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Deep learning models for automatic classification ofechocardiographic views

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中国医学影像技术 2024年第8期40卷 1124-1129页

作者： CHEN Wenwen ZHU Ye ZHANG Yiwei WU Chun LI Yuman ZHANG Ziming SUN Zhenxing XIE Mingxing ZHANG Li Department of Ultrasound Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Clinical Research center for Medical Imaging in Hubei Province Wuhan 430022China Hubei Province Key Laboratory of Molecular Imaging Wuhan 430022China

Objective To observe the value of deep learning (DL) models for automatic classification of echocardiographic views. Methods Totally 100 patients after heart transplantation were retrospectively enrolled and divided into training set, validation set and test set at a ratio of 7 ∶ 2 ∶ 1. ResNet18, ResNet34, Swin Transformer and Swin Transformer V2 models were established based on 2D apical two chamber view, 2D apical three chamber view, 2D apical four chamber view, 2D subcostal view, parasternal long-axis view of left ventricle, short-axis view of great arteries, short-axis view of apex of left ventricle, short-axis view of papillary muscle of left ventricle, short-axis view of mitral valve of left ventricle, also 3D and CDFI views of echocardiography. The accuracy, precision, recall, F1 score and confusion matrix were used to evaluate the performance of each model for automatically classifying echocardiographic views. The interactive interface was designed based on Qt Designer software and deployed on the desktop. Results The performance of models for automatically classifying echocardiographic views in test set were all good, with relatively poor performance for 2D short-axis view of left ventricle and superior performance for 3D and CDFI views. Swin Transformer V2 was the optimal model for automatically classifying echocardiographic views, with high accuracy, precision, recall and F1 score was 92.56%, 89.01%, 89.97% and 89.31%, respectively, which also had the highest diagonal value in confusion matrix and showed the best classification effect on various views in t-SNE figure. Conclusion DL model had good performance for automatically classifying echocardiographic views, especially Swin Transformer V2 model had the best performance. Using interactive classification interface could improve the interpretability of prediction results to some extent.

关键词： heart transplantation echocardiography deep learning

Intelligent 3D garment system of the human body based on deep spiking neural network

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虚拟现实与智能硬件（中英文） 2024年第1期6卷 43-55页

作者： Minghua JIANG Zhangyuan TIAN Chenyu YU Yankang SHI Li LIU Tao PENG Xinrong HU Feng YU School of Computer and Artificial Intelligence Wuhan Textile UniversityWuhan 430200China Engineering Research center of Hubei Province for Clothing Information Wuhan 430200China

Background Intelligent garments,a burgeoning class of wearable devices,have extensive applications in domains such as sports training and medical ***,existing research in the smart wearables domain predominantly emphasizes sensor functionality and quantity,often skipping crucial aspects related to user experience and *** To address this gap,this study introduces a novel real-time 3D interactive system based on intelligent *** system utilizes lightweight sensor modules to collect human motion data and introduces a dual-stream fusion network based on pulsed neural units to classify and recognize human movements,thereby achieving real-time interaction between users and ***,the system incorporates 3D human visualization functionality,which visualizes sensor data and recognizes human actions as 3D models in real time,providing accurate and comprehensive visual feedback to help users better understand and analyze the details and features of human *** system has significant potential for applications in motion detection,medical monitoring,virtual reality,and other *** accurate classification of human actions contributes to the development of personalized training plans and injury prevention *** This study has substantial implications in the domains of intelligent garments,human motion monitoring,and digital twin *** advancement of this system is expected to propel the progress of wearable technology and foster a deeper comprehension of human motion.

关键词： Intelligent garment system Internet of things Human action recognition Deep learning 3D visualization

Structural Characteristics and Evolution of a Weighted Sino-US Container Shipping Network

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Chinese Geographical Science 2024年第5期34卷 810-828页

作者： ZHANG Tiantian XI Daping JIANG Wenping FENG Yuhao WANG Chuyuan HU Xini National Engineering Research center of GIS China University of GeosciencesWuhan 430078China School of Geography and Information Engineering China University of GeosciencesWuhan 430078China School of Resources and Environmental Sciences Wuhan UniversityWuhan 430074China

