Results 21 to 30 of about 24,114 (290)

Threshold Dynamics of a Huanglongbing Model with Logistic Growth in Periodic Environments

open access: yesAbstract and Applied Analysis, 2014
We analyze the impact of seasonal activity of psyllid on the dynamics of Huanglongbing (HLB) infection. A new model about HLB transmission with Logistic growth in psyllid insect vectors and periodic coefficients has been investigated.
Jianping Wang   +3 more
doaj   +1 more source

Assessment of the Variational Quantum Eigensolver: Application to the Heisenberg Model

open access: yesFrontiers in Physics, 2022
We present and analyze large-scale simulation results of a hybrid quantum-classical variational method to calculate the ground state energy of the anti-ferromagnetic Heisenberg model.
Manpreet Singh Jattana   +6 more
doaj   +1 more source

The Achaemenid Expansion to the Indus and Alexander’s Invasion of North-West South Asia [PDF]

open access: yesIranian Journal of Archaeological Studies, 2012
There is a range of evidence that informs us about the organisation of the Achaemenid Empire, but our understanding ofthe eastern-most reaches of the empire, which lie within the bounds of modern-day Pakistan is relatively limited. Whilethere is evidence
Cameron Petrie, Peter Magee
doaj   +1 more source

On a Stochastic SEIS Model with Treatment Rate of Latent Population

open access: yesAbstract and Applied Analysis, 2014
The asymptotic dynamics of a stochastic SEIS epidemic model with treatment rate of latent population is investigated. First, we show that the system provides a unique positive global solution starting from the positive initial value.
Shujing Gao   +3 more
doaj   +1 more source

Calibrate, emulate, sample [PDF]

open access: yesJournal of Computational Physics, 2021
Many parameter estimation problems arising in applications are best cast in the framework of Bayesian inversion. This allows not only for an estimate of the parameters, but also for the quantification of uncertainties in the estimates. Often in such problems the parameter-to-data map is very expensive to evaluate, and computing derivatives of the map ...
Emmet Cleary   +4 more
openaire   +3 more sources

Dynamical Behavior of a Novel Impulsive Switching Model for HLB with Seasonal Fluctuations

open access: yesComplexity, 2018
This paper studies a new model for Huanglongbing with seasonal fluctuations. Switching coefficients and switching control schemes are considered in this model.
Shujing Gao   +3 more
doaj   +1 more source

Emulation of Sun-Induced Fluorescence from Radiance Data Recorded by the HyPlant Airborne Imaging Spectrometer

open access: yesRemote Sensing, 2021
The retrieval of sun-induced fluorescence (SIF) from hyperspectral radiance data grew to maturity with research activities around the FLuorescence EXplorer satellite mission FLEX, yet full-spectrum estimation methods such as the spectral fitting method ...
Miguel Morata   +4 more
doaj   +1 more source

Fast Gaussian Process Emulation of Mars Global Climate Model

open access: yesEarth and Space Science, 2023
The NASA Ames Mars Global Climate Model (MGCM) software has been in steady use at NASA for decades and was recently released to the public. This model simulates the complex interactions of various weather cycles that exist on Mars, namely the Dust Cycle,
Marc Tunnell   +2 more
doaj   +1 more source

Risk Propagation Model and Simulation of an Assembled Building Supply Chain Network

open access: yesBuildings, 2023
In recent years, the prefabricated building supply chain has received strong support from the government and has developed rapidly, but there are various risks in the operation process.
Yingchen Wang   +5 more
doaj   +1 more source

Modelling the Effects of Snail Control and Health Education in Clonorchiasis Infection in Foshan, China

open access: yesComplexity, 2019
Clonorchiasis is the most important food-borne parasitic disease in China. In this paper, a mathematical model of clonorchiasis sinensis is proposed to mimic its transmission dynamics to assess the effects of intervention strategies such as snail control,
Shujing Gao   +3 more
doaj   +1 more source

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