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Stochastic H_2/H_∞ Control for Poisson Jump-Diffusion Systems

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Chinese Annals of Mathematics,Series B 2016年第5期37卷 643-664页

作者： meijiao wang Business School University of Shanghai for Science and Technology

This paper is concerned with stochastic H_2/H_∞ control problem for Poisson jump-diffusion systems with(x, u, v)-dependent noise, which are driven by Brownian motion and Poisson random jumps. A stochastic bounded real lemma(SBRL for short) for Poisson jump-diffusion systems is firstly established, which stands out on its own as a very interesting theoretical problem. Further, sufficient and necessary conditions for the existence of a state feedback H_2/H_∞ control are given based on four coupled matrix Riccati equations. Finally, a discrete approximation algorithm and an example are presented.

关键词： Poisson disturbance stochastic Riccati concerned lemma solvability Brownian quadratic attenuation

H_(2)/H_(∞) Control for Stochastic Jump-Diffusion Systems with Markovian Switching

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Journal of Systems Science & Complexity 2021年第3期34卷 924-954页

作者： wang meijiao MENG Qingxin SHEN Yang Business School University of Shanghai for Science and TechnologyShanghai 200093China Department of Mathematical Sciences Huzhou UniversityZhejiang 313000China School of Risk&Actuarial Studies University of New South WalesSydneyNSW 2052Australia

In this paper, a stochastic H2/H∞ control problem is investigated for Poisson jumpdiffusion systems with Markovian switching, which are driven by a Brownian motion and a Poisson random measure with the system parameters modulated by a continuous-time finite-state Markov chain.A stochastic jump bounded real lemma is proved, which reveals that the norm of the perturbation operator below a given threshold is equivalent to the existence of a global solution to a parameterized system of Riccati type differential equations. This result enables the authors to obtain sufficient and necessary conditions for the existence of H2/H∞ control in terms of two sets of interconnected systems of Riccati type differential equations.

关键词： H_(2)/H_(∞)control jump bounded real lemma jump-diffusion systems Markovian switching system of Riccati type differential equations

Forward and Backward Mean-Field Stochastic Partial Differential Equation and Optimal Control

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Chinese Annals of Mathematics,Series B 2019年第4期40卷 515-540页

作者： Maoning TANG Qingxin MENG meijiao wang Department of Mathematical Sciences Huzhou UniversityHuzhou 313000ZhejiangChina Department of Mathematical Sciences Huzhou UniversityHuzhou 313000ZhejiangChina Business School University of Shanghai for Science and TechnologyShanghai 200093China

This paper is mainly concerned with the solutions to both forward and backward mean-field stochastic partial differential equation and the corresponding optimal control problem for mean-field stochastic partial differential equation. The authors first prove the continuous dependence theorems of forward and backward mean-field stochastic partial differential equations and show the existence and uniqueness of solutions to them. Then they establish necessary and sufficient optimality conditions of the control problem in the form of Pontryagin’s maximum principles. To illustrate the theoretical results, the authors apply stochastic maximum principles to study the infinite-dimensional linear-quadratic control problem of mean-field type. Further, an application to a Cauchy problem for a controlled stochastic linear PDE of mean-field type is studied.

关键词： Mean-field Stochastic partial differential equation Backward stochastic partial differential equation Optimal control Maximum principle Adjoint equation

Emerging chemical engineering of exosomes as“bioscaffolds”in diagnostics and therapeutics

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Genes & Diseases 2023年第4期10卷 1494-1512页

作者： Jianwei wang meijiao wang Ning Jiang Shijia Ding Qiling Peng Lei Zheng School of Basic Medical Science Chongqing Medical UniversityChongqing 400016China Molecular Medicine Diagnostic and Testing Center Chongqing Medical UniversityChongqing 400016China Department of Pathology Chongqing Medical UniversityChongqing 400016China College of Laboratory Medicine Chongqing Medical UniversityChongqing 400016China Department of Laboratory Medicine Nanfang HospitalSouthern Medical University/The First School of Clinical MedicineSouthern Medical UniversityGuangzhouGuangdong 510515China

