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Your search keyword '"Xiang, Shu-wen"' showing total 23 results
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23 results on '"Xiang, Shu-wen"'

14. Minimal essential sets and essential components of the equilibria of production economies

Author

Xiang Shu-wen

Subjects
Equilibrium point, Set (abstract data type), Mathematical optimization, Economy, Mechanics of Materials, Component (thermodynamics), Applied Mathematics, Mechanical Engineering, Existential quantification, Stability (learning theory), Production (economics), Mathematical economics, Mathematics
Abstract

The purpose of this paper is to give a further study on the stability of production economies. The new results were given by considering the “set-valued” stability of equilibria. It is proved that there exists at least one minimal essential set of equilibrium points of the economy and every minimal essential set is connected. Based on these results, it is easy to prove that there is at least one essential component of the set of equilibrium points.

Published
2000

15. On the existence and uniqueness of solutions for a class of variational inequalities with applications to the signorini problem in mechanics

Author

Xiang Shu-wen and Zhang Shi-sheng

Subjects
Class (set theory), Partial differential equation, Mechanics of Materials, Applied Mathematics, Mechanical Engineering, Variational inequality, Uniqueness, Mechanics, Signorini problem, Mathematics
Abstract

In this paper, we introduce a new unified and general class of variational inequalities, and show some existence and uniqueness results of solutions for this kind of variational inequalities. As an application, we utilize the results presented in this paper to study the Signorini problem in mechanics.

Published
1991

19. Polymorphism and chromosomal mapping of the mouse gene for B-cell activating factor belonging to the tumor necrosis factor family (Baff) and association with the autoimmune phenotype

Author

Na Li, Toshikazu Shirai, Masaaki Abe, Sachiko Hirose, Yan Xiu, Mareki Ohtsuji, Xiang Shu Wen, and Yi Jiang

Subjects
Male, CD30, Genotype, Immunology, Autoimmunity, Biology, medicine.disease_cause, Mice, Species Specificity, B-Cell Activating Factor, Genetics, medicine, Animals, Humans, Lupus Erythematosus, Systemic, B-cell activating factor, Gene, Crosses, Genetic, Mice, Inbred BALB C, Polymorphism, Genetic, Mice, Inbred NZB, Tumor Necrosis Factor-alpha, Chromosome Mapping, Membrane Proteins, Phenotype, Molecular biology, Mice, Inbred C57BL, Membrane protein, Mice, Inbred DBA, Tumor necrosis factor alpha, Female
Published
2001

22. Solving generalized Nash equilibrium problem based on immune particle swarm algorithm.

Author

JIA Wen-sheng, XIANG Shu-wen, YANG Jian-feng, and HE Ji-hao

Subjects
*PARTICLE swarm optimization, *NASH equilibrium, *NONLINEAR equations, *COMPUTER simulation, *MATHEMATICAL optimization
Abstract

This paper presented an immune particle swarm algorithm for solving generalized Nash equilibrium problem. First it reformulated the generalized Nash equilibrium problem as the nonlinear equations problem by the nonlinear complementarity problem. Then it designed an immune particle swarm algorithm by involving the immune memory function and the antibody concentration inhibition mechanism into the original swarm algorithm. Finally the computer simulation results demonstrate that the proposed algorithm is effective and it not only keeps the variety of the original swarm, but also improves the abilities of seeking the global optimization result and the evolution speed of convergence. [ABSTRACT FROM AUTHOR]

Published
2013
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23. [Role of fecal calprotectin in the diagnosis of neonatal necrotizing enterocolitis: a Meta analysis].

Author

Xie YQ, Ren CJ, Wang X, Xiang SW, Wang XX, and Hao L

Subjects
China, Feces, Humans, Infant, Newborn, ROC Curve, Sensitivity and Specificity, Enterocolitis, Necrotizing diagnosis, Leukocyte L1 Antigen Complex
Abstract

Objective: To study the value of fecal calprotectin (FC) in the diagnosis of neonatal necrotizing enterocolitis (NEC) through a Meta analysis., Methods: Web of Science, Cochrane Library, PubMed, Embase, China National Knowledge Infrastructure, Weipu Periodical Database, Wanfang Data, Chinese Biomedical Literature Database were searched for related studies published up to May 2020, with manual search as supplementation. The QUADAS criteria were used to evaluate the quality of the articles included. Meta-DiSc 1.4 and Stata 15.0 software were used to perform the Meta analysis, including the evaluation of specificity, sensitivity, likelihood ratio, and diagnostic odds ratio. The sensitivity analysis and heterogeneity testing were performed, and the summary receiver operating characteristic (SROC) curve and Fagan diagram were plotted., Results: A total of 15 articles were enrolled, involving 1 719 neonates. Among these articles, 4 had low quality, 2 had high quality, and the rest had medium quality. There was high heterogeneity between studies, and there was no threshold effect or publication bias. The random effects model analysis showed that FC had a pooled specificity of 0.80 (95% CI :0.78-0.82) and a sensitivity of 0.86 (95% CI :0.83-0.89) in the diagnosis of NEC, with a negative likelihood ratio of 0.19 (95% CI :0.14-0.26), a positive likelihood ratio of 4.71 (95% CI :3.57-6.23), and a diagnostic odds ratio of 29.56 (95% CI :17.98-48.61). The area under the SROC curve was 0.9131 and the Q * index was 0.8456. The Fagan diagram showed that the post-test probability of NEC indicated by negative FC was 13%, while that indicated by positive FC was 86%. The Meta regression analysis showed that the heterogeneity came from other non-threshold factors., Conclusions: FC has high potential and efficiency in the early diagnosis of NEC. FC measurement can be used for the diagnosis of NEC, but it should be combined with clinical manifestations and other related laboratory examinations.

Published
2021

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