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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

Metal-organic frameworks with dinuclear metal centers for synergistically boosting CO2 photoreduction

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Science China Chemistry 2025年第1期68卷 201-208页

作者： Hui-Feng Wang Wen-Jie Shi yu-Xin Yang Bao-Xia Dong Tong-Bu lu Di-Chang Zhong School of Chemistry and Chemical Engineering Yangzhou University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology

Dinuclear metal synergistic catalysis （DMSC） has been proved powerful in boosting CO2reduction,while this has not been achieved in heterogeneous catalysts with long-range order *** this study,we,by introduction of metal catalytic centers into an indium-based metal-organic framework （MOF）,obtained a series of isostructural In-MOFs,including three MOFs with mononuclear metal catalytic center （M-In）,three MOFs with dinuclear homometallic catalytic centers （MM-In）,and three MOFs with dinuclear heterometallic catalytic centers (MM’-In,M/M’=Co（II）,Ni（II）,Zn（II）).It was found that all these MOFs can serve as catalysts for photochemical CO2reduction to *** with M-In,the catalytic activities of MM-In were obviously enhanced,and that of MM’-In was further significantly *** example,the CO yield of Co Zn-In reaches a record value of 12,700μmol g-1h-1,which is 4.0,8.1,9.4,and 18.6-fold higher than that of Co Co-In,Zn Zn-In,Co-In,and Zn-In,***,the catalytic activities of Co Ni-In and Ni Zn-In also show different fold increase than those of corresponding dinuclear homometallic and mononuclear metallic *** results of control experiments and theoretical calculation reveal that the higher catalytic activities of MM-In over M-In can be ascribed to the DMSC effect,and the higher catalytic activity of MM’-In over MM-In can be ascribed to the strengthened DMSC *** work reveals the relationship between DMSC effect and bimetal centers in CO2reduction,which provides new insights into the DMSC and paves a new way to design highly active catalysts for photochemical CO2reduction.

关键词： metal-organic frameworks dinuclear metal centers synergistic catalysis CO2 reduction photocatalysis

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用于矢量地图完整性验证的脆弱数字水印算法

计算机工程与应用 2010年第26期46卷 99-101页

作者：郑良斌贾玉禄王群中国地质大学北京100083

分析了矢量地图内容完整性认证的常用方法及矢量地图数字水印研究现状,提出将矢量地图分块,以数据块为计算单位,将水印信息嵌入在矢量地图数据中,不仅能验证矢量地图的完整性,还能将篡改的定位能力精确到数据块,嵌入了水印信息的矢量地... 详细信息

分析了矢量地图内容完整性认证的常用方法及矢量地图数字水印研究现状,提出将矢量地图分块,以数据块为计算单位,将水印信息嵌入在矢量地图数据中,不仅能验证矢量地图的完整性,还能将篡改的定位能力精确到数据块,嵌入了水印信息的矢量地图仍有使用价值,在对数据精度要求极高的情况下,可以通过数据完整性验证提取出原始矢量地图数据,更好地满足一些特殊应用的需求。

关键词：矢量地图脆弱数字水印完整性

Advances in the Development of Gradient Scaffolds Made of Nano‑Micromaterials for Musculoskeletal Tissue Regeneration

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Nano-Micro Letters 2025年第3期17卷 455-500页

作者： Lei Fang Xiaoqi Lin Ruian Xu lu Liu yu Zhang Feng Tian jiao jiao Li jiajia Xue Beijing Laboratory of Biomedical Materials Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China State Key Laboratory of Organic‑Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029People’s Republic of China School of Biomedical Engineering Faculty of Engineering and ITUniversity of Technology SydneySydneyNSW 2007Australia

The intricate hierarchical structure of musculoskeletal tissues,including bone and interface tissues,necessitates the use of complex scaffold designs and material structures to serve as tissue-engineered *** has led to growing interest in the development of gradient bone scaffolds with hierarchical structures mimicking the extracellular matrix of native tissues to achieve improved therapeutic *** on the anatomical characteristics of bone and interfacial tissues,this review provides a summary of current strategies used to design and fabricate biomimetic gradient scaffolds for repairing musculoskeletal tissues,specifically focusing on methods used to construct compositional and structural gradients within the *** latest applications of gradient scaffolds for the regeneration of bone,osteochondral,and tendon-to-bone interfaces are ***,the current progress of testing gradient scaffolds in physiologically relevant animal models of skeletal repair is discussed,as well as the challenges and prospects of moving these scaffolds into clinical application for treating musculoskeletal injuries.

