Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Junnan Gao"'
Publikováno v:
Journal of Low Frequency Noise, Vibration and Active Control, Vol 40 (2021)
In the damping design of blisks with hard coating, changing coating thickness is one of the frequently used ways for achieving better damping performance. Nevertheless, for the vibration analysis with variable coating thickness by using commercial fi
Externí odkaz:
https://doaj.org/article/a682e44e18aa4a83b541190e7368bd14
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 6, Pp 1-8 (2017)
In this paper, the adaptive layered asymmetrically clipped optical orthogonal frequency division multiplexing (LACO-OFDM) with variable layer is investigated. The channel capacities of the adaptive LACO-OFDM with different layers are formulated to de
Externí odkaz:
https://doaj.org/article/cfdc62572225491ca63fb07e4e85a6c3
Autor:
Fang Yang, Junnan Gao
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 1, Pp 1-12 (2017)
In this paper, in order to accommodate dimming demands for illumination, which is an essential requirement for visible light communication (VLC), a dimming control scheme with high power and spectrum efficiency is proposed. In the proposed method, a
Externí odkaz:
https://doaj.org/article/d9e7334ace9340c79884f602cab4ed2d
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 3, Pp 1-13 (2017)
In this paper, three hybrid modulation schemes for visible light communication based on orthogonal frequency division multiplexing (OFDM) are compared, which are asymmetrically clipped dc-biased optical OFDM, hybrid asymmetrically clipped optical OFD
Externí odkaz:
https://doaj.org/article/42d1d0e417024ec2a9a229d9a4a7b018
Publikováno v:
AIAA Journal. 58:2691-2701
Mistuning can break the cyclic symmetry of an ideally tuned blisk and cause its forced response to increase drastically. In the absence of cyclic symmetry, the finite element method (FEM) requires ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b8b409e48aa3d09dd097bf6666bb5d4
https://doi.org/10.2514/1.j058865
https://doi.org/10.2514/1.j058865
Publikováno v:
Archive of Applied Mechanics. 90:2007-2024
The thickness mistuning of coatings and blisks cannot be predicted before manufacturing process, and the mistuning patterns normally tend to be random, which has not been investigated in opened studies. A novel finite element model (FEM) is developed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c8d14132501b1f1b6e8688a74ced179c
https://doi.org/10.1007/s00419-020-01707-1
https://doi.org/10.1007/s00419-020-01707-1
Publikováno v:
Engineering Computations. 37:3387-3406
Purpose It is very important to create a useful cyclic symmetric model for the investigation of the vibration reduction effect of hard-coating blisk. This study aims to develop a cyclic symmetry algorithm which can determine the mode of blisk in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27844ffd9c1e84d45b040392e32ba7a9
https://doi.org/10.1108/ec-01-2020-0002
https://doi.org/10.1108/ec-01-2020-0002
Publikováno v:
Transactions of the Institute of Measurement and Control. :014233122311536
This paper investigates the issue of robust relative orbit synchronization control for spacecraft cluster subjects to space perturbation. First, the relative orbit dynamics of the leader-follower spacecraft cluster is established. Combined with P-typ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aac225984618a2ccd9ba475f27d6c076
https://doi.org/10.1177/01423312231153675
https://doi.org/10.1177/01423312231153675
Autor:
Jiaxu Lin1, Zijuan Liu1, Junnan Gao1, Yuanyuan Shen1, Xuelian Xin1, Yuyang Zhao2, Can Niu1, Xin Chen1, Xian Zhang1 zhangxian@hbu.edu.cn
Publikováno v:
Fresenius Environmental Bulletin. Feb2023, Vol. 32 Issue 2, p681-688. 8p.
Publikováno v:
Fresenius Environmental Bulletin. Jan2023, Vol. 32 Issue 1, p234-240. 7p.