885 resultados para PARTICLE CREATION


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The present text holds as its main goal the advance of a number of reflections around the potentialities and problems of local museums taken as development instruments. Secondarily, it also intends to provide support to all those who, in one way or another, have faced the issue of creating a local museum. This support is intended not as a manual of the “the museum made easy” kind, but, instead, as the pointing to some pertinent issues and unavoidable options that, if not taken into account, will come to challenge the form and substance of the future organisation.

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The purpose of this study was to create a digital portfolio that was practical and effective for both teachers and parents.

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This plea for changes in the way epidemiology is practiced presumes a progressive spirit among many readers, sharing a desire and in a position to serve humanity. The criteria used to begin this study of our role in the development of epidemiology is not simply a matter of technocratic formulae, but is based, rather on a committed point of view about the human dimension in the development of epidemiology. The aim is to generate propositions that will eliminate processes that destroy and threaten human life, promoting, instead, supportive measures and processes to protect society, the family and the individual.

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The financial crisis has exposed the need to devise stronger and broader international and regional safety nets in order to deal with economic and financial shocks and allow for countries to adjust. The euro area has developed several such mechanisms over the last couple of years through a process of trial and error and gradual enhancement and expansion. Their overall architecture remains imperfect and leaves areas of vulnerabilities. This paper provides an overview of the recent financial stability mechanisms and their various shortcomings and tries to brush the outline of a more comprehensive safety net architecture that would coherently address the banking, sovereign and external imbalances crises against both transitory and more permanent shocks. It aims to provide a roadmap for further improvements of the current mechanism and the creation of new devices including a banking resolution mechanism and amore powerfulmechanismto provide financial assistance addressing both the sovereign and external dimensions of the shocks thereby reducing the need for the ECB to fill the current void.

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Vertically pointing Doppler radar has been used to study the evolution of ice particles as they sediment through a cirrus cloud. The measured Doppler fall speeds, together with radar-derived estimates for the altitude of cloud top, are used to estimate a characteristic fall time tc for the `average' ice particle. The change in radar reflectivity Z is studied as a function of tc, and is found to increase exponentially with fall time. We use the idea of dynamically scaling particle size distributions to show that this behaviour implies exponential growth of the average particle size, and argue that this exponential growth is a signature of ice crystal aggregation.