Results 51 to 60 of about 805,461 (159)

Influence of Anti-yaw Damper Series Stiffnesson Running Stability of High-speed EMUs

open access: yes机车电传动, 2015
The Maxwell model, which was the simplified model of anti-yaw damper, was introduced. High-speed EMUs model wasestablished by using SIMPACK. Based on nonlinear and linear stability analysis, the influence of anti-yaw damper series stiffness withdifferent
HE Yuan, WANG Yong
doaj  

Impact of Wheel Wear on Dynamics Performance of CR200J EMU Trailer and Control Cars

open access: yesChengshi guidao jiaotong yanjiu
Objective In response to stability alarm faults occurring in CR200J EMU trailer and control cars in certain sections, it is necessary to analyze the factors affecting the dynamics performance to analyze the causes and address the issues.
XU Li, YANG Chen, GU Zhonghua
doaj   +1 more source

On the maximum likelihood degree of Gaussian graphical models

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 10, October 2026.
Abstract In this paper we revisit the likelihood geometry of Gaussian graphical models. We give a detailed proof that the ML‐degree behaves monotonically on induced subgraphs. Furthermore, we complete a missing argument that the ML‐degree of the nth$n{\rm th}$ cycle is larger than 1 for any n⩾4$n\geqslant 4$, therefore completing the characterization ...
Carlos Améndola   +3 more
wiley   +1 more source

Design of Large‐Aperture Hybrid Refractive Metalens System

open access: yesNanophotonics, Volume 15, Issue 18, 25 September 2026.
An all‐germanium hybrid refractive–metalens system was constructed by integrating a planar Ge metalens with a single aspheric Ge lens, enabling compact wavefront correction in the LWIR band. The all‐Ge hybrid architecture simplifies conventional multi‐element infrared optics into a lightweight integrated imaging system while maintaining effective ...
Yinpeng Ma   +9 more
wiley   +1 more source

Surrogate Scattering Matrix‐Guided Inverse Design of Nanophotonic Neural Networks

open access: yesNanophotonics, Volume 15, Issue 18, 25 September 2026.
Surrogate‐guided inverse design separates task learning from electromagnetic realization by transferring a trained passive operator to a fabrication‐aware nanophotonic structure. The electromagnetic cost of each update depends on port count rather than the dataset size.
Azka Maula Iskandar Muda, Uğur Teğin
wiley   +1 more source

Determination of Critical Speed of Railway Vehicles Using Measuring Technologies of Bench Tests

open access: yesEng
The paper is focused on the problem of increasing the reliability of determining the critical speed of railway vehicles during measurements in bench tests, due to the difference in the geometry of the contact interaction in the “wheel-roller” and “wheel ...
Vasyl Ravlyuk   +3 more
doaj   +1 more source

Signed Projective Cubes, a Homomorphism Point of View

open access: yesJournal of Graph Theory, Volume 113, Issue 1, Page 38-56, September 2026.
ABSTRACT The (signed) projective cubes, as a special class of graphs closely related to the hypercubes, are on the crossroad of geometry, algebra, discrete mathematics and linear algebra. Defined as Cayley graphs on binary groups, they represent basic linear dependencies.
Meirun Chen   +2 more
wiley   +1 more source

Uranus's Highly Nonaxisymmetric Magnetopause and Its Impact on Magnetic Reconnection

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Mass and energy fluxes from the solar wind can access a planet's magnetosphere through dayside magnetic reconnection. The plasma and magnetic field conditions on either side of the magnetopause determine whether reconnection is suppressed. However, magnetosheath conditions are sensitive to the shape of the magnetopause, and deviations from ...
Jack H. Crump   +4 more
wiley   +1 more source

Paid Leave Oregon - equivalent plans. Spanish

open access: yes, 2022
Video overview about equivalent plans to Paid Leave Oregon.This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.

core  

Global Characterization of the Compressional Components of Magnetic Wave Activity in Mercury's Foreshock Region

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract Mercury's weak intrinsic magnetic field forms a small magnetosphere and thus a bow shock that decelerates the supermagnetosonic solar wind and reflects particles upstream, forming a foreshock in the quasi‐parallel region. This region is populated by backstreaming ions and electrons and associated wave activity.
Kristin Pump   +6 more
wiley   +1 more source

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