Results 31 to 40 of about 1,691,336 (170)

New nonlinear Picone identities with variable exponents and applications

, 2023
summary:This paper introduces two novel nonlinear anisotropic Picone identities with variable exponents that expand upon the traditional identity used for the ordinary Laplace equation.
El Hadfi, Youssef, Khelifi, Hichem
core   +1 more source

The Impacts of Tropospheric Gravity Wave‐Generated MSTIDs on Skywaves at Mid‐latitude North American Sector Observed and Modeled Using SuperDARN HF Radars

Radio Science, Volume 61, Issue 9, September 2026.
Abstract Trans‐ionospheric high frequency (HF: 3–30 MHz) response to atmospheric gravity waves (GWs) is studied in the middle‐latitude ionosphere in relation to thunderstorm activity. SuperDARN HF radar observations are compared against the model simulations to quantify the impact of GW‐generated medium‐scale traveling ionospheric disturbances (MSTID ...
S. Chakraborty, P. A. Inchin, S. Debchoudhury, B. Bergsson, M. Zettergren, J. M. Ruohoniemi   +5 more
wiley   +1 more source

Picone's identity for the p-biharmonic operator with applications

Electronic Journal of Differential Equations, 2011
In this article, a Picone-type identity for the weighted p-biharmonic operator is established and comparison results for a class of half-linear partial differential equations of fourth order based on this identity are derived.
Jaroslav Jaros
doaj  

Picone's identity and the moving plane procedure

Electronic Journal of Differential Equations, 1995
Summary: Positive solutions of a class of nonlinear elliptic partial differential equations are shown to be symmetric by means of the moving plane argument coupled with spectral theory results and Picone's identity. The method adapts easily to situations where the moving plane procedure gives rise to variational problems with positive eigenfunctions.
W. Allegretto, D. Siegel
openaire   +2 more sources

Quasi 6‐Day Wave Variability in the Thermosphere and Ionosphere: Observations and Modeling

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Satellite observations of the upper mesosphere and lower thermosphere from TIMED‐SABER and ICON‐MIGHTI reveal a clear Quasi 6‐Day Wave (Q6DW) event in the winds and temperatures in this region. This Q6DW event persists across multiple data sets throughout the middle‐to‐upper thermosphere and the F‐region ionosphere, including GOLD disk ...
Oluwafisayo P. Owolabi, Scott L. England, Yen‐Jung Wu   +2 more
wiley   +1 more source

Generalized Picone and Riccati inequalities for half-linear differential operators with arbitrary elliptic matrices

Electronic Journal of Differential Equations, 2010
In the article, we extend the well-known Picone identity for half-linear partial differential equations to equations with anisotropic p-Laplacian.
Simona Fisnarova, Robert Marik
doaj  

Robust Short‐Term Forecasting of Thermospheric Density and Orbit Prediction Using an Interpretable iTransformer Model

Space Weather, Volume 24, Issue 9, September 2026.
Abstract Accurate short‐term forecasting of thermospheric mass density is crucial for satellite operations. However, achieving high‐precision predictions remains a significant challenge. In this study, we develop an iTransformer framework that forecasts thermospheric density over the next 24 hr using observations from the preceding 24 hr. Using density
Mingyi Zhang, Xiangguang Meng, Xin Wang, Yueqiang Sun, Qifei Du, Weihua Bai, Peng Hu, Zhiqi Zhou   +7 more
wiley   +1 more source

Drug‐Induced Vitiligo: FDA Adverse Events Reporting System (FAERS) and Canada Vigilance Adverse Reaction (CAVR) Database Analysis and Literature Review

Journal of Cosmetic Dermatology, Volume 25, Issue 9, September 2026.
ABSTRACT Background Vitiligo is a common chronic acquired pigmentation disease, that usually occurs with an asymptomatic whitish patch or macule. Although previous studies have reported several cases of drug‐induced vitiligo, there are few comprehensive studies determining the drugs that induce vitiligo.
Yuhao Li, Yi Ou, Luyue Chang, Ruiyao Wang, Xinyi Shao, Jingbo Zhang, Jin Chen   +6 more
wiley   +1 more source

Oscillation for quasilinear elliptic equations with p(x)-Laplacians in general domains

Electronic Journal of Differential Equations, 2013
Oscillation of quasilinear elliptic equations with p(x)-Laplacians in general domains are derived by the variational approach as applications of Picone identity. Three examples are given, and generalizations to quasilinear elliptic equations with $p(x)
Norio Yoshida
doaj  

Seismo‐ and Tsunami‐Traveling Ionospheric Disturbances of the 29 July 2025 M8.8 Kamchatka Earthquake Observed by CW‐HF Doppler Sounding Systems and Ionosondes in Taiwan and Japan

Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Doppler frequency shifts (DFSs) recorded by continuous wave‐high frequency Doppler sounding systems and ionograms observed by five ionosondes in Taiwan and Japan are used to study three‐dimensionally seismo‐ and tsunami‐traveling ionospheric disturbances (STIDs and TTIDs) triggered by the 29 July 2025 Mw8.8 Kamchatka earthquake.
Yao‐Chun Chen, Jann‐Yenq Liu, Tien‐Chi Liu, Katsumi Hattori, Jaroslav Chum, Chieh‐Hung Chen, Wen‐Yen Chang, Bor‐Shouh Huang, Rui Song, Horng‐Yuan Yen   +9 more
wiley   +1 more source