Results 111 to 120 of about 19,320 (310)

Application of Multifractal Measures to Tehran Price Index

, 2004
We report an empirical study of Tehran Price Index (TEPIX). To analyze our data we use various methods like as, rescaled range analysis ($R/S$), modified rescaled range analysis (Lo's method), Detrended Fluctuation Analysis (DFA) and generalized Hurst ...
Barabasi, Bouchaud, Challet, Challet, Cont, Costa, Dacorogna, Fama, Feder, Flandrin, Giardina, Grau-Carles, Ivanov, Jefferies, Lo, Lux, Mandelbrot, Mantegna, Mantegna, Openg, Peng, Peters, Skjeltorp, Teverovsky   +23 more
core   +1 more source

An opportunity index to anticipate when subseasonal predictions are useful

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Simultaneously active subseasonal windows of forecast opportunity can be combined into a single opportunity index, which can be used operationally to anticipate enhanced or reduced subseasonal prediction skill. For predictions of temperature anomalies in Switzerland during summer—a region and season with particularly low predictability—skill can nearly
Dominik Büeler, Maria Pyrina, Adel Imamovic, Christoph Spirig, Daniela I. V. Domeisen   +4 more
wiley   +1 more source

Diagnosing the 11‐year solar cycle's influence on the East Atlantic pattern

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A previously unidentified solar‐cycle response in the East Atlantic pattern is found in late winter at lag +3 years with larger amplitude than the NAO response. A statistically significant NAO response to the solar cycle is seen in late winter at lag 0 years.
Stergios Misios, Paula L. M. Gonzalez, Lesley J. Gray, Scott Osprey, Hedi Ma   +4 more
wiley   +1 more source

Alpha band oscillations in common synaptic input are explanatory of the complexity of isometric knee extensor muscle torque signals

Experimental Physiology
We investigated whether the strength of oscillations in common synaptic input was explanatory of knee extensor (KE) torque signal complexity during fresh and fatigued submaximal isometric contractions, in adults aged from 18 to 90 years.
Christopher R. J. Fennell, Alexis R. Mauger, James G. Hopker   +2 more
doaj   +1 more source

Analysis of Indian Foreign Exchange Markets: A Multifractal Detrended Fluctuation Analysis (MFDFA) Approach

International Journal of Empirical Economics
The objectives of this paper are to analyse the presence of multifractality in daily exchange rates of the US dollar (USD), British Pound (GBP), Euro (EUR), and Japanese Yen (JPY) relative to the Indian Rupee (INR) for a specific period (1999–2018) and ...
Radhika Prosad Datta
doaj   +1 more source

Multifractal detrended fluctuation analysis of insole pressure sensor data to diagnose vestibular system disorders. [PDF]

Biomed Eng Lett, 2023
Günaydın B, İkizoğlu S.
europepmc   +1 more source

Evaluating anisotropy‐based Monin–Obukhov similarity theory over canopies and complex terrain

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study shows that an anisotropy‐based generalization of Monin–Obukhov surface‐layer scaling (SC23) applies readily across a wide range of atmospheric conditions with variable terrain, canopies, and land‐cover complexity. This work focuses on the scaling of velocity variances for 7 years at the 47 sites in the National Ecological Observation Network
Tyler S. Waterman, Ivana Stiperski, Nathaniel Chaney, Marc Calaf   +3 more
wiley   +1 more source

Impact of data assimilation on Arctic sea‐ice thickness variability and its coupling with atmospheric forcing

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We document for the first time how the assimilation of CS2SMOS observations improves the model representation of Arctic sea‐ice thickness (SIT) and its variability: biases are reduced (top row), while excessive variability in the Beaufort Sea and lack of variability in the ice pack are both corrected (bottom row).
Jiping Xie, Yue Ying, Richard Davy, Laurent Bertino   +3 more
wiley   +1 more source

Correlação em séries temporais de temperatura na região de Cascavel, Estado do Paraná = Correlation in temperature time series in Cascavel, Paraná State

Acta Scientiarum: Technology, 2007
Temperaturas podem ser correlacionadas por funções tipo leis de potência, e o termo de persistência pode ser caracterizado por uma função de autocorrelação C(t) de variações de temperatura, e t é o tempo entre as observações. Esta função decai como C(t) ~
Isabel Tamara Pedron
doaj  

Radio Frequency Fingerprinting for WiFi Authentication Based on Detrended Fluctuation Analysis

IET Information Security
Traditional physical-layer authentication (PLA) approaches primarily rely on a limited set of hardware features, which restricts their robustness and accuracy in dynamic wireless environments.
Shuguang Wang, Songyan Li, Tingjia Liu, Shuangrui Zhao, Jiandong Wang, Yulong Shen   +5 more
doaj   +1 more source