Zobrazeno 1 - 10
of 540
pro vyhledávání: '"frequency decomposition"'
Publikováno v:
Frontiers in Earth Science, Vol 12 (2024)
Seismic inversion is one of the key techniques used for reservoir characterization. Depth-domain seismic inversion eliminates the cumulative errors associated with depth-to-time and time-to-depth conversions, thus providing geologists and reservoir e
Externí odkaz:
https://doaj.org/article/fb5fcd197c074e1595285ff145a4eae9
Publikováno v:
In Neurocomputing 7 February 2025 617
Publikováno v:
AIMS Mathematics, Vol 9, Iss 1, Pp 1819-1830 (2024)
We considered the Boussinesq maximal estimate when $ n\geq1 $. We obtained the Boussinesq maximal operator $ \mathcal{B}_E^\ast f $ is bounded from $ L^2(\mathbb{R}^n) $ to $ L^2(\mathbb{R}^n) $ when $ f\in L^2(\mathbb{R}^n) $ and $ \text{supp}\; \ha
Externí odkaz:
https://doaj.org/article/bf8b2016a5404452af5af2403fe6b698
Autor:
Mathias Schneid Tessmann, Marcelo De Oliveira Passos, Omar Barroso Khodr, Alexandre Vasconcelos Lima, Pedro Henrique Pontes Fontana
Publikováno v:
Economies, Vol 12, Iss 6, p 149 (2024)
This paper seeks to investigate the connectivity of the US economy through the dynamics of the transmission of volatility in sectoral indices. For this, we use daily asset data and two methodologies. The first creates a spillover index that measures
Externí odkaz:
https://doaj.org/article/b0cc630241b241c88953734ef3decee6
Publikováno v:
Remote Sensing, Vol 16, Iss 12, p 2134 (2024)
Cross-domain scene classification requires the transfer of knowledge from labeled source domains to unlabeled target domain data to improve its classification performance. This task can reduce the labeling cost of remote sensing images and improve th
Externí odkaz:
https://doaj.org/article/7b5da316236448748e2c978f2125786e
Publikováno v:
Компьютерная оптика, Vol 46, Iss 6, Pp 939-947 (2022)
A new method for decomposing an image into separate objects of interest is proposed in the article. The developed method is based on the use of persistent homology. A process of direct and reverse image transformation is shown. Following direct trans
Externí odkaz:
https://doaj.org/article/080b44e8d86b4ff6a585fe003465a3f7
Publikováno v:
AIMS Mathematics, Vol 7, Iss 12, Pp 20850-20872 (2022)
The rapid development of fintech has caused a great impact on traditional financial industries. It improves the quality of financial services but also buries potential risks at the same time. This paper takes China's FinTech and traditional financial
Externí odkaz:
https://doaj.org/article/caff536e7c214dea94d0c216e9fea35e
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 8140-8150 (2022)
The problem of unstable output power in direct-drive wave power generation systems (DDWPGS) caused by violent power variation in one cycle of wave is common. The wave power fluctuates violently in a short time, and the lower the frequency, the higher
Externí odkaz:
https://doaj.org/article/a72ca82f84904ff7bf7de86922872809
Autor:
Sonia, Sunita, Tathagata Ghosh, Abdelfattah Amari, Virendra Kumar Yadav, Haitham Osman, Dipak Kumar Sahoo, Ashish Patel
Publikováno v:
Frontiers in Earth Science, Vol 11 (2023)
An arid climate is a unique condition that has a significant impact on the growth of crops and natural vegetation. The normalized difference vegetation index (NDVI) is a crucial remotely sensed measurement of greenness due to its strong correlation w
Externí odkaz:
https://doaj.org/article/f0d3922843b84b4080ccf1ccd9215845
Autor:
Xiaoou Li, Yingqin Zhu
Publikováno v:
Mathematics, Vol 12, Iss 8, p 1137 (2024)
This paper presents a novel data-driven approach for enhancing time series forecasting accuracy when faced with missing data. Our proposed method integrates an Echo State Network (ESN) with ARIMA (Autoregressive Integrated Moving Average) modeling, f
Externí odkaz:
https://doaj.org/article/277292ef0224466ea1320c184b684289