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微型电脑应用 2007年第1期23卷 52-53,42页

作者：李永斌翁惠玉上海交通大学

本文主要论述网络层传播技术中的组播技术在建立虚拟企业所带来的好处。文中先对组播技术作一个简单的介绍,然后具体讨论组播技术在虚拟企业中的运用。

关键词：组播虚拟企业

基于IEEE 802．11e EDCA的接纳控制方案

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微型电脑应用 2007年第2期23卷 11-14页

作者：周莉芳翁惠玉上海交通大学计算机科学与工程系

随着无线局域网的快速发展,人们对服务质量提出了迫切的要求,IEEE 802．11e协议应运而生,为QoS的实施提供了参考标准。EDCA是802．11e中实现QoS的分布式机制,本文基于EDCA,提出了一整套接纳控制方案和EDCA参数调节机制。本方案QoS参数... 详细信息

随着无线局域网的快速发展,人们对服务质量提出了迫切的要求,IEEE 802．11e协议应运而生,为QoS的实施提供了参考标准。EDCA是802．11e中实现QoS的分布式机制,本文基于EDCA,提出了一整套接纳控制方案和EDCA参数调节机制。本方案QoS参数考虑全面,实现简单,而且能够运用在全分布的ad hoc网络中。

关键词： QoS EDCA 接纳控制流量整形

Method for Estimating the State of Health of Lithium-ion Batteries Based on Differential Thermal Voltammetry and Sparrow Search Algorithm-Elman Neural Network

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Energy Engineering 2025年第1期122卷 203-220页

作者： yu Zhang Daoyu Zhang TiezhouWu School of Electrical and Electronic Engineering Hubei University of TechnologyWuhan430068China

Precisely estimating the state of health(SOH)of lithium-ion batteries is essential for battery management systems(BMS),as it plays a key role in ensuring the safe and reliable operation of battery ***,current SOH estimation methods often overlook the valuable temperature information that can effectively characterize battery aging during capacity ***,the Elman neural network,which is commonly employed for SOH estimation,exhibits several drawbacks,including slow training speed,a tendency to become trapped in local minima,and the initialization of weights and thresholds using pseudo-random numbers,leading to unstable model *** address these issues,this study addresses the challenge of precise and effective SOH detection by proposing a method for estimating the SOH of lithium-ion batteries based on differential thermal voltammetry(DTV)and an SSA-Elman neural ***,two health features(HFs)considering temperature factors and battery voltage are extracted fromthe differential thermal voltammetry curves and incremental capacity ***,the Sparrow Search Algorithm(SSA)is employed to optimize the initial weights and thresholds of the Elman neural network,forming the SSA-Elman neural network *** validate the performance,various neural networks,including the proposed SSA-Elman network,are tested using the Oxford battery aging *** experimental results demonstrate that the method developed in this study achieves superior accuracy and robustness,with a mean absolute error(MAE)of less than 0.9%and a rootmean square error(RMSE)below 1.4%.

关键词： Lithium-ion battery state of health differential thermal voltammetry Sparrow Search Algorithm

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中性聚合物键合剂对硝胺推进剂相界面的作用

推进技术 2001年第4期22卷 335-340页

作者：吴文辉黎玉钦张聪罗明树北京理工大学化工与材料学院北京100081

采用溶胀比测试和原位拉伸扫描电镜观测等手段 ,研究了中性聚合物键合剂 (NPBA)对硝胺填充固体推进剂界面作用的影响。结果表明 ,NPBA能在硝胺颗粒周围形成一层高模量中间相 ,有效地解决了“脱湿”问题 ,提高了推进剂的拉伸性能。

关键词：硝胺推进剂溶胀比测试原位拉伸扫描电镜固体推进剂中性聚合物键合剂 NPBA 拉伸性能相界面高模量中间相脱湿

后交叉韧带胫骨附着点撕脱骨折:关节镜治疗中的材料、植入物及内固定技术

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中国组织工程研究 2025年第4期29卷 872-880页

