Browsing by Title Facultad de Ciencias Físicas y Matemáticas
Now showing items 20245-20264 of 20505
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(Springer New York LLC, 2019)This paper summarizes the development of Veamy, an object-oriented C++ library for the virtual element method (VEM) on general polygonal meshes, whose modular design is focused on its extensibility. The linear elastostatic ...
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(Institute of Electrical and Electronics Engineers Inc., 2019)© 1982-2012 IEEE. The modular multilevel matrix converter (M 3 C) is an ac-to-ac converter topology suitable for the control of high-power variable-speed drives. The control of this converter is complex, particularly when ...
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Vector Lyapunov-like functions for multi-order fractional systems with multiple time-varying delays (Elsevier, 2020)In this paper, a general method to establish the asymptotic behaviour of solutions to multi-order multiple time-varying delays nonlinear systems is proposed. The method, relying on vector Lyapunov-like functions and on ...
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(Elsevier, 2010)This paper proposes a method for reducing the number of search nodes involved in the solution of queries arriving to a Web search engine. The method is applied by the query receptionist machine during situations of sudden ...
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(2007)Boundary value problems for systems of ordinary differential equations are studied. These systems involve asymptotically homogeneous operators. Leray-Schauder indices are calculated for these operators and the concept of ...
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(Universidad de Chile, 2017)El alcoholismo es un grave problema socio-económico. El costo asociado al abuso del alcohol se ha estimado en 1.300 millones de dólares para la economía chilena y en 185 billones para Estados Unidos, costo que se debe ...
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(EDP Sciences, 2016)Context. The B-W method is used to determine the distance of Cepheids and consists in combining the angular size variations of the star, as derived from infrared surface-brightness relations or interferometry, with its ...
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(Universidad de Concepcion, 2019)The supply of fresh, high-quality and easily accessible vegetables is essential to improve the diet in Chile. The central zone is the main production area of the country. The objective of this research was to characterize ...
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(Universidad de la Frontera, 2019)The VEGF levels and its binding to its receptors are key stages in the regulation of angiogenesis. Acetylsalicylic acid (ASA), widely used in post-myocardial infarction treatment, has been shown to have an anti-angiogenic ...
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(Institute of Electrical and Electronics Engineers Inc., 2019)The lack of available spectrum for wireless communications is a threat to the successful deployment of applications designed for intelligent transportation systems (ITSs). The ITS services should be available to a high ...
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(IOP PUBLISHING LTD, 2004-10-01)We present observations of the Vela X region at 31 GHz using the Cosmic Background Imager ( CBI). We find a strong compact radio source (5.'9 x 4.'1, FWHM) about the Vela pulsar, which we associate with the Vela pulsar ...
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(1994-07-01)We present H92alpha radio recombination line and radio continuum observations toward three cometary-like H II regions, G13.87 + 0.28, G32.80 + 0.19B, and G61.48 + 0.09B1, with an angular resolution of approximately 2''. ...
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(Universidad de Chile, 2023)
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(Universidad de ChilePrograma Cybertesis, 2007)
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(Universidad de Chile, 2017)El presente estudio de caso surge a partir de la experiencia profesional a cargo de la ejecución de proyectos presidenciales (PP) desde la Dirección de Arquitectura del Ministerio de Obras Públicas. Los resultados de la ...
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(Universidad de Chile, 2016)Nuestro Sistema de Seguridad y Salud en el Trabajo ha transitado desde un origen más bien privado, con ausencia de un rol fuerte por parte del Estado hacia un sistema fundamentalmente privatizado pero con un creciente rol ...
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(Universidad de Chile, 2011)El presente estudio tiene como propósito identificar los factores de éxito para la implementación de un sistema de Ventanilla Única de Comercio Exterior (VUCE) en Chile, caracterizada por una tramitación integrada de ...
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(Universidad de Chile, 2023)El presente trabajo de título tiene como objetivo continuar la línea de investigación sobre la complementariedad entre las tecnologías de generación renovables en Chile mediante un análisis estadístico de la operación del ...
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(Universidad de Chile, 2015)Gracias a los avances en la tecnología, se ha desarrollado un gran aumento de construcción de edificios altos. Las estructuras altas presentan un bajo amortiguamiento y los daños producidos durante vibraciones fuertes, ...
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(Universidad de Chile, 2022)Los avances tecnológicos en el campo de la generación eólica han provocado un aumento en la implementación de aerogeneradores en la matriz de generación eléctrica del país, junto a las demás energías renovables no ...
