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全膝关节置换术后康复基础上有无针刺对改善膝关节功能的影响:一项系统评价和meta分析

World Journal of Acupuncture-Moxibustion 2024年第2期34卷 95-102页

作者：褚文明曹原李世永吴琼高希言河南中医药大学郑州450008 河南中医药大学第三附属医院郑州450003

Objective:To assess the effect and safety of acupuncture on the base of rehabilitation for knee function after total knee ***:Relevant articles were collected from CNKI,Sinomed,Wanfang,VIP,Cochrane Library,Medline and *** search was conducted by using a combination of subject terms and free *** data were analyzed by Revman 5.4 software,and the included studies were evaluated in compliance with the Cochrane Collaboration's tool for assessing risk of bias in randomized ***:A total of 10 studies of randomized controlled trial(RCT) were included,with 785 participants involved,of which,393 cases in experiment group and 392 cases in control *** interventions were electroacupuncture in 4 RCTs,filiform needling in 4 RCTs and transcutaneous electrical acupoint stimulation in 2 ***-analysis results showed that,compared with rehabilitation alone,acupuncture combined with rehabilitation improved the score of Hospital for Special Surgery(HSS)(MD=4.27,95%CI=[2.77,5.78],Z=5.58,P<0.00001),increased the range of motion(ROM) of the knee(MD=3.09,95%CI-[1.47,4.70],Z=3.75,P<0.001),and decreased the postoperative score of visual analogue scale(VAS)(MD=-0.53,95%CI=[-0.74,-0.33],Z=5.04,P<0.00001),but the difference in VAS score between groups only indicated statistical significance,without clinical *** sensitivity analysis showed the results were *** subgroup analysis,the stability of VAS score was relatively poorer in electroacupuncture group and filiform needle group,which may be associated with the differences in waveform of electroacupuncture and trial ***:Compared with rehabilitation alone,acupuncture in combination with rehabilitation could effectively improve the knee function for the patients after total knee arthroplasty.

关键词： Acupuncture Rehabilitation Total knee arthroplasty Systematic review Meta-analysis

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Research on Virtual Coupled Train Control Method Based on GPC & VAPF

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Chinese Journal of Electronics 2022年第5期31卷 897-905页

作者： cao yuan YANG Yaran MA Lianchuan WEN Jiakun State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong University School of Electronic and Information Engineering Beijing Jiaotong University

Improving transportation efficiency is an eternal research hotspot in rail transit system. In recent years, the train operation control method based on virtual coupling has attracted the attention of many *** method of train coordination and anti-collision control is not only the key to realize the virtual coupling of train, but also the key to ensure the safety of train operation. Therefore, based on the existing research, a virtual coupled train dynamics model with nonlinear dynamics is established. Then, the parameters of the operation process model of the nonlinear virtual coupled train are identified by the recursive least squares method based on realtime data, which is applied to the variable parameter artificial potential field(VAPF) for parameter identification.A fusion controller based on feature-based generalized model prediction(GPC) and VAPF is used to control the virtual coupled train and prevent collision. Finally, the validity of the proposed method is verified by using real high-speed railway data.

关键词： Virtual coupling train control system Generalized model predictive control Nonlinear system Artificial potential field (APF)

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Condition Monitoring for Railway Point Machines Based on Sound Analysis and Support Vector Machine

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Chinese Journal of Electronics 2020年第4期29卷 786-792页

作者： SUN Yongkui cao yuan XIE Guo WEN Tao School of Electronic and Information Engineering Beijing Jiaotong University National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong University Shaanxi Key Laboratory of Complex System Control and Intelligent Information Processing Xi'an University of Technology

Railway point machines(RPMS) are one of the key equipments in the railway system to switch different routes for the *** monitoring for RPMs is a vital measure to keep train operation safe and *** convenience and low cost into consideration, a novel intelligent condition monitoring method for RPMs based on sound analysis is ***-domain and frequency-domain features are obtained,and normalized using z-score standardization method to eliminate the influences of different *** particle swarm optimization(BPSO) is utilized to select the most significant discrimination feature *** effects of the selected optimal features are verified using Support vector machine(SVM), 1-Nearest neighbor(1 NN), Random forest(RF), and Naive Bayes(NB).Experiment results indicate SVM performs best on identification accuracy and computing cost compared with the other three *** identification accuracies on normal switching and reverse switching processes reach100% and 99.67%, respectively, indicating the feasibility of the proposed method.

