Results 1 to 10 of about 10,690,097 (295)
A Low-Frequency Oscillator [PDF]
Review of Scientific Instruments, 1953 A low-frequency simple-harmonic oscillator, employing a relatively new method of approach, is described. An electronic analog computer of the differential analyzer type is used to solve the differential equation of a mass-spring system. Three dc operational amplifiers perform the computation and a sinusoidal output is obtained as the solution of the ...
Howe, Robert Milton +1 more
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Sub-Seasonal Prediction of Sea-Gale Processes in the Yangtze River Estuary of China
Atmosphere, 2023 The sea-gale process (SGP) is a significant and disastrous weather event for the marine industry. However, the sub-seasonal predictability of SGP remains unclear.
Xiao Xie, Ping Liang, Qiwen Qian
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Measurement-based solution for low frequency oscillation analysis
Journal of Modern Power Systems and Clean Energy, 2016 This paper presents a measurement-based solution for low frequency oscillation (LFO) analysis in both real time monitoring and off-line case study. An online LFO property discrimination method is developed first, which alternately uses empirical mode ...
Chen Shen +4 more
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Dianxin kexue, 2022 Aiming at the problems of large noise content of wide area measurement information of power grid and difficulty in controlling oscillation damping in interconnected areas of power grid, an automatic control technology of low frequency and low voltage ...
Mingliang GAO +3 more
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Damping of low-frequency oscillation using renewable generation units
Energy Reports, 2023 Nowadays there is a significant increase the number of generation units based on renewable energy sources in electric power systems, the main goal of which is to ensure global access to affordable, reliable, sustainable and modern sources of energy ...
Ruslan A. Ufa +2 more
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A Low Frequency Oscillator [PDF]
Nature, 1925 IT may be of interest to readers of NATURE who are working with low frequency to know of a new form of oscillator.
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A synthetic low-frequency mammalian oscillator [PDF]
Nucleic Acids Research, 2010 Circadian clocks have long been known to be essential for the maintenance of physiological and behavioral processes in a variety of organisms ranging from plants to humans. Dysfunctions that subvert gene expression of oscillatory circadian-clock components may result in severe pathologies, including tumors and metabolic disorders.
Tigges Marcel +4 more
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Journal of Modern Power Systems and Clean Energy, 2015 The low frequency oscillation characteristics of East China Power Grid after commissioning of the first ultra-high voltage alternating current (UHVAC) project-the Huai-Hu UHVAC project are studied. Several low frequency oscillation cases occurred in East
Chao Wang +7 more
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HIGH AND LOW FREQUENCY OSCILLATIONS IN DRUG EPIDEMICS [PDF]
International Journal of Bifurcation and Chaos, 2006 We extend the two-dimensional model of drug use introduced in [Behrens et al., 1999, 2000, 2002] by considering two additional states that represent in more detail newly initiated ("light") users' response to the drug experience. Those who dislike the drug quickly "quit" and briefly suppress initiation by others.
J. P. Caulkins +3 more
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Zhongguo dianli, 2021 How to swiftly determine the cause of the power system low-frequency oscillation and suppress it effectively is always a subject of great concern. A novel integrated solution is proposed to analyze and suppress the power system low-frequency oscillation ...
Risheng FANG +7 more
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