Results 21 to 30 of about 23,472 (239)
Ecology and Evolution, 2020 While biological distributions are not static and change/evolve through space and time, nonstationarity of climatic and land‐use conditions is frequently neglected in species distribution models.
Pietro Milanesi +2 more
doaj +1 more source
Daily minimum and maximum temperature simulation over complex terrain [PDF]
, 2013 Spatiotemporal simulation of minimum and maximum temperature is a fundamental requirement for climate impact studies and hydrological or agricultural models.
Katz, Richard W. +2 more
core +1 more source
NONSTATIONARITY-EXTENDED WHITTLE ESTIMATION [PDF]
Econometric Theory, 2009 For long memory time series models with uncorrelated but dependent errors, we establish the asymptotic normality of the Whittle estimator under mild conditions. Our framework includes the widely used fractional autoregressive integrated moving average models with generalized autoregressive conditional heteroskedastic-type innovations.
openaire +2 more sources
Frontiers in Ecology and Evolution, 2023 Species distribution models (SDMs) have been widely employed to evaluate species–environment relationships. However, when extrapolated over broad spatial scales or through time, these models decline in their predictive ability due to variation in how ...
Peter D. Billman +5 more
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Scale Invariance in the Nonstationarity of Physiological Signals [PDF]
, 2000 We introduce a segmentation algorithm to probe temporal organization of heterogeneities in human heartbeat interval time series. We find that the lengths of segments with different local values of heart rates follow a power-law distribution.
A. Arneodo +24 more
core +2 more sources
Nonstationarity and Portfolio Choice [PDF]
The Journal of Financial and Quantitative Analysis, 1976 In this paper some effects of nonstationary parameters upon inferences and decisions in portfolio analysis are investigated. A Bayesian inferential model with nonstationary parameters is presented and is applied to the problem of portfolio choice. For this model, nonstationarity 1) implies greater uncertainty about future returns; 2) implies that in ...
Christopher B. Barry, Robert L. Winkler
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Modeling Non-Stationary Processes Through Dimension Expansion [PDF]
, 2011 In this paper, we propose a novel approach to modeling nonstationary spatial fields. The proposed method works by expanding the geographic plane over which these processes evolve into higher dimensional spaces, transforming and clarifying complex ...
Bornn, Luke +2 more
core +4 more sources
Screening for nonstationary analysis
Water Policy, 2021 Adjustments in the designs of water resources systems due to climate change and other nonstationarities are warranted because the benefits of effective adaptation are well recognized.
Paul H. Kirshen
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Modified Bloch equations in presence of a nonstationary bath [PDF]
, 1999 Based on the system-reservoir description we propose a simple solvable microscopic model for a nonequilibrium bath. This captures the essential features of a nonstationary quantum Markov process.
Banik, Suman Kumar +3 more
core +2 more sources
Frontiers in Water, 2020 National and international security communities (e.g., U.S. Department of Defense) have shown increasing attention for innovating critical infrastructure and installations due to recurring high-profile flooding events in recent years.
Hongxiang Yan +4 more
doaj +1 more source