Zobrazeno 1 - 10
of 119
pro vyhledávání: '"Zhifu Li"'
Publikováno v:
Mathematics, Vol 12, Iss 8, p 1197 (2024)
Piezoelectric-actuated precision positioning stages are widely used in high-precision instruments and high-end equipment due to their advantages of high resolution, fast response, and compact size. However, due to the strong nonlinearity of hysteresi
Externí odkaz:
https://doaj.org/article/ecc9f679404c4603b05c4b2314e7b5ca
Publikováno v:
Journal of Marine Science and Engineering, Vol 12, Iss 2, p 272 (2024)
The interaction problem of waves with a body floating near the marginal ice zone is studied, where the marginal ice zone is modeled as an array of multiple uniformly sized floating ice sheets. The linear velocity potential theory is applied for fluid
Externí odkaz:
https://doaj.org/article/c5cf963d91354e49a59395ab66f8485b
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
This study investigates the potential of vortex-induced vibration (VIV) as a renewable energy source, achieved when fluid flow interacts with a bluff body, inducing self-sustained oscillations through vortex shedding in the wake. While VIV research h
Externí odkaz:
https://doaj.org/article/a3d40d97372246bf8371efbb312b84ad
Publikováno v:
Frontiers in Public Health, Vol 10 (2022)
The purpose of this study was to evaluate the relationship between the physical activity of Chinese college students and the physical activity of their parents. This relationship was examined by linear regression. The results showed that (1) the phys
Externí odkaz:
https://doaj.org/article/c00a24e3f8db40ac946ee77ba9081f32
Publikováno v:
Frontiers in Public Health, Vol 10 (2022)
The aim of the present study was to evaluate the association between participation in physical activity and subjective class identity of people in urban and rural areas of China. The effect of social class identity on residents' physical activity was
Externí odkaz:
https://doaj.org/article/6d8e2e61c2ba482e817b0fbbb0aae697
Publikováno v:
IEEE Access, Vol 8, Pp 176062-176072 (2020)
In this paper, based on backstepping technique and time delay estimation (TDE) technique, an adaptive time delay compensation control scheme is developed for a class of piezoelectric positioning mechanical systems with Bouc-Wen hysteresis and input s
Externí odkaz:
https://doaj.org/article/3ca07dca4eab42e8be131d6d777d677f
Publikováno v:
Mathematics, Vol 10, Iss 21, p 3942 (2022)
Image edge is the most indicative feature that forms a significant role in image analysis and image understanding, but edge-detail preservation is a difficult task in image restoration due to noise and blur during imaging. The balance between edge pr
Externí odkaz:
https://doaj.org/article/4f80a55cd9b74348a1b822d13c079685
Publikováno v:
IEEE Access, Vol 7, Pp 86863-86873 (2019)
Iterative deadlock prevention strategies based on siphons have drawn increasing attention. For iterative strategies, selecting which siphon to control at each iteration has an influence on the final supervisor in structural complexity, computational
Externí odkaz:
https://doaj.org/article/00aa4cc2e99c4ad9af87f7164a9f2b16
Publikováno v:
Complexity, Vol 2020 (2020)
As energy-harvesting wireless sensor networks (EHWSNs) are increasingly integrated with all walks of life, their security problems have gradually become hot issues. As an attack means, malicious programs often attack sensor nodes in critical location
Externí odkaz:
https://doaj.org/article/b272411202984494a238546518a4e715
Publikováno v:
Energies, Vol 8, Iss 11, Pp 12848-12864 (2015)
Coal-fired thermal power plants, which represent the largest proportion of China’s electric power system, are very sluggish in responding to power system load demands. Thus, a reasonable and feasible scheme for the medium-term optimal commitment of
Externí odkaz:
https://doaj.org/article/fcea01d2875c47828fe5986249772c96