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Object Recognition Based on Improved Context Model

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Chinese Journal of Electronics 2018年第3期27卷 573-581页

作者： WEN Chenglin ZHOU Guangfu gao jingli LI Hongwei XU Xiaobin School of Automation Hangzhou Dianzi University College of Electrical Engineering Zhejiang University

An object recognition method is proposed in this paper by introducing the spatial location relationship of objects into the context model. The spatial-position information of the objects is first utilized to model the context model. The model parameters and dependency structure of objects can be learned by integrating the context information into the same probabilistic framework. The image recognition is accomplished by using the advantages of efficient inference of the tree structure model. The proposed method can greatly improve the object recognition rate and better keep the consistency of scenes. The effectiveness of the proposed algorithm is verified by testing and comparing with other existing algorithms in the actual dataset.

关键词： Context model Tree model Co-occurrence tree Spatial relationships

Interfacial charge effects of supported-metal-cluster heterostructures on azo hydrogenation catalyzation

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Nano Research 2024年第5期17卷 3853-3862页

作者： Zhenhua Gu jingli Zhang Zijun Zhang Qingxue Mu Liangchong Yu Taolei Sun Lei Shen Guanbin gao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases School of ChemistryChemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China

The impact of interfacial charge on catalytic performance of supported-metal-cluster(SMC)heterostructures remains unclear,hindering efforts to develop high-performance SMC *** we systematically investigated interfacial charge effects of SMCs using a model system of graphene-supported gold-nanoclusters(AuNCs/rGO)for azo *** types of SMCs with different interfacial charges were synthesized by anchoring electropositive 2-aminoethanethiol(CSH),amphoteric cysteine(Cys),and electronegative 3-mercaptopropionic-acid(MPA)onto AuNCs/rGO,*** three SMCs exhibited high and selective catalytic activity to azo-hydrogenation in four representative azo *** catalytic activity of Cys@AuNCs/rGO was lower than that of CSH@AuNCs/rGO but higher than that of MPA@AuNCs/***,the cyclic stability of Cys@AuNCs/rGO was inferior to that of both CSH@AuNCs/rGO and MPA@AuNCs/*** mechanistic studies revealed that amino ligands modified CSH@AuNCs and Cys@AuNCs agglomerated into large-size gold nanoparticles on rGO surface during catalytic reaction under NaBH_(4) action,leading to reduced efficiency and cyclic ***,non-amino ligand modified MPA@AuNCs only partially detached from rGO surface without agglomeration,resulting in better cyclic *** of amino groups in ligands such as modifying-NH_(3)^(+)group in Cys into imine to form N-isobutyryl-L-cysteine(NIBC)substantially improved the cyclic stability while maintaining the high activity in the NIBC@AuNCs/rGO catalyst *** work provides an approach for developing a highly-active and stable SMC heterostructure catalyst via manipulating interfacial charges in SMC.

关键词： interfacial charge effect supported-metal-cluster catalyst azo hydrogenation graphene supported gold nanoclusters

A Semi-Mechanistic Model for Predicting the Service Life of Composite Coatings on VW63Z Magnesium Alloy

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1161-1176页

作者： Xiaoxue Wang Jingjing Guo Zihao Zeng Peng Zhou Rongqiao Wang Xiuchun Liu Kai gao jingli Sun Yong Yuan Fuhui Wang School of Energy and Power Engineering Beihang UniversityBeijing100191China Beijing Institute of Space Long March Vehicle Beijing100076China The School of Materials Science and Engineering Northeastern UniversityShenyang110819China The State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang110819China Shanghai Spaceflight Precision Machinery Institute Shanghai201600China

The application of Mg alloys is always accompanied by various coating technology, but a reliable model predicting the service life of coatings on Mg alloys is lacking but urgent. In this work, a semi-mechanistic model was proposed to predict the service life of plasma electrolytic oxidation (PEO) coating/electrophoretic coatings on a VW63Z Mg alloy;the model was decomposed into three parts: a first part depicting the degradation time of organic coating (L_(1)) and the diffusion time of electrolyte in the inorganic coating (L_(2)), respectively;a second part interpreting the breakdown of coatings due to the corrosion process (L_(3));a final part establishing an algorithm converting the accelerated tests into the real service environment (α);the effect of structural stress and dissimilar metal joints on the service life of coatings was also considered. Based on the ongoing accelerated experiments, the semi-mechanistic model could be able to predict the service life of both PEO coatings and composite coatings on VW63Z Mg alloy with a satisfiable precision.

