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Research 2024年第2期2023卷 329-337页

作者： Lei Liu Zhuzhu Du Jiaqi Wang Hongfang Du Sheng Wu Mengjun Li Yixuan Zhang Jinmeng Sun zhipeng Sun Wei Ai Frontiers Science Center for Flexible Electronics(FSCFE)and Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)127 West Youyi RoadXi'an 710072China Fujian Cross Strait Institute of Flexible Electronics(Future Technologies) Fujian Normal UniversityFuzhou 350117China School of Materials and Energy Guangdong University of TechnologyGuangzhou510006 GuangdongChina

Soft carbons have attracted extensive interests as competitive anodes for fast-charging sodium-ion batteries(SIBs);however,the high-rate performance is still restricted by their large ion migration barriers and sluggish reaction ***,we show a molecular design approach toward the fabrication of nitrogen and phosphorus codoped mesoporous soft carbon(NPSC).The key to this strategy lies in the chemical cross-linking reaction between polyphosphoric acid and p-phenylenediamine,associated with pyrolysis induced in-situ self-activation that creates mesoporous structures and rich heteroatoms within the carbon *** to the enlarged interlayer spacing,reduced ion diffusion length,and plentiful active sites,the obtained NPSC delivers a superb rate capacity of 215 mAh g-1 at 10 A g-1 and an ultralong cycle life of 4,700 cycles at 5 A g^(-1).Remarkably,the full cell shows 99%capacity retention during 100 continuous cycles,and maximum energy and power densities of 191 Wh kg^(-1)and 9.2 kW kg^(-1),*** believe that such a synthetic protocol could pave a novel venue to develop soft carbons with unique properties for advanced SIBs.

关键词： kinetics carbons linking

基于SSA和注意力机制BiLSTM的燃气轮机传感器故障诊断方法研究

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动力工程学报 2023年第9期43卷 1181-1189页

作者：程侃如王玉璋杨志鹏杨喜连上海交通大学机械与动力工程学院上海200240 上海发电设备成套设计研究院有限责任公司上海200240 上海交通大学电子信息与电气工程学院上海200240

提出了一种结合奇异谱分析(SSA)和基于注意力机制的双向长短期记忆(BiLSTM)深度网络的传感器故障诊断方法。首先,利用SSA对传感器信号进行预处理,得到信号的趋势项和周期项;其次,将预处理得到的时间序列输入带有注意力机制的BiLSTM深度... 详细信息

提出了一种结合奇异谱分析(SSA)和基于注意力机制的双向长短期记忆(BiLSTM)深度网络的传感器故障诊断方法。首先,利用SSA对传感器信号进行预处理,得到信号的趋势项和周期项;其次,将预处理得到的时间序列输入带有注意力机制的BiLSTM深度网络进行训练,得到分类器模型;最后,采用某9F级燃气轮机运行数据对该方法进行训练、验证和测试。结果表明:测试集的诊断准确率可达96.5%,该方法能有效解决故障信号稀疏性和幅度微弱性造成的传感器故障诊断精度低的问题。

关键词：燃气轮机传感器故障诊断深度学习

Multi-step state-based opacity for unambiguous weighted machines

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Science China(Information Sciences) 2024年

作者： zhipeng ZHANG Chengyi XIA Guoyuan QI Jun FU School of Artificial Intelligence Tiangong University School of Control Science and Engineering Tiangong University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University

Opacity is a central concept in the issue of privacy security and has been studied extensively in fields such as finite automata, probabilistic automata, and stochastic automata. Here, we investigate the problem of validating multi-step opaque properties through unambiguous weighted machines from the perspective of cyber-physical systems. First, the notion of multi-step state-based opacity for unambiguous weighted machines is presented and defined. It includes two variants of delays with a finite K and infinite steps. Subsequently, the weighted state estimate with K (infinite)-step delay is established by abstracting the possible state set that the system could have through these weighted observations. Meanwhile, to keep the observable weighted sequence consistent between the bidirectional observers, the unobserved weights of the reverse weighted machine are assumed to be reserved. Subsequently, the existence conditions are developed, and the corresponding algorithms, termed the weighted bidirectional observer, are generalized to verify these properties. Finally, several numerical examples are illustrated to demonstrate the effectiveness of the proposed method. Taken together, the current approach will be conducive to a deep understanding of the security and privacy of cyber-physical systems.

