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In this paper, we address the problem of online parameter estimation of a Proton Exchange Membrane Fuel Cell (PEMFC) polarization curve, that is the static relation between the voltage and the current of the PEMFC. The task of designing…

信号处理 · 电气工程与系统科学 2023-08-15 Carlo Beltran , Alexey Bobtsov , Romeo Ortega , Diego Langarica-Cordoba , Rafael Cisneros , Luis H. Diaz-Saldierna

An automatic encoder (AE) extreme learning machine (ELM)-AE-ELM model is proposed to predict the NOx emission concentration based on the combination of mutual information algorithm (MI), AE, and ELM. First, the importance of practical…

机器学习 · 计算机科学 2022-07-05 Zhenhao Tang , Shikui Wang , Xiangying Chai , Shengxian Cao , Tinghui Ouyang , Yang Li

We consider Bayesian analysis of a class of multiple changepoint models. While there are a variety of efficient ways to analyse these models if the parameters associated with each segment are independent, there are few general approaches…

统计计算 · 统计学 2009-10-19 Paul Fearnhead , Zhen Liu

We present a Monte Carlo model for degradation of 1-10,000 eV electrons in an atmosphere of methane. The electron impact cross sections for CH4 are compiled and analytical representations of these cross sections are used as input to the…

空间物理 · 物理学 2015-05-27 Anil Bhardwaj , Vrinda Mukundan

This paper deals with the problem of on-line identification of the parameters of a realistic dynamical model of a photovoltaic array connected to a power system through a power converter. It has been shown in the literature that, when…

系统与控制 · 电气工程与系统科学 2022-09-16 Alexey Bobtsov , Fernando Mancilla-David , Stanislav Aranovskiy , Romeo Ortega

This paper proposes an accurate and efficient Universal Adaptive Stabilizer (UAS) based online parameters estimation technique for a 400 V Li-ion battery bank. The battery open circuit voltage, parameters modeling the transient response,…

系统与控制 · 电气工程与系统科学 2022-02-24 Hafiz M. Usman , Shayok Mukhopadhyay , Habibur Rehman

This paper discusses the elastic behavior of a very long crosslinked polyelectrolyte chain (Debye-H\"uckel chain), which is weakly charged. Therefore the response of the crosslinked chain (network) on an external constant force $f$ acting…

软凝聚态物质 · 物理学 2009-10-30 J. Wilder , T. A. Vilgis

We develop a variational Bayesian (VB) approach for estimating large-scale dynamic network models in the network autoregression framework. The VB approach allows for the automatic identification of the dynamic structure of such a model and…

统计方法学 · 统计学 2021-02-19 Wei-Ting Lai , Ray-Bing Chen , Ying Chen , Thorsten Koch

In this paper, we model dependence between operational risks by allowing risk profiles to evolve stochastically in time and to be dependent. This allows for a flexible correlation structure where the dependence between frequencies of…

风险管理 · 定量金融 2009-07-31 Gareth W. Peters , Pavel V. Shevchenko , Mario V. Wüthrich

Methods for estimating the correlation energy of molecules and other electronic systems are discussed based on the assumption that the correlation energy can be partitioned between atomic regions. In one method, the electron density is…

化学物理 · 物理学 2022-05-16 Jerry L. Whitten

We propose a nonparametric approach for probabilistic prediction of the AL index trained with AL and solar wind ($v B_z$) data. Our framework relies on the diffusion forecasting technique, which views AL and $ v B_z $ data as observables of…

数据分析、统计与概率 · 物理学 2017-12-12 Dimitrios Giannakis , Matina Gkioulidou , John Harlim

Probabilistic estimation of cardiac electrophysiological model parameters serves an important step towards model personalization and uncertain quantification. The expensive computation associated with these model simulations, however, makes…

Multi-configurational approaches yield universal wave function parameterizations that can qualitatively well describe electronic structures along reaction pathways. For quantitative results, multi-reference perturbation theory is required…

化学物理 · 物理学 2016-09-08 Christopher J. Stein , Vera von Burg , Markus Reiher

Parametric variability is inevitable in actual energy harvesters. It can significantly affect crucial aspects of the system performance, especially in harvesting systems that present geometric parameters, material properties, or excitation…

系统与控制 · 电气工程与系统科学 2023-06-28 João Pedro Norenberg , Americo Cunha , Samuel da Silva , Paulo Sérgio Varoto

Understanding the dynamics of electric-double-layer (EDL) charging in porous media is essential for advancements in next-generation energy storage devices. Due to the high computational demands of direct numerical simulations and a lack of…

化学物理 · 物理学 2023-09-04 Filipe Henrique , Pawel J. Zuk , Ankur Gupta

Stretching response of polymer chains under external force is crucial in understanding polymer dynamics under equilibrium and non-equilibrium conditions. Here we measure the elastic response of poly(ethylene glycol) using a lock-in based…

软凝聚态物质 · 物理学 2020-10-23 Vikhyaat Ahlawat , Shatruhan Singh Rajput , Shivprasad Patil

A variational approach, based on a discrete representation of the chain, is used to calculate free energy and conformational properties in polyelectrolytes. The true bond and Coulomb potentials are approximated by a trial isotropic harmonic…

chem-ph · 物理学 2016-08-15 B. Jönsson , C. Peterson , B. Söderberg

Bayesian analysis often concerns an evaluation of models with different dimensionality as is necessary in, for example, model selection or mixture models. To facilitate this evaluation, transdimensional Markov chain Monte Carlo (MCMC)…

统计方法学 · 统计学 2018-08-13 Daniel W. Heck , Antony M. Overstall , Quentin F. Gronau , Eric-Jan Wagenmakers

The nonlinear electrokinetic response of ionic solutions is important in nanofluidics. However, quantitatively understanding the mechanisms is still a challenging problem because of a lack of analytic approaches. Here, a general framework…

流体动力学 · 物理学 2023-05-26 Yuki Uematsu

We introduce a new method for online parameter estimation in stochastic interacting particle systems, based on continuous observation of a small number of particles from the system. Our method recursively updates the model parameters using…

统计理论 · 数学 2026-02-25 Louis Sharrock , Nikolas Kantas , Grigorios A. Pavliotis