Results 31 to 40 of about 33,318,051 (318)

Lagrangian Theory of Constrained Systems: Cosmological Application [PDF]

open access: yes, 1994
Previous work in the literature has studied the Hamiltonian structure of an R-squared model of gravity with torsion in a closed Friedmann-Robertson-Walker universe.
Esposito, Giampiero   +4 more
core   +3 more sources

Gaussian Quantum Trajectories for the Variational Simulation of Open Quantum-Optical Systems

open access: yesApplied Sciences, 2018
We construct a class of variational methods for the study of open quantum systems based on Gaussian ansatzes for the quantum trajectory formalism. Gaussianity in the conjugate position and momentum quadratures is distinguished from Gaussianity in density
Wouter Verstraelen, Michiel Wouters
doaj   +1 more source

Optimal Control of a Stefan Problem Fully Coupled with Incompressible Navier-Stokes Equations and Mesh Movement

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2018
The optimal control of moving boundary problems receives growing attention in science and technology. We consider the so called two-phase Stefan problem that models a solid and a liquid phase separated by a moving interface. The Stefan problem is coupled
Baran Bjőrn   +3 more
doaj   +1 more source

Modeling Travel Time Reliability of Road Network Considering Connected Vehicle Guidance Characteristics Indexes

open access: yesJournal of Advanced Transportation, 2017
Travel time reliability (TTR) is one of the important indexes for effectively evaluating the performance of road network, and TTR can effectively be improved using the real-time traffic guidance information.
Jiangfeng Wang   +4 more
doaj   +1 more source

Low-Lying Collective Excitations of Superconductors and Charged Superfluids

open access: yesCondensed Matter, 2023
We investigate theoretically the momentum-dependent frequency and damping of low-lying collective excitations of superconductors and charged superfluids in the BCS–BEC crossover regime.
Serghei Klimin   +2 more
doaj   +1 more source

Economic and Distributed Model Predictive Control: Recent Developments in Optimization-Based Control

open access: yesSICE Journal of Control, Measurement, and System Integration, 2017
The goal of this paper is to give an overview of some recent developments in the field of model predictive control. After a brief introduction to the basic concepts and available stability results, we in particular set our focus on the areas of ...
Matthias A. Müller   +1 more
doaj   +1 more source

Learning and visualizing chronic latent representations using electronic health records

open access: yesBioData Mining, 2022
Background Nowadays, patients with chronic diseases such as diabetes and hypertension have reached alarming numbers worldwide. These diseases increase the risk of developing acute complications and involve a substantial economic burden and demand for ...
David Chushig-Muzo   +3 more
doaj   +1 more source

Systems theory of Smad signaling

open access: yes, 2006
Transforming Growth Factor-beta (TGF-beta) signalling is an important regulator of cellular growth and differentiation. The principal intracellular mediators of TGF-beta signalling are the Smad proteins, which upon TGF-beta stimulation accumulate in the ...
Alves   +63 more
core   +1 more source

The Fusion of Electroencephalography and Facial Expression for Continuous Emotion Recognition

open access: yesIEEE Access, 2019
Recently, the study of emotion recognition has received increasing attentions by the rapid development of noninvasive sensor technologies, machine learning algorithms and compute capability of computers.
Dahua Li   +8 more
doaj   +1 more source

Improving Local Trajectory Optimization by Enhanced Initialization and Global Guidance

open access: yesIEEE Access, 2022
Trajectory optimization is a promising method for planning trajectories of robotic manipulators. With the increasing success of collaborative robots in dynamic environments, the demand for online planning methods grows and offers new opportunities as ...
Maximilian Kramer, Torsten Bertram
doaj   +1 more source

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