关键词： Magnesium alloy Service life prediction Plasma electrolytic oxidation Electrophoretic coating Corrosion resistance

Application of artificial intelligence in diagnosis of pulmonary tuberculosis

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Chinese Medical Journal 2024年第5期137卷 559-561页

作者： jingli Du Yue Su Juan Qiao Shang gao Enjun Dong Ruilan Wang Yanhui Nie Jing Ji Zhendong Wang Jianqin Liang Wenping Gong Tuberculosis Control Team Senior Department of TuberculosisThe Eighth Medical Center of PLA General HospitalBeijing 100091China Department of Computer Science and Technology College of Management Science and EngineeringCapital University of Economics and BusinessBeijing 100071China The Second Ward of Tuberculosis Department Senior Department of TuberculosisThe Eighth Medical Center of PLA General HospitalBeijing 100091China Beijing Key Laboratory of New Techniques of Tuberculosis Diagnosis and Treatment Senior Department of TuberculosisThe Eighth Medical Center of PLA General HospitalBeijing 100091China

Tuberculosis(TB)is an infectious disease caused by Mycobacterium *** the diagnostic technology of pulmonary tuberculosis(PTB)has advanced,accurate and differential diagnoses of PTB are still *** recent years,the rapid development of artificial intelligence(AI)and its wide application in the medical field have provided new opportunities for diagnosing and treating TB and *** machine learning model of AI has not only helped physicians improve diagnostic accuracy,but also enabled them to make early preventive diagnoses for individuals at increased risk of ***,AI can guide physicians to formulate targeted treatment strategies for PTB patients with different conditions.

关键词： tuberculosis diagnosis artificial

重症医学科医院感染控制原则专家共识(2024)

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协和医学杂志 2024年第3期15卷 522-531页

作者：柴文昭刘晶晶王小亭马小军汤铂张青王滨王晓猛朱世宏陈文劲陈祖君杨全会杨荣利丁欣赵华程卫段军高景利刘大为中国医学科学院北京协和医院重症医学科北京100730 中国医学科学院北京协和医院感染内科北京100730 首都医科大学附属北京安贞医院心脏外科危重症中心北京100029 徐州市中心医院重症医学科江苏徐州221009 陆军总医院重症医学科北京100700 首都医科大学宣武医院神经外科ICU 北京100053 国家心血管病中心中国医学科学院阜外医院SICU 北京100037 国家癌症中心国家肿瘤临床医学研究中心中国医学科学院肿瘤医院重症医学科北京100021 大连理工大学附属中心医院重症医学科辽宁大连116033 中日友好医院重症医学科北京100029 开滦总医院重症医学科河北唐山063000

重症患者是医院感染的高危人群,且医院感染会显著增加重症患者的死亡率和治疗成本,因此,在治疗原发疾病的过程中,严格防控新发医院感染是重症患者救治的重要组成部分。重症患者的救治涉及多个环节,需从理论、管理、教育、规范、监督等... 详细信息

重症患者是医院感染的高危人群,且医院感染会显著增加重症患者的死亡率和治疗成本,因此,在治疗原发疾病的过程中,严格防控新发医院感染是重症患者救治的重要组成部分。重症患者的救治涉及多个环节,需从理论、管理、教育、规范、监督等多个层面发挥合力作用,才能实现医院感染的有效防控,但目前医院感染防控尚缺乏统一的认识和规范。为此,2024年3月,国内多名重症医学、感染病学及医院感染相关专家共同探讨了重症医学科医院感染控制现状及其问题,并在参考国内外最新循证医学证据的基础上,形成了《重症医学科医院感染控制原则专家共识(2024)》,以期为重症医学科制订医院感染防控策略提供依据。

关键词：重症医学医院感染感染防控共识

steel surface defect detection and localization based on SVD and two-side compressive measurements

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steel surface defect detection and localization based on SVD...

