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Policy evaluation for reinforcement learning over asynchronous multi-agent networks

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Policy evaluation for reinforcement learning over asynchrono...

从“夹缝求生”到“逆风翻盘”——数字时代网络电影的叙事特征、境遇解析与未来路向

第40届中国控制会议

作者： xingyu sha Jiaqi Zhang Keyou You Department of Automation and BNRist Tsinghua University

This paper proposes a fully asynchronous algorithm for policy evaluation of multi-agent reinforcement learning over networks. Without any form of coordination, agents can communicate with neighbors and compute their local variables using（possibly） delayed information at any time. Thus, the proposed scheme fully takes advantage of the distributed setting. We prove that our method converges to a neighborhood of the optimum at a linear rate, showing the computational advantage by reducing the amount of synchronization. Numerical experiments show that our method is robust to straggler agents.

关键词： Multi-agent reinforcement learning multi-agent networks fully asynchronous updates policy evaluation

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电影评介 2023年第21期 34-38页

作者：梁钦沙星雨教育部高校思想政治工作创新发展中心(上海交通大学) 上海交通大学马克思主义学院

党的二十大报告中提出:“繁荣发展文化事业和文化产业。”^([1])网络电影作为文化产业重要组成部分,其发展业态直接影响着推进文化自信与文化强国建设。网络电影不是“网络+电影”的简单交叠,它主要是“利用网络为媒介和平台,在网络上... 详细信息

党的二十大报告中提出:“繁荣发展文化事业和文化产业。”^([1])网络电影作为文化产业重要组成部分,其发展业态直接影响着推进文化自信与文化强国建设。网络电影不是“网络+电影”的简单交叠,它主要是“利用网络为媒介和平台,在网络上进行播放的一种新兴电影。”^([2])以实时弹幕、虚拟现实等数字化的方式出现,让观众不再满足于传统的单向式观影,转而寻求参与式、互动化的观影模式。作为数字时代的产物,网络电影的发展实现了从“杂草丛生”到“向阳生长”的转变。在数字时代,如何使网络电影始终“一路向阳”.

关键词：网络电影文化产业观影模式虚拟现实叙事特征数字时代文化自信文化强国建设

Fully asynchronous distributed optimization with linear convergence over directed networks

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Utilization of unmodified gold nanoparticles in colorimetric detection

中山大学学报(自然科学版)(中英文) 2023年第5期

作者： sha xingyu ZHANG Jiaqi YOU Keyou

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Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1757-1765页

作者： HE sha LIU DingBin WANG Zhuo CAI KaiYong JIANG xingyu College of Bioengineering Chongqing University Chongqing 400044 China Chinese Academy of Sciences Key Laboratory for Biological Effects of Nanomaterials and Nanosafety National Center for NanoScience and Technology Beijing 100190 China

This review begins with an overview of the appealing properties and various applications of gold nanoparticles, and briefly summarizes recent advances in using unmodified gold nanoparticles to detect different kinds of targets including nucleic acids, proteins, metal ions and small organic molecules. The key point to the unmodified gold nanoparticle-based visual detection assay is to control dispersion and aggregation of colloidal nanoparticles by targets of interest, which usually relies on affinities between gold nanoparticles and targets. The degree of dispersion or aggregation can be visualized through the change of the solution color or the precipitation of nanoparticles from the solution. Thus, the existence of the target molecules can be trans-lated into optical signals and monitored by the naked eye conveniently. Finally, some future prospects of this research field are given.

关键词： gold nanoparticles colorimetric detection biosensor

Recent progress in the application of microfluidic systems and gold nanoparticles in immunoassays

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Science China Chemistry 2011年第8期54卷 1227-1232页

作者： CHEN WenWen LI TangSong HE sha LIU DingBin WANG Zhuo ZHANG Wei JIANG xingyu CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology Beijing 100190 China Graduate Schoold of the Chinese Academy of Sctences Beijing 100049 China Key Laboratory of Microsystems and Microstructures Manufacturing Ministry of Education Harbin Institute of Technology Harbin 150080 China College of Bioengineering Chongqing University Chongqing 400044 China

Immunoassays are useful for many bioassays. Many new techniques and materials are introduced into the immunoassay to improve the efficiency. This paper reviews recent progress in the application of microfluidic systems and gold nanoparticles in immunoassay. The micro/nano technologies and materials can offer good sensitivity, fast detection, cost-effectiveness and easy signal readout. In particular, the miniaturization of microfluidics and colorimetric assays based on gold nanoparticles have dramatically improved the efficiency of immunoassays.

关键词： immunoassay microfluidics gold nanoparticles

Tailoring bioinks of extrusion-based bioprinting for cutaneous wound healing

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Bioactive Materials 2022年第11期7卷 178-194页

作者： Yuzhen Wang xingyu Yuan Bin Yao Shuoji Zhu Ping Zhu sha Huang Guangdong Cardiovascular Institute Guangdong Provincial People’s HospitalGuangdong Academy of Medical Sciences106 Zhongshan Er RoadGuangzhouGuangdong510080PR China Research Center for Tissue Repair and Regeneration Affiliated to the Medical Innovation Research Department Chinese PLA General Hospital28 Fu Xing RoadBeijing100853PR China PLA Key Laboratory of Tissue Repair and Regenerative Medicine and Beijing Key Research Laboratory of Skin Injury Repair and RegenerationChinese PLA General Hospital and PLA Medical College51 Fu Cheng RoadBeijing100048PR China Department of Burn and Plastic Surgery Air Force Hospital of Chinese PLA Central Theater Command589 Yunzhong RoadPingcheng DistrictDatongShanxi037006PR China School of Medicine Nankai University94 Wei Jing RoadTianjin300071PR China Academy of Medical Engineering and Translational Medicine Tianjin University300072PR China

