564 research outputs found
Voces - Drama in One Act
This thesis consists of a chamber-staged composition for soprano, baritone, modified Pierrot ensemble (flute, clarinet, piano, violin, viola and cello), Colombian tiple, and fixed media, together with an analytical paper in which I discuss my compositional techniques and their historical antecedents. The composition is an interpretation of an acute schizophrenic episode of a young female patient that is committed to a mental health facility. It was inspired by the need to bring awareness about mental illness and the struggles that these patients experience every day. In this work, I explore the inclusion of a folkloric instrument, the Colombian tiple, within a classical chamber ensemble to expand the color and timbre of the sound world of the composition. In addition, I use different compositional techniques including set theory, unordered pitch collections, and choral-like polyphonic texture. The work is composed in a twenty-first century expressionistic style
Photochemistry of N-(selenoalkyl)-phthalimides. Formation of N, Se-heterocyclic systems
A variety of N-(selenomethyl)alkyl-phthalimides (alkyl = -(CH2)n-; n = 2-5, 1a, b, d, e) and N-(selenobenzyl)propyl phthalimide (1c) were synthesized and their photochemistry was studied at λ = 300 nm. Steady-state photolysis and laser time-resolved spectroscopy studies confirmed that these reactions proceeded by direct or acetone-sensitized excitation followed by intramolecular electron transfer (ET) between Se atom and the phthalimide moiety. Two main pathways are possible after ET: proton transfer to the ketyl radical anion from the CH3Se+ or the -CH2Se+- moieties, yielding the corresponding biradicals. Collapse of these biradicals yields cyclization products with the respective endo or exo selenium-containing heterocycles. Competition between both proton transfer processes depends on the chain length of the alkyl spacer between the phthalimide and Se groups as well as the size of the cycle being formed.Fil: Oksdath Mansilla, Gabriela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Heredia, Adrián Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Argüello, Juan Elias. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Peñeñory, Alicia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentin
Nonlinear model predictive control for thermal management in plug-in hybrid electric vehicles
© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.A nonlinear model predictive control (NMPC) for the thermal management (TM) of Plug-in Hybrid Electric Vehicles (PHEVs) is presented. TM in PHEVs is crucial to ensure good components performance and durability in all possible climate scenarios. A drawback of accurate TM solutions is the higher electrical consumption due to the increasing number of low voltage (LV) actuators used in the cooling circuits. Hence, more complex control strategies are needed for minimizing components thermal stress and at the same time electrical consumption. In this context, NMPC arises as a powerful method for achieving multiple objectives in Multiple input- Multiple output systems. This paper proposes an NMPC for the TM of the High Voltage (HV) battery and the power electronics (PE) cooling circuit in a PHEV. It distinguishes itself from the previously NMPC reported methods in the automotive sector by the complexity of its controlled plant which is highly nonlinear and controlled by numerous variables. The implemented model of the plant, which is based on experimental data and multi- domain physical equations, has been validated using six different driving cycles logged in a real vehicle, obtaining a maximum error, in comparison with the real temperatures, of 2C. For one of the six cycles, an NMPC software-in-the loop (SIL) is presented, where the models inside the controller and for the controlled plant are the same. This simulation is compared to the finite-state machine-based strategy performed in the real vehicle. The results show that NMPC keeps the battery at healthier temperatures and in addition reduces the cooling electrical consumption by more than 5%. In terms of the objective function, an accumulated and weighted sum of the two goals, this improvement amounts 30%. Finally, the online SIL presented in this paper, suggests that the used optimizer is fast enough for a future implementation in the vehicle.Accepted versio
Olivia Arévalo Lomas: Kiñe azkintuwe chew ñi rumelgewepem Bagümgen chi perimol qülkantun shipibo-konibo-xeteba
Esta investigación se enmarca en el contexto del Proyecto Fondecyt n.° 1191016 titulado “Consolidación de la escuela monocultural en territorio mapuche, periodo post-reduccional (1929-1973). Colonialidad republicana e invisibilización del mapun-kimün” y el Proyecto de investigación Habitar y narrar el territorio: herramientas para el fortalecimiento del proyecto etnoeducativo del pueblo Uwa, Kajkrasa Ruyina código SGI 2454, desarrollado por el grupo de investigación “Historia y Prospectiva de la Universidad Latinoamericana”. HISULA y fnanciado por la vicerrectoría de investigaciones de la UPTCEste artículo plantea una reflexión acerca de la sabiduría ancestral indígena de un pueblo del Perú amazónico a partir del asesinato de una mujer sabia. Con el análisis teórico documental realizado se pretende comprender el ethos sociocultural que vive el pueblo indígena shipibo-konibo-xeteba, y el hito que evidencia el intento de usurpación de la sabiduría ancestral del modo más violento que se pueda presentar en el mundo contemporáneo: el asesinato de la maestra espiritual Olivia Arévalo, un verdadero tesoro humano. El método fue una revisión sistemática y sintética del pueblo shipibo-konibo. Los resultados pueden contribuir a promover el interés por estudiar los liderazgos femeninos de los pueblos originarios y, a la vez, interpela a la comunidad académica y política respecto a los diferentes asesinatos de líderes y lideresas indígenas en diversos territorios de América Latina. A la vez, contribuye a la visibilidad, reconocimiento y difusión del patrimonio cultural inmaterial de la diversidad presente en el continent
