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Polysystem methodology elaborated for comprehensive analysis of geographical
objects
considers them as interrelated systems of different types. Each systematic
interpretation of a
territorial object is formed as a theory describing this object with a special
language used for construction
of a certain type of models. This paper proposes new methods to develop
geographical
models and describes several types of systematic models constructed by these
methods.
This article recalls the results given by A. Dutrifoy, A. Majda and S. Schochet in [1] in which they prove an uniform estimate of the system as well as the convergence to a global solution of the long wave equations as the Froud number tends to zero. Then, we will prove the convergence with weaker hypothesis and show that the life span of the solutions tends to infinity as the Froud number tends to zero.
Los campos escalares, bidimensionales y dependientes del tiempo, se representan generalmente en Meteorología mediante una sucesión de imágenes o análisis separados con una interdistancia temporal adecuada. Esta técnica alcanza su máximo desarrollo en lo que se conoce como gráfico animado.En el presente artículo se describen brevemente los procesos que, a partir de los datos, culminan con la generación de un análisis, imagen o fotograma, particularizando al caso de episodios de lluvia. Tras un resumen...
The seasonality hypothesis states that climates characterized by
large annual cycles select for large body sizes. In order to study
the effects of seasonality on the evolution of body size, we use a
model that is based on physiological rules and first principles. At
the ecological time scale, our model results show that both larger
productivity and seasonality may lead to larger body sizes. Our
model is the first dynamic and process-based model to support the
seasonality hypothesis and hence...
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