89,367 research outputs found
Supercorotating return flow from reconnection in Saturn's magnetotail
No full textDetecting plasma dynamics in Saturn's magnetosphere is essential for understanding energy flow through the system. It has been proposed that both the Dungey and Vasyliunas cycles operate at Saturn, and the competition between these cycles has been debated. We examine data taken by the Cassini spacecraft in Saturn's post-dawn magnetosphere, similar to 17.5 Saturn radii from the planet, and identify an example of return flow from magnetotail reconnection. The flow included water group ions and had elevated ion temperatures (of order 1 keV), consistent with Vasyliunas cycle return flow. The flow was also supercorotating (similar to 200 km s(-1), similar to 120% of corotation), which is highly atypical of Saturn's outer magnetosphere. Our results suggest that return flows are time-variable, and our results concerning Dungey cycle return flows are inconclusive. We propose that supercorotating flows in Saturn's dawn magnetosphere strongly influence the current system that is responsible for the planet's main auroral emission. Citation: Masters, A., M. F. Thomsen, S. V. Badman, C. S. Arridge, D. T. Young, A. J. Coates, and M. K. Dougherty (2011), Supercorotating return flow from reconnection in Saturn's magnetotail, Geophys. Res. Lett., 38, L03103, doi: 10.1029/2010GL046149
F. W. P. Dougherty, Commercium epistolicum J. F. Blumenbachii. Aus einem Briefwechsel des klassischen Zeitalters der Naturgeschichte
No full textErny Pierre. F. W. P. Dougherty, Commercium epistolicum J. F. Blumenbachii. Aus einem Briefwechsel des klassischen Zeitalters der Naturgeschichte. In: L'Homme, 1986, tome 26 n°97-98. L'anthropologie : état des lieux. pp. 387-388
Drs. Samuels, Nelson & Dougherty
No full textLeo T. Samuels, Ph.D. left, first Chair of the Department of Biochemistry; Don H. Nelson, M.D., Professor of Internal Medicine and Chief of the Division of Endocrinology and Metabolism; and Thomas F. Dougherty, Ph.D., Professor of Anatomy. The three men were colleagues in the 1940\u27s and 1950\u27s
Dataset from: Improved multispecies Dougherty collisions
No full textThe Dougherty model Fokker-Planck operator is extended to describe nonlinear full-f collisions between multiple species in plasmas. Simple relations for cross-species primitive moments are developed which obey conservation laws, and reproduce familiar velocity and temperature relaxation rates. This treatment of multispecies Dougherty collisions, valid for arbitrary mass ratios, avoids unphysical temperatures and satisfies the H-theorem unlike an analogous Bhatnagar-Gross-Krook operator. Formulas for both a Cartesian velocity-space and a gyroaveraged operator are provided for use in Vlasov as well as long-wavelength gyrokinetic models. We present an algorithm for the discontinuous Galerkin discretization of this operator, and provide results from relaxation and Landau damping benchmarks
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General Curtis LeMay Oral History Project
No full textInterview with Air Force veteran General Russell E. Dougherty, former commander-in-chief of Strategic Air Command. The interview includes Dougherty's personal experiences with General Curtis LeMay. Dougherty speaks about LeMay's uncanny judgment, organizational talents, and penchant for discipline, as well as his handling of people in his command, and the Soviet military's assessment of LeMay. The interview includes an appendix with "A General's Perspective: Leadership in the Cold War," written by General Russell E. Dougherty
General Curtis LeMay Oral History Project
No full textInterview with Air Force veteran General Russell E. Dougherty, former commander-in-chief of Strategic Air Command. The interview includes Dougherty's personal experiences with General Curtis LeMay. Dougherty speaks about LeMay's uncanny judgment, organizational talents, and penchant for discipline, as well as his handling of people in his command, and the Soviet military's assessment of LeMay. The interview includes an appendix with "A General's Perspective: Leadership in the Cold War," written by General Russell E. Dougherty
Panel I: Publicity Rights and the Constitution: Privacy, Publicity, and the YouTube Phenomenon
No full textModerator: Celestine Richards McConville, Chapman University School of Law Erwin Chemerinsky, Duke University School of Law F. Jay Dougherty, Loyola Law School Dr. John Eastman, Chapman University School of Law Raymond Ku, Case Western Reserve University of La
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Concentration effects in the rheology of cement pastes: Krieger-Dougherty revisited
No full textCement pastes are concentrated suspensions of granular particles in water and their rheology strongly affects the behaviour of all concretes and other cementitious materials. While the rheology of cement pastes has been extensively studied over the last 60 years, leading to the general conclusion that cement particle shape, size and concentration arekey variables, the overwhelming majority of the results to date have been expressed in terms of the effect of water/cement ratio on the measured rheological parameters. While this has been helpful in making empirical progress, a more fundamental approach requires that the concentration be expressed in volumetric terms. A suitable relationship is the Krieger-Dougherty equation but while originally formulated for viscosity it can be used for other rheological parameters such as yield stress. This paper uses a comprehensive series of datasets relating rheology and concentration, which have been collected from the literature over the past 60 years. Each dataset has been converted from the original water/cement ratio form to volume concentration and then fitted to the logarithmic transformation of the Krieger-Dougherty equation by linear regression. The logarithmic form makes it possible to use a linear fit, whereas the untransformed equation diverges to infinity at the maximum packing fraction which makes it difficult to assess the best fit of the data. The paper draws conclusions on the appropriate values of the suspension parameters (maximum packing fraction and intrinsic viscosity) for the different datasets and discusses the implications of the findings in the light of what we know about the properties of cement. It considers the validity of the equation for modelling the rheology of cement pastes andother cementitious materials
This is to certify that Mrs. A. J. Dougherty, of Peoria, Ills is a member of the American flag house and Betsy Ross memorial association ... Issue of 1902.
No full textThe name of Mrs. A. J. Dougherty of Peoria, Ill filled in in manuscript.; On verso, piece 1: Gift Mrs. A. F. Daugherty, Dec. 27th, 1937
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