关键词： Condition monitoring Sound analysis Railway point machines(RPMs) Binary particle swarm optimization(BPSO) Support vector machine(SVM)

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Design and Analysis of Double One Out of Two with a Hot Standby Safety Redundant Structure

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Chinese Journal of Electronics 2020年第3期29卷 586-594页

作者： WEN Jiakun cao yuan MA Lianchuan DU Siqi School of Electronic and Information Engineering Beijing Jiaotong University National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong University

In the rail transit system, the running foundation of the computer control system is required to be highly reliable, available and safe. A redundant system structure of double one out of two with a hot standby applied to the safety computer platform of the train control system is proposed in this paper. Considering the common cause failure, fault diagnosis rate, repair rate and switching success rate, the Markovian approach is adopted for modeling four safety redundant structures,including two out of three, double one out of two, one out of two with a hot standby and double one out of two with a hot standby. The calculation of the failure rate and PFH values is carried out with MATLAB to evaluate the reliability, safety and influencing factors of each structure. The final conclusion is that double one out of two with a hot standby structure can be best in the aspect of both reliability and safety with appropriate DC and β parameters.

关键词： Markov model Safety redundant structure Reliability Safety Double one out of two with a hot standby

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Coverage Adaptive Optimization Algorithm of Static-Sensor Networks for Target Discovery

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Chinese Journal of Electronics 2019年第2期28卷 398-403页

作者： XIAO Shuo LI Tianxu TANG Chaogang cao yuan School of Computer Science and Technology China University of Mining and Technology School of Electronic and Information Engineering Beijing Jiaotong University

Sensor networks contain a large number of nodes that can perceive changes of external environment,which makes sensor networks particularly suitable for target tracking and discovery. In practical applications,once the sensor nodes are arranged, it is difficult to move them. We focus on analysing the target discovery ability of static-sensor networks. We divided the target into two kinds, one is persistent target and the other is instantaneous target. We investigate target discovery probability and discovery delay with different nodes density, sensing range and duty cycle. Energy saving is still the most important problem for the applications of sensor networks. Balancing target discovery capability and lifetime of the whole sensor network is necessary. Based on the theoretical analysis, we propose a coverage adaptive optimization algorithm that significantly prolongs the life of sensor networks. Simulation results show the advantage of coverage adaptive optimization algorithm over previous proposed methods.

关键词： Sensor networks Energy efficiency Network lifetime Discovery latency

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Research on High Precision Tracking Method of Guided Transport Vehicle Based on Autonomous Combination Positioning

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Chinese Journal of Electronics 2020年第4期29卷 779-785页

作者： cao yuan ZHANG Shuangshuang YANG Guizhi WEN Tao National Engineering Research Center of Rail Transportation Operation and Control System Beijing Jiaotong University School of Electronic and Information Engineering Beijing Jiaotong University

Guided transport vehicle(GTV) uses satellite positioning technology, lidar, and highperformance video sensors to achieve real-time positioning and tracing, these devices cost a *** addition, GTV shifts left and right during operation due to there is no fixed orbits *** is very important to detect the lateral offset in real time to ensure the accurate tracing of the vehicle along the dotted *** at the above issues, this paper proposes a low-cost high precision tracing method for GTV based on integrated positioning,high resolution estimation of the vehicles positioning information is implemented by Cubature Kalman filters(CKF) with a loosely coupled mode based on GPS/SINS in this method; Considering that GTV has a fixed driving route, a two-stage map matching algorithm based on Hidden Markov model(HMM) is proposed, which further improves the accuracy; The lateral offset distance is detected based on the positioning information, which provides theoretical support for the subsequent control of the precise operation of the *** algorithm’s feasibility has been verified by real vehicle experiments,the results show that the proposed algorithm achieves a centimeter-level positioning accuracy, and when the lateral offset distance is not less than 65 cm, the detection accuracy of the lateral offset distance is more than 92%.

