Results 61 to 70 of about 132,311 (233)

Investigation of non linear dynamics of an excitable magnetron sputtering plasma

Results in Physics, 2019
In this paper nonlinear dynamical behaviour of an excitable DC magnetron sputtering plasma has been investigated. Initially, plasma exhibited fixed point dynamics whereas with the increase in the discharge voltage, spikes were observed in the floating ...
Gopikishan Sabavath, Pankaj Kumar Shaw, A.N. Sekar Iyengar, I. Banerjee, S.K. Mahapatra   +4 more
doaj   +1 more source

Basic income and employment

The Scandinavian Journal of Economics, EarlyView.
Abstract We analyse the general equilibrium implications of introducing a universal basic income (UBI) for employment and income in an economy characterized by involuntary unemployment. Our framework allows tax revenues and workers' reservation wages to adjust endogenously with employment to satisfy the government's budget constraint.
Marta Aloi, Teresa Lloyd‐Braga
wiley   +1 more source

Anomaly Detection in Fractal Time Series with LSTM Autoencoders

Mathematics
This study explores the application of neural networks for anomaly detection in time series data exhibiting fractal properties, with a particular focus on changes in the Hurst exponent.
Lyudmyla Kirichenko, Yulia Koval, Sergiy Yakovlev, Dmytro Chumachenko   +3 more
doaj   +1 more source

Self-affine subglacial roughness: consequences for radar scattering and basal water discrimination in northern Greenland [PDF]

The Cryosphere, 2017
Subglacial roughness can be determined at a variety of length scales from radio-echo sounding (RES) data either via statistical analysis of topography or inferred from basal radar scattering.
T. M. Jordan, M. A. Cooper, D. M. Schroeder, C. N. Williams, J. D. Paden, M. J. Siegert, J. L. Bamber   +6 more
doaj   +1 more source

Children's Multiplicative Reasoning: Differences Across Grade Level and Tasks for Multiplication and Division

School Science and Mathematics, EarlyView.
ABSTRACT Multiplicative reasoning is a fundamental construct for children to engage meaningfully with multiplication and division. However, various reports suggest that elementary and middle school students in the United States lack the necessary multiplicative reasoning to engage in relevant topics.
Karl W. Kosko
wiley   +1 more source

Correlation between sample entropy and Hurst exponent, and ROC curves.

, 2014
(A) Linear regression curve estimation between the mean whole brain sample entropy and mean whole brain Hurst exponent for the whole population. (B) ROC curve for Sample entropy. (C) ROC curve for Hurst exponent.
Moses O. Sokunbi (563514), Gordon D. Waiter (563515), George G. Cameron (563516), Roger T. Staff (523721), Trevor S. Ahearn (499808), Douglas J. Steele (563517), Victoria B. Gradin (143358), Alison D. Murray (499809)   +7 more
core   +1 more source

Applications of physical methods in high-frequency futures markets [PDF]

, 2007
In the present work we demonstrate the application of different physical methods to high-frequency or tick-by-tick financial time series data. In particular, we calculate the Hurst exponent and inverse statistics for the price time series taken from a ...
Bartolozzi, M., Oliver, D., Chan, F, Di Matteo, Tiziana, Bartolozzi, M, Di Matteo, T., Oliver, David, Chan, F., Mellen, C., Oliver, D, Mellen, C, Aste, Tomaso, Bartolozzi, Marco, Aste, T   +13 more
core   +1 more source

Born early, age fast: Consequences of premature birth on chronic disease and accelerated ageing

The Journal of Physiology, EarlyView.
Abstract figure legend ELGANs are exposed to several postnatal pro‐oxidant stressors, including ambient and supplemental oxygen, mechanical ventilation, infections, hyperalimentation, excessive glucocorticoids and intermittent hypoxia. Since endogenous antioxidant defences are underdeveloped, this imbalance promotes oxidative stress and inflammation ...
Estelle B. Gauda, Julijana Ivanovska, Dwayne Mascarenhas, Jeffrey Antwi, Atefeh Mohammadi, Bonny Jasani   +5 more
wiley   +1 more source

A fast algorithm for robust estimates of the Hurst exponent when analyzing small samples of biometric and market data

Известия высших учебных заведений. Поволжский регион:Технические науки
Background. Currently, the Hurst exponent is quite easily interpreted in relation to biometric, medical and economic data, but it is customary to evaluate it on large samples.
V.I. Volchikhin, A.I. Ivanov, V.A. Tikhomirov, D.V. Tarasov   +3 more
doaj   +1 more source

Fractional Black–Scholes option pricing, volatility calibration and implied Hurst exponents in South African context

South African Journal of Economic and Management Sciences, 2017
Background: Contingent claims on underlying assets are typically priced under a framework that assumes, inter alia, that the log returns of the underlying asset are normally distributed.
Emlyn Flint, Eben Maré
doaj   +1 more source