26,017 research outputs found

    Global warming and the Galápagos

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    Opportunities With Decay-At-Rest Neutrinos From Decay-In-Flight Neutrino Beams

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    Neutrino beam facilities, like spallation neutron facilities, produce copious quantities of neutrinos from the decay at rest of mesons and muons. The viability of decay-in-flight neutrino beams as sites for decay-at-rest neutrino studies has been investigated by calculating expected low-energy neutrino fluxes from the existing Fermilab NuMI beam facility. Decay-at-rest neutrino production in NuMI is found to be roughly equivalent per megawatt to that of spallation facilities, and is concentrated in the facility's target hall and beam stop regions. Interaction rates in 5 and 60 ton liquid argon detectors at a variety of existing and hypothetical locations along the beamline are found to be comparable to the largest existing decay-at-rest datasets for some channels. The physics implications and experimental challenges of such a measurement are discussed, along with prospects for measurements at targeted facilities along a future Fermilab long-baseline neutrino beam.Comment: 6 pages, 3 figure

    MARKET STRUCTURE AND SPATIAL PRICE DYNAMICS

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    A method was developed with time series models to test hypotheses about the relationship between market structure and spatial price dynamics. Long-run dynamic multipliers measuring the magnitude of lagged adjustments for spatial milled rice prices were calculated from the time series model and used as the dependent variable in a regression model that included a number of factors expected to influence price determination. Results show that price adjustments were slower as regional submarket concentration increased and were faster in the regions with a higher market share. Arkansas, the state with the largest market share, was consistently a price leaderDemand and Price Analysis, Industrial Organization,

    SOME EFFECTS OF RICE QUALITY ON ROUGH RICE PRICES

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    Quality discounts and premiums for rough rice in Texas rice bid/acceptance markets are analyzed. The most important quality factors determining the value of rough rice are head yield and peck. A one percentage point reduction in peck damage raises the price received per hundredweight of rough rice by .13to.13 to .68 across markets and years. Since peck damage can be reduced by controlling the rice stinkbug, evaluation of alternative methods for better control of this pest in Texas rice fields is needed.Demand and Price Analysis,

    NSW councils shake-up: is the endgame near?

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    The Baird government is pressing on with its agenda for restructuring local government across New South Wales and for the Sydney Metropolitan Region in particular. Casting ahead to see what the outcomes might be, the experience of other Australian states and territories is salutary. It appears likely there will be a political price to pay at the next state election due in March 2019. Of more concern is that the reasons for undertaking reform have been lost in the fog of politics – both party-political and state-local
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