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一种POA-VMD和自编码器结合的风电机组轴承劣化指标构建及故障诊断方法

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机床与液压 2024年第13期52卷 219-226页

作者：李俊卿耿继亚国晓宇刘若尧胡晓东何玉灵华北电力大学电气与电子工程学院河北保定071000

针对目前轴承性能劣化指标的构建及故障诊断高度依赖专家经验,限制条件繁多,实际应用情景单一的问题,提出一种鹈鹕优化算法(POA)优化的变分模态分解(VMD)和自编码器结合的风机轴承劣化指标构建及故障诊断方法。首先利用POA-VMD算法将轴... 详细信息

针对目前轴承性能劣化指标的构建及故障诊断高度依赖专家经验,限制条件繁多,实际应用情景单一的问题,提出一种鹈鹕优化算法(POA)优化的变分模态分解(VMD)和自编码器结合的风机轴承劣化指标构建及故障诊断方法。首先利用POA-VMD算法将轴承振动信号采用自适应方法分解为K个固有模态分量(IMF),并针对上述分量分别构建K个自编码器;然后以正常状态振动信号的分解结果为训练样本完成自编码器的训练,并以训练完成后模型的输出结果为基础构建轴承劣化指标,借助劣化指标监测轴承早期微弱故障;最后对故障时刻振动信号的IMF分量重构结果进行包络谱分析,确定故障的类型。经实验验证:该方法不仅可以清晰地展现轴承的劣化过程,对早期微弱故障敏感性高,而且在故障发生后可以准确诊断出故障类型。

关键词：风电机组轴承劣化故障诊断鹈鹕优化算法自编码器变分模态分解

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情感驱动的智能艺术研究综述

包装工程 2024年第12期45卷 1-11,I0006页

作者：吴宋若瑶沈寒暑陈铭威洪子帧崔楚峤肖懿张克俊浙江大学计算机科学与技术学院杭州310027 湖南大学设计艺术学院长沙410082

目的从数据、方法,以及应用三方面梳理情感化智能艺术的研究现状,并总结该领域的发展历程、局限性及未来研究趋势。方法基于当前的文献、研究成果与应用产品,回顾了情感标注方式的变化及其对情感艺术数据库的影响。解释了情感识别、可... 详细信息

目的从数据、方法,以及应用三方面梳理情感化智能艺术的研究现状,并总结该领域的发展历程、局限性及未来研究趋势。方法基于当前的文献、研究成果与应用产品,回顾了情感标注方式的变化及其对情感艺术数据库的影响。解释了情感识别、可控生成、跨媒体等智能技术的实现原理,以及多种情感驱动的智能艺术方法。总结了三种情感与智能艺术的交互机制,以及代表性产品对医疗健康、文化教育、商业营销等领域的影响。结论情感化方法提升了智能作品的感染力,支持了艺术创作中的人机协同。随着艺术与技术的进一步融合,艺术领域将迎来新的生产、体验与消费模式。

关键词：人工智能艺术情感计算情感艺术数据库情感驱动的艺术生成

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键合参数对电镀金键合性能的影响

电子与封装 2024年第9期24卷 41-46页

作者：王世春沈若尧任长友张欣桐武帅邓川王彤郭可升刘宏郝志峰季华实验室广东佛山528200 深圳市联合蓝海应用材料科技股份有限公司广东深圳518020 广东工业大学轻工化工学院广州510006

采用超声波键合对由无氰电镀金和含氰电镀金制备的封装材料进行金丝键合测试,研究了键合工艺参数(超声功率、超声时间、键合压力)对键合性能的影响。结果表明,采用无氰电镀金液的底材材料硬度高,金丝焊球处发生失效的现象较多,而采用含... 详细信息

采用超声波键合对由无氰电镀金和含氰电镀金制备的封装材料进行金丝键合测试,研究了键合工艺参数(超声功率、超声时间、键合压力)对键合性能的影响。结果表明,采用无氰电镀金液的底材材料硬度高,金丝焊球处发生失效的现象较多,而采用含氰电镀金液的底材材料硬度低,金丝焊球处发生失效的现象较少。对于低硬度的电镀金层,其焊球直径和键合高度都较低,有助于键合金丝和电镀金界面实现更好的融合。超声时间是影响键合性能的主要因素,当超声时间增加至300 ms,金丝焊球不再出现失效,有效解决了键合性能不良的问题。

关键词：封装技术电镀金液工艺参数超声波键合力学性能

Focused crawling strategies based on ontologies and simulated annealing methods for rainstorm disaster domain knowledge

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Frontiers of Information Technology & Electronic Engineering 2022年第8期23卷 1189-1204页

作者： Jingfa LIU Fan LI ruoyao DING Zi’ang LIU Guangzhou Key Laboratory of Multilingual Intelligent Processing Guangdong University of Foreign StudiesGuangzhou 510006China School of Information Science and Technology Guangdong University of Foreign StudiesGuangzhou 510006China School of Computer and Software Nanjing University of Information Science&TechnologyNanjing 210044China Faculty of Science University of AlbertaEdmonton T6G2H6Canada

