4,886 research outputs found

    The Power of Empathy: A Critical Narrative Inquiry of Cultural Competencies in New Teachers

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    Given the large homogeneous workforce of predominately White, middle-class female Kā€“12 educators combined with the rising population of diverse students in the United States and the disproportionate achievement gap of students of color compared to their White peers, I sought to discover how new millennial educators defined and used empathy to build their own cultural competencies as well as discover how these teachers used empathy to strengthen the teacherstudent relationships across cultural differences. Using the conceptual frameworks of Paulo Freireā€™s (1970) pedagogy and Wang et al.ā€™s (2003) definition of ethno-cultural empathy, I conducted a critical narrative inquiry of five first-year teachers who did not share the racial or ethnic background of the majority of their students of color. From the participantsā€™ stories, six major themes surfaced: (a) the role of empathy in the teacher-student relationships, (b) the struggle between empathy and sympathy, (c) their contrasting views on empathy and content, (d) the relationship between empathy and cultural competency, (e) the importance of empathy related to trauma, and (f) the personal limitations of empathy. I present a proposal for a new theoretical framework resulting from the symbiotic relationship of ethno-cultural empathy and critical pedagogy, called Critical Empathy, as well as recommendations for teacher formation institutions to prioritize an empathy formation that focuses on critical empathy development, self-awareness, administrative management, and self-care strategies

    Alien Registration- Hughes, Dean M.,Sr. (Portland, Cumberland County)

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    https://digitalmaine.com/alien_docs/21419/thumbnail.jp

    FIC/FEM formulation with matrix stabilizing terms for incompressible flows at low and high Reynolds numbers

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    The final publication is available at Springer via http://dx.doi.org/10.1007/s00466-006-0060-yWe present a general formulation for incompressible fluid flow analysis using the finite element method. The necessary stabilization for dealing with convective effects and the incompressibility condition are introduced via the Finite Calculus method using a matrix form of the stabilization parameters. This allows to model a wide range of fluid flow problems for low and high Reynolds numbers flows without introducing a turbulence model. Examples of application to the analysis of incompressible flows with moderate and large Reynolds numbers are presented.Peer ReviewedPostprint (author's final draft

    Motivation, Fortitude and Success: The Impact of Academic Efficacy and Academic Commitment on Academic Performance among Minority High School Students

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    The importance of understanding the elements of success in the education of minority high school students is immense. Recognizing the causes of academic success for these students allows educators to employ better educational and motivational strategies. It has been shown that academic efficacy and academic commitment have a positive impact on academic performance. However, the interaction and relationship between these two variables in having a positive effect on education outcomes among minority high school students is not clear. This paper looks at the relationship between academic efficacy and academic commitment on academic performance among minority high school students. The findings reveal that academic commitment is positively associated with academic performance. However, while academic efficacy has a positive impact on academic commitment the results show that academic efficacy has no direct impact on academic performance among the respondents

    Widespread, routine occurrence of pharmaceuticals in sewage effluent, combined sewer overflows and receiving waters

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    Research addressing the occurrence, fate and effects of pharmaceuticals in the aquatic environment has expanded rapidly over the past two decades, primarily due to the development of improved chemical analysis methods. Significant research gaps still remain, however, including a lack of longer term, repeated monitoring of rivers, determination of temporal and spatial changes in pharmaceutical concentrations, and inputs from sources other than wastewater treatment plants (WWTPs), such as combined sewer overflows (CSOs). In addressing these gaps it was found that the five pharmaceuticals studied were routinely (51-94 % of the time) present in effluents and receiving waters at concentrations ranging from single ng to Ī¼g L-1. Mean concentrations were in the tens to hundreds ng L-1 range and CSOs appear to be a significant source of pharmaceuticals to water courses in addition to WWTPs. Receiving water concentrations varied throughout the day although there were no pronounced peaks at particular times. Similarly, concentrations varied throughout the year although no consistent patterns were observed. No dissipation of the study compounds was found over a 5 km length of river despite no other known inputs to the river. In conclusion, pharmaceuticals are routinely present in semi-rural and urban rivers and require management alongside more traditional pollutants

    Random UV-C mutagenesis of Scheffersomyces (formerly Pichia) stipitis NRRL Y-7124 to improve anaerobic growth on lignocellulosic sugars

