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Machine learning and neural network supported state of health simulation and forecasting model for lithium-ion battery

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Frontiers in Energy 2024年第2期18卷 223-240页

作者： Nan QI Kang YAN Yajuan YU Rui LI rong HUANG lai CHEN Yuefeng SU Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China Department of Energy and Environmental Materials School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Electric Vehicle Co. Ltd.Beijing 100176China

As the intersection of disciplines deepens,the field of battery modeling is increasingly employing various artificial intelligence(AI)approaches to improve the efficiency of battery management and enhance the stability and reliability of battery *** paper reviews the value of AI methods in lithium-ion battery health management and in particular analyses the application of machine learning(ML),one of the many branches of AI,to lithium-ion battery state of health(SOH),focusing on the advantages and strengths of neural network(NN)methods in ML for lithium-ion battery SOH simulation and *** is one of the important branches of ML,in which the application of NNs such as backpropagation NN,convolutional NN,and long short-term memory NN in SOH estimation of lithium-ion batteries has received wide *** so far have shown that the utilization of NN to model the SOH of lithium-ion batteries has the advantages of high efficiency,low energy consumption,high robustness,and scalable *** the future,NN can make a greater contribution to lithium-ion battery management by,first,utilizing more field data to play a more practical role in health feature screening and model building,and second,by enhancing the intelligent screening and combination of battery parameters to characterize the actual lithium-ion battery SOH to a greater *** in-depth application of NN in lithium-ion battery SOH will certainly further enhance the science,reliability,stability,and robustness of lithium-ion battery management.

关键词： machine learning lithium-ion battery state of health neural network artificial intelligence

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ClusterSLAM:A SLAM backend for simultaneous rigid body clustering and motion estimation

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Computational Visual Media 2021年第1期7卷 87-101页

作者： Jiahui Huang Sheng Yang Zishuo Zhao Yu-Kun lai shi-Min Hu BNRist Department of Computer Science and TechnologyTsinghua UniversityBeijing 100084China Alibaba A.I.Labs Hangzhou 311121China School of Computer Science and Informatics Cardiff UniversityCardiffCF243AAUK

We present a practical backend for stereo visual SLAM which can simultaneously discover individual rigid bodies and compute their motions in dynamic *** recent factor graph based state optimization algorithms have shown their ability to robustly solve SLAM problems by treating dynamic objects as outliers,their dynamic motions are rarely *** this paper,we exploit the consensus of 3 D motions for landmarks extracted from the same rigid body for clustering,and to identify static and dynamic objects in a unified ***,our algorithm builds a noise-aware motion affinity matrix from landmarks,and uses agglomerative clustering to distinguish rigid *** decoupled factor graph optimization to revise their shapes and trajectories,we obtain an iterative scheme to update both cluster assignments and motion estimation *** on both synthetic scenes and KITTI demonstrate the capability of our approach,and further experiments considering online efficiency also show the effectiveness of our method for simultaneously tracking ego-motion and multiple objects.

关键词： dynamic SLAM motion segmentation scene perception

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Transcutaneous electrical acupoint stimulation benefits postoperative pain relief of oocyte retrieval:A randomized controlled trial

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Journal of Integrative Medicine 2024年第1期22卷 32-38页

作者： Li-ying Liu Yang Su rong-rong Wang Yuan-yuan lai Lei Huang Yi-ting Li Xin-yue Tao Meng-hua Su Xiao-yan Zheng shi-chen Huang Yong-na Wu Si-yi Yu Fan-rong Liang Jie Yang Acupuncture and Tuina School Chengdu University of Traditional Chinese MedicineChengdu 610000Sichuan ProvinceChina Traditional Chinese Medicine Department Sichuan Jinxin Xi’nan Women's and Children's HospitalChengdu 610000Sichuan ProvinceChina