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qSTA2-2,a novel QTL that contributes to seed starch synthesis in Zea mays L.

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Journal of Integrative Agriculture 2024年第4期23卷 1118-1133页

作者： Minghao Cai Xuhui Li Zhi Liang Jie Wang Delin Li zhipeng Yuan Riliang Gu Jianhua Wang Li Li State Key Laboratory of Maize Bio-breeding/Key Laboratory of Crop Heterosis Utilization Ministry of Education/Beijing Innovation Center for Crop Seed Technology/College of Agronomy and BiotechnologyChina Agricultural UniversityBeijing 100193China Institute of Nanfan&Seed Industry Guangdong Academy of ScienceGuangzhou 510316China Institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

The seed storage materials accumulate during seed development,and are essential for seed germination and seedling *** we employed two bi-parental populations of an F2:3 population developed from a cross of improved 220(I220,small seeds with low starch)and PH4CV(large seeds with high starch),as well as recombinant-inbred lines(RILs)of X178(high starch)and its improved introgression line I178(low starch),to identify the genes that control seed storage *** identified a total of 12 QTLs for starch,protein and oil,which explained 3.44-10.79%of the phenotypic *** them,qSTA2-1 identified in F2:3 and qSTA2-2 identified in the RILs partially overlapped at an interval of 7.314-9.554 Mb,and they explained 3.44-10.21%of the starch content variation,so they were selected for further *** mapping of qSTA2-2 with the backcrossed populations of ^(I220)/PH4CV in each generation narrowed it down to a 199.7 kb interval that contains 14 open reading frames(ORFs).Transcriptomic analysis of developing seeds from the near-isogenic lines(NILs)of ^(I220)/PH4CV(BC_(5)F_(2))showed that only 11 ORFs were expressed in 20 days after pollination(DAP)*** of them were upregulated and six of them were downregulated in NIL^(I220),and the differentially expressed genes(DEGs)between NIL^(I220) and NIL^(PH4CV) were enriched in starch metabolism,hormone signal transduction and glycosaminoglycan *** the eleven NIL^(I220) differential expressed ORFs,ORF4(Zm00001d002260)and ORF5(Zm00001d002261)carry 75%protein sequence similarity,both encodes an glycolate oxidase,were the possible candidates of *** analysis and validation indicated that mutation of the qSTA2-2 locus resulted in the dysfunction of ABA accumulation,the embryo/endosperm ratio and the starch and hormone levels.

关键词： QTL mapping seed starch transcriptomic analysis hormone

基于单体到模组迁移的磷酸铁锂储能系统SOH评估方法

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高电压技术 2023年第10期49卷 4142-4149页

作者：杨智鹏宋政湘孟锦豪郑琨电力设备电气绝缘国家重点实验室西安710049 西安交通大学电气工程学院西安710049

为了解决传统机器学习的电池健康状态(state of health,SOH)评估方法在应用于大规模电化学储能电站的应用场景时,存在的数据处理慢和评估效果差等问题,提出了一种基于单体到模组迁移的磷酸铁锂储能系统SOH评估方法。基于实验获取了磷酸... 详细信息

