178,117 research outputs found
Software de backup : gestión de copias de seguridad GSIT
No full textBelda Vila, R. (2008). Software de backup : gestión de copias de seguridad GSIT. https://riunet.upv.es/handle/10251/8904.Archivo delegad
L'Església de Santa Maria d'Ontinyent: recurs turístic
No full textRevert Belda, R. (2010). L'Església de Santa Maria d'Ontinyent: recurs turístic. Universitat Politècnica de València. https://riunet.upv.es/handle/10251/9626Archivo delegad
Aplicación del cálculo CFD de chorros gaseosos para la predicción del comportamiento de los chorros diésel de inyección directa
No full textProyecto confidencial (Riunet)Carmona Belda, R. (2014). Aplicación del cálculo CFD de chorros gaseosos para la predicción del comportamiento de los chorros diésel de inyección directa. https://riunet.upv.es/handle/10251/36962.Archivo delegad
Consolidación de la puesta en marcha de una nueva línea de negocio en la empresa "Color Muro, S.L."
No full textCantó Belda, R. (2006). Consolidación de la puesta en marcha de una nueva línea de negocio en la empresa "Color Muro, S.L.". https://riunet.upv.es/handle/10251/32390.Archivo delegad
Surface flux transport simulations: Effect of inflows toward active regions and random velocities on the evolution of the Sun's large-scale magnetic field
No full textAims. We aim to determine the effect of converging flows on the evolution of a bipolar magnetic region (BMR), and to investigate the role of these inflows in the generation of poloidal flux. We also discuss whether the flux dispersal due to turbulent flows can be described as a diffusion process.
Methods. We developed a simple surface flux transport model based on point-like magnetic concentrations. We tracked the tilt angle, the magnetic flux and the axial dipole moment of a BMR in simulations with and without inflows and compared the results. To test the diffusion approximation, simulations of random walk dispersal of magnetic features were compared against the predictions of the diffusion treatment.
Results. We confirm the validity of the diffusion approximation to describe flux dispersal on large scales. We find that the inflows enhance flux cancellation, but at the same time affect the latitudinal separation of the polarities of the bipolar region. In most cases the latitudinal separation is limited by the inflows, resulting in a reduction of the axial dipole moment of the BMR. However, when the initial tilt angle of the BMR is small, the inflows produce an increase in latitudinal separation that leads to an increase in the axial dipole moment in spite of the enhanced flux destruction. This can give rise to a tilt of the BMR even when the BMR was originally aligned parallel to the equator
Inflows towards active regions and the modulation of the solar cycle: A parameter study
No full textAims. We aim to investigate how converging flows towards active regions affect the surface transport of magnetic flux, as well as their impact on the generation of the Sun’s poloidal field. The inflows constitute a potential non-linear mechanism for the saturation of the global dynamo and may contribute to the modulation of the solar cycle in the Babcock-Leighton framework.
Methods. We build a surface flux transport code incorporating a parametrized model of the inflows and run simulations spanning several cycles. We carry out a parameter study to assess how the strength and extension of the inflows affect the build-up of the global dipole field. We also perform simulations with different levels of activity to investigate the potential role of the inflows in the saturation of the global dynamo.
Results. We find that the interaction of neighbouring active regions can lead to the occasional formation of single-polarity magnetic flux clumps that are inconsistent with observations. We propose the darkening caused by pores in areas of high magnetic field strength as a possible mechanism preventing this flux-clumping. We find that inflows decrease the amplitude of the axial dipole moment by ~ 30%, relative to a no-inflows scenario. Stronger (weaker) inflows lead to larger (smaller) reductions of the axial dipole moment. The relative amplitude of the generated axial dipole is about 9% larger after very weak cycles than after very strong cycles. This supports the idea that the inflows are a non-linear mechanism that is capable of saturating the global dynamo and contributing to the modulation of the solar cycle within the Babcock-Leighton framework
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
[Plano de Valencia] [Material gráfico] / Christ. Hyacint a Belda F
No full textInscripción: "Valencia de los Edetanos, vulgo del Cid delineado por el D.r Thomas Vicente Tosca Pto. de la r. Cong.n del Orat.o"Il. en: "Resumen Historial, de la fundación, i antigüedad de la Ciudad de Valencia de los Edetanos, vulgo del Cid". Por Pascual Esclapes de Guilló. Valencia, 1738Páez Repertorio, 240-
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
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