Results 111 to 120 of about 4,334 (266)
Stimulated Forward Brillouin Scattering in Subwavelength Grating Silicon Membranes
Laser &Photonics Reviews, EarlyView.This work proposes a novel strategy to achieve large Brillouin scattering with independent control of the optical and mechanical modes using subwavelength silicon membranes. We experimentally demonstrate remarkably high Brillouin gain, resulting in an on/off Stokes gain of 3 dB and anti‐Stokes loss of 4 dB in a 6 mm‐long waveguide with 35 mW of on‐chip
Paula Nuño Ruano +8 more
wiley +1 more source
MedUNAB, 2014 La Ley 1753 del 9 de junio de 2015 por la cual se promulgó el Plan Nacional de Desarrollo 2014 – 2018 (PND) contiene en cinco artículos (artículos 5º, 7º, 10º, 12º, y 186º) una reforma estructural del Sistema Nacional de Ciencia, Tecnología e Innovación (
Bernardo Useche Aldana, PhD
doaj
Lattice Resonances in Periodic Arrays of Time‐Modulated Scatterers
Laser &Photonics Reviews, EarlyView.This work explores how periodic time modulation alters the collective optical behavior of periodic arrays of scatterers, shedding light on the critical role of collective effects in time‐varying photonic systems and unveiling new opportunities for amplification, active control, and nonreciprocal functionalities.
María Blanco de Paz +3 more
wiley +1 more source
Author Correction: On the generation of internal waves by river plumes in subcritical initial conditions. [PDF]
Sci Rep, 2023 Mendes R +6 more
europepmc +1 more source
Four‐Dimensional pp‐Wave Lie Groups and Harmonic Curvature
Mathematische Nachrichten, EarlyView.ABSTRACT We determine all four‐dimensional Lie groups which have harmonic curvature. In parallel, a description of four‐dimensional pp‐wave Lie groups is obtained.
E. García‐Río +2 more
wiley +1 more source
MERCADEO, COMPETITIVIDAD Y SOSTENIBILIDAD
Estudios Gerenciales, 1999 Por estos días la industria colombiana atraviesa por una gran crisis que la mayoría de los expertos consideran coyuntural, y lo que es peor, sólo pocos hacen un análisis retrospectivo y encuentran que en realidad se trata de dos crisis: una coyuntural y la otra de carácter estructural.
openaire +2 more sources
Movement Disorders, EarlyView.Abstract Background Neuroinflammation, measured using [11C](R)‐PK11195 positron emission tomography (PET), has been reported in isolated rapid‐eye‐movement sleep behavior disorder (iRBD), but its temporal progression is unknown. Objective The aim was to assess longitudinal progression of neuroinflammation in iRBD patients and its relationship with ...
Andreas Myhre Baun +17 more
wiley +1 more source
High Relative Accuracy Computations With Covariance Matrices of Order Statistics
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT In many statistical applications, numerical computations with covariance matrices need to be performed. The error made when performing such numerical computations increases with the condition number of the covariance matrix, which is related to the number of variables and the strength of the correlation between the variables. In a recent work,
Juan Baz +3 more
wiley +1 more source
Sundman‐Like Transformations and the NRT Nonlinear Schrödinger Equation
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT We present a new generalization of the well‐known power‐type Sundman transformation, involving not only powers of the function but also of its derivative, along with its inverse. Our aim is to explore the use of such transformations in the derivation of solutions of ordinary differential equations and in the study of their properties.
P. R. Gordoa +3 more
wiley +1 more source