21,080 research outputs found

    Iraq and Afghanistan veterans’ experiences living with their parents after separation from the military

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    When military service members separate from the military, many return to their families of origin, living with their parents for a period of several weeks to years. While research with veterans and their spouses has documented the particular strain of this reintegration period on veterans and their partners, little research to date has examined veterans’ experiences living with their parents. The present study sought to fill this research gap by investigating veterans’ experiences living with their parents using qualitative, in-depth interviews with Iraq and Afghanistan veterans in California. Overall, veterans appreciated the instrumental and emotional support their parents provided when they separated. However, in some cases, living with parents also produced conflict and strain. In situations where adult veteran children had difficulty with the transition to civilian life or returned with mental health problems, parents were often the first to identify these problems and to support their children in accessing appropriate care. We analyze these findings in light of family systems theory, identifying ways in which adult veteran children continue a process of differentiation while living with their parents and maintaining emotional connectedness. We suggest ways that clinicians can better support veterans and their parents through the reintegration period and recommend that programming for military families explicitly include parents of service members in addition to conjugal families

    Electron-polaron--electron-polaron bound states in mass-gap graphene-like planar quantum electrodynamics: ss-wave bipolarons

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    A Lorentz invariant version of a mass-gap graphene-like planar quantum electrodynamics, the parity-preserving U(1)×U(1)U(1)\times U(1) massive QED3_3, exhibits attractive interaction in low-energy electron-polaron--electron-polaron ss-wave scattering, favoring quasiparticles bound states, the ss-wave bipolarons.Comment: 6 pages, two figures, references adde

    Valence-bond theory of highly disordered quantum antiferromagnets

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    We present a large-N variational approach to describe the magnetism of insulating doped semiconductors based on a disorder-generalization of the resonating-valence-bond theory for quantum antiferromagnets. This method captures all the qualitative and even quantitative predictions of the strong-disorder renormalization group approach over the entire experimentally relevant temperature range. Finally, by mapping the problem on a hard-sphere fluid, we could provide an essentially exact analytic solution without any adjustable parameters.Comment: 5 pages, 3 eps figure

    Chiral spin-orbital liquids with nodal lines

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    Strongly correlated materials with strong spin-orbit coupling hold promise for realizing topological phases with fractionalized excitations. Here we propose a chiral spin-orbital liquid as a stable phase of a realistic model for heavy-element double perovskites. This spin liquid state has Majorana fermion excitations with a gapless spectrum characterized by nodal lines along the edges of the Brillouin zone. We show that the nodal lines are topological defects of a non-Abelian Berry connection and that the system exhibits dispersing surface states. We discuss some experimental signatures of this state and compare them with properties of the spin liquid candidate Ba_2YMoO_6.Comment: 5 pages + supplementary materia

    Cartografia e monitoramento orbital da sazonalidade das Unidades de Vegetação da Região de Vitória da Conquista (BA).

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    Esse trabalho procurou identificar, cartografar, quantificar e analisar as unidades de vegetação, assim como seus respectivos comportamentos sazonais, dispostas em uma área de transição entre a floresta semidecidual e a caatinga, entre as coordenadas geográficas 14º00´/15º00´S e 40º30´/42º00´W, no sudoeste do Estado da Bahia. Foram utilizadas e manipuladas Sistemas de Informações Geográficas, interpretações analógicas de imagens do sensor TM-LANDSAT e composições quinzenais de máximo valor do IVDN-AVHRR-NOAA, resultando na cartografia, quantificação e na análise da sazonalidade de quatro unidades de vegetação, mata de cipó, caatinga densa, caatinga aberta e caatinga carrasco, além de correlações lineares entre os valores IVDN e pluviométricos

    Mott transition in the Hubbard model away from particle-hole symmetry

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    We solve the Dynamical Mean Field Theory equations for the Hubbard model away from the particle-hole symmetric case using the Density Matrix Renormalization Group method. We focus our study on the region of strong interactions and finite doping where two solutions coexist. We obtain precise predictions for the boundaries of the coexistence region. In addition, we demonstrate the capabilities of this precise method by obtaining the frequency dependent optical conductivity spectra.Comment: 4 pages, 4 figures; updated versio

    Propagação vegetativa do mogno (Swietenia macrophylla King) por enraizamento de estacas semilenhosas em câmara úmida.

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    A exploração predatória do mogno representa uma ameaça à sobrevivência da espécie, provocando a destruição da maior parte do germoplasma, especialmente daquelas árvores com as características mais desejáveis para a produção de madeira, às quais representam alto potencial de conservação "in situ" como plantas matrizes. Diante desta realidade e dada a importância da espécie para a produção de madeira de alto valor, são necessários estudos com o objetivo de desenvolver um método prático de reprodução vegetativa para estabelecer uma estratégia de conservação e reprodução do germoplasma de melhor qualidade. Entre os métodos de propagação vegetativa recomendados a espécies tropicais para produção de madeira, destaca-se o enraizamento de estacas semilenhosas em câmara úmida. O objetivo deste trabalho foi determinar a eficiência de diferentes substratos e concentração de ácido indolbutírico (AIB) no enraizamento de estacas semilenhosas de S. macrophylla, utilizando uma câmara propagadora de subirrigação.bitstream/item/164612/1/3990.pd

    SGI como instrumento complementar na avaliação do impacto ambiental da agricultura.

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    Divulga a metodologia, desenvolvida pelo Núcleo, de caracterização e avaliação do impacto ambiental da agricultura, baseada no uso de SGI. O projeto foi executado sobre conjuntos de pequenas propriedades com diferentes sistemas de produção. Na escala municipal articulou espacialmente, via SGI, o uso das terras e os coeficientes técnicos dos sistemas de produção aferentes. Foram geradas 32 cartas de impacto ambiental da atividade agrícola, por recursos e insumos
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