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Grap hical Minimax Game and Off-Policy Reinforcement Learning for Heterogeneous MASs with Spanning Tree Condition

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Guidance, Navigation and Control 2021年第3期1卷 1-23页

作者： Wei Dong jianan wang Chunyan wang Zhenqiang Qi Zhengtao Ding School of Aerospace Engineering Beijing Institute of Technology Beijing 100081 P.R.China Department of Research and Development China Academy of Launch Vehicle Technology P.O.Box 142-402 Beijing 100854P.R.China Department of Electrical and Electronic Engineering University of Manchester Manchester M139PL UK

In this paper,the optimal consensus control problem is investigated for heterogeneous linear multi-agent systems(MASs)with spanning tree condition based on game theory and rein-forcement ***,the graphical minimax game algebraic Riccati equation(ARE)is derived by converting the consensus problem into a zero-sum game problem between each agent and its *** asymptotic stability and minimax validation of the closed-loop systems are proved ***,a data-driven off-policy reinforcement learning algorithm is proposed to online learn the optimal control policy without the information of the system dynamics.A certain rank condition is established to guarantee the convergence of the proposed algorithm to the unique solution of the ***,the e®ectiveness of the proposed method is demonstrated through a numerical simulation.

关键词： Consensus control MASs minimax game reinforcement learning data-driven control policy iteration

Response optimization of a three-axis sensitive SERF magnetometer for closed-loop operation

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Chinese Physics B 2024年第6期33卷 291-297页

作者：周原锐孙永泽汪茜茜秦佳男张雪王言章 Key Laboratory of Geophysical Exploration Equipment(Ministry of Education) Jilin UniversityChangchun 130012China College of Instrumentation and Electrical Engineering Jilin UniversityChangchun 130012China Department of Physics Johannes Gutenberg-Universitat Mainz55128 MainzGermany Helmholtz-Institut GSI Helmholtzzentrum fur Schwerioneforschung55128 MainzGermany

Most triaxial-vectorial magnetic field measurements with spin-exchange relaxation free(SERF)atomic magnetometer(AM)are based on the quasi-steady-state solution of the Bloch ***,the responding speed of these methods is greatly limited because the frequency of the modulation signal should be slow enough to ensure the validity of the quasi-steady-state *** this work,a new model to describe the response of the three-axis sensitive SERF AM with high modulation frequency is presented and *** response of alkali-atomic spin to high-frequency modulation field is further investigated by solving the Bloch equation in a modulation-frequency-dependence *** solution is well verified by our experiments and can offer a reference for selection of modulation *** result shows a potential to achieve a SERF AM operating in a geomagnetic field without heavy aluminum shielding when the modulation frequencies are selected properly.

关键词： triaxial-vectorial magnetic field measurement spin-exchange relaxation free atomic magnetometer

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静电纺丝一维纳米材料在气敏传感器的应用

化学进展 2020年第2期32卷 344-360页

作者：朱蕾王嘉楠刘建伟王玲延卫西安交通大学环境科学与工程系西安710049 渭南师范学院数理学院渭南714099 西安交通大学理学院应用化学系西安710049

采用静电纺丝法制备的一维纳米材料具有比表面积大、孔隙率高以及优越的电化学性能等优势,可以显著改善气敏传感器的灵敏度,成为气敏传感器领域应用最广的材料之一。本文介绍了气敏传感器分类、静电纺丝技术原理和半导体气敏传感器的传... 详细信息

采用静电纺丝法制备的一维纳米材料具有比表面积大、孔隙率高以及优越的电化学性能等优势,可以显著改善气敏传感器的灵敏度,成为气敏传感器领域应用最广的材料之一。本文介绍了气敏传感器分类、静电纺丝技术原理和半导体气敏传感器的传感机理,详细综述了静电纺丝法制备不同传感材料,包括半导体金属氧化物、金属修饰金属氧化物、聚合物-金属氧化物和石墨烯-金属氧化物复合材料等在气敏传感器的研究现状,并对未来气敏传感器的发展方向进行了展望。

关键词：静电纺丝技术气敏传感器传感机理一维纳米材料半导体金属氧化物

Prevention and Nursing of Adverse Reactions of Novel Coronavirus Inactivated Vaccine (Vero Cells)

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Journal of Clinical and Nursing Research 2024年第5期8卷 100-107页

作者： Jingyu He Muyang Bian jianan Du Liping wang Department of Disease Control Xi’an People’s Hospital(Xi’an Fourth Hospital)Xi’an 710004China

Objective:To discuss and analyze the causes of adverse reactions caused by the inactivated novel coronavirus vaccine(Vero cells),and to propose methods of prevention and ***:A questionnaire was used to randomly select 229 adults who were vaccinated with the inactivated novel coronavirus vaccine(Vero cells)at Xi’an People’s Hospital(Xi’an Fourth Hospital).The adverse reactions were statistically ***:Among the 229 adults vaccinated with the inactivated novel coronavirus vaccine(Vero cells),30 experienced vaccination *** main reaction was local induration at the inoculation site,and dizziness was the primary systemic ***:To reduce the incidence of adverse reactions to the inactivated novel coronavirus vaccine(Vero cells),it is necessary to effectively evaluate the health status of adults before vaccination,select the correct vaccination site,and strictly implement the rules of 3-inspections,7-checks,and *** the operation process and providing thorough health education after vaccination can effectively reduce the occurrence of adverse reactions.