At present,focused crawler is a crucial method for obtaining effective domain knowledge from massive heterogeneous *** most current focused crawling technologies,there are some difficulties in obtaining high-quality crawling *** main difficulties are the establishment of topic benchmark models,the assessment of topic relevance of hyperlinks,and the design of crawling *** this paper,we use domain ontology to build a topic benchmark model for a specific topic,and propose a novel multiple-filtering strategy based on local ontology and global ontology(MFSLG).A comprehensive priority evaluation method(CPEM)based on the web text and link structure is introduced to improve the computation precision of topic relevance for unvisited hyperlinks,and a simulated annealing(SA)method is used to avoid the focused crawler falling into local optima of the *** incorporating SA into the focused crawler with MFSLG and CPEM for the first time,two novel focused crawler strategies based on ontology and SA(FCOSA),including FCOSA with only global ontology(FCOSA_G)and FCOSA with both local ontology and global ontology(FCOSA_LG),are proposed to obtain topic-relevant webpages about rainstorm disasters from the *** results show that the proposed crawlers outperform the other focused crawling strategies on different performance metric indices.

关键词： Focused crawler Ontology Priority evaluation Simulated annealing Rainstorm disaster

New discovery of high-affinity SARS-CoV-2 spike S2 protein binding peptide selected by PhIP-Seq

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Virologica Sinica 2022年第5期37卷 758-761页

作者： Mengyuan Chen Shuizhen He Hualong Xiong Dongxu Zhang Shaojuan wang wangheng Hou Xiaomei Zhu Jin wang Yang Huang Congming Hong Yubin Wu ruoyao Qi Tianying Zhang Quan Yuan Tingdong Li Yixin Chen Shiyin Zhang Shengxiang Ge Jun Zhang Ningshao Xia State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics National Institute of Diagnostics and Vaccine Development in Infectious DiseasesSchool of Public HealthXiamen UniversitySouth Xiang'an RoadXiamen361102China Xiamen Haicang Hospital Haiyu RoadXiamen361026China School of Life Sciences Xiamen UniversitySouth Xiang'an RoadXiamen361102China

Dear Editor,Theworld had suffered pandemics of COVID-19 caused by *** the time ofwriting,COVID-19 is still widely spreading inmany countries and regions,and by June 14,2022,totally 532,887,351 cases,including 6,307,021 deaths,were reported globally(WHO,https://***/table).Powerful measures,such as prophylactic and therapeutic interventions against the virus,are in urgent need for COVID-19 control and *** spike protein,which is expressed on the virus surface,is the key determinant of viral-host interaction(Ng et al.,2021)and mediates the virus entry.

关键词： PhIP totally

Taming Reactive Oxygen Species:Mitochondria-Targeting Aggregation-Induced Emission Luminogen for Neuron Protection via Photosensitization-Triggered Autophagy

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CCS Chemistry 2022年第7期4卷 2249-2257页

作者： Chao Chen ruoyao Zhang Jianyu Zhang Yufan Zhang Haoke Zhang Zaiyu wang Xiaolin Huang Sijie Chen Ryan T.K.Kwok Jacky W.Y.Lam Dan Ding Ben Zhong Tang Department of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionInstitute for Advanced StudyState Key Laboratory of Molecular NanoscienceDivision of Life ScienceDepartment of Chemical and Biological EngineeringThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong 999077 State Key Laboratory ofMedicinal Chemical Biology Key Laboratory of Bioactive MaterialsMinistry of EducationCollege of Life SciencesNankai UniversityTianjin 300071 Ming Wai Lau Centre for Reparative Medicine Karolinska InstitutetHong Kong 999077 Center for Aggregation-Induced Emission SCUT-HKUST Joint Research InstituteState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640 Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen 518172 AIE Institute Guangzhou Development DistrictHuangpuGuangzhou 510530

Oxidative damage to cells leads to accumulated harmful wastes,which in turn aggravate the imbalance of reactive oxygen species(ROS)and related ***,provoking the cellular defense system against severe oxidation and maintaining ROS homeostasis are ***,we designed and synthesized a powerful mitochondria-targeting aggregation-induced emission photosensitizer(named DTCSPY)by maximal restriction of heat *** is demonstrated that taming ROS generation within mitochondria through photosensitization-triggered autophagy via DTCSPY achieved a better neuroprotective effect against oxidative damages than Nacety-L-cysteine and vitamin *** work not only provides a new way to design high-performance photosensitizers by regulating the photophysical property,but also verifies the concept that taming ROS can be used for cell protection against destructive oxidation,thereby displaying broad prospects for alleviating oxidation-related diseases and promoting cell-based therapy.

