Zobrazeno 1 - 10
of 1 047
pro vyhledávání: '"periodic oscillation"'
Autor:
Eunju Hwang
Publikováno v:
Forecasting, Vol 6, Iss 1, Pp 18-35 (2023)
Daily data on COVID-19 infections and deaths tend to possess weekly oscillations. The purpose of this work is to forecast COVID-19 data with partially cyclical fluctuations. A partially periodic oscillating ARIMA model is suggested to enhance the pre
Externí odkaz:
https://doaj.org/article/32802a47aeee423287f386a529216258
Publikováno v:
Applied Sciences, Vol 14, Iss 16, p 7329 (2024)
Ocean circulation plays an important role in the formation and occurrence of extreme climate events. The study shows that the periodic variation of ocean circulation under strong wind stress is closely related to climate oscillation. Ocean circulatio
Externí odkaz:
https://doaj.org/article/fbc513c67107488b935d11d1a80c845d
Autor:
He Lu, Tingfeng Yi, Yanke Tang, Junjie Wang, Shun Zhang, Liang Wang, Yutong Chen, Yuncai Shen, Liang Dong, Yangwei Zhang
Publikováno v:
Universe, Vol 10, Iss 6, p 242 (2024)
We report the results of time series analysis of blazar PKS 1440-389, observed by the Transiting Exoplanet Survey Satellite (TESS) in two sectors. We find that the source has a quasi-periodic oscillation (QPO) of about 3.1 days for sector 11 and arou
Externí odkaz:
https://doaj.org/article/5b689e11d2dc4f59ba1d3fb33781aacd
Autor:
Chunhua Feng
Publikováno v:
Journal of Mahani Mathematical Research, Vol 12, Iss 2, Pp 513-527 (2023)
A five coupled Kaldor-Kalecki economic model with one delay appeared in the literature, in which the periodic solution of the model was verified by numerical analysis. The periodic solution is an important characteristic of the mutual interactions of
Externí odkaz:
https://doaj.org/article/28eae6a997c5493ebe6f17f8b38319de
Publikováno v:
Axioms, Vol 13, Iss 3, p 147 (2024)
Taking into account the effects of the immune response and delay, and complexity on HIV-1 transmission, a multiscale AIDS/HIV-1 model is formulated in this paper. The multiscale model is described by a within-host fast time model with intracellular d
Externí odkaz:
https://doaj.org/article/f74ea2b4117b4a788ed9e90278999e0b
Publikováno v:
IEEE Access, Vol 11, Pp 29128-29137 (2023)
Two microwave photonic signal processing structures, which are capable to realise microwave frequency division with a tunable integer or non-integer division ratio, are presented. They are based on applying an RF signal into a Mach Zehnder modulator,
Externí odkaz:
https://doaj.org/article/7b37920890d945d0a15d54a9e45f317c
Autor:
Hao Chen, Erwin H. W. Chan
Publikováno v:
IEEE Access, Vol 11, Pp 16368-16375 (2023)
This paper presents a detailed experimental investigation of the nonlinear dynamics of a dual-beam optically injected semiconductor laser. Unlike previous works, we focus on the situation where the power and the frequency of the injection light wave
Externí odkaz:
https://doaj.org/article/1aedc746083f44c8b724f66a6942ca73
Autor:
Sandro W. Lubis, Pedram Hassanzadeh
Publikováno v:
AGU Advances, Vol 4, Iss 3, Pp n/a-n/a (2023)
Abstract The variability of the Southern Hemisphere (SH) extratropical large‐scale circulation is dominated by the Southern Annular Mode (SAM), whose timescale is extensively used as a key metric in evaluating state‐of‐the‐art climate models.
Externí odkaz:
https://doaj.org/article/f00f151bf2cd49edb38c04eb6370d130
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Akademický článek
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