Search

Your search keyword '"Wang, Jinbiao"' showing total 152 results
Start Over Author "Wang, Jinbiao"
152 results on '"Wang, Jinbiao"'

1. Lax formulation of 3--component KP hierarchy by Shiota construction

Author

Cui, Tongtong, Wang, Jinbiao, Cao, Wenqi, and Cheng, Jipeng

Subjects
Nonlinear Sciences - Exactly Solvable and Integrable Systems, Mathematical Physics, 35Q53, 37K10, 35Q51
Abstract

It is quite basic in integrable systems to deriving Lax equations from bilinear equations. For multi--component KP theory, corresponding Lax structures are mainly constructed by matrix pseudo-differential operators for fixed discrete variables, or by matrix difference operators for even-component cases. Here we use Shiota method to construct Lax structure of 3-component KP hierarchy and its reduction by introducing two shift operators $\Lambda_1$ and $\Lambda_2$, where relations among different discrete variables can be easily found. We believe the results here are quite typical for general multi-component KP theory, which may be helpful for general cases., Comment: 20 pages

Published
2024

2. Generalized Bigraded Toda Hierarchy

Author

Liu, Yue, Yan, Xingjie, Wang, Jinbiao, and Cheng, Jipeng

Subjects
Nonlinear Sciences - Exactly Solvable and Integrable Systems, Mathematical Physics, 35Q53, 37K10, 35Q51
Abstract

Bigraded Toda hierarchy $L_1^M(n)=L_2^N(n)$ is generalized to $L_1^M(n)=L_2^{N}(n)+\sum_{j\in \mathbb Z}\sum_{i=1}^{m}q^{(i)}_n\Lambda^jr^{(i)}_{n+1}$, which is the analogue of the famous constrained KP hierarchy $L^{k}= (L^{k})_{\geq0}+\sum_{i=1}^{m}q_{i}\partial^{-1}r_i$. It is known that different bosonizations of fermionic KP hierarchy will give rise to different kinds of integrable hierarchies. Starting from the fermionic form of constrained KP hierarchy, bilinear equation of this generalized bigraded Toda hierarchy (GBTH) are derived by using 2--component boson--fermion correspondence. Next based upon this, the Lax structure of GBTH is obtained. Conversely, we also derive bilinear equation of GBTH from the corresponding Lax structure., Comment: 16 pages

Published
2024

24. Spatial-Frequency Fusion for Bayer Demosaicking

Author

Bai, Chenyan, Li, Jia, and Wang, Jinbiao

Abstract

Deep learning-based demosaicking for the Bayer color filter array (CFA) has great advances. However, most existing demosaicking methods only work in the spatial domain and rarely explore the spectral characteristic of Bayer CFA. In this letter, we first attempt to address Bayer demosaicking in both spatial and frequency domains and propose a spatial-frequency fusion network. It consists of three key modules: spatial-domain branch, frequency-domain branch, and dual-domain fusion. Spatial-domain branch employs the standard convolution to extract local features in the spatial domain, while frequency-domain branch adopts frequency selection to maintain CFA's periodicity and achieve the image-wide receptive field for obtaining global features. Dual-domain fusion integrates the complementary representation of the two types of features. Extensive experiments validate the effectiveness of the proposed network.

Published
2024
Full Text
View/download PDF

38. Failure Behavior of Hydrogenated and Hydrogen Free Diamond Like Carbon (DLC) Films in Water Environment

Author

Su Yongyao, Zhang Tengfei, Wang Jinbiao, Xiaodong Hou, Sanjooram Paddea, Xu Zhaoying, and Weijiu Huang

Subjects
Materials science, Hydrogen, Diamond-like carbon, Mechanical Engineering, Materials Science (miscellaneous), Delamination, Metals and Alloys, chemistry.chemical_element, Tribology, Corrosion, chemistry, Mechanics of Materials, Plasma-enhanced chemical vapor deposition, Materials Chemistry, Water environment, Surface modification, Composite material
Abstract

