991 resultados para 658.916151
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Con la creciente popularidad de las soluciones de IT como factor clave para aumentar la competitividad y la creación de valor para las empresas, la necesidad de invertir en proyectos de IT se incrementa considerablemente. La limitación de los recursos como un obstáculo para invertir ha obligado a las empresas a buscar metodologías para seleccionar y priorizar proyectos, asegurándose de que las decisiones que se toman son aquellas que van alineadas con las estrategias corporativas para asegurar la creación de valor y la maximización de los beneficios. Esta tesis proporciona los fundamentos para la implementación del Portafolio de dirección de Proyectos de IT (IT PPM) como una metodología eficaz para la gestión de proyectos basados en IT, y una herramienta para proporcionar criterios claros para los directores ejecutivos para la toma de decisiones. El documento proporciona la información acerca de cómo implementar el IT PPM en siete pasos, el análisis de los procesos y las funciones necesarias para su ejecución exitosa. Además, proporciona diferentes métodos y criterios para la selección y priorización de proyectos. Después de la parte teórica donde se describe el IT PPM, la tesis aporta un análisis del estudio de caso de una empresa farmacéutica. La empresa ya cuenta con un departamento de gestión de proyectos, pero se encontró la necesidad de implementar el IT PPM debido a su amplia cobertura de procesos End-to-End en Proyectos de IT, y la manera de asegurar la maximización de los beneficios. Con la investigación teórica y el análisis del estudio de caso, la tesis concluye con una definición práctica de un modelo aproximado IT PPM como una recomendación para su implementación en el Departamento de Gestión de Proyectos.
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O Presidente da Assembleia Nacional Constituinte, Ulysses Guimarães, faz apelo aos parlamentares para que compareçam ao segundo turno de votação da Constituinte. Aposentadoria é destaque no segundo turno de votação.
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Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal
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Incluye Bibliografía
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Includes bibliography
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OBJECTIVES The aim of the Cavalier trial was to evaluate the safety and performance of the Perceval sutureless aortic valve in patients undergoing aortic valve replacement (AVR). We report the 30-day clinical and haemodynamic outcomes from the largest study cohort with a sutureless valve. METHODS From February 2010 to September 2013, 658 consecutive patients (mean age 77.8 years; 64.4% females; mean logistic EuroSCORE 10.2%) underwent AVR in 25 European Centres. Isolated AVRs were performed in 451 (68.5%) patients with a less invasive approach in 219 (33.3%) cases. Of the total, 40.0% were octogenarians. Congenital bicuspid aortic valve was considered an exclusion criterion. RESULTS Implantation was successful in 628 patients (95.4%). In isolated AVR through sternotomy, the mean cross-clamp time and the cardiopulmonary bypass (CPB) time were 32.6 and 53.7 min, and with the less invasive approach 38.8 and 64.5 min, respectively. The 30-day overall and valve-related mortality rates were 3.7 and 0.5%, respectively. Valve explants, stroke and endocarditis occurred in 0.6, 2.1 and in 0.1% of cases, respectively. Preoperative mean and peak pressure gradients decreased from 44.8 and 73.24 mmHg to 10.24 and 19.27 mmHg at discharge, respectively. The mean effective orifice area improved from 0.72 to 1.46 cm(2). CONCLUSIONS The current 30-day results show that the Perceval valve is safe (favourable haemodynamic effect and low complication rate), and can be implanted with a fast and reproducible technique after a short learning period. Short cross-clamp and CPB times were achieved in both isolated and combined procedures. The Perceval valve represents a promising alternative to biological AVR, especially with a less invasive approach and in older patients.
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u.a.: Streitigkeiten über die geplante Vermögensaufteilung; Mutter-Sohn-Konflikt;
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Grossmann, Henrik: "The Nature of Economic Crisis". Typoskript, 4 Blatt; Über die Tätigkeiten des Institutes für Sozialforschung. Verschiedene Berichte. 1940- 1941; "Report to the Trustees of the Kurt Gerlach Memorial Foundation". 25.01.1940, Typoskript, 5 Blatt; "Manuskript under preparation". Januar 1940, handschriftliche Liste, 1 Blatt; Horkheimer, Max: "Über die allgemeine Lage des Instituts". Bericht für das Advisory Bord (New York members) Meeting, 22.04.1940; sowie ein Protokoll des Treffens, Typoskript, 5 Blatt; "Annual Report on the Activities of the Société International de Recherces Sociales, Presented to the Eight General Meeting in New York City on April 27, 1940"; sowie "Report on the Activities of the International Institute of Social Research for the Year 1939". Typoskript, 13 Blatt; "Report to the Trustees of the Kurt Gerlach Memorial Foundation". 23.02.1941, Typoskript mit eigenhändigen Ergänzungen von Max Horkheimer und handschriftlichen Ergänzungen und Korrekturen von Leo Löwenthal, 7 Blatt; Liste der Veröffentlichungen und der Forschungsgebiete des Instituts für Sozialforschung; "Content of Periodicals. List of Articles and Selected Major Book Reviews Arranged According to Contibutors. List of Articles and Selected Major Book Reviews Arranged According Topics. 