关键词： Positioning and tracing CKF Map matching Lateral offset detection

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硝酸铵细度对铵胺炸药性能的影响

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火炸药学报 2024年第4期47卷 316-323页

作者：孙彦臣黄文尧梁昊李天浩牛草原胡洁方高杰安徽理工大学化工与爆破学院安徽淮南232001

为研究硝酸铵细度对铵胺炸药性能的影响,以六亚甲基四胺作为可燃剂制备了一种胶状炸药—铵胺炸药;对多孔粒状硝酸铵进行破碎,分别过20、40、60、80目筛区分不同的细度,对混合各细度硝酸铵颗粒铵胺炸药基质的黏度、炸药的爆速和猛度进行... 详细信息

为研究硝酸铵细度对铵胺炸药性能的影响,以六亚甲基四胺作为可燃剂制备了一种胶状炸药—铵胺炸药;对多孔粒状硝酸铵进行破碎,分别过20、40、60、80目筛区分不同的细度,对混合各细度硝酸铵颗粒铵胺炸药基质的黏度、炸药的爆速和猛度进行了测试,对炸药进行了储存稳定性实验。结果表明,当硝酸铵细度由0~20目增至80目以上时,铵胺炸药基质的混合均匀性增加,基质的初始黏度由92828mPa·s增至148637mPa·s,基质黏度随着剪切时间增加而逐渐降低,铵胺炸药基质属于触变性流体;炸药的爆速由3569m/s增至4316m/s,猛度由26.00mm增至30.50mm,能量释放更集中,对周围介质的的冲击力提升;分别储存2d和120d的铵胺炸药,爆速降幅均小于5%;说明硝酸铵细度的增加可以提高铵胺炸药的爆轰性能和储存稳定性。

关键词：爆炸力学硝酸铵细度铵胺炸药黏度爆速猛度工业炸药六亚甲基四胺

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基于前视声呐图像的AUV目标识别与跟踪

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舰船科学技术 2024年第5期46卷 115-119页

作者：郑鹏曹园山张超王健徐令令中国船舶科学研究中心、水动力学国家重点实验室江苏无锡214082

声呐图像由于水体不均匀、边界不规则以及声呐设备本身性能的限制,导致图像噪声明显、亮度不均、分辨率低,使得水下AUV装备在使用前视声呐进行水下目标检测时难度较大。针对该问题,基于m750d声呐探测获得的AUV声呐数据,进行了数据提取... 详细信息

声呐图像由于水体不均匀、边界不规则以及声呐设备本身性能的限制,导致图像噪声明显、亮度不均、分辨率低,使得水下AUV装备在使用前视声呐进行水下目标检测时难度较大。针对该问题,基于m750d声呐探测获得的AUV声呐数据,进行了数据提取、高斯滤波处理、扇形映射处理,并采用Jet映射对声呐灰度图像进行了伪彩色映射提高数据标注速度和精度,制作获得了4组2 500张声呐图像的AUV目标检测数据集;采用YOLOv4-tiny目标检测算法开展AUV目标检测研究,研究结果表明该方法在该数据集上表现优秀,mAP@0.50达到94.17%,FPS在22帧左右,说明该轻量级网络在水下AUV目标识别与跟踪应用上具有较好的应用价值。

关键词：前视声呐 Jet映射 AUV目标检测数据集 YOLOv4-tiny目标检测

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基于CatBoost-NSGA-Ⅲ算法的盾构姿态预测与优化

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中国安全科学学报 2024年第8期34卷 69-77页

作者：吴贤国刘俊曹源雷宇李士范覃亚伟华中科技大学土木与水利工程学院湖北武汉430074 武汉华中科大检测科技有限公司湖北武汉430074

为解决盾构掘进过程中因盾构前倾变形、蛇形、轴线偏离及纠偏等影响施工安全性与高效性的问题,提出一种将类别型特征梯度提升(CatBoost)与第三代非支配排序遗传算法(NSGA-Ⅲ)相结合的盾构姿态多目标优化方法;以贵阳地铁为例,选取22个影... 详细信息