Diamond like carbon (DLC) film exhibits typical properties such as high hardness and low coefficient of friction, often used to improve fiction and wear performance. In the application of surface modification of medical implants, it is of great interests to investigate the failure mechanism of DLC in water environment, in order to avoid the early-stage delamination of DLC film in vivo and promote the application of DLC in implanted medical devices. In this work, four kinds of DLC films were prepared by electron cyclotron resonance plasma enhanced chemical vapor deposition, plasma immersion ion deposition and filtered cathode vacuum arc methods. The wear and failure behavior of DLC films in air and water environment were investigated by ball-on-disc tribological experiments. The results show the friction coefficient of DLC film with high hydrophilic is sensitive to the water environment. Both the interface corrosion and mechanical property affect the adhesion failure of DLC film in water. Hydrogenated DLC film is vulnerable to water environment because the hydrogenous interface is susceptible to corrosion, however, the low hardness and low modulus can reduce the contact stress, which is help to achieve a longer service life of hydrogenated DLC film in water. Hydrogen free DLC film is less sensitive to water environment compared with the hydrogenated one.

Published
2021

39. A feature-based method for tire pattern similarity detection

Author

Li Hongling, Dong Yude, Ding Heng, Wang tao, and Wang Jinbiao

Subjects
Mechanical Engineering, Aerospace Engineering
Abstract

Innovation and inheritability are the key requirements of tire pattern design. This article call attention to the similarity detection of tire patterns. A similarity detection method based on tire pattern features is proposed. Through in-depth analysis of the pattern structure, the tire pattern features are separated into shape and texture features. Shape features describe the arrangement rules between tire grooves and pattern blocks. On the other hand, texture features define each pattern block’s surface characteristics, groove depth, groove width, and other characteristics. The tire pattern raw data is firstly analyzed through digital image processing technology. Then, shape and texture features were recognized and separated using edge extraction and co-occurrence matrix methods, respectively. The tire pattern photos are then realized, measured, and detected for similarity following the rules of similarity theory. Experiments were designed to fit the framework of the given detection method. The test results prove that the proposed method can detect tire pattern similarity quickly and conveniently.

Published
2022

41. Design and implementation of an extensive-process method for improving the processing efficiency and capacity of the production logistics system

Author

Ding, Heng, Dong, Yude, Yuan, Zhonghang, Wang, Jinbiao, Chen, Yuanchang, Huang, Zhihao, Gao, Haoyu, and Huang, Suyun

Abstract

ABSTRACTAiming at the low processing efficiency, low daily output, and long processing time of production logistics systems in small and medium-sized automobile enterprises, this study designed a novel production logistics system based on an extensive process. After improving the processing procedures, an extensive process method is adopted to classify product materials and number the process flow. Next, an automatic identification method for single and multi-process process changes is designed, and real-time control and feedback of the production process are realized. Finally, the design and implementation of the system structure and function are completed. The problem of chaotic and disorderly production in the workshop is solved, and the processing efficiency and daily output are improved. The efficiencies of the SVW Limit Arm (SVW) and FAW Limit Arm (FAW) increased by 37.33% and 39.85%, respectively. The daily output of the two products increased by 55.65% and 32.04%.

Published
2023
Full Text
View/download PDF

50. Interaction between Water Wave and Geometrical Structures of Floating Triboelectric Nanogenerators.

Author

Xu, Shuxing, Liu, Guanlin, Wang, Jinbiao, Wen, Honggui, Cao, Sheng, Yao, Huilu, Wan, Lingyu, and Wang, Zhong Lin

Subjects
WATER waves, OCEAN waves, WAVE energy, ENERGY harvesting, DISTRIBUTION (Probability theory)
Abstract

Although triboelectric nanogenerators (TENGs) are highly efficient and adaptable in harvesting ocean wave energy, the dynamics of floating TENGs in underwater wave stimulations have so far rarely been studied. Herein, the interactions between centimeter‐scaled floating structures and water waves are experimentally revealed. By integrating inertial measurement units into the shells of various floating TENG structures, the primary acceleration data associated with different parameters are obtained. Based on the data of 63 literature reported floating TENGs, a series of experimental parameters are elaborately probed, including shell shape, shell size, weight, barycenter, wave strength/frequency, and wave‐producing methods. Through dynamic calculations, each can offer the kernel data of acceleration and frequency distribution curves, revealing several regularities in water–structure interactions associated with TENGs. These calculations could serve as guidance for the design of the future floating TENGs in blue energy harvesting. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results