Results 131 to 140 of about 18,134 (280)

Generalized Structure Functions and Multifractal Detrended Fluctuation Analysis Applied to Vegetation Index Time Series: An Arid Rangeland Study. [PDF]

Entropy (Basel), 2021
Sanz E, Saa-Requejo A, Díaz-Ambrona CH, Ruiz-Ramos M, Rodríguez A, Iglesias E, Esteve P, Soriano B, Tarquis AM.   +8 more
europepmc   +1 more source

ESG Thematic Bonds in Emerging Markets: Risk, Uncertainty, and Ambiguity

European Financial Management, EarlyView.
ABSTRACT We examine the impact of risk aversion, ambiguity, and uncertainty (geopolitical and economic) on the ESG thematic bond markets in emerging countries. We analyze ESG sovereign (both USD and local currency denominated) and corporate bond markets on the aggregate and regional levels.
Nebojsa Dimic, Vanja Piljak, Laurens Swinkels, Milos Vulanovic   +3 more
wiley   +1 more source

Assessing soil and native high Andean grassland quality under grazing: A case study from the wet Puna of Peru

Grassland Science, EarlyView.
Abstract High Andean grasslands are vulnerable to changes in their nutritional quality and carbon sequestration capacity, especially in grazing systems. This study evaluated soil quality and native grasses by measuring carbon, physicochemical parameters, and the nutritional quality of predominant species in the wet Puna of Junín, Peru.
Alberto Arias‐Arredondo, Wendy E. Pérez, Sphyros Lastra, Juancarlos Cruz, Richard Solórzano‐Acosta, Cecilia Turín   +5 more
wiley   +1 more source

Prevalence of Dental Caries in Persons With or Without Long‐Term Experience of Positive Airway Pressure‐Treated Obstructive Sleep Apnoea

International Journal of Dental Hygiene, EarlyView.
ABSTRACT Oral dryness is common in persons with untreated obstructive sleep apnoea (OSA) as well as in those using positive airway pressure (PAP). OSA with or without PAP treatment could therefore be a risk factor of dental caries. Objectives To describe and compare the prevalence of dental caries among persons with or without PAP‐treated OSA.
H. Ahonen, K. Berggren, C. Kvarnvik, O. Sunnergren, U. Lindmark, A. Broström, M. Stensson   +6 more
wiley   +1 more source

Rescaled Range Analysis and Detrended Fluctuation Analysis: Finite Sample Properties and Confidence Intervals [PDF]

We focus on finite sample properties of two mostly used methods of Hurst exponent H estimation—rescaled range analysis (R/S) and detrended fluctuation analysis (DFA).
Ladislav Krištoufek
core   +1 more source

One‐Way Versus Two‐Way Postacquisition Integration Efforts: Theory and Evidence

Journal of Economics &Management Strategy, EarlyView.
ABSTRACT We develop a theory of postacquisition integration that distinguishes between one‐way (acquirer‐only) and two‐way (mutual) effort strategies. We argue that the method of payment—cash versus shares—may serve as an ex ante commitment mechanism to a particular integration strategy, where cash deals align with unilateral effort, and share deals ...
Albert Banal‐Estañol, Joseph A. Clougherty, Jo Seldeslachts, Florian Szücs   +3 more
wiley   +1 more source

Tree growth response and adaptation to climate change and climate extremes: From canopy to stem

Journal of Integrative Plant Biology, EarlyView.
This review synthesizes the responses and adaptations of tree growth, including canopy phenology, intra‐annual wood formation dynamics, and annual stem growth, to climate change and climate extremes. It highlights key knowledge gaps for future research to support sustainable forest management and enhance forest carbon storage under ongoing climate ...
Feiyu Yang, Leyao Zhu, Jiahao Cao, Fei Yang, Borbála Codogno, Qianqian Ma, Hanxue Liang, Wenjin Wang, Jian‐Guo Huang   +8 more
wiley   +1 more source

An Electroencephalographic Study of Sleep Spindle and Infraslow Oscillation in Children With Autism Spectrum Disorder

Journal of Sleep Research, EarlyView.
ABSTRACT We investigated whether sleep microstructures show spatial differences in young children with autism compared with typically developing peers. 32‐channel electroencephalography (EEG) during natural sleep after 5–6 h of partial sleep deprivation was recorded from 53 children (26 with autism, 27 typically developing; 1.1–5.1 years).
Kevin Liu, Binbin Sun, Bryan K. Wang, Jonathan Chen, M. Brandon Westover, Fu‐Ying Tian, Haoqi Sun, Xue‐Jun Kong   +7 more
wiley   +1 more source

The Effect of Rehabilitation Exercises on Time Series Correlation in Gait of Anterior Cruciate Ligament Deficient Patients

Journal of Rehabilitation, 2012
Objective: In this research the effect of perturbation training on correlation index of detrended fluctuation analysis index (&alpha) of anterior cruciate ligament deficient (ACL) patients was evaluated using nonlinear dynamic methods.
Mohammad Ali Sanjari, Ali Ashraf Jamshidi, Leila Abbasi, Saeedeh Seyyed-Mohseni, Mohammad Kamali   +4 more
doaj  

Extremely Fast Maximum Likelihood Estimation of High‐Order Autoregressive Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT We consider the problem of exact maximum likelihood estimation of potentially high‐order (p>50$$ p>50 $$) autoregressive models. We propose an extremely fast coordinate‐wise algorithm for fitting autoregressive models. This fast algorithm exploits several properties of the negative log‐likelihood when parameterised in terms of partial ...
Daniel F. Schmidt, Enes Makalic
wiley   +1 more source