4,794 research outputs found

    Relational Supervision: Jegnaship And Eldering As Emancipatory Pedagogy For Black Teacher Supervision

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    The case delves into the historical and cultural roots of African education, emphasizing the vital role of elders and community in the learning process. It examines the impact of African educational philosophies, particularly from the Nile and Niger river valleys, on the development of character, humanness, and spirituality. The case explores the adaptation of these philosophies by African people during the Middle Passage and their application in Western contexts for the supervision of African American teachers. By interweaving culture, history, education, and storytelling, the authors aim to highlight the unique contributions of African American educational experiences. They argue that these experiences provide valuable strategies for the liberation struggle and the transformation of Black teacher development. The case also explores contemporary issues in the teaching profession, such as the limited presence of African American educators, pedagogical negligence, and professional marginalization, proposing culturally-centered tools for community preservation and well-being. The central theme is the importance of relational supervision rooted in African and African American cultural knowledge, which is seen as key to nurturing Black novice teachers and fostering their professional development

    Sistema web para el proceso de control de inventario en la Empresa Jaec Contratista Generales SRL

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    La construcción de un sistema basado en web para el programa de gestión de inventarios de JAEC Contratistas General SRL es objeto de este estudio debido a que el nivel de precisión y rotación del inventario era insuficiente en las condiciones comerciales previas a su aplicación. el desarrollo del sistema se describe en detalle en este documento. El propósito de este estudio es determinar cómo afectará el sistema cibernético los procedimientos de control de existencias de JAEC Contratistas General SRL en el 2020. Para ello, se discutirán los aspectos teóricos del proceso de control de inventarios y las técnicas utilizadas para desarrollar el sistema en red. Para el desarrollo de sistemas web se adopta el método SCRUM por ser el más adecuado a las necesidades y etapas de desarrollo, y presenta un método de desarrollo incremental e iterativo. Este estudio adoptará un enfoque cuantitativo en el diseño experimental antes del experimento y realizará una prueba previa y una prueba posterior. Se utilizó como variable independiente el sistema web y como variable dependiente el proceso de control de inventario. Tomando 261 tipos de materiales como un todo, calcule la tasa de precisión del inventario y la tasa de rotación. El tamaño de la muestra fue de 156 artículos, estratificados en 24 días y registrados en 24 fichas de registro. En el proceso de muestreo se utilizan probabilidades simples. Use el registro para obtener datos, la herramienta es el registro (archivo), todo probado por pares. La implementación del sistema Web aumentó la tasa de precisión del inventario del 67,88 % al 100,29 % y la tasa de rotación del inventario aumentó del 51,33 % al 80,25 %. Los resultados anteriores permiten concluir que el sistema en línea mejora los procedimientos de control de stock de JAEC Contratistas General SR

    Total and Monomethyl Mercury in Fog Water from the Central California Coast

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    [1] Total mercury (HgT) and monomethyl mercury (MMHg) concentrations in fog collected from 4 locations in and around Monterey Bay, California during June-August of 2011 were 10.7 ± 6.8 and 3.4 ± 3.8 ng L−1respectively. In contrast, mean HgT and MMHg concentrations in rain water from March-June, 2011 were 1.8 ± 0.9 and 0.1 ± 0.04 ng L−1 respectively. Using estimates of fog water deposition from 6 sites in the region using a standard fog water collector (SFC), depositions of HgT and MMHg via fog were found to range from 42–4600 and 14–1500 ng m−2 y−1, which accounted for 7–42% of HgT and 61–99% of MMHg in total atmospheric deposition (fog, rain, and dry deposition), estimated for the coastal area. These initial measurements suggest that fog precipitation may constitute an important but previously overlooked input of MMHg to coastal environments. Preliminary comparisons of these data with associated chemical, meteorological and oceanic data suggest that biotically formed MMHg from coastal upwelling may contribute to the MMHg in fog water

    Beyond Conventional Boundaries: Advancing Equity and Inclusivity in Educational Supervision

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    This special issue of the Journal of Educational Supervision, Cases in Critical Supervision within School Contexts, critically examines educational supervision models, highlighting their limitations in fostering equity and inclusivity. As greater attention and awareness of diverse identities and experiences becomes more common in schools there also needs to be acknowledgement of how supervision is experienced by educators and enacted by instructional supervisors. We argue for a paradigm shift towards more empathetic and diverse supervisory practices that consider the varied backgrounds and needs of students. Throughout this special issue, researchers propose innovative approaches that prioritize collaboration, understanding, and the recognition of the unique potential of every teacher, educator, and student. Empowered with a willingness and an awareness of how educational experiences can be experienced differently, researchers suggest supervisory models to transform educational environments into spaces where all students, especially those from marginalized groups, can thrive

    Aerosol size distribution and radiative forcing response to anthropogenically driven historical changes in biogenic secondary organic aerosol formation

