Results 51 to 60 of about 278,275 (332)

Alternative stable states, nonlinear behavior, and predictability of microbiome dynamics

open access: yesMicrobiome, 2023
Background Microbiome dynamics are both crucial indicators and potential drivers of human health, agricultural output, and industrial bio-applications. However, predicting microbiome dynamics is notoriously difficult because communities often show abrupt
Hiroaki Fujita   +11 more
doaj   +1 more source

Dynamics of closed ecosystems described by operators

open access: yes, 2014
We adopt the so--called \emph{occupation number representation}, originally used in quantum mechanics and recently adopted in the description of several classical systems, in the analysis of the dynamics of some models of closed ecosystems. In particular,
Bagarello, F., Oliveri, F.
core   +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

Dynamical behaviours and soliton solutions of the conformable fractional Schrödinger–Hirota equation using two different methods

open access: yesJournal of Taibah University for Science, 2022
The nonlinear conformable fractional Schrödinger–Hirota (NCFSH) equation, describing the propagation of optical solitons in a dispersive optical fibre, is considered and its exact solutions are investigated.
Meryem Odabasi Koprulu
doaj   +1 more source

Free-energy transition in a gas of non-interacting nonlinear wave-particles

open access: yes, 2008
We investigate the dynamics of a gas of non-interacting particle-like soliton waves, demonstrating that phase transitions originate from their collective behavior.
A. Bishop   +14 more
core   +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

Synthesis of Mechanisms by Methods of Nonlinear Dynamics

open access: yesActa Polytechnica, 2012
This paper deals with a new method for parametric kinematic synthesis of mechanisms. The traditional synthesis procedure based on collocation, correction and optimization suffers from the local minima of objective functions, usually due to the local unassembled configurations which must be overcome.
Michael Valášek, Zbynek Šika
openaire   +3 more sources

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo   +3 more
wiley   +1 more source

Bifurcation analysis of small amplitude unidirectional waves for nonlinear Schrödinger equations with fractional derivatives

open access: yesScientific Reports
This study explores bifurcation phenomena in the nonlinear time-dependent Schrödinger equation and related models, applying Kudryashov’s methods to find exact solutions.
Safoura Rezaei Aderyani   +3 more
doaj   +1 more source

Equilibrium statistical mechanics for single waves and wave spectra in Langmuir wave-particle interaction [PDF]

open access: yes, 2006
Under the conditions of weak Langmuir turbulence, a self-consistent wave-particle Hamiltonian models the effective nonlinear interaction of a spectrum of M waves with N resonant out-of-equilibrium tail electrons.
Elskens Y.   +4 more
core   +2 more sources

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