Schema architecture and their relationships to transaction processing in distributed database systems

We discuss the different types of schema architectures which could be supported by distributed database systems, making a clear distinction between logical, physical, and federated distribution. We elaborate on the additional mapping information required in architecture based on logical distribution in order to support retrieval as well as update operations. We illustrate the problems in schema integration and data integration in multidatabase systems and discuss their impact on query processing. Finally, we discuss different issues relevant to the cooperation (or noncooperation) of local database systems in a heterogeneous multidatabase system and their relationship to the schema architecture and transaction processing

Wind flow through shrouded wind turbines

Wall pressure distributions and cross section flow distribution on wind turbine shroud designs, determined through static pressure measurements, were quantified in order to determine the most ideal design that could increase power output and reduce the radar cross section. Engineering and Expeditionary Warfare Center (EXWC) Port Hueneme provided four shroud designs in a 1:160 scale for analysis, including a model with a free-spinning wind turbine incorporated. These models were studied in the Naval Postgraduate School MAE wind tunnel. Tunnel velocity and model angle were varied. Additionally, static wall pressures and cross section flow were studied with the addition of a screen. The pressure measurements were collected by a Scanivalve pressure scanner from up to 90 taps drilled into the models at various locations as well as through an Aeroflow 5-hole probe, which took various measurements at multiple planes of each model. Flow visualization tests, including oil and tufts, were also conducted to help determine the aerodynamic efficiency of each model and identify any sign of flow separation. These studies provided a good evaluation of the efficiency of these models from a fluid flow perspective. While none of the models proved ideal, certain attributes, most importantly the geometry of a wind lens or flange on the shroud and a gradually diverging shape, proved to accelerate the flow through the duct.http://archive.org/details/windflowthroughs1094553045Lieutenant, United States NavyApproved for public release; distribution is unlimited

Effects of post-discharge counseling and medication utilization on short and long-term smoking cessation among hospitalized patients

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.Numerous studies have tested the effect of multicomponent post-discharge smoking cessation interventions on post-discharge smoking cessation, and many are effective. However, little is known regarding the relative efficacy of the different intervention components on short or long-term cessation. The present study is a secondary analysis (n = 984) of a randomized controlled trial for hospitalized smokers that took place at two large hospitals in Kansas from 2011 to 2014. All study participants were offered post-discharge quitline services. Pharmacotherapy was recommended during bedside tobacco treatment. The study outcomes were self-reported cessation at 1-month and biochemically verified cessation at 6-months post-randomization. During the post-discharge period, 69% of participants completed at least one quitline call and 28% of participants reported using cessation pharmacotherapy. After controlling for known predictors of cessation among hospitalized smokers, both the number of total quitline calls completed post-discharge and use of cessation pharmacotherapy post-discharge were predictive of cessation at 1-month. After accounting for predictors of cessation and quitting at 1-month, total post-discharge quitline calls was associated with cessation at 6-months (OR [95% CI] = 1.23 [1.12, 1.35], p < 0.001) while post-discharge cessation pharmacotherapy use was not. The results suggest that both engagement in quitline services and use pharmacotherapy independently facilitate cessation beyond the influence of known clinical characteristics associated with cessation. Over the longer term, the effect of engaging in quitline services persists while the effect of pharmacotherapy diminishes. To optimize outcomes, future research should investigate methods to increase utilization of medications and promote sustained counseling engagement in order to sustain the effects of treatment during the post-discharge period.NIH National Heart, Lung, and Blood Institute (U01 HL105232

Ovo: um alimento nutritivo, saudável e delicioso.

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Estimativa da emissão de gases de efeito estufa na produção de frangos de corte nos sistemas convencional e dark house.

bitstream/item/78905/1/Comunicado-504.pdfProjeto/Plano de Ação: 01.10.06.001