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A Novel Digital Twin Architecture with Similarity-Based Hybrid Modeling for Supporting Dependable Disaster Management Systems [PDF]

open access: yesSensors, 2022
Disaster management systems require accurate disaster monitoring and prediction services to reduce damages caused by natural disasters. Digital twins of natural environments can provide the services for the systems with physics-based and data-driven ...
Seong-Jin Yun, Jin-Woo Kwon, Won-Tae Kim
doaj   +2 more sources

Hybrid modeling of plasmas [PDF]

open access: yes, 2010
Here we present the mathematical and numerical details of a general hybrid model for plasmas. All grid quantities are stored at cell centers on the grid.
Holmstrom, Mats
core   +2 more sources

Seed Train Optimization in Microcarrier-Based Cell Culture Post In Situ Cell Detachment through Scale-Down Hybrid Modeling [PDF]

open access: yesBioengineering
Microcarrier-based cell culture is a commonly used method to facilitate the growth of anchorage-dependent cells like MA 104 for antigen manufacturing.
Atefeh Ebrahimian   +5 more
doaj   +2 more sources

Novel and flexible parameter estimation methods for data-consistent inversion in mechanistic modelling

open access: yesRoyal Society Open Science, 2023
Predictions for physical systems often rely upon knowledge acquired from ensembles of entities, e.g. ensembles of cells in biological sciences. For qualitative and quantitative analysis, these ensembles are simulated with parametric families of ...
Timothy Rumbell   +3 more
doaj   +1 more source

On the Convergence Rate of Quasi-Newton Methods on Strongly Convex Functions with Lipschitz Gradient

open access: yesMathematics, 2023
The main results of the study of the convergence rate of quasi-Newton minimization methods were obtained under the assumption that the method operates in the region of the extremum of the function, where there is a stable quadratic representation of the ...
Vladimir Krutikov   +3 more
doaj   +1 more source

Subgroup Discovery in Machine Learning Problems with Formal Concepts Analysis and Test Theory Algorithms

open access: yesAlgorithms, 2023
A number of real-world problems of automatic grouping of objects or clustering require a reasonable solution and the possibility of interpreting the result. More specific is the problem of identifying homogeneous subgroups of objects.
Igor Masich   +5 more
doaj   +1 more source

Properties of the Quadratic Transformation of Dual Variables

open access: yesAlgorithms, 2023
We investigate a solution of a convex programming problem with a strongly convex objective function based on the dual approach. A dual optimization problem has constraints on the positivity of variables.
Vladimir Krutikov   +5 more
doaj   +1 more source

Recurrent Neural Network-Based Hybrid Modeling Method for Digital Twin of Boiler System in Coal-Fired Power Plant

open access: yesApplied Sciences, 2023
Due to the simplified assumptions or unascertained equipment parameters, traditional mechanism models of boiler system in coal-fired power plant usually have predictive errors that cannot be ignored. In order to further improve the predictive accuracy of
Yanbo Zhao, Yuanli Cai, Haonan Jiang
doaj   +1 more source

A Vision of Collaborative Verification-Driven Engineering of Hybrid Systems [PDF]

open access: yes, 2013
. Hybrid systems with both discrete and continuous dynamics are an important model for real-world physical systems. The key challenge is how to ensure their correct functioning w.r.t. safety requirements.
Mitsch, Stefan   +2 more
core   +5 more sources

Improved forecasting of extreme hurricane events by integrating spatio-temporal CNN-RF learning of tropical cyclone characteristics

open access: yesFrontiers in Earth Science, 2023
Assessing hurricane predictions in a changing climate is one of the most challenging weather forecast problems today. Furthermore, effectively integrating information-rich features that are specific to the growth of hurricanes proves to be a difficult ...
Javier Martinez-Amaya   +3 more
doaj   +1 more source

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