Results 31 to 40 of about 4,148,793 (318)
Solving time-fractional diffusion equations with singular source term [PDF]
arXiv, 2022 This article deals with time-fractional diffusion equations with time-dependent singular source term. Whenever the order of the time-fractional derivative is either multi-term, distributed or space-dependent, we prove that the system admits a unique weak solution enjoying a Duhamel representation, provided that the time-dependence of the source term is
arxiv
Solutions to viscous Burgers equations with time dependent source term
Electronic Journal of Differential Equations, 2021 We study the existence and uniqueness of weak solutions for a Cauchy problem of a viscous Burgers equation with a time dependent reaction term involving Dirac measure.
Satyanarayana Engu +2 more
doaj
TAFFNet: Time‐Aware Adaptive Feature Fusion Network for Very Short‐Term Precipitation Forecasts
Geophysical Research Letters, 2023 Deep learning models based on radar echo extrapolation have been widely used in precipitation nowcasting. However, they face the challenge of insufficient input information when extending the forecast lead time, requiring the incorporation of physics ...
Jingnan Wang +4 more
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On the error in the two-term Weyl formula for the Dirichlet Laplacian [PDF]
, 2020 We study the optimality of the remainder term in the two-term Weyl law for the Dirichlet Laplacian within the class of Lipschitz regular subsets of $\mathbb{R}^d$. In particular, for the short-time asymptotics of the trace of the heat kernel we prove that the error term cannot be made quantitatively better than little-$o$ of the second term.
arxiv +1 more source
Arrival Time from Hamiltonian with Non-Hermitian Boundary Term
UniverseIn this study, we developed a new method for finding the quantum probability density of arrival at the detector. The evolution of the quantum state restricted to the region outside of the detector is described by a restricted Hamiltonian that contains a ...
Tajron Jurić, Hrvoje Nikolić
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Short Term Prediction of PM10 Concentrations Using Seasonal Time Series Analysis
MATEC Web of Conferences, 2016 Air pollution modelling is one of an important tool that usually used to make short term and long term prediction. Since air pollution gives a big impact especially to human health, prediction of air pollutants concentration is needed to help the local ...
Hamid Hazrul Abdul +4 more
doaj +1 more source
TIME BOUNDARY TERMS AND DIRAC CONSTRAINTS [PDF]
International Journal of Modern Physics A, 2012 Time boundary terms usually added to action principles are systematically handled in the framework of Dirac's canonical analysis. The procedure begins with the introduction of the boundary term into the integral Hamiltonian action and then the resulting action is interpreted as a Lagrangian one to which Dirac's method is applied.
openaire +3 more sources
Long-term Recall of Time to Pregnancy [PDF]
Epidemiology, 2016 Despite the widespread use of retrospectively reported time to pregnancy to evaluate fertility either as an outcome or as a risk factor for chronic disease, only two small studies have directly compared prospective data with later recall.The North Carolina Early Pregnancy Study (1982-1986) collected prospective time-to-pregnancy data from the beginning
D. Robert McConnaughey +4 more
openaire +2 more sources
Hybrid linear time series approach for long term forecasting of crop yield
The Indian Journal of Agricultural Sciences, 2018 Long term forecasting of crop production is required to establish long term vision, say by 2025, to meet growing demand of population at that point of time. Existing univariate linear time series ARIMA approach is valid for short term forecast only.
WASI ALAM +6 more
doaj +1 more source
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2018 See Article by Khot et ...
Andrew E. Levy, Larry A. Allen
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