基于奇异值分解和叠加法的慢速小目标检测算法

第26届中国控制与决策会议

作者： jingli gao Chenglin Wen Meiqin Liu College of Electrical Engineering Zhejiang University College of Electrical Engineering Henan University of Technology

ISBN: (纸本)9781479937097

This paper proposes a method for defect detection and localization based on singular value decomposition and two-side compressive measurements. First, the feasibility of the singular value decomposition for defect detection and localization is analyzed, then the invariance of the geometrical structure of the rows or columns of the raw data and the compressive data is justified, so the energy and pattern contained in the raw data can be transferred into the compressive data and kept in the singular values and singular vectors. On this basis, the proposed defect detection algorithm based on the singular values of compressive data and the proposed defect localization algorithm based on the singular vectors are given without reconstruction of images. Simulation results show that the proposed method based on compressive measurements has a good performance.

关键词： defect detection compressed sensing singular value decomposition random projection

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上海交通大学学报 2015年第6期49卷 876-883页

作者：高敬礼文成林刘妹琴浙江大学电气工程学院杭州310027 杭州电子科技大学自动化学院杭州310018

在图像集同一像素位置噪声满足遍历性的条件下,分析了利用叠加法进行目标检测的可行性,在此基础上提出了一种基于叠加法的慢速小目标检测算法.首先,分析了目标不重叠、完全重叠和部分重叠时,目标合成图像和噪声合成图像的能量变化情况,... 详细信息

在图像集同一像素位置噪声满足遍历性的条件下,分析了利用叠加法进行目标检测的可行性,在此基础上提出了一种基于叠加法的慢速小目标检测算法.首先,分析了目标不重叠、完全重叠和部分重叠时,目标合成图像和噪声合成图像的能量变化情况,分析表明随着叠加次数的增加,噪声合成图像的能量衰减快于目标合成图像,从而保证了合成图像中目标与噪声能量比的增加,为利用叠加法进行目标检测提供了可行性.其次,根据合成图像的奇异值特性,利用标准化奇异值的不均匀变化完成了目标检测.同时,仿真验证了目标合成图像和噪声合成图像的能量衰减情况,分析了叠加次数、目标尺寸与强度对目标可检测性的影响.

关键词：奇异值分解叠加法目标检测

齐次线性方程组解的结构及求解的混合式教学设计

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南阳师范学院学报 2022年第6期21卷 52-57页

作者：谭冰王婷高景利虎大力南阳师范学院数学与统计学院河南南阳473061

线性方程组及其求解是线性代数课程的教学主线和核心内容,具有高度的抽象性和逻辑性,对学生的推理演绎能力、抽象逻辑思维能力有较高的要求.作为线性方程组的特殊情形,齐次线性方程组解的结构和求解是讨论非齐次线性方程组解的结构和求... 详细信息

线性方程组及其求解是线性代数课程的教学主线和核心内容,具有高度的抽象性和逻辑性,对学生的推理演绎能力、抽象逻辑思维能力有较高的要求.作为线性方程组的特殊情形,齐次线性方程组解的结构和求解是讨论非齐次线性方程组解的结构和求解的必备基础.本文围绕以学生为中心的教学理念,结合师范认证、工程认证等专业认证的标准,分别从课前、课中、课后三个阶段探讨“齐次线性方程组解的结构及求解”的线上线下混合式教学设计,为线性代数课程教学改革及学生自主学习能力、小组协作能力、数学思维能力培养提供新的思路和参考.

关键词：齐次线性方程组解的结构混合式教学设计

基于SNA国内知识图谱领域科研合作关系研究

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现代情报 2012年第1期32卷 102-106,112页

作者：高晶利天津师范大学管理学院天津300387

本文首先介绍了社会网络分析方法,并采用该方法分别从"中心性分析"、"凝聚子群分析"、以及"核心——边缘结构分析"3个角度,对CNKI上的知识图谱领域的合著网络进行了实证研究。通过分析,指出了合著网络中高产核心作者,发现了合著网络中... 详细信息

本文首先介绍了社会网络分析方法,并采用该方法分别从"中心性分析"、"凝聚子群分析"、以及"核心——边缘结构分析"3个角度,对CNKI上的知识图谱领域的合著网络进行了实证研究。通过分析,指出了合著网络中高产核心作者,发现了合著网络中的联系凝聚子群,评价了学者在合著网络中的地位。

关键词：社会网络分析知识图谱合著网络可视化