Results 31 to 40 of about 670,349 (316)
Note on Power Series with Integral Coefficients [PDF]
Journal of the London Mathematical Society, 1950 25. " The electron theory of the Hall effect and allied phenomena (II)," PM (6), 32 (1916), 200. 26.. " On the mechanical relations of the energy of magnetisation," PRS 93 (1916), 20. 27. " On the mechanical relations of dielectric and magnetic polarization,' PM (6), 32 (1916), 162. 28.
openaire +2 more sources
Numerical Study of Vertical Axis Wind Turbine with Spoiler Based on Orthogonal Experiments [PDF]
Journal of Applied Fluid MechanicsThis paper investigated using spoilers to improve the aerodynamic characteristics of vertical-axis wind turbines. Taking the NACA0012 airfoil as the research object, the orthogonal experimental method design was employed to combine the parameters of the ...
Z. Hao, K. Chen, T. Su, Z. Zhao, Q. Wang
doaj +1 more source
KARAKTERISTIK PEMANEN DAYA LISTRIK BERBASIS GETARAN STRUKTUR
Rekayasa Mesin, 2023 Mechanical vibration is a potential source of micro-electrical energy harvesting mechanisms for micro electrical power supply for IoT system networks, wireless and sensors where the power requirements are relatively lower and available independently.
La Ode Ahmad Barata, Samhuddin Samhuddin
doaj +1 more source
Power Injection and Free Resonance Decoupled Wireless Power Transfer System with Double-Switch
, 2023 This article presents a type of power injection and free resonance decoupled wireless power transfer (WPT) system, the double-switch independent power injection and free resonance wireless power transfer (IPIFR-WPT) system working in CCM.
Wei Wu +4 more
core +1 more source
Single-Stage Wireless Battery Charging Circuit with Coupling Coefficient Prediction
, 2021 This paper proposes a single-stage wireless battery charging circuit with a coupling coefficient prediction method. The proposed circuit consists of only two stages: full bridge inverter with transmitter coil in the first stage and full bridge rectifier ...
Young-Kyun Cho, Sang-Won Lee
core +1 more source
, 2023 Wind power systems participating in primary frequency regulation have become a novel trend. In order to solve the problem of the over-speed deloading (OSD) control of wind power systems failing to provide reserved capacity for primary frequency ...
Sipeng Hao +5 more
core +1 more source
The Coefficients of a Fibonacci Power Series
The Fibonacci Quarterly, 2004 We give a short proof of the result that all the coefficients of the series (1-x)(1-x^2)(1-x^3)(1-x^5)(1-x^8)(1-x^13)(1-x^21)... are equal to -1, 0, or 1, and most of them are equal to 0.
openaire +2 more sources
Analyzing coefficients of psychophysical power functions [PDF]
Perception & Psychophysics, 1993 Some mathematical properties of coefficients of power functions were analyzed. The size of correlations between intercepts (the logarithm of the coefficient) and exponents depends on the choice of unit of measurement of the physical stimuli. When the mean of logarithms of a set of responses is uncorrelated with the exponent, the absolute size of the ...
openaire +2 more sources
On-line estimation of the parameters of the windmill power coefficient
Systems & Control Letters, 2022 Wind turbines are often controlled to harvest the maximum power from the wind, which corresponds to the operation at the top of the bell-shaped power coefficient graph. Such a mode of operation may be achieved implementing an extremum seeking data-based strategy, which is an invasive technique that requires the injection of harmonic disturbances ...
Bobtsov, Alexey +3 more
openaire +3 more sources
Determination of weight coefficient for power system restoration
, 2012 This letter presents a novel method to determine the weight coefficient existing in the model of network reconfiguration during power system restoration.
Xu, Z, Ding, HL, Shi, L
core +1 more source