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THE GAUSS MAP OF SUBMANIFOLDSIN SPACES OF CONSTANT CURVATURE

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Chinese Annals of Mathematics,Series B 1995年第2期16卷 171-176页

作者： ZHOU jianwei SUZHOU UNIV DEPT MATHSUZHOU 215006PEOPLES R CHINA

This paper studies the Gauss map of submanifolds in space forms defined by Willmore andSaleemi. By using Morse functions,it is proved that the degree of Gauss map is the Eulernumber of the *** tight immersions are als... 详细信息

关键词： Space form Parallel displacement Gauss map Morse function Tight immersion.

针刺“老十针”治疗良性阵发性位置性眩晕复位后残余症状的疗效分析

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北京医学 2021年第6期43卷 501-504页

作者：冯玮丁文涛艾建伟杨淑宏靳然王超赵洪霞郭玉峰中国中医科学院广安门医院南区急诊科北京102618 中国中医科学院广安门医院南区针灸科北京102618 中国中医科学院广安门医院南区科研处北京102618 首都医科大学附属北京中医医院耳鼻喉科

目的观察针刺“老十针”治疗良性阵发性位置性眩晕(benign paroxysmal positional vertigo,BPPV)复位后残余症状的临床疗效。方法选取2017年7月至2019年7月中国中医科学院广安门医院南区收治的确诊为BPPV且经手法复位成功的门诊患者120... 详细信息

目的观察针刺“老十针”治疗良性阵发性位置性眩晕(benign paroxysmal positional vertigo,BPPV)复位后残余症状的临床疗效。方法选取2017年7月至2019年7月中国中医科学院广安门医院南区收治的确诊为BPPV且经手法复位成功的门诊患者120例,按随机数字表法分为观察组和对照组,每组60例。观察组在手法复位成功后采用针刺“老十针”治疗,对照组在手法复位成功后予安慰针治疗,疗程均为4周。分别于治疗前、治疗1周、治疗2周、治疗4周记录两组眩晕评定量表(dizziness handicap inventory,DHI)评分和医院焦虑抑郁量表(hospital anxiety and depression scale,HADS)评分;治疗结束后随访3个月,统计两组复发率。结果治疗前,观察组和对照组DHI评分分别为(54.17±17.53)分和(52.86±16.85)分,治疗1周为(23.47±8.76)分和(31.23±9.65)分、2周为(12.56±5.63)分和(20.95±5.96)分、4周为(6.32±3.23)分和(15.33±4.56)分,均较治疗前明显降低;治疗前,观察组和对照组HADS评分分别为(25.63±5.32)分和(24.22±5.03)分,治疗1周为(20.32±4.47)分和(22.16±3.85)分、2周为(16.51±3.23)分和(18.46±3.42)分、4周为(12.25±2.89)分和(15.32±2.32)分,均较治疗前明显降低,差异有统计学意义(P<0.05),且观察组优于对照组(P<0.05)。观察组复发率低于对照组(3.6%比18.5%,P<0.05)。结论针刺“老十针”能有效改善BPPV复位后的残余症状,改善患者的情绪状态,降低复发率,有良好的安全性。

关键词：针刺 “老十针” 良性阵发性位置性眩晕耳石手法复位残余症状

Orem自理模式联合中医疗法应用于1例突发性聋患者的护理体会

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中西医结合护理 2024年第11期10卷 78-82页

作者：宋波梅雪婷裴晓璐王俊阁艾建伟闫新宇韩金帅首都医科大学附属北京中医医院外科北京100010 首都医科大学附属北京中医医院护理部北京100010 首都医科大学附属北京中医医院耳鼻喉科北京100010

本文总结1例突发性聋患者采用Orem自理模式联合中医疗法治疗及护理体会。患者入院后完善相关检查和护理评估,组建Orem自理模式干预护理小组,实施完全/部分补偿系统及支持教育系统干预,并给予耳穴压丸及中药泡洗等中医外治法,有效改善患... 详细信息

本文总结1例突发性聋患者采用Orem自理模式联合中医疗法治疗及护理体会。患者入院后完善相关检查和护理评估,组建Orem自理模式干预护理小组,实施完全/部分补偿系统及支持教育系统干预,并给予耳穴压丸及中药泡洗等中医外治法,有效改善患者听力,缓解焦虑情绪,提升自理能力。

关键词：突发性聋 Orem自理模式耳穴压丸中药泡洗中医护理

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某混凝土筒仓结构设计研究

山西建筑 2025年第2期51卷 37-43页

作者：张遥王建伟中冶京诚工程技术有限公司北京100176

圆形筒仓设计充分利用了薄壁筒壳结构的优越性,薄壁的配筋与受力、边缘效应、地震等因素有关,在设计过程中需要重点考虑。基于某实际工程案例,采用Midas Gen进行了整体建模计算,通过深仓贮料和浅仓贮料计算了筒仓侧壁的受力,并对各荷载... 详细信息

圆形筒仓设计充分利用了薄壁筒壳结构的优越性,薄壁的配筋与受力、边缘效应、地震等因素有关,在设计过程中需要重点考虑。基于某实际工程案例,采用Midas Gen进行了整体建模计算,通过深仓贮料和浅仓贮料计算了筒仓侧壁的受力,并对各荷载工况进行了分析。由于地震力对筒仓会产生较大影响,分析了不同地震工况下地震力的大小。在此基础上,贮料荷载对于仓壁的水平作用较为明显,通过荷载组合对筒仓侧壁进行设计研究。总结了侧壁配筋的控制因素,为筒仓设计提供帮助。