Background Transvaginal oocyte retrieval is frequently followed by adverse events related to anesthesia and the *** research showed that transcutaneous electrical acupoint stimulation(TEAS)can relieve intraoperative pain and postoperative *** This study examined whether TEAS can alleviate pain and relieve adverse symptoms after oocyte ***,setting,participants and interventions Altogether 128 patients were randomly divided into the TEAS group and the mock TEAS *** two groups received a 30-minute-long TEAS or mock TEAS treatment that began 30 min after oocyte *** outcome measures The primary outcome was the visual analog scale(VAS)pain *** outcomes were pressure pain threshold,McGill score,pain rating index(PRI),present pain intensity(PPI),VAS stress score,VAS anxiety score,and postoperative adverse *** The baseline characteristics of the two groups were comparable(P>0.05).The VAS pain scores of the TEAS group were lower than those of the mock TEAS group at 60 and 90 min after oocyte retrieval(P0.05).The TEAS group was superior to the mock TEAS group for relieving postoperative adverse symptoms(P<0.05).Conclusion TEAS treatment can relieve postoperative pain and postoperative adverse symptoms for patients undergoing oocyte retrieval.

关键词： Transcutaneous electrical acupoint stimulation Fertilization Embryo transfer Oocyte retrieval Pain Randomized controlled trial

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Retrospective observation of therapeutic effects of adult auxiliary partial living donor liver transplantation on postpartum acute liver failure: A case report

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World Journal of Gastroenterology 2015年第9期21卷 2840-2847页

作者： Chuan-Yun Li Wei lai shi-Chun Lu Department of Hepatobiliary Surgery and Liver Transplantation Center Beijing You-An HospitalCapital Medical University Department of Hepatobiliary Surgery the First People’s Hospital of Chengdu Institute and Hospital of Hepatobiliary Surgery Key Laboratory of Digital Hepatobiliary Surgery of Chinese PLAChinese PLA Medical SchoolChinese PLA General Hospital

We present a female patient with preterm labor, severe viral hepatitis B of acute phase, hepatic encephalopathy stage Ⅲ and *** delivery, the illness was exacerbated and the patient presented with clinical signs of vital organ dysfunctions such as acute respiratory distress syndrome, cerebral edema and hypoxemia that needed mechanical *** liver transplantation was recommended after multidisciplinary panel *** donor, her mother, consented to donate her right *** partial orthotopic living donor liver transplantion(APOLDLT) was *** operation, the patient was on triple medication of tacrolimus plus mofetil mycophenolate and prednisone for *** combination of antihepatitis B virus(HBV) immunoglobulin and entecavir was initiated for anti-HBV *** the patient and the donor recovered well without any *** patient was followed up *** liver function, clinical signs and symptoms improved *** now, the recipient has been living for more than 78 mo free of any *** APOLDLT is a life-saving modality for rescuing patients with high-risk acute liver failure following HBV infection without available donor and hence is recommended under standardized antiviral therapy coverage as stated above.

关键词： Auxiliary partial orthotopic living donor liver tr

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Water self-purification via electron donation effect of emerging contaminants arousing oxygen activation over ordered carbonenhanced CoFe quantum dots

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Environmental Science and Ecotechnology 2024年第4期20卷 167-176页

作者： Yuhao shi Dongxuan Yang Chun Hu lai Lyu Institute of Environ.Res.at Greater Bay Area Key Laboratory forWater Quality and Conservation of the Pearl River DeltaMinistry of EducationGuangzhou UniversityGuangzhou510006China

The release of emerging contaminants(ECs)into aquatic environments poses a significant risk to global water *** oxidation processes(AOPs),while effective in removing ECs,are often resource and ***,we introduce a novel catalyst,CoFe quantum dots embedded in graphene nanowires(CoFeQds@GN-Nws),synthesized through anaerobic *** uniquely features electron-rich and electron-poor micro-regions on its surface,enabling a self-purification mechanism in *** is achieved by harnessing the internal energy of wastewater,particularly the bonding energy of pollutants and dissolved oxygen(DO).It demonstrates exceptional efficiency in removing ECs at ambient temperature and pressure without the need for external oxidants,achieving a removal rate of nearly 100.0%.The catalyst's structure-activity relationship reveals that CoFe quantum dots facilitate an unbalanced electron distribution,forming these *** leads to a continuous electrondonation effect,where pollutants are effectively cleaved or ***,DO is activated into superoxide anions(O_(2)^(·-)),synergistically aiding in pollutant *** approach reduces resource and energy demands typically associated with AOPs,marking a sustainable advancement in wastewater treatment technologies.