关键词： aggregation-induced emission mitochondrial targeting photosensitizer reactive oxygen species neuron protection

m6A甲基化修饰非编码RNA调控病理性心脏重塑的作用

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中国组织工程研究 2024年第20期28卷 3252-3258页

作者：尹功华徐若瑶张丽娟张一凡齐洁张钧上海师范大学体育学院上海市200234

背景:m6A甲基化修饰非编码RNA是病理性心脏重塑形成机制的研究热点,在心血管疾病的发生发展中起着重要作用。目的:总结m6A甲基化修饰非编码RNA对调控病理性心肌肥大、心肌细胞死亡、心肌纤维化与血管重塑等病理性心脏重塑主要过程的可... 详细信息

背景:m6A甲基化修饰非编码RNA是病理性心脏重塑形成机制的研究热点,在心血管疾病的发生发展中起着重要作用。目的:总结m6A甲基化修饰非编码RNA对调控病理性心肌肥大、心肌细胞死亡、心肌纤维化与血管重塑等病理性心脏重塑主要过程的可能作用机制。方法:以“m6A甲基化修饰,非编码RNA,病理性心肌肥大,心肌细胞凋亡,心肌细胞焦亡,心肌细胞铁死亡,心肌纤维化,血管重塑”为中文主题词,以“m6A、non-coding RNA,pathological cardiac hypertrophy,cardiomyocyte apoptosis,cardiomyocyte pyroptosis,cardiomyocyte ferroptosis,myocardial fibrosis,vascular remodeling”为英文主题词,检索中国知网、PubMed、Web of Science数据库1974年1月至2023年4月发表的相关文献,对符合筛选标准的86篇文献进行综述。结果与结论:①m6A甲基化修饰是一种动态可逆的表观遗传修饰方式;②病理性心脏重塑主要包括病理性心肌肥大、心肌细胞死亡、心肌纤维化、血管重塑,m6A相关酶可调控病理性心脏重塑相关进程;③m6A甲基化修饰相关酶可通过多种非编码RNA与不同信号通路参与调控病理性心脏重塑过程,可作为心血管疾病新的潜在干预方式;④在病理性心脏重塑中,m6A甲基化修饰与非编码RNA之间的调控关系仍处于起步阶段,随着表观遗传学的发展,m6A甲基化修饰非编码RNA来调控病理性心脏重塑有望有新的发展。

关键词： m6A甲基化修饰病理性心脏重塑非编码RNA 病理性心肌肥大心肌细胞死亡心肌纤维化血管重塑综述

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新古典主义时期女上装斯潘塞形制及结构

丝绸 2017年第9期54卷 36-42页

作者：王朝晖高璐徐若瑶东华大学服装.艺术设计学院上海200051 同济大学上海国际设计创新研究院上海200092

以服装结构为出发点,从技术层面对西方传统服装进行复原研究。文章选取新古典主义时期的斯潘塞女装为研究对象,对美国大都会博物馆、英国维多利亚与阿尔伯特博物馆内收藏的27件斯潘塞藏品进行了观察,结合相关文献、图像、实物等历史资料... 详细信息

以服装结构为出发点,从技术层面对西方传统服装进行复原研究。文章选取新古典主义时期的斯潘塞女装为研究对象,对美国大都会博物馆、英国维多利亚与阿尔伯特博物馆内收藏的27件斯潘塞藏品进行了观察,结合相关文献、图像、实物等历史资料,以服装实物图为主要研究参考依据,统计归纳了斯潘塞的基本形制,分析总结出复原对象的款式分片结构、服装细部尺寸等。并参考同时期的相似服装的平面结构图进行了复原制作,总结出斯潘塞的结构特点,对中国在西方服装研究体系的完善具有积极意义。

关键词：复原研究服装结构斯潘塞新古典主义时期西方传统服装

Simulated microgravity-induced endogenous H_(2)O_(2) traced by an AIEgen

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Science Bulletin 2022年第24期67卷 2513-2516,M0003页

作者： Zhaoqing Su Zhao Li ruoyao Zhang Huilin Xie Yulin Deng Ben Zhong Tang School of Life Science Beijing Institute of TechnologyBeijing 100081China Institute of Engineering Medicine School of Medical TechnologyBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory for Separation and Analysis in Biomedicine and Pharmaceuticals Beijing 100081China School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenShenzhen 518172China Department of Chemistry The Hong Kong University of Science and TechnologyHong KongChina

With the continuous exploration of space by humans,the requirements for spaceflight are gradually *** these challenging missions,there is a great concern for the health of astronauts exposed to special environments in space[1].As one ofthemainfactors in specialenvironments,microgravityhasbeen found to be a stressful stimulus that can cause oxidative stress in human cells and thus can have an effect on astronauts'bodies[2].

关键词：聚集诱导发光可视化检测微重力条件模拟微重力氧化应激人体健康响应能力 AIE