50,167 research outputs found

    Analysis of an F.M. Discriminator with Fading Signal plus Additive Gaussian Noise

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    Fading signal plus additive Gaussian noise applied to frequency modulation discriminator for determining fading effects on threshol

    Extracting Spooky-activation-at-a-distance from Considerations of Entanglement

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    Following an early claim by Nelson & McEvoy \cite{Nelson:McEvoy:2007} suggesting that word associations can display `spooky action at a distance behaviour', a serious investigation of the potentially quantum nature of such associations is currently underway. This paper presents a simple quantum model of a word association system. It is shown that a quantum model of word entanglement can recover aspects of both the Spreading Activation equation and the Spooky-activation-at-a-distance equation, both of which are used to model the activation level of words in human memory.Comment: 13 pages, 2 figures; To appear in Proceedings of the Third Quantum Interaction Symposium, Lecture Notes in Artificial Intelligence, vol 5494, Springer, 200

    Symbiotic stars in X-rays III: Suzaku observations

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    We describe the X-ray emission as observed with Suzaku from five symbiotic stars that we selected for deep Suzaku observations after their initial detection with ROSAT, ASCA and Swift. We find that the X-ray spectra of all five sources can be adequately fit with absorbed, optically thin thermal plasma models, with either single- or multi-temperature plasmas. These models are compatible with the X-ray emission originating in the boundary layer between an accretion disk and a white dwarf. The high plasma temperatures of kT >3~>3 keV for all five targets were greater than expected for colliding winds. Based on these high temperatures, as well as previous measurements of UV variability and UV luminosity, and the large amplitude of X-ray flickering in 4 Dra, we conclude that all five sources are accretion-powered through predominantly optically thick boundary layers. Our X-ray data allow us to observe a small, optically thin portion of the emission from these boundary layers. Given the time between previous observations and these observations, we find that the intrinsic X-ray flux and the intervening absorbing column can vary by factors of three or more on a time scale of years. However, the location of the absorber and the relationship between changes in accretion rate and absorption are still elusive.Comment: 14 pages, 3 figures and 3 tables. Accepted to published 04/15/2016. arXiv admin note: substantial text overlap with arXiv:1505.0063

    Extended Water Quality Monitoring of the Lincoln Lake Watershed

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    For seven years, the Lincoln Lake (Moores Creek and Beatty Branch) watershed was monitored for improvements in water quality resulting from agricultural best management practices (BMP) implemented to reduce nutrient transport. During the first three years of monitoring (1991 to 1994), nitrogen transport declined significantly (Edwards et al., 1994, 1996, and 1997) under both base and storm flow conditions. This decline in nitrogen transport was again observed in the three-year period following 1994 (Vendrell et al. 1998). This monitoring effort has demonstrated that water quality bas improved in the Lincoln Lake watershed. However, since the nitrogen transport continued to decline and there was some indication that phosphorus may begin to decline, monitoring was extended for another year (1998)

    Calculations of Branching Ratios for Radiative-Capture, One-Proton, and Two-Neutron Channels in the Fusion Reaction 209^{209}Bi+70^{70}Zn

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    We discuss the possibility of the non-one-neutron emission channels in the cold fusion reaction 70^{70}Zn + 209^{209}Bi to produce the element Z=113. For this purpose, we calculate the evaporation-residue cross sections of one-proton, radiative-capture, and two-neutron emissions relative to the one-neutron emission in the reaction 70^{70}Zn + 209^{209}Bi. To estimate the upper bounds of those quantities, we vary model parameters in the calculations, such as the level-density parameter and the height of the fission barrier. We conclude that the highest possibility is for the 2n reaction channel, and its upper bounds are 2.4% and at most less than 7.9% with unrealistic parameter values, under the actual experimental conditions of [J. Phys. Soc. Jpn. {\bf 73} (2004) 2593].Comment: 6 pages, 4 figure

    Nursing roles and responsibilities in general practice: three case studies.

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    INTRODUCTION: Primary care nursing teams may now comprise registered nurses (usually termed practice nurses), nurse practitioners, physician assistants, enrolled nurses, and primary care practice assistants, clinical assistants, or nursing assistants. There is a need to understand how practitioners in the different roles work with patients in the changed environment. The aim of this study was to describe the different configurations of health professionals' skill-mix in three dissimilar primary care practices, their inter- and intra-professional collaboration and communication, and to explore the potential of expanded nursing scopes and roles to improve patient access. METHODS: Document review, observation and interviews with key stakeholders were used to explore how health practitioners in three practice settings work together, including their delegation, substitution, enhancement and innovation in roles and interdisciplinary interactions in providing patient care. A multiphase integrative, qualitative and skill-mix framework analysis was used to compare findings related to nursing skill-mix across case studies. FINDINGS: Three models of primary care provision, utilising different nursing skill-mix and innovations were apparent. These illustrate considerable flexibility and responsiveness to local need and circumstances. CONCLUSION: Enabling nurses to work to the full extent of their scope, along with some adjustments to the models of care, greater multidisciplinary cooperation and coordination could mitigate future workforce shortages and improve patient access to care.Published onlin

    Cost Benefits of Coccidiosis Prevention in a Feedlot

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    The objective of today\u27s food animal enterprise is to produce a quality product while at the same time providing maximum economic return to the producer. Many factors are involved, including herd health programs, which work to maintain animal health and to decrease economic losses due to disease. A herd health preventive medicine program will increase the costs of production, but it will increase the economic returns if the level of performance is improved
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