Results 31 to 40 of about 6,987,863 (341)

Energy, Phonon, and Dynamic Stability Criteria of Two-Dimensional Materials.

open access: yesACS Applied Materials and Interfaces, 2019
First-principles calculations have become a powerful tool to exclude the Edisonian approach in search of novel two-dimensional (2D) materials. However, no universal first-principles criteria to examine the realizability of hypothetical 2D materials have ...
O. Malyi, K. Sopiha, C. Persson
semanticscholar   +1 more source

Stability in dynamical astronomy [PDF]

open access: yesProceedings of the National Academy of Sciences, 1978
Hill's concept of stability is generalized and its relation to bifurcation theory is shown. A quantitative measure of stability is introduced that allows the comparison of the stability of different astronomical systems. Theoretical stability limits for triple stellar systems, for planetary systems, and for satellite systems are established.
openaire   +3 more sources

Enhanced Dynamic Stability Control for Low-Inertia Hybrid AC/DC Microgrid With Distributed Energy Storage Systems

open access: yesIEEE Access, 2019
Hybrid ac/dc microgrids (MGs) integrated with traditional diesel generators, distributed energy storage systems (ESSs), and high penetration of renewable energy sources (RESs)-based distributed generators (DGs) have become an attractive power supply ...
Xialin Li   +5 more
semanticscholar   +1 more source

Dynamic Stabilization of the Trunk [PDF]

open access: yesJournal of Orthopaedic & Sports Physical Therapy, 1985
The lumbopelvic region, because it is the hub of our antigravity weightbearing, is the most vulnerable area for spraining and straining tissues. It is also, however, the most difficult area to treat because of our inability to completely control the healing of these injured tissues.
openaire   +3 more sources

A Novel Control to Improve Dynamic Stability of Power Systems Including DFIG and SSSC [PDF]

open access: yesInternational Journal of Industrial Electronics, Control and Optimization, 2022
This study is concerned with the design of multi-input Dynamic Surface Control (DSC) to dynamic stability improvement of power systems which include both Doubly Feed Induction Generator (DFIG) and Static Synchronous Series Compensator (SSSC).
Saeed Abazari, Zabihollah Faramarzi
doaj   +1 more source

Stability of Boolean and Continuous Dynamics [PDF]

open access: yesPhysical Review Letters, 2011
Regulatory dynamics in biology is often described by continuous rate equations for continuously varying chemical concentrations. Binary discretization of state space and time leads to Boolean dynamics. In the latter, the dynamics has been called unstable if flip perturbations lead to damage spreading.
Konstantin Klemm, Fakhteh Ghanbarnejad
openaire   +4 more sources

Stability, Reliability, and Robustness of GaN Power Devices: A Review

open access: yesIEEE transactions on power electronics, 2023
Gallium nitride (GaN) devices are revolutionarily advancing the efficiency, frequency, and form factor of power electronics. However, the material composition, architecture, and physics of many GaN devices are significantly different from silicon and ...
J. P. Kozak   +8 more
semanticscholar   +1 more source

Dynamic stabilization? [PDF]

open access: yesNature Materials, 2014
Enhancing the temperature at which superconductivity is observed is a long-standing objective for materials scientists. Recent tantalizing experiments suggest a possible route for achieving this.
openaire   +5 more sources

Local dynamic stability during gait for predicting falls in elderly people: A one-year prospective study

open access: yesPLoS ONE, 2018
Computing the local dynamic stability using accelerometer data from inertial sensors has recently been proposed as a gait measure which may be able to identify elderly people at fall risk. However, the assumptions supporting this potential were concluded
L. Bizovska   +4 more
semanticscholar   +1 more source

Dynamics and stability of chiral fluid [PDF]

open access: yesPhysics of Atomic Nuclei, 2014
Starting from the linear sigma model with constituent quarks we derive the chiral fluid dynamics where hydrodynamic equations for the quark fluid are coupled to the equation of motion for the order-parameter field. In a static system at thermal equilibrium this model leads to a chiral phase transition which, depending on the choice of the quark-meson ...
Igor Mishustin   +7 more
openaire   +3 more sources

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