Influência alemã na reforma das Escolas Normais de Preceptores e Preceptoras no centro sul do Chile, 1883-1920
Este artículo estudia la influencia de la pedagogía alemana en la reforma a la instrucción de profesores y profesoras en las Escuelas Normales que impulsaron los Gobiernos liberales a fines del siglo xixen Chile. Las visitas a Alemania realizadas principalmente por Valentín Letelier Madariaga y José Abelardo Núñez les permitieron convencerse de la superioridad de los métodos germanos y la necesidad de otorgar a la pedagogía chilena un estatus científico, a imagen y semejanza de la cultura europea occidental y positivista. Con el análisis teórico documental que se realiza se pretende comprender la dinámica que adquirió la presencia ideológica y cultural alemana en el proyecto Estado-Nación pensado y soñado por los grupos dirigentes oligárquicos de Chile a partir de la formación de preceptores y preceptoras. El método fue cualitativo-descriptivo con un diseño historiográfico, el cual se desarrolló a partir de la triangulación metodológica entre fuentes primarias y secundarias. Los resultados pueden contribuir a promover el interés por estudiar un campo inexplorado por la investigación educativa en Chile: la enorme influencia alemana en los inicios de la instalación de la escuela normal en el centro sur de Chile.This article studies the influence of the German pedagogy in the teachers training reform of the Normal Schools promoted by the liberal governments at the end of the 19th century in Chile. The visits of Valentín Letelier Madariaga and José Abelardo Núñez to Germany convinced them about the superiority of Germanic methods and the need to provide the Chilean pedagogy with a scientific status, in the image and likeness of Western European and positivist culture. This documentary theoretical analysis aims to understand the dynamics of the German ideological and cultural presence in the Nation-State project, thought and dreamed, by the oligarchical leading groups of Chile based on the formation of female and male preceptors. The method was qualitative-descriptive with a historiographic design developed from the methodological triangulation between primary and secondary sources. The results of this work can stimulate the interest to study an unexplored field in the Chilean educational research: the vast German influence at the beginning of the installation of the Normal School in South-central Chile.Este artigo estuda a influência da pedagogia alemã na reforma da instrução de professores e professoras nas Escolas Normais que impulsionaram os governos liberais nos fins do século XIX no Chile. As visitas à Alemanha realizadas principalmente por Valentín Letelier Madariaga e José Abelardo Núñez lhes permitiram convencer-se da superioridade dos métodos germânicos e da necessidade de outorgar a pedagogia chilena a um status científico, à imagem e semelhança da cultura europeia ocidental e positivista. Por meio de uma análise teórico documental se pretende compreender a dinâmica que adquiriu a presença ideológica e cultural no projeto Estado-Nação, pensado e sonhado pelos grupos dirigentes oligárquicos do Chile a partir da formação de preceptores e preceptoras. O método usado foi qualitativo-descritivo com um recorte historiográfico, que se desenvolveu a partir da triangulação metodológica entre fontes primarias e secundárias. Os resultados podem contribuir para promover o interesse por estudar um campo inexplorado pela pesquisa educativa no Chile: a enorme influência alemã nos inícios da instalação da escola normal no centro sul do Chile
Rehabilitación de la pedanía "El cuartico" (patrimonio historico-cultural) como motor de evolución y empleo
Treball final de Grau en Arquitectura Tècnica. Codi: ED0945. Curs acadèmic 2016-201
Effect of agroecosystems on seroprevalence of St. Louis encephalitis and West Nile viruses in birds, La Pampa, Argentina, 2017–2019
In Argentina, the La Pampa ecoregion has been almost completely transformed into agroecosystems. To evaluate the environmental (agricultural area, tree coverage, distance to the nearest water body and urban site) and biological (dove, cowbird, and sparrow abundance) effects on free-ranging bird exposure to St. Louis encephalitis virus (SLEV) and West Nile virus (WNV), we used generalized linear mixed models. For 1,019 birds sampled during 2017–2019, neutralizing antibodies were found against SLEV in samples from 60 (5.8%) birds and against WNV for 21 (2.1%). The best variable for explaining SLEV seroprevalence was agricultural area, which had a positive effect; however, for WNV, no model was conclusive. Our results suggest that agroecosystems in the La Pampa ecoregion increase the exposure of avian hosts to SLEV, thus potentially increasing virus activity.Fil: Mansilla, Ana Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; ArgentinaFil: Grande, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Ciencias de la Tierra y Ambientales de La Pampa. Universidad Nacional de La Pampa. Facultad de Ciencias Exactas y Naturales. Instituto de Ciencias de la Tierra y Ambientales de La Pampa; ArgentinaFil: Diaz, Luis Adrian. Universidad Nacional de Córdoba. Facultad de Medicina. Instituto de Virología Dr. J. M. Vanella; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentin
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