关键词： Quantum dots Emerging contaminants removal Self-purification system Dissolved oxygen

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Optimal algorithms and intuitive explanations for Markowitz's portfolio selection model and Sharpe's ratio with no short-selling

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Science China Mathematics 2008年第11期51卷 2033-2042页

作者： shi NingZhong lai Min ZHENG Shurong ZHANG BaoXue School of Mathematics&Statistics and Key Laboratory for Applied Statistics of MOE Northeast Normal UniversityChangchun 130024China School of Mathematics Jilin UniversityChangchun 130012China

Most of the previous researches about portfolio analysis focus on short-selling. In fact, no short-selling is also important because short-selling is not allowed in stock markets of some countries. This paper gives the sufficient and necessary conditions and proposes an optimal algorithm for Markowitz’s mean-variance models and Sharpe’s ratio with no short-selling. The optimal algorithm makes it easier to obtain the efficient frontiers with no short-selling.

关键词： portfolio analysis Sharpe’s ratio no short-selling 65C20 46N10 47N10

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3D indoor scene modeling from RGB-D data:a survey

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Computational Visual Media 2015年第4期1卷 267-278页

作者： Kang Chen Yu-Kun lai shi-Min Hu Tsinghua University Cardiff University

3D scene modeling has long been a fundamental problem in computer graphics and computer vision. With the popularity of consumer-level RGB-D cameras,there is a growing interest in digitizing real-world indoor 3D scenes. However,modeling indoor3 D scenes remains a challenging problem because of the complex structure of interior objects and poor quality of RGB-D data acquired by consumer-level *** methods have been proposed to tackle these challenges. In this survey,we provide an overview of recent advances in indoor scene modeling techniques,as well as public datasets and code libraries which can facilitate experiments and evaluation.

关键词： RGB-D camera 3D indoor scenes geometric modeling semantic modeling survey

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Interfacial fusion-enhanced 11 μm-thick gel polymer electrolyte for high-performance lithium metal batteries

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Journal of Energy Chemistry 2024年第11期98卷 58-66页

作者： Ying Jiang Xinyue Hong Peng Huang Jing shi Wen Yan Chao lai School of Chemistry and Materials Science Jiangsu Normal UniversityXuzhou 221116JiangsuChina

In the pursuit of ultrathin polymer electrolyte(<20 μm) for lithium metal batteries, achieving a balance between mechanical strength and interfacial stability is crucial for the longevity of the ***, 11 μm-thick gel polymer electrolyte is designed via an integrated electrode/electrolyte structure supported by lithium metal anode. Benefiting from an exemplary superiority of excellent mechanical property, high ionic conductivity, and robust interfacial adhesion, the in-situ formed polymer electrolyte reinforced by titanosiloxane networks(ISPTS) embodies multifunctional roles of physical barrier, ionic carrier, and artificial protective layer at the interface. The potent interfacial interactions foster a seamless fusion of the electrode/electrolyte interfaces and enable continuous ion transport. Moreover, the built-in ISPTS electrolyte participates in the formation of gradient solid-electrolyte interphase(SEI) layer, which enhances the SEI's structural integrity against the strain induced by volume fluctuations of lithium ***, the resultant 11 μm-thick ISPTS electrolyte enables lithium symmetric cells with cycling stability over 600 h and LiFePO_(4) cells with remarkable capacity retention of 96.6% after 800 *** study provides a new avenue for designing ultrathin polymer electrolytes towards stable, safe,and high-energy–density lithium metal batteries.

