Results 81 to 90 of about 82,878 (275)

Geometry of the Abel Equation of the first kind

open access: yes, 2014
We study the first kind Abel differential equation $$\dfrac{dy}{dx}=c_0(x)+3c_1(x)y+3c_2y^2+c_3(x)y^3,$$ where the functions $c_i$ are real analytic. The first step of our analysis is through the Cartan equivalence method, then we use techniques from ...
Wone, Oumar
core  

The Statistical Mechanics of the Self-Gravitating Gas: Equation of State and Fractal Dimension

open access: yes, 2000
We provide a complete picture of the self-gravitating non-relativistic gas at thermal equilibrium using Monte Carlo simulations (MC), analytic mean field methods (MF) and low density expansions.
H.J de Vega, Lipatov, N Sánchez
core   +1 more source

Projected Evolution of Climatic Aridity in Spain: Robust Signals and Model Uncertainties

open access: yesInternational Journal of Climatology, EarlyView.
This study examines the projected evolution of climatic aridity in Spain throughout the 21st century, using the UNEP Aridity Index and CMIP6 simulations under different emission scenarios and global warming levels. Despite model biases, results show a general increase in aridity across the country, particularly in southern regions and the Canary ...
Víctor Trullenque‐Blanco   +5 more
wiley   +1 more source

Rational solutions and limit cycles of polynomial and trigonometric Abel equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
e study the Abel differential equation $x'=A(t)x^3+B(t)x^2+C(t)x$. Specifically, we find bounds on the number of its rational solutions when $A(t), B(t)$ and $C(t)$ are polynomials with real or complex coefficients; and on the number of rational limit ...
Luis Ángel Calderón
doaj   +1 more source

Analytical-approximate solution of Abel integral equations [PDF]

open access: yes, 2011
It is known that Abel integral equation has a solution in a closed form, with a removable singularity.The presence of Volterra integrals with weak singularity is not always integrable for continuous differentiable class of functions.In this work we ...
Eshkuratov, Zainidin K.   +2 more
core  

Doping‐Free Polymer Nanoparticle Engineering of n‐Type Organic Mixed Ion–Electron Conductors for Enhancement‐Mode Organic Electrochemical Transistors

open access: yesMacromolecular Rapid Communications, EarlyView.
We report a nanoparticle formulation strategy for the ladder polymer BBL that enables undoped enhancement‐mode OECTs. Controlled reprecipitation with DBSA yields stable nanoparticles, and spray‐coating forms dense, well‐connected films. The resulting devices exhibit strongly enhanced electrochemical response and transconductance, establishing a ...
Shunsuke Yamamoto   +2 more
wiley   +1 more source

Properties of the resolvent of a linear Abel integral equation: implications for a complementary fractional equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
New and known properties of the resolvent of the kernel of linear Abel integral equations of the form \begin{equation} \tag{A$_\lambda$} x(t) = f(t) - \lambda \int_0^t (t - s)^{q-1}x(s)\,ds, \end{equation} where $\lambda > 0$ and $q \in (0,1)$, are ...
Leigh Becker
doaj   +1 more source

Considerations of race and ethnicity within rehabilitation studies for post COVID‐19 condition: A scoping review

open access: yesPM&R, EarlyView.
Abstract Post COVID‐19 condition (PCC) or long COVID disproportionately affects racial and ethnic minority communities. There are a growing number of rehabilitation studies for PCC, however, it has yet to be determined whether existing studies take race and ethnicity into account in their study designs and whether existing rehabilitative approaches are
Nadine Akbar   +5 more
wiley   +1 more source

Approximate solution of Abel integral equation

open access: yesComputers & Mathematics with Applications, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huang, Li, Huang, Yong, Li, Xian-Fang
openaire   +2 more sources

Open letter: The need for a site‐based biodiversity standard measuring and certifying impacts from nature‐based projects

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Despite growing investment in restoration, weak accountability and poor biodiversity monitoring mean many projects fail to achieve ecological recovery. The Global Biodiversity Standard (TGBS) offers a practical way to ensure that restoration finance delivers measurable gains for nature.
David Bartholomew   +254 more
wiley   +1 more source

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