Results 1 to 10 of about 498,379 (157)

Research on the law of reflection coefficient of reflective film of traffic sign based on Angle [PDF]

open access: yesMATEC Web of Conferences, 2022
In this paper, a large number of digital printing reflective film retroreflectivity measurement. Based on the multi-angle test of the reflective film of the mainstream manufacturers in the market, the reverse reflection coefficient of the digital ...
Meng Yu   +6 more
doaj   +1 more source

STUDY OF REFLECTION COEFFICIENT DISTRIBUTION FOR ANTI-REFLECTION COATINGS ON SMALL-RADIUS OPTICAL PARTS [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
The paper deals with findings for the energy reflection coefficient distribution of anti- reflection coating along the surface of optical elements with a very small radius (2-12 mm).
L. A. Gubanova, H. L. Thang, T. D. Tan
doaj   +1 more source

Metamaterial Design with Nested-CNN and Prediction Improvement with Imputation

open access: yesApplied Sciences, 2022
Metamaterials, which are not found in nature, are used to increase the performance of antennas with their extraordinary electromagnetic properties.
Erkan Kıymık, Ergun Erçelebi
doaj   +1 more source

Reflection Coefficient Stability Criterion for Multi-Bus Multi-VSC Power Systems

open access: yesIEEE Access, 2020
This paper proposes a reflection coefficient stability criterion for multi-bus power systems with multiple voltage-source converters (VSCs). In the method, VSCs are modeled as two-port networks, which are then characterized by the incident and reflected ...
Shih-Feng Chou   +2 more
doaj   +1 more source

EXPLORING CORTICAL BONE DENSITY THROUGH THE ULTRASOUND INTEGRATED REFLECTION COEFFICIENT [PDF]

open access: yesActa Ortopédica Brasileira, 2018
Objective: This work evaluates the relationship between ultrasonic reflection and bone density from fourteen cylindrical bovine cortical bone samples (3.0-cm thick).
Daniel Patterson Matusin   +6 more
doaj   +2 more sources

On matrix coefficients of the reflection representation [PDF]

open access: yesProceedings of the American Mathematical Society, 1989
Based on a paper of \textit{D. Kazhdan} and \textit{G. Lusztig} [Invent. Math. 53, 165-184 (1979; Zbl 0499.20035)] the authors consider the following situation: Assume (\({\mathcal W},S)\) is an indecomposable Coxeter pair where \({\mathcal W}\) is a finite Weyl group with length function \(\ell (.)\).
Douglass, J. Matthew, Shelton, Brad
openaire   +1 more source

Research on reflection characteristics of the terahertz channel for 6G

open access: yesTongxin xuebao, 2022
The reflection characteristics of the terahertz channel are crucial for understanding and mastering the propagation mechanism of the terahertz channel, which are also required for a high-precision terahertz channel model for 6G.Therefore, the research ...
Pan TANG   +6 more
doaj   +2 more sources

Normality of a non-linear transformation of AR parameters: application to reflection and cepstrum coefficients [PDF]

open access: yes, 1997
Two sets of random vectors cannot both be Gaussian if they are nonlinearly related. Thus, Autoregressive (AR)parameters and reflection coefficient (resp. cepstrum coefficient) estimators cannot both be Gaussian for a finite number of samples.
Tourneret, Jean-Yves
core   +2 more sources

Active Control of the Reflection Coefficient of an Underwater Surface

open access: yesAcoustics, 2023
From a strategic point of view, it is essential to protect underwater vehicles from being detected by opponents. Modern mono- or bistatic sonar systems are capable of precisely determining the position of a watercraft.
Johannes Timmermann   +2 more
doaj   +1 more source

Robust state controller via reflection coefficient assignment; pp. 38–47 [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2011
A solution to the robust pole assignment problem via reflection coefficients of polynomials is provided for discrete-time single-input single-output (SISO) and multi-input multi-output (MIMO) linear systems. For SISO systems a robust state controller and
Ülo Nurges
doaj   +1 more source

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