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Measuring frailty in patients with severe aortic stenosis:a comparison of the edmonton frail scale with modified fried frailty assessment in patients undergoing transcatheter aortic valve replacement

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Journal of Geriatric Cardiology 2020年第7期17卷 441-446页

作者： Francisco J Romeo Maximiliano Smietniansky Mariela Cal Cristian Garmendia juan M Valle Raleigh Ignacio MSeropian Mariano Falconi pablo oberti Vadim Kotowicz Carla RAgatiello Daniel H Berroca Division of Interventional Cardiology Hospital Italiano de Buenos AiresBuenos AiresArgentina Division of Internal Medicine and Geriatrics Hospital Italiano de Buenos AiresBuenos AiresArgentina Division Cardiology Hospital Italiano de Buenos AiresBuenos AiresArgentina Division of Cardiovascular Surgery Hospital Italiano de Buenos AiresBuenos AiresArgentina

Frailty is generally defined as a clinical syndrome of decreased physiologic reserve which drives to increased vulnerability and susceptibility to different stressors together with poor recovery to homeostasis.[1]The relevance of frailty status in a wide range of prospective cohorts is mostly related to an increasing burden in both mortality,hospital readmissions,disability,and falls.

关键词： Aortic stenosis Frailty Transcatheter aortic valve replacement

大中小学思政课区域一体化的价值意蕴、驱动要素与推进策略

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东北师大学报（哲学社会科学版） 2025年第1期 10-18页

作者：李爱琴师海娟东北林业大学马克思主义学院黑龙江哈尔滨150040

大中小学思政课区域一体化是大中小学思政课一体化的重要组成部分和重点建设方向,其核心要义在于区域教育主体突破学段和校际壁垒,以共同体成员的协作互动促进思想政治教育资源在区域间的有序流动和优化配置,实现大中小学思政课区域一... 详细信息

大中小学思政课区域一体化是大中小学思政课一体化的重要组成部分和重点建设方向,其核心要义在于区域教育主体突破学段和校际壁垒,以共同体成员的协作互动促进思想政治教育资源在区域间的有序流动和优化配置,实现大中小学思政课区域一体化的整体内涵式发展。新时代持续推进大中小学思政课区域一体化走深走实,可广泛凝聚区域多主体人才协同共培的价值共识,形成多模态纵横连贯式的区域教育网络生态系统,全面提升大中小学思想政治教育区域一体化的建设质量。学校思想政治教育政策要求、新时代思政课改革创新发展诉求和学生个人成长发展需求对大中小学思政课区域一体化具有正向驱动作用,牵动着大中小学思政课区域一体化建设的“时”和“序”、“质”和“量”、“道”和“术”。深化大中小学思政课区域一体化建设,要健全常态长效运行机制,畅通区域管理行动经络;补足协同推进短板弱项,统筹区域格局协调发展;建立多元主题合作网络,深化区域合作互联互通;优化教育资源服务供给,实现区域资源无界共享。

关键词：大中小学思政课区域一体化立德树人思想政治教育

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内冲击激发式安全雷管的研制与适配性测试

火工品 2025年第1期 1-6页

作者：邓小娟代鹏举董金龙刘晓娟王爱上海鲲程电子科技有限公司上海201100 广东宏大民爆集团有限公司广东广州510000 湖南湘科控股集团有限公司湖南长沙410000 江西新余国泰特种化工有限责任公司江西新余338000 湖南神斧集团湘南爆破器材有限责任公司湖南永州425000

针对工业雷管在使用过程中因起爆药感度高而引发的安全事故和环境污染问题,研制了一种新型内冲击激发式安全雷管(简称“IID雷管”),并开展其与不同点火药的适配性测试。通过采用猛炸药作为主要装药,以及设计激发组件,实现了高效有序的... 详细信息

