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GFRF R-CNN:Object Detection Algorithm for Transmission Lines

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Computers, Materials & Continua 2025年第1期82卷 1439-1458页

作者： Xunguang yan Wenrui Wang Fanglin Lu Hongyong Fan bo Wu Jianfeng Yu Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai201210China University of Chinese Academy of Sciences Beijing100049China Jingwei Textile Machinery Co. Ltd.Beijing100176China

To maintain the reliability of power systems,routine inspections using drones equipped with advanced object detection algorithms are essential for preempting power-related *** increasing resolution of drone-captured images has posed a challenge for traditional target detection methods,especially in identifying small objects in high-resolution *** study presents an enhanced object detection algorithm based on the Faster Regionbased Convolutional Neural Network(Faster R-CNN)framework,specifically tailored for detecting small-scale electrical components like insulators,shock hammers,and screws in transmission *** algorithm features an improved backbone network for Faster R-CNN,which significantly boosts the feature extraction network’s ability to detect fine *** Region Proposal Network is optimized using a method of guided feature refinement(GFR),which achieves a balance between accuracy and *** incorporation of Generalized Intersection over Union(GIOU)and Region of Interest(ROI)Align further refines themodel’s *** results demonstrate a notable improvement in mean Average Precision,reaching 89.3%,an 11.1%increase compared to the standard Faster *** highlights the effectiveness of the proposed algorithm in identifying electrical components in high-resolution aerial images.

关键词： Faster R-CNN transmission line object detection GIOU GFR

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某新型空投用缓冲装置的缓冲效果计算

机械设计与制造 2011年第11期 6-8页

作者：朱延波陈卫空军工程大学工程学院西安710038

针对物资在空投过程中有(无)某新型"空投用缓冲装置"和有(无)着陆倾斜角的四种不同撞击土壤情况,对该装置落地时缓冲板的缓冲系数和缓冲能量建立了非线性回归模型,并将其与地锚、缓冲气囊的缓冲效果进行叠加,最后分别运用动静法分别求... 详细信息

针对物资在空投过程中有(无)某新型"空投用缓冲装置"和有(无)着陆倾斜角的四种不同撞击土壤情况,对该装置落地时缓冲板的缓冲系数和缓冲能量建立了非线性回归模型,并将其与地锚、缓冲气囊的缓冲效果进行叠加,最后分别运用动静法分别求解出有(无)缓冲装置时的空投物资落地冲击力并对之进行了对比,为该装置的设计优化提供了理论依据。经计算可知:空投用缓冲装置可以有效降低空投时的冲击力;装置的缓冲效果会随着空投物资质量的增加而下降。

关键词：缓冲效果动静法地锚非线性回归

Deciphering Water Oxidation Catalysts:The Dominant Role of Surface Chemistry over Reconstruction Degree in Activity Promotion

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Nano-Micro Letters 2025年第3期17卷 340-354页

作者： Li An Jianyi Li Yuanmiao Sun Jiamin zhu Justin zhu Yeow Seow Hong Zhang Nan Zhang Pinxian Xi * Zhichuan JXu Chun‑Hua yan State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceFrontiers Science Center for Rare IsotopesCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000People’s Republic of China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore Faculty of Materials Science and Energy Engineering Institute of Technology for Carbon NeutralityShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Key Laboratory of Electromagnetic Materials and Devices National Center for International Research On Photoelectric and Energy MaterialsSchool of Materials and EnergyElectron Microscopy CenterYunnan UniversityKunming 650091People’s Republic of China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030People’s Republic of China Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and ApplicationsPKU‑HKU Joint Laboratory in Rare Earth Materials and Bioinorganic ChemistryPeking UniversityBeijing 100871People’s Republic of China

Water splitting hinges crucially on the availability of electrocatalysts for the oxygen evolution *** surface reconstruction has been widely observed in perovskite catalysts,and the reconstruction degree has been often correlated with the activity ***,a systematic study on the roles of Fe substitution in activation of perovskite LaNiO_(3)is *** substituting Fe content influences both current change tendency and surface reconstruction ***_(0.9)Fe_(0.1)O_(3)is found exhibiting a volcano-peak intrinsic activity in both pristine and reconstructed among all substituted perovskites in the LaNi_(1-x)Fe_(x)O_(3)(x=0.00,0.10,0.25,0.50,0.75,1.00)*** reconstructed LaNi_(0.9)Fe_(0.1)O_(3)shows a higher intrinsic activity than most reported NiFe-based ***,density functional theory calculations reveal that Fe substitution can lower the O 2p level,which thus stabilize lattice oxygen in LaNi0.9Fe0.1O3 and ensure its long-term ***,it is vital interesting that activity of the reconstructed catalysts relied more on the surface chemistry rather than the reconstruction *** effect of Fe on the degree of surface reconstruction of the perovskite is decoupled from that on its activity enhancement after surface *** finding showcases the importance to customize the surface chemistry of reconstructed catalysts for water oxidation.