Extrusion-based bioprinting (EBB) holds potential for regenerative medicine. However, the widely-used bioinks of EBB exhibit some limitations for skin regeneration, such as unsatisfactory bio-physical (i.e., mechanical, structural, biodegradable) properties and compromised cellular compatibilities, and the EBB-based bioinks with therapeutic effects targeting cutaneous wounds still remain largely undiscussed. In this review, the printability considerations for skin bioprinting were discussed. Then, current strategies for improving the physical properties of bioinks and for reinforcing bioinks in EBB approaches were introduced, respectively. Notably, we highlighted the applications and effects of current EBB-based bioinks on wound healing, wound scar formation, vasculari-zation and the regeneration of skin appendages (i.e., sweat glands and hair follicles) and discussed the challenges and future perspectives. This review aims to provide an overall view of the applications, challenges and promising solutions about the EBB-based bioinks for cutaneous wound healing and skin regeneration.

关键词： Bioink Extrusion-based bioprinting Cutaneous wound healing Skin regeneration

Highly integrated sulfur cathodes with strong sulfur/high-strength binder interactions enabling durable high-loading lithium-sulfur batteries

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Journal of Energy Chemistry 2020年第10期29卷 71-79页

作者： Arif Rashid xingyu Zhu Gulian Wang Chengzhi Ke sha Li Pengfei Sun Zhongli Hu Qiaobao Zhang Li Zhang College of Energy Soochow Institute for Energy and Materials InnovationsSoochow UniversitySuzhou 215006JiangsuChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina

The development of high-sulfur-loading Li-S batteries is a key prerequisite for their commercial *** requires to surmount the huge polarization,severe polysulfide shuttling and drastic volume change caused by electrode ***-strength polar binders are ideal for constructing robust and long-life high-loading sulfur cathodes but show very weak interfacial interaction with non-polar sulfur *** address this issue,this work devises a highly integrated sulfur@polydopamine/highstrength binder composite cathodes,targeting long-lasting and high-sulfur-loading Li-S *** super-adhesion polydopamine(PD)can form a uniform nano-coating over the graphene/sulfur(G-S)surface and provide strong affinity to the cross-linked polyacrylamide(c-PAM)binder,thus tightly integrating sulfur with the binder network and greatly boosting the overall mechanical strength/conductivity of the ***,the PD coating and c-PAM binder rich in polar groups can form two effective blockades against the effusion of soluble *** such,the 4.5 mg cm−2 sulfur-loaded G-S@PD-c-PAM cathode achieves a capacity of 480 mAh g−1 after 300 cycles at 1 C,while maintaining a capacity of 396 mAh g−1 after 50 cycles at 0.2 C when the sulfur loading rises to 9.1 mg cm−*** work provides a system-wide concept for constructing high-loading sulfur cathodes through integrated structural design.

关键词： Cross-linked high-strength polar binder Highly integrated electrode structure High-sulfur-loading Li-S battery Polydopamine nano-bonding layer Strong sulfur/binder interaction

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复合型缓蚀剂对珠海海水中的碳钢缓蚀研究

广东化工 2016年第16期43卷 50-51,57页

作者：陈汇敏杨紫琪刘英炎沙幸瑜盘舜杰李潇魏永春北京理工大学珠海学院化工与材料学院广东珠海519085

针对珠海海水进行水样分析后,选择钨酸钠、钼酸钠、柠檬酸钠三种缓蚀剂按不同比例组合,建立复合缓蚀剂方案,并配制一系列缓蚀剂,通过静态失重法、极化曲线发法测定其在珠海海水中对碳钢的缓蚀效果,试验条件下,缓蚀剂复合配方钨酸钠、钼... 详细信息

针对珠海海水进行水样分析后,选择钨酸钠、钼酸钠、柠檬酸钠三种缓蚀剂按不同比例组合,建立复合缓蚀剂方案,并配制一系列缓蚀剂,通过静态失重法、极化曲线发法测定其在珠海海水中对碳钢的缓蚀效果,试验条件下,缓蚀剂复合配方钨酸钠、钼酸钠、柠檬酸钠最佳配比为9∶8∶3。

关键词：缓蚀剂海水静态失重法极化曲线碳钢

The role of CTHRC1 in promotion of cutaneous wound healing

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Signal Transduction and Targeted Therapy 2022年第7期7卷 2144-2147页

作者： Xianlan Duan xingyu Yuan Bin Yao Wei Song Zhao Li Enhejirigala Yi Kong Yuzhen Wang Xiaobing Fu sha Huang School of Medicine NanKai University94 Wei Jin RoadTianjin 300071People’s Republic of China Research Center for Tissue Repair and Regeneration affiliated to the Medical Innovation Research Department PLA General Hospital51 Fu Cheng RoadBeijing 100048People’s Republic of China Academy of Medical Engineering and Translational Medicine Tianjin University92 Weijin RoadTianjin 300072People’s Republic of China

Dear Editor,Wound healing after tissue injury is a well-orchestrated process involving various cell types,growth factors,and extracellular matrix(ECM)*** triple helix repeat containing1(CTHRC1),a secreted ECM protein,is transiently expressed in the repair process after arterial injury and myocardial infarction,1 regulating collagen matrix deposition and cell migration through TGF-βsignaling pathway.2 However,the expression and function of CTHRC1 during cutaneous wound repair remain largely *** initially investigated the spatiotemporal expression of CTHRC1 during full-thickness cutaneous wound *** searching the GEO database,we found a transcriptome dataset(GSE23006),which analyzed the gene expression of mouse skin wounds from day 0 to day 10,spanned all stages of the wound healing process.

关键词： healing wound arterial