426 resultados para 1206


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This article presents themes from a qualitative study of 58 African American female kinship caregivers in San Francisco. Core concepts that emerged describe various paths along which children move into kin homes, and caregivers' mixed emotional reactions to becoming surrogate parents. Women also discussed multiple family roles they assumed after taking in children. Responses highlight three primary reasons for becoming caregivers that center on providing for and protecting these children—particularly from the perceived threat of the public foster care system—and ultimately preserving the family unit. Paradoxically, caregivers' reasons mirror the stated goals of the public foster care system, which they view as a threat to family stability. We discuss the problems of implementing practice and policy recommendations for permanency and family preservation and how to bridge the gap between the deeply held negative beliefs of African American caregivers towards the public system and begin to build trust.

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Background: Studies of oyster microbiomes have revealed that a limited number of microbes, including pathogens, can dominate microbial communities in host tissues such as gills and gut. Much of the bacterial diversity however remains underexplored and unexplained, although environmental conditions and host genetics have been implicated. We used 454 next generation 16S rRNA amplicon sequencing of individually tagged PCR reactions to explore the diversity of bacterial communities in gill tissue of the invasive Pacific oyster Crassostrea gigas stemming from genetically differentiated beds under ambient outdoor conditions and after a multifaceted disturbance treatment imposing stress on the host. Results: While the gill associated microbial communities in oysters were dominated by few abundant taxa (i.e. Sphingomonas, Mycoplasma) the distribution of rare bacterial groups correlated to relatedness between the hosts under ambient conditions. Exposing the host to disturbance broke apart this relationship by removing rare phylotypes thereby reducing overall microbial diversity. Shifts in the microbiome composition in response to stress did not result in a net increase in genera known to contain potentially pathogenic strains. Conclusion: The decrease in microbial diversity and the disassociation between population genetic structure of the hosts and their associated microbiome suggest that disturbance (i.e. stress) may play a significant role for the assembly of the natural microbiome. Such community shifts may in turn also feed back on the course of disease and the occurrence of mass mortality events in oyster populations.

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An integrated instrument package for measuring and understanding the surface radiation budget of sea ice is presented, along with results from its first deployment. The setup simultaneously measures broadband fluxes of upwelling and downwelling terrestrial and solar radiation (four components separately), spectral fluxes of incident and reflected solar radiation, and supporting data such as air temperature and humidity, surface temperature, and location (GPS), in addition to photographing the sky and observed surface during each measurement. The instruments are mounted on a small sled, allowing measurements of the radiation budget to be made at many locations in the study area to see the effect of small-scale surface processes on the large-scale radiation budget. Such observations have many applications, from calibration and validation of remote sensing products to improving our understanding of surface processes that affect atmosphere-snow-ice interactions and drive feedbacks, ultimately leading to the potential to improve climate modelling of ice-covered regions of the ocean. The photographs, spectral data, and other observations allow for improved analysis of the broadband data. An example of this is shown by using the observations made during a partly cloudy day, which show erratic variations due to passing clouds, and creating a careful estimate of what the radiation budget along the observed line would have been under uniform sky conditions, clear or overcast. Other data from the setup's first deployment, in June 2011 on fast ice near Point Barrow, Alaska, are also shown; these illustrate the rapid changes of the radiation budget during a cold period that led to refreezing and new snow well into the melt season.

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Geological-geophysical data obtained during Cruises 7, 11, and 12 of R/V Akademic Nikolay Strakhov (1989-1991) within the international project EQUARIDGE in the Strakhov Fracture Zone region (4°N) are presented. The trough of the fracture is interpreted as an open extension joint, a graben produced by stretching along the axis of the Mid-Atlantic Ridge. Bedrock studies showed that typical mid-ocean tholeiitic basalts occur within the narrow (60 nm wide) axial rift zone, whereas igneous rocks not typical for the ocean were found on the eastern and western flank plateaus. This allows to suppose that a reworked relict continental-type basement of pre-Upper Jurassic age possibly exists beneath the flank plateaus, within the segment under discussion. The above data correspond to the hypothesis of E. Bonatti about nonspreading nature of the basement of Mid-Atlantic Ridge within the equatorial segment and the Strakhov Fracture Zone.

