71,248 research outputs found

    Letters supporting Appalachian National Park movement

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    This 6-page series of correspondence between C. P. Ambler, J. M. Greer, H. M. Branson, and J. T. Wilder discusses the relationship Appalachian National Park Association has with the Knoxville Chamber of Commerce. Formed in 1899 for the purpose of promoting the idea of a national park in the eastern U.S, the Appalachian National Park Association grew out of work with the Asheville Board of Trade. Although in somewhat of a rivalry, both states eventually cooperated to acquire land and secure funding for the Great Smoky Mountains National Park

    Scarborough [cartographic material] : will be sold by auction on Saturday Dec. 4th at 11 o'clock at Buchanan's new buildings, corner shop Hunter & Newcomen Sts. Newcastle /

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    Sales plan for land in Scarborough, New South Wales.; At head of title: Torrens title.; "Terms: 1/4 cash balance at 6,12&18 months, without interest."; "John M. White.C.E., surveyor, Maitland."; Includes ill. of a view of Cooronbong Station, 1 1/4 miles from Scarborough.; Includes text on verso.; Also available in an electronic version via the internet at: http://nla.gov.au/nla.map-lfsp2555

    Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′

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    First evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)

    Letter from Carl Hayden to M. J. Riordan

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    Letter from Carl Hayden to M. J. Riordan expressing his support for Coconino County in turning over the Bright Angel Trail to the federal government

    Characterization of supercooled liquid Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>5</sub> and its crystallization by ultrafast-heating calorimetry

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    Differential scanning calorimetry (DSC) is widely used to study the stability of amorphous solids, characterizing the kinetics of crystallization close to the glass-transition temperature Tg. We apply ultrafast DSC to the phase-change material Ge2Sb2Te5 (GST) and show that if the range of heating rates is extended to more than 104 K s-1, the analysis can cover a wider temperature range, up to the point where the crystal growth rate approaches its maximum. The growth rates that can be characterized are some four orders of magnitude higher than in conventional DSC, reaching values relevant for the application of GST as a data-storage medium. The kinetic coefficient for crystal growth has a strongly non-Arrhenius temperature dependence, revealing that supercooled liquid GST has a high fragility. Near Tg there is evidence for decoupling of the crystal-growth kinetics from viscous flow, matching the behaviour for a fragile liquid suggested by studies on oxide and organic systems

    Explaining and Justifying Recommendations in an Agriculture Decision Support System

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    Greer, J. E., Sarah Falk, K. J. Greer, and M. J. Bentham. 1993. Explaining and justifying recommendations in an agriculture decision support system. Comput. Electron. Agric. Agricultural decision support systems are not being readily accepted by all potential users. This paper discusses the reasons for this lack of user acceptance and proposes a method for rectifying this problem. The method is based on the premise that good explanations increase user understanding and acceptance of a system. The method involves building a hybrid decision support system which first interprets the output of a quantitative simulation model and then constructs explanations, which are in turn adapted to the particular user. An initial prototype of the system, known as EXPLAIN, is presented. Introduction Decision support systems (DSS) are computer programs, which encode expert knowledge that assists users in making management decisions. Expert knowledge is collected from many sources, including human expe..

    Letter from M. J. Riordan, Arizona Lumber and Timber Company, to Carl Hayden

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    Letter from M. J. Riordan to Carl Hayden expressing his opposition to the federal government's takeover of Bright Angel Trail
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