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    Emissions of biogenic volatile organic compounds (BVOCs) have changed in the past millennium due to changes in land use, temperature, and CO2 concentrations. Recent reconstructions of BVOC emissions have predicted that global isoprene emissions have decreased, while monoterpene and sesquiterpene emissions have increased; however, all three show regional variability due to competition between the various influencing factors. In this work, we use two modeled estimates of BVOC emissions from the years 1000 to 2000 to test the effect of anthropogenic changes to BVOC emissions on secondary organic aerosol (SOA) formation, global aerosol size distributions, and radiative effects using the GEOS-Chem-TOMAS (Goddard Earth Observing System; TwO-Moment Aerosol Sectional) global aerosol microphysics model. With anthropogenic emissions (e.g., SO2, NOx, primary aerosols) turned off and BVOC emissions changed from year 1000 to year 2000 values, decreases in the number concentration of particles of size Dp > 80 nm (N80) of > 25% in year 2000 relative to year 1000 were predicted in regions with extensive land-use changes since year 1000 which led to regional increases in the combined aerosol radiative effect (direct and indirect) of > 0.5 W m−2 in these regions. We test the sensitivity of our results to BVOC emissions inventory, SOA yields, and the presence of anthropogenic emissions; however, the qualitative response of the model to historic BVOC changes remains the same in all cases. Accounting for these uncertainties, we estimate millennial changes in BVOC emissions cause a global mean direct effect of between +0.022 and +0.163 W m−2 and the global mean cloud-albedo aerosol indirect effect of between −0.008 and −0.056 W m−2. This change in aerosols, and the associated radiative forcing, could be a largely overlooked and important anthropogenic aerosol effect on regional climates

    Matching Tree-Level Matrix Elements with Interleaved Showers

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    We present an implementation of the so-called CKKW-L merging scheme for combining multi-jet tree-level matrix elements with parton showers. The implementation uses the transverse-momentum-ordered shower with interleaved multiple interactions as implemented in PYTHIA8. We validate our procedure using e+e--annihilation into jets and vector boson production in hadronic collisions, with special attention to details in the algorithm which are formally sub-leading in character, but may have visible effects in some observables. We find substantial merging scale dependencies induced by the enforced rapidity ordering in the default PYTHIA8 shower. If this rapidity ordering is removed the merging scale dependence is almost negligible. We then also find that the shower does a surprisingly good job of describing the hardness of multi-jet events, as long as the hardest couple of jets are given by the matrix elements. The effects of using interleaved multiple interactions as compared to more simplistic ways of adding underlying-event effects in vector boson production are shown to be negligible except in a few sensitive observables. To illustrate the generality of our implementation, we also give some example results from di-boson production and pure QCD jet production in hadronic collisions.Comment: 44 pages, 23 figures, as published in JHEP, including all changes recommended by the refere

    Prescription Drug Diversion: Predictors of Illicit Acquisition and Redistribution in Three U.S. Metropolitan Areas

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    Objective: Prescription drug diversion, the transfer of prescription drugs from lawful to unlawful channels for distribution or use, is a problem in the United States. Despite the pervasiveness of diversion, there are gaps in the literature regarding characteristics of individuals who participate in the illicit trade of prescription drugs. This study examines a range of predictors (e.g., demographics, prescription insurance coverage, perceived risk associated with prescription drug diversion) of membership in three distinct diverter groups: individuals who illicitly acquire prescription drugs, those who redistribute them, and those who engage in both behaviors. Methods: Data were drawn from a cross-sectional Internet 763 AIMS Public Health Volume 2, Issue 4, 762-783. study (N = 846) of prescription drug use and diversion patterns in New York City, South Florida, and Washington, D.C.. Participants were classified into diversion categories based on their self-reported involvement in the trade of prescription drugs. Group differences in background characteristics of diverter groups were assessed by Chi-Square tests and followed up with multivariate logistic regressions. Results: While individuals in all diversion groups were more likely to be younger and have a licit prescription for any of the assessed drugs in the past year than those who did not divert, individuals who both acquire and redistribute are more likely to live in New York City, not have prescription insurance coverage, and perceive fewer legal risks of prescription drug diversion. Conclusion: Findings suggest that predictive characteristics vary according to diverter group

    Leprosy Associated with Atypical Cutaneous Leishmaniasis in Nicaragua and Honduras

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    In Central America, few cases of leprosy have been reported, but the disease may be unrecognized. Diagnosis is based on clinical criteria and histology. Preliminary field work in Nicaragua and Honduras found patients, including many children, with skin lesions clinically suggestive of atypical cutaneous leishmaniasis or indeterminate leprosy. Histology could not distinguish these diseases although acid-fast organisms were visible in a few biopsies. Lesions healed after standard antimicrobial therapy for leprosy. In the present study, patients, family members, and other community members were skin-tested and provided nasal swabs and blood samples. Biopsies were taken from a subgroup of patients with clinical signs of infection. Two laboratories analyzed samples, using local in-house techniques. Mycobacterium leprae, Leishmania spp. and Leishmania infantum were detected using polymerase chain reactions. Mycobacterium leprae DNA was detected in blood samples and nasal swabs, including some cases where leprosy was not clinically suspected. Leishmania spp. were also detected in blood and nasal swabs. Most biopsies contained Leishmania DNA and coinfection of Leishmania spp. with M. leprae occurred in 33% of cases. Mycobacterium leprae DNA was also detected and sequenced from Nicaraguan and Honduran environmental samples. In conclusion, leprosy and leishmaniasis are present in both regions, and leprosy appears to be widespread. The nature of any relationship between these two pathogens and the epidemiology of these infections need to be elucidated
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