201 research outputs found

    The comparisons of Imbarum (fog) in the Prism of Sennacherib (Chicago Oim A2793) and thier biblical affinities with ‘Ărâfel

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    El presente artículo trata de sacar a la luz los elementos comunes que existen, por una parte, en los símiles que se construyen con el término imbarum dentro del Prisma de Senaquerib y, por otra, en las citas que hay con la misma temática en pasajes bíblicos y, sobre todo, en la literatura profética. En continuidad con estudios similares anteriores, parece claro que estas coincidencias literarias que se dan en ambas tradiciones permiten, aun sin ser taxativas, iluminar la hermenéutica de los textos acadios y bíblicos analizadosThe present paper aims to reveal the common elements that exist, on the one hand, in the similes that are constructed with the Akkadian term imbarum within the Sennacherib’s prism and, on the other, in the quotations that exist in Biblical passages with the same subject and, especially, in the Prophetic Literature. In continuity with similar previous studies, it seems clear that these literary coincidences in both traditions allow, even without being limited, to illuminate the hermeneutics of the Akkadian and Biblical texts analyze

    Etrusco "*huσ, huσ(i)ur" : ¿un préstamo del griego ὗς / ὑύς?

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    En este artículo se plantea la posibilidad de relacionar el término etrusco *huσ, huσ(i)ur con el griego ὗς / ὑύς. Aparte de la semejanza fonética y de la equivalencia semántica, existen otros elementos que permiten sugerir que el etrusco *huσ, huσ(i)ur puede ser considerado un préstamo del griego ὗς / ὑύς. La comparación interna y los apoyos epigráficos pueden favorecer dicha intuición.En aquest article es planteja la possibilitat de relacionar el terme etrusc *huσ, huσ(i)ur amb el grec ὗς / ὑύς. A part de la semblança fonètica i de l'equivalència semàntica, existeixen altres elements que permeten suggerir que l'etrusc *huσ, huσ(i)ur pot ser considerat un préstec del grec ὗς / ὑύς. La comparació interna i els suports epigràfics poden afavorir aquesta intuïció.In this paper, the author suggests the possibility of relating the Etruscan term *huσ, huσ(i)ur to Greek ὗς / ὑύς. Apart from the phonetic similarity and the semantic equivalence, there exist other elements which allow to suggest that the Etruscan term *huσ, huσ(i)ur can be considered a loanword from Greek ὗς / ὑύς. Internal comparison and epigraphic supports can favor the abovementioned intuition

    Etruscan "*huσ, huσ(i)ur" : a loanword from Greek ὗς / ὑύς?

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    En este artículo se plantea la posibilidad de relacionar el término etrusco *huσ, huσ(i)ur con el griego ὗς / ὑύς. Aparte de la semejanza fonética y de la equivalencia semántica, existen otros elementos que permiten sugerir que el etrusco *huσ, huσ(i)ur puede ser considerado un préstamo del griego ὗς / ὑύς. La comparación interna y los apoyos epigráficos pueden favorecer dicha intuición.En aquest article es planteja la possibilitat de relacionar el terme etrusc *huσ, huσ(i)ur amb el grec ὗς / ὑύς. A part de la semblança fonètica i de l’equivalència semàntica, existeixen altres elements que permeten suggerir que l’etrusc *huσ, huσ(i)ur pot ser considerat un préstec del grec ὗς / ὑύς. La comparació interna i els suports epigràfics poden afavorir aquesta intuïció.In this paper, the author suggests the possibility of relating the Etruscan term *huσ, huσ(i)ur to Greek ὗς / ὑύς. Apart from the phonetic similarity and the semantic equivalence, there exist other elements which allow to suggest that the Etruscan term *huσ, huσ(i)ur can be considered a loanword from Greek ὗς / ὑύς. Internal comparison and epigraphic supports can favor the abovementioned intuition

