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高校传播力与影响力提升路径研究——以南京审计大学为例

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山东纺织经济 2024年第1期41卷 33-36页

作者：程玉祥南京审计大学江苏南京211815

随着国际化进程发展,各个高校在自身传播力与影响力建设方面进行了探索。高校应该进一步加强思想重视,充分利用信息化手段,开展国际化建设等渠道,实现高校的发展及传播力与影响力提升。

关键词：高校传播力影响力国际化

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基于阻抗模型的玻璃棉声学参数反演方法研究

声学技术 2024年第1期43卷 90-97页

作者：程宇翔刘学文熊鑫忠庞金祥上海工程技术大学机械与汽车工程学院上海201620 上海普信科技有限公司上海200335

为了能准确获取玻璃棉材料的声学参数,文章对玻璃棉声学参数在不同阻抗模型下的声学参数进行了反演。采用了厚度分别为22 mm和44 mm的玻璃棉样本实测吸声曲线及各声学参数,选取四种常用阻抗模型,通过遗传算法(Genetic Algorithm,GA)对... 详细信息

为了能准确获取玻璃棉材料的声学参数,文章对玻璃棉声学参数在不同阻抗模型下的声学参数进行了反演。采用了厚度分别为22 mm和44 mm的玻璃棉样本实测吸声曲线及各声学参数,选取四种常用阻抗模型,通过遗传算法(Genetic Algorithm,GA)对玻璃棉材料进行声学参数的反演,并选择反演效果最优的模型进行敏感性分析。比较各参数反演结果的误差比,并对比不同模型描述的吸声曲线与测试曲线的一致性,最后量化并比较Johnson-Champoux-Allard(JCA)模型中各参数对吸声系数的影响程度。研究表明,使用GA结合JCA模型或Johnson-Champoux-Allard-Lafarge(JCAL)模型反演的参数值与测试值误差较小;JCA模型适用于玻璃棉材料的声学参数反演,模型中流阻率和曲折度的敏感性较高,反演过程需保证其精确度。

关键词：吸声系数阻抗模型遗传算法参数反演敏感性分析

Uniform MnO2 nanostructures supported on hierar- chically porous carbon as efficient electrocatalysts for rechargeable Li-O2 batteries

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Nano Research 2015年第1期8卷 156-164页

作者： Xiaopeng Han Fangyi cheng chengcheng Chen yuxiang Hu Jun Chen Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Collaborative InnovationCenter of Chemical Science and Engineering Nankai University Tianjin 300071 China

Through in situ redox deposition and growth of MnO2 nanostructures on hierarchically porous carbon （HPC）, a MnOR/HPC hybrid has been synthesized and employed as cathode catalyst for non-aqueous Li-O2 batteries. Owing to the mild synthetic conditions, MnO2 was uniformly distributed on the surface of the carbon support, without destroying the hierarchical porous nanostructure. As a result, the as-prepared MnO2/HPC nanocomposite exhibits excellent Li-O2 battery performance, including low charge overpotential, good rate capacity and long cycle stability up to 300 cycles with controlling capacity of 1,000 mAh·g^-1. A combination of the multi-scale porous network of the shell-connected carbon support and the highly dispersed MnO2 nanostructure benefits the transportation of ions, oxygen and electrons and contributes to the excellent electrode performance.

关键词： lithium-oxygen batteries manganese oxide nanocomposite catalyst oxygen electrochemistry

ArcGIS-based evaluation of geo-hazards at Yaozhou County,Shaanxi,China

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Journal of Rock Mechanics and Geotechnical Engineering 2013年第4期5卷 330-334页

作者： yuxiang cheng Jun Zhang Jianbing Peng School of Geology Engineering and Geomatics Chang'an University Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education Chang'an University

In conventional susceptibility evaluation of geo-hazards,there are some limits,such as unreasonable division of evaluated region,difficulty in quantifying evaluation indicators,time-consuming *** address these problems,we try to employ the software ArcGIS to evaluate geo-hazards *** study area of Yaozhou County is automatically divided into 3562 *** on the spatial overlay analysis function of ArcGIS,quantitative evaluation of geo-hazards susceptibility is implemented in the study area,and the geo-hazards susceptibility zoning is *** is observed that the evaluation results match well with field investigations.

