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IEEE/CAA Journal of Automatica Sinica 2025年第1期 267-269页

作者： Kailong liu Yuhang liu Qiao peng Naxin Cui Chenghui Zhang the School of Control Science and Engineering Shandong University the Information Technology Analytics & Operations GroupQueen's University Belfast

Dear Editor,Health management is essential to ensure battery performance and safety, while data-driven learning system is a promising solution to enable efficient state of health(SoH) estimation of lithium-ion(Liion) batteries. However, the time-consuming signal data acquisition and the lack of interpretability of model still hinder its efficient deployment. Motivated by this, this letter proposes a novel and interpretable data-driven learning strategy through combining the benefits of explainable AI and non-destructive ultrasonic detection for battery SoH estimation. Specifically, after equipping battery with advanced ultrasonic sensor to promise fast real-time ultrasonic signal measurement, an interpretable data-driven learning strategy named generalized additive neural decision ensemble(GANDE) is designed to rapidly estimate battery SoH and explain the effects of the involved ultrasonic features of interest.

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Endurable SSD-Based Read Cache for Improving the Performance of Selective Restore from Deduplication Systems

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Journal of Computer Science & Technology 2018年第1期33卷 58-78页

作者： Jian liu Yun-peng Chai xiao Qin Yao-Hong liu Division of Computer Science and Engineering Louisiana State University Baton Rouge LA 70803 U.S.A. Key Laboratory of Data Engineering and Knowledge Engineering Ministry of Education of China Beijing 100872 China School of Information Renmin University of China Beijing 100872 China Shelby Center for Engineering Technology Department of Computer Science and Software Engineering Samuel Ginn College of Engineering Auburn University Auburn AL 368~9-53~7 U.S.A.

Deduplication has been commonly used in both enterprise storage systems and cloud storage. To overcome the performance challenge for the selective restore operations of deduplication systems, solid-state-drive-based （i.e., SSD-based） re^d cache cm, be deployed for speeding up by caching popular restore contents dynamically. Unfortunately, frequent data updates induced by classical cache schemes （e.g., LRU and LFU） significantly shorten SSDs＇ lifetime while slowing down I/O processes in SSDs. To address this problem, we propose a new solution -- LOP-Cache to greatly improve tile write durability of SSDs as well as I/O performance by enlarging the proportion of long-term popular （LOP） data among data written into SSD-based cache. LOP-Cache keeps LOP data in the SSD cache for a long time period to decrease the number of cache replacements. Furthermore, it prevents unpopular or unnecessary data in deduplication containers from being written into the SSD cache. We implemented LOP-Cache in a prototype deduplication system to evaluate its pertbrmance. Our experimental results indicate that LOP-Cache shortens the latency of selective restore by an average of 37.3% at the cost of a small SSD-based cache with only 5.56% capacity of the deduplicated data. Importantly, LOP-Cache improves SSDs＇ lifetime by a factor of 9.77. The evidence shows that LOP-Cache offers a cost-efficient SSD-based read cache solution to boost performance of selective restore for deduplication systems.

关键词： data deduplication solid state drive (SSD) flash cache endurance

Novel stacking models based on SMOTE for the prediction of rockburst grades at four deep gold mines

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Underground Space 2024年第6期19卷 169-188页

作者： peng xiao Zida liu Guoyan Zhao pengzhi Pan State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China School of Resources and Safety Engineering Central South UniversityChangsha 410083China

Rockburst is a frequently encountered hazard during the production of deep gold *** prediction of rockburst is an important measure to prevent rockburst in gold *** study considers seven indicators to evaluate rockburst at four deep gold *** research and rock tests were performed at two gold mines in China to collect these seven indicators and rockburst *** collected database was oversampled by the synthetic minority oversampling technique(SMOTE)to balance the categories of rockburst *** models combining tree-based models and logistic regression(LR)were established by the balanced *** datasets from another two deep gold mines were implemented to verify the applicability of the predictive *** stacking model combining extremely randomized trees and LR based on SMOTE(SMOTE-ERT-LR)was the best model,and it obtained a training accuracy of 100%and an evaluation accuracy of 100%.Moreover,model evaluation suggested that SMOTE can enhance the prediction performance for weak rockburst,thereby improving the overall ***,sensitivity analysis was performed for *** results indicated that the SMOTE-ERT-LR model can achieve satisfactory performance when only depth,maximum tangential stress index,and linear elastic energy index were available.

