979 resultados para Ácaro
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Contiene un anexo con solución a las actividades propuestas
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Proyecto interdisciplinar de animación a la lectura y educación en valores desarrollado a lo largo de un curso académico. El Proyecto tuvo como estímulo inicial la lectura del libro titulado 'El Señor del Cero', de María Isabel Molina, un texto que permite trabajar la educación en valores como la amistad, la tolerancia y el respeto, además de conocer la historia de las matemáticas al indagar sobre el origen de las cifras, la evolución de los sistemas de numeración, algoritmos, instrumentos de cálculo y biografías de grandes matemáticos. La comunidad educativa del IES Mar Menor de Santiago de la Ribera (Murcia) acoge a una gran variedad de alumnos procedentes de paises extranjeros (magrebíes, ecuatorianos, ingleses, etc.) diversidad que es riqueza para toda la comunidad. La idea de este proyecto parte del departamento de Matemáticas al que se unieron los de Lengua, Ciencias Sociales, Ciencias Naturales, Física y Química, Inglés y Orientación. .
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Publicación realizada al amparo de los Proyectos de Innovación Educativa tipo A-2, en el contexto de la Convergencia Europea (R-232/2008, de 22 de abril 2008 de la Universidad de Murcia), financiados por la Universidad de Murcia y por la Comunidad Autónoma de la Región de Murcia.
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Incluye un juego de cartas denominado la Baraja de las Competencias Comunicativas.
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La publicaci??n es el resultado de un proyecto de investigaci??n realizado en el marco del Programa III de Convenio entre el Centro de Formaci??n y Desarrollo Profesional de la Universidad de Murcia y la Consejer??a de Educaci??n, Formaci??n y Empleo. - La obra gu??a de esta publicaci??n puede consultarse en Redined http://www.doredin.mec.es/documentos/01820092005611.pdf
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This article studies the static pricing problem of a network service provider who has a fixed capacity and faces different types of customers (classes). Each type of customers can have its own capacity constraint but it is assumed that all classes have the same resource requirement. The provider must decide a static price for each class. The customer types are characterized by their arrival process, with a price-dependant arrival rate, and the random time they remain in the system. Many real-life situations could fit in this framework, for example an Internet provider or a call center, but originally this problem was thought for a company that sells phone-cards and needs to set the price-per-minute for each destination. Our goal is to characterize the optimal static prices in order to maximize the provider's revenue. We note that the model here presented, with some slight modifications and additional assumptions can be used in those cases when the objective is to maximize social welfare.
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Seleccionado en la convocatoria: Ayudas para desarrollar proyectos de convivencia, Gobierno de Arag??n 2008-09
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Resumen tomado de la publicaci??n
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Resumen tomado de la publicaci??n
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Resumen tomado de la publicaci??n. Resumen tambi??n en ingl??s
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A collection of slides from the authorpsilas seminar presentation is given
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Ethernet is becoming the dominant aggregation technology for carrier transport networks; however, as it is a LAN technology, native bridged ethernet does not fulfill all the carrier requirements. One of the schemes proposed by the research community to make ethernet fulfill carrier requirements is ethernet VLAN-label switching (ELS). ELS allows the creation of label switched data paths using a 12-bit label encoded in the VLAN TAG control information field. Previous label switching technologies such as MPLS use more bits for encoding the label. Hence, they do not suffer from label sparsity issues as ELS might. This paper studies the sparsity issues resulting from the reduced ELS VLAN-label space and proposes the use of the label merging technique to improve label space usage. Experimental results show that label merging considerably improves label space usage
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Recent developments in optical communications have allowed simpler optical devices to improve network resource utilization. As such, we propose adding a lambda-monitoring device to a wavelength-routing switch (WRS) allowing better performance when traffic is routed and groomed. This device may allow a WRS to aggregate traffic over optical routes without incurring in optical-electrical-optical conversion for the existing traffic. In other words, optical routes can be taken partially to route demands creating a sort of "lighttours". In this paper, we compare the number of OEO conversions needed to route a complete given traffic matrix using either lighttours or lightpaths
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Wavelength division multiplexing (WDM) networks have been adopted as a near-future solution for the broadband Internet. In previous work we proposed a new architecture, named enhanced grooming (G+), that extends the capabilities of traditional optical routes (lightpaths). In this paper, we compare the operational expenditures incurred by routing a set of demands using lightpaths with that of lighttours. The comparison is done by solving an integer linear programming (ILP) problem based on a path formulation. Results show that, under the assumption of single-hop routing, almost 15% of the operational cost can be reduced with our architecture. In multi-hop routing the operation cost is reduced in 7.1% and at the same time the ratio of operational cost to number of optical-electro-optical conversions is reduced for our architecture. This means that ISPs could provide the same satisfaction in terms of delay to the end-user with a lower investment in the network architecture
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Optical transport networks (OTN) must be prepared in terms of better resource utilization, for accommodating unicast and multicast traffic together. Light-trees have been proposed for supporting multicast connections in OTN. Nevertheless when traffic grooming is applied in light-trees, resources can be underutilized as traffic can be routed to undesirable destinations in order to avoid optical-electrical-optical (OEO) conversions. In this paper, a novel architecture named S/G light- tree for supporting unicast/multicast connections is proposed. The architecture allows traffic dropping and aggregation in different wavelengths without performing OEO conversions. A heuristic that routes traffic demands using less wavelengths by taking advantage of the proposed architecture is designed as well. Simulation results show that the architecture can minimize the number of used wavelengths and OEO conversions when compared to light-trees