103,908 research outputs found
A Vaidya-type generalization of Kerr spacetime
No full textA new Vaidya-type generalization of Kerr spacetime is constructed by requiring the Kerr mass and angular momentum per unit mass to depend upon a variable which has a simple geometrical origin. The matter distribution introduced in this way radiates mass and angular momentum at future null infinity. The Vaidya generalization of the Schwarzschild spacetime is a special case of the newly found solution
sj-docx-1-pss-10.1177_09567976211007463 – Supplemental material for Who Are You? The Study of Personality in Patients With Anterograde Amnesia
No full textSupplemental material, sj-docx-1-pss-10.1177_09567976211007463 for Who Are You? The Study of Personality in Patients With Anterograde Amnesia by McKenna M. Garland, Jatin G. Vaidya, Daniel Tranel, David Watson and Justin S. Feinstein in Psychological Science</p
Statistical entropies of scalar and spinor fields in Vaidya-de Sitter space-time computed by the thin-layer method
No full textThe brick-wall method based on thermal equilibrium at a large scale cannot be applied to cases out of equilibrium, such as nonstationary space-time with two horizons, for example, Vaidya-de Sitter space-time. We improve the brick-wall method and propose a thin-layer method. The entropies of scalar and spinor fields in Vaidya-de Sitter space-time are calculated by the thin-layer method. The condition of local equilibrium near the two horizons is used as a working postulate and is maintained for a black hole which evaporates slowly enough and whose mass is far greater than the Planck scale. There are two horizons in Vaidya-de Sitter space-time. We think that the total entropy is mainly attributed to the two layers near the two horizons. The entropy of a scalar field in Vaidya-de Sitter space-time is a linear sum of the area of the black hole horizon and that of the cosmological horizon. Thinking of Dirac equations in the Newman-Penrose formalism, there are four components of the wave functions F 1, F 2, G 1, and G 2. The total entropy is summed up from the entropies corresponding to the four components. On the same condition of the scalar field, the resulting entropy is 7/2 times that of the scalar field, and is also a linear sum of the area of the black hole horizon and that of the cosmological horizon. The difference from the stationary black hole is that the result relies on time-dependent cutoffs. ©2001 The American Physical Society
Impacts of roads on bee movement
No full textThis project investigated the effect of roads on the movement of bees and their role as pollen vectors. We used fluorescent pigment as a pollen analog to examine whether roads influenced pigment transfer in two species of plants, *Monarda fistulosa* and *Coreopsis verticillata*, and what characteristics of roads mediated this effect. Field work took place in and around Ann Arbor, MI in July-Aug 2020.
Associated publications:
Fitch G & Vaidya C. (2021) Roads pose a significant barrier to bee movement, mediated by road size, traffic, and bee identity. Journal of Applied Ecology
Impacts of roads on bee movement
No full textThis project investigated the effect of roads on the movement of bees and their role as pollen vectors. We used fluorescent pigment as a pollen analog to examine whether roads influenced pigment transfer in two species of plants, *Monarda fistulosa* and *Coreopsis verticillata*, and what characteristics of roads mediated this effect. Field work took place in and around Ann Arbor, MI in July-Aug 2020.
Associated publications:
Fitch G & Vaidya C. (2021) Roads pose a significant barrier to bee movement, mediated by road size, traffic, and bee identity. Journal of Applied Ecology
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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