This study selected the Sino-US route data from the top 30 global container liner companies between December 1,2019,and December 29,2019,as the data source utilizing the complex network research *** constructs a Sino-US container shipping network through voyage weighting and analyzes the essential structural characteristics to explore the network’s complex structural *** network’s evolution is examined from three perspectives,namely,time,space,and event influence,aiming to comprehens-ively explore the network’s evolution *** results revealed that:1)the weighted Sino-US container shipping network exhib-its small-world and scale-free *** hub ports in the United States include NEW YORK NY,SAVANNAH GA,LOS ANGELES CA,and OAKLAND CA,whereas SHANGHAI serving as the hub port in *** geographical distribution of these hub ports is uneven.2)Concerning the evolution of the weighted Sino-US container shipping network,from a temporal perspective,the evolution of the regional structure of the entire Sino-US region and the Inland United States is in a stage of radiative expansion and de-velopment,with a need for further enhancement in competitiveness and development *** evolution of the regional structure of southern China and Europe is transitioning from the stage of radiative expansion and development to an advanced equilibrium *** shipping development in Northern China,the Western and Eastern United States,and Asia is undergoing significant changes but faces challenges of fierce competition and *** a spatial perspective,the rationality and effectiveness of the improved weighted Barrat-Barthelemy-Vespignani(BBV)model are confirmed through theoretical *** applicability of the improved evolution model is verified by simulating the evolution of the weighted Sino-US container shipping *** an event impact per-spective,the Corona Virus Disease 2019(COVID-19)pandemic has not fundamentally affecte

关键词： container shipping network structure characteristics network evolution voyage weighting improved Barrat-Barthelemy-Vespignani(BBV)model

Resveratrol combats chronic diseases through enhancing mitochondrial quality

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Food Science and Human Wellness 2024年第2期13卷 597-610页

作者： Weichu Tao Hu Zhang Xia Jiang Ning Chen Tianjiu Research and Development center for Exercise Nutrition and Foods Hubei Key Laboratory of Exercise Training and MonitoringCollege of Sports MedicineWuhan Sports UniversityWuhan 430079China The University Hospital of wuhan Sports University Wuhan 430079China

Resveratrol(RSV),as a functional food component extracted from natural plants,has been widely studied and recognized in preventing and treating various diseases,with major mechanisms including executing anti-inflammation and anti-oxidation functions,and improving mitochondrial *** diseases as non-communicable diseases are mainly caused by multiple factors,such as physiological decline and dysfunction in the body,and have become a significant challenge on public health *** is worth noting that chronic diseases such as Alzheimer's disease(AD),Parkinson's disease(PD),muscle atrophy,cardiovascular disease,obesity,and cancer are accompanied by abnormal mitochondrial ***,targeted regulation of mitochondria may be a meaningful way to prevent and treat chronic *** evidence has confirmed that RSV is actively involved in regulating mitochondria,and it has become an essential consideration to prevent and treat chronic diseases through targeting mitochondria and improving corresponding *** this article,current studies on RSV to optimize mitochondrial quality for preventing and alleviating chronic disease are systematically summarized,which can provide a theoretical reference for the development of functional foods or drugs to combat chronic diseases.

关键词： Resveratrol Functional food Mitochondrial quality Chronic disease Anti-inflammation Anti-oxidation

Improved Variable Forgetting Factor Proportionate RLS Algorithm with Sparse Penalty and Fast Implementation Using DCD Iterations

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China Communications 2024年第10期21卷 16-27页

作者： Han Zhen Zhang Fengrui Zhang Yu Han Yanfeng Jiang Peng GNSS Research center Wuhan UniversityWuhan 430072China School of Information Science and Technology Shijiazhuang Tiedao UniversityShijiazhuang 050043China

The proportionate recursive least squares(PRLS)algorithm has shown faster convergence and better performance than both proportionate updating(PU)mechanism based least mean squares(LMS)algorithms and RLS algorithms with a sparse regularization *** this paper,we propose a variable forgetting factor(VFF)PRLS algorithm with a sparse penalty,e.g.,l_(1)-norm,for sparse *** reduce the computation complexity of the proposed algorithm,a fast implementation method based on dichotomous coordinate descent(DCD)algorithm is also *** results indicate superior performance of the proposed algorithm.

关键词： dichotomous coordinate descent proportionate matrix RLS sparse systems variable forgetting factor

Respiratory Viruses and Mycoplasma Pneumoniae Surveillance Among Hospitalized Children with Acute Respiratory Infections—wuhan City,Hubei Province,China,September-November 2023

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China CDC weekly 2024年第8期6卷 139-142页

作者： Ying Li Yi Yan Jiaming Huang Yue Shi Hui Du Chao Xiong Kai Chen Di Liu Xiaoxia Lu Computational Virology Group Center for Bacteria and Viruses Resources and BioinformationWuhan Institute of VirologyChinese Academy of SciencesWuhan CityHubei ProvinceChina Department of Respiratory Medicine Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan CityHubei ProvinceChina Pediatric Respiratory Disease Laboratory Institute of Maternal and Child HealthWuhan Children's HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan CityHubei ProvinceChina University of Chinese Academy of Sciences BeijingChina CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyCenter for Biosafety Mega-ScienceChinese Academy of SciencesWuhan CityHubei ProvinceChina Data center Wuhan Children’s HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan CityHubei ProvinceChina

Summary What is already known about this topic?Acute respiratory infections(ARIs)are a significant contributor to illness and death in *** has been a notable rise in the occurrence of ARIs and the associated pathogens in China,which has garnered worldwide *** is added by this report?This study conducted a retrospective analysis of the clinical characteristics of children with ARIs in wuhan City from September to November 2023.

