373 research outputs found
Efficient implementation of a CCA2-secure variant of McEliece using generalized Srivastava codes
No full textIn this paper we present efficient implementations of McEliece variants using quasi-dyadic codes. We provide secure parameters for a classical McEliece encryption scheme based on quasi-dyadic generalized Srivastava codes, and successively convert our scheme to a CCA2-secure protocol in the random oracle model applying the Fujisaki-Okamoto transform. In contrast with all other CCA2-secure code-based cryptosystems that work in the random oracle model, our conversion does not require a constant weight encoding function. We present results for both 128-bit and 80-bit security level, and for the latter we also feature an implementation for an embedded device. © 2012 International Association for Cryptologic Research
The PASTEL catalogue (Soubiran+, 2010)
No full textpastel.dat 30151x202 The catalogue of stellar atmospheric parametersVizieR On-line Data Catalog: B/pastel. Originally published in: 2010A&A...515A.111SPASTEL is a bibliographical catalogue compiling determinations of stellar atmospheric parameters. It provides (Teff, logg, [Fe/H]) determinations obtained from detailed analyses of high resolution, high signal to noise spectra, carried out with the help of model atmospheres. It also provides effective temperatures Teff from various methods. PASTEL is regularly updated. The catalogue supersedes the two previous versions of the [Fe/H] catalogue (Cayrel de Strobel et al., 1997 [Cat. III/200], 2001 [Cat. III/221]). (1 data file)
The PASTEL catalogue (Soubiran+, 2010)
No full textpastel.dat 30151x202 The catalogue of stellar atmospheric parametersVizieR On-line Data Catalog: B/pastel. Originally published in: 2010A&A...515A.111SPASTEL is a bibliographical catalogue compiling determinations of stellar atmospheric parameters. It provides (Teff, logg, [Fe/H]) determinations obtained from detailed analyses of high resolution, high signal to noise spectra, carried out with the help of model atmospheres. It also provides effective temperatures Teff from various methods. PASTEL is regularly updated. The catalogue supersedes the two previous versions of the [Fe/H] catalogue (Cayrel de Strobel et al., 1997 [Cat. III/200], 2001 [Cat. III/221]). (1 data file)
Ombres au tableau des avocats du Barreau de Bordeaux
No full textOmbres des maîtres :
Saignat, Descoubès, Guimard, Jolivet, Noyer Albert, Archaimbault, Habasque, de Sèze, Roy de Clotte, Dolhassarry, Bretenet, Lainé, Peyrecave, Brejon, Barennes, De Ribérot, Chartrou, Lanauve, David, Brazier, Vignerte, Thomas, Gaubert, Duthil, Dourdin, Bertin, Borderie, Lulé-Déjardin, Nicolaï, Sosthène, Benzacar, Périé, Fabre, Grossard, Barrère, Cayrel, Archambeau, Forsans, Jaubert, de Lacaussade, du Plantier, Chabrely, Bascle, O'Zomx, Didier, Léon, Naud, François, Tesniere, de la Laurencie, Cluzeau, de Jarnac, Maxwell, Rozier, de Villepreux, Rouy, Laparrn, de la Chapelle, de Roquette, Pacaud, Nadaud, Majewski, Janac, de Sigoyer, Paris, Dumora, Brune, Spanier, Gallier, Lussan, de Saint-Marc, Dussaud, Puyraud, Bougault, Cadapaud, Couprie, Laviolette, Gautier, Noyer Pierre, Soula, Raboutet. L'auteur
Observational Evidence for Atmospheric Physical Characteristics Relevant to Stellar Evolution
No full textConocimientos y actitud sobre primeros auxilios en suboficiales de la Policía de Turismo Cusco - 2024
No full textEl estudio resalta la importancia del conocimiento y actitud sobre primeros auxilios en Suboficiales de la Policía, al reducir las complicaciones y/o muertes ante emergencias prehospitalarias. Objetivo: “Determinar la relación que existe entre los conocimientos y la actitud sobre primeros auxilios en los Suboficiales de la Policía de Turismo Cusco - 2024”. Diseño metodológico: Estudio descriptivo, transversal y correlacional, conformada por una población de 129 Suboficiales de la Policía. Se aplicó dos instrumentos: el primero de conocimientos sobre primeros auxilios, desarrollado por Muñoz Tafur. Y el segundo de actitud sobre primeros auxilios con una escala tipo Likert, desarrollado por Ruiz S., y Sigueñas G. Resultados: El 84.5% tenían entre 30 y 45 años, un 63.6% eran del sexo masculino, 93.8% contaban con más de 5 años de experiencia laboral y el 60.5% carecían de capacitación en primeros auxilios. Del mismo modo se obtuvo que un 57.4% de los Suboficiales poseían un nivel conocimiento regular y con una actitud positiva con 67.4%. Se obtuvo una relación significativa entre las dimensiones de la actitud y la variable conocimiento sobre primeros auxilios, los p-valores son menores a 0.05. Además, la correlación entre edad y actitud sobre primeros auxilios mostró un coeficiente de puntuación de Tau-c de Kendall de 0,018 (p=0,774), el sexo y la actitud sobre primeros auxilios obtuvieron un Tau-c de Kendall de 0,071 (p=0,359),
Essential role for the interaction between hnRNP H/F and a G quadruplex in maintaining p53 pre-mRNA 3′-end processing and function during DNA damage
No full textFollowing DNA damage, mRNA 3′-end formation is inhibited, contributing to repression of mRNA synthesis. Here we investigated how DNA-damaged cells accomplish p53 mRNA 3′-end formation when normal mechanisms of pre-mRNA 3′-end processing regulation are inhibited. The underlying mechanism involves the interaction between a G-quadruplex structure located downstream from the p53 cleavage site and hnRNP H/F. Importantly, this interaction is critical for p53 expression and contributes to p53-mediated apoptosis. Our results uncover the existence of a specific rescue mechanism of 3′-end processing regulation allowing stress-induced p53 accumulation and function in apoptosis.</jats:p
Abundances in the Uranium-rich Star CS 31082-001
No full textThe recent discovery by Cayrel et al. of U in CS 31082-001 along with Os and Ir at greatly enhanced abundances but with [Fe/H] = -2.9 strongly reinforces the argument that there are at least two kinds of Type II supernova (SN II) sources for r-nuclei. One source is the high-frequency H events responsible for heavy r-nuclei (A > 135) but not Fe. The H-yields calculated from data on other ultra-metal-poor stars and the Sun provide a template for quantitatively predicting the abundances of all other r-elements. In CS 31082-001 these should show a significant deficiency at A < 135 relative to the solar r-pattern. It is proposed that CS 31082-001 should have had a companion that exploded as an SN II H event. If the binary survived the explosion, this star should now have a compact companion, most likely a stellar-mass black hole. Comparison of abundance data with predicted values and a search for a compact companion should provide a stringent test of the proposed r-process model. The U-Th age determined by Cayrel et al. for CS 31082-001 is, to within substantial uncertainties, in accord with the r-process age determined from solar system data. The time gap between the big bang and the onset of normal star formation allows r-process chronometers to provide only a lower limit on the age of the universe
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