In this paper numerical results are reviewed ([13]) that demonstrate that common second-order operator-splitting methods can exhibit instabilities when integrating the Brusselator equations out to moderate times of about seven periods of oscillation. These instabilities are manifested as high wave number spatial errors. In this paper we further analyze this problem and present a theorem for sta...

OBJECTIVE To detect, with a computerised postural sway measurement system, any significant deviation of postural sway parameters among lead workers compared with a control group. METHODS Postural stability was investigated with a computerised postural sway measurement system in 60 workers exposed to lead with a duration of exposure of 84 (range 3-366) months and 60 controls. Sway parameter da...

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Présentation mise à disposition dans l'attente de la parution du volume aux éditions Cassini

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The frequency of corrective signal (the centre of corrective (COC) signal), which is the decomposition of COP (centre of pressure) and estimated COM (centre of mass) time series, is one of the indicators reflecting the quality of postural control during stance. Young children, in the period of intensive development, gradually improve the quality of postural control in a daily life. The purpose ...

The goal of this paper is to evaluate cryogenics-based energy storage concepts: A thermo-electric energy storage unit, which uses surplus electricity while liquefying a gas, subsequently stored at cryogenic temperature. Here we review and evaluate concepts for power generation while regasifying the liquefied gas (cryogen) using an exergetic analysis. Two cold exergy recovery cycle configuration...

The Internet catalogue is a very easy and comfortable way of retrieving adequate literature and a practical technique for distance booking for interesting items in the library. The Main Library and Scientific Information Centre of the Wroc aw University of Technology has used the electronic catalogues since 1978 and since 1995 they have also been available in the Internet network. In this paper...

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