Results 31 to 40 of about 134,237 (204)

Long Range Correlation in Vegetation Over West Africa From 1982 to 2011

IEEE Access, 2019
Satellite-derived Normalized Difference Vegetation index (NDVI) data records offer important sources for long term correlation modelling over West Africa.
Tertsea Igbawua, Jiahua Zhang, Fengmei Yao, Shahzad Ali   +3 more
doaj   +1 more source

Cascade-Driven Series with Narrower Multifractal Spectra Than Their Surrogates: Standard Deviation of Multipliers Changes Interactions across Scales

Complexity, 2017
Multifractal (or singularity) spectra widths w allow diagnosing cascade structure through comparing original series’ widths wOrig to surrogate series’ widths wSurr.
Jun Taek Lee, Damian G. Kelty-Stephen
doaj   +1 more source

Multifractal Detrended Fluctuation Analysis Combined with Allen–Cahn Equation for Image Segmentation

Fractal and Fractional
This study proposes a novel image segmentation method, MF-DFA combined with the Allen–Cahn equation (MF-AC-DFA). By utilizing the Allen–Cahn equation instead of the least squares method employed in traditional MF-DFA for fitting, the accuracy and ...
Minzhen Wang, Yanshan Wang, Renkang Xu, Runqiao Peng, Jian Wang, Junseok Kim   +5 more
doaj   +1 more source

Comparison of waking EEG between MF-DFA and WTMM.

, 2013
For 14 subjects with 8 m of EEG from waking data per subject, MF-DFA and WTMM spectra were calculated for each 8 m EEG series. Average multifractal spectra for each technique shown here were calculated by averaging individual spectra across subjects ...
Todd Zorick (429928), Mark A. Mandelkern (429929)   +1 more
core   +1 more source

Comparison between MF-DFA spectra of from waking and sleep stage 2.

, 2013
For 14 subjects with 8 m of EEG from both waking and sleep stage 2 per subject, EEG was divided into 16 segments of 30 s each, and MF-DFA spectra were calculated for each segment (224 segments for each state of consciousness).
Todd Zorick (429928), Mark A. Mandelkern (429929)   +1 more
core   +1 more source

Quantitative assessment of Heart Rate Dynamics during meditation: An ECG based study with Multi-fractality and visibility graph

Frontiers in Physiology, 2016
: Abstract: The cardiac dynamics during meditation is explored quantitatively with two chaos-based non-linear techniques viz. multi-fractal detrended fluctuation analysis and visibility network analysis techniques.
Anirban eBhaduri, Dipak eGhosh, Dipak eGhosh   +2 more
doaj   +1 more source

Embedding Climate Action: Policy Integration and Semantic Coherence in Ireland's SDGs Policy Mix

Sustainable Development, EarlyView.
ABSTRACT Achieving the EU's 2050 target of climate neutrality requires embedding climate action (SDG13) within national sustainable development strategies. While inter‐governmental coordination and policy linkages are central to policy integration and coherence, existing studies rarely examine them in tandem.
Paul M. Wagner, Florence Metz, Aminu Bature   +2 more
wiley   +1 more source

Individual subject data for 8 min waking EEG MF-DFA spectra.

, 2013
Individual subject data for 8 min waking EEG MF-DFA spectra.
Todd Zorick (429928), Mark A. Mandelkern (429929)   +1 more
core   +1 more source

Detection of Pipeline Leaks Using Fractal Analysis of Acoustic Signals

Fractal and Fractional
In this paper, the possibility of using monofractal and multifractal analysis of acoustic signals of pipelines to detect leaks is considered. An experimental stand has been created to study the fractal characteristics of acoustic signals of pipelines ...
Ayrat Zagretdinov, Shamil Ziganshin, Eugenia Izmailova, Yuri Vankov, Ilya Klyukin, Roman Alexandrov   +5 more
doaj   +1 more source

Bisphenols and Phthalates in Bottled Mineral Water: First Evidence of Co‐Occurrence, Estrogenic Activity, and Health Risk in Brazil

Environmental Toxicology, EarlyView.
ABSTRACT Bisphenol A (BPA), its structural analogs, and phthalates are synthetic chemicals widely used, with documented endocrine‐disrupting activity. This study aimed to develop and validate a selective multiresidue analytical method for the simultaneous determination of BPA, 10 bisphenol analogs, and six phthalates in PET‐bottled mineral water.
Giulia Boito Reyes, Lucas Correia Gonçalves, Fernanda Cristina Iba Molinari, José Eduardo Gonçalves   +3 more
wiley   +1 more source