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This paper provides evidence for scaling laws in emerging stock markets. Estimated parameters using different … definitions of volatility show that the empirical scaling law in every stock market is a power law. This power law holds from 2 to … 240 business days (almost 1 year). The scaling parameter in these economies changes after a change in the definition of …
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Asset returns conforming to a Gaussian random walk are characterised by the temporal independence of the moments of the distribution. Employing currency returns, this note demonstrates the conditions that are necessary for risk to be estimated in this manner.
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the scaling properties of the magnitude series and the sign series using the increment time series of cardiac interbeat …
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