scholarly journals Magnetic conjugacy of Pc1 waves and isolated proton precipitation at subauroral latitudes: Importance of ionosphere as intensity modulation region

2021 ◽  
Author(s):  
Mitsunori Ozaki ◽  
Kazuo Shiokawa ◽  
Richard B. Horne ◽  
Mark J. Engebretson ◽  
Marc Lessard ◽  
...  
Keyword(s):  
Intensity Modulation ◽  
Modulation Region ◽  
Proton Precipitation ◽  
Magnetic Conjugacy

Analogue intensity modulation schemes for optical fibre HDTV transmission

1993 ◽  
Vol 140 (6) ◽  
pp. 417
Author(s):  
J.M. Senior ◽  
D.T. Lambert ◽  
D.W. Faulkner
Keyword(s):  
Optical Fibre ◽  
Intensity Modulation ◽  
Modulation Schemes

Current Distortion Analysis of Three-Phase PWM Rectifier in Over-Modulation Region and Application to Air-Cooled Heat Pump Chiller

2020 ◽  
Vol 140 (9) ◽  
pp. 633-641
Author(s):  
Yohei Kubota ◽  
Keiichi Ishida ◽  
Masaki Kanamori ◽  
Yuki Yanase ◽  
Takahisa Endo ◽  
...  
Keyword(s):  
Heat Pump ◽  
Pwm Rectifier ◽  
Three Phase ◽  
Distortion Analysis ◽  
Modulation Region

Laser displacement measurement using intensity modulation with a phase-modulated radio-frequency signal

2020 ◽  
Vol 14 (1) ◽  
pp. 012004
Author(s):  
Yosuke Tanaka ◽  
Kyosuke Yamaguchi ◽  
Kenta Yamamoto ◽  
Yoshiki Yamada
Keyword(s):  
Radio Frequency ◽  
Intensity Modulation ◽  
Displacement Measurement ◽  
Frequency Signal ◽  
Radio Frequency Signal

scholarly journals Reduction of Phase-Modulation to Intensity-Modulation Conversion Noise Effect Using Delayed Self-Homodyne Optical Orthogonal Frequency Division Multiplexing System

2021 ◽  
Vol 13 (1) ◽  
pp. 1-17
Author(s):  
Younus Nidham Ali Mandalawi ◽  
Syamsuri Yaakob ◽  
Wan Azizun Wan Adnan ◽  
Raja Syamsul Azmir Raja Abdullah ◽  
Mohd Hanif Yaacob ◽  
...  
Keyword(s):  
Phase Modulation ◽  
Orthogonal Frequency Division Multiplexing ◽  
Intensity Modulation ◽  
Frequency Division Multiplexing ◽  
Frequency Division ◽  
Noise Effect

scholarly journals Turbulence Intensity Modulation by Micropolar Fluids

Fluids ◽  
2021 ◽  
Vol 6 (6) ◽  
pp. 195
Author(s):  
George Sofiadis ◽  
Ioannis Sarris
Keyword(s):  
Reynolds Number ◽  
Turbulence Intensity ◽  
Fluid Flows ◽  
Turbulent Channel Flow ◽  
High Volume ◽  
Reynolds Numbers ◽  
Intensity Modulation ◽  
Wall Turbulence ◽  
Volume Fractions ◽  
Physical Phenomena

Fluid microstructure nature has a direct effect on turbulence enhancement or attenuation. Certain classes of fluids, such as polymers, tend to reduce turbulence intensity, while others, like dense suspensions, present the opposite results. In this article, we take into consideration the micropolar class of fluids and investigate turbulence intensity modulation for three different Reynolds numbers, as well as different volume fractions of the micropolar density, in a turbulent channel flow. Our findings support that, for low micropolar volume fractions, turbulence presents a monotonic enhancement as the Reynolds number increases. However, on the other hand, for sufficiently high volume fractions, turbulence intensity drops, along with Reynolds number increment. This result is considered to be due to the effect of the micropolar force term on the flow, suppressing near-wall turbulence and enforcing turbulence activity to move further away from the wall. This is the first time that such an observation is made for the class of micropolar fluid flows, and can further assist our understanding of physical phenomena in the more general non-Newtonian flow regime.

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