371 research outputs found

    The international implications of Canada\u27s CANCOM policy a historical/critical analysis.

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    Dept. of Communication Studies. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1989 .L694. Source: Masters Abstracts International, Volume: 40-07, page: . Thesis (M.A.)--University of Windsor (Canada), 1989

    Data Fusion-Based Predictive Beamforming for Downlink UAV-Assisted Massive MIMO Communication

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    In this letter, we propose a data fusion-based predictive beamforming scheme for unmanned aerial vehicle (UAV)-assisted massive multiple-input multiple-output (MIMO) communication, which involves a base station and UAV, each equipped with a massive MIMO array. We consider aircraft dynamics to track and predict the trajectory and orientation of the UAV. To improve communication and tracking performance, we propose a novel fusion of the channel and motion data of the UAV using an extended Kalman filter (EKF). Simulation results demonstrate that the proposed scheme can improve overall spectral efficiency, particularly when the number of antennas is large

    IL-15 and PIM kinases direct the metabolic programming of intestinal intraepithelial lymphocytes

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    Intraepithelial lymphocytes (IEL) respond to IL-15 complexed with IL-15Ra but how this intrinsically affects IEL is unclear. Here the authors use proteomics analyses of the main mouse IEL subsets and identify PIM kinases as essential for IEL proliferation, metabolism and effector function downstream of IL-15

    Aggregate distributional cost-effectiveness analysis of health technologies

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    Background Health inequalities can be partially addressed through the range of treatments funded by health systems. However, whilst health technology assessment agencies assess the overall balance of health benefits and costs, no quantitative assessment of health inequality impact is consistently undertaken. Methods The inequality impact of technologies recommended under the NICE single technology appraisal process from 2012-2014 is assessed using an aggregate distributional cost-effectiveness framework. Data on health benefits, costs and patient populations are extracted from the NICE website. Benefits for each technology are distributed to social groups using the observed socioeconomic distribution of hospital utilisation for the targeted disease. Inequality measures and estimates of cost-effectiveness are compared using the health inequality impact plane and combined using social welfare indices. Results Twenty-seven interventions are evaluated. 14 interventions are estimated to increase population health and reduce health inequality, eight to reduce population health and increase health inequality, and five to increase health and increase health inequality. Among the latter five, social welfare analysis, using inequality aversion parameters reflecting high concern for inequality, indicated that the health gain outweighs the negative health inequality impact. Conclusions The methods proposed offer a way of estimating the health inequality impacts of new health technologies. The methods do not allow for differences in technology-specific utilisation and health benefits, but require less resources and data than conducting full distributional cost-effectiveness analysis. They can provide useful quantitative information to help policy makers consider how far new technologies are likely to reduce or increase health inequalities

    Identifying Opportunities for Aligning Production and Consumption in the U.S. Fisheries by Considering Seasonality

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    Seasonality is a natural feature of wild caught fisheries that introduces variation in food supply, and which often is amplified by fisheries management systems. Seasonal timing of landings patterns and linkages to consumption patterns can have a potentially strong impact on income for coastal communities as well as import patterns. This study characterizes the relationship between seasonality in seafood production and consumption in the United States by analyzing monthly domestic fisheries landings and imports and retail sales of farmed and wild seafood from 2017 to 2019. Analyses were conducted for total seafood sales, by product form, by species group, and by region of the United States. The data reveal strong seasonal increases in consumption around December and March. Seasonal increases in consumption in Spring and Summer occurred in parallel with domestic fishing production. Domestic landings vary by region, but most regions have peak fishing seasons between May and October. Alaska has the largest commercial fishery in the United States and seasonal peaks in Alaska (July/August, February/March) strongly influence seasonality in national landings. Misalignment between domestic production and consumption in some seasons and species groups creates opportunities for imports to supplement demand and lost opportunities for domestic producers.publishedVersio

    Deficiencies in the scientific assessment of the Carmichael Mine impacts to the Doongmabulla Springs

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    This work is made available with the Creative Commons, Attribution License CC-BY https://creativecommons.org/licenses/by/4.0/ Copyright (2019) Flinders University.Key points: (1) Adani appears likely to have significantly under-estimated future impacts to the Doongmabulla Springs Complex (DSC) arising from the Carmichael Mine. (2) Should the Carmichael Mine cause springs within the DSC to cease flowing, this impact may be irreversible. (3) The safeguard against DSC impacts proposed by Adani, namely Adaptive Management, is unsuitable and unlikely to protect the DSC from severe degradation or cessation of flow. (4) Possible cumulative impacts to the DSC from other mining activities in the Galilee Basin have not been adequately considered. We conclude that the DSC face a legitimate threat of extinction due to the Carmichael Mine project

    Connecting urban food plans to the countryside: leveraging Denver's food vision to explore meaningful rural-urban linkages

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    Includes bibliographical references (pages 14-18).Cities are increasingly turning to food policy plans to support goals related to food access, food security, the environment, and economic development. This paper investigates ways that rural farmers, communities, and economies can both support and be supported by metropolitan food-focused initiatives. Specifically, our research question asked what opportunities and barriers exist to developing food policies that support urban food goals, particularly related to local procurement, as well as rural economic development. To address this question, we described and analyzed a meeting of urban stakeholders and larger-scale rural producers related to Colorado’s Denver Food Vision and Plan. We documented and explored “findings” gleaned from a supply chain diagraming and data compilation process that were then used to inform an event that brought together diverse supply chain partners. Three findings stand out. First, facilitating dialog between urban food policymakers and rural producers to understand potential tensions, mitigate such tensions, and capitalize on opportunities is essential. Second, perceptions and expectations surrounding “good food” are nuanced—a timely finding given the number of preferred procurement programs emerging across the county. Third, critical evaluation is needed across a diverse set of value chain strategies (e.g., conventional and alternative distribution) if food policy intends to support heterogeneous producers, their communities, and urban food policy goals
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