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Staged Revascularization for Chronic Total Occlusion in the Non-IRA in Patients with ST-segment Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention:An Updated Systematic Review and Meta-analysis

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Cardiovascular Innovations and Applications 2022年第2期6卷 209-218页

作者： Yu Geng Yintang Wang Lianfeng Liu Guobin Miao ou zhang Yajun Xue Ping zhang Department of Cardiology Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijingChina

Objectives:Meta-analysis was performed to evaluate the effect of staged revascularization with concomitant chronic total occlusion(CTO)in the non-infarct-associated artery(non-IRA)in patients with ST-segment elevation myocardial infarction(STEMI)treated with primary percutaneous coronary intervention(p-PCI).Methods:Various electronic databases were searched for studies published from inception to June,2021.The primary endpoint was all-cause death,and the secondary endpoint was a composite of major adverse cardiac events(MACEs).Odds ratios(ORs)were pooled with 95%conﬁdence intervals(CIs)for dichotomous data.Results:Seven studies involving 1540 participants were included in theﬁnal analysis.Pooled analyses revealed that patients with successful staged revascularization for CTO in non-IRA with STEMI treated with p-PCI had overall lower all-cause death compared with the occluded CTO group(OR,0.46;95%CI,0.23–0.95),cardiac death(OR,0.43;95%CI,0.20–0.91),MACEs(OR,0.47;95%CI,0.32–0.69)and heart failure(OR,0.57;95%CI,0.37–0.89)com-pared with the occluded CTO group.No signiﬁcant differences were observed between groups regarding myocardial infarction and repeated revascularization.Conclusions:Successful revascularization of CTO in the non-IRA was associated with better outcomes in patients with STEMI treated with p-PCI.

关键词： ST segment elevation myocardial infarction chronic total occlusion primary percutaneous coronary intervention

A Novel Robotic Control System Mimics Doctor’s Operation to Assist Percutaneous Coronary Intervention

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Cardiovascular Innovations and Applications 2022年第2期6卷 225-231页

作者： Boda Zhou Qizhong Li Yajun Xue Lihao Huang Jie Zhou ou zhang Ping zhang Gangtie Zheng Department of Cardiology Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China School of Aerospace Engineering Tsinghua UniversityBeijing 100084China

Objectives:The use of current robotic systems to assist in percutaneous coronary intervention(PCI)fundamentally differs from performing conventional PCI.To overcome this problem,we developed a novel master-slave robotic control system to assist in PCI,and evaluated its safety and feasibility in the delivery and manipulation of coronary guidewires in vitro and in vivo.Methods:The novel robotic assist PCI system is composed of three parts:1)a master actuator,which imitates the traditional torque used by surgeons in conventional PCI,2)a slave actuator,including a guidewire delivery system and force monitoring equipment,and 3)a local area network based communication system.Results:The experiment was performed in six pigs.Both robotic and manual control completed the operation with no device-or procedure-associated complications.An experienced interventional cardiologist who was aﬁrst-time user of the novel robotic PCI system was able to advance the guidewire into a distal branch of a coronary artery within a similar time to that required with the manual procedure.Conclusion:This early in vivo experiment with the novel robotic assisted PCI control system demonstrated that its feasibility,safety,and procedural effectiveness are comparable to those of manual operation.The novel robotic-assisted PCI control system required signiﬁcantly less time to learn than other currently available systems.

关键词： medical robot PCI control system

Fasting Blood Glucose but not TMAO is Associated with in-Stent Restenosis in Patients with Acute Coronary Syndrome

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Cardiovascular Innovations and Applications 2022年第1期6卷 181-190页

作者： Boda Zhou Yajun Xue Jie Zhou Shenjie Sun Tingting Lv ou zhang Yu Geng Guobin Miao Ping zhang Department of Cardiology Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China

Background:The purpose of our study was to assess whether the occurrence of ISR might be associated with plasma TMAO levels in patients with ACS after DES implantation.Methods:This was a single center retrospective case-control study,in which 64 symptomatic patients with repeated coronary angiography after PCI and 15 patients with ISR were included in the ISR group,and 49 patients without ISR were included in the non-ISR group.High-performance liquid chromatography with tandem mass spectrometry was used to measure plasma TMAO levels.Results:No significant differences were observed in plasma TMAO between the ISR and non-ISR groups.Plasma TMAO levels showed no significant correlation with ISR,but were significantly positively correlated with diabetes mellitus,serum HbA1c levels and serum creatinine levels;moreover,they were significantly negatively correlated with female sex.ISR was significantly positively correlated with diabetes mellitus,fasting blood glucose levels,the neutro-phil to lymphocyte ratio and syntax score;in addition,it was significantly negatively correlated with platelets.Logistic regression analysis indicated that fasting blood glucose was the only independent predictor of ISR.Conclusion:Plasma TMAO may not be associated with ISR and plaque burden in patients with ACS after DES im-plantation,whereas FBG may predict the development of ISR in these patients.

