Results 1 to 10 of about 18,433,311 (402)

Iterative optimization of photonic crystal nanocavity designs by using deep neural networks [PDF]

open access: yesNanophotonics, 2019
Devices based on two-dimensional photonic-crystal nanocavities, which are defined by their air hole patterns, usually require a high quality (Q) factor to achieve high performance.
Asano Takashi, Noda Susumu
doaj   +2 more sources

Efficient Excitation and Tuning of Multi-Fano Resonances with High Q-Factor in All-Dielectric Metasurfaces. [PDF]

open access: yesNanomaterials (Basel), 2022
Exciting Fano resonance can improve the quality factor (Q-factor) and enhance the light energy utilization rate of optical devices. However, due to the large inherent loss of metals and the limitation of phase matching, traditional optical devices based ...
Wang Y   +9 more
europepmc   +2 more sources

On factorization of $q$-difference equation for continuous $q$-ultraspherical polynomials [PDF]

open access: yesarXiv, 2007
We prove that a customary Sturm-Liouville form of second-order $q$-difference equation for the continuous $q$-ultraspherical polynomials $C_n(x; | q)$ of Rogers can be written in a factorized form in terms of some explicitly defined $q$-difference operator ${\mathcal D}_x^{ , q}$.
Area, I., Atakishiyeva, M. K., Rodal, J.
openaire   +3 more sources

An automatic Q-factor matching method for eliminating 77% of the ZRO of a MEMS vibratory gyroscope in rate mode. [PDF]

open access: yesMicrosyst Nanoeng
Mismatching quality factors (Q-factors) is one of the main factors causing zero-rate output (ZRO) in degenerate (DE) Micro-Electro-Mechanical Systems (MEMS) vibratory gyroscopes.
Ren J, Zhou T, Zhou Y, Li Y, Su Y.
europepmc   +2 more sources

Ultra-Narrow-Band Filter Based on High Q Factor in Metallic Nanoslit Arrays. [PDF]

open access: yesSensors (Basel), 2020
Here we propose a novel high Q ultra-narrow-band filter in the optical regime. Multiple high Q resonances are achieved in ultra-thin metallic nanoslit arrays on stacked low index–high index dielectric (LID–HID) substrate.
Guo L, Guo M, Yang H, Ma J, Chen S.
europepmc   +2 more sources

Impact of factor rotation on Q-methodology analysis

open access: yesPLOS ONE, 2023
The Varimax and manual rotations are commonly used for factor rotation in Q-methodology; however, their effects on the results may not be well known. In this article we investigate the impact of different factor rotation techniques in Q-methodology, specifically how the factors and their distinguishing statements might be affected.
Noori Akhtar-Danesh
doaj   +6 more sources

Performance study of a coexistence system in a PON network taking into account the stimulated scattering of Raman [PDF]

open access: yesE3S Web of Conferences, 2022
Some problems introduced by the need for coexistence between a Passive Optical Network PON technologies (GPON, XGS-PON, and NG-PON2 in particular) especially the Stimulated Raman Scattering SRS which appears when different PON technologies transfer ...
Kherici Cheikh, Kandouci Malika
doaj   +1 more source

Developing Q-factor and Adjusted Q-factor Pricing Models by the Expected Investment Growth Factor using an Expected Return Factor [PDF]

open access: yesتحقیقات مالی, 2022
Objective: Identifying the correct asset pricing model has long been an important topic in the thematic literature of financial economics. Such a model not only explains stock returns but also increases the ability to predict abnormal returns.
Sanaz Aalamifar   +2 more
doaj   +1 more source

ДОСЛІДЖЕННЯ РЕЗОНАНСНИХ ЯВИЩ В ЕЛЕКТРИЧНОМУ КОЛІ СИЛОВОГО ТРАНСФОРМАТОРА 10/0,4 КВ З КОНДЕНСАТОРНОЮ БАТАРЕЄЮ

open access: yesПраці Інституту електродинаміки Національної академії наук України, 2023
The processes in the electrical network with power transformers 10/0.4 kV with capacitor banks were investigated for the occurrence of resonance of voltages and currents at the main frequency of three-phase alternating current 50 Hz, as well as at ...
А.О. Омельчук
doaj   +1 more source

Determination of the input filter parameters of the active rectifier with a fixed modulation frequency

open access: yesElectrical engineering & Electromechanics, 2022
Goal. Development of a methodology for calculating the parameters of the active rectifier-voltage source input filter operating with a fixed modulation frequency to ensure electromagnetic compatibility with the supply network acceptable by standards at ...
D. S. Krylov, O. I. Kholod
doaj   +1 more source

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