12,516 research outputs found

    Preface: A Nested Logit Model of Recreational Fishing Demand in Alaska

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    Public Economics, Research Methods/ Statistical Methods,

    A radar data processing and enhancement system

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    This report describes the space position data processing system of the NASA Western Aeronautical Test Range. The system is installed at the Dryden Flight Research Facility of NASA Ames Research Center. This operational radar data system (RADATS) provides simultaneous data processing for multiple data inputs and tracking and antenna pointing outputs while performing real-time monitoring, control, and data enhancement functions. Experience in support of the space shuttle and aeronautical flight research missions is described, as well as the automated calibration and configuration functions of the system

    Convergence Of The Iteration Process In The Solution Of Algebraic And Transcendental Equations

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    The science of algebra arose in an effort to solve equations. Since the main objects in algebra have been the discussion of equalities and the transformation of forms into simpler equivalent ones, that science may well be called the Science of Equations. The solution of an equation containing one unknown quantity consists of the determination of its value or values, these being called roots. An algebraic equation of degree n has n roots, while transcendental equations have an infinite number of roots. There has existed for years the problem of finding values, as exact as possible, or as close as one wishes of the roots. It is the object of the study to show the convergence of the iteration process and methods of inducing convergence in numerical analysis. The use of a computer in testing convergence of algebraic and transcendental equations is also shown. The definitions of convergence and divergence are now commonplace in elementary analysis. The ideas were familiar to mathematicians before Newton and leibuix; and all the great mathematicians of the seventeenth and eighteen centuries. Bo Definitions. The following terms and expressions will he used throughout this paper. Their definitions are given here. Definition 1: Transcendental equation - An equation for which there is no general method of stating its roots in terms of its coefficients. (Example: a ex + b cos = + 0) Definition 1.1: Iteration - The process of repeating to give successive approximations. Definition 1.2: Convergence - lim Sn = U : Sn approaches the limit U. The value of the series is the number U (sometimes called the sum)
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