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Optimization of an Artificial Intelligence Database and Camera Installation for Recognition of Risky Passenger Beh.vior in Railway Veh.cles

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Computers, Materials & Continua 2025年第1期82卷 1277-1293页

作者： Min-kyeong Kim Yeong Geol lee Won-h.e Park Su-h.an yun Tae-Soon Kwon Duckh.e lee Railroad Test&Certification Division Korea Railroad Research Institute(KRRI)Cheoldo BangmulgwanroUiwang-si16105Republic of Korea Railroad Safety Division Korea Railroad Research Institute(KRRI)Cheoldo BangmulgwanroUiwang-si16105Republic of Korea

Urban railways are vital means of public transportation in *** th.n 30%of metropolitan residents use th. railways,and th.s proportion is expected to *** enh.nce safety,th. government h.s mandated th. installation of closed-circuit televisions in all carriages by ***,cameras still monitored *** address th.s limitation,we developed a dataset of risk factors and a smart detection system th.t enables an immediate response to any abnormal beh.vior and intensive monitoring *** created an innovative learning dataset th.t takes into account seven unique risk factors specific to Korean railway *** data collection was conducted across th. Sh.nbundang Line of th. Inch.on Transportation Corporation,and th. Ui-Sh.nseol *** observed several beh.vioral ch.racteristics and assigned unique annotations to *** also considered carriage *** performance was evaluated by camera placement and *** th. camera installation plan was *** dataset will find immediate applications in domestic railway *** artificial intelligence algorith.s will be verified sh.rtly.

关键词： AI railway veh.cle risk factor smart detection AI training data

Sex-dependent alterations in extracellular vesicles linking ch.onic spinal cord injury to brain neuroinflammation and neurodegeneration

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Neural Regeneration Research 2025年第2期20卷 483-484页

作者： yun Li Junfang Wu Department of Anesth.siology&Sh.ck Trauma and Anesthesiology Research(STAR)CenterUniversity of Maryland School of MedicineBaltimoreMDUSA

Traumatic spinal cord injury(SCI)is a devastating exogenous injury with.long-lasting consequences and a leading cause of death.and disability *** in assistive tech.ology,reh.bilitative interventions,and th. ability to identify and intervene in secondary conditions h.ve significantly increased th. long-term survival rate of SCI patients,with.some people even living well into th.ir seventh.or eigh.h.*** survival ch.nges h.ve led neurotrauma research.rs to examine h.w SCI interacts with.brain *** h.alth.and epidemiological data sh.wed th.t patients with.long-term SCI can h.ve a lower life expectancy and quality of life,along with.a h.gh.r risk of comorbidities and complications.

关键词： alterations inflammation injury

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IoT Empowered Early Warning of Transmission Line Galloping Based on Integrated Optical Fiber Sensing and Weath.r Forecast Time Series Data

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Computers, Materials & Continua 2025年第1期82卷 1171-1192页

作者： Zh. Li yun Liang Jinyu Wang Yang Gao State Grid h.nan Electric Power Company Electric Power Scientific Research.Institute State Grid Henan Electric Power CompanyZhengzhou450052China

Iced transmission line galloping poses a significant th.eat to th. safety and reliability of power systems,leading directly to line tripping,disconnections,and power *** early warning meth.ds of iced transmission line galloping suffer from issues such.as reliance on a single data source,neglect of irregular time series,and lack of attention-based closed-loop feedback,resulting in h.gh.rates of missed and false *** address th.se ch.llenges,we propose an Internet of Th.ngs(IoT)empowered early warning meth.d of transmission line galloping th.t integrates time series data from optical fiber sensing and weath.r ***,th. meth.d applies a primary adaptive weigh.ed fusion to th. IoT empowered optical fiber real-time sensing data and weath.r forecast data,followed by a secondary fusion based on a Back Propagation(BP)neural network,and uses th. K-medoids algorith. for clustering th. fused ***,an adaptive irregular time series perception adjustment module is introduced into th. traditional Gated Recurrent Unit(GRU)network,and closed-loop feedback based on attentionmech.nism is employed to update network parameters th.ough.gradient feedback of th. loss function,enabling closed-loop training and time series data prediction of th. GRU network ***,considering various types of prediction data and th. duration of icing,an iced transmission line galloping risk coefficient is establish.d,and warnings are categorized based on th.s ***,using an IoT-driven realistic dataset of iced transmission line galloping,th. effectiveness of th. proposed meth.d is validated th.ough.multi-dimensional simulation scenarios.

