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- 저자 : ( Xinfeng Feng ) (검색결과 6 건)
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A Corpus-based Analysis of Chinese EFL Learners` Use of Linking Adverbials
( Xinfeng Feng ),( Mun Hong Choe ) 대한언어학회 2016 언어학 Vol.24 No.1
This study investigated how the learners of English as a foreign language make use of linking adverbials (LAs) in academic writing, specifically concerned with the developmental aspects of Chinese college students’ ability to utilize them in argumentative essays. A corpus-based analysis was conducted with a learner corpus composed of four sub-corpora with respect to each year in college and a control corpus of English L1 writers’ essays. The results show that Chinese students use LAs excessively as compared to L1 writers. They overuse causal and sequential LAs across all years of study while gradually approaching the target norms in use of additive and adversative LAs. The frequencies of overused LAs fluctuate over time and then eventually decrease in the fourth year. They produce more various LAs as the amount of exposure and learning experience increases. However, they still tend to rely on a small number of LAs and overuse them in prefabricated patterns.
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( Xin Feng ),( Wei Gao ),( Yao Li ) 대한내과학회 2017 The Korean Journal of Internal Medicine Vol.32 No.5
Background/Aims: We demonstrated the role of caveolin-<sub>1</sub> involved in high glu-cose (HG)-induced glomerular mesangial cells (GMCs) senescence. Methods: HG was used to stimulate GMCs. The telomere lengths were analyzed by Southern blot. β-Galactosidase staining was determined. The expressions of caveolin-1 and P<sub>53</sub> proteins were determined by Western blot. Results: Treatment with high concentrations of glucose induced GMC senescence accompanied by shortened telomere length and increase of β-galactosidase stain-ing as well as P<sub>53</sub> protein, which was abrogated after application of caveolin-<sub>1</sub>- siRNA. Conclusions: This study proved that HG induced cell senescence in GMCs. The caveolin-<sub>1</sub> is involved in HG-induced mesangial cell senescence, and blocking ca-veolin-<sub>1</sub> significantly reduced cell senescence. The effect of caveolin-1 is mediated by P<sub>53</sub> pathway.
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Infrared and Visible Image Fusion Based on NSCT and Deep Learning
Xin Feng 한국정보처리학회 2018 Journal of information processing systems Vol.14 No.6
An image fusion method is proposed on the basis of depth model segmentation to overcome theshortcomings of noise interference and artifacts caused by infrared and visible image fusion. Firstly, the deepBoltzmann machine is used to perform the priori learning of infrared and visible target and backgroundcontour, and the depth segmentation model of the contour is constructed. The Split Bregman iterativealgorithm is employed to gain the optimal energy segmentation of infrared and visible image contours. Then,the nonsubsampled contourlet transform (NSCT) transform is taken to decompose the source image, and thecorresponding rules are used to integrate the coefficients in the light of the segmented background contour. Finally, the NSCT inverse transform is used to reconstruct the fused image. The simulation results ofMATLAB indicates that the proposed algorithm can obtain the fusion result of both target and backgroundcontours effectively, with a high contrast and noise suppression in subjective evaluation as well as great meritsin objective quantitative indicators.
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Perceptual Fusion of Infrared and Visible Image through Variational Multiscale with Guide Filtering
Xin Feng,Kaiqun Hu 한국정보처리학회 2019 Journal of information processing systems Vol.15 No.6
To solve the problem of poor noise suppression capability and frequent loss of edge contour and detailedinformation in current fusion methods, an infrared and visible light image fusion method based on variationalmultiscale decomposition is proposed. Firstly, the fused images are separately processed through variationalmultiscale decomposition to obtain texture components and structural components. The method of guidedfilter is used to carry out the fusion of the texture components of the fused image. In the structural componentfusion, a method is proposed to measure the fused weights with phase consistency, sharpness, and brightnesscomprehensive information. Finally, the texture components of the two images are fused. The structurecomponents are added to obtain the final fused image. The experimental results show that the proposed methoddisplays very good noise robustness, and it also helps realize better fusion quality.
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Experimental study on the effect of EC-TMD on the vibration control of plant structure of PSPPs
Xin Feng,Tengfei Zhong,Yu Zhang,Jing Zhou 국제구조공학회 2022 Smart Structures and Systems, An International Jou Vol.29 No.3
A high-frequency vibration control method is proposed in this paper for Pumped Storage Power Plants (PSPPs) using Eddy Current Tuned Mass Damper (EC-TMD), based on which a new type of EC-TMD device is designed. The eddy current damper parameters are optimized by numerical simulation. On this basis, physical simulation model tests are conducted to compare and study the effect of structural performance with and without damping, different control strategies, and different arrangement positions of TMD. The test results show that EC-TMD can effectively reduce the control effect under high-frequency vibration of the plant structure, and after the additional damping device forms EC-TMD, the energy dissipation is further realized due to the intervention of eddy current damping, and the control effect is subsequently improved. The Multi-Tuned Mass Damper (MTMD) control strategy broadens the tuning band to improve the robustness of the system, and the vibration advantage is more obvious. Also, some suggestions are made for the placement of the dampers to promote their application.
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