针对工业雷管在使用过程中因起爆药感度高而引发的安全事故和环境污染问题,研制了一种新型内冲击激发式安全雷管(简称“IID雷管”),并开展其与不同点火药的适配性测试。通过采用猛炸药作为主要装药,以及设计激发组件,实现了高效有序的起爆和传爆过程;通过与不同点火药的适配测试,以及对起爆能力、延期精度等关键功能的全面评估,验证了IID雷管在与LTNR和K-K等药剂适配时,各项性能均满足行业标准。此外,IID雷管结构工艺简单、安全环保,具有广泛的应用前景。

关键词：安全雷管数码电子雷管内冲击激发无起爆药雷管激发组件

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Guest Editorial:Special Section on protection and Control of Smart Grid with High penetration of Converter Interfaced Generation Resources

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Journal of Modern power Systems and Clean Energy 2021年第6期9卷 I0001-I0002页

作者： juan M.Gers A.p.Sakis Meliopoulos GERS WestonFLUSA Georgia Tech AtlantaGA.USA

ELECTRICAL system characteristics are changing substantially as the penetration levels of renewable generation and in general converter interfaced generation resources(CIGRs)*** operation of these systems constitutes a challenge for the engineering in protection and control *** of the importance of CIGRs for the modern power systems lies in the integration of renewable energy sources into the conventional distribution system,reducing the environmental impact and emissions.

关键词： Smart Converter system

基于EDEM的花生联合收获机清选装置设计与试验

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农机化研究 2025年第1期47卷 99-105页

作者：白云李娟徐盛果青岛农业大学机电工程学院山东青岛266109 江苏深瑞光学技术有限公司南京210031

为进一步降低花生联合收获清选除杂过程中荚果损失率高、含杂率高等问题,重点研究了花生混合物(花生荚果—茎秆—土杂)基本物理参数和悬浮特性,创新提出了一种风筛组合式花生清选装置。该振动筛上筛采取锯齿式结构,下筛采取孔式结构,增... 详细信息

为进一步降低花生联合收获清选除杂过程中荚果损失率高、含杂率高等问题,重点研究了花生混合物(花生荚果—茎秆—土杂)基本物理参数和悬浮特性,创新提出了一种风筛组合式花生清选装置。该振动筛上筛采取锯齿式结构,下筛采取孔式结构,增加了花生混合物运动距离,提高了花生混合物清选效率。为确定振动筛最佳工作参数,结合EDEM仿真软件,建立了花生荚果—茎秆—土杂离散元模型,系统分析了振动筛往复作业过程中花生混合物的运动轨迹,并以振动筛振幅、频率和倾角为试验因素,以损失率和含杂率为试验指标进行试验优化分析,通过Design Expert 10试验分析软件Optimization,对试验结果进行优化。结果表明:在振动筛最佳工作参数下,即振幅为5.4 mm、频率为24 Hz、倾角为8°时,花生混合物损失率为1.57%,含杂率为1.19%。

关键词：花生清选除杂 EDEM 试验分析

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Benchmarking Approach to Compare Web Applications Static Analysis Tools Detecting OWASp Top Ten Security Vulnerabilities

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Computers, Materials & Continua 2020年第9期64卷 1555-1577页

作者： juan R.Bermejo Higuera Javier Bermejo Higuera juan A.Sicilia Montalvo Javier Cubo Villalba juan JoséNombela pérez Escuela Superior de Ingeniería y Tecnología Universidad Internacional de La RiojaLa Rioja26006Spain

To detect security vulnerabilities in a web application,the security analyst must choose the best performance Security Analysis Static Tool(SAST)in terms of discovering the greatest number of security vulnerabilities as *** compare static analysis tools for web applications,an adapted benchmark to the vulnerability categories included in the known standard Open Web Application Security project(OWASp)Top Ten project is *** information of the security effectiveness of a commercial static analysis tool is not usually a publicly accessible research and the state of the art on static security tool analyzers shows that the different design and implementation of those tools has different effectiveness rates in terms of security *** the significant cost of commercial tools,this paper studies the performance of seven static tools using a new methodology proposal and a new benchmark designed for vulnerability categories included in the known standard OWASp Top Ten ***,the practitioners will have more precise information to select the best tool using a benchmark adapted to the last versions of OWASp Top Ten *** results of this work have been obtaining using widely acceptable metrics to classify them according to three different degree of web application criticality.