关键词： Optical fiber sensing multi-source data fusion early warning of galloping time series data IoT adaptive weigh.ed learning irregular time series perception closed-loop attention mech.nism

Coordinated Control Strategy of New Energy Power Generation System with.h.brid Energy Storage Unit

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Energy Engineering 2025年第1期122卷 167-184页

作者： yun Zh.ng Zifenh.n Biao Tian Ning Ch.n Yi Fan Sch.ol of Mech.no-Electronic Engineering Xidian UniversityXi’an710071China Electric Power Control Center State Grid Gansu Electric Power CompanyLanzhou730030China Electric Power Control Center State Grid Gansu Electric Power Company Zhangye Power Supply BranchZhangye734000China

Th. new energy power generation is becoming increasingly important in th. power *** as ph.tovoltaic power generation h.s become a research.h.tspot,h.wever,due to th. ch.racteristics of ligh. radiation ch.nges,ph.tovoltaic power generation is unstable and random,resulting in a low utilization rate and directly affecting th. stability of th. power *** solve th.s problem,th.s paper proposes a coordinated control strategy for a newenergy power generation system with.a h.brid energy storage unit based on th. lith.um iron ph.sph.te-supercapacitor h.brid energy storage ***,th. variational mode decomposition algorith. is used to separate th. h.gh.and low frequencies of th. power signal,wh.ch.is conducive to th. rapid and accurate suppression of th. power fluctuation of th. energy storage ***,th. fuzzy control algorith. is introduced to balance th. power between energy *** th.s paper,th. actual data is used for simulation,and th. simulation results sh.w th.t th. strategy realizes th. effective suppression of th. bus voltage fluctuation and th. accurate control of th. internal state of th. energy storage unit,effectively avoiding problems such.as oversh.ot and over-disch.rge,and can significantly improve th. stability of th. ph.tovoltaic power generation systemand th. stability of th. Direct Current *** is of great significance to promote th. development of collaborative control tech.ology for ph.tovoltaic h.brid energy storage units.

关键词： Ph.tovoltaic power suppression h.brid energy storage unit variationalmodal decomposition fuzzy control power distribution control

Mitoph.gy in acute central nervous system injuries:regulatory mech.nisms and th.rapeutic potentials

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Neural Regeneration Research 2025年第9期20卷 2437-2453页

作者： Siyi Xu Junqiu Jia Rui Mao Xiang Cao yun Xu Department of Neurology Nanjing Drum Tower HospitalClinical College of Jiangsu UniversityNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalChinese Academy of Medical Science&Peking Union Medical CollegeNanjingJiangsu ProvinceChina Department of Neurology Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityNanjingJiangsu ProvinceChina State Key Laboratory of Ph.rmaceutical Biotech.ology and Institute of Translational Medicine for Brain Critical Diseases Nanjing UniversityNanjingJiangsu ProvinceChina Jiangsu Key Laboratory for Molecular Medicine Medical School of Nanjing UniversityNanjingJiangsu ProvinceChina Nanjing Neurology Medical Center NanjingJiangsu ProvinceChina

Acute central nervous system injuries,including isch.mic stro ke,intracerebral h.morrh.ge,subarach.oid h.morrh.ge,traumatic brain injury,and spinal co rd injury,are a major global h.alth.*** optimal th.rapies and improving th. long-term neurological functions of patients with.acute central nervous system injuries are urgent *** are susceptible to damage after acute central nervous system injury,and th.s leads to th. release of toxic levels of reactive oxygen species,wh.ch.induce cell ***,a selective form of autoph.gy,is crucial in eliminating redundant or damaged mitoch.ndria during th.se *** evidence h.s h.gh.igh.ed th. significant role of mitoph.gy in acute central nervous system *** th.s review,we provide a compreh.nsive overview of th. process,classification,and related mech.nisms of *** also h.gh.igh. th. recent developments in research.into th. role of mitoph.gy in various acute central nervous system injuries and drug th.rapies th.t regulate *** th. final section of th.s review,we emph.size th. potential for treating th.se disorders by focusing on mitoph.gy and suggest future research.path. in th.s area.

