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全球化背景下经典文化教育的价值取向

湖南行政学院学报 2009年第1期 55-56页

作者：陈业桃湖南文理学院湖南常德415000

全球化对我国教育的冲击是深刻的,经典文化教育是应对挑战所必需的选择之一。经典文化具有时代性、开放性和包容性,对成就一个人以及提高整个国民素质都有重要的意义与价值。经典文化教育在学校教育应有所作为。

关键词：全球化经典文化价值

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Profile of *** chen

Science China(Life Sciences) 2024年第10期67卷 2062-2063页

作者： chen, Songlin Yellow Sea Fisheries Res Inst Qingdao Peoples R China

For decades,*** has been engaged in fish germplasm preservation,sex control and research focusing on molecular breeding for disease *** discovered the first sex-specific molecular marker of fish(chen et al.,2007),deciphered the first fish genome(Chinese tongue sole)in China,revealed the sex determination mechanism in fish(chen et al.,2014),and created molecular sex control *** also discovered the molecular mechanism of metamorphosis in flatfish(Shao et al.,2017)and developed China's first fish disease-resistant breeding gene chip,“YUXIN No.1”.

关键词： technology breeding

Sensitivity Analysis and Design Optimization of Heat Transfer with Phase-change

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Sensitivity Analysis and Design Optimization of Heat Transfe...

Effect of Reclamation on the Groundwater-Lake Water Interaction in chen Lake

The Sixth World Congress on Computational Mechanics in Conjunction with the Second Asian-Pacific Congress on Computational Mechanics

作者： Yuanxian Gu~*, yetao Zhou, Biaosong chen State Key Laboratory of Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, China

The design optimization and sensitivity analysis methods for the problems of transient heat transfer with phase change have been discussed in the paper. On the basis of phase-change temperature field solution with the finite element, time difference, and equivalent heat capacity methods, the numerical method to compute the first-order derivatives of temperature with respect to design variables is proposed. Two computational schemes, the direct method and the adjoint method are presented and their characteristics have been discussed. The optimization model and algorithm are proposed for the transient temperature filed with phase change. The software platform employed in the paper is JIFEX which is a system of structural finite element analysis and design optimization. The numerical examples are given to illustrate the accuracy of sensitivity analysis and the effectiveness of design optimization.

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Journal of Earth Science 2024年第3期35卷 1083-1086页

作者： Kun Lei Teng Ma Liuzhu chen Zhenxing Li Yu chen School of Environmental Studies State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan 430078China

0 INTRODUCTION To relieve the short supply of suitable land for residing,cultivating,and commerce,it is accepted to reclaim land from lakes,river estuaries,and coastal regions in many countries(Mancini et al.,2020).The large-scale reclamation activities have an irreversible effect on the mico-geomorphology and hydrodynamic system of seasonally flooded areas(Zhang et al.,2019;Yu et al.,2018).For example,coastal regions reclaimed extended the groundwater flow paths,as well as created groundwater level rise,resulting in water-logging in the reclaimed area(Hu et al.,2008).Similar changes in groundwater flow systems may alter groundwater-lake water interactions,and it can ultimately affect the water cycle in the lake ***,such detailed studies are presently *** addition,natural exchanges between the lake and groundwater systems can be strongly affected by physical hydrological processes(Javadzadeh et al.,2020),chemical properties(Kamtchueng et al.,2015),and bioto behavior(Hancock et al.,2005).

