Results 111 to 120 of about 133,110 (277)

A generalization of Osgood's test and a comparison criterion for integral equations with noise

open access: yesElectronic Journal of Differential Equations, 2011
In this article, we prove a generalization of Osgood's test for the explosion of the solutions of initial-value problems. We also establish a comparison criterion for the solution of integral equations with noise, and provide estimations of the time ...
Marcos J. Ceballos-Lira   +2 more
doaj  

Extreme value prediction of the roll motion under random seas

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveIn this work, two stability failure models, i.e., the dead ship condition and parametric roll are selected in order to study and evaluate ship stability as well as safety at seas.
Jie ZHU, Zailiang LIU, Yan LIN, Wei CHAI
doaj   +1 more source

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir   +2 more
wiley   +1 more source

An application of generalized absolute value equation

open access: yesJournal of Nonlinear Mathematical Physics
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Li, Cui-Xia, Wu, Shi-Liang
openaire   +2 more sources

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

open access: yesAdvanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt   +8 more
wiley   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

Probability of Unique Integer Solution to a System of Linear Equations

open access: yes, 2009
We consider a system of m linear equations in n variables Ax = d and give necessary and sufficient conditions for the existence of a unique solution to the system that is integer: x ? {?1,1}n.
Mangasarian, Olvi, Recht, Benjamin
core  

An algorithm for solving the absolute value equation

open access: yesThe Electronic Journal of Linear Algebra, 2009
Presented is an algorithm which for each A,B ∈ Rn×n and b ∈ Rn in a finite number of steps either finds a solution of the equation Ax+B|x| = b, or states existence of a singular matrix S satisfying |S − A |≤| B| (and in most cases also constructs such an S).
openaire   +2 more sources

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