105,029 research outputs found
Letter from James A. Johnson to N. G. Taylor with letter from M. C. Dougherty, 1869
No full textEnclosed correspondences and vouchers of M. C. Dougherty, for services on Mendocino Reservation
Letter from Thos. J. Henley to G. W. Manypenny with a letter from M. C. Dougherty, 1855
No full textEnclosed report of M. C. Dougherty, Special Agent for the Indians on Russian River
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
Letter re: Frank Dougherty
No full textLetter from Amon Carter to Will Rogers concerning the introduction of Frank Dougherty, an Arizona ranch owne
Telegram re: Frank Dougherty
No full textTelegram from Amon Carter to Will Rogers regarding the letter of introduction to Frank Dougherty and Carter's request for Rogers' to interview Doughert
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
Bibliographie Hilarion G. Petzold 1958 – 2009 mit Anhang als Einführung
No full textDieses Archiv enthält die Gesamtbibliographie der Werke des Autors nebst einiger Texte „Über H. G. Petzold“ im Schlussteil der Bibliographie sowie einen Anhang mit einer Einführung in die Architektur des Werkes in seinem wissenslogischen Aufbau als Ausarbeitung seines „Tree of Science Modells“ (2007).This archive contains the complete bibliography of the author and some texts about H. G. Petzold, moreover an epilogue with an introduction to the architecture of the works in its epistemological structure and composition and as an elaborations of Petzold’s „Tree of Science Modell (2007).https://www.fpi-publikation.de/polyloge/01-2009-petzold-h-g-gesamtbibliographie-h-g-petzold-1958-2009-updating-november2009/peerReviewedpublishedVersio
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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3346: Samuel G. Freedman, author, 2013
No full textPhotograph of author Samuel G. Freedman, at NT Daily Slash meeting in the Mayborn School of Journalism at UNT
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