Results 151 to 160 of about 863,168 (361)
Advanced Science, EarlyView.A switchable bidirectional acoustic metastructure is proposed, enabling broadband and frequency‐selective absorption via interleaved resonator coupling and exceptional point modulation. It outperforms traditional unidirectional designs, offering compact, efficient sound control from both directions and establishing a generalized framework for extending
Zichao Guo +7 more
wiley +1 more source
Eigenvalues of the negative Laplacian for arbitrary multiply connected domains
International Journal of Mathematics and Mathematical Sciences, 1996 The purpose of this paper is to derive some interesting asymptotic formulae for spectra of arbitrary multiply connected bounded domains in two or three dimensions, linked with variation of positive distinct functions entering the boundary conditions ...
E. M. E. Zayed
doaj +1 more source
On the Eigenvalues of a Matrix with Prescribed Singular Values [PDF]
, 1954 Alfred Horn
openalex +1 more source
Advanced Electronic Materials, EarlyView.The single‐molecule with a large transistor‐SiMoT is proposed for the detection of the subgenomic RNA of SARS‐CoV‐2, achieving a diagnostic sensitivity of 98.0% and a specificity of 87.8%. The SiMoT technology, currently at TRL‐5, is suitable for point‐of‐care settings and delivers the result to the end user in 30 min.
Eleonora Macchia +12 more
wiley +1 more source
Remarks on the second Neumann eigenvalue
Electronic Journal of Differential Equations, 2022 Jose C. Sabina de Lis
doaj
On an eigenvalue problem associated with the (p, q) − Laplacian
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria MatematicaLet Ω ⊂ ℝN, N ≥ 2, be a bounded domain with smooth boundary ∂Ω. Consider the following generalized Robin-Steklov eigenvalue problem associated with the operator 𝒜u = − Δpu − Δqu {𝒜u+ρ1(x)|u|p-2u+ρ2(x)|u|q-2u=λα(x)|u|r-2u, x∈Ω,∂u∂vA+γ1(x)|u|p-2u+γ2(x)|u|
Barbu Luminiţa +2 more
doaj +1 more source
Some remarks on a class of eigenvalue problems with special boundary conditions [PDF]
, 1953 Glenn Morgan
openalex +1 more source
Advanced Energy Materials, EarlyView.A unified analytical model is developed to consistently interpret the steady‐state and small‐perturbation response of photoanodes, both in the time and frequency domain. By accounting for non‐ideal electron extraction and slow hole kinetics, the model explains key experimental trends in the case of a hematite photoanode and allows extraction of related
Paola Ragonese +4 more
wiley +1 more source
Product differentiation in the fruit industry: Lessons from trademarked apples
Agribusiness, EarlyView.Abstract We derive price premiums for patented or trademarked apple varieties, also known as “club apples,” compared to open‐variety apples. We use an expansive retail scanner dataset, along with unique data on apple taste characteristics, to estimate monthly club apple premiums for 2008–2018.
Modhurima Dey Amin +3 more
wiley +1 more source