Results 101 to 110 of about 18,886 (279)

Resource limitation and competition shape reproductive allocation and synchrony

Oikos, EarlyView.
The dynamics of reproductive allocation (RA) in herbaceous plant communities, particularly in response to varying environmental conditions such as drought stress and competitive interactions, remain underexplored. This study aims to fill this gap by hypothesising that both belowground resource limitation and the presence of dominant species ...
Jan Douda, Jana Doudová, Alena Havrdová   +2 more
wiley   +1 more source

Detrended fluctuation analysis of traffic data

, 2008
Different routing strategies may result in different behaviors of traffic on internet. We analyze the correlation of traffic data for three typical routing strategies by the detrended fluctuation analysis (DFA) and find that the degree of correlation of the data can be divided into three regions, i.e., weak, medium, and strong correlation.
Zhu, Xiaoyan, Liu, Zonghua, Tang, Ming
openaire   +2 more sources

Biogeochemical asymmetry and the diversification of tropical rain forests in Borneo: The endmember hypothesis

Functional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Mixed dipterocarp lowland tropical rain forests on Oxisols and Ultisols and heath forests on Spodosols are considered distinct vegetation types in Borneo. Here we present the endmember hypothesis of ecosystem diversification, which describes a continuum of forest ...
Kanehiro Kitayama, Ryoto Aoyagi, Shin‐ichiro Aiba, Rota Wagai, Benjamin L. Turner   +4 more
wiley   +1 more source

Arctic geese in newly colonised, colder breeding areas have higher spring body mass and breed earlier relative to the onset of spring

Journal of Animal Ecology, EarlyView.
Moving to colder areas allows arctic geese to reduce the negative effects of climate change (trophic mismatch), but this comes at a price for parents as they face harsher nesting conditions (snow cover), which only parents capable of large investments can cope with: climate change effects differ between individuals within populations.
Kees H. T. Schreven, Tom S. L. Versluijs, Michiel P. Boom, Fred Cottaar, Eckhart Kuijken, Jorma Pessa, Ingunn M. Tombre, Christine Verscheure, Jesper Madsen, Bart A. Nolet   +9 more
wiley   +1 more source

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

Addiction, EarlyView.
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

Measuring the time‐varying market efficiency in the prewar and wartime Japanese stock market, 1924–1943

Asia‐Pacific Economic History Review, Volume 65, Issue 1, Page 131-159, March 2025.
Abstract This study examines the adaptive market hypothesis in the prewar and wartime Japanese stock market using a new market capitalization‐weighted price index. First, we find that the degree of market efficiency varies over time and with major historical events. This implies that the hypothesis is supported in this market.
Kenichi Hirayama, Akihiko Noda
wiley   +1 more source

Three shades of self‐regulation with unique complex dynamics, drivers and targets for intervention

British Journal of Educational Technology, EarlyView.
Abstract Self‐regulated learning (SRL) is an active process involving multiple interacting components that evolve over time, exhibiting characteristics of complex systems such as non‐linearity, emergent behaviour, self‐organization, and hierarchy. These interactions unfold at different temporal levels, each warranting a dedicated lens to capture their ...
Sonsoles López‐Pernas, Miguel A. Conde, Mohammed Saqr   +2 more
wiley   +1 more source

An investigation into in‐sample and out‐of‐sample model selection for nonstationary autoregressive models

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract The stationary autoregressive model forms an important base of time‐series analysis in today's psychology research. Diverse nonstationary extensions of this model are developed to capture different types of changing temporal dynamics. However, researchers do not always have a solid theoretical base to rely on for deciding a‐priori which of ...
Yong Zhang, Anja F. Ernst, Ginette Lafit, Ward B. Eiling, Laura F. Bringmann   +4 more
wiley   +1 more source

Nonlinear analysis of electroencephalogram signals while listening to the holy Quran

Journal of Medical Signals and Sensors, 2019
Background: Electrical activity of the brain, resulting from electrochemical signaling between neurons, is recorded by electroencephalogram (EEG). The neural network has complex behavior at different levels that strongly confirms the nonlinear nature of ...
Mahsa Vaghefi, Ali Motie Nasrabadi, Seyed Mohammad Reza Hashemi Golpayegani, Mohammad Reza Mohammadi, Shahriar Gharibzadeh   +4 more
doaj   +1 more source

Detrended Fluctuation Analysis of Systolic Blood Pressure Control Loop

, 2009
We use detrended fluctuation analysis (DFA) to study the dynamics of blood pressure oscillations and its feedback control in rats by analyzing systolic pressure time series before and after a surgical procedure that interrupts its control loop. We found,
, Afifi A K, Bernardi L, C E C Galhardo, Carretta R, da Silva Soares P P, Echeverría J C, Eke A, Galhardo C E C Penna T J P de Menezes M A Soares P P, Guyton A C, Jacob F, Krieger E M, Langewitz W, M Argollo de Menezes, Mancia G, P P S Soares, Pagani M, Pagani M, Press W, Schreihofer A M, Smyth H S, T J P Penna, Virginia L B   +22 more
core   +1 more source