1,721,801 research outputs found
On Absolute And Relative Motions In Physics
No full textThe authors present the Newtonian definitions of absolute and relative motion. The idea is defended that only relative motions of matter relative to matter can be detected and lead to measurable effects. Phenomena is analyzed depending on velocity and acceleration in electromagnetism and mechanics.64812Assis, A.K.T., (1994) Weber's Electrodynamics, , Kluwer, Dordrecht, ISBN: 0-7923-3137-0Assis, A.K.T., (1999) Relational Mechanics, , Apeiron, Montreal, ISBN: 0-9683689-2-1Assis, A.K.T., Thober, D.S., Unipolar induction and Weber's electrodynamics (1994) Frontiers of Fundamental Physics, pp. 409-414. , M. Barone and F. Selleri (editors), (Plenum Press, New York)Bueno, M.D.A., Assis, A.K.T., (2001) Inductance and Force Calculations in Electrical Circuits, , Nova Science Publishers, Huntington, New York, ISBN: 1-56072-917-1Galeczki, G., The limit speed and Weber's potential (1993) Physics Essays, 6, p. 86Galeczki, G., Marquardt, P., Über die longitudinalen Ampèreschen Kräfte und Webers Elektro-dynamik (1995) Fusion, 16, p. 15Guala-Valverde, J., Gravitational Mutual Energy in Weber-type Mechanics (1998) Physics Essays, 11, pp. 164-165Guala-Valverde, J., Inertial Mass in Mach-Weber-Assis Theory (1999) Apeiron, 6, pp. 202-204Guala-Valverde, J., (1999) Inercia y Gravitacion, , Fundacion Julio Palacios, Neuquén, with the collaboration of J. Tramaglia and R. Rapacioli, ISBN: 987-97703-0-7Guala-Valverde, J., Mazzoni, P., The Unipolar Dynamotor: A Genuine Relational Engine (2001) Apeiron, 8, pp. 41-52Guala-Valverde, J., Mazzoni, P., Achilles, R., The Homopolar Motor: A True Relativistic Engine (2002) American Journal of Physics, 70, pp. 1052-1055Guala-Valverde, J., Spinning Magnets and Relativity: Jehle vs. Bartlett (2002) Physica Scripta, 66, pp. 252-253Kelly, A.G., Experiments on Unipolar Induction (1999) Physics Essays, 12, pp. 372-382Kinzer, E.T., Fukai, J., Weber's Force and Maxwell's Equations (1996) Foundations of Physics Letters, 9, pp. 457-461Mach, E., (1960) The Science of Mechanics - A Critical and Historical Account of Its Development, , Open Court, La SalleMikhailov, V.F., The Action of an Electrostatic Potential on the Electron Mass (1999) Annales de la Fondation Louis de Broglie, 24, pp. 161-169Mikhailov, V.F., Influence of an Electrostatic Potential on the Inertial Electron Mass (2001) Annales de la Fondation Louis de Broglie, 26, pp. 33-38Newton, I., (1934) Mathematical Principles of Natural Philosophy, , University of California Press, BerkeleyPhipps Jr., T.E., Derivation of a Modernized Weber Force Law (1992) Physics Essays, 5, pp. 425-428Sokolskii, A.G., Sadovnikov, A.A., Lagrangian Solutions for Weber's Law of Attraction (1987) Soviet Astronomy (Astronomical Journal), 31, pp. 90-93Wesley, J.P., Weber Electrodynamics, Part I: General Theory, Steady Current Effects (1999) Fondations of Physics Letters, 3, pp. 443-46
Mass In Relational Mechanics
No full textWe clarify a misunderstanding that appeared in the literature.703/04/15131132Assis, A.K.T., (1998) Mecânica Relacional, , Editora do Centro de Lógica, Epistemologia e História da Ciência, Campinas, Brasil. ISBN: 85-86497-01-0Assis, A.K.T., (1999) Relational Mechanics, , Apeiron, Montreal, Canada. ISBN: 0-9683689-2-1Ghose, J.K., Kumar, P., Gravitational mass defect in general relativity (1976) Physical Review D, 13, pp. 2736-2738Guala-Valverde, J., Gravitational redshift revisited (1992) Galilean Electrodynamics, 3, p. 58Guala-Valverde, J., Inertial mass in Mach-Weber-Assis theory (1999) Apeiron, 6, pp. 202-204Guala-Valverde, J., (1999) Inercia Y Gravitacion - La Verdadera Influencia de Los Astros, , Fundacion Julio Palacios, Neuquén, Argentina, with collaboration of J. Tramaglia and R. Rapacioli. ISBN: 987-97703-0-7Palacios, J., (1964) Análisis Dimensional, , Espasa-Calpe, Madrid, 2nd ed(1960) Analyse Dimensionnelle, , Gauthier-Villar, Paris(1964) Dimensional Analysis, , McMillan, LondonSchrödinger, E., Die erfüllbarkeit der relativitätsforderung in der klassischen mechanik (1925) Annalen der Physik, 77, pp. 325-336Schrödinger, E., The possibility of fulfillment of the relativity requirement in classical mechanics (1995) Mach's Principle - From Newton's Bucket to Quantum Gravity, pp. 147-158. , J. B. Barbour and H. Pfister, editors, Birkhäuser, Bosto
Recensión del libro: Valverde, J. (coord.) (2015). El Proyecto de Educación Digital en un centro educativo. Guía para su elaboración y desarrollo. Madrid: Síntesis
Full text linkRecensión del libro: Valverde, J. (coord.) (2015). El Proyecto de Educación Digital en un centro educativo. Guía para su elaboración y desarrollo. Madrid: Síntesi
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Variations on the Author
Full text link“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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe 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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