关键词： Novel coronavirus inactivated vaccine(Vero cells) Vaccination Adverse reactions nursing

Transfer and expression of rhSCF gene in human hematopoietic stem/progenitor cells

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中国实验血液学杂志 1997年第3期5卷 327-328页

作者： jianan wang, Yuanxiao Zhu, Chunning Lai, BeifenShenBeijing Institute of Basic Medical Sciences, Beijing100850

Stem cell factor (SCF) is a novel growth factor thatinfluences the growth and development of hematopoieticcells, germ cells and melanocytes. To explore

关键词： progenitor hematopoietic titer defective screening replication cloning packaging producing supernatant

Ventricular Tachycardia Mediated Cardiomyopathy in a Pregnant Woman with Atrial Septal Defect

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Ventricular Tachycardia Mediated Cardiomyopathy in a Pregnan...

2009年浙江省心电生理与起搏学术年会

作者： Jun jiang Ji Ma Xingguang Lv Meixiang Xiang Geng Xu jianan wang 浙江大学医学院附属第二医院心内科

Background Tachycardia mediated cardiomyopathy and peripartum cardiomyopathy are two relatively benign forms of dilated cardiomyopathy,in which cardiac function tends to respond quite good to cather ablation and medical therapy. Here we report a case of ventricular tachycardia mediated cardiomyopathy in a pregnant woman with atrial septal *** A 24 years old postpartum woman was admitted for further evaluation and treatment of ventricular

关键词： Ventricular tachycardia Atrial septal defect Electrocardiogram

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柔性锂硫电池材料:综述

材料导报 2020年第1期34卷 1155-1168页

作者：刘建伟王嘉楠朱蕾延卫西安交通大学环境科学与工程系西安交通大学理学院应用化学系

近年来,随着可穿戴和便携式产品的快速发展,对柔性电子设备的需求日益增加。柔性电池作为其关键部件,得到了越来越多的研究和关注,开发具有高能量密度的柔性电池,对柔性电子设备的未来发展意义重大。锂硫电池具有较高的理论容量和能量密... 详细信息

近年来,随着可穿戴和便携式产品的快速发展,对柔性电子设备的需求日益增加。柔性电池作为其关键部件,得到了越来越多的研究和关注,开发具有高能量密度的柔性电池,对柔性电子设备的未来发展意义重大。锂硫电池具有较高的理论容量和能量密度,且成本低廉,是未来储能领域发展的重要前沿方向。因此,开发高性能的柔性锂硫电池更能满足未来柔性可穿戴电子器件的需求。但是,传统锂硫电池很难实现较高的柔韧性,因为其电极材料多为刚性材料,不易或不能弯曲;电解液为液态,弯曲过程中,容易发生泄漏;电池结构多为传统物理组装,材料界面结合较差。电池弯曲变形后,将丧失原有性能,或发生性能的快速衰退。鉴于此,适用于柔性锂硫电池的电极材料、固态电解质的开发及电池结构设计创新成为国内外学者研究的热点。目前,柔性电极主要采用碳纳米管、石墨烯、碳布、碳纸等碳基材料或高分子材料,在此基础上的改性材料也被广泛应用。这些材料不仅可满足设备对于机械柔性的要求,同时其多孔及大比表面积等性质有助于离子快速的迁移及界面阻抗的降低等,提高了电池整体性能。固态电解质则多采用凝胶电解质、聚合物固态电解质及无机固态电解质,其化学稳定性优良,安全性高,具有较好的柔性和可塑性。同时,根据拓扑原理,可以设计新的电池结构,如纸张叠层型、线缆型、可编织型等,降低形变过程中电池内部结构的应力变化,以满足电池的柔性要求。本文从电极材料、固态电解质及电池结构设计三方面阐述了锂硫电池柔性化研究的相关成果,分析探讨了面临的问题及未来发展方向。

关键词：柔性锂硫电池电极材料固态电解质结构设计

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静电纺丝在钠离子电池中的应用研究进展

化学学报 2018年第9期76卷 666-680页

作者：王玲杨国锐王嘉楠王思岚彭生杰延卫西安交通大学环境科学与工程系西安710049 西安交通大学苏州研究院苏州215123 西安交通大学理学院应用化学系西安710049 南京航空航天大学材料科学与技术学院南京210016

钠离子电池具有与锂离子电池相似工作机理,因其原料资源丰富,是一种极具应用前景的新一代储能设备.然而,钠离子电池面临着电极材料体积膨胀过大、钠离子传输动力学较慢和能量密度偏低等问题,阻碍了其实用化.静电纺丝技术合成的一维钠离... 详细信息

钠离子电池具有与锂离子电池相似工作机理,因其原料资源丰富,是一种极具应用前景的新一代储能设备.然而,钠离子电池面临着电极材料体积膨胀过大、钠离子传输动力学较慢和能量密度偏低等问题,阻碍了其实用化.静电纺丝技术合成的一维钠离子电池电极材料,可通过形貌调控或碳复合方式有效缓冲储钠过程中电极的体积膨胀,而且具有连续的电子传递和较短的离子传输路径,从而改善钠离子传输动力学,以提高电池倍率性能.通过电纺还可简便地制备直接用于钠离子电池的柔性纤维膜来提高电池的能量密度.综述了静电纺丝技术制备钠离子电池材料的研究进展,主要包括正极和负极材料,对今后静电纺丝在钠离子电池中的发展进行了展望.

关键词：钠离子电池静电纺丝正极材料负极材料纳米纤维柔性

Principal role of heparanase in angiogenesis of hypoxia preconditioned mesenchymal stem cells

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Principal role of heparanase in angiogenesis of hypoxia prec...