897 research outputs found

    Single Crystal Membranes

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    Single crystal a- and c-axis tubes and ribbons of sodium beta-alumina and sodium magnesium beta-alumina were grown from sodium oxide rich melts. Additional experiments grew ribbon crystals containing sodium magnesium beta, beta double prime, beta triple prime, and beta quadruple prime. A high pressure crystal growth chamber, sodium oxide rich melts, and iridium for all surfaces in contact with the melt were combined with the edge-defined, film-fed growth technique to grow the single crystal beta-alumina tubes and ribbons. The crystals were characterized using metallographic and X-ray diffraction techniques, and wet chemical analysis was used to determine the sodium, magnesium, and aluminum content of the grown crystals

    Instructional Techniques for Improving Students’ Poetry Comprehension and Interpretation in Advanced Placement (AP) English Literature & Composition

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    This capstone seeks to answer the question: “What instructional techniques improve comprehension and interpretation of poetry for students in Advanced Placement (AP) English Literature & Composition?” Instructional techniques for both literacy and poetry were investigated, as was the role of poetry in the Common Core State Standards (CCSS) and classrooms, and course expectations set by The College Board. Research culminated in a two-week introductory unit for students in AP English Literature & Composition using Wiggins & McTighe’s Understanding by Design (UbD) framework. This unit is intended to provide a foundation for poetry study, which should continue throughout the rest of the year

    Examining the Governance Structure of Hartford Schools

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    Single crystal tubes of beta alumina

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    Edge-defined, film-fed growth process allows both tubular shapes and single crystallinity to be achieved. Beta alumina in single crystal form makes possible membranes with improved conductivities. Single crystal membranes also eliminate problems associated with electrical short circuiting of membrane due to possible sodium metal diffusion

    Effects of Retreating Glaciers on Seasonal Water Availability

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    Glacial recession caused by slowly warming temperatures will have a substantial impact on the availability of freshwater for hundreds of thousands to millions of people in the coming decades. The meltwater provided by glaciers in the summer months is a vital resource to several regions of the world; some much more reliant than others. This presentation will highlight the role that glaciers play in the hydrology of glacially fed river systems, and attempt to understand the severity of changes to future water availability as a result of retreating glaciers. Freshwater shortage could have devastating effects on agricultural yield, drinking water availability, hydroelectric power generation, sanitation, industrial processing and dozens of other uses especially in the late summer of already water strained areas. Despite the amount of research being done on this subject, there is still significant evidence missing for drawing conclusions on the state of future freshwater output of glaciers. Further knowledge and understanding of the topic may prove critical in adapting to water scarcity for certain areas

    An experimental and analytical investigation of the ductile fracture of polymers

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    Analytical and experimental investigation of ductile fracture of polymers using adaptation of Dugdale mode

    Development of single crystal beta-alumina membrane

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    Feasibility of crystal growth technique for beta alumina membrane from molybdenum, tungsten, and iridiu

    Using Filling Stations for Mathematics Skill Building in Kindergarten: Harnessing Technology Tools to Remediate Skill Deficits

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    Education professionals and researchers have underscored the importance of mathematics education for young children and the awareness that young children can learn early mathematics concepts that serve as a foundation for later years. The need for teachers to support individual needs for some children to build their conceptual understanding is clear as many children show deficits during kindergarten while others are ready to advance to the next areas of instruction. One way to meet the needs of children who need more work in foundational areas of mathematics is to utilize technology within filling stations in the classroom. To this end, this article discusses ways to expose children to more work in basic concepts and skills in mathematics through the use of a filling station with technology supports for children to work on foundational skills

    Two Sides of the Story: Media Choice and Media Use of Web Based eMail and Live Chat Customer Services

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    Chat services that provide real-time help for customers have been adopted widely and rapidly on many websites in the past few years. Our paper investigates online live chat customer services from two perspectives: media choice between chat service and web e-mail, and media use of chat service analyzed from the perspectives of characteristics, interactivity and socioemotional content. We collected four types of data including system log files, surveys, excerpts of chat transcripts, and unstructured interviews with service representatives. In addition to quantitative data analysis, ATLAS.ti was used to analyze qualitative data in our study. We found that for the purpose of seeking help with questions, more users chose to use web email than chat service. When using the chat service, representatives and users interact with each other through text exchange, page pushing, and co-browsing. They also perform activities such as clarification and attracting attention, and use socioemotional content such as greetings and expressing feelings
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