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数学的实践与认识 2024年第5期54卷 249-256页

作者：曹宏举郭巧丽大连外国语大学软件学院辽宁大连116044 大连东软信息学院计算机科学与技术系辽宁大连116023

正交矩阵是线性代数的一个重要概念,文章较系统地梳理了正交矩阵的测度保持不变性,并结合压缩感知理论,介绍了正交矩阵测度保持不变性在高光谱图像处理中的应用.

关键词：正交矩阵测度高光谱图像处理

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肥胖与心血管病危险因素的关系

中华内分泌代谢杂志 2000年第1期16卷 2-3页

作者： jul.,AJH

基于YOLOv8的高压电缆接头关键部位目标检测方法

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电力设备管理 2024年第8期 186-188页

作者：王冠军曾松峰赵居利上海思敦信息科技有限公司

本文以优秀的目标检测模型YOLOv8为基线,在neck网络中添加坐标注意力以提高多尺度特征融合效果,对反应力锥、内半导电层、导体和接管四个关键部位进行目标检测。在高压电缆接头数据集上的大量实验表明,本文提出的模型mAP@0.5-0.95值最... 详细信息

本文以优秀的目标检测模型YOLOv8为基线,在neck网络中添加坐标注意力以提高多尺度特征融合效果,对反应力锥、内半导电层、导体和接管四个关键部位进行目标检测。在高压电缆接头数据集上的大量实验表明,本文提出的模型mAP@0.5-0.95值最高可达93.6%,mAP@0.9值可达88.2%,检测精度满足实际应用的要求。

关键词：机器视觉目标检测故障诊断 YOLO

The ARMA model’s pole characteristics of Doppler signals fromthe carotid artery and their classification application

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Chinese Journal of Acoustics 2002年第4期21卷 317-324页

作者： CHEn Xi WAnG Yuanyuan ZHAnG Yu WAnG Weiqi (Department of Electronic Engineering, Fudan University Shanghai 200433)Received Jun. 11, 2001 Revised jul. 4, 2001 Department of Electronic Engineering Fudan University Shanghai200433

In order to diagnose the cerebral infarction, a classification system based on the ARMA model and BP (Back-Propagation) neural network is presented to analyze blood flow Doppler signals from the carotid artery. In this system, an ARMA model is first used to analyze the audio Doppler blood flow signals from the carotid artery. Then several characteristic parameters of the pole’s distribution are estimated. After studies of these characteristic parameters’ sensitivity to the textcolor cerebral infarction diagnosis, a BP neural network using sensitive parameters is established to classify the normal or abnormal state of the cerebral vessel. With 474 cases used to establish the appropriate neural network, and 52 cases used to test the network, the results show that the correct classification rate of both training and testing are over 94%. Thus this system is useful to diagnose the cerebral infarction.

关键词： ARMA In The ARMA model s pole characteristics of Doppler signals fromthe carotid artery and their classification application

Ordinary Workers and Industrial Relations in a new World Order

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Sociology Study 2014年第8期4卷 728-737页

作者： niels jul.nielsen University of Copenhagen Denmark

Taking its point of departure from a nATO （north Atlantic Treaty Organization） conference held in Copenhagen in 1953, this papers begins by tracing the foundation of the powerful political role that labor organizations held during a significant part of the twentieth century. At the conference, ＂labor＂ was emphasized as occupying a ＂key role＂ in the struggle of Western societies to withstand the challenge of communism--military alone could not achieve this objective. Since around 1990, this has fundamentally changed and the paper explores the contemporary situation through an ethnographic study--involving fieldwork at both workplaces and private homes--of Polish migrant laborers participating in the Danish labor market. Firstly, it is shown how the Polish laborers, due to the lower costs they represent, benefit from the new opportunities. Secondly, the paper illustrates how the trade union, though uneasy with the downward pressure on wage and working conditions that the Polish represent, prioritizes the organization of workers in order to maintain some degree of control over the labor market. Finally, the question is raised how the EU （European Union） is able to navigate two contrasting concerns： the urge both to create more cross-border competition and to uphold an image of a ＂social Europe＂ which might be key to maintain cohesion and legitimacy.

关键词： Cold war neo-liberalism work life industrial relations EU (European Union) enlargement

The characteristic of power flow in broad band dynamic vibration absorber

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Chinese Journal of Acoustics 2002年第4期21卷 360-364页

作者： WAnG Minqing SHEnG Meiping SUn Jincai LIU Yi(College of Marine Engineering, northwestern Polytechnical University Xi’an 710072)Received May 15, 2001 Revised jul. 6, 2001 College of Marine Engineering Northwestern Polytechnical University Xi'an710072

DVA (dynamic vibration absorber) is good for restrain of the resonance vibration in low frequency, especially under the condition that there are only one mode or two modes in a frequency band. It seems rather difficult to control the resonance vibration of elastic structures in high frequency, since usually there are so many modes in high frequency band. The broad band DVA is brought forward to reduce the resonance vibration of elastic structures. The broad band DVA is designed on the basis of the characteristic of power flow in structure in this paper. The broad band DVA is effective on absorbing the resonance vibration power flow of the most important modes. The ability of absorbing vibration for the broad band DVA is analyzed in detail. The results obtained in this paper provide a basis for the optimization design of the broad band DVA and the optimization positions on structures.

关键词： DVA The characteristic of power flow in broad band dynamic vibration absorber flow

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Application of the Largest Movable Mold EMS on a Large Section Size CC Bloom

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Journal of Iron and Steel Research International 2012年第S2期19卷 900-904页

作者： OH Kyung-shik LEE Joo-dong KIM Sung-jul.SIEBO Kunstreich POSCO Danieli -Rotelec

The largest movable mold EMS developed by POSCO in collaboration with Daineli-Rotelec for improving internal quality of a large CC bloom is being used at a large size bloom caster of POSCO since *** quality of carbon steel CC bloom of 700×700 mm~2 section size with the mold EMS was much improved compared with without the mold *** zone ratio increased from 50%to 100%and the grain of equiaxed structure became globular and *** shrinkage was also much reduced by applying the movable mold EMS.

关键词： the largest movable mold EMS a large section size CC bloom top shrinkage

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nature-Based Therapy for People Suffering from Post-Concussion Syndrome—A Pilot Study

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