Zobrazeno 1 - 10
of 1 381
pro vyhledávání: '"ZHANG Wenqian"'
Publikováno v:
Jichu yixue yu linchuang, Vol 44, Iss 11, Pp 1578-1583 (2024)
Objective To explore the clinical characteristics of renal paraganglioma(PGL). Methods The clinical data of a rare case of renal paraganglioma in a pediatric patient were reported and published cases of renal paragangliomas both domestically and inte
Externí odkaz:
https://doaj.org/article/75997c84e5b940b5bad0e915969792d2
Publikováno v:
电力工程技术, Vol 43, Iss 3, Pp 192-200 (2024)
Accurately predicting the concentration trend of dissolved gas in oil has a positive effect on the evaluation of transformer status and life assessment. In order to improve the accuracy of dissolved gas in oil prediction, a dissolved gas in oil predi
Externí odkaz:
https://doaj.org/article/9e1752c2d35b41129988efe12042cfdd
Insulation condition evaluation of oil-immersed transformer based on entropy weight hierarchy method
Publikováno v:
电力工程技术, Vol 42, Iss 4, Pp 223-230 (2023)
In order to evaluate the insulation condition of oil-immersed transformers effectively, a weight allocation method considering expert experience and degradation state is proposed in this paper. Firstly, a hierarchical structure for insulation conditi
Externí odkaz:
https://doaj.org/article/6c10f0be3ac745c98a579e9056862bbe
Publikováno v:
Applied Mathematics and Nonlinear Sciences, Vol 8, Iss 1, Pp 2893-2910 (2023)
Shunt capacitors can effectively improve the system voltage level and increase the economy of grid operation. However, under the effect of harmonics, the capacitor bank is prone to harmonic resonance, which causes overcurrent and overvoltage and thre
Externí odkaz:
https://doaj.org/article/79e7175afa45421cba58e9b0c614bede
Publikováno v:
Journal of Laboratory Medicine, Vol 46, Iss 2, Pp 125-132 (2022)
The aim of this study was to establish reference intervals (RIs) of homocysteine (Hcy) in healthy Chinese Han ethnic adults according to the Clinical and Laboratory Standard Institute (CLSI) CA28-A3.
Externí odkaz:
https://doaj.org/article/5a3f4e9254de4920b77becbabc0084ea
Publikováno v:
Guan'gai paishui xuebao, Vol 41, Iss 3, Pp 114-124 (2022)
【Objective】 Sedimentation and particle clogging is a phenomenon often occurring in irrigation pipe networks. The purpose of this paper is to investigate the feasibility and efficacy of magnetization on enhancing particle flocculation so as to all
Externí odkaz:
https://doaj.org/article/66fb3cf60cab42fa919eea1e4d1743f6
Autor:
Zhang, Wenqian
Let $G$ be a graph with $n$ vertices and $m$ edges. The spectral radius $\rho(G)$ of $G$ is the largest eigenvalue of the adjacency matrix of $G$. As is well known, $\rho(G)\geq\frac{2m}{n}$ with equality if and only if $G$ is regular. To bound $\rho
Externí odkaz:
http://arxiv.org/abs/2411.01207
Autor:
Zhang, Wenqian
Let $G$ be a connected $d$-regular graph of order $n$, where $d\geq3$. Let $\lambda_{2}(G)$ be the second largest eigenvalue of $G$. For even $n$, we show that $G$ contains $\left\lfloor\frac{2}{3}(d-\lambda_{2}(G))\right\rfloor$ edge-disjoint perfec
Externí odkaz:
http://arxiv.org/abs/2410.04413
Sign languages, used by around 70 million Deaf individuals globally, are visual languages that convey visual and contextual information. Current methods in vision-based sign language recognition (SLR) and translation (SLT) struggle with dialogue scen
Externí odkaz:
http://arxiv.org/abs/2409.01073
Autor:
Zhang, Wenqian
For a graph $G$, the spectral radius $\lambda_{1}(G)$ of $G$ is the largest eigenvalue of its adjacency matrix. An odd wheel $W_{2k+1}$ with $k\geq2$ is a graph obtained from a cycle of order $2k$ by adding a new vertex connecting to all the vertices
Externí odkaz:
http://arxiv.org/abs/2408.03595