作者：余铭王文贵州医科大学贵州省贵阳市550004 暨南大学附属广州市红十字会医院广东省广州市510220

背景:治疗后交叉韧带胫骨附着点撕脱骨折的最佳手术技术仍值得商榷。随着关节镜手术的应用与成熟,它在后交叉韧带胫骨附着点撕脱骨折的诊疗中有很大前景。目的:综述关节镜技术在后交叉韧带胫骨附着点撕脱骨折治疗中的应用与进展,包括不... 详细信息

背景:治疗后交叉韧带胫骨附着点撕脱骨折的最佳手术技术仍值得商榷。随着关节镜手术的应用与成熟,它在后交叉韧带胫骨附着点撕脱骨折的诊疗中有很大前景。目的:综述关节镜技术在后交叉韧带胫骨附着点撕脱骨折治疗中的应用与进展,包括不同关节镜治疗方法、手术入路、胫骨隧道设计、缝合材料选择以及内固定植入物选择等。方法:通过计算机对中国知网、PubMed、Web of Science及ScienceDirect等数据库中的相关文献进行检索,检索时间为2003年1月至2023年11月,中文检索词为“后交叉韧带,后十字韧带,撕脱骨折,关节镜”;英文检索词为“posterior cruciate ligament,avulsion,fracture,tibia,arthroscopic,operation,fixation,treatment”。共纳入97篇文献进行综述。结果与结论:关节镜技术提供了一种可靠的治疗方式来治疗后交叉韧带胫骨附着点撕脱骨折。根据入路、缝合材料类型以及用于缝合的入路和胫骨隧道数量等不同,关节镜技术可以分为关节镜下缝线固定结合自体移植物增强重建、关节镜下多交叉带缝合桥固定、关节镜下高强度缝线固定以及关节镜下直接前后缝合悬吊固定等几类。在各种研究中,常用的临床结果评估指标包括关节活动度、Lysholm评分、国际膝关节文献委员会评分及KT-2000关节测量仪差等,研究显示关节镜手术后末次随访时上述指标检测结果较术前显著改善,影像学随访结果显示关节镜手术都取得了令人满意的结果。在随访过程中,接受关节镜技术治疗后的各类交叉韧带胫骨附着点撕脱骨折患者都未出现严重并发症,例如创伤性关节炎、神经血管损伤、围手术期伤口感染、血栓形成以及骨折不愈合等。

关键词：后交叉韧带胫骨撕脱骨折关节镜手术缝合材料内固定治疗

互动健康教育和单向教育在小儿骨折患者护理中的效果对比

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中国当代医药 2018年第14期25卷 180-182页

作者：陆文辉郝玉田广东省深圳市儿童医院外科门诊广东深圳518026

目的对比互动健康教育和单向教育在小儿骨折患者护理中的效果。方法选取2015年7月~2016年10月我院收治的小儿骨折患者120例,采用随机数字表法将其分为对照组、观察组,每组60例。其中对照组患者进行单向教育,观察组患者进行互动健康教育... 详细信息

目的对比互动健康教育和单向教育在小儿骨折患者护理中的效果。方法选取2015年7月~2016年10月我院收治的小儿骨折患者120例,采用随机数字表法将其分为对照组、观察组,每组60例。其中对照组患者进行单向教育,观察组患者进行互动健康教育,观察记录两组患者的相关临床指标数据。结果观察组患儿的住院时间显著短于对照组,住院费用显著少于对照组(P<0.05);患儿家长的健康知识掌握情况显著高于对照组,差异均有统计学意义(P<0.05)。观察组患儿的主动进行功能锻炼的比例明显高于对照组;患儿功能锻炼时的配合程度显著高于对照组,差异均有统计学意义(P<0.05)。观察组患儿术后并发症的发生率显著低于对照组,差异有统计学意义(P<0.05)。观察组患儿家长对临床护理的满意度显著高于对照组,差异有统计学意义(P<0.05)。结论互动健康教育在小儿骨折患者护理中的效果显著,可有效缩短患儿的住院时间和减少患儿的住院费用,在改善患儿家长对相关健康的知识掌握情况、提升患儿的主动性和配合程度等方面都表现出明显优势,因而值得在临床上进行推广应用。