关键词： Web application benchmark security vulnerability Security Analysis Static Tools assessment methodology false positive false negative precision f-measure

An unsupervised pattern recognition methodology based on factor analysis and a genetic-DBSCAN algorithm to infer operational conditions from strain measurements in structural applications

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Chinese Journal of Aeronautics 2021年第2期34卷 165-181页

作者： juan Carlos pERAFAN-LOpEZ Julian SIERRA-pEREZ Grupo de Investigacion en Ingenieria Aeroespacial Universidad Pontificia BolivarianaCircular 170-01Medellin 050031Colombia

Structural Health Monitoring(SHM) suggests the use of machine learning algorithms with the aim of understanding specific behaviors in a structural system. This work introduces a pattern recognition methodology for operational condition clustering in a structure sample using the well known Density Based Spatial Clustering of Applications with Noise(DBSCAN) *** methodology was validated using a data set from an experiment with 32 Fiber Bragg Gratings bonded to an aluminum beam placed in cantilever and submitted to cyclic bending loads under 13 different operational conditions(pitch angles). Further, the computational cost and precision of the machine learning pipeline called FA + GA-DBSCAN(which employs a combination of machine learning techniques including factor analysis for dimensionality reduction and a genetic algorithm for the automatic selection of initial parameters of DBSCAN) was measured. The obtained results have shown a good performance, detecting 12 of 13 operational conditions, with an overall precision over 90%.

关键词： Clustering DBSCAN Factor analysis FBGs pattern recognition Strain field

Nonlinear magneto-electric response of a giant magnetostrictive/piezoelectric composite cylinder

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Acta Mechanica Sinica 2012年第2期28卷 385-392页

作者： Yuan-Wen Gao juan-juan Zhang Key Laboratory of Mechanics on Western Disaster and Environment Ministry of Education and College of Civil Engineering and MechanicsLanzhou University730000 LanzhouChina

In this study, we investigate the nonlinear cou- pling magneto-electric （ME） effect of a giant magnetostric- tive/piezoelectric composite cylinder. The nonlinear consti- tutive relations of the ME material are taken into account, and the influences of the nonlinear material properties on the ME effect are investigated for the static and dynamic cases, respectively. The influences of different constraint conditions on the ME effect are discussed. In the dynamic case considering nonlinear material properties, the double frequency ME response （The response frequency is twice the applied magnetic frequency） is obtained and discussed, which can be used to explain the experiment phenomenon in which the input signal with frequency f is converted to the output signal with 2f in ME laminated structures. Some calculations on nonlinear ME effect are conducted. The obtained results indicate that the nonlinear material properties affect not only the magnitude of the ME effect in the static case but also the ME response frequency in the dynamic case

关键词： Nonlinear coupling ME effect Layered com- posite cylinder. Double frequency ME response

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数字技术驱动下中国民歌变革及应对策略研究

湖北科技学院学报 2025年第1期45卷 80-85页

作者：胡娟方元河南职业技术学院音乐学院河南郑州450046

数字科技的崛起对音乐创作和传播方式带来了革命性的变化,同时也对中国民歌的传承和发展提出了新的课题。本研究旨在深入探讨数字化发展对中国民歌的影响,包括作品表演形式与作品的传承与创新,并详细分析其所面临的挑战和机遇,提出相应... 详细信息

数字科技的崛起对音乐创作和传播方式带来了革命性的变化,同时也对中国民歌的传承和发展提出了新的课题。本研究旨在深入探讨数字化发展对中国民歌的影响,包括作品表演形式与作品的传承与创新,并详细分析其所面临的挑战和机遇,提出相应的对策和建议。通过理论支持和实践指导,期望为传承和创新中国民歌作出积极贡献。

关键词：数字技术中国民歌变革应对