关键词： Gradient scaffolds Musculoskeletal tissues Advanced manufacturing Biomaterials Tissue regeneration

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试论会计监督职能

安阳工学院学报 2005年第3期4卷 93-96页

作者：贾玉禄安阳工学院河南安阳455000

现代会计是一个以提供客观、相关、合意的财务信息为职能的财务信息控制系统。在市场经济条件下,服务于自主经营、自负盈亏企业的会计是为企业内、外部提供决策依据的信息源。会计有两大基本职能,即反映与监督。所谓监督,一是对会计工... 详细信息

现代会计是一个以提供客观、相关、合意的财务信息为职能的财务信息控制系统。在市场经济条件下,服务于自主经营、自负盈亏企业的会计是为企业内、外部提供决策依据的信息源。会计有两大基本职能,即反映与监督。所谓监督,一是对会计工作、会计人员行为的监督,即自我监督;二是对企业经济活动的合法性、合理性的监督。

关键词：会计监督合法性合规性认识与实践

红霉素与阿奇霉素治疗小儿肺炎支原体肺炎的临床研究

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中国临床药理学杂志 2015年第8期31卷 587-589页

作者：陈嘉慧印根权余嘉璐邓力广州市妇女儿童医疗中心呼吸科广州510623

目的评价红霉素、阿奇霉素序贯疗法与单用阿奇霉素治疗小儿肺炎支原体肺炎的临床疗效。方法入选114例小儿肺炎支原体肺炎,并随机分为2组,每组57例。试验组用红霉素25-30 mg·kg^-1每天1次滴注,3-7 d后改口服阿奇霉素10 mg·kg^-1,3 d后... 详细信息

目的评价红霉素、阿奇霉素序贯疗法与单用阿奇霉素治疗小儿肺炎支原体肺炎的临床疗效。方法入选114例小儿肺炎支原体肺炎,并随机分为2组,每组57例。试验组用红霉素25-30 mg·kg^-1每天1次滴注,3-7 d后改口服阿奇霉素10 mg·kg^-1,3 d后停药4 d。对照组口服阿奇霉素10 mg·kg^-1每天1次,5 d后停药7 d,再口服阿奇霉素10 mg·kg^-1,每天1次,3 d后停药4 d。2组均3周为1个疗程,比较2组患儿的临床疗效、临床症状消失时间、住院时间及不良反应发生率。结果治疗后,试验组的总有效率为96.49%,显著高于对照组的77.19%（P〈0.01）;试验组退热时间、止咳时间、湿啰音消失时间及住院时间均明显低于对照组（P〈0.01）;观察组的不良反应发生率为7.02%,对照组为3.51%,差异无统计学意义（P〉0.05）。结论红霉素、阿奇霉素序贯疗法治疗小儿肺炎支原体肺炎的疗效显著。

关键词：红霉素阿奇霉素肺炎支原体肺炎

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试论会计责任与审计责任的区分

安阳工学院学报 2005年第2期4卷 73-76页

作者：贾玉禄安阳工学院河南安阳455000

会计责任和审计责任是两种不同性质的责任,不能相互替代。确定会计责任和审计责任的界限和范围对于区分这两种责任起着十分关键的作用。

关键词：会计责任审计责任界定

Achieving ultralow leakage current in Schottky-MIS cascode anode lateral field-effect diode based on AlGaN/GaN HEMT

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Science China(Information Sciences) 2025年第1期68卷 379-385页

作者： Fangzhou WANG Changhong GAO Guojian DING Cheng yu Zhuocheng WANG Xiaohui WANG Qi FENG Ping yu Peng ZUO Wanjun CHEN Yang WANG Haiqiang jia Hong CHEN Bo ZHANG Zeheng WANG Songshan Lake Materials Laboratory School of Microelectronics Southern University of Science and Technology State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Manufacturing Commonwealth Scientific and Industrial Research Organisation

In this paper,we design and fabricate a Schottky-metal-insulator-semiconductor（MIS） cascode anode GaN lateral field-effect diode（CA-LFED） to achieve ultralow reverse leakage current(ILEAK).The device based on AlGaN/GaN highelectron-mobility-transistor（HEMT） includes a normally-off MIS-controlled channel that is cascoded with a high barrier height Schottky *** reverse bias,the high electric-field is effectively prevented by the normally-off MIS-controlled channel *** with the high barrier height Schottky contact,this feature significantly suppresses the *** by the device fabrication,the CA-LFED with high breakdown voltage（BV）>600 V shows an ultralow ILEAKof 3.6×10-9A/mm as well as a low forward voltage drop（VF） of 2.2 *** performance suggests that the CA-LFED can be a promising candidate for ultralow ILEAKand better VF-ILEAKtrade-off GaN power diode applications.

关键词： Schottky-MIS cascode anode lateral field-effect diode (LFED) ultralow reverse leakage current ($I_{\rm{LEAK}}$) forward drop and reverse leakage trade-off AlGaN/GaN HEMTs

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De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2025年第1期68卷 174-180页

作者： Fan-Xiao Meng Xing-yu Wang Ka lu Ju-Song Yang Fu-Min Zhang Ai-Jun Ma Bao Du Yong-Qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi University

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

关键词： benzofuran atropisomers novel de novo synthetic strategy asymmetric formal [3 + 2] cycladdition Cu/SPDO complex DFT calculations