scholarly journals Induced loudness reduction as a function of frequency difference between test tone and inducer

2008 ◽  
Vol 70 (4) ◽  
pp. 725-731 ◽  
Author(s):  
J. MAROZEAU ◽  
M. EPSTEIN
Keyword(s):  
Test Tone ◽  
Frequency Difference

The long-term instability of the new generation hydrogen masers

2020 ◽  
pp. 35-38
Author(s):  
S.I. Donchenko ◽  
I.Y. Blinov ◽  
I.B. Norets ◽  
Y.F. Smirnov ◽  
A.A. Belyaev ◽  
...  
Keyword(s):  
Time Scale ◽  
Frequency Difference ◽  
Clock Frequency ◽  
Quantum Frequency ◽  
Frequency Standards ◽  
Quantum Frequency Standards ◽  
New Generation ◽  
Atomic Time

The latest changes in the algorithm for the formation of the international atomic time scale TAI are reported in terms of estimating the weights of the clocks involved in the formation of TAI. Studies of the characteristics of the long-term instability of new-generation hydrogen masers based on processing the results of the clock frequency difference with respect to TAI are performed. It has been confirmed that at present, new-generation hydrogen masers show significantly less long-term instability in comparison with quantum frequency standards ofsimilar and other types.

scholarly journals Audiograms, gap detection thresholds, and frequency difference limens in cannabinoid receptor 1 knockout mice

2016 ◽  
Vol 332 ◽  
pp. 217-222 ◽  
Author(s):  
Katrina L. Toal ◽  
Kelly E. Radziwon ◽  
David P. Holfoth ◽  
Matthew A. Xu-Friedman ◽  
Micheal L. Dent
Keyword(s):  
Knockout Mice ◽  
Cannabinoid Receptor ◽  
Frequency Difference ◽  
Gap Detection ◽  
Cannabinoid Receptor 1 ◽  
Detection Thresholds

Performance comparisons of frequency-difference and conventional beamforming

2017 ◽  
Vol 142 (3) ◽  
pp. 1663-1673 ◽  
Author(s):  
Alexander S. Douglass ◽  
H. C. Song ◽  
David R. Dowling
Keyword(s):  
Frequency Difference ◽  
Performance Comparisons

scholarly journals Optimization of Year-End Water Level of Multi-Year Regulating Reservoir in Cascade Hydropower System Considering the Inflow Frequency Difference

Energies ◽  
2020 ◽  
Vol 13 (20) ◽  
pp. 5345
Author(s):  
Zhiqiang Jiang ◽  
Peibing Song ◽  
Xiang Liao
Keyword(s):  
Power Generation ◽  
Dynamic Programming ◽  
Water Level ◽  
Water Levels ◽  
Least Square ◽  
Frequency Difference ◽  
Impact Factors ◽  
Cascade System ◽  
Cascade Reservoirs ◽  
Hydropower System

In order to analyze the year-end water level of multi-year regulating reservoir of the cascade hydropower system, this paper studied the joint operation optimization model of cascade reservoirs and its solving method based on multi-dimensional dynamic programming, and analyzed the power generation impact factors of cascade system that contains multi-year regulating reservoir. In particular, taking the seven reservoirs in the middle and lower reaches of Yalong River as an example, the optimal year-end water levels of multi-year regulating reservoir under the multi-year average situation and different inflow frequencies situation were studied. Based on the optimal calculation results of multi-dimensional dynamic programming, the inflow frequency difference considered operation rule of year-end water level of Lianghekou reservoir was extracted using the least square principle. The simulation results showed that, compared with the fixed year-end water level in multi-year, the extracted rule can improve the cascade power generation by more than 400 million kWh in an average year, representing an increase of 0.4%. This result means that the extracted rule can give full play to the regulation performance of multi-year regulating reservoir and improve the conversion efficiency of hydropower resources in cascade system. This is of great significance to the practical operation of cascade reservoirs system that contains multi-year regulating reservoir.

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