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THE ORLICZ BRUNN-MINKOWSKI INEQUALITY FOR DUAL HARMONIC QUERMASSINTEGRALS

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Acta Mathematica Scientia 2019年第4期39卷 945-954页

作者： xiang wu Shougui LI School of Science Wuhan University of Science and Technology

Within the framework of Orlicz Brunn-Minkowski theory recently introduced by Lutwak, Yang, and Zhang [20, 21], Gardner, Hug, and Weil [5, 6] et al, the dual harmonic quermassintegrals of star bodies are studied, and a... 详细信息

关键词： Star body dual harmonic quermassintegrals Orlicz Brunn-Minkowski inequality

Defect engineering of vanadium-based electrode materials for zinc ion battery

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Chinese Chemical Letters 2023年第7期34卷 78-86页

作者： Ying Liu Yi Liu xiang wu School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China

With the quick development of sustainable energy sources, aqueous zinc-ion batteries(AZIBs) have become a highly potential energy storage technology. It is a crucial step to construct desired electrode materials for improving the total performance of AZIBs. In recent years, considerable efforts have focused on the modification of vanadium-based cathode materials. In this review, we summarized defect engineering strategies of vanadium-based cathodes, including oxygen defects, cation vacancies and heterogeneous doping. Then, we discussed the effect of various defects on the electrochemical performance of electrode materials. Finally, we proposed the future challenges and development directions of V-based cathode materials.

关键词： Aqueous zinc ion batteries Vanadium-based materials Cathodel energy storage devices Defect engineering

Research progress on transition metal oxide based electrode materials for asymmetric hybrid capacitors

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Chinese Chemical Letters 2020年第9期31卷 2177-2188页

作者： Meizhen Dai Depeng Zhao xiang wu School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China

In the past few years,the increasing energy consumption of traditional fossil fuels has posed a huge threat to human *** is very imperious to develop the sustainable and renewable energy storage and conversion devices with low cost and environment friendly *** supercapacitors are eme rging as one of the promising energy devices with high power density,fast charge-discharge process and excellent cycle ***,morphology and structure of the electrode materials exert serious effect on their electrochemical *** this review,we summarized recent progresses in transition metal oxide based electrode materials for *** synthesis routes and electrochemical performances of electrode materials and storage mechanisms of supercapacitor devices have been presented in *** future developing trends of supercapacitor based on metal oxide electrode materials are also proposed.

关键词： Supercapacitors Transition metal oxide Electrochemical performance Energy density Power density Storage mechanism

Metal-organic framework derived porous cathode materials for hybrid zinc ion capacitor

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Rare Metals 2022年第9期41卷 2985-2991页

作者： Ying Liu Ahmad Umar xiang wu School of Materials Science and Engineering Shenyang University of TechnologyShenyang110870China Department of Chemistry Faculty of Science and Arts and Promising Centre for Sensors and Electronic Devices(PCSED)Kingdom of Saudi ArabiaNajran UniversityNajran11001Saudi Arabia

Aqueous zinc ion hybrid capacitor(AZHC)is an emerging energy storage *** combines the merits of secondary battery and ***,the low energy density and cycling capability need to be further ***,it is crucial to construct a viable electrode material for improving the electrochemical performance of *** this work,we prepare mesoporous VO/C microcubes by a high-temperature carbonization strategy.

关键词： battery cycling combine

PPy decoratedα-Fe_(2)O_(3) nanosheets as flexible supercapacitor electrodes

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Rare Metals 2022年第4期41卷 1195-1201页

作者： Qing Xia Tong Xia xiang wu School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071China

In recent years,α-Fe_(2)O_(3)electrode material is considered to be one of the most potential anode materials for asym-metric supercapacitors(ASCs).But the poor electrical conductivity restricts its wide *** is an effective solution to improve electrical conductivity by compositing conductive polymer ***,we prepare severalα-Fe_(2)O_(3)@PPy electrode materials on nickel foam by a facile solvothermal method and a subsequent electro-chemical deposition *** as-obtainedα-Fe_(2)O_(3)@PPy-70 product is utilized as negative material for supercapacitors,which delivers a speciflc capacity of 1050 mF·cm^(-2)at 1 mA·cm^(-2).In addition,the assembled asymmetric capacitor shows an energy density of 0.178 mWh·cm^(-3)at 7.09 mW·cm^(-3),and the capacity retention rate after cycling is 87.5%.

关键词： supercapacitor electrode conductivity

Controllability and Its Applications to Biological Networks

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Journal of Computer Science & Technology 2019年第1期34卷 16-34页

作者： Lin wu Min Li Jian-Xin Wang Fang-xiang wu Division of Biomedical Engineering University of SaskatchewanSaskatoonSK STN 5A9Canada School of Information Science and Engineering Central South UniversityChangsha 410083China Department of Mechanical Engineering University of SaskatchewanSaskatoonSK STN 5A9Canada

Biological elements usually exert their functions through interactions with others to form various types of biological *** ability of controlling the dynamics of biological networks is of enormous benefits to pharmaceutical and medical industry as well as scientific *** there are many mathematical methods for steering dynamic systems towards desired states,the methods are usually not feasible for applying to complex biological *** difficulties come from the lack of accurate model that can capture the dynamics of interactions between biological elements and the fact that many mathematical methods are computationally intractable for large-scale ***,a concept in control theory --controllability,has been applied to investigate the dynamics of complex *** this article, recent advances on the controllability of complex networks and applications to biological networks are *** dynamic models is the prior concern for analyzing dynamics of biological ***,we introduce a widely used dynamic model for investigating controllability of complex *** recent studies of theorems and algorithms for having complex biological networks controllable in general or specific application scenarios are ***,applications to real biological networks manifest that investigating the controllability of biological networks can shed lights on many critical physiological or medical problems,such as revealing biological mechanisms and identifying drug targets,from a systematic perspective.