关键词： Rockburst prediction Gold mine Stacking model SMOTE

Co_(3)O_(4)/stainless steel catalyst with synergistic effect of oxygen vacancies and phosphorus doping for overall water splitting

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Tungsten 2023年第1期5卷 100-108页

作者： xiao-xiao Li xiao-Chao liu Chao liu Jin-Ming Zeng xiao-peng Qi College of Rare Earth Jiangxi University of Science and TechnologyGanzhou 341000China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China

The electrolysis of water into hydrogen and oxygen provides an effective means of storing electrical energy *** current challenge is to design an optimal catalyst that exhibits low overpotentials,long-term stability,universal availability,and only uses inexpensive ***,a Co3O4nanoflower/stainless steel(P-Ov-CO_(3)O_(4)/SS) catalyst with both oxygen vacancies(Ovs) and phosphorus doping was perfectly prepared via a simple three-step *** Ovs promoted charge transfer and accelerated the electrocatalysis,while P finely tuned the surface charge *** resulted in numerous active sites for catalysis,and the synergistic effect of phosphorus doping and oxygen vacancies was finely *** resultant electrocatalyst exhibited low hydrogen evolution overpotentials of 118 mV(-10 mA·cm^(-2)) and 242(-200 mA·cm^(-2)),as well as oxygen evolution overpotentials of 327 mV(100 mA·cm^(-2)) and 370 mV(200 mA·cm^(-2)),owing to the excellent synergistic effect of the Ovs and low-temperature ***,P-Ov-Co_(3)O_(4)/SS//P-Ov-Co_(3)O_(4)/SS exhibited a low water splitting voltage of 1.681 V at 20 *** findings will enable the synthesis of novel high-performance electrocatalysts for overall water splitting.

关键词： Oxygen vacancy Phosphorus doping P-Ov-Co_(3)O_(4)/SS Overall water splitting

重组蛋白AdipoR1-EGFP真核表达质粒的构建和表达

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中国医药生物技术 2017年第3期12卷 215-220页

作者：李霓王潇许艳妮韩小婉刘鹏司书毅中国医学科学院北京协和医学院药物研究所天然药物活性物质与功能国家重点实验室北京100050 中国医学科学院北京协和医学院药物研究所医药生物技术研究所国家新药(微生物)筛选实验室北京100050

目的构建重组pEGFP-N1-AdipoR1真核表达质粒并于HEK293T细胞中瞬时表达。方法提取HepG2细胞总RNA,逆转录合成cDNA,以其为模板,PCR扩增AdipoR1基因,将其插入到pEGFP-N1质粒中,构建重组真核表达质粒pEGFP-N1-AdipoR1,通过脂质体法转染HEK2... 详细信息

目的构建重组pEGFP-N1-AdipoR1真核表达质粒并于HEK293T细胞中瞬时表达。方法提取HepG2细胞总RNA,逆转录合成cDNA,以其为模板,PCR扩增AdipoR1基因,将其插入到pEGFP-N1质粒中,构建重组真核表达质粒pEGFP-N1-AdipoR1,通过脂质体法转染HEK293T细胞,采用酶标仪测定荧光强度,Western blot方法鉴定融合蛋白Adipo R1-EGFP的表达情况。结果 Western blot结果显示,融合蛋白AdipoR1-EGFP在分子量约70 kD处可见明显的目的条带;同时,与未转染质粒的空白对照组相比,转染pEGFP-N1和pEGFP-N1-AdipoR1的细胞中荧光强度都有明显升高,表明融合蛋白AdipoR1-EGFP在HEK293T细胞中成功表达,并且EGFP的荧光强度测定能很好地反映细胞中融合蛋白的表达水平。结论构建并表达AdipoR1-EGFP融合蛋白,所采用的EGFP融合蛋白表达方法简单高效,重复性好,为今后AdipoR1蛋白的表达及功能研究提供了重要参考。

关键词：受体,脂联素绿色荧光蛋白质类膜融合蛋白质类

Study of genetic evolution of oil inclusion and density of surface oil by measurement of fluorescence lifetime of crude oil and oil inclusion

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Science China Earth Sciences 2017年第1期60卷 95-101页

作者： liu DeHan xiao XianMing CHENG peng SUN YongGe TIAN Hui peng PingAn Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China School of Earth Sciences Zhejiang University Hangzhou 310058 China

By using fluorescence lifetime image microscope （FLIM） and time-correlated single photon counting （TCSPC） technique, we measured fluorescence lifetime of crude oils with density of 0.9521-0.7606 g/cm3 and multiple petroleum inclusions from Tazhong uplift of Tarim Basin. As indicated by the test results, crude oil density is closely correlated with average fluorescence lifetime following the regression equation Y=-0.0319X＋0.9411, which can thus be used to calculate density of oil inclusions in relation to fluorescence lifetime and density of corresponding surface crude. For type A oil inclusions showing brown-yellow fluorescence from Tazhong 1 well in Tarim Basin, their average fluorescence lifetime was found to be 2.144-2.765 ns, so the density of surface crude corresponding to crude trapping these oil inclusions is 0.852-0.873 g/cm3, indicating that they are matured oil inclusions trapped at earlier stage ofoil formation. For type B oil inclusions with light yellow-white fluorescence, their average fluorescence lifetime was found to be 4.0294.919 ns, so the density of surface crude corresponding to crude trapping these oil inclusions is 0.784-0.812 g/cm3, indicating that they are higher matured oil inclusions trapped at the second stage of oil formation. For type C oil inclusions showing light blue-green fluorescence, their average fluorescence lifetime was found to be 5.0634.168 ns, so the density of surface crude corresponding to crude trapping these oil inclusions is 0.743-0.779 g/cm3, indicating that they are highly-matured light oil inclusions trapped at the third stage of oil formation.