为解决盾构掘进过程中因盾构前倾变形、蛇形、轴线偏离及纠偏等影响施工安全性与高效性的问题,提出一种将类别型特征梯度提升(CatBoost)与第三代非支配排序遗传算法(NSGA-Ⅲ)相结合的盾构姿态多目标优化方法;以贵阳地铁为例,选取22个影响因素作为输入参数,利用CatBoost算法建立输入参数与盾构姿态之间的非线性映射函数关系,采用随机森林(RF)算法评价输入参数的重要性;以盾构姿态绝对值最小化为目标,构建CatBoost-NSGA-Ⅲ多目标优化模型,并通过案例分析验证所提方法的适用性和有效性。结果表明:采用CatBoost算法训练工程实测数据得到的预测模型具有较高的精度,5个盾构姿态目标的R^(2)范围为0.916~0.943;所研发的CatBoost-NSGA-Ⅲ盾构姿态多目标优化方法,可使盾构姿态得到显著优化,整体改进的平均值为53.34%。

关键词：类别型特征梯度提升(CatBoost) 第三代非支配排序遗传算法(NSGA-Ⅲ) 盾构姿态多目标优化重要性排序

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半夏白术天麻汤通过AngⅡ/TGF-β1/smad通路干预合并血脂异常自发性高血压病大鼠心肌纤维化

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中华中医药学刊 2024年第9期42卷 120-123,I0015-I0019页

作者：英哲铭宋囡曹媛贾连群杨关林辽宁中医药大学辽宁沈阳110847

目的探究半夏白术天麻汤通过调控AngⅡ/TGF-β1/smad通路对高脂喂饲的自发性高血压病大鼠心肌纤维化的影响。方法选取10只Wistar-Kyoto(WKY)大鼠和48只自发性高血压病大鼠(SHR),将SHR大鼠随机分为6组,每组8只,分别为对照组(WKY-ND)、高... 详细信息

目的探究半夏白术天麻汤通过调控AngⅡ/TGF-β1/smad通路对高脂喂饲的自发性高血压病大鼠心肌纤维化的影响。方法选取10只Wistar-Kyoto(WKY)大鼠和48只自发性高血压病大鼠(SHR),将SHR大鼠随机分为6组,每组8只,分别为对照组(WKY-ND)、高血压病组(SHR-ND)、高脂高血压病组(SHR-HF)、半夏白术天麻汤低(BDL)、中(BDM)、高(BDH)剂量组和西药(Telmisartan)组。所有大鼠适应性喂养1周后,给予WKY-ND组和SHR-ND组大鼠普通饲料,其余各组给予高脂饲料,喂养8周。造模成功后,给予WKY-ND组、SHR-ND组和SHR-HF组等体积生理盐水,其余各组给予药物干预12周。之后进行大鼠心肌组织取材,采用苏木素-伊红染色(HE)观察大鼠心肌细胞形态、采用马松(Masson)染色观察心肌组织胶原纤维的含量;ELISA法检测血清中AngⅡ、IL-6、TNF-α、NO、ox-LDL、LOX-1、ROS的含量;免疫组织化学方法检测心肌组织α-SMA、ColⅠ、ColⅢ的表达;采用Western blot检测心肌组织TGF-β1、p-smad2、p-smad3、MMP2、TIMP1蛋白表达水平。结果HE、Masson染色显示,给药后心肌细胞大小更均匀,形态更完整,细胞核清晰,胶原纤维面积减少,以半夏白术天麻汤高剂量组给药后改变更为明显;与SHR-ND组相比,SHR-HF组大鼠血清中AngⅡ、IL-6、TNF-α、ox-LDL、LOX-1、ROS水平明显升高,NO水平明显降低;与SHR-HF组相比,各给药组AngⅡ、IL-6、TNF-α、ox-LDL、LOX-1、ROS水平明显降低,NO水平明显升高;与SHR-ND组相比,SHR-HF组大鼠心肌组织中ColⅠ、ColⅢ、α-SMA蛋白水平显著升高;与SHR-HF组相比,各给药组ColⅠ、ColⅢ、α-SMA蛋白水平显著降低;与SHR-ND组相比,SHR-HF组大鼠心肌组织中p-smad2、p-smad3、MMP2的蛋白水平显著升高,TIMP1的蛋白水平显著降低。与SHR-HF组相比,BD组大鼠心肌组织中的TGF-β1、p-smad2、p-smad3、MMP2显著降低,TIMP1显著升高。结论半夏白术天麻汤可通过调节AngⅡ/TGF-β1/smad信号通路,影响高脂喂养SHR大鼠心肌纤维化。

关键词：半夏白术天麻汤自发性高血压病大鼠心肌纤维化血脂异常 TGF-β1/smad通路

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