    Speaker Diarization Based on Intensity Channel Contribution

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    The time delay of arrival (TDOA) between multiple microphones has been used since 2006 as a source of information (localization) to complement the spectral features for speaker diarization. In this paper, we propose a new localization feature, the intensity channel contribution (ICC) based on the relative energy of the signal arriving at each channel compared to the sum of the energy of all the channels. We have demonstrated that by joining the ICC features and the TDOA features, the robustness of the localization features is improved and that the diarization error rate (DER) of the complete system (using localization and spectral features) has been reduced. By using this new localization feature, we have been able to achieve a 5.2% DER relative improvement in our development data, a 3.6% DER relative improvement in the RT07 evaluation data and a 7.9% DER relative improvement in the last year's RT09 evaluation data

    Implementación de un simulador de rendimiento, consumo y coste para Centros de Datos integrados en un Smart Grid

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    Actualmente uno de los mayores costes de un Centro de Proceso de Datos es el consumo eléctrico, especialmente el generado para el funcionamiento de los sistemas de refrigeración. Los simuladores constituyen una herramienta imprescindible para optimizar su funcionamiento de la forma más eficiente posible. A su vez, los simuladores deben ejecutarse en tiempos razonables, además de permitir su ejecución con distintas configuraciones de los sistemas cuyo comportamiento se quiere simular. Este proyecto consiste en la elaboración y desarrollo de un modelo de consumo de un Data Center utilizando las ecuaciones descritas en los artículos "Dynamic Workload and Cooling Management in High-Efficiency Data Centers" y "Leakage-Aware Cooling Management for Improving Server Energy Efficiency", reseñados en la bibliografía [1] y [2], empleadas anteriormente en el simulador DC-Sim, generando una infraestructura base para futuros desarrollos. El nuevo modelo, basado en el formalismo DEVS, es fácilmente escalable y permite la ampliación con nuevas funcionalidades, además de permitir la implementación de cualquier topología y tamaño de Data Center, con diferentes cargas de trabajo

    Numerical simulation of a supersonic ejector for vacuum generation with explicit and implicit solver in openfoam

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    Supersonic ejectors are used extensively in all kind of applications: compression of refrigerants in cooling systems, pumping of volatile fluids or in vacuum generation. In vacuum generation, also known as zero-secondary flow, the ejector has a transient behaviour. In this paper, a numerical and experimental research of a supersonic compressible air nozzle is performed in order to investigate and to simulate its behaviour. The CFD toolbox OpenFOAM 6 was used, with two density-based solvers: explicit solver rhoCentralFoam, which implements Kurganov Central-upwind schemes, and implicit solver HiSA, which implements the AUSM+up upwind scheme. The behaviour of the transient evacuation ranges between adiabatic polytropic exponent at the beginning of the process and isothermal at the end. A model for the computation of the transient polytropic exponent is proposed. During the evacuation, two regimes are encountered in the second nozzle. In the supercritic regime, the secondary is choked and sonic flow is reached. In the subcritic regime, the secondary flow is subsonic. The final agreement is good with the two different solvers, although simulation tends to slightly overestimate flow rate for large values region.Peer ReviewedPostprint (published version

    Flexible rod design for educational wind balance

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    This is a copy of the author 's preprint version of an article published in the journal Experimental techniques. The final publication is available at Springer via http://dx.doi.org/10.1007/s40799-016-0017-9This article provides a technical description of a flexible hinge for wind tunnel rigs. For academic purposes, the device was integrated into several rod flexures to build a home-made external wind balance system. The cylindrical elastic element incorporates several notches, and the flexure linkage is able to transmit force in the main axial direction without hindering perpendicular movement. The flexural element described here is simple and easily manufactured, and can also be used with other types of wind balance. The flexure described in this article has similar functionality to those mentioned in the reference section, but has a more compact element. The project's effectiveness was demonstrated in a series of experimental comparisons of forces and moments measured on a wing using the N.A.C.A. Clark-Y airfoil profile.Preprin

    Estimation of wall shear stress using 4D flow cardiovascular MRI and computational fluid dynamics