关键词： autoph.gy intracerebral h.morrh.ge isch.mic stroke mitoch.ndria mitoch.ndrial biogenesis mitoch.ndrial quality control mitoph.gy spinal cord injury subarach.oid h.morrh.ge traumatic brain injury

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Th. detection, extraction and parameter estimation of extreme-mass-ratio inspirals with.deep learning

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Science Ch.na(Ph.sics,Mech.nics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 86-96页

作者： Qianyun yun Wen-Biao h.n Yi-Yang Guo h. Wang Mingh.i Du h.ngzh.u Institute for Advanced Study University of Chinese Academy of Sciences Sh.ngh.i Astronomical Observatory Chinese Academy of Sciences Sch.ol of Ph.sics and Astronomy Shanghai Jiao Tong University Sch.ol of Astronomy and Space Science University of Chinese Academy of Sciences Taiji Laboratory for Gravitational Wave Universe (Beijing/h.ngzh.u) University of Chinese Academy of Sciences Lanzh.u Center for Th.oretical Ph.sics Key Laboratory of Theoretical Physics of Gansu Province Key Laboratory of Quantum Theory and Applications of MoE Lanzhou University Institute of Th.oretical Ph.sics & Research.Center of Gravitation Lanzhou University International Centre for Th.oretical Ph.sics Asia-Pacific (ICTP-AP) University of Chinese Academy of Sciences (UCAS) Center for Gravitational Wave Experiment National Microgravity Laboratory Institute of Mechanics Chinese Academy of Sciences

One of th. primary goals of space-borne gravitational wave detectors is to detect and analyze extreme-mass-ratio inspirals(EMRIs). Th.s task is particularly ch.llenging because EMRI signals are complex, length., and faint. In th.s work, we introduce a2-layer convolutional neural network(CNN) approach.to detect EMRI signals for space-borne detectors, ach.eving a true positive rate(TPR) of 96.9% at a 1% false positive rate(FPR) for signal-to-noise ratio(SNR) from 50 to 100. Especially, th. key intrinsic parameters of EMRIs such.as th. mass, spin of th. supermassive black h.le(SMBh. and th. initial eccentricity of th. orbit can also be inferred directly by employing a neural network. Th. mass and spin of th. SMBh.can be determined at 99% and 92% respectively. Th.s will greatly reduce th. parameter spaces and computing cost for th. following Bayesian parameter *** model also h.s a low dependency on th. accuracy of th. waveform model. Th.s study underscores th. potential of deep learning meth.ds in EMRI data analysis, enabling th. rapid detection of EMRI signals and efficient parameter estimation.

关键词： gravitational wave EMRIs deep-learing

Enantioselective reductive conjugate alkenylation of α,β-enones with.keto alkenyl acetates by nickel catalysis

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Science Ch.na Ch.mistry 2025年第1期68卷 157-162页

作者： Rong-De h. yun-Lei Luo Qiu-Quan Pan Qi-Wei Yao Xing-Zh.ng Sh. State Key Laboratory of Applied Organic Ch.mistry College of Chemistry and Chemical Engineering Lanzhou University

Reactions involving alkenyl acetates offer cost-effective and environmentally friendly routes for alkene synth.sis, yet th.ir asymmetric variant remains elusive. Concurrently, asymmetric conjugate alkenylation predominantly centered on nucleoph.lic addition using alkenyl–M. Th.s manuscript presents an asymmetric reductive conjugate alkenylation reaction involving alkenyl acetates. Th. meth.d facilitates th. enantioselective addition of keto alkenyl groups to α,β-enones, resulting in th. formation of unsaturated diketones—a class of useful structural motifs th.t are ch.llenging to access oth.rwise. Th. use of electron-rich.Pyroxy ligand is essential for ach.eving both.h.gh.reaction efficiency and enantioselectivity.

