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QAR Data Imputation Using Generative Adversarial Network with Self-Attention Mechanism

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Big Data Mining and Analytics 2024年第1期7卷 12-28页

作者： jingqi zhao Chuitian Rong Xin Dang Huabo Sun School of Computer Science and Technology Tiangong UniversityTianjin 300387China Institute of Aviation Safety China Academy of Civil Aviation Science and TechnologyBeijing 100028China

Quick Access Recorder(QAR),an important device for storing data from various flight parameters,contains a large amount of valuable data and comprehensively records the real state of the airline ***,the recorded data have certain missing values due to factors,such as weather and equipment *** missing values seriously affect the analysis of QAR data by aeronautical engineers,such as airline flight scenario reproduction and airline flight safety status ***,imputing missing values in the QAR data,which can further guarantee the flight safety of airlines,is *** data also have multivariate,multiprocess,and temporal ***,we innovatively propose the imputation models A-AEGAN("A"denotes attention mechanism,"AE"denotes autoencoder,and"GAN"denotes generative adversarial network)and SA-AEGAN("SA"denotes self-attentive mechanism)for missing values of QAR data,which can be effectively applied to QAR ***,we apply an innovative generative adversarial network to impute missing values from QAR *** improved gated recurrent unit is then introduced as the neural unit of GAN,which can successfully capture the temporal relationships in QAR *** addition,we modify the basic structure of GAN by using an autoencoder as the generator and a recurrent neural network as the *** missing values in the QAR data are imputed by using the adversarial relationship between generator and *** introduce an attention mechanism in the autoencoder to further improve the capability of the proposed model to capture the features of QAR *** mechanisms can maintain the correlation among QAR data and improve the capability of the model to impute missing ***,we improve the proposed model by integrating a self-attention mechanism to further capture the relationship between different parameters within the QAR *** results on real datasets demonstrate that the model can rea

关键词： multivariate time series data imputation self-attention Generative Adversarial Network(GAN)

Efficient elimination and detection of phenolic compounds in juice using laccase mimicking nanozymes

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Chinese Journal of Chemical Engineering 2021年第1期34卷 167-175页

作者： Hui Huang Lulu Lei Juan Bai Ling Zhang Donghui Song jingqi zhao Jiali Li Yongxin Li College of Food Science and Engineering Jilin UniversityChangchun 130025China College of New Energy and Environment Jilin UniversityChangchun 130021China

Residual phenols in the juice can cause turbidity and affect its sensory *** is used to remove phenolic compounds from fruit juice *** order to overcome the shortcomings of natural laccase instability and high cost,in this work,we prepared a laccase mimic enzyme based on copper ion and adenosine monophosphate(AMP-Cu nanozymes).At the same mass concentration(1 mg·ml^(-1)), the catalytic activity of the nanozyme is about 15 times that of *** AMP-Cu nanozymes had a higher V_(max) and a lower Km than *** laccase mimic enzyme had a good stability under the condition of 30-90 ℃ and pH> *** also maintained high catalytic activity at high salt concentrations and 9 days storage ***,the AMP-Cu nanozyme s maintained an initial catalytic activity of about 80% after six consecutive cycles of *** linear range of detection of phenolic compounds by AMP-Cu nanozymes was 0.1-100 μmol·L^(-1) with a detection limit of 0.033 μmol·L^(-1).The phenol removal rate of AMP-Cu nanozymes was much higher than that of laccase under different reaction *** the reaction was performed for 5 h,the phenol removal rate of the fruit juice by AMP-Cu nanozymes was about 65%.The efficient removal of phenolic compounds from different juices by AMP-Cu nanozymes indicate s that they have good application prospect in the food juice industry.

关键词： Nanomaterials Enzyme Mimic laccase Phenols detection Degradation Juice clarification

Emerging delivery systems based on aqueous two-phase systems:A review

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Acta Pharmaceutica Sinica B 2024年第1期14卷 110-132页

作者： Yaowen Zhang Yankun Luo jingqi zhao Wenzhuo Zheng Jun Zhan Huaping Zheng Feng Luo State Key Laboratory of Oral Diseases National Clinical Research Center for Oral DiseasesWest China School of StomatologySichuan UniversityChengdu 610041China Department of Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China Key Laboratory of Birth Defects and Related Diseases of Women and Children(Sichuan University) Ministry of EducationChengdu 610041China Department of Dermatology Rare Diseases CenterInstitutes for Systems GeneticsFrontiers Science Center for Disease-related Molecular NetworkWest China HospitalSichuan UniversityChengdu 610041China Department of Prosthodontics West China School of StomatologySichuan UniversityChengdu 610041China