关键词： TMAO restenosis AC

Online Magnetic Flux Leakage Detection System for Sucker Rod Defects Based on LabVIEW Programming

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Computers, Materials & Continua 2019年第2期58卷 529-544页

作者： ou zhang Xueye Wei School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing100044China

Aiming at the detection of the sucker rod defects,a real-time detection system is designed using the non-destructive testing technology of magnetic flux leakage(MFL).An MFL measurement system consists of many parts,and this study focuses on the signal acquisition and processing system.First of all,this paper introduces the hardware part of the acquisition system in detail,including the selection of the Hall-effect sensor,the design of the signal conditioning circuit,and the working process of the single chip computer(SCM)control serial port.Based on LabVIEW,a graphical programming software,the software part of the acquisition system is written,including serial port parameter configuration,detection signal recognition,original signal filtering,real-time display,data storage and playback.Finally,an experimental platform for the MFL detection is set up,and the MFL measurement is carried out on the transverse and longitudinal defects of the sucker rod surface.The experimental result shows that the designed acquisition and processing system has good detection performance,simple design and high flexibility.

关键词： flux leakage testing real-time detection sucker rod LabVIEW acquisition and processing

基于改进PID-LQR的导弹稳定控制方法研究

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现代防御技术 2024年第3期52卷 73-79页

作者：苏日新张欧国防科技大学空天科学学院湖南长沙410073 航天江南集团有限公司贵州贵阳550009 江南机电设计研究所贵州贵阳550009

导弹稳定控制系统是提高导弹制导性能的关键技术之一,一直以来都是研究的热点和重点。以导弹纵向平面为例,建立了导弹稳定控制的状态空间模型,推导了LQR控制算法,在传统LQR方法的基础上,结合PID算法提出了一种改进的PID-LQR导弹稳定控... 详细信息

导弹稳定控制系统是提高导弹制导性能的关键技术之一,一直以来都是研究的热点和重点。以导弹纵向平面为例,建立了导弹稳定控制的状态空间模型,推导了LQR控制算法,在传统LQR方法的基础上,结合PID算法提出了一种改进的PID-LQR导弹稳定控制方法。通过仿真分析,比较了所提方法和传统LQR方法、改进LQR方法、模糊PID-LQR方法的控制性能,并对建立的导弹模型参数进行了拉偏试验,仿真结果表明所提出的方法优于其他3种方法,具有良好的控制性能和鲁棒性。

关键词：导弹稳定控制导弹模型线性二次型调节器比例积分微分

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导弹稳定控制中陷波滤波器的离散化研究

现代防御技术 2024年第2期52卷 72-78页

作者：苏日新张欧航天江南集团有限公司贵州贵阳550009 国防科技大学空天科学学院湖南长沙410073 江南机电设计研究所贵州贵阳550009

开展导弹稳定控制设计时,通常采用陷波滤波器对弹体弹性振动频率进行抑制,保证控制系统的弹体弹性稳定性。介绍了陷波滤波器的基本原理,针对陷波滤波器离散化设计带来的频率畸变问题,提出了一种改进预畸变双线性变换法,在不改变陷波滤... 详细信息

开展导弹稳定控制设计时,通常采用陷波滤波器对弹体弹性振动频率进行抑制,保证控制系统的弹体弹性稳定性。介绍了陷波滤波器的基本原理,针对陷波滤波器离散化设计带来的频率畸变问题,提出了一种改进预畸变双线性变换法,在不改变陷波滤波器阻尼比值的基础上,通过调节阻尼大小实现频率畸变的补偿。与传统离散化方法相比,所提出的方法既补偿了畸变频率,又保证了陷波宽度和相位特性与连续域相同,具有操作简单、适用性强等优点。

关键词：稳定控制陷波滤波器弹性频率离散化设计预畸变

基于灰色系统理论的电网工程绿色建造模糊综合评价模型

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沈阳工业大学学报 2024年第1期46卷 42-48页

作者：张琦姜雪张鸥张爽莹刘松楠辽宁省电力有限公司经济技术研究院辽宁沈阳110065

为贯彻落实绿色发展理念,提升现有电网工程绿色建造评价方法的全面性、系统性以及客观性,提出了一种基于灰色系统理论的模糊综合评价模型。通过研究影响电网工程设计、施工与交付等环节的重要绿色评价因子,构建了多层次的绿色建造评价... 详细信息