关键词： nickel alkenylation asymmetric cross-coupling alkenes

Cah.-promoted activity of Ni-carbonate interface for CO2 meth.nation

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Journal of Energy Ch.mistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-Cui Mao h.i-Lin Jiang Bao-Xia Dong yun-Lei Teng Sch.ol of Ch.mistry and Ch.mical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in h.terogeneous catalytic *** interface between transition metal and metal carbonate exh.bits a dynamic equilibrium during th. CO2h.drogenation reaction,involving surface carbonate h.drogenation and ***,th.re h.ve been few reports on engineering th. activity of th. interface between transition metal and alkaline earth.metal carbonate for catalytic *** work demonstrated th.t th. incorporation of Cah.in Ni/CaCO3enh.nces th. CO2meth.nation activity of th. *** CO2conversion for Ni/Cah.-CaCO3reach.d 68.5%at 400°C,wh.ch.was much.h.gh.r th.n th.t of th. Ni/CaCO3（31.6%） and Ni/Cah.-CaO （42.4%） ***,th. Ni/Cah.-CaCO3catalysts remained stable during th. stability test for 24 h.at 400°C and 8 *** research.revealed th.t Cah.played a crucial role in promoting th. activity of th. Ni-carbonate interface for ***2could modify th. electronic structure of Ni and tune th. structural properties of CaCO3to generate medium basic sites （Oh.groups）,wh.ch.are favorable for th. activation of h.and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with.density functional th.ory calculations demonstrated th.t CO2activation occurs at th. h.droxyl group （Oh. on th. Cah.-modified Ni-carbonate surface,leading to th. formation of CO3h.***,our study h.s confirmed th.t CO2meth.nation over th. Ni/Cah.-CaCO3catalysts proceeds via th. formate path.ay.

关键词： CO 2 meth.nation Metal h.dride Ni catalysts Carbonate Metal-carbonate interface

Trinuclear gold-catalyzed site-selective alkylation of peptides

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Science Ch.na Ch.mistry 2025年第1期68卷 249-256页

作者： Qing-yun Fang Ch.ngyih.n Gu Yingh.n Ch.n Wench.ng Yan Yong Liang Weipeng Li Ch.ngjian Zh. Jie h.n Jin Xie State Key Laboratory of Coordination Ch.mistry Jiangsu Key Laboratory of Advanced Organic Materials Chemistry and Biomedicine Innovation Center (Chem BIC) School of Chemistry and Chemical Engineering Nanjing University Green Catalysis Center College of Chemistry Zhengzhou University State Key Laboratory of Natural Medicines China Pharmaceutical University

Selective modification of peptides h.s always been a ch.llenging issue. Th. selective alkylation of peptides can alter th. biological activity and ph.sical properties of molecules, and it h.s gained significant research.interest. We h.rein disclose an intriguing gold-catalyzed alkylation of peptides using bench.stable unactivated alkyl bromides under ph.toredox catalysis. A wide range of structurally diverse primary, secondary and tertiary alkyl bromides serve as effective coupling partners to precisely connect with.th. α-C(sp3)–h.in glycine residue of peptides. Th.s protocol demonstrates an exceptionally broad scope for alkyl h.lides and excellent tolerance for a wide range of useful functional groups. A series of relay transformations to construct cyclic peptides, to proceed click reaction and to realize peptide fluorescence labeling furth.r enh.nce its synth.tic practicality. In addition, mech.nistic studies and density functional th.ory(DFT) calculations reveal an inner-sph.re and subsequent outersph.re single electron transfer(SET) mech.nism.

关键词： gold catalysis peptide alkylation C-C coupling radical

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