Results 221 to 230 of about 1,508,171 (301)

The Cross‐Kernel Margin: A Robustness Measure for Quantum Kernel Methods

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 9, September 2026.
The cross‐kernel margin is introduced as a robustness measure for Quantum Kernel‐Assisted Support Vector Machines. This metric evaluates a classifier learned from a perturbed kernel within the ideal, unperturbed kernel geometry. Derived stability bounds quantify the corresponding inverse squared‐margin deviation and are numerically tested under local ...
S. Govender, I. Sinayskiy
wiley   +1 more source

Advancing our understanding of soil particulate organic matter dynamics

open access: yesSoil Science Society of America Journal, Volume 90, Issue 5, September/October 2026.
Abstract This study aimed to characterize the diversity and complexity of soil particulate organic matter (POM) across California agricultural fields. By identifying the chemical signature of this small but significant organic matter fraction, researchers can build a deeper understanding of how it contributes to nutrient and carbon cycling in ...
Suzette N. T. Santiago   +3 more
wiley   +1 more source

A review of numerical methods for flow and transport modeling in the vadose zone

open access: yesVadose Zone Journal, Volume 25, Issue 5, September/October 2026.
Abstract Accurate modeling of subsurface flow and transport processes in the vadose zone, governed by the Richards equation and advection‐dispersion equation, respectively, poses major numerical challenges due to the strong nonlinearity of the governing partial differential equations, spatial heterogeneity and anisotropy of the media parameters, and ...
Shruti Jain, Saumava Dey, B. R. Chahar
wiley   +1 more source

Medium‐Scale Traveling Ionospheric Disturbances Induced by Secondary Gravity Waves Associated With Record‐Breaking Heavy Rainfall in August 2021 Over Kyushu, Japan

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract This study reconstructs a multistep gravity wave (GW) pathway, from the generation of primary GWs by deep convection in the troposphere to the generation of secondary GWs that drive semi‐concentric medium‐scale traveling ionospheric disturbances (MSTIDs) in the ionosphere, during the record‐breaking heavy rainfall over Kyushu, Japan, in August
Masaru Kogure   +7 more
wiley   +1 more source

STA-Mediated Interferometry with a Single Trapped Particle. [PDF]

open access: yesEntropy (Basel)
Rodriguez-Prieto A   +2 more
europepmc   +1 more source

Depositional History of the Namibian Mud Belt Reveals Late Holocene Weakening of the Benguela Coastal Current

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract We investigate late Holocene changes in the northern Benguela Upwelling System using a multi‐proxy approach on shallow shelf deposits from the Namibian mud belt. Three sediment cores characterized by organic carbon‐rich, anoxic, and partly gas‐bearing sediments were retrieved along a sampling transect at 23°S in August 2019.
Michael Kossack   +5 more
wiley   +1 more source

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