关键词： Oxygen evolution reaction Perovskite oxides Doping Activation and reconstruction

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实际收入与主观收入对生命质量影响的研究

中国全科医学 2017年第11期20卷 1364-1369页

作者：李桐朱燕波严辉李彦妮林琳北京中医药大学管理学院北京市100029 中日友好医院人事处北京市100029

目的探讨实际收入、主观收入与生命质量的关系,并分析两者对生命质量的影响。方法采用便利抽样法,选取3批调查数据作为样本,分别是2012年6月北京同仁医院体检人员1 023例、2012年9月安徽中医药大学第一附属医院健康管理中心体检人员610... 详细信息

目的探讨实际收入、主观收入与生命质量的关系,并分析两者对生命质量的影响。方法采用便利抽样法,选取3批调查数据作为样本,分别是2012年6月北京同仁医院体检人员1 023例、2012年9月安徽中医药大学第一附属医院健康管理中心体检人员610例和2013年2月广东省中医院珠海医院体检人员595例。收集调查对象一般资料,采用简明健康状况调查问卷(SF-36)对其生命质量进行调查,采用多元线性回归分析实际收入、主观收入对生命质量的影响。结果回收有效问卷1 527份,有效回收率为68.54%。1 527例调查对象中家庭人均月收入6 000元267例(17.48%);主观收入情况一般者1 190例(77.93%),较好者217例(14.21%),较差者120例(7.86%)。不同家庭人均月收入者生理功能(PF)、生理职能(RP)、躯体疼痛(BP)、一般健康(GH)、生理领域(PCS)、精力(VT)、社会功能(SF)、情感职能(RE)、精神健康(MH)和心理领域(MCS)得分比较,差异均有统计学意义(P6 000元者PF、RP、BP、GH、PCS、SF、MCS得分均高于0.05);主观收入情况是SF-36 PCS、MCS得分的影响因素(P<0.05)。结论实际收入高的人群生命质量并不一定更好,主观收入较好的人群生命质量得分较高。与实际收入相比,主观收入真正影响生命质量。

关键词：生命质量收入主观收入

近10年成本-效用分析中EQ-5D与SF-6D应用现状的文献计量研究:基于PubMed数据库

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中国卫生经济 2014年第3期33卷 12-15页

作者：史会梅朱燕波北京中医药大学管理学院北京100029

目的:分析欧洲5维健康量表(EQ-5D)与6维健康调查短表(SF-6D)在成本-效用分析研究中的应用现状。方法:以PubMed数据库为数据源对2003—2012年发表的相关文献进行文献计量分析。结果:近10年应用EQ-5D与SF-6D进行成本-效用分析的文献量未... 详细信息

目的:分析欧洲5维健康量表(EQ-5D)与6维健康调查短表(SF-6D)在成本-效用分析研究中的应用现状。方法:以PubMed数据库为数据源对2003—2012年发表的相关文献进行文献计量分析。结果:近10年应用EQ-5D与SF-6D进行成本-效用分析的文献量未呈一定的增长趋势,主要的发表语言为英语,主要国家为英国。已形成6种核心期刊,核心作者尚未形成。文献所涉及的疾病分布广泛,且主要是运动系统和疼痛类疾病。效用绝大多数采用质量调整生命年表示,成本-效用分析的评价对象主要集中于药物、手术和健康干预3种。结论:应用EQ-5D与SF-6D进行成本-效用分析的文献及文献所研究内容分布范围均较广,虽然已经呈现出集中趋势,但未形成核心,有待于相关领域学者开展广泛的研究。

关键词： EQ-5D SF-6D 文献计量学成本-效用分析

Trinuclear gold-catalyzed site-selective alkylation of peptides

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Science China Chemistry 2025年第1期68卷 249-256页

作者： Qing-Yun Fang Chengyihan Gu Yinghan Chen Wencheng yan Yong Liang Weipeng Li Chengjian zhu Jie Han Jin Xie State Key Laboratory of Coordination Chemistry 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 has always been a challenging issue. The selective alkylation of peptides can alter the biological activity and physical properties of molecules, and it has gained significant research interest. We herein disclose an intriguing gold-catalyzed alkylation of peptides using bench-stable unactivated alkyl bromides under photoredox catalysis. A wide range of structurally diverse primary, secondary and tertiary alkyl bromides serve as effective coupling partners to precisely connect with the α-C(sp3)–H in glycine residue of peptides. This protocol demonstrates an exceptionally broad scope for alkyl halides 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 further enhance its synthetic practicality. In addition, mechanistic studies and density functional theory(DFT) calculations reveal an inner-sphere and subsequent outersphere single electron transfer(SET) mechanism.