The aqueous two-phase system(ATPS)is an all-aqueous system fabricated from two immiscible aqueous *** is spontaneously assembled through physical liquid-liquid phase separation(LLPS)and can create suitable templates like the multicompartment of the intracellular *** structures containing multiple compartments make it possible to endow materials with advanced *** to the properties of ATPSs,ATPS-based drug delivery systems exhibit excellent biocompatibility,extraordinary loading efficiency,and intelligently controlled content release,which are particularly advantageous for delivering drugs in ***,we will systematically review and evaluate ATPSs as an ideal drug delivery *** on the basic mechanisms and influencing factors in forming ATPSs,the transformation of ATPSs into valuable biomaterials is ***,we concentrate on the most recent cutting-edge research on ATPS-based delivery ***,the potential for further collaborations between ATPS-based drug-carrying biomaterials and disease diagnosis and treatment is also explored.

关键词： Aqueous two-phase systems Drug delivery systems Biomaterials Microcapsules Microparticles Cell therapy Cancer treatment Organ regeneration

以技术创新推动产业化发展的案例分析研究——以深圳迈瑞生物医疗电子股份有限公司为例

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科技管理研究 2006年第9期26卷 249-251,254页

作者：赵菁奇史玉民中国科学技术大学科技哲学部安徽合肥230026

本文在深圳迈瑞生物医疗电子股份有限公司案例研究的基础上,对医疗器械产业发展的现状和行业地位、产业结构、企业规模等方面进行了分析,探讨了企业技术创新、创新主体、产业化步伐以及产业化管理等方面的问题,并得到了相应的启示。

关键词：技术创新产业化

不同Si—H含量的交联剂对有机硅弹性体性能的影响

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天津大学学报（自然科学与工程技术版） 2019年第7期52卷 763-769页

作者：冯亚凯孟凡成赵敬棋申景博天津大学化工学院天津300072 天津化学化工协同创新中心天津300072 天津莱尔德电子材料有限公司天津300457

以乙烯基硅油为基础聚合物,以含氢硅油为交联剂,在Karstedt’s催化剂的作用下,制备出加成型有机硅弹性体,并对体系的凝胶时间、固化反应历程、弹性体的交联密度和形成的交联网络进行了系统的表征.同时,探究了不同Si—H含量的交联剂对固... 详细信息

以乙烯基硅油为基础聚合物,以含氢硅油为交联剂,在Karstedt’s催化剂的作用下,制备出加成型有机硅弹性体,并对体系的凝胶时间、固化反应历程、弹性体的交联密度和形成的交联网络进行了系统的表征.同时,探究了不同Si—H含量的交联剂对固化后弹性体的渗油量、表面黏性和力学性能的影响.体系的固化反应历程通过差示扫描量热法来评价,交联密度通过测试弹性体在甲苯中的溶胀度得出,采用索氏提取法提取样品中可溶性物质,弹性体的渗油量通过析出失重法来表征,表面黏性通过测试样品与离型膜的剥离强度来评价.结果表明,以低Si—H含量的含氢硅油为交联剂时,体系的凝胶时间较长,交联密度低,形成的交联网络更加完善,进而导致弹性体的渗油量明显降低,表面黏性和断裂伸长率显著增大,但其力学强度较差,从而限制了其进一步的应用.采用高、低Si—H含量的含氢硅油并用的方式,通过调节两种交联剂的摩尔比例,制备得到了不同表面黏性的弹性体,并且可以调控弹性体的渗油量和力学性能,使其可以满足不同场合的使用要求.