关键词：互动健康教育单向教育小儿骨折

MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： yu‑Ze Wang yu‑Chang Wang Ting‑Ting Liu Quan‑Liang Zhao Chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

Effect of non-stationary accretion on spectral state transitions:An example of a persistent neutron star LMXB 4U 1636–536

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Research in Astronomy and Astrophysics 2018年第3期18卷 91-98页

作者： hui Zhang wen-Fei yu Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical ObservatoryChinese Academy of Sciences

Observations of black hole and neutron star X-ray binaries show that the luminosity of the hard-to-soft state transition is usually higher than that of the soft-to-hard state transition,indicating additional parameters other than mass accretion rate are required to interpret spectral state *** has been found in some individual black hole or neutron star soft X-ray transients that the luminosity corresponding to the hard-to-soft state transition is positively correlated with the peak luminosity of the following soft state. In this work,we report the discovery of the same correlation in the single persistent neutron star low mass X-ray binary（LMXB） 4 U 1636–536 based on data from the All Sky Monitor（ASM） on board RXTE,the Gas Slit Camera（GSC） on board MAXI and the Burst Alert Telescope（BAT） on board Swift. We also found such a positive correlation holds in this persistent neutron star LMXB in a luminosity range spanning about a factor of four. Our results indicate that non-stationary accretion also plays an important role in driving X-ray spectral state transitions in persistent accreting systems with small accretion flares,which is much less dramatic compared with the bright outbursts seen in many Galactic LMXB transients.

关键词： accretion accretion disks - X-rays binaries - stars neutron

Endoscopy-assisted lightweight diagnosis system based on transformers for colon polyp detection

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Optoelectronics Letters 2025年第1期21卷 57-64页

作者： FAN Weiming yu Jiahui JU Zhaojie School of Automation and Electrical Engineering Shenyang Ligong University Department of Biomedical Engineering Zhejiang University School of Computing University of Portsmouth

The integration of endoscopy has significantly propelled the diagnosis and treatment of gastrointestinal diseases, with colonoscopy establishing itself as the primary method for early diagnosis and preventive care in colorectal cancer(CRC). Although deep learning holds promise in mitigating missed polyp rates, modern endoscopy examinations pose additional challenges, such as image blurring and atomizing. This study explores lightweight yet powerful attention mechanisms, introducing the spatial-channel transformer(SCT), an innovative approach that leverages spatial channel relationships for attention weight calculation. The method utilizes rotation operations for inter-dimensional dependencies, followed by residual transformation, encoding inter-channel and spatial information with minimal computational overhead. Extensive experiments on the CVC-Clinic DB polyp detection dataset, addressing endoscopy pitfalls, underscore the superiority of our SCT over other state-of-the-art methods. The proposed model maintains high performance, even in challenging scenarios.

关键词： Endoscopy

A thermodynamic model on predicting density of medium-Mn steels with experimental verification

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Journal of Iron and Steel Research International 2017年第11期24卷 1078-1084页

作者： Guo-hui Shen Peng-yu wen Hal-wen Luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

A new model on predicting the density of hot-rolled multi-phased medium-Mn steel has been presen ted on the basis of thermodynamic calculations. This is an integrated model, which includes one for calculating the retained austenite （RA） fraction and the other for volume expansion during the aus tenite-to martensite transformation, because both of them are key parameters for calculating the den- sity of steel at ambient temperature. The existing empirical equations for calculating Mx temperature and lattice constants of both martensite and austenite have been all rcassessed by the XRD measure ments on the microstructures of seven hot-rolled medium-Mn steels. Finally, the densities ot seven steels were calculated merely from compositions and compared with the measured ones. The differ ence between them is no more than 1 %, suggesting that the presented model should be of good value in designing the low density steels.

关键词： Density Medium Mn steel Retained austenite fraction Volume expansion Transformation