Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Liejun Shen"'
Publikováno v:
Sensors, Vol 23, Iss 3, p 1079 (2023)
This study proposes a high-temperature superconducting (HTS) bandpass filter with a continuously tunable bandwidth and center frequency. The proposed filter combines several gallium arsenide varactors and a dual-mode resonator (DMR). The even and odd
Externí odkaz:
https://doaj.org/article/5db15f4e39d5474a8680c21aad330b7b
Autor:
Liejun Shen
Publikováno v:
Journal of Inequalities and Applications, Vol 2018, Iss 1, Pp 1-19 (2018)
Abstract In this paper, we study a class of critical elliptic problems of Kirchhoff type: [a+b(∫R3|∇u|2−μu2|x|2dx)2−α2](−Δu−μu|x|2)=|u|2∗(α)−2u|x|α+λf(x)|u|q−2u|x|β, $$ \biggl[a+b \biggl( \int_{\mathbb{R}^{3}}\vert \nabla u\
Externí odkaz:
https://doaj.org/article/d681e5adbd27439599fe73fa54f6d385
Autor:
Liejun Shen
Publikováno v:
Journal of Inequalities and Applications, Vol 2018, Iss 1, Pp 1-19 (2018)
Abstract The present study is concerned with the following fractional p-Laplacian equation involving a critical Sobolev exponent of Kirchhoff type: [a+b(∫R2N|u(x)−u(y)|p|x−y|N+psdxdy)θ−1](−Δ)psu=|u|ps∗−2u+λf(x)|u|q−2uin RN, $$\bigg
Externí odkaz:
https://doaj.org/article/ad599f75c99b45f4894bd9b142bbd621
Autor:
Liejun Shen
Publikováno v:
Boundary Value Problems, Vol 2018, Iss 1, Pp 1-17 (2018)
Abstract This paper is concerned with the existence of ground state solutions for a class of generalized quasilinear Schrödinger–Poisson systems in R3 $\mathbb {R}^{3}$ which have appeared in plasma physics, as well as in the description of high-p
Externí odkaz:
https://doaj.org/article/7d6fefaf6382460b9bc3fcd8f81c430b
Autor:
Liejun Shen
Publikováno v:
Mathematical Methods in the Applied Sciences. 46:10499-10511
Publikováno v:
International Journal of RF and Microwave Computer-Aided Engineering. 2023:1-9
This paper presents a miniaturized quadband high-temperature superconducting (HTS) bandpass filter based on a multistub-loaded resonator. Owing to the symmetrical structure of the proposed resonator, the odd- and even-mode analysis method can be used
Autor:
Claudianor Oliveira Alves, Liejun Shen
Publikováno v:
Journal of Differential Equations. 344:352-404
Publikováno v:
Journal of Differential Equations. 329:206-254
Publikováno v:
The Journal of Geometric Analysis. 33
Autor:
Liejun Shen
Publikováno v:
Bulletin of the Malaysian Mathematical Sciences Society. 44:3553-3570
We study the existence and asymptotic behavior of least energy sign-changing solutions for a N-Laplacian equation of Kirchhoff type with critical exponential growth in $$\mathbb {R}^N$$ $$\begin{aligned} \left\{ \begin{aligned}&- \bigg (a+b\int _{\ma