Results 11 to 20 of about 6,548 (196)

The relationship between seismic quality factor and peak ground acceleration, a case study: M=4.3, 17.01.2015 Eskişehir Earthquake

open access: yesBulletin of the Mineral Research and Exploration, 2021
Seismic wave propagation in subsurface media endures from absorption, which can be evaluated by the seismic quality factor Q (Q-factor). Absorption is frequency-dependent.
Muammer Tün
doaj   +1 more source

Effect of Electrode Thickness on Quality Factor of Ring Electrode QCM Sensor

open access: yesSensors, 2022
As a key type of sensor, the quartz crystal microbalance (QCM) has been widely used in many research areas. Recently, the ring electrode QCM sensor (R-QCM) with more uniform mass sensitivity has been reported.
Zhenfang Wei   +3 more
doaj   +1 more source

Performance Model for Video Service in 5G Networks

open access: yesFuture Internet, 2020
Network slicing allows operators to sell customized slices to various tenants at different prices. To provide better-performing and cost-efficient services, network slicing is looking to intelligent resource management approaches to be aligned to users ...
Jiao Wang   +4 more
doaj   +1 more source

Enhanced FANO Structure Based on Tip-Field-Enhancement Theory

open access: yesApplied Sciences, 2019
High-Q metasurfaces have attracted much interest owing to their potential application in biological sensors. FANO is a type of high-Q factor metasurface.
Tianchi Zhou   +6 more
doaj   +1 more source

Experimental Study on Variation of Surface Roughness and Q Factors of Fused Silica Cylindrical Resonators with Different Grinding Speeds

open access: yesMicromachines, 2021
For the axisymmetric shell resonator gyroscopes, the quality factor (Q factor) of the resonator is one of the core parameters limiting their performances.
Libin Zeng   +5 more
doaj   +1 more source

Quality factor control of mechanical resonators using variable phononic bandgap on periodic microstructures

open access: yesScientific Reports, 2022
The quality factor (Q-factor) is an important parameter for mechanical resonant sensors, and the optimal values depend on its application. Therefore, Q-factor control is essential for microelectromechanical systems (MEMS).
Naoki Inomata, Yuka Tonsho, Takahito Ono
doaj   +1 more source

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

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   +1 more source

q-Factors and Investment CAPM [PDF]

open access: yesSSRN Electronic Journal, 2019
The Hou–Xue–Zhang q-factor model says that the expected return of an asset in excess of the risk-free rate is described by its sensitivities to the market factor, a size factor, an investment factor, and a return on equity (ROE) factor. Empirically, the q-factor model shows strong explanatory power and largely summarizes the cross-section of average ...
openaire   +1 more source

Air Damping Analysis of a Micro-Coriolis Mass Flow Sensor

open access: yesSensors, 2022
A micro-Coriolis mass flow sensor is a resonating device that measures small mass flows of fluid. A large vibration amplitude is desired as the Coriolis forces due to mass flow and, accordingly, the signal-to-noise ratio, are directly proportional to the
Yaxiang Zeng   +3 more
doaj   +1 more source

Defocus Curve and Satisfaction of Patients with Presbyopia After LASIK Using the Differential Modulation of Binocular Longitudinal Spherical Aberration

open access: yesClinical Ophthalmology, 2023
Jun Zhang, Jie Shao, Xinfang Cao, Yonggang Zhang, Li Zheng Department of Ophthalmology, Hangzhou MSK Eye Hospital, Hangzhou, People’s Republic of ChinaCorrespondence: Jun Zhang, Hangzhou MSK Eye Hospital, No. 384, Fengqi Road, Gongshu District, Hangzhou,
Zhang J, Shao J, Cao X, Zhang Y, Zheng L
doaj  

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