Preoperative albumin-to-globulin ratio as a significant prognostic indicator in urologic cancers: a meta-analysis Yi Zhang,1 Lijuan Wang,2 Shibu Lin,3 Rong Wang1 1Department of General Surgery, The
Prognostic value of aspartate aminotransferase to platelet ratio index as a noninvasive biomarker in patients with hepatocellular carcinoma: a metaanalysis Yi Zhang, Xu Zhang Department of General ... Yi Zhang, Xu Zhang Department of General Surgery, the First People’s Hospital of Neijiang, Neijiang, Sichuan Province, China Background: The aspartate aminotransferase-to-platelet ratio index (APRI
PATH PRODUCT AND INVERSE M-MATRICES∗ YAN ZHU† , CHENG-YI ZHANG‡ , AND JUN LIU§ AMS subject classifications. 15A48, 15A57. 1. Introduction. An n × n matrix A = (aij ) is an M -matrix if aij ≤ 0 (i 6= j ... , Cheng-Yi Zhang, and Jun Liu Corollary 2.11. Let A = (aij ) be an n × n nonnegative matrix with positive diagonal entries and let D and E be positive diagonal matrices such that DE = |n − 3 − ε|[diag(A
By Cheng-Yi Zhang, Shuanghua Luo, Fengmin Xu, et al., Published on 01/01/09 ... B11 B12 · · · B1s = 0... B...22 ·. ·. .· B...2s , 0 0 · · · Bss 812 and correspondingly, Cheng-yi Zhang, Shuanghua Luo, Fengmin Xu, and Chengxian Xu A21 P [A(α′)]P T = ... , and
://repository.uwyo.edu/ela Recommended Citation - http://math.technion.ac.il/iic/ela CHENG-YI ZHANG† , SHUANGHUA LUO‡ , JICHENG LI§ , AND FENGMIN XU¶ AMS subject classifications. 65F10, 65N22, 15A48. 1. Introduction
. Assume that A(γ) is the largest (generalized) diagonally equipotent principal submatrix of A(α) for γ = α − γ′ ⊆ α. Thus, Theorem 4.4 shows that 812 Cheng-Yi Zhang, Yan Zhu, Shuanghua Luo, and Jicheng Li ... . Acknowledgment. The authors would like to thank the anonymous referees for their valuable comments and suggestions, which actually stimulated this work. Cheng-Yi Zhang, Yan Zhu, Shuanghua Luo, and Jicheng Li [1
/iic/ela THE EIGENVALUE DISTRIBUTION OF BLOCK DIAGONALLY DOMINANT MATRICES AND BLOCK H −MATRICES∗ CHENG-YI ZHANG† , SHUANGHUA LUO‡ , AIQUN HUANG§ , AND JUNXIANG LU¶ AMS subject classifications. 15A15 ... . Recently, Cheng-yi Zhang et al. ([ 21 ], [ 22 ]) generalized Tong’s results in [ 15 ] to nonsingular diagonally dominant matrices with complex diagonal entries and established the following conclusion
In this paper, absolute stability of nonlinear systems with time delays is investigated. Sufficient conditions on absolute stability are derived by using the comparison principle and differential inequalities. These conditions are simple and easy to check. In addition, exponential stability conditions for some special cases of nonlinear delay systems are discussed. Applications...
−MATRICES∗ CHENG-YI ZHANG† , DAN YE‡ , CONG-LEI ZHONG§ , AND SHUANGHUA LUO¶ AMS subject classifications. 15A15, 15F10. 1. Introduction. In this paper, we consider the solution methods for the system of n
& engineering and manufacturing; tribology and mechanical engineering; chemistry, electrochemistry and chemical engineering. Yi ZHANG. He received his BEng degree in polymer materials from East China University
Yi Zhang; firstname.lastname@example.org Received 13 March 2018; Accepted 6 June 2018; Published 3 July 2018 Academic Editor: Friedhelm Schwenker Copyright © 2018 Chunhui Bao et al. This is an open access
Xiuxia Zhang, Earthquake Administration of Jiangsu Province, Nanjing, 210014, CN X close Yi Zhang China Earthquake Networks Center, Beijing, 100045, CN X close Abstract Data
, College of Life Sciences, Zhejiang University, Hangzhou, 310058, P. R. ChinaZhi-Yi Zhang & Sheng-Guo FangChina Research and Conservation Center for the Giant Panda, Wolong, 623000, P. R. ChinaHe-Min Zhang ... & De-Sheng LiEmeishan Biological Resources Research Station, Sichuan Provincial Academy of Natural Resources Sciences, Chengdu, 610015, P. R. ChinaTie-Yi Xiong AuthorsSearch for Zhi-Yi Zhang in:Nature
We consider a piecewise deterministic Markov decision process, where the expected exponential utility of total (nonnegative) cost is to be minimized. The cost rate, transition rate and post-jump distributions are under control. The state space is Borel, and the transition and cost rates are locally integrable along the drift. Under natural conditions, we establish the optimality...
Shanghai Materials Genome Institute, Shanghai University, 99 Shangda Road, Shanghai, 200444, ChinaTong-Yi Zhang AuthorsSearch for Jie Wang in:Nature Research journals • PubMed • Google Scholar Search for ... Tong-Yi Zhang in:Nature Research journals • PubMed • Google Scholar Contributions J.W. and Y.J.Z. conceived and designed the study. Y.J.Z. performed the calculations and interpreted the data. M.P.K.S
A singular biological economic model which considers a prey-predator system with time delay and stage structure is proposed in this paper. The local stability at the equilibrium point and the dynamic behavior of the model are studied. Local stability analysis of the model without time delay reveals that there is a phenomenon of singularity-induced bifurcation due to the economic...
University, Zhengzhou, Henan 450052, China Correspondence should be addressed to Yi Zhang; nc.ude.uzz@gnahziy and Yang Fu; nc.ude.uzz@gnayuf Received 28 August 2017; Accepted 7 February 2018; Published 17 ... ; Ge Yang designed the three figures; and Yang Fu and Yi Zhang participated extensively in revising and determining the content contained in the review. Shangjun Sun and He Hao contributed equally to
, USAKunhua Li & Steven D. Bruner AuthorsSearch for Yi Zhang in:Nature Research journals • PubMed • Google Scholar Search for Kunhua Li in:Nature Research journals • PubMed • Google Scholar Search for Guang
In order to solve difficulty in designing nonlinear slow-wave structure (SWS) of the variable inclination continuous transverse stub (VICTS) antenna, we combine the study of the semiopen rectangular grating SWS in the PPW with equivalent circuit theory of leaky-wave antenna to propose a theoretical model for SWS of VICTS element. The computations that the propagation...