关键词：圆形筒仓深、浅仓模型有限元边缘效应

基于地震勘探与瞬变电磁法信息融合的含水陷落柱精细探测研究

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煤矿现代化 2025年第1期34卷 78-83,90页

作者：裴建伟冯亮山西世德孙家沟煤矿有限公司山西忻州036600

在煤矿含水陷落柱精细探测中,地震波场与瞬变电磁场相结合的融合处理方法具有良好的发展前景。为此,以孙家沟煤矿为例,通过提取瞬变电磁法反演电阻率,优化8个对目标地质构造敏感的地震属性,选择基于粒子群优化(PSO-BPNN)的反向传播神经... 详细信息

在煤矿含水陷落柱精细探测中,地震波场与瞬变电磁场相结合的融合处理方法具有良好的发展前景。为此,以孙家沟煤矿为例,通过提取瞬变电磁法反演电阻率,优化8个对目标地质构造敏感的地震属性,选择基于粒子群优化(PSO-BPNN)的反向传播神经网络(BPNN)作为模型试验和工程应用的融合方法,通过试验模型验证了PSO-BPNN预测煤矿不同含水陷落柱(WBCC)的可行性和有效性,在工程应用中,将钻孔属性用于PSO-BPNN训练,取得了较好的融合效果。结果表明,8个属性可以作为基于地震法和瞬变电磁法的WBCC信息融合的主要特征集,进而通过PSO-BPNN检测煤矿陷落柱的边界和丰度。

关键词：地震属性瞬变电磁法含水陷落柱反向传播神经网络

Studyon Evaluation Methods for Lateral Stability of High-Speed Trains

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中国铁道科学 2012年第6期33卷 132-139页

作者： YAO jianwei SUN Lixia HOU Fuguo Railway Science and Technology Research and Development Center China Academy of Railway Sciences Beijing 100081 China

Taking a high-speed train in China as an example,using computer simulation technology and comparing with the test data,the three current methods including linear stability analysis method,nonlinear stability analysis method and the field testing criterion are studied to evaluate stability of high-speed trains.A new stability evaluation method is proposed which can be used to evaluate lateral stability of high-speed vehicle based on the codes of UIC 515and UIC *** the viewpoint of taking the most unfavorable track conditions into account and improving the safety margin,the new method uses the root mean square of bogie lateral acceleration as a criterion to evaluate the lateral stability of high-speed *** example shows that the proposed method not only considers the forced vibration caused by track irregularities in the actual practice,but also takes the instability self-excited vibration into account,so it can realize early warning of bogie slight unstable oscillation,meanwhile the method itself does not involve complex algorithms which has the possibility of engineering applications.

关键词： High-speed train Lateral stability Critical speed Evaluation method

The a Posteriori Error Estimates for Chebyshev-Galerkin Spectral Methods in One Dimension

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Advances in Applied Mathematics and Mechanics 2015年第2期7卷 145-157页

作者： jianwei Zhou Department of Mathematics Linyi UniversityShandong 276005China

In this paper,the Chebyshev-Galerkin spectral approximations are em-ployed to investigate Poisson equations and the fourth order equations in one ***,p-version finite element methods with Chebyshev polynomials are utilized to solve Poisson *** efficient and reliable a posteriori error esti-mators are given for different ***,the a priori error estimators are derived *** numerical experiments are performed to verify the the-oretical analysis for the a posteriori error indicators and a priori error estimations.

关键词： Chebyshev-Galerkin spectral approximation Chebyshev polynomial a posteriori error indicator p-versionﬁnite element method

Flow field design and experimental investigation of electrochemical machining on blisk

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Chinese Journal of Aeronautics 2022年第8期35卷 295-303页

作者： jianwei GUO Dong ZHU Di ZHU College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

Flow field is a crucial factor to influence the stability and surface quality in the electrochemical machining(ECM)of blisks.A four-way flow mode was proposed to eliminate mixing regions of electrolyte at the leading and tailing *** flow field models were described separately in this report:a W-shaped flow mode and a four-way flow *** flow field was analyzed through a finite element *** results showed that,in comparison with the W-shaped flow mode,the distribution of electrolyte flow was more uniformed and the mixed region in the flow channel was *** pressure of the leading and tailing edges inlets was optimized,and optimal pressure of 0.6 MPa was *** addition,verification experiments were performed,and the results showed that the stability,efficiency,and quality of the profiles of the blisk blade manufactured by ECM were enhanced in the new flow mode.

关键词： Blisk Electrochemical machining Electrolyte Flow field Surface quality

Research on data load balancing technology of massive storage systems for wearable devices

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Digital Communications and Networks 2022年第2期8卷 143-149页

作者： Shujun Liang Jing Cheng jianwei Zhang Software Engineering College Zhengzhou University of Light IndustryZhengzhou450000China Engineering Training Center Zhengzhou University of Light Industry Zhengzhou450000China

Because of the limited memory of the increasing amount of information in current wearable devices,the processing capacity of the servers in the storage system can not keep up with the speed of information growth,resulting in low load balancing,long load balancing time and data processing ***,a data load balancing technology is applied to the massive storage systems of wearable devices in this *** first analyze the object-oriented load balancing method,and formally describe the dynamic load balancing issues,taking the load balancing as a mapping ***,the task of assigning each data node and the request of the corresponding data node’s actual processing capacity are *** data is allocated to the corresponding data storage node to complete the calculation of the comprehensive weight of the data storage *** to the load information of each data storage node collected by the scheduler in the storage system,the load weight of the current data storage node is calculated and *** data load balancing of the massive storage system for wearable devices is *** experimental results show that the average time of load balancing using this method is 1.75h,which is much lower than the traditional *** results show the data load balancing technology of the massive storage system of wearable devices has the advantages of short data load balancing time,high load balancing,strong data processing capability,short processing time and obvious application.

关键词： Wearable device Massive data Data storage system Load balancing Weigh