关键词：交联剂 Si-H含量渗油表面黏性力学性能

基于递归奇异能量指标的板梁桥铰接缝损伤识别方法

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振动与冲击 2024年第19期43卷 249-257页

作者：许鑫祥战家旺王闯冯志超赵竞琪北京交通大学土木建筑工程学院北京100044 中交公路规划设计院有限公司北京100010

为实现板梁桥铰接缝损伤的定量定位识别,提出了一种基于递归奇异能量指标的损伤识别方法:首先将待测桥梁各相邻梁体的竖向冲击振动响应进行交叉递归分析并得到无阈值交叉递归矩阵,其次对各递归矩阵进行奇异值分解以进一步提取损伤特征,... 详细信息

为实现板梁桥铰接缝损伤的定量定位识别,提出了一种基于递归奇异能量指标的损伤识别方法:首先将待测桥梁各相邻梁体的竖向冲击振动响应进行交叉递归分析并得到无阈值交叉递归矩阵,其次对各递归矩阵进行奇异值分解以进一步提取损伤特征,最后对奇异值求取能量(递归奇异能量指标(recurrence singular energy index,RSEI)),进一步建立了基于该指标的铰接缝损伤识别方法,并对其适用性进行了分析。结果表明:RSEI指标对板梁桥铰接缝损伤较为敏感,所提方法仅在板梁桥跨中布置一排传感器即可实现铰接缝平均损伤程度的定量识别,并可实现损伤铰缝的定位,识别效果良好;铰接缝损伤位置、损伤个数及噪声对识别结果的影响极小,冲击位置会对识别结果造成一定影响,但识别效果在可接受的范围之内;应用RSEI指标开展板梁桥铰接缝损伤识别时,建议将冲击位置设在边梁跨中,可避免冲击位置对识别结果造成的影响,取得更加理想的识别效果。

关键词：损伤识别板梁桥铰接缝递归奇异能量递归图

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《低规》第4.4.7条相关问题刍议

建筑电气 2009年第2期28卷 20-21页

作者：赵景奇临汾华尧工程咨询有限公司山西省临汾市041000

就《低压配电设计规范》(GB50054-95)第4.4.7条相关联的一些问题作了讨论,包括:第4.4.7条被列为强制性条文,用过电流保护兼接地故障保护在一些情况下,表面符合而实际不符合第4.4.7条要求时,低压配电线路接地故障保护尽可能采用剩余电流... 详细信息

就《低压配电设计规范》(GB50054-95)第4.4.7条相关联的一些问题作了讨论,包括:第4.4.7条被列为强制性条文,用过电流保护兼接地故障保护在一些情况下,表面符合而实际不符合第4.4.7条要求时,低压配电线路接地故障保护尽可能采用剩余电流动作保护,以及对消防用电设备接地故障保护等进行了分析,并提出了解决意见。

关键词：接地故障保护强制性条文消防用电设备 IT系统

区域科技创新策源地:理论发凡、现实基础及政策建议——基于安徽视角

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淮南师范学院学报 2024年第1期26卷 60-66页

作者：赵菁奇中共安徽省委党校/安徽行政学院科学文化教研部安徽合肥230022

科技创新策源地是实现高水平科技自立自强的战略支撑。文章系统梳理了科技创新策源地的理论内涵和学理基础,采用实证法分析了安徽打造区域科技创新策源地的现实基础和存在困境。安徽打造科技创新策源地要以合肥综合性国家科学中心、合... 详细信息

科技创新策源地是实现高水平科技自立自强的战略支撑。文章系统梳理了科技创新策源地的理论内涵和学理基础,采用实证法分析了安徽打造区域科技创新策源地的现实基础和存在困境。安徽打造科技创新策源地要以合肥综合性国家科学中心、合肥国家实验室为策源基石,以大学和科研院所为策源基础,以科技创新企业为策源动力,以创新环境为策源引领。

关键词：科技创新策源地安徽

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安徽长三角城市群的技术创新绩效评价

安徽广播电视大学学报 2018年第1期 20-25页

作者：赵菁奇中共安徽省委党校合肥230022

安徽长三角城市群是安徽省对接"一带一路"和长江经济带国家战略的重要区域,在推进安徽省供给侧结构改革和产业结构优化方面发挥重要作用。基于2011-2015年安徽省长三角城市群大中型企业技术创新原始数据,结合各市产业实际发展方向,构建... 详细信息

安徽长三角城市群是安徽省对接"一带一路"和长江经济带国家战略的重要区域,在推进安徽省供给侧结构改革和产业结构优化方面发挥重要作用。基于2011-2015年安徽省长三角城市群大中型企业技术创新原始数据,结合各市产业实际发展方向,构建长三角城市群技术创新绩效评价指标体系,运用灰色关联度和主分量分析法对2011-2015年数据进行分析,提出提升安徽省长三角城市群技术创新能力的政策建议。

关键词：长三角城市群技术创新绩效评价对策建议