关键词： groundwater coastal logging

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表面肌电图在脑瘫手术中的应用

中华神经外科杂志 2014年第11期30卷 1157-1160页

作者：苗素华马羽陈业涛陈莹王世杰张玉琪清华大学玉泉医院神经外科北京100049

目的分析患者手术前后下肢肌电活动的变化,探讨表面肌电检测技术在神经外科手术治疗痉挛型脑瘫中的应用.方法对218例痉挛型脑瘫患者行神经外科治疗,其中周围神经缩窄术171例,选择性腰骶段脊神经后根切断术47例.采集患者表面肌电信号,... 详细信息

目的分析患者手术前后下肢肌电活动的变化,探讨表面肌电检测技术在神经外科手术治疗痉挛型脑瘫中的应用.方法对218例痉挛型脑瘫患者行神经外科治疗,其中周围神经缩窄术171例,选择性腰骶段脊神经后根切断术47例.采集患者表面肌电信号,时域法分析患者肌电信号的均方根（RMS）,改良Aswoah痉挛量表（MAS）评估肌张力,徒手肌力检查法（MMT）评估肌力.方差分析比较患者术前和术后RMS的变化,Spearman等级相关进行RMS与MAS和MMT的相关性分析.结果随访病例203例,失访15例.随访期限22～30个月.表面肌电信号比较发现：被动活动时,患者术后内收肌、股四头肌和小腿三头肌的RMS均较术前减低,差异有统计学意义（均P＜0.05）,随访期间也较术前显著减低,差异有统计学意义（均P ＜0.05）;主动收缩时,术后内收肌和小腿三头肌的RMS与术前比较差异无统计学意义（均P＞0.05）,而术后股四头肌的RMS较术前明显减低,差异有统计学意义（均P＜0.05）,但是随访期间内收肌、股四头肌和小腿三头肌的RMS与术前比较差异无统计学意义（均P＞0.05）.MAS评分分析：内收肌组术后痉挛缓解率为91％（318/350）,随访期间为98％（343/350）;股四头肌组术后痉挛缓解率为82％（161/197）,随访期间为95％（187/197）;小腿三头肌组术后痉挛缓解率为93％（348/374）,随访期间为99％（370/374）.MMT评分分析结果：内收肌组术后肌力减低9％（31/350）,随访期间肌力增加23％（80/350）;股四头肌组术后肌力减低21％（41/197）,随访期间增加19％（37/197）;小腿三头肌组术后肌力减低18％（67/374）,随访期间肌力增加29％（108/374） .MAS、MMT和RMS相关性分析显示：MAS、MMT与RMS相关性差异具有统计学意义（P＜0.05）.结论表面肌电检测技术作为一种无创检测手段能够客观评价痉挛型脑瘫的临床疗效;神经外科手术治疗后患者双下肢痉挛肌肉的肌张力明显减低,肌力无明显减低.

关键词：脑瘫表面肌电图神经外科脊神经后根周围神经

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基于灵敏度的热传导辨识问题求解方法

土木工程学报 2002年第3期35卷 94-98页

作者：顾元宪周业涛陈飚松林巍大连理工大学

本文采用灵敏度分析和优化方法求解热传导参数辨识问题。根据测量点已知温度值 ,将测量点的计算温度值与测量温度值之差平方和作为优化问题的目标函数 ,将待识别的热传导参数作为设计变量 ,极小化目标函数得到设计变量最优值就是真实的... 详细信息

本文采用灵敏度分析和优化方法求解热传导参数辨识问题。根据测量点已知温度值 ,将测量点的计算温度值与测量温度值之差平方和作为优化问题的目标函数 ,将待识别的热传导参数作为设计变量 ,极小化目标函数得到设计变量最优值就是真实的识别参数值。优化问题采用序列线性规划算法求解 ,基于温度场灵敏度分析构造线性规划问题。数值计算结果表明 ,本文方法求解热传导参数辨识这类反问题的效率和精度很高。

关键词：灵敏度热传导参数辨识反问题优化

Meridional deflection of global eddy propagation derived from tandem altimetry: Mechanism and implication

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Science China Earth Sciences 2024年第3期67卷 811-825页

作者： Ge chen Xiaoyan chen Frontiers Science Center for Deep Ocean Multispheres and Earth System School of Marine TechnologyOcean University of ChinaQindao 266100China Laboratory for Regional Oceanography and Numerical Modeling Laoshan LaboratoryQindao 266237China

