Results 21 to 30 of about 1,059 (266)
On rheonomic nonholonomic deformations of the Euler equations proposed by Bilimovich [PDF]
Theoretical and Applied Mechanics, 2020 In 1913 A. D. Bilimovich observed that rheonomic constraints which are linear and homogeneous in generalized velocities are ideal. As a typical example, he considered rheonomic nonholonomic deformation of the Euler equations whose scleronomic version is ...
Borisov A.V., Tsiganov A.V.
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Positive trigonometric quadrature formulas and quadrature on the unit circle [PDF]
Mathematics of Computation, 2011 We give several descriptions of positive quadrature formulas which are exact for trigonometric-, respectively, Laurent polynomials of degree less or equal to n
openaire +2 more sources
Some inverse problems of Fourier optics
Современная математика: Фундаментальные направления, 2023 We consider a general formulation of the problem of signal reconstruction from incomplete a priori information about it and measurements of the intensity of its Fourier transform.
V. E. Petrov
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East European Journal of PhysicsThe paper retrieves implicit quiescent optical solitons for the nonlinear Schr¨odinger’s equation that is taken up with nonlinear chromatic dispersion and linear temporal evolution.
Abdullahi Rashid Adem +4 more
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Output field-quadrature measurements and squeezing in ultrastrong cavity-QED
New Journal of Physics, 2016 We study the squeezing of output quadratures of an electro-magnetic field escaping from a resonator coupled to a general quantum system with arbitrary interaction strengths.
Roberto Stassi +4 more
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Solving linear differential equations by quadratures: comments on a general procedure
International Journal of Mathematics and Mathematical Sciences, 2000 A procedure is examined which solves systems of linear differential equations by quadratures. A direct check shows that a necessary condition for the procedure cannot be true and hence the procedure does not work.
G. Caviglia, A. Morro
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Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping
Advanced Materials, EarlyView.Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe +8 more
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Ultralow‐Dispersion Silicon THz Photonic Crystal Interconnects for Multichannel Datalinks
Advanced Materials, EarlyView.An all‐silicon terahertz photonic crystal waveguide interconnect enables 452 Gbps aggregate data transfer through seven complex‐modulated channels. By revealing the impact of ultralow dispersion on link performance and achieving a record interconnect figure of merit, the work advances centimeter‐scale THz on‐chip communication for future data‐centre ...
Nikhil Navaratna +4 more
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Boundary Value Problems, 2017 In this article, we devote ourselves to building a stabilized finite volume element (SFVE) method with a non-dimensional real together with two Gaussian quadratures of the nonlinear incompressible viscoelastic flow equation in a two-dimensional (2D ...
Hong Xia, Zhendong Luo
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Controlling Radiative Phonons in the van der Waals Ferroelectric NbOI2
Advanced Materials, EarlyView.Using a simple mirror geometry, this work demonstrates local‐density‐of‐optical‐states control of THz phonon emission in van der Waals ferroelectric NbOI2. By engineering the photonic environment, the phonon Q‐factor, linewidth, peak frequency, and emission intensity are reversibly tuned by over an order of magnitude, revealing radiative phonons as ...
Baolong Zhang +5 more
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