine The Effects Of Temperature And Time On Kaolinite Properties, Esteban Miranda Pinzon

Civil Engineering Undergraduate Honors Theses

Abstract

The effects of time and temperature on the moisture content and unit weight profiles, as developed during a centrifuge consolidation process, were observed during the research program that is described herein. Specifically, a Beckman-Coulter Model J6-MI centrifuge with a six-place JS-4.2A swinging bucket rotor was utilized to consolidate kaolinite slurry samples. The consolidation procedure utilized specially designed slurry consolidometers, made from acrylic tubes with inside diameters of 2.63 inches (6.67 cm) and heights of 5.13 inches (13.04 cm). The tested kaolinite slurry samples were created by mixing 400 grams of dry kaolinite clay powder with 200 grams of de-aired …

Teacher And Administrator Perceptions Of The Teacher Excellence And Support System (Tess) In Arkansas, Allison Louise Byford

Graduate Theses and Dissertations

The purpose of this study was to investigate differences in Arkansas teachers’ and building-level administrators’ perceptions regarding the purpose of the Arkansas TESS teacher evaluation system, whether TESS authentically assesses teacher effectiveness, how teacher evaluation data are used, and how the TESS process supports learner-centered professional development. Additionally, the relationship of teacher and administrator demographics on their perceptions of TESS was explored. The results of this study highlight the differences in perceptions in all areas questioned along with misalignment in perceptions among teachers. Overall, the study points toward the need for clear communication and the cultivation of relationships among building …