1,721,112 research outputs found
ASSMANN, J., CACCIARI, M., DUQUE, F., PONS, J. y VELA, A. (2020). La palabra que falta. El dios indecible de Moisés y Aarón, de Schönberg. Madrid: Ediciones CBA.
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ASSMANN, J., CACCIARI, M., DUQUE, F., PONS, J. y VELA, A. (2020). La palabra que falta. El dios indecible de Moisés y Aarón, de Schönberg. Madrid: Ediciones CBA
ASSMANN, J., CACCIARI, M., DUQUE, F., PONS, J. y VELA, A. (2020). La palabra que falta. El dios indecible de Moisés y Aarón, de Schönberg. Madrid: Ediciones CBA.
Full text linkReseña de:
ASSMANN, J., CACCIARI, M., DUQUE, F., PONS, J. y VELA, A. (2020). La palabra que falta. El dios indecible de Moisés y Aarón, de Schönberg. Madrid: Ediciones CBA
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
Experimental and theoretical studies into mechanisms of ultrafast UV-induced decarboxylation in organic peroxide decomposition.
No full textReal-time probing of intramolecular vibrational energy redistribution and intermolecular vibrational energy transfer of selectively excited CH2I2 molecules in solution
No full textCompetition between intramolecular vibrational energy redistribution (IVR) and intermolecular vibrational energy transfer (VET) of excited methylene iodide (CH2I2) in solution has been measured in real time. After excitation of the C-H- stretch overtone and C-H- stretch containing combination bands of CH2I2 between 1.7 and 2.4 mum an increase followed by a decrease in the transient electronic absorption at 400 nm has been monitored. The transient absorption has been attributed to vibrational energy flow from the initially excited degrees of freedom to vibrational states with larger Franck-Condon (FC) factors for the electronic transition (long wavelength wing) and energy loss due to energy transfer to the solvent. A model based upon the dependence of the electronic absorption on the internal energy of CH2I2 has been used to determine the times for intramolecular vibrational energy redistribution and intermolecular energy transfer to the solvent. in the simplest version of our model the internal energy of the molecule probed by the population of the FC-active modes rises and decays exponentially on a picosecond (ps) time scale, which reflects the initial intramolecular vibrational energy redistribution and the subsequent energy transfer to the solvent. This simple approach was able to accurately describe the measured transient absorption for all solvents and excitation wavelengths. Overall time constants for IVR have been found to be on the order of 9-10 ps, almost independent of the excitation wavelength, the excited modes, and the solvent. In contrast, energy transfer to the solvent takes significantly longer. Overall time constants for VET have been determined in the range between 60 and 120 ps depending on the solvent, the excitation energy, but not on the mode which was initially excited
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
Experimental and theoretical studies into mechanisms of ultrafast UV-induced decarboxylation in organic peroxide decomposition.
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