为了解决传统机器学习的电池健康状态(state of health,SOH)评估方法在应用于大规模电化学储能电站的应用场景时,存在的数据处理慢和评估效果差等问题,提出了一种基于单体到模组迁移的磷酸铁锂储能系统SOH评估方法。基于实验获取了磷酸铁锂电池和电池组的老化数据集,构建了迁移学习的SOH评估模型框架,验证了小规模样本再训练模型的评估效果;测试了采用长短时记忆神经网络(long short-term memory networks,LSTM)和门控循环单元(gated recurrent unit,GRU)等模型的评估效果;对比了不同片段的短特征样本数据对评估结果的影响。研究结果证明,经过小规模样本数据优化后的电池单体模型能够实现对电池组SOH的评估;以GRU为主网络的迁移学习模型对电池组SOH的评估综合性能最优;采用电压区间为24.5~30 V片段短特征数据集的模型,能够进一步提高评估准确性和速度,对电池组SOH评估均方差可降低至0.1%,符合大规模储能电站场景下的使用需求。研究成果为电化学储能电站的运行状态评估方法提供可能的技术参考和数据支撑。

关键词：迁移学习磷酸铁锂电池健康状态小规模数据集短样本特征大规模电化学储能

Overview of radar detection methods for low altitude targets in marine environments

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Journal of Systems Engineering and Electronics 2024年第1期35卷 1-13页

作者： yang Yong yang Boyu School of Electronic Science National University of Defense TechnologyChangsha 410073China

In this paper,a comprehensive overview of radar detection methods for low-altitude targets in maritime environments is presented,focusing on the challenges posed by sea clutter and multipath *** performance of the radar detection methods under sea clutter,multipath,and combined conditions is categorized and summarized,and future research directions are outlined to enhance radar detection performance for low-altitude targets in maritime environments.

关键词： radar sea clutter multipath scattering detection low altitude target

Fresh-Keeping Decision and Coordination of Fresh Agricultural Product Supply Chain Considering Carbon Cap-and-Trade under Different Dominance

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Journal of Systems Science and Systems Engineering 2024年第1期33卷 30-51页

作者： yang yang Guanxin Yao China Institute for Agricultural Equipment Industrial Development Jiangsu UniversityZhenjiang212013China Jiangsu Modern Logistics Research Base Yangzhou UniversityYangzhou225009China

In the context of low carbon,this paper discussed the impact of the carbon cap-and-trade policy on the fresh-keeping decision-making of two-echelon fresh agricultural product supply chains under different dominance,and designed cost-sharing contracts to coordinate the supply chain of fresh agricultural products dominated by suppliers and retailers *** results showed that:dominance has no effect on the fresh-keeping decision and total revenue of fresh agricultural product supply chain,but it affects the internal income distribution,and dominance does not always bring more benefits;the implementation of carbon cap-and-trade reduces the fresh-keeping decision-making of fresh agricultural products supply chain and reduces the free-rider income of followers;the role of higher carbon trading price is twofold,which not only brings about the speculation of leading enterprises,but also promotes the application of low-carbon technologies;consumers’high preference for freshness,low-cost and high-efficiency low-carbon technology are all conducive to improving the fresh-keeping efforts and benefits of the supply chain;cost-sharing contracts can coordinate the supply chain of fresh agricultural products.

关键词： Dominant power carbon cap-and-trade policy fresh agricultural product supply chain fresh-keeping decision-making

Characteristics and mechanism of Ni^(2+)and Cd^(2+)adsorption by recovered perlite from agar extraction residue

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Chinese Journal of Chemical Engineering 2024年第8期72卷 141-152页

作者： Juan Wang Yanbing Zhu Zedong Jiang Xiping Du Mingjing Zheng Lijun Li Hui Ni Yuanpeng Wang zhipeng Li Qingbiao Li College of Ocean Food and Biological Engineering Jimei UniversityXiamen 361021China Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen 361021China Research Center of Food Biotechnology of Xiamen City Xiamen 361021China Xiamen Ocean Vocational College Xiamen 361021China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361021China