All cells release extracellular vesicles(EVs)as part of their normal *** one of the subtypes,exosomes(EXOs)have an average size range of approximately 40 nm e160 nm in *** from their inherent immunogenicity and biocompatibility,the utility of autologous EXOs has the potential for both disease diagnosis/*** are generally employed as“bioscaffolds”and the whole diagnostic and therapeutic effects are mainly ascribed to exogenous cargos on the EXOs,such as proteins,nucleic acids,and chemotherapeutic agents and fluorophores delivered into specific cells or *** en-gineering of EXOs for cargo loadings is one of the prerequisites for EXO-mediated diagnosis/*** revisiting EXO-mediated diagnosis/treatment,the most popular strategies to directly undertake loadings of exogenous cargos on EXOs include genetic and chemical ***,genetically-engineered EXOs can be merely produced by living organisms and intrinsically face some ***,chemical methodologies for engineered EXOs diversify cargos and extend the functions of EXOs in the diagnosis/*** this review,we would like to elucidate different chemical advances on the molecular level of EXOs along with the critical design required for diagnosis/***,the prospects of chemical engineering on the EXOs were critically ***,the superiority of EXO-medi-ated diagnosis/treatment via chemical engineering remains a challenge in clinical translation and ***,more chemical crosslinking on the EXOs is expected to be *** substantial claims in the literature,there is currently no review to exclusively summa-rize the chemical engineering to EXOs for diagnosis/*** envision chemical engi-neering of EXOs will encourage more scientists to explore more novel technologies for a wider range of biomedical applications and accelerate the successful translation of EXO-based drug“bioscaffolds”fro

关键词： Chemical engineering Diagnostics Exosomes Extracellular vesicles Theranostics Therapeutics

Surface modulation of MoS_(2)/O-ZnIn_(2)S_(4) to boost photocatalytic H_(2)evolution

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Journal of Energy Chemistry 2022年第12期75卷 276-284,I0007页

作者： Yanhua Peng Xinlei Guo Shufei Xu Ya'nan Guo Dongsheng Zhang meijiao wang Guosong Wei Xiaolong Yang Zhuo Li Yan Zhang Fenghui Tian College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071ShandongChina Comprehensive Technical Service Center of Penglai Customs Yantai 265600ShandongChina

To realize the continuous production of hydrogen energy,the efficient photocatalysts are required in the heterogeneous reaction for water ***,we reported a surface modulation strategy,via doping oxygen atoms to tune the surface state of ZnIn_(2)S_(4)nanosheets with cocatalyst MoS_(2)modification,to enhance water adsorption and surface catalytic reaction for boosting the photocatalytic ***,MoS_(2)/O-ZnIn_(2)S_(4)photocatalysts showed a remarkably superior photocatalytic H_(2)production performance of 4.002 mmol g^(-1)h^(-1)and an apparent quantum yield(AQY)of~2.53%,5.4 folds higher than ZnIn_(2)S_(4).Using operando infrared spectroscopy and DFT calculation,we revealed the dynamic structural evolution,as well as the active sites for water adsorption and the catalytic reaction at the MoS_(2)/O ZnIn_(2)S_(4)*** work reveals the effect of surface modulation on the photocatalytic activity for MoS_(2)/O-ZnIn_(2)S_(4)and offers a feasible method to devise excellent nanomaterial photocatalysts for H_(2)production.

关键词： Photocatalytic hydrogen evolution Surface modulation Oxygen doping MoS_(2) Operando DRIFT DFT calculation

Comparative Study on Three Chemotherapeutic Regimens for the Treat-ment of Advanced Epithelial Ovarian Cancer

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2000年第4期20卷 343-344页

作者：王常玉顾美皎王世宣马丁 Department of Obstetrics and Gynecology Tongji Hospital Tongji Medical University Wuhan

To investigate the best first-line chemotherapy regimen for the treatment of advanced ep- ithelial ovarian cancer (AEOC), the efficacy of three chemotherapy regimens for treatment of the pa- tients with AEOC in our hospital during Jan. 1992- Jan. 1999 was retrospectively analyzed. The therapeutic effects were compared with the supplement of Melphalan + Hexamethylme (PAM + HMM), cisplatin+ adriamycin+cyclophosphamide or isofamide (PAC) or cisplatin+cyclophospha- mide or isofamide (PC), Taxol+cisplatin (TP) combined chemotherapy after cytoreductive surgery. The results showed that the overall effective rate of TP was significantly higher than that of PAM+ HMM (P<0. 05); The complete remission rate of TP was significantly higher than that of PAM+ HMM and PAC or PC (all P<0. 05); The 2-year survival rate free of tumor of TP was obviously higher than that of PAM+HMM and PAC or PC(all P<0. 05). It was concluded that the therapeu- tic effect of TP regimen in the treatment of AEOC was better than PAM+HMM and PAC or PC and TP regimen could be recommended currently as the preferred first-line one for the treatment of AEOC.

