Search

Your search keyword '"Zhang, Shumin"' showing total 2,125 results
Start Over Author "Zhang, Shumin"
2,125 results on '"Zhang, Shumin"'

4. A Dual Anion Chemistry‐Based Superionic Glass Enabling Long‐Cycling All‐Solid‐State Sodium‐Ion Batteries

Author

Lin, Xiaoting, Zhao, Yang, Wang, Changhong, Luo, Jing, Fu, Jiamin, Xiao, Biwei, Gao, Yingjie, Li, Weihan, Zhang, Shumin, Xu, Jiabin, Yang, Feipeng, Hao, Xiaoge, Duan, Hui, Sun, Yipeng, Guo, Jinghua, Huang, Yining, and Sun, Xueliang

Subjects
Chemical Sciences, Physical Chemistry, Affordable and Clean Energy, All-Solid-State Sodium-Ion Batteries, Glassy Na-Ion Solid-State Electrolytes, Oxychloride, Superionic Glass, Organic Chemistry, Chemical sciences
Abstract

Glassy Na-ion solid-state electrolytes (GNSSEs) are an important group of amorphous SSEs. However, the insufficient ionic conductivity of state-of-the-art GNSSEs at room temperature lessens their promise in the development of all-solid-state Na-ion batteries (ASSNIBs) with high energy density and improved safety. Here we report the discovery of a new sodium superionic glass, 0.5Na2 O2 -TaCl5 (NTOC), based on dual-anion sublattice of oxychlorides. The unique local structures with abundant bridging and non-bridging oxygen atoms contributes to a highly disordered Na-ion distribution as well as low Na+ migration barrier within NTOC, enabling an ultrahigh ionic conductivity of 4.62 mS cm-1 at 25 °C (more than 20 times higher than those of previously reported GNSSEs). Moreover, the excellent formability of glassy NTOC electrolyte and its high electrochemical oxidative stability ensure a favourable electrolyte-electrode interface, contributing to superior cycling stability of ASSNIBs for over 500 cycles at room temperature. The discovery of glassy NTOC electrolyte would reignite research enthusiasm in superionic glassy SSEs based on multi-anion chemistry.

Published
2024

8. A Method for Predicting the Aerodynamic Pass-By Noise Based on FW-H Equation Without Using Sliding Mesh or Overset Mesh

Author

Zhang, Shumin, Shi, Jiawei, Sheng, Xiaozhen, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Sheng, Xiaozhen, editor, Thompson, David, editor, Degrande, Geert, editor, Nielsen, Jens C. O., editor, Gautier, Pierre-Etienne, editor, Nagakura, Kiyoshi, editor, Kuijpers, Ard, editor, Nelson, James Tuman, editor, Towers, David A., editor, Anderson, David, editor, and Tielkes, Thorsten, editor

Published
2024
Full Text
View/download PDF

18. The structure fault tolerance of burnt pancake networks

Author

Ge Huifen, Ye Chengfu, and Zhang Shumin

Subjects
interconnection networks, h-structure connectivity, h-substructure connectivity, burnt pancake networks, 05c05, 05c25, 05c38, 05c40, Mathematics, QA1-939
Abstract

One of the symbolic parameters to measure the fault tolerance of a network is its connectivity. The HH-structure connectivity and HH-substructure connectivity extend the classical connectivity and are more practical. For a graph GG and its connected subgraph HH, the HH-structure connectivity κ(G;H)\kappa \left(G;\hspace{0.33em}H) (resp. HH-substructure connectivity κs(G;H){\kappa }^{s}\left(G;\hspace{0.33em}H)) of GG is the cardinality of a minimum subgraph set such that every element of the set is isomorphic to HH (resp. every element of the set is isomorphic to a connected subgraph of HH) in GG, whose vertices removal disconnects GG. In this article, we investigate the HH-structure connectivity and HH-substructure connectivity of the nn-dimensional burnt pancake network BPn{{\rm{BP}}}_{n} for each H∈{K1,K1,1,…,K1,n−1,P4,…,P7,C8}H\in \left\{{K}_{1},{K}_{1,1},\ldots ,{K}_{1,n-1},{P}_{4},\ldots ,{P}_{7},{C}_{8}\right\}.

Published
2023
Full Text
View/download PDF

38. Data Empowerment and System Remodeling Application

Author

Zhou, Lin, Li, Lei, Zhang, Shumin, Li, Yushun, Huang, Ronghuai, Series Editor, Kinshuk, Series Editor, Jemni, Mohamed, Series Editor, Chen, Nian-Shing, Series Editor, Spector, J. Michael, Series Editor, Zeng, Haijun, editor, Li, Zhisheng, editor, Guo, Jiong, editor, and Zhang, Zhuo, editor

Published
2023
Full Text
View/download PDF

44. Optimization Path of Innovation and Entrepreneurship Ability of College Students in the Context of High-Quality Development

Author

Zhang Shumin

Subjects
pls algorithm, sem model, agfi, correlation analysis, innovative entrepreneurship, 68m11, Mathematics, QA1-939
Abstract

Studying the influencing factors of college students’ innovation and entrepreneurship ability is crucial to optimizing the innovation and entrepreneurship of college students in the context of high-quality development. Based on this, this paper constructs an SEM structural equation model and improves the convergence of the PLS algorithm using the least squares solution and optimal iteration initial value for the PLS algorithm in the SEM model. Then, the correlation analysis is done between six influencing factors, such as national policy, birthplace, and entrepreneurial activities, and college students’ innovation and entrepreneurship ability, and finally, the hypothesis of the influence of innovation and entrepreneurship ability is verified by the SEM model test. The main results are as follows: this paper constructed a model of influence factors on college students’ innovation and entrepreneurship ability, with five levels and 18 factors, and ranked their importance. The SEM model’s fit coefficient of 0.927>0.9 is a sign of a high degree of fit in the structural equation model. The regression coefficients of the five dimensions calculated according to the SEM model are 0.781, 0.939, 0.243, 0.935, and 0.839. All five dimensions have a significant positive impact on innovation and entrepreneurship. This paper finds that there is a positive correlation between college students’ innovation and entrepreneurship ability and national innovation and entrepreneurship policy, place of origin, entrepreneurial activities, education, and internship experience, and constructs the optimization path of college students’ innovation and entrepreneurship ability.

Published
2024
Full Text
View/download PDF

45. The g-extra connectivity of the Mycielskian

Author

Li, He, Zhang, Shumin, and Ye, Chengfu

Subjects
Mathematics - Combinatorics
Abstract

The $g$-extra connectivity is an important parameter to measure the ability of tolerance and reliability of interconnection networks. Given a connected graph $G=(V,E)$ and a non-negative integer $g$, a subset $S\subseteq V$ is called a $g$-extra cut of $G$ if $G-S$ is disconnected and every component of $G-S$ has at least $g+1$ vertices. The cardinality of the minimum $g$-extra cut is defined as the $g$-extra connectivity of $G$, denoted by $\kappa_g(G)$. In a search for triangle-free graphs with arbitrarily large chromatic numbers, Mycielski developed a graph transformation that transforms a graph $G$ into a new graph $\mu(G)$, which is called the Mycielskian of $G$. This paper investigates the relationship of the g-extra connectivity of the Mycielskian $\mu(G)$ and the graph $G$, moreover, show that $\kappa_{2g+1}(\mu(G))=2\kappa_{g}(G)+1$ for $g\geq 1$ and $\kappa_{g}(G)\leq min\{g+1, \lfloor\frac{n}{2}\rfloor\}$.

Published
2020

Catalog

Books, media, physical & digital resources
See catalog results