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En realización del Proyecto de Investigación Interdisciplinaria que dirigí en 20032005, integrado por docentes-investigadores de Comunicación, Letras y Educación, junto a maestros de la zona, hemos constatado la existencia de contradicción entre la heterogeneidad de la población escolar tanto en lo que se refiere a primeras lenguas o variedades de la lengua mayoritaria como así también a las culturas de origen por un lado, y las representaciones docentes sobre el Lenguaje, por el otro. Esta contradicción, a menudo no felizmente resuelta, generaba retrasos en el aprendizaje, discriminación, violencia, exclusión, del niño y su familia, así como también frustración y fracaso en el maestro. Entendimos como una causa importante el rechazo a las variedades y variaciones no canónicas detectables en el lenguaje de quienes no tenían el Español o determinada variedad de Español como L1, situación frecuente en el caso de inmigrantes (se trataba de hablantes de Quechuaymará o Guaraní como L1), con la producción de hechos de 'contacto de lenguas' no reconocidos positivamente por la comunidad receptora. Siendo en esos casos el maestro el principal actor social, decidimos interactuar con el mismo, aportando fundamento teórico y análisis de casos, valorizando y tratando de resignificar su experiencia. A partir de la premisa: 'educación es diálogo' (Paulo Freire) y del poder explicativo de las Ciencias del Lenguaje (especialmente Sociolingüística, Etnopragmática, Estudios del Discurso, siguiendo lingüistas como Halliday, Lavandera, Arnoux, Martínez), que permiten un reconocimiento positivo de variedades y variaciones, así como de las miradas pedagógicas que valorizan el `error' (Castorina, Camilloni, Lenzi), concretamos 2 Proyectos de Extensión avalidos por la UNLP y por el ISFDyT Nº9 de La Plata, que se tradujeron en Jornadas, Cursos de Capacitación a docentes de distintos niveles (2008) y Talleres de Capacitación en las carreras docentes del Instituto (2009), a relatar en esta ponencia

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La presente tesis tiene como propósito central estudiar las visiones de sí de jóvenes mujeres con discapacidad incluidas en procesos de escolarización en escuelas públicas del sistema de educación tanto común como especial de la ciudad de La Plata y el Gran La Plata, provincia de Buenos Aires. La relevancia de la temática propuesta radica en que, en los estudios de juventud y género así como en los referidos al campo escolar, se observan escasas investigaciones sobre las mujeres con discapacidad. Desde una perspectiva socio-antropológica y a través de un enfoque etnográfico, se intenta comprender e interpretar las visiones de sí de las jóvenes con discapacidad en la trama de sus narrativas autobiográficas. Las estrategias metodológicas están orientadas a registrar la situación vivida por integrantes de este grupo social específico, focalizando en las relaciones entre el contexto social y cultural de pertenencia, el sexo género y la escolarización de las mujeres. El estudio realizado ha identificado que las jóvenes mujeres con discapacidad constituyen una de las poblaciones menos escolarizadas y más vulneradas en sus derechos. Asimismo, ha sido posible registrar que las visiones discapacitantes e inferiorizantes de las jóvenes están vinculadas a sus experiencias en la vida escolar, signada por rupturas, exclusiones, discontinuidades y violaciones a múltiples derechos, incluido el derecho a la educación. Se observa así la forma en que las instituciones y el sistema educativo no hacen efectivo el reconocimiento de las jóvenes mujeres con discapacidad como sujetas de derecho, prevista en la Convención sobre los Derechos de las Personas con Discapacidad, de jerarquía constitucional en la Argentina