关键词： Geo-hazards susceptibility ArcGIS Conventional susceptibility evaluation Yaozhou area

Initiation Mechanism of Loess Mudflows by Flume Experiments

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Journal of Earth Science 2022年第5期33卷 1166-1178页

作者： Penghui Ma Jianbing Peng Jianqi Zhuang Xinghua Zhu Cong Liu yuxiang cheng Zuopeng Zhang Key Laboratory of Western China Mineral Resources and Geological Engineering College of Geological Engineering and Surveying of Chang’an UniversityXi’an710054China Xi’an Engineering Investigation and Design Research Institute China Nonferrous Metals Industry Co.Ltd.Xi’an710054China

The structure of loess is loose,and the shear strength of loess drops sharply after contact with ***,loess mudflows have become a common geological disaster on the Chinese Loess *** order to study the initiation mode and mechanism of loess mudflows,in this study,seven sets of flume experiments were designed by controlling the slope angle and rainfall *** results show that(1)when the slope angle is between 10°and 20°,there are two initiation mechanisms of loess mudflows:mudflow(large scale)and retrogressive toe sliding,and mudflow(small-scale)and retrogressive toe sliding.(2)The main method by which water infiltrates into the soil accumulation is mainly vertical infiltration,which is not affected by the slope angle and the seepage direction of the accumulation soil.(3)The liquefaction of loess is the root cause of loess *** infiltrates into the area with an uneven density and a large amount of water accumulates in this ***,the water content of the loess increases and the pore water pressure increases quickly and cannot dissipate in time,so the loess liquefies and the liquefacted area continues to spread and become ***,loess mudflows(large scale)*** increase in pore water pressure was captured in the seven sets of ***,the order of the rising positions in the accumulation were *** requires us to carry out tracking of the particle displacement inside the soil and the spatial changes in the internal structure of the soil in future research.

关键词： flume tests loess mudflow loess liquefaction initiation modes initiation mechanism engineering geology

基于3种水质指数方法的鄱阳湖五河水质分析与评价

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人民珠江 2024年第7期45卷 84-91页

作者：叶方琪计勇惠源章晨晖成玉祥南昌工程学院水利与生态工程学院江西南昌330099

为了研究鄱阳湖五大水系的污染现状,采用灰色关联法、单因子评价法和综合污染指数评价法,选取溶解氧、高锰酸盐指数、氨氮、总氮和总磷5个评价因子,对赣江、信江、抚河、修河和饶河水质进行了分析评价。结果表明研究水域水质总体为Ⅰ—... 详细信息

为了研究鄱阳湖五大水系的污染现状,采用灰色关联法、单因子评价法和综合污染指数评价法,选取溶解氧、高锰酸盐指数、氨氮、总氮和总磷5个评价因子,对赣江、信江、抚河、修河和饶河水质进行了分析评价。结果表明研究水域水质总体为Ⅰ—Ⅲ类,由于农业污水排放导致五河全年总氮含量均过高,同时由于七八月份温度过高导致溶解氧含量过低。运用灰色关联法、单因子评价法和综合污染指数评价法,分析3种方法的优缺点,对比综合分析其评价结果,其中综合污染指数法和灰色关联法得出的结果较为客观,其产生的研究结果可为鄱阳湖五河水污染防治以及水质综合管理提供参考。

关键词：水质评价灰色关联法单因子评价法综合污染指数评价法五河流域

Design of Braunbeck Coil for Nuclear Magnetic Resonance Gyro Magnetic Field Excitation

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Journal of Shanghai Jiaotong university(Science) 2018年第6期23卷 740-745页

