33,602 research outputs found

    Maintenance Required: Charter Schooling in Michigan

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    Michigan's charter sector has tremendous potential, but achieving that potential requires significant improvements

    You\u27re Asleep

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    I think On automatic pilot In a commuter plane. Flying at night is the most peaceful thing. These lights are our own Tivoli, A cathedral of sky. Going so deep While floating as if through glass As it forms, is to apprehend How significant smallness can be, Meaning us in this vast cavern, Meaning those spires, Those good window faces—Look—down there in the dark.https://digitalcommons.butler.edu/onearth/1029/thumbnail.jp

    Gravitational Waves in G4v

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    Gravitational coupling of the propagation four-vectors of matter wave functions is formulated in flat space-time. Coupling at the momentum level rather than at the "force-law" level greatly simplifies many calculations. This locally Lorentz-invariant approach (G4v) treats electromagnetic and gravitational coupling on an equal footing. Classical mechanics emerges from the incoherent aggregation of matter wave functions. The theory reproduces, to first order beyond Newton, the standard GR results for Gravity-Probe B, deflection of light by massive bodies, precession of orbits, gravitational red shift, and total gravitational-wave energy radiated by a circular binary system. Its predictions of total radiated energy from highly eccentric Kepler systems are slightly larger than those of similar GR treatments. G4v predictions differ markedly from those of GR for the gravitational-wave radiation patterns from rotating massive systems, and for the LIGO antenna pattern. The predicted antenna patterns have been shown to be highly distinguishable in the case of continuous gravitational-wave sources, and should therefore be testable as data from Advanced LIGO becomes available over the next few years.Comment: 37 pages, 14 figure

    The Truth About Boys and Girls

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    On many measures American boys are achieving more than ever, but girls have improved their performance even faster. A careful look at the evidence shows the boy crisis hype is overblown and benefits neither boys nor girls

    Information Underload: Florida's Flawed Special-Ed Voucher Program

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    Despite its growing popularity, and the attention paid both by state and national education reformers, Florida's McKay voucher program has yet to prove that it works as either an adequate school-choice or special-education reform measure

    Million Dollar Babies: Why Infants Can't be Hardwired for Success

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    Conventional wisdom that the ages from zero to three are the most important for children's development is based on misinterpretations and misapplications of brain research. The result: negative consequences for parents and public policy

    Intraday stock volatility : a New Zealand perspective : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Business in Finance at Massey University

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    Open-to-open, close-to-close, open-to-close (trading) and close-to-open (non-trading) time periods are examined for dually and non-dually listed stocks in an attempt to explain the volatility patterns which were observed in the New Zealand Stock Exchange. The time period analysed covers the 1997 calendar year. The intraday volatility pattern for the New Zealand Stock Exchange showed similar results to previous studies performed on large exchanges around the world. That is, when the return variances are plotted against the trading time they follow a distinct U-shaped curve, caused by high volatility at the opening and closing of the market. Previous studies have found that the high volatility experienced at the opening of the market results from the long non-trading period prior to the opening. This was examined by analysing the open-to-open to close-to-close variance ratio for both dually and non-dually listed stocks. The explanation that the long non-trading period prior to the opening of the market is a major cause of the volatility experienced at the market opening is not supported by the results found in this study. The results obtained from this study show that the high volatility at the market opening is associated with high capitalised stocks. A low open-to-close (trading) to close-to-open (non-trading) variance ratio was observed in the New Zealand market. Previous research has attributed this low ratio to dually listed stocks continuing to trade during the non-trading overnight period of the domestic market. The findings in this study contradict this explanation and suggest that it is low capitalised stocks that are associated with the low trading to non-trading variance ratio observed in the New Zealand Stock Exchange

    Collective electrodynamics I

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    Standard results of electromagnetic theory are derived from the direct interaction of macroscopic quantum systems; the only assumptions used are the Einstein-deBroglie relations, the discrete nature of charge, the Green's function for the vector potential, and the continuity of the wave function. No reference is needed to Maxwell's equations or to traditional quantum formalism. Correspondence limits based on classical mechanics are shown to be inappropriate
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