1,668 research outputs found
Lettres du Dr. Perron du Caire et d'Alexandrie à M. Jules Mohl, à Paris : 1838-1854
No full textYacoub Artin Pach
Discours de M. Piot Rey sur la tombe de Yacoub Pacha Artin
No full textPiot Bey J. B. Discours de M. Piot Rey sur la tombe de Yacoub Pacha Artin. In: Bulletin de l'Institut d'Egypte, tome 1, 1918. pp. 194-195
A Simple And Accurate α-μ Approximation To Crossing Rates In Egc And Mrc Receivers Undergoing Nakagami-m Fading
No full textIn this paper, using an approach based on moment estimators, we propose highly accurate closed-form approximations for the level crossing rate of multibranch equal-gain and maximal-ratio combiners operating on independent non-identically distributed Nakagami-m fading channels. As the exact solutions, for both combiners, are given in terms of multifold integrals, our approximate results provide more ef.ciency of the computational point of view, mainly when the number of diversity branches increases. Some numerical plots are depicted and a very good agreement is ascertained between the analytical and approximate curves. © 2007 IEEE.795798Jakes, W.C., (1974) Microwave Mobile Communications, , New York: WileyBrennan, D.G., Linear diversity combining techniques (1959) In IRE, 47, pp. 1075-1102. , JunFraidenraich, G., Santos Filho, J.C.S., Yacoub, M.D., Second-order statistics of maximal-ratio and equal-gain combining in Hoyt fading (2005) IEEE Commun. Lett, 9 (1). , JanFraidenraich, G., Yacoub, M.D., Santos Filho, J.C.S., Second-order statistics of maximal-ratio and equal-gain combining in Weibull fading (2005) IEEE Commun. Lett, 9 (6), pp. 499-501. , JunYacoub, M.D., da Silva, C.R.C.M., Bautista, J.E.V., Secondorder statistics for diversity-combining techniques in Nakagami-fading channels (2001) IEEE Trans. Veh. Technol, 50 (6), pp. 1464-1470. , NovIskander, C.-D., Mathiopoulus, P.T., Analytical level crossing rates and average fade durations for diversity techniques in Nakagami fading channels (2002) IEEE Trans. Commun, 50 (8), pp. 1301-1309. , Augda Costa, D.B., Yacoub, M.D., Fraidenraich, G., Second-order statistics of equal-gain and maximal-ratio combining for the α-μ (Generalized Gamma) fading distribution (2006) IEEE International Symposium on Spread Spectrum Techniques and Applications, , Manaus, Brazil, Augda Costa, D.B., Santos Filho, J.C.S., Yacoub, M.D., Fraidenraich, G., Crossing rates and fade durations for diversity-combining techniques over α-μ fading channels (2007) Accepted for publication in IEEE Trans. Wirel. CommunNakagami, M., The m-distribution - A general formula of intensity distribution of rapid fading (1960) Statistical Methods in Radio Wave Propagation, , W. C. Hoffman, Ed. Elmsford, NY: PergamonYacoub, M.D., Bautista, J.E.V., Guedes, L.G.R., On high order statistics of the Nakagami-m distribution (1999) IEEE Trans. Veh. Technol, 48 (3), pp. 790-793. , MayYacoub, M.D., The α-μ distribution: A general fading distribution. IEEE Inter. Symp. on Personal, Indoor and Mobile Radio Commun (2002) PIMRC, 2, pp. 629-633. , SepYacoub, M.D., The α-μ distribution: A physical fading model for the Stacy distribution (2007) IEEE Trans. Veh. Technol, 56 (1), pp. 27-34. , Janda Costa, D.B., Yacoub, M.D., Santos Filho, J.C.S., An improved closed-form approximation to the sum of arbitrarily distributed Nakagami-m variates (2007), Submitted for publicationS. O. Rice. Statistical properties of random noise currents. Selected Papers on Noise and Stochastic Processes, pages 133-114, 1954. N. Wax. Ed. New York:Dove
Extrait de l'ouvrage de M. Anatole France, La Vie littéraire, communiqué au Comité par S.E. Yacoub Artin pacha
No full textFrance Anatole. Extrait de l'ouvrage de M. Anatole France, La Vie littéraire, communiqué au Comité par S.E. Yacoub Artin pacha. In: Comité de Conservation des Monuments de l'Art Arabe. Fascicule 16, exercice 1899, 1899. pp. 83-86
Leaflet kinematics after the Yacoub and Florida-sleeve operations: Results of an in vitro study
No full textOBJECTIVES: The Florida-sleeve is a valve-sparing technique that causes minimal interference to leaflet kinematics and aortic root dynamism. The aim of this in vitro study was to evaluate the effects of the Florida-sleeve and Yacoub techniques on aortic leaflet kinematics. METHODS: Two groups of 6 whole porcine hearts were treated with either the Florida-sleeve technique or the Yacoub technique and tested in a pulsatile loop. Valve fluid dynamics, coronary flow analysis and valve echocardiograms were performed both before and after the procedures. RESULTS: Both procedures showed no difference in rapid valve opening time as compared with their respective baseline values. The Florida-sleeve procedure showed a shorter slow closing time (192 ± 19 ms vs baseline 244 ± 14 ms, P = 0.016) and increased slow closing velocity (-1.5 ± 0.4 cm/s vs baseline -0.8 ± 0.4 cm/s, P = 0.038). In the rapid valve closing phase, the Yacoub procedure showed a trend towards slower closing valve velocity (-16 ± 9 cm/s vs baseline -25 ± 9 cm/s, P = 0.07). The Yacoub procedure showed larger leaflet displacement at the end of the slow valve closing time that was 2.0 ± 0.5 cm vs baseline 1.5 ± 0.3 cm, P = 0.044. When comparing the Florida-sleeve and Yacoub procedures, the former showed statistically significant shorter slow valve closing time (P = 0.017). CONCLUSIONS: This study showed that the Florida-sleeve technique alters the slow closing phase of the aortic valve leaflet kinematics when compared with both the normal baseline and Yacoub procedure, while the latter showed a larger leaflet displacement before the rapid closing valve phase
World Trade Center disaster: Short- and medium-term health outcome
No full textSeveral studies related to September 11 World Trade Center (WTC) terrorist attack have been conducted in order to monitor physical and mental health in the population at risk in the short and medium term. In this paper the main health consequences in the exposed subjects 6 years after the disaster, including ocular, gastrointestinal, respiratory and psychological effects are described and discussed
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