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129 results on '"JIN Ying-ying"'

3. On the continuity of the inverse in (strongly) paratopological gyrogroups

Author

Jin, Ying-Ying and Xie, Li-Hong

Subjects
Mathematics - General Topology
Abstract

In this paper, we consider the continuity of the inverse in (strongly) paratopological gyrogroups. The conclusions are established as follows: (1) A compact Hausdorff paratopological gyrogroup $G$ is a topological gyrogroup. (2) A Hausdorff locally compact strongly paratopological gyrogroup is a topological gyrogroup. (3) If $G$ is locally compact strongly paratopological gyrocommutative gyrogroup (without any separation restrictions), then $G$ is a strongly topological gyrogroup. (4) Every regular feebly compact strongly paratopological gyrogroup is a topological gyrogroup. (5) If a Hausdorff strongly paratopological gyrogroup $G$ is countablly compact and topologically periodic, then $G$ is a strongly topological gyrogroup.

Published
2023

4. Quotients with respect to strongly $L$-subgyrogroups

Author

Jin, Ying-Ying and Xie, Li-Hong

Subjects
Mathematics - General Topology, 54H11, 22A30, 22A22, 20N05, 54H99
Abstract

A topological gyrogroup is a gyrogroup endowed with a compatible topology such that the multiplication is jointly continuous and the inverse is continuous. In this paper, we study the quotient gyrogroups in topological gyrogroups with respect to strongly $L$-subgyrogroups, and prove that let $(G, \tau,\oplus)$ be a topological gyrogroup and $H$ a closed strongly $L$-subgyrogroup of $G$, then the natural homomorphism $\pi$ from a topological gyrogroup $G$ to its quotient topology on $G/H$ is an open and continuous mapping, and $G/H$ is a homogeneous $T_1$-space. We also establish that for a locally compact strongly $L$-subgyrogroup $H$ of a topological gyrogroup $G$, the natural quotient mapping $\pi$ of $G$ onto the quotient space $G/H$ is a locally perfect mapping. This leads us to some interesting results on how properties of $G$ depend on the properties of $G/H$. Some classical results in topological groups are generalized., Comment: 10. arXiv admin note: substantial text overlap with arXiv:2003.08843 by other authors; text overlap with arXiv:2204.02079 by other authors

Published
2022

6. Locally upper bounded poset-valued maps and stratifiable spaces

Author

Jin, Ying-Ying, Xie, Li-Hong, and Yang, Han-Biao

Subjects
Mathematics - General Topology, 54D20
Abstract

In this paper, we characterize stratifiable (or semi-stratifiable) spaces, and monotonically countably paracompact (or monotonically countably metacompact) spaces by expansions of locally upper bounded semi-continuous poset-valued maps. These extend earlier results for real-valued Locally bounded functions., Comment: 15 pages

Published
2020

14. Digital Transformation and Corporate Sustainability: The Moderating Effect of Ambidextrous Innovation

Author

Jin, Ying Ying and Shanyue

Subjects
digital transformation, corporate sustainability, technology-based, market-based, ambidextrous innovation
Abstract

Digital transformation (DT) has become the new normal. Research has focused on the effect of the overall level of DT in enterprises. However, the effects of DT across different dimensions remain unclear. This study divided DT into technology- (TDT) and market-based digital transformation (MDT). It examined the effects on corporate sustainability and how ambidextrous innovation affects the relationship between both types and corporate sustainability. This study used the two-way fixed-effects model and the two-stage least squares method to study A-share listed companies in China from 2013 to 2021. The results showed that both TDT and MDT had positive effects on corporate sustainability. The higher the levels of exploratory and exploitative innovation in enterprises, the stronger the contribution of both types of DT to corporate sustainability. The findings validate the research on DT in line with the resource-based view, enrich the literature on and expand the boundary conditions of DT applications across various dimensions, and offer useful insights for practitioners.

Published
2023
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20. Concurrent chemoradiotherapy using gemcitabine and nedaplatin in recurrent or locally advanced head and neck squamous cell carcinoma

Author

Huo, Rui-Xue, primary, Jin, Ying-Ying, additional, Zhuo, Yong-Xue, additional, Ji, Xiao-Tong, additional, Cui, Yu, additional, Wu, Xiao-Jing, additional, Wang, Yi-Jia, additional, Zhang, Long, additional, Zhang, Wen-Hua, additional, Cai, Yu-Mei, additional, Zheng, Cheng-Cheng, additional, Cui, Rui-Xue, additional, Wang, Qian-Ye, additional, Sun, Zhen, additional, and Wang, Feng-Wei, additional

Published
2022
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31. Automatic detection of feather defects using Lie group and fuzzy Fisher criterion for shuttlecock production

Author

Ken Cai, Huazhou Chen, Hongtao Wang, Hongwei Yue, and Jin Ying-Ying

Subjects
0209 industrial biotechnology, Fuzzy set, Aerospace Engineering, 02 engineering and technology, 01 natural sciences, Fuzzy logic, 020901 industrial engineering & automation, Physics::Plasma Physics, 0103 physical sciences, 010301 acoustics, Civil and Structural Engineering, Mathematics, Covariance matrix, business.industry, Mechanical Engineering, Feature recognition, Lie group, Pattern recognition, Riemannian manifold, Linear discriminant analysis, Computer Science Applications, Control and Systems Engineering, Signal Processing, Metric (mathematics), Artificial intelligence, business
Abstract

Feathers are the main raw material of shuttlecock. The quality of feather is a key factor in shuttlecock production and detection of feather defects is a challenging problem. In this paper, an automatic detection for feather defects was proposed that relies on fuzzy, Lie Group and machine learning theory. First, the feather images were enhanced using fuzzy set. Then, a covariance matrix was constructed as features of the defect region and Riemannian metric was assigned on a Riemannian manifold with a Lie group structure. The mean covariance matrix with nonsymmetric structure was proved to have a Lie group structure. To establish the automatic detection of feather defects, this study introduced Riemann mean and membership degree into the machine learning method of Fisher linear discriminant to implement feature recognition. Experiments were performed to demonstrate the feasibility of features of defect region as a differential manifold.

Published
2020

45. Analysis of the Learning Mode of the Elaborate Resource Sharing Course

Author

Jin Ying-Ying, Haoran Huang, Hongwei Yue, and Ken Cai

Subjects
Sustainable development, 0209 industrial biotechnology, Teaching technology, Knowledge management, Computer science, business.industry, General Engineering, 02 engineering and technology, Intellectual property, Open educational resources, Education, Shared resource, 020901 industrial engineering & automation, Mode (computer interface), ComputingMilieux_COMPUTERSANDEDUCATION, 0202 electrical engineering, electronic engineering, information engineering, Virtual learning environment, 020201 artificial intelligence & image processing, Informatization, business
Abstract

Educational informatization and networking have become inevitable because of the major changes in the course content system and teaching modes. Examining the status of elaborate resource sharing course (ERSC) construction and analyzing the sharing and application of educational resources are vital. Through the comparative analysis of foreign open classes and domestic resource sharing courses, this paper puts forward recommendations for the sharing of resources and communication between teachers and students in the construction of an ERSC. Positive interactions between teachers and students can be promoted in network-based teaching using the WeChat public platform to build a virtual learning environment. Then, this paper analyzes the effect of the intellectual property right protection of network teaching on open educational resources and proposes countermeasures. Results show that the WeChat teaching technology and the cited standards for the public educational resources can improve learning efficiency. These conclusions can also serve as reference in promoting the sustainable development of ERSC.

Published
2016

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