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    Scheffersomyces (formerly Pichia) stipitis NRRL Y-7124 was mutagenized using UV-C irradiation to produce yeast strains for anaerobic conversion of lignocellulosic sugars to ethanol. UV-C irradiation potentially produces large numbers of random mutations broadly and uniformly over the whole genome to generate unique strains. Wild-type cultures of S. stipitis NRRL Y-7124 were subjected to UV-C (234Ā nm) irradiation targeted at approximately 40% cell survival. When surviving cells were selected in sufficient numbers via automated plating strategies and cultured anaerobically on xylose medium for 5Ā months at 28Ā°C, five novel mutagenized S. stipitis strains were obtained. Variable number tandem repeat analysis revealed that mutations had occurred in the genome, which may have produced genes that allowed the anaerobic utilization of xylose. The mutagenized strains were capable of growing anaerobically on xylose/glucose substrate with higher ethanol production during 250- to 500-h growth than a Saccharomyces cerevisiae yeast strain that is the standard for industrial fuel ethanol production. The S. stipitis strains resulting from this intense multigene mutagenesis strategy have potential application in industrial fuel ethanol production from lignocellulosic hydrolysates

    Common Data Acquisition Systems (DAS) Software Development for Rocket Propulsion Test (RPT) Test Facilities

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    The advent of the commercial space launch industry and NASA's more recent resumption of operation of Stennis Space Center's large test facilities after thirty years of contractor control resulted in a need for a non-proprietary data acquisition systems (DAS) software to support government and commercial testing. The software is designed for modularity and adaptability to minimize the software development effort for current and future data systems. An additional benefit of the software's architecture is its ability to easily migrate to other testing facilities thus providing future commonality across Stennis. Adapting the software to other Rocket Propulsion Test (RPT) Centers such as MSFC, White Sands, and Plumbrook Station would provide additional commonality and help reduce testing costs for NASA. Ultimately, the software provides the government with unlimited rights and guarantees privacy of data to commercial entities. The project engaged all RPT Centers and NASA's Independent Verification & Validation facility to enhance product quality. The design consists of a translation layer which provides the transparency of the software application layers to underlying hardware regardless of test facility location and a flexible and easily accessible database. This presentation addresses system technical design, issues encountered, and the status of Stennis development and deployment

    Surface agnostic metrics for cortical volume segmentation and regression

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    The cerebral cortex performs higher-order brain functions and is thus implicated in a range of cognitive disorders. Current analysis of cortical variation is typically performed by fitting surface mesh models to inner and outer cortical boundaries and investigating metrics such as surface area and cortical curvature or thickness. These, however, take a long time to run, and are sensitive to motion and image and surface resolution, which can prohibit their use in clinical settings. In this paper, we instead propose a machine learning solution, training a novel architecture to predict cortical thickness and curvature metrics from T2 MRI images, while additionally returning metrics of prediction uncertainty. Our proposed model is tested on a clinical cohort (Down Syndrome) for which surface-based modelling often fails. Results suggest that deep convolutional neural networks are a viable option to predict cortical metrics across a range of brain development stages and pathologies

    n-type chalcogenides by ion implantation.

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    Carrier-type reversal to enable the formation of semiconductor p-n junctions is a prerequisite for many electronic applications. Chalcogenide glasses are p-type semiconductors and their applications have been limited by the extraordinary difficulty in obtaining n-type conductivity. The ability to form chalcogenide glass p-n junctions could improve the performance of phase-change memory and thermoelectric devices and allow the direct electronic control of nonlinear optical devices. Previously, carrier-type reversal has been restricted to the GeCh (Ch=S, Se, Te) family of glasses, with very high Bi or Pb 'doping' concentrations (~5-11 at.%), incorporated during high-temperature glass melting. Here we report the first n-type doping of chalcogenide glasses by ion implantation of Bi into GeTe and GaLaSO amorphous films, demonstrating rectification and photocurrent in a Bi-implanted GaLaSO device. The electrical doping effect of Bi is observed at a 100 times lower concentration than for Bi melt-doped GeCh glasses.This work was supported by the UK EPSRC grants EP/I018417/1, EP/I019065/1 and EP/I018050/1.This is the author accepted manuscript. The final version is available from NPG via http://dx.doi.org/10.1038/ncomms634
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