Results 11 to 20 of about 251,619 (265)
Transmission Eigenvalues for Operators with Constant Coefficients [PDF]
SIAM Journal on Mathematical Analysis, 2010 In this paper we study the interior transmission problem and transmission eigenvalues for multiplicative perturbations of linear partial differential operator of order $\ge 2$ with constant real coefficients. Under suitable growth conditions on the symbol of the operator and the perturbation, we show the discreteness of the set of transmission ...
Michael Hitrik +3 more
openaire +2 more sources
Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2023 The results of theoretical and experimental substantiation of the technique developed by the authors for the manufacture of heterogeneous (two- or three-layer) radio absorbing composite materials based on powdered charcoals are presented.
O. V. Boiprav +2 more
doaj +1 more source
MULTIPLET PROPERTIES IN THE SPECTRUM OF OSCILLATIONS OF COUPLED WAVEGUIDE RESONATORS CHAIN [PDF]
Радиофизика и электроника, 2017 The multiplet properties in the frequency dependence of the transmission coefficient of an electromagnetic wave through the chain of coupled waveguide resonators are investigated by means of a numerical experiment.
V. L. Pazynin
doaj +1 more source
EFFICIENCY PHYSICAL MODEL OF WAVE ENERGY DAMPING WITH PERMEABLE BREAKWATER
Jurnal Teknik Hidraulik, 2018 In this research calculates the efficiency of wave energy reduction by using permeable breakwater as an alternative coastal protection. The method used is to do physical modeling in the laboratory to get optimal efficiency.
Juventus Welly Ginting
doaj +1 more source
Journal of Marine Science and Engineering, 2021 Wave attenuation performance is the prime consideration when designing any floating breakwater. For a 2D hydrodynamic analysis of a floating breakwater, the wave attenuation performance is evaluated by the transmission coefficient, which is defined as ...
Huu Phu Nguyen +6 more
doaj +1 more source
Transmission coefficients of superconducting particles
Fine Chemical Technologies, 2021 Objectives. There is no general theory of superconductivity capable of fully describing this phenomenon, which imposes its own difficulties in the search for new superconducting materials, as well as in the study of their properties. In particular, the electrodynamics of a superconducting system is unexplored.
A. V. Matasov +2 more
openaire +3 more sources
Hydroelastic Response to the Effect of Current Loads on Floating Flexible Offshore Platform
Journal of Marine Science and Engineering, 2023 An analytical model of a current load’s interaction with a moored floating flexible structure based on the Timoshenko–Mindlin beam theory is developed under the assumption of small-amplitude wave theory and the structural response.
Pouria Amouzadrad +2 more
doaj +1 more source
Thermal mode of a room with integrated regulation of cooling systems
Magazine of Civil Engineering, 2021 An air-conditioned room with automatic regulation of the climate systems serving it using complex control algorithms is one of the most difficult objects for calculating non-stationary thermal regime, so to date, this method is insufficiently studied. At
Oleg Samarin
doaj +1 more source
Доклады Белорусского государственного университета информатики и радиоэлектроники, 2023 To study the S-parameters and dielectric permittivity of polycor and GaAs samples, a vector network analyzer R4-MWM-118 with a special measuring cell and a modified Nicholson–Ross–Weir method were used.
D. A. Kondrashov +4 more
doaj +1 more source
Mathematical Model of a Square Waveguide Polarizer with Diaphragms
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021 The development of new mathematical model for guide polarization converter with diaphragms was carried out in the research by the method of wave matrices.
Andrew Bulashenko +2 more
doaj +1 more source