Search results for "cART"

La concepción gubernamental del desarrollo local en cuba, déficits y limitaciones

2016

Resumen . Cuba presenta una realidad politica, economica y social que en gran medida dificulta la aplicacion de politicas de desarrollo local. Esto se debe, fundamentalmente, al centralizador poder estatal; el que impide no solo la puesta en marcha de novedosos disenos de proyectos locales, sino que ademas impide a algunos de sus propios organismos llevar a termino tal cometido. El gobierno revolucionario instaurado en 1959 tuvo entre sus primeras medidas reducir la capacidad juridica de los municipios. En la decada de los anos 90, luego del derrumbe del campo socialista, el gobierno redirigio su politica economica para garantizar su supervivencia en el mundo capitalista. La reforma implico…

Estrategias para la enseñanza del lenguaje académico. Dominio desde la instrucción de las destrezas orales

2017

Resumen: La presencia cada vez más numerosa de estudiantes de movilidad procedentes de distintos países comunitarios y extracomunitarios en las aulas de nuestras universidades hace necesario habilitar un espacio curricular para ellos. No hay que olvidar que su presencia es parte de los objetivos marcados por el proyecto del Espacio Europeo de Enseñanza Superior (EEES); y una correcta integración de este tipo de alumnado respondería a las aspiraciones de internacionalización de la Universidad. La pretensión de esta propuesta es exponer el mecanismo de los cursos en los que a partir de la instrucción en las destrezas orales se establece la base para profundizar en el aprendizaje de la expresi…

Mapping evapotranspiration on vineyards: A comparison between Penman-Monteith and energy balance approaches for operational purposes

2012

Estimation of evapotranspiration (ET) in Sicilian vineyard is an emerging issue since these agricultural systems are more and more converted from rainfed to irrigated conditions, with significant impacts on the management of the scarce water resources of the region. The choice of the most appropriate methodology for assessing water use in these systems is still an issue of debating, due to the complexity of canopy and root systems and for their high spatial fragmentation. In vineyards, quality and quantity of the final product are dependent on the controlled stress conditions to be set trough irrigation. This paper reports an application of the well-known Penman-Monteith approach, applied i…

Une quête d'exactitude : machines, algèbre et géométrie pour la construction traditionnelle des équations différentielles

2015

In La Géométrie, Descartes proposed a “balance” between geometric constructions and symbolic manipulation with the introduction of suitable ideal machines. In particular, Cartesian tools were polynomial algebra (analysis) and a class of diagrammatic constructions (synthesis). This setting provided a classification of curves, according to which only the algebraic ones were considered “purely geometrical.” This limit was overcome with a general method by Newton and Leibniz introducing the infinity in the analytical part, whereas the synthetic perspective gradually lost importance with respect to the analytical one—geometry became a mean of visualization, no longer of construction. Descartes’s…

Long-term organic farming on a citrus plantation results in soil organic carbon recovery

2019

[ES] Se ha demostrado que el manejo del suelo bajo agricultura ecológica puede aumentar el contenido de carbono orgánico en el suelo moderando el incremento de los gases de efecto invernadero, pero hasta la fecha las evaluaciones cuantitativas basadas en mediciones a largo plazo han sido escasas, especialmente bajo condiciones mediterráneas. En esta investigación se examinaron los cambios en el contenido de carbono orgánico como respuesta a la agricultura ecológica con cobertura vegetal en una plantación de cítricos en el área mediterránea, utilizando una base de datos de 21 años. El incremento de contenido de carbono orgánico en el suelo fue más evidente tras cinco años desde el cambio del…

The Development of a new Philosophy of Physics in the 18th Century

2012

The study of books on physics published in the 18th century shows that the evolution since the 17th century is much more than just a furthering of the discoveries of Newton, as we often tend to present it these days. Descartes’s mechanistic physics, severely criticized by Newton, was to develop with help from many scientists, particularly from the Academy of Sciences in Paris. The discussions between Cartesians and Newtonians did not end in the 1740’s. This real scientific duel, which lasted over half a century, was the heart of a broader way of thinking about physics which operated on several levels: Mathématization, Concepts, définitions, laws, the role of experimentation and hypotheses, …

Expression patterns of matrix genes during human skeletal development.

1994

Plan de la victoria

El Pla es refereix a la creació d'un Exèrcit Popular Regular, les seves reserves, moral i austeritat de guerra, indústria bèl·lica, etc. A la part esquerra del text hi ha dibuixos de combatents, segadors de blat i obrers en els seus llocs de treball en la maquinària de les fàbriques de guerra

Mapping snow density through thermal inertia observations

2023

Snow, as a fundamental reservoir of freshwater, is a crucial natural resource. Specifically, knowledge of snow density spatial and temporal variability could improve modelling of snow water equivalent, which is relevant for managing freshwater resources in context of ongoing climate change. The possibility of estimating snow density from remote sensing has great potential, considering the availability of satellite data and their ability to generate efficient monitoring systems from space. In this study, we present an innovative method that combines meteorological parameters, satellite data and field snow measurements to estimate thermal inertia of snow and snow density at a catchment scale.…

Completely independent spanning trees in some regular graphs

2014

International audience; Let k >= 2 be an integer and T-1,..., T-k be spanning trees of a graph G. If for any pair of vertices {u, v} of V(G), the paths between u and v in every T-i, 1 <= i <= k, do not contain common edges and common vertices, except the vertices u and v, then T1,... Tk are completely independent spanning trees in G. For 2k-regular graphs which are 2k-connected, such as the Cartesian product of a complete graph of order 2k-1 and a cycle, and some Cartesian products of three cycles (for k = 3), the maximum number of completely independent spanning trees contained in these graphs is determined and it turns out that this maximum is not always k. (C) 2016 Elsevier B.V. All righ…