Ni^(2+)and Cd^(2+)in wastewater accumulated through the ecological chain and could jeopardize human *** of Ni^(2+)and Cd^(2+)from wastewater using recovered perlite was an important way to solve the problem of resource utilization of solid waste from agar *** previous study confirmed that recovered perlite from agar extraction residue had better pore size and specific surface area than commercial ***,the adsorption efficiency and adsorption mechanism of recovered perlite were the main factors limiting its adsorption *** adsorption process of Ni^(2+)and Cd^(2+)by recovered perlite in aqueous solution was described by the pseudo-second-order kinetic equation,and the relevant adsorption mechanism was mainly *** with commercial perlite,the adsorption removal rate of Ni^(2+)and Cd^(2+)by enzymatic recovered perlite could reach 92.9%and 89.2%,respectively,and were improved by 12.63%and 13.03%.Langmuir isothermal adsorption model could better describe the isothermal adsorption process of recovered perlite on heavy metal Ni^(2+)and Cd^(2+),and the relevant adsorption mechanism was mainly monolayer *** X-ray photoelectron spectroscopy(XPS)results indicated that the decrease of Si—O Si^(2+)hydroxyl coordination bond and the increase of C—Si bond might make the binding effect of recovered perlite with heavy metals *** competitive adsorption of Ni^(2+)and Cd^(2+)by recovered perlite was still dominated by chemisorption and monolayer *** study was expected to provide a theoretical basis and technical support for the removal of Ni^(2+)and Cd^(2+)from wastewater using recovered perlite from seaweed residue.

关键词： Agar extraction residue Recovered perlite Heavy metal ion Adsorption property

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CDR模式下存托凭证持有人利益保护探究

南海法学 2019年第4期3卷 113-124页

作者：杨治朋中南财经政法大学法学院

存托凭证制度实质是以“所有权二元结构”为特征的信托制度为基础而实施的股权代持结构。存托凭证是作为受托人的存托机构以发行人所托管的股票为基础而发行的一种股权凭证,持有人因此取得实际出资人和受益人的双重身份。在不同的法律... 详细信息

存托凭证制度实质是以“所有权二元结构”为特征的信托制度为基础而实施的股权代持结构。存托凭证是作为受托人的存托机构以发行人所托管的股票为基础而发行的一种股权凭证,持有人因此取得实际出资人和受益人的双重身份。在不同的法律关系中存托凭证持有人投资利益的保护模式大相径庭:在隐名出资关系中,存托凭证持有人可通过存托协议实现对股份收益权的救济,并通过存托人在股东大会上不统一行使表决权以充分实现其权利指示;在信托关系下,其以表决权信托约束存托人,通过行使受益人撤销权取消违背信托目的的行为。

关键词：存托凭证隐名出资股权信托受益人撤销权

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个旧锡矿高松矿田水文地质调查

中国矿业 2017年第S1期26卷 191-194页

作者：康德明杨智鹏云南锡业有限公司大屯锡矿云南个旧661021 云南财经大学城市与环境学院云南昆明650221

个旧锡矿高松矿田区是我国主要锡产区之一,随着开采标高下降,矿区地下水越来越复杂。本次调查通过剖面调查、岩石样品和钻孔岩芯分析、地下水环境调查等研究,从岩溶发育规律、天然水文地质、开采水文地质等方面进行了分析,结果表明:(1)... 详细信息

个旧锡矿高松矿田区是我国主要锡产区之一,随着开采标高下降,矿区地下水越来越复杂。本次调查通过剖面调查、岩石样品和钻孔岩芯分析、地下水环境调查等研究,从岩溶发育规律、天然水文地质、开采水文地质等方面进行了分析,结果表明:(1)高松矿田地下水可划分为两个边界条件清晰的独立水文地质单元,以大气降雨补给为主,集中以暗河或直接向溪沟泄流;(2)矿坑潜在充水水源主要有大气降水及个旧组含水层,其中矿坑与顶部岩溶洼地有直接水力联系,遇强降雨易发生透水危害;(3)个旧组含水层在未来开采水平依然发育有溶洞,矿坑开采很容易直接揭露岩溶水,引发突水危害。

关键词：水文地质调查个旧锡矿高松矿田