A common view on meridional deflection of eddy propagation is poleward for cyclones and equatorward for anticyclones. This widely accepted polarity-sensitive pattern has been increasingly undermined given that it is systematically violated on both zonal and regional scales as recently reported. Here, we approach the problem by exploring these violations in terms of eddy effects of spatiotemporal geostrophy, thermal fading, and flow dragging, yielding the following main conclusions.(1) The polarity-dependent deflection discrepancy is a pseudo feature resulting from a biased fit to the normalized eddy tracks which are spatially asymmetric(though azimuthally symmetric) between the two signs;Instead, the primary pattern of eddy deflection appears to be geographically correlated and polarity independent.(2) Geostrophic adjustment plays a critical role in defining the meridional movement of an eddy. Specifically, a consistent poleward(equatorward) trajectory bending of spatially(temporally) ageostrophic eddies is observed irrespective of their polarity.(3) The mechanism of eddy deflection is also determined by its zonal propagation direction. Westward propagating eddies are substantially affected by thermal fading, while opposite ones by flow dragging. A realistic and comprehensive understanding of eddy deflection mechanisms serves as a significant contribution to the prediction of eddy trajectory, and the protection of ocean environment.

关键词： Mesoscale eddies Eddy propagation Eddy meridional deflection Satellite observation Geostrophic adjustment

A refined representation method of the particle size distribution curve based on grading entropy

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Particuology 2024年第5期88卷 302-311页

作者： Xing Li Qun chen Zhaozhao Liu cheng Zhou chen Wang chen chen State Key Laboratory of Hydraulics and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China

The particle size distribution(PSD)curve is an important expression of the basic properties of the *** characteristic parameters such as median particle size D_(50),effective particle size D_(10),and some combinations of characteristic parameters can only represent some points of the PSD curve,failing to represent all information of the PSD *** this paper,a fraction characteristic parameter F that could reflect the fraction size variation of the PSD curve was introduced based on grading *** a new presentation method of the A-B-F three parameters was proposed for a refined representation of the PSD *** was found that the newly constructed model not only better represents the differences in the width of PSD curves but also has a higher sensitivity than the A-B two-parameter model proposed by Lő*** PSD curves with similar distributions,the new presentation method has a higher degree of discrimination than that of the D_(50)-C_(u)-C_(c) three-parameter or the four-parameter combination G_(c) proposed by ***,the application of this new method in describing the spatial nonuniformity distribution of depositions and predicting the soil hydraulic conductivity was *** research results can provide a reference for the refined representation of PSD curves.

关键词： Grading entropy Particle size distribution curve Refined representation

Track correlation algorithm based on CNN-LSTM for swarm targets

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Journal of Systems Engineering and Electronics 2024年第2期35卷 417-429页

作者： chen Jinyang WANG Xuhua chen Xian Research Institute for National Defense Engineering Academy of Military SciencesLuoyang 471023China Information Engineering University Zhengzhou 450001China School of Computer Science and Technology Xidian UniversityXi’an 710071China

The rapid development of unmanned aerial vehicle(UAV) swarm, a new type of aerial threat target, has brought great pressure to the air defense early warning system. At present, most of the track correlation algorithms only use part of the target location, speed, and other information for *** this paper, the artificial neural network method is used to establish the corresponding intelligent track correlation model and method according to the characteristics of swarm ***, a route correlation method based on convolutional neural networks (CNN) and long short-term memory (LSTM)Neural network is designed. In this model, the CNN is used to extract the formation characteristics of UAV swarm and the spatial position characteristics of single UAV track in the formation,while the LSTM is used to extract the time characteristics of UAV swarm. Experimental results show that compared with the traditional algorithms, the algorithm based on CNN-LSTM neural network can make full use of multiple feature information of the target, and has better robustness and accuracy for swarm targets.

关键词： track correlation correlation accuracy rate swarm target convolutional neural network(CNN) long short-term memory(LSTM)neural network