Search results for "Bibliographic Databases"
showing 3 items of 3 documents
Measurement of the strong coupling constant using τ decays
1993
The strong coupling constant is determined from the leptonic branching ratios, the lifetime, and the invariant mass distribution of the hadronic final state of the tau lepton, using data accumulated at LEP with the ALEPH detector. The strong coupling constant measurement, alpha(s), (m(tau)2) = 0.330 +/-0.046, evolved to the Z mass, yields alpha(s)(M(Z)2) = 0. 1 18 +/- 0.005. The error includes experimental and theoretical uncertainties, the latter evaluated in the framework of the Shifman, Vainshtein and Zakharov (SVZ) approach. The method allows the non-perturbative contribution to the hadronic decay rate to be determined to be 0.3 +/- 0.5% . RI Perrier, Frederic/A-5953-2011; ANTONELLI, AN…
Recuperación de la información científica en pediatría: una oportunidad para el Índice Médico Español
2004
Las bases de datos bibliográficas internacionales (Medline, Embase, Current Contents, etc.) son una de las principales fuentes de información en medicina. Dada la incompleta cobertura de revistas nacionales en estas bases de datos extranjeras, es importante conocer y utilizar también el Índice Médico Español (IME), pues éste incluye la mayor parte de las revistas biomédicas españolas de carácter científico (básicas, experimentales y clínicas), lo cual proporcionará unas reconocidas ventajas para autores y editores en España.Del total de revistas indexadas en algún momento en IME (461 revistas), las relacionadas con la pediatría constituyen el 5,2 % del total (24 revistas) con un total de 21…
Mexican journals of educational research towards mainstream dissemination of science
2014
The purpose of this study is to analyze the Electronic Journal of Educational Research (REDIE) on its path towards the common manner of scientific dissemination. This research presents the evolution of Mexican policy with regards to the journals, the situation of the Educational Research Mexican journals, and its profundity relating to REDIE. In its evolution, there were three moments that stood out the most: the standardization of quality criteria, the digitalization and open access of the scientific journals, those that came together with REDIE like REDALYC and LATINDEX , and the individual initiatives of those journals that motivated the development of the scientific dissemination in Mex…