Results 51 to 60 of about 6,585,637 (137)

Eigenvalue Based Detection by Combining Eigenvector‐Correlated Signal in Low SNR Environment

open access: yesIET Signal Processing, Volume 2025, Issue 1, 2025.
Eigenvalue detection is extensively utilized in numerous applications, including spectrum sensing in cognitive radio. However, the characteristics of the Tracy–Widom (TW2) distribution and its lack of accurate close‐form expression limit the detection performance based on the extreme eigenvalue.
Wei Ge   +5 more
wiley   +1 more source

Nonlinear Dynamical Analysis of a Diffusion-Driven Bacterial Density Model: Integrability and Bifurcation Analysis

open access: yesMathematics
This work investigates the dynamical properties of the Kolmogorov–Petrovskii–Piskunov (KPP) equation. We begin by establishing its non-integrability through the Painlevé test.
Adel Elmandouh
doaj   +1 more source

Optical Soliton Structure Solutions, Sensitivity, and Modulation Stability Analysis in the Chiral Nonlinear Schrödinger Equation With Bohm Potential

open access: yesAdvances in Mathematical Physics, Volume 2025, Issue 1, 2025.
This study examines the optical soliton structure solutions, sensitivity, and modulation stability analysis of the chiral nonlinear Schrödinger equation (NLSE) with Bohm potential, a basic model in nonlinear optics and quantum mechanics. The equation represents wave group dynamics in numerous physical systems, involving quantum Hall and nonlinear ...
Ishrat Bibi   +4 more
wiley   +1 more source

PCS-Q-G. Parental Caregiving Style Questionnaire – German Version

open access: yes
Der PCS-Q-G dient der retrospektiven Erfassung des elterlichen Fürsorgeverhaltens. In Analogie zum 3-Kategorien-Modell von Bindung unterscheidet das Instrument zwischen den drei Stilen „warm/aufmerksam“, „ambivalent/inkonsistent“ und „kalt/abweisend ...
Rohmann, E., Neumann, E.
core   +1 more source

Painlevé Analysis and Similarity Reductions for the Magma Equation

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2006
In this paper, we examine a generalized magma equation for rational values of two parameters, m and n. Firstly, the similarity reductions are found using the Lie group method of infinitesimal transformations.
Shirley E. Harris, Peter A. Clarkson
doaj  

Bäcklund transformation, similarity reduction and new solutions for the (2+1)-dimensional graphene sheets thermophoretic motion equation with variable heat transmission

open access: yesAlexandria Engineering Journal
Graphene has appeared as one of the most promising nanomaterials with unique thermal, electronic and mechanical properties which make it suitable for many applications in materials science, energy storage, electronics, water filtration and medicine.
Mahmoud Gaballah, Rehab M. El-Shiekh
doaj   +1 more source

The Painlevé Test and Reducibility to the Canonical Forms for Higher-Dimensional Soliton Equations with Variable-Coefficients

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2006
The general KdV equation (gKdV) derived by T. Chou is one of the famous (1 + 1) dimensional soliton equations with variable coefficients. It is well-known that the gKdV equation is integrable.
Tadashi Kobayashi, Kouichi Toda
doaj  

Painlevé integrability and multiple soliton solutions for the extensions of the (modified) Korteweg-de Vries-type equations with second-order time-derivative

open access: yesAlexandria Engineering Journal
This work introduces two (3+1)-dimensional expansions of the Korteweg–de Vries (KdV) and modified KdV (mKdV) equations. These extensions incorporate a second-order time-derivative term, similar to the Boussinesq equation. The Painlevé test is utilized to
Abdul-Majid Wazwaz   +3 more
doaj   +1 more source

STARC-5. Fragebogen für Empowerment und Resilienz

open access: yes
STARC-5 eignet sich mit 5 analytisch entwickelten Dimensionen (Self-esteem/ Selbstvertrauen, Trust/Optimismus, Affective resilience/Affektive Resilienz, Reliable problem solving/Problemlösekompetenz, Cognitive strength/Kognitive Stärke) und insgesamt 39 ...
Himmer-Gurdan, S. B.
core   +1 more source

Nonlinear evolution equations and Painlevé test [PDF]

open access: yes, 1988
This book is an edited version of lectures given by the authors at a seminar at the Rand Afrikaans University. It gives a survey on the Painlevé test, Painlevé property and integrability.
Euler, N, Steeb, Willi-Hans
core  

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