关键词： Oil inclusion Fluorescence lifetime Tarim Basin Crude density Crude charging episode

Secure and Trusted Interoperability Scheme of Heterogeneous Blockchains Platform in IoT Networks

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China Communications 2023年第11期20卷 225-241页

作者： xiao liu Mingyuan Li Haipeng peng Shoushan Luo School of Electronic Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

With the rapid development of the Internet of Things(IoT),there is an increasing need for interac-tion between different *** order to improve the level of interconnection,especially the interoper-ability of users/devices between different nodes is very *** the IoT heterogeneous blockchain sce-nario,how to ensure the legitimacy of the chain and how to confirm the identity of cross-chain informa-tion users/devices become the key issues to be solved for blockchain *** this paper,we pro-pose a secure and trusted interoperability mechanism for IoT based on heterogeneous chains to improve the security of blockchain *** this mecha-nism,a primary sidechain architecture supporting au-thentication at both ends of the heterogeneous chain is *** addition,a distributed gateway archi-tecture is proposed for cross-chain authentication and protocol *** security and performance analysis shows that our scheme is feasible and effec-tive in improving the security of cross-chain opera-tions in IoT.

关键词： authentication blockchain Interoperabil-ity heterogeneous chain IoT

Experimental Study on Interference Effect of Three Risers Arranged in Tandem with Variable Spacing Ratios

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China Ocean Engineering 2023年第3期37卷 408-419页

作者： ZHANG peng liu Li-hua liu Ming REN xiao-hui WANG Yu School of Civil Engineering Qingdao University of TechnologyQingdao 266520China College of Civil Engineering and Architecture Shandong University of Science and TechnologyQingdao 266590China Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation Qingdao 266590China School of Petroleum Engineering China University of Petroleum(East China)Qingdao 266580China

Taking the three-riser group arranged in tandem as the research subject,an experimental study was carried out on the risers arranged in *** purpose is to explore the sensitivity of the dynamic response of each riser to spacing ratio and reveal the physical mechanism of riser groups under the interference *** spacing ratios of the adj acent risers are 4.0,5.0,6.0,and *** the spacing between the risers of 4.0D,the strong feedback effect increases the cross-flow(CF) displacement amplitude of the upstream *** shielding effect is the key factor affecting the interference effect on the midstream and downstream *** low reduced velocities,the shielding area initially appears,the displacement amplitude of the midstream and downstream risers varies greatly,the vibration of the two risers is still dominated by the first-order mode,and the transition between adjacent vibration modes is *** multi-frequency superposition phenomenon is very significant at high reduced *** most sensitive interference spacing under the test conditions is *** to the separation of the incoming flow and the double shielding effect of the upstream and midstream risers,the regular vortex-induced vibration in the wake area of the downstream riser is broken,and the vibration in the two directions is *** general,the interference effect is more significant for the CF vibration of the three-riser groups than the in-line(IL) vibration.

关键词： three-riser group tandem arrangement vortex-induced vibration wake interference variable spacing ratios

Climate change and population health research in China: Knowledge gaps and further directions

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Advances in Climate Change Research 2020年第3期11卷 273-278页

作者： peng BI SHI xiao-Ming liu Qi-Yong School of Public Health The University of AdelaideAdelaideSA 5000Australia National Institute of Environmental Health Chinese Center for Disease Control and PreventionBeijing 102206China National Institute of Infectious Diseases Chinese Center for Disease Control and PreventionBeijing 102206China

Climate change and its impact on population health have been well explored in China in recent years,especially health risk assessments such as studying its impact on the transmission and development of climate-sensitive infectious diseases and non-communicable ***,knowledge gaps including using morbidity as health indicators(***,ED visits,and ambulance call-outs),identifying disease attributable contributions to climate variability and burden of diseases due to climate change,calculating related healthcare costs,and developing climate change adaptation and mitigation strategies need to be *** research directions could focus on both mitigation and health adaptation studies,such as exploring active transportation and green hospitals,studying health co-benefits,identifying vulnerable populations,prioritizing resource allocation,building healthcare capacity and capability,evaluating intervention effect,developing tailored risk communication strategies and community health education packages for vulnerable communities in the context of climate change.

关键词： Climate change Population health China Future direction