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

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The potential mechanism and clinical application value of remote ischemic conditioning in stroke

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Neural Regeneration Research 2025年第6期20卷 1613-1627页

作者： Yajun zhu Xiaoguo Li Xingwei Lei Liuyang Tang Daochen Wen bo Zeng Xiaofeng Zhang Zichao Huang Zongduo Guo The First Affiliated Hospital of Chongqing Medical University ChongqingChina

Some studies have confirmed the neuroprotective effect of remote ischemic conditioning against stroke. Although numerous animal researches have shown that the neuroprotective effect of remote ischemic conditioning may be related to neuroinflammation, cellular immunity, apoptosis, and autophagy, the exact underlying molecular mechanisms are unclear. This review summarizes the current status of different types of remote ischemic conditioning methods in animal and clinical studies and analyzes their commonalities and differences in neuroprotective mechanisms and signaling pathways. Remote ischemic conditioning has emerged as a potential therapeutic approach for improving stroke-induced brain injury owing to its simplicity, non-invasiveness, safety, and patient tolerability. Different forms of remote ischemic conditioning exhibit distinct intervention patterns, timing, and application range. Mechanistically, remote ischemic conditioning can exert neuroprotective effects by activating the Notch1/phosphatidylinositol 3-kinase/Akt signaling pathway, improving cerebral perfusion, suppressing neuroinflammation, inhibiting cell apoptosis, activating autophagy, and promoting neural regeneration. While remote ischemic conditioning has shown potential in improving stroke outcomes, its full clinical translation has not yet been achieved.

关键词： Akt apoptosis autophagy cerebral perfusion cerebral vascular stenosis clinical transformation hemorrhagic stroke ischemic stroke neuroinflammation neuroprotection Notch1 PI3K remote ischemic conditioning stroke

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中医阳虚质相关影响因素的研究

中医杂志 2007年第12期48卷 1113-1115,1124页

作者：朱燕波王琦姚实林北京中医药大学管理学院基础医学院安徽中医学院

目的探索中医阳虚质的主要相关影响因素。方法以我国东西南北中5个地域的自然人群和体检中心15岁以上、获得知情同意的2230人为调查对象(包括健康者和患者)实施横断面现场调查。采用标准化的中医体质量表测评阳虚质得分,应用单因素分析... 详细信息

目的探索中医阳虚质的主要相关影响因素。方法以我国东西南北中5个地域的自然人群和体检中心15岁以上、获得知情同意的2230人为调查对象(包括健康者和患者)实施横断面现场调查。采用标准化的中医体质量表测评阳虚质得分,应用单因素分析和多元逐步回归分析法分析主要影响因素。结果根据多元逐步回归分析入选了7个因素,按影响程度大小依次是:患有慢性疾病、女性、不喜运动、喜热饮食、体型偏瘦、喜清淡饮食、出生后非母乳喂养。结论疾病因素、性别差异、运动习惯、饮食因素、体型因素是阳虚质的主要相关影响因素。

关键词：阳虚质中医体质量表多元逐步回归分析,影响因素

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多接收机局域机场监视系统的完好性算法

上海交通大学学报 2011年第7期45卷 1041-1045,1049页

作者：王志鹏张军朱衍波薛瑞北京航空航天大学电子信息工程学院北京100191

现有局域机场监视系统(LAM)采用单接收机,健壮性和完好性较差.基于多接收机LAM(MLAM)概念,从地面监测站和机载用户两方面讨论了其完好性.在地面监测站方面,研究了多接收机伪距校正数校验方法;通过地面监测保护级最小原则选择最佳可见卫... 详细信息

现有局域机场监视系统(LAM)采用单接收机,健壮性和完好性较差.基于多接收机LAM(MLAM)概念,从地面监测站和机载用户两方面讨论了其完好性.在地面监测站方面,研究了多接收机伪距校正数校验方法;通过地面监测保护级最小原则选择最佳可见卫星组合,减小了机载用户的计算负担.在机载用户方面,考虑系统完好性、连续性和可用性的前提下进行漏检系数计算,精确估计了机载用户保护级,改善了系统的整体性能.实验结果表明,与LAM相比,MLAM的精度和完好性指标都得到了提高.

关键词：卫星导航局域增强系统局域机场监视系统