Requirements for big data adoption for railway asset management

P McMahon, T Zhang, R Dwight - Ieee Access, 2020 - ieeexplore.ieee.org
Nowadays, huge amounts of data have been captured along with the day-to-day operation
of assets including railway systems. Hence, we have come to the era of big data. The …

Dynamical criteria for the evolution of the stochastic dimensionality in flows with uncertainty

TP Sapsis, PFJ Lermusiaux - Physica D: Nonlinear Phenomena, 2012 - Elsevier
We estimate and study the evolution of the dominant dimensionality of dynamical systems
with uncertainty governed by stochastic partial differential equations, within the context of …

Coupled ocean–acoustic prediction of transmission loss in a continental shelfbreak region: Predictive skill, uncertainty quantification, and dynamical sensitivities

PFJ Lermusiaux, J Xu, CF Chen, S Jan… - IEEE Journal of …, 2010 - ieeexplore.ieee.org
In this paper, we quantify the dynamical causes and uncertainties of striking differences in
acoustic transmission data collected on the shelf and shelfbreak in the northeastern Taiwan …

Dynamically orthogonal differential equations for stochastic and deterministic reduced-order modeling of ocean acoustic wave propagation

A Charous, PFJ Lermusiaux - OCEANS 2021: San Diego …, 2021 - ieeexplore.ieee.org
Accurate and computationally efficient acoustic models are needed for varied marine
applications. In this paper, we focus our attention on forward models, which are essential to …

Dynamically orthogonal narrow-angle parabolic equations for stochastic underwater sound propagation. Part I: Theory and schemes

WH Ali, PFJ Lermusiaux - The Journal of the Acoustical Society of …, 2024 - pubs.aip.org
Robust informative acoustic predictions require precise knowledge of ocean physics,
bathymetry, seabed, and acoustic parameters. However, in realistic applications, this …

Incremental Low-Rank Dynamic Mode Decomposition Model for Efficient Forecast Dissemination and Onboard Forecasting

T Ryu, WH Ali, PJ Haley, C Mirabito… - OCEANS 2022 …, 2022 - ieeexplore.ieee.org
Onboard forecasting is challenging but essential for unmanned autonomous ocean
platforms. Due to the numerous operational constraints of these platforms, efficient adaptive …

Entropy evolution and uncertainty estimation with dynamical systems

XS Liang - Entropy, 2014 - mdpi.com
This paper presents a comprehensive introduction and systematic derivation of the
evolutionary equations for absolute entropy H and relative entropy D, some of which exist …

Toward Dynamic Data-Driven Systems for Rapid Adaptive Interdisciplinary Ocean Forecasting

NM Patrikalakis, PFJ Lermusiaux… - Handbook of Dynamic …, 2023 - Springer
The state of the ocean evolves and its dynamics involves transitions occurring at multiple
scales. For efficient and rapid interdisciplinary forecasting, ocean observing and prediction …

Gvt algorithms and discrete event dynamics on 129k+ processor cores

KS Perumalla, AJ Park… - 2011 18th International …, 2011 - ieeexplore.ieee.org
Parallel discrete event simulation (PDES) represents a class of codes that are challenging to
scale to large number of processors due to tight global timestamp-ordering and fine-grained …

Research on situation awareness based on ontology for UUV

Y Hongfei, W Hongjian, L Hongli… - 2016 IEEE International …, 2016 - ieeexplore.ieee.org
To solve the problem of using information to control behavior for unmanned underwater
vehicle (UUV), this paper presents a situation awareness method on the basis of ontology …