Results 61 to 70 of about 1,270 (170)
1 W Single‐Mode Large‐Area Edge‐Emitting Laser via Non‐Hermitian Spatial Mode Filtering
Laser &Photonics Reviews, EarlyView.We demonstrate a non‐Hermitian spatial mode filtering approach for achieving high‐power single‐mode operation in large‐area edge‐emitting laser diodes. By symmetrically coupling passive filter arrays to the main lasing waveguide, higher‐order transverse modes are effectively suppressed while preserving the fundamental mode.
Ece Karabey +4 more
wiley +1 more source
On the Geometry of the Kähler Golden Manifold
AxiomsThe main objective of this paper is to investigate the properties related to the sectional curvatures of a Kähler golden manifold, an almost Hermitian golden manifold whose almost complex golden structure is parallel with respect to the Levi–Civita ...
Cristina Elena Hreţcanu +1 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.A picopatch in a plasmonic nanocavity confines the electromagnetic energy to tiny effective volumes, close to 1nm3, leading to extreme electric field enhancements. Furthermore, a clear signature of strong coupling between the picopatch modes and other modes of the structure is obtained, which strongly modifies the far‐field response. ABSTRACT Plasmonic
Jinna He +6 more
wiley +1 more source
Toric Hermitian surfaces and almost Kähler structures [PDF]
Annales Polonici Mathematici, 2007 The aim of this paper is to investigate the class of compact Hermitian surfaces (M, g, J) admitting an action of the 2-torus T-2 by holomorphic isometries. We prove that if b(1)(M) is even and (M, g, J) is locally conformally Kahler and chi(M) not equal 0 then there exists an open and dense subset U subset of M such that (U, (g vertical bar U)) is ...
openaire +1 more source
Flow 2.0: A Standardized Toolbox for Real‐Time Phase‐Contrast MRI of Neurofluid Dynamics
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Real‐time phase‐contrast MRI (RT‐PC) enables continuous quantification of physiological flow dynamics across multiple temporal frequencies, but its broader application is limited by complex and fragmented post‐processing workflows.
Pan Liu, Olivier Balédent
wiley +1 more source
Journal of Microscopy, EarlyView.Abstract In the domain of battery research, the processing of high‐resolution microscopy images is a challenging task, as it involves dealing with complex images and requires a prior understanding of the components involved. The utilisation of deep learning methodologies for image analysis has attracted considerable interest in recent years, with ...
Ganesh Raghavendran +7 more
wiley +1 more source
Marchenko–Pastur Laws for Daniell Smoothed Periodograms
Journal of Time Series Analysis, EarlyView.ABSTRACT Given a sample X0,…,Xn−1$$ {X}_0,\dots, {X}_{n-1} $$ from a d$$ d $$‐dimensional stationary time series (Xt)t∈ℤ$$ {\left({X}_t\right)}_{t\in \mathbb{Z}} $$, the most commonly used estimator for the spectral density matrix F(θ)$$ F\left(\theta \right) $$ at a given frequency θ∈[0,2π)$$ \theta \in \left[0,2\pi \right) $$ is the Daniell smoothed ...
Ben Deitmar
wiley +1 more source
A Bochner formula for almost-quaternionic-Hermitian structures
Differential Geometry and its Applications, 2004 This paper deals with Riemannian manifolds whose structural group is reduced to \(Sp_n\cdot Sp_1\), also called almost quaternionic-Hermitian manifolds. The covariant derivative with respect to the Levi-Civita connection of the fundamental 4-form of such a manifold is naturally interpreted as the intrinsic torsion of the above \(G\)-structure and, as ...
Bor, Gil, Hernández Lamoneda, Luis
openaire +1 more source
Sparse Causal Dynamic Linear Regression
Journal of Time Series Analysis, EarlyView.ABSTRACT We develop a sparse causal dynamic regression framework for long multivariate time series. With very long time series, the potentially large number of lags and leads in a dynamic regression model often makes time‐domain estimation numerically unstable or intractable.
Rui Huang, Kung‐Sik Chan
wiley +1 more source
Shot‐Based Quantum Encoding: A Data‐Loading Paradigm for Quantum Neural Networks
Advanced Computing, Volume 1, Issue 1, December 2026.Shot‐based quantum encoding loads classical data without any encoding gates: a learned map turns each datum into a probability vector that dictates how many measurement shots start in each basis state, preparing a mixed state that a shallow variational circuit processes as a quantum perceptron layer.
Basil Kyriacou +3 more
wiley +1 more source