Results 31 to 40 of about 629 (156)

The role of cardiac acoustic biomarkers in monitoring patients with heart failure: A systematic literature review

ESC Heart Failure, Volume 12, Issue 2, Page 980-997, April 2025.
Abstract Heart failure (HF) creates a considerable clinical, humanistic and economic burden on patients and caregivers as well as on healthcare systems. To attenuate the significant burden of HF, there is a need for enhanced management of patients with HF.
Javed Butler, Malcolm Brown, Philippe Prokocimer, Ashley C. Humphries, Sophie Pope, Olivia Wright, Jun Su, Osama Elnawasany, Bogdan Muresan   +8 more
wiley   +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

Exploratory Analysis of Sustainable Consumption and Production Factors in Services: Insights From Four Case Studies Using Interpretive Structural Modeling

Sustainable Development, EarlyView.
ABSTRACT This study investigates how 14 sustainable consumption and production (SCP) factors interact across four service categories—Mass Service, Professional Service, Service Factory, and Service Shop—using interpretive structural modeling (ISM). ISM enables the identification and hierarchical classification of interdependencies among SCP factors in ...
Amanda Duarte Feitosa, Fagner José Coutinho de Melo, André Philippi Gonzaga de Albuquerque, Naia Antunis de Rezende, Denise Dumke de Medeiros   +4 more
wiley   +1 more source

Propriedades Multifractais da Temperatura do Ar Diária no Nordeste do Brasil

Revista Brasileira de Meteorologia
Resumo A investigação da dinâmica das variáveis climáticas fornece informações importantes sobre a sua variabilidade espaço-temporal. Compreender esses processos é fundamental para o desenvolvimento de modelos climáticos que sirvam de base para a análise
André Luis Santana Santos, Hérica Santos da Silva, José Rodrigo Santos Silva, Tatijana Stosic   +3 more
doaj   +1 more source

Price Appreciation and Roughness Duality in Bitcoin: A Multifractal Analysis

Mathematics, 2021
Since its launch in 2009, bitcoin has thrived, attracting the attention of investors, regulators, academia, and the public in general. Its price dynamics, characterized by extreme volatility, severe jumps, and impressive long-term appreciation, suggest ...
Cristiana Vaz, Rui Pascoal, Helder Sebastião   +2 more
doaj   +1 more source

Multifractal Analysis on the Return Series of Stock Markets Using MF-DFA Method [PDF]

, 2014
Analyzing the daily returns of NASDAQ Composite Index by using MF-DFA method has led to findings that the return series does not fit the normal distribution and its leptokurtic indicates that a single-scale index is insufficient to describe the stock price fluctuation. Furthermore, it is found that the long-term memory characteristics are a main source
Wang, Wanting, Liu, Kecheng, Qin, Zheng
openaire   +2 more sources

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

Revisiting efficiency in MENA stock markets during political shocks: evidence from a multi-step approach

Heliyon, 2021
In this paper, we attempt to investigate the efficiency of emerging stock markets by considering the advent of dramatic country-specific events. In other words, we analyze and rank the weak-form efficiency levels of emerging stock markets based on a ...
Besma Hkiri, Azza Béjaoui, Cheima Gharib, Hashem A. AlNemer   +3 more
doaj   +1 more source

Electrophysiological sexual dimorphism as an early risk marker of alcohol use in adolescence: A longitudinal neuroimaging study

Addiction, Volume 121, Issue 3, Page 606-616, March 2026.
Abstract Aims To identify the brain activity profiles associated with alcohol consumption and to address its causes. Furthermore, we sought to examine the relationship between these electrophysiological markers and the excitation–inhibition balance, as well as to explore the potential moderating role of sex in these associations.
Alberto del Cerro‐León, Marcos Uceta, Danylyna Shpakivska‐Bilan, Isabel Suárez‐Méndez, Héctor Peribáñez‐Baz, Pablo Cuesta, Ricardo Bruña, Luis M. García‐Moreno, Fernando Maestú, Luis Fernando Antón‐Toro   +9 more
wiley   +1 more source

Analysis of the Informational Efficiency of the EU Carbon Emission Trading Market: Asymmetric MF-DFA Approach

Energies, 2020
This study explores the degree and change of informational efficiency of the European Union (EU) carbon emission trading market using an asymmetric multifractal detrended fluctuation analysis (A-MF-DFA) method, which allows asymmetry.
Yun-Jung Lee, Neung-Woo Kim, Ki-Hong Choi, Seong-Min Yoon   +3 more
doaj   +1 more source