1934-1941". a) Typoskript, 14 Blatt; b) Typoskript , 15 Blatt; "Literatur über features". 03.02.1941, Veröffentlichungsliste, 1 Blatt; Veröffentlichungsliste zu den Gebieten Nationalsozialismus, Massenkultur, Sozialgeschichte des späteren Mittelalters; 19.12.1941, Typoskript, 1 Blatt; Ankündigung und Übersicht über die ersten Nummern der "Studies in Philosophy and Social Science". 1941; Typoskripte und Drucksachen, 3 Blatt; "Supplementary Memorandum on the Activities of the Institute from 1939 to 1941. (supplemented to December, 1942)". 1942, als Typoskript vervielfältigt, 5 Blatt; Über Organisation und Mitarbeiter des Institutes für Sozialforschung. 1943; a) Typoskript, 6 Blatt; b) Typoskript, 7 Blatt; c) Teilstück, Typoskript mit handschriftlichen Korrekturen, 2 Blatt; d) Teilstück, Typoskript, 3 Blatt; e) Entwurf, Typoskript mit handschriftlichen Korrekturen, 8 Blatt; "Annual Report on the Activities of the Social Studies Association, Inc.". 15.05.1943, Typoskript, 6 Blatt; "Statement of Prof. Dr. Max Horkheimer, Director of the Institut of Social Research on June 9, 1943. Reponse: Certain Charges made against the Institut of Social Research (Columbia University)". 1943; a) Typoskript, 6 Blatt; b) Typoskript mit handschriftlichen Randbemerkungen, 6 Blatt; c) deutsche Rückübersetzung, 1969, Typoskript mit handschriftlichen Korrekturen, 4 Blatt;
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Ocean Drilling Program Site 658, cored below a major upwelling cell offshore Cap Blanc, contains a largely undisturbed hemipelagic sediment section spanning the Brunhes Chron and the early Quaternary and late Pliocene. The companion Site 659 recovered a complete and undisturbed Neogene profile further offshore that serves as a nonupwelling pelagic reference section. Oxygen and carbon isotope ratios in benthic (C. wuellerstorfi and in part Uvigerina sp.) and planktonic foraminifers (G. inflata) provide a climatic record of high resolution for the Brunhes Chron. At Site 658 the record extends back to the early Pleistocene and late Pliocene. The standard oxygen isotope record of the last 730,000 yr is markedly refined by a well-documented high-frequency variation (e.g., by a new "aborted" ice age at stage 13.2 and by Younger-Dryas style climatic setbacks during most terminations). In the late Pliocene, the numerical oxygen isotope stage taxonomy was extended back to stage 137 about 3.3 Ma ago. In comparison with published records, stage 114 at 2.7 Ma represents the first major glaciation event, when 18O was short-term enriched up to a middle Pleistocene glacial d18O level. About 3.17 Ma ago (stage 133), the interglacial oxygen isotope values of C. wuellerstorfi started to increase by 0.5 per mil until 2.7 Ma and then remained largely constant until the Holocene. Based on the d13C difference between C. wuellerstorfi and G. inflata, the dissolved CO2 in the ambient bottom water of Site 658 was dominated by the flux of particulate carbon from the overlying upwelling cell during the last 630,000 yr. In contrast, the advection of (upper) North Atlantic Bottom Water dominated in the control of the local CO2 content during the early Pleistocene and late Pliocene.
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Growing evidence suggests that the low atmospheric CO2 concentration of the ice ages resulted from enhanced storage of CO2 in the ocean interior, largely as a result of changes in the Southern Ocean1. Early in the most recent deglaciation, a reduction in North Atlantic overturning circulation seems to have driven CO2 release from the Southern Ocean**2, 3, 4, 5, but the mechanism connecting the North Atlantic and the Southern Ocean remains unclear. Biogenic opal export in the low-latitude ocean relies on silicate from the underlying thermocline, the concentration of which is affected by the circulation of the ocean interior. Here we report a record of biogenic opal export from a coastal upwelling system off the coast of northwest Africa that shows pronounced opal maxima during each glacial termination over the past 550,000 years. These opal peaks are consistent with a strong deglacial reduction in the formation of silicate-poor glacial North Atlantic intermediate water**2 (GNAIW). The loss of GNAIW allowed mixing with underlying silicate-rich deep water to increase the silicate supply to the surface ocean. An increase in westerly-wind-driven upwelling in the Southern Ocean in response to the North Atlantic change has been proposed to drive the deglacial rise in atmospheric CO2 (refs 3, 4). However, such a circulation change would have accelerated the formation of Antarctic intermediate water and sub-Antarctic mode water, which today have as little silicate as North Atlantic Deep Water and would have thus maintained low silicate concentrations in the Atlantic thermocline. The deglacial opal maxima reported here suggest an alternative mechanism for the deglacial CO2 release**5, 6. Just as the reduction in GNAIW led to upward silicate transport, it should also have allowed the downward mixing of warm, low-density surface water to reach into the deep ocean. The resulting decrease in the density of the deep Atlantic relative to the Southern Ocean surface promoted Antarctic overturning, which released CO2 to the atmosphere.