299,905 research outputs found
Senior Recital: Kevin O. White, baritone
No full textKennesaw State University School of Music presents Senior Recital: Kevin O. White, baritone. Mr. White is in the voice studio of Dr. Oral Moses.https://digitalcommons.kennesaw.edu/musicprograms/1775/thumbnail.jp
An improved thick-film piezoelectric material by powder blending and enhanced processing parameters
No full textThis paper details improvements of the d33 coefficient for thick-film lead zirconate titanate (PZT) layers. In particular, the effect of blending ball and attritor milled powders has been investigated. Mathematical modeling of the film structure has produced initial experimental values for powder combination percentages. A range of paste formulations between 8:1 and 2:1 ball to attritor milled PZT powders by weight have been mixed into a screen-printable paste. Each paste contains 10% by weight of lead borosilicate glass and an appropriate quantity of solvent to formulate a screen printable thixotropic paste. A d33 of 63.5 pC/N was obtained with a combination of 4:1 ball milled to attritor milled powder by weight. The improved paste combines the high d33 values of ball and the consistency of attritor milled powder. The measured d33 coefficient was further improved to 131 pC/N by increasing the furnace firing pro-file to 100
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Letter from O. T. Rose, GMAC, Birmingham, Alabama, to Willie T. White, University, Alabama, circa 1931
No full textVariations 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
Interview with Charles White
No full textDr. Charles White, Professor Emeritus of History at Portland State University, was interviewed by Michael O\u27Rourke at PSU on March 16, 2011.https://pdxscholar.library.pdx.edu/rememberpsu_oralhist/1011/thumbnail.jp
C/O white dwarfs of very low mass: 0.33-0.5 Mo
No full textThe standard lower limit for the mass of white dwarfs (WDs) with a C/O core is roughly 0.5 Modot. In the present work we investigate the possibility to form C/O WDs with mass as low as 0.33 Modot. Both the pre-WD and the cooling evolution of such nonstandard models are described
White dwarfs of very low mass with C/O core
No full textIt is commonly believed that white dwarfs (WDs) with a carbon-oxygen core must have mass larger than about 0.5Msolar. We will discuss a possible scenario for the formation of C/O WDs with mass as low as 0.33Msolar. A description of both the pre-WD and the cooling evolution of such models of very low mass will be presented
White Dwarfs In Ngc6397 And M4: Constraints On The Physics Of Crystallization
No full textWe explore the physics of crystallization in the dense Coulomb plasma of the deep interiors of white dwarf stars using the color-magnitude diagram and luminosity function constructed from Hubble Space Telescope photometry of the globular cluster M 4 and compare it with our results for proper motion cleaned Hubble Space Telescope photometry of the globular cluster NGC 6397. We demonstrate that the data are consistent with a binary mixture of carbon and oxygen crystallizing at a value of Gamma higher than the theoretical value for a One Component Plasma (OCP). We show that this result is in line with the latest Molecular Dynamics simulations for binary mixtures of C/O. We discuss implications for future work.Astronom
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