Results 131 to 140 of about 652,852 (288)

Dynamic Reconstruction of Atomically Dispersed Copper Catalysts for CO2 Reduction: From In Situ Observations to Rational Design

open access: yesEcoEnergy, EarlyView.
Dynamic reconstruction transforms atomically dispersed Cu catalysts into authentic working‐state active phases during CO2 electroreduction. By integrating operando characterization, multiscale simulations, and AI‐assisted predictive modeling, this review establishes a framework for understanding, predicting, and rationally engineering catalyst ...
Jin Liu, Yue‐Wen Fang
wiley   +1 more source

Increase in plant productivity in the tundra in Sweden is not related to increasing presence of warm‐adapted vascular plant species

open access: yesEcography, EarlyView.
Over the past decades, Arctic and alpine biomes have warmed faster than the global average. Substantial vegetation changes have been reported as a response to this warming, including increased productivity and the spread of warm‐adapted (thermophilic) species that are less resistant to grazing pressure into higher latitudes and altitudes.
Tim Horstkotte   +4 more
wiley   +1 more source

Persistence and extinction for stochastic logistic model with Levy noise and impulsive perturbation

open access: yesElectronic Journal of Differential Equations, 2015
This article investigates a stochastic logistic model with Levy noise and impulsive perturbation. In the model, the impulsive perturbation and Levy noise are taken into account simultaneously.
Chun Lu, Qiang Ma, Xiaohua Ding
doaj  

A Probabilistic Fractional Order Physics Informed Mamba Kolmogorov‐Arnold Network for State‐of‐Charge Estimation in Grid‐Connected Battery Energy Storage Systems

open access: yesEnergy Science &Engineering, EarlyView.
This paper introduces the probabilistic fractional‐order Mam‐KAN (PFO‐Mam‐KAN) controller, a physics‐informed gray‐box framework for real‐time battery state‐of‐charge estimation. By unifying efficient Mamba encoders with uncertainty‐aware fractional physics, it achieves superior 0.31% RMSE accuracy and robust grid‐support operation under dynamic ...
Arun Kumar Rawat   +2 more
wiley   +1 more source

Asymptotic behavior of stochastic Gilpin-Ayala mutualism model with jumps

open access: yesElectronic Journal of Differential Equations, 2013
This article concerns the study of stochastic Gilpin-Ayala mutualism models with white noise and Poisson jumps. Firstly, an explicit solution for one-dimensional Gilpin-Ayala mutualism model with jumps is obtained and the asymptotic pathwise behavior ...
Xinhong Zhang, Ke Wang
doaj  

On the Minimum Value of the Permanent of a Nearly Decomposable Doubly Stochastic Matrix

open access: yesLinear Algebra and its Applications, 1980
AbstractLet A be a minimizing matrix for the permanent over the face of Ωn determined by a fully indecomposable matrix. It is shown that A is fully indecomposable and positive elements of A have permanental minors equal to per(A). Furthermore a zero entry of A has its permanental minor greater than or equal to per(A), provided that same element of the ...
openaire   +2 more sources

Stochastic permanence, stationary distribution and extinction of a single-species nonlinear diffusion system with random perturbation

open access: yes, 2018
We analyze the influence of stochastic perturbations on a single-species logistic model with the population\u27s nonlinear diffusion among.. patches. First, we show that this system has a unique positive solution. Then we obtain sufficient conditions for
Jiang, Daqing, Zu, Li, O’Regan, Donal
core  

Battery Degradation Reduction in Flywheel–Battery Hybrid Energy Storage Using SSA‐Optimized Fuzzy‐PI Control

open access: yesEnergy Science &Engineering, EarlyView.
SSA‐optimized fuzzy‐PI control reduces battery stress in flywheel–battery hybrid energy storage systems by shifting transient power fluctuations to the flywheel. The strategy decreases ampere‐hour throughput by 46.1% and rainflow damage by 71% while maintaining stable DC‐bus regulation.
ZiFen Han   +5 more
wiley   +1 more source

Dynamics of logistic systems driven by Levy noise under regime switching

open access: yesElectronic Journal of Differential Equations, 2014
This article concerns the stochastic logistic models under regime switching with Levy noise. In the model, the color noise and Levy noise are taken into account at the same time. This model is new and more feasible and more accordance with the actual.
Ruihua Wu, Xiaoling Zou, Ke Wang
doaj  

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