Results 131 to 140 of about 130,906 (271)

ON NIL-SYMMETRIC RINGS AND MODULES SKEWED BY RING ENDOMORPHISM

open access: yesScience Journal of University of Zakho
The symmetric property plays an important role in non-commutative ring theory and module theory.  In this paper, we study the symmetric property with one element of the ring  and two nilpotent elements of  skewed by ring endomorphism  on rings ...
Ibrahim Mustafa, Chnar Abdulkareem Ahmed
doaj   +1 more source

Solid‐Phase Extraction of Pb2+ on Multicomponent Oxide Coupled to Portable 3D‐Printed Electrochemical Microcell Using Boron‐Doped Diamond Electrode

open access: yesElectroanalysis, Volume 38, Issue 1, January 2026.
A preconcentration method for Pb2+ coupling solid‐phase extraction (SPE) using SiO2/TiO2/ Sb2O5 with a portable 3D‐printed electrochemical microcell was developed. A multivariate optimization using a fractional factorial design 24‐1 with a central point was carried out.
Diego Prudencio dos Santos   +6 more
wiley   +1 more source

Stability Analysis of Different Quaternion‐Valued Impulsive BAM Neural Networks With Unknown Parameters and Time‐Varying Delays

open access: yesEngineering Reports, Volume 8, Issue 1, January 2026.
This work tackles the unresolved stability problem of heterogeneous quaternion‐valued BAM neural networks plagued by unknown parameters, time‐varying delays, and impulses. By synergizing Lyapunov theory with inequality techniques, we establish rigorous, yet practical, global stability conditions.
Xi Long, Yaqin Li
wiley   +1 more source

Automatic Segmentation of the Outer and Inner Foveal Avascular Zone by Convolutional Filters

open access: yesInternational Journal of Imaging Systems and Technology, Volume 36, Issue 1, January 2026.
ABSTRACT In this paper a new algorithm for segmentation of the foveal avascular zone in optical coherence tomography angiography images of the superficial capillary plexus is presented and evaluated. The algorithm is based on convolutional techniques, and for evaluation it has been compared with a collection of manual segmentations.
Carlos Ruiz‐Tabuenca   +3 more
wiley   +1 more source

Entanglement in Quantum Systems Based on Directed Graphs

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 1, January 2026.
The entanglement properties of quantum states associated with directed graphs are investigated. It is proved that the vertex degree distribution fully determines this entanglement measure, which remains invariant under vertex relabeling, thereby highlighting its topological character.
Lucio De Simone, Roberto Franzosi
wiley   +1 more source

PWM Dead Times in Automotive Traction Inverters using IGBT, SiC MOSFET, or Si/SiC Fusion Switch Power Modules

open access: yesIET Power Electronics, Volume 19, Issue 1, January/December 2026.
This article features a comprehensive methodology for analyzing and optimizing PWM dead time in automotive traction inverters, applicable to a wide range of power devices, including Si IGBT/Diodes, SiC MOSFETs, and Si/SiC Fusion switches. The proposed methodology enables a systematic comparison of dead time characteristics, focusing on part‐to‐part ...
Tomas Reiter   +4 more
wiley   +1 more source

Robust metrics for quantifying and comparing resistance and recovery in experimental studies

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 1, Page 6-14, January 2026.
Abstract Various indices have been developed to experimentally quantify resistance and recovery (two components of engineering resilience) in response to anthropogenic and natural disturbances. This diversity complicates the selection of appropriate metrics for comparing resilience across ecosystems and studies.
Zewei Zhuang   +2 more
wiley   +1 more source

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