作者： WANG Pei LIU Hua cheng Xiang ZHAO Wanliang LI Shaoliang cheng yuxiang School of Electronic Information and Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Navigation and Inertial technology Shanghai Institute of Spaceflight Control TechnologyShanghai 201109China Department of Navigation and Inertial Technology Shanghai Engineer Research Center of InertiaShanghai 201109China Department of Navigation and Inertial technology Shanghai Key Laboratory ofSpace Intelligent Control TechnologyShanghai 201109China

For generating a uniform and steady magnetic field, Helmholtz coil is extensively used in nuclear magnetic resonance gyro(NMRG). Unfortunately, the volume of Helmholtz coil makes it inconvenient to miniaturize NMRG. This study introduces Braunbeck coil that can be used in magnetic field excitation system. Braunbeck coil can produce homogeneous magnetic field within a limit space, and occupy a small volume. In addition, this study presents mathematical expressions that can be used to calculate the area of uniform magnetic field. Experimental test verifies the effectiveness of the proposed design, and the results accord closely with the actual simulation.

关键词： Braunbeck coil finite element simulation Helmholtz coil magnetic field excitation magnetic uniform area nuclear magnetic resonance gyro(NMRG)

Modulating charge separation and transfer for high-performance photoelectrodes via built-in electric field

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1126-1146页

作者： Houyan cheng Peng Liu Yuntao Cui Ru Ya yuxiang Hu Jinshu Wang Key Laboratory of Advanced Functional Materials of Education Ministry of China Faculty of Engineering and ManufacturingBeijing University of TechnologyBeijing 100124China Key Laboratory of Cryogenic Science and Technology and Beijing Key Lab of Cryo-Biomedical Engineering Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Inner Mongolia Academy of Science and Technology Hohhot 010020China

Constructing a built-in electric field has emerged as a key strategy for enhancing charge separation and transfer,thereby improving photoelectrochemical ***,considerable efforts have been devoted to this *** review systematically summarizes the impact of built-in electric fields on enhancing charge separation and transfer mechanisms,focusing on the modulation of built-in electric fields in terms of depth and ***,mechanisms and tuning strategies for built-in electric fields are ***,the state-of-the-art works regarding built-in electric fields for modulating charge separation and transfer are summarized and categorized according to surface and interface ***,current strategies for constructing bulk built-in electric fields in photoelectrodes are explored,and insights into future developments for enhancing charge separation and transfer in high-performance photoelectrochemical applications are provided.

关键词： photoelectrochemical water splitting bulk built-in electric field cation intercalation charge separation and transfer

基于Attention-BiLSTM混合模型的月尺度降水量预测

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人民珠江 2024年第6期45卷 73-81页

作者：成玉祥肖丽英王萍根刘祥周章晨晖南昌工程学院水利与生态工程学院江西南昌330099

降水受到多种气象因素的影响,从而导致降水预测精度不高。针对这个问题,在考虑影响降水的多个气象因素基础上,通过Attention机制赋予各种气象因素不同的权重,结合双向长短期记忆神经网络(BiLSTM),提出了改进的Attention-BiLSTM混合模型... 详细信息

降水受到多种气象因素的影响,从而导致降水预测精度不高。针对这个问题,在考虑影响降水的多个气象因素基础上,通过Attention机制赋予各种气象因素不同的权重,结合双向长短期记忆神经网络(BiLSTM),提出了改进的Attention-BiLSTM混合模型去实现月尺度降水量的预测。以江西省南昌气象站为例,将1989—2018年的逐月降水量与逐月气象因素(气温、蒸发量、气压等)观测资料作为模型输入数据,通过Attention机制识别出各种气象因素的权重,从而提高BiLSTM模型对降水量的预测性能。结果表明:Attention-BiLSTM混合模型可有效地提高降水量预测的精度;通过Attention机制的修正,显著地改善了原有的BiLSTM模型降水量预测值偏低的问题。

关键词：月尺度降水气象因子 Attention机制 BiLSTM 预测性能