关键词： epithelial ovarian cancer combined chemotherapy platinum taxol

商业健康保险对居民消费及其结构的影响——基于理性预期和家庭资产结构分析

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保险研究 2015年第6期 19-31页

作者：王美娇朱铭来南开大学经济学院天津300071

从微观决策层面出发,考察我国商业健康保险需求的影响因素及商业健康保险购买对非必要消费和整体消费结构的影响。以中国家庭金融调查(CHFS)数据为依托,通过处理效应模型的估计分析发现:在控制人口统计特征、收入、健康信息和经济主观... 详细信息

从微观决策层面出发,考察我国商业健康保险需求的影响因素及商业健康保险购买对非必要消费和整体消费结构的影响。以中国家庭金融调查(CHFS)数据为依托,通过处理效应模型的估计分析发现:在控制人口统计特征、收入、健康信息和经济主观态度等四个方面因素以后,个人购买商业健康保险行为会促进其非必要消费,同时会对整体消费结构有显著影响而且相比于其他变量影响更为有效。由于商业健康保险对消费水平和消费结构的影响弹性要远大于基本医疗保险、收入、养老保险等因素,我们进一步论证,大力发展商业健康保险不仅能够完善我国整体医疗体系架构、构建多层次医疗保障体系,而且还对我国调整消费结构、拉动内需等宏观政策具有较强的经济效应。

关键词：消费结构非必要消费商业健康保险

Comparative analysis of DNA methylation profiles between cultivated rice and its distant relative,Oryza brachyantha

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Comparative analysis of DNA methylation profiles between cul...

基于Wollaston棱镜阵列的目标识别系统

第十三届全国植物基因组学大会

作者： Bo Li~#,Jinfeng Chen~#,meijiao wang,Mingsheng Chen~* Institute of Genetics and Developmental Biology,Beijing 100101,China

DNA methylation,which is one of the most vital epigenetic regulators,was found to be involved with many important biological process,such as mobile element defense, gene expression regulation,imprinting and essential ...

关键词：

来源： cnki会议评论

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传感技术学报 2017年第2期30卷 326-330页

作者：王美娇孙琪李美萱长春理工大学光电信息学院长春130000

针对传统目标识别方法识别率低、受背景环境影响大等问题,设计了一种基于Wollaston棱镜阵列的偏振光谱成像系统。为了有效地探测野外目标的微弱信号,采用了高光通量的光学天线、偏振模块及干涉模块的设计。为了保证实时采集及高稳定性... 详细信息

针对传统目标识别方法识别率低、受背景环境影响大等问题,设计了一种基于Wollaston棱镜阵列的偏振光谱成像系统。为了有效地探测野外目标的微弱信号,采用了高光通量的光学天线、偏振模块及干涉模块的设计。为了保证实时采集及高稳定性的设计要求,采用了全静态光学器件完成偏振分光及空间光程调制。系统由偏振成像模块与光谱成像模块构成,可实现同一视场内4个偏振方向图像及光谱图像的同时采集,并经图像融合算法重建被测区域的偏振光谱图像。实验在不同测试距离上分别以钢板和某型火炮作为被测目标,分别采用本系统偏振模块与传统非偏振系统进行测试。实验结果显示,偏振目标识别信噪比高、受距离影响小。基于此实验,再将偏振识别图像与光谱识别图像相融合,从而构成偏振光谱图像。与传统目标识别图像相比较,本系统合成图像中目标清晰可见,受背景环境影响小、可探测距离远,具有很高的野外适应性及稳定性。

关键词：目标识别偏振光谱图像沃拉斯顿棱镜阵列信噪比