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    Electronic version of an article published as Journal of mechanics in medicine and biology, 0, 1750046 (2016), 16 pages. DOI:10.1142/S0219519417500464 © World Scientific Publishing CompanyIn the last few years, wall shear stress (WSS) has arisen as a new diagnostic indicator in patients with arterial disease. There is a substantial evidence that the WSS plays a significant role, together with hemodynamic indicators, in initiation and progression of the vascular diseases. Estimation of WSS values, therefore, may be of clinical significance and the methods employed for its measurement are crucial for clinical community. Recently, four-dimensional (4D) flow cardiovascular magnetic resonance (CMR) has been widely used in a number of applications for visualization and quantification of blood flow, and although the sensitivity to blood flow measurement has increased, it is not yet able to provide an accurate three-dimensional (3D) WSS distribution. The aim of this work is to evaluate the aortic blood flow features and the associated WSS by the combination of 4D flow cardiovascular magnetic resonance (4D CMR) and computational fluid dynamics technique. In particular, in this work, we used the 4D CMR to obtain the spatial domain and the boundary conditions needed to estimate the WSS within the entire thoracic aorta using computational fluid dynamics. Similar WSS distributions were found for cases simulated. A sensitivity analysis was done to check the accuracy of the method. 4D CMR begins to be a reliable tool to estimate the WSS within the entire thoracic aorta using computational fluid dynamics. The combination of both techniques may provide the ideal tool to help tackle these and other problems related to wall shear estimation.Peer ReviewedPostprint (author's final draft

    A review of gerotor technology in hydraulic machines

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    Over the years, numerous investigations have established the gerotor fundamentals. This work aims to provide a complete review of the literature from the last decade, focusing on the articles published in the past five years on gerotor technology in hydraulic machines. The report gives a catalogue of guidelines based on the trochoidal-envelope definition, a background analysis, the worldwide distribution of articles in each continent and country and the most frequently used keywords in the field. The paper identifies state-of-the-art research, and reports on current mainstream ideas. From the historical background, this literature review reports the current approaches in gerotor pumps (geometry and performance approaches, modeling and numerical simulations), orbital motors and new concepts. The report will serve as a guide and a directory for novel engineers working with gerotor technology in hydraulic machines. Another intention of this paper is to disseminate the works of the researchers who use this technology around the world, and to provide a scenario for future international collaboration. The paper gives an account of the disparity between academia and engineering applications. There is currently very little published literature on design and production methodologies for gerotor pumps and orbital motors. Hence, the future goal is to collect recommendations that combine academia and industry expertise to make better use of these extensive studies in the fieldPostprint (published version

    Política en educación para el desarrollo sostenible del Ministerio de Educación Pública de Costa Rica

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    Education for Sustainable Development (ESD) has been integrated into numerous global frameworks and conventions. Currently, there is growing international recognition that considers ESD as an integral element of quality education, since it provides people with skills that allow them to face the challenges posed by  changes regarding environmental- alteration,  which in turn manifest themselves as social fractures. In this sense, the Education policy and action plan for Sustainable Development, approved by the Higher Council of Education in 2020, formalize the route for the implementation of such a model as an axis that can permeate the curriculum of the different subjects in the public school system, and in response to the commitment acquired by the country for sustainable development achievement goals (SDGs.)La educación para el desarrollo sostenible (EDS) se ha integrado en numerosos marcos y convenciones mundiales. Existe ahora un creciente reconocimiento internacional como elemento integral de una educación de calidad que forma personas con habilidades para enfrentar los desafíos que plantean los cambios provocados por las alteraciones en el ambiente y que, a su vez, se manifiestan en fracturas sociales. En ese sentido, la Política y Plan de Acción de Educación para el Desarrollo Sostenible, aprobada por el Consejo Superior de Educación en el año 2020, formaliza la ruta para la implementación del modelo como un eje que impregna el currículo en las diferentes asignaturas; en respuesta al compromiso adquirido por el país en el logro de los objetivos para el desarrollo sostenible (ODS)
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