1,874 research outputs found

    Advancing Communities of Learning: A Collaborative Project between Local Universities, Funding Agencies, and Nonprofits to Develop a Subsidized Senior-Transportation Plan

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    The growing population of seniors in the United States poses both interesting and challenging transportation policy issues that demand research on alternatives to current transportation systems. This study was motivated by a local foundation’s interest in senior quality-of-life issues in the communities served. The aim of this study was to assess senior transportation needs and systems as a means to move policy makers and funders closer to providing high-quality senior transportation services. The localized nature of senior transportation needs is best examined as a case study. In this article, one mid-sized Indiana community is examined using focus group interviews and individual surveys of senior citizens. In addition, a survey of the literature on senior-transportation models provided critical information relevant to formulating best-practice recommendations for community-level senior-transportation systems. To design effective senior-transportation systems, five critical factors are evaluated. Finally, the article presents a case study highlighting the importance of multisector collaboration in addressing the challenges and opportunities associated with critical senior-transportation issues in upcoming decades

    Three dimensional steady and unsteady asymmetric flow past wings of arbitrary planforms

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    The nonlinear discrete vortex method was extended to treat the problem of asymmetric flows past a wing with leading-edge separation, including steady and unsteady flows. The problem was formulated in terms of a body-fixed frame of reference, and the nonlinear discrete vortex method was modified accordingly. Only examples of flows past delta wings are presented. Comparison of these results with experimental results for a delta wing undergoing a steady rolling motion at zero angle of attack demonstrates the superiority of the present method in obtaining highly accurate loads. Numerical results for yawed wings at large angles of attack are also presented. In all cases, total load coefficients, pressure distributions and shapes of the free-vortex sheets are shown

    How to Solve the Fronthaul Traffic Congestion Problem in H-CRAN?

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    The design of efficient wireless fronthaul connections for future heterogeneous networks incorporating emerging paradigms such as heterogeneous cloud radio access network (H-CRAN) has become a challenging task that requires the most effective utilization of fronthaul network resources. In this paper, we propose and analyze possible solutions to facilitate the fronthaul traffic congestion in the scenario of Coordinated Multi-Point (CoMP) for 5G cellular traffic which is expected to reach ZetaByte by 2017. In particular, we propose to use distributed compression to reduce the fronthaul traffic for H-CRAN. Unlike the conventional approach where each coordinating point quantizes and forwards its own observation to the processing centre, these observations are compressed before forwarding. At the processing centre, the decompression of the observations and the decoding of the user messages are conducted in a joint manner. Our results reveal that, in both dense and ultra-dense urban small cell deployment scenarios, the usage of distributed compression can efficiently reduce the required fronthaul rate by more than 50% via joint operation

    Commonwealth Professional Fellowship: the wealth of experience and lessons learned.

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    The Commonwealth Professional Fellowship (CPF) is a programme of the Commonwealth Scholarship Commission in association with the British Council. The Fellowship is aimed at providing a professional development opportunity for mid-career professionals from Commonwealth developing countries in diverse disciplines. Fellows who take part in this programme spend a period of one to three months in the United Kingdom to keep abreast of current trends and developments, and receive training in appropriate fields

    Study of the Effect of γ-Irradiation on Copper Single Crystals by Etching Technique

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    The effect of γ-irradiation with low energies on samples of copper single crystals with oriented surfaces of (111), (100) and (621) was studied by etching technique. The etch pits show a formation of glide bands, polygonized walls and Blisters as result to irradiation

    Methods for the Phenotypic Detection of Extended Spectrum Beta Lactamase (ESBL)-Producing Bacteria

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    1983. These enzymes possess the ability to inactivate susceptible β-lactam antibiotics i.e. penicillins, first, second and third generation cephalosporins and aztreonam, but not cephamycins and carbapenems . Their mode of action is by hydrolyzing the β-lactam ring. Even before the first β-lactam antibiotic (penicillin) was developed, resistance to β-lactam antibiotics was observed . ESBL genes are plasmids- and transposons- mediated, as such, can be spread easily to other species of bacteria. Resistance of ESBL- producing bacteria to the β-lactam antibiotics is a continuing cause of public health problems , it is increasingly being observed in community and nosocomial acquired infections. Detection and identification of these ESBLs in the laboratory is of prime importance for the selection of appropriate antibiotics to be used in the treatment of infections caused by ESBL- producing bacteria. The aim of this review is to explain in detail , several phenotypic methods used in the detection and confirmation of extended spectrum β lactamases. Keywords: Antibiotic resistance, ESBL, bacteria, phenotypic metho
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