关键词： biological network network controllability steering node

Detecting protein complexes from DPINs by density based clustering with Pigeon-Inspired Optimization Algorithm

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Science China(Information Sciences) 2016年第7期59卷 30-43页

作者： Xiujuan LEI Yulian DING Fang-xiang wu School of Computer Science Shaanxi Normal University School of Mathematical Sciences Nankai University Division of Biomedical Engineering University of Saskatchewan

Detecting protein complexes is crucial to understand principles of cellular organization. Plenty evidences have indicated that sub-graphs with high density in protein-protein interaction(PPI) network, especially dynamic PPI network(DPIN), usually correspond to protein complexes. As a well-known density-based clustering algorithm, Density-Based Spatial Clustering of Applications with Noise(DBSCAN) has been used in many areas due to its simplicity and the ability to detect clusters of different sizes and shapes. However, one of its limitations is that the performance of DBSCAN depends on two specified parameters ε and Min Pts, where εrepresents the maximum radius of a neighborhood from an observing point while Min Pts means the minimum number of data points contained in such a neighborhood. In this article, we develop a new method named as P-DBSCAN to detect protein complexes in DPIN by using Pigeon-Inspired Optimization(PIO) Algorithm to optimize the parameters ε and Min Pts in DBSCAN. The experiments on DIP and MIPS datasets show that P-DBSCAN outperforms the state-of-the-art methods for protein complex detection in terms of several criteria such as precision, recall and f-measure.

关键词： dynamic protein-protein interaction network(DPIN) pigeon-inspired optimization(PIO) protein complex density based clustering gene expression

Systematic review of Chinese herbal medicine for functional constipation

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World Journal of Gastroenterology 2009年第39期15卷 4886-4895页

作者： Chung-Wah Cheng Zhao-xiang Bian Tai-xiang wu School of Chinese Medicine Hong Kong Baptist University Hong Kong China Department of ClinicalEpidemiology Chinese Evidence-Based Medicine Centre West China Hospital Sichuan University Chengdu 610041 Sichuan Province China

Constipation is a common gastrointestinal complaint in clinical practice, affecting an estimated 27% of the population. Many patients are disappointed by current conventional treatments and, therefore, seek help from complementary and alternative medicine （CAM）. Traditional Chinese medicine, is the most important part of CAM and has been practiced for treating diseases and promoting the health of humans for thousands of years, and has become a popular alternative choice. Although there are many Chinese herbal medicine （CHM interventions available, and some have been verified b＇ clinical trials, their efficacy and safety are still questioned by both patients and health care providers worldwide. The purposes of this review are, first, to appraise the qualities of individual study designs in the new Cochrane approach. Second, the benefits of individual CHM interventions or individual types of CHM intervention for the treatment of functional constipation are analyzed. Finally, valid and comprehensive conclusions are drawn, if applicable, in order to make clinical recommendations.

关键词： Chinese herbal medicine Functional constipation Systematic review

Dynamic optimization of 1,3-propanediol fermentation process:A switched dynamical system approach

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Chinese Journal of Chemical Engineering 2022年第4期35卷 192-204页

作者： xiang wu Yuzhou Hou Kanjian Zhang Ming Cheng School of Mathematical Sciences Guizhou Normal UniversityGuiyang 550001China School of Life Sciences Guizhou Normal UniversityGuiyang 550001China School of Electrical Engineering Southeast UniversityNanjing 210096China School of Automation Southeast UniversityNanjing 210096China Key Laboratory of Measurement and Control of CSE Ministry of EducationSoutheast UniversityNanjing 210096China

This paper considers a dynamic optimization problem(DOP)of 1,3-propanediol fermentation process(1,3-PFP).Our main contributions are as ***,the DOP of 1,3-PFP is modeled as an optimal control problem of switched dynamical *** the existing switched dynamical system optimal control problem,the state-dependent switching method is applied to design the switching ***,in order to obtain the numerical solution,by introducing a discrete-valued function and using a relaxation technique,this problem is transformed into a nonlinear parameter optimization problem(NPOP).Although the gradient-based algorithm is very efficient for solving NPOPs,the existing algorithm is always trapped in a local minimum for such problems with multiple local ***,in order to overcome this challenge,a gradient-based random search algorithm(GRSA)is proposed based on an improved gradient-based algorithm(IGA)and a novel random search algorithm(NRSA),which cannot usually be trapped in a local *** convergence results are also established,and show that the GRSA is globally ***,a DOP of 1,3-PFP is provided to illustrate the effectiveness of the GRSA proposed by this paper.

关键词： Process control Optimization Mathematical modeling Switched system State-dependent switching Global optimization