关键词： Ultrathin gel polymer electrolyte Integrated electrode/electrolyte structure Quasi-solid-state lithium metal battery Solid-electrolyte interphase

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Interconnected Bi_(5)Nb_(3)O_(15)@CNTs network as high-performance anode materials of Li-ion battery

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Rare Metals 2022年第10期41卷 3401-3411页

作者： Xue-Zhong Li Nan Zhang Yu-rong Wu Qin-Zhi lai Yan-rong Zhu Jun-Hong Zhang Ping Cui Ting-Feng Yi School of Materials Science and Engineering Northeastern UniversityShenyang110819China School of Chemistry and Chemical Engineering Anhui University of TechnologyMaanshan243002China Key Laboratory of Dielectric and Electrolyte Functional Material Hebei Province Qinhuangdao066004China Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology College of Chemistry and Chemical EngineeringLiaocheng UniversityLiaocheng252059China

In this work,the facile carbon nanotubes(CNTs) modulation strategy was successfully used to fabricate Bi_(5) Nb_(3) O_(15)@CNTs composites as anode materials for lithium-ion battery by a simple solid-state *** introduction of CNTs does not change the structure of the Bi_(5) Nb_(3) O_(15) materials,the Bi_(5) Nb_(3) O_(15) particles are decorated on a three-dimensional CNTs network,and the high conductive network promotes transfer of electron/ion and relieve the volume change of Bi_(5) Nb_(3) O_(15).The Bi_(5) Nb_(3) O_(15)@CNTs(8 wt%) electrode shows a superior rate capability with charge(discharge) capacities of 490(898.7),379.1(401.6),311.3(326.9),276.5(285.5) and 243.4(252)mAh·g^(-1) at 50,100,200,300 and 500 mA·g^(-1),***,the Bi_(5) Nb_(3) O_(15) only shows charge(discharge) capacities of 431(772.6),278.6(309.9),193.1(213.7),160.8(171.1),129.9(139.1) mAh·g^(-1) at the corresponding rates,*** excellent rate capability of Bi_(5) Nb_(3) O_(15)@CNTs can be ascribed to the homogeneous distribution of Bi_(5) Nb_(3) O_(15) particles in the CNTs conductive network and the enhancement of ***,the CNTs modulation can be considered as an effective strategy to enhance electrochemical performances of Bi_(5) Nb_(3) O_(15) materials.

关键词： Bi_(5)Nb_(3)O_(15) Carbon nanotubes(CNTs) Anode Li-ion battery(LIB)

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Geochronology and Geochemistry of the Granites from the Longtoushan Hydrothermal Gold Deposit in the Dayaoshan Area,Guangxi:Implication for Petrogenesis and Mineralization

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Journal of Earth Science 2019年第2期30卷 309-322页

作者： Lihua Qian Jianqing lai Lifang Hu rong Cao shilong Tao Bei You Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationSchool of Geosciences and Info-physicsCentral South University

The gold mineralization in the Longtoushan hydrothermal gold deposit is concentrated within the contact zone of the granitic complex. Whole rock geochemistry and in-situ U-Pb and Hf isotopic data were used to constrain the genesis and age of the granites and related Cu-Au mineralization in the Longtoushan Deposit. The granites mainly consist of the granite porphyry, rhyolite porphyry, porphyritic granite and quartz porphyry. LA-ICP-MS U-Pb dating of zircons from the granite porphyry, rhyolite porphyry and quartz porphyry indicates that they intruded from ca. 94 to 97 Ma. These intrusions exhibit similar trace element characteristics, i.e., right-dipping REE patterns, depletion of Ba, Sr, P and Ti, and enrichment of Th, U, Nd, Zr and Hf. The εHf(t) values of zircons from the granite porphyry, rhyolite porphyry and quartz porphyry range from-26.81 to-8.19,-8.12 to-5.33, and-8.99 to-5.83, respectively, suggesting that they were mainly derived from the partial melting of the Proterozoic crust. The Cu-Au mineralization is mainly related to the rhyolite porphyry and porphyritic granite, respectively. The Longtoushan granites were most likely formed in a post-collisional extensional environment, and the deposit is a part of the Late Yanshanian magmatism related mineralization in the Dayaoshan area and its adjacent areas.

关键词： Longtoushan gold deposit rhyolite porphyry zircon U-Pb dating Hf isotopes petrogenesis Cu-Au mineralization

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