为贯彻落实绿色发展理念,提升现有电网工程绿色建造评价方法的全面性、系统性以及客观性,提出了一种基于灰色系统理论的模糊综合评价模型。通过研究影响电网工程设计、施工与交付等环节的重要绿色评价因子,构建了多层次的绿色建造评价指标体系。并基于灰色系统理论确定指标权重,建立了多层级模糊综合评价模型。同时选取电网工程案例来进行验证,证明了该模型能够科学、合理地确定各指标的权重,从而为电网工程绿色建造评价及不断优化提供了支撑。

关键词：电网工程绿色建造灰色系统理论模糊综合评价评价指标体系指标权重多层次绿色评分

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新媒体时代精品短视频的生产优化路径探析

新闻研究导刊 2024年第2期15卷 104-106页

作者：张欧广汉市融媒体中心四川广汉618300

新媒体的发展是人类科技文明进步的重要标志之一,新媒体催生出许多媒体形态,包括网络媒体、社交媒体,其中短视频的出现让媒体行业的发展迈向了新的纪元。短视频具有内容简练、主题明确、特色鲜明等特点,视频的传播范围广,信息的传播速度... 详细信息

新媒体的发展是人类科技文明进步的重要标志之一,新媒体催生出许多媒体形态,包括网络媒体、社交媒体,其中短视频的出现让媒体行业的发展迈向了新的纪元。短视频具有内容简练、主题明确、特色鲜明等特点,视频的传播范围广,信息的传播速度快,能获得更多人的关注,而且短视频创作门槛相对较低,创作主体较为多元,这在很大程度上推动了短视频的发展,也为短视频平台创造了大量的经济收益。文章主要采用数据调查、同类对比等方法,探讨新媒体时代精品短视频的特点,分析当前短视频生产营销中遇到的有关内容策划、营销策略、制作水平以及竞争压力方面的困难与挑战,并得出结论:新媒体时代精品短视频需要合理规划主题内容,运用特效与音乐提高生产制作水平,注重多方联合选择合适的营销手段,才能吸引观众注意,发挥短视频信息传播作用。此外,还提出构建个性化品牌寻找独特视频风格、提升表达技巧明确短视频核心内容、保持创意导向提高视频质量,以及紧跟时代步伐提升流量与关注度等生产优化路径,旨在让短视频走上精品发展路线,发挥经济价值,让人与人之间的互动交流变得更加便捷,让信息的传播范围更加广泛,同时为新媒体时代的发展贡献力量。

关键词：新媒体时代精品短视频定义特点困难挑战优化路径

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短视频时代新闻媒体内容传播的创新策略探析

新闻研究导刊 2024年第3期15卷 95-97页

作者：张欧广汉市融媒体中心四川广汉618300

随着互联网技术的不断进步和智能手机的广泛普及,人们获取新闻信息的方式已经从传统的纸质媒体和广播电视转向了数字媒体,特别是短视频平台。短视频具有生动形象、简洁明了、易于传播等优势,已经成为人们获取新闻信息的重要途径之一。同... 详细信息

随着互联网技术的不断进步和智能手机的广泛普及,人们获取新闻信息的方式已经从传统的纸质媒体和广播电视转向了数字媒体,特别是短视频平台。短视频具有生动形象、简洁明了、易于传播等优势,已经成为人们获取新闻信息的重要途径之一。同时,面对激烈的市场竞争,如何吸引受众的注意力,提高新闻信息的传播效果,成为新闻媒体面临的重要挑战。因此,新闻媒体需要优化传播策略,创新传播内容,以更好地实现新闻信息的有效传播。文章采用文献综述法和案例分析法,通过对相关文献进行梳理和分析,了解短视频时代新闻媒体的发展情况,探讨短视频时代新闻媒体传播内容创新的必要性和重要性,如吸引受众注意、增强媒体影响力、引领媒体发展等。文章结合理论与具体案例,提出短视频时代新闻媒体传播内容的创新路径,包括内容形式创新、内容题材创新、内容互动创新、内容传播创新等。这些策略可以帮助新闻媒体更好地适应短视频时代的需求,提高新闻信息的传播效果。与此同时,新闻媒体也要兼顾新闻的真实性、公正性和客观性,避免出现误导受众的情况。文章希望能够为深入研究短视频时代新闻媒体传播内容的创新策略提供更多参考。

关键词：短视频时代新闻媒体传播内容创新策略