6,389 research outputs found

    Slaying the dragon: mythmaking in the biblical tradition

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    Reviewed Book: Batto, Bernard F. Slaying the dragon: mythmaking in the biblical tradition. Louisville, Ky: Westminster/John Knox Press, 1992

    Indian Horse

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    Title: Indian Horse. Author: By Richard Wagamese. Publisher: Vancouver: Douglas and MacIntyre, 2012. ISBN: 978155365402

    A Response to Dean Herbert W. Titus

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    Horizontal branch stars, and galactic and magellanic cloud globular clusters

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    Seven blue horizontal branch stars in the field were observed and a few HB stars were isolated in globular clusters. Energy distributions are compared to assess possible differences and also used in comparison with model atmospheres. Observed energy distributions of HB stars in NGC 6397 are used to estimate the total number of HB stars which produced the integrated fluxes as observed by ANS. Preliminary results are given for colors of globular clusters observed in the Magellanic Clouds and for their extent, based on the Washburn IUE extraction

    RISK MANAGEMENT POTENTIAL OF PRECISION FARMING TECHNOLOGIES

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    Initial ideas on risk management uses of precision agricultural technology focused on site-specific treatment of problem areas to reduce the probability of low yields and returns. Recent discussions deal with sensor and remote-sensing information to improve marketing and "as applied maps" as trace-back mechanisms to manage liability. A theoretical model is presented that suggests that there are plausible circumstances under which precision farming can reduce temporal yield variability. Empirical evidence from an on-farm trial of site-specific P&K management in the Eastern Cornbelt supports the hypothesis that precision farming can have risk-reducing benefits.food safety, GIS, GPS, crop insurance, marketing, precision farming, site specific management, risk, Research and Development/Tech Change/Emerging Technologies, Risk and Uncertainty,

    THE DISTRIBUTIONAL IMPACT OF 1981 AND 1982 FEDERAL INCOME TAX LEGISLATION: WHICH FARMERS BENEFIT?

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    Simulation was used to analyze the distribution of benefits from the 1981 and 1982 federal income tax legislation for farm types that exhibit various tax characteristics. The results indicate that distributional effects are largely attributable to the reduced progressivity of the tax rate schedule. The largest farms benefited relative to the smaller farms of all farm types. Intensive livestock farms and producers of perennial crops experience additional benefits relative to other farm types primarily because of the large reduction in useful life for tax purposes of specialized livestock facilities, orchards, and vineyards.Agricultural Finance, Public Economics,

    PRECISION AGRICULTURE: ECONOMICS OF NITROGEN MANAGEMENT IN CORN USING SITE-SPECIFIC CROP RESPONSE ESTIMATES FROM A SPATIAL REGRESSION MODEL

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    Adapting variable rate technology (VRT) to Argentine conditions requires methods that use inexpensive information and that focus on the inputs and variability common to Argentine maize and soybean growing areas. The goal of this study is to determine if spatial regression analysis of yield monitor data can be used to estimate the site-specific crop Nitrogen (N) response needed to fine tune variable rate fertilizer strategies. N has been chosen as the focus of this study because it is the most commonly used fertilizer by corn farmers in Argentina. The methodology uses yield monitor data from on-farm trials to estimate site-specific crop response functions. The design involves a strip trial with a uniform N rate along the strip and a randomized complete block design, with regression estimation of N response curves by landscape position. Spatial autocorrelation and spatial heterogeneity are taken into account using a spatial error model and a groupwise heteroskedasticity model. A partial budget is used to calculate uniform rate and VRT returns. First year data indicate that N response differs significantly by landscape position, and that VRA for N may be modestly profitable on some locations depending on the VRT fee level, compared to a uniform rate of urea of 80kg ha-1. A more complete analysis will pool data over many farms and several years to determine if reliable differences exist in N response by landscape position or other type of management zone. The study is planned for four years. The purpose of this preliminary analysis is to show how spatial regression analysis of yield data could be used to fine tune input use.Crop Production/Industries,

    Non-commutative Gross-Neveu model at large N

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    The non-commutative O(N) Gross-Neveu model is solved in the large N limit in two and three space-time dimensions. The commutative version of the two dimensional model is a renormalizable quantum field theory, both in a coupling constant expansion and an expansion in 1/N. The non-commutative version has a renormalizable coupling constant expansion where ultraviolet divergences can be removed by adjusting counterterms to each order. On the other hand, in a previous work, we showed that the non-commutative theory is not renormalizable in the large N expansion. This is argued to be due to a combined effect of asymptotic freedom and the ultraviolet/infrared mixing that occurs in a non-commutative field theory. In the present paper we will elaborate on this result and extend it to study the large N limit of the three dimensional Gross-Neveu model. We shall see that the large N limit of the three dimensional theory is also trivial when the ultraviolet cutoff is removed.Comment: 23 page
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