关键词： November wuhan Hubei

Legal framework for the sharing of pathogens:Issues and recommendations

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Journal of Biosafety and Biosecurity 2024年第1期6卷 27-33页

作者： Bobo Liu Cui Huang Jingcheng Wu Tianchan Yi Zhiming Yuan wuhan Institute of Virology Chinese Academy of SciencesWuhanHubei 430071China wuhan Documentation and Information center Chinese Academy of SciencesWuhanHubei 430071China Department of health Science Technology and EducationNational Health Commission of the People’s Republic of ChinaBeijing 100088China School of Information Management Central China Normal UniversityWuhanHubei 430079China

The sharing of pathogens is of great significance for the continuous and comprehensive testing and monitoring of viral samples,vaccine and drug development,and the study of drug resistance and mutability of viral *** paper reviews the current legal framework in the field of pathogen sharing,analyzes existing issues,and proposes recommendations to improve the legal framework of pathogen sharing.

关键词： Pathogen sharing Access and benefit sharing International law

Prevalence of post-traumatic stress disorder and depressive symptoms among civilians residing in armed conflict-affected regions:a systematic review and meta-analysis

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General Psychiatry 2024年第3期37卷 324-334页

作者： Syed Hassan Ahmed Aabia Zakai Maha Zahi Muhammad Youshay Jawad Rui Fu Michael Chaiton Dow University of health Sciences KarachiPakistan Department of Psychiatry and Behavioral health Penn State College of MedicineHersheyPennsylvaniaUSA Dalla Lana School of Public health University of TorontoTorontoOntarioCanada institute of mental health Policy Research The Center of Addiction and Mental HealthTorontoOntarioCanada

Background Globally,populations afflicted by armed conflict are known to have high rates of mental health *** This meta-analysis aims to estimate the prevalence of post-traumatic stress disorder(PTSD)and depressive symptoms among civilians residing in armed conflictaffected *** This meta-analysis was conducted in accordance with the Preferred Reporting Items forSystematic Reviews and Meta-Analyses.A literature search employing MEDLINE(R),Embase Classic+Embase,APA PsyclNFO,Ovid healthstar,Journal@Ovid Full Text,Cochrane,PTSDpubs and CINAHL was conducted from inception until 19 March 2024 to identify relevant *** assessment was performed using the Joanna Briggs Institute Critical Appraisal Checklist for Prevalence Studies,and a Comprehensive Meta-Analysiswas usedto conduct the statistical *** The search yielded 38595 articles,of which 57 were considered eligible for *** included studies comprised data from 64596 *** estimated a prevalence of 23.70%(95%CI 19.50%to28.40%)forPTSD symptomsand 25.60%(95%Cl 20.70%to 31.10%)for depressive features among war-afflicted *** subgroup analysis based on time since the war and the country's economic status revealed the highest prevalence for both PTSD and depressive symptoms was present during the years of war and in low/*** The results of this study provide conclusive evidence of the detrimental impacts of armed conflict on mental health ***,it is crucial to emphasise the significance of both physical and mental health in the aftermath of war and take appropriate humanistic measures to overcome challenges in the management of psychiatric illnesses.

关键词： analysis stress armed

Cross-scale mechanical softening of Marcellus shale induced by CO_(2)-water-rock interactions using nanoindentation and accurate grain-based modeling

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Underground Space 2024年第6期19卷 26-46页

作者： Yiwei Liu Quansheng Liu Zhijun Wu Shimin Liu Yong Kang Xuhai Tang School of Civil Engineering Wuhan UniversityWuhan 430072China Department of Energy and Mineral Engineering G3 Center and EMS Energy InstituteThe Pennsylvania State UniversityUniversity ParkPA 16802USA School of Power and Mechanical Engineering Wuhan UniversityWuhan 430072China

Mechanical softening behaviors of shale in CO_(2)-water–rock interaction are critical for shale gas exploitation and CO_(2)*** work investigated the cross-scale mechanical softening of shale triggered by CO_(2)-water–rock ***,the mechanical softening of shale following 30 d of exposure to CO_(2)and water was assessed at the rock-forming mineral scale using *** mechanical alterations of rock-forming minerals,including quartz,muscovite,chlorite,and kaolinite,were analyzed and ***,an accurate grain-based modeling(AGBM)was proposed to upscale the nanoindentation *** models were generated based on the real microstructure of shale derived from TESCAN integrated minerals analyzer(TIMA)digital *** parameters of shale minerals determined by nanoindentation served as input material properties for ***,numerical simulations of uniaxial compression tests were conducted to investigate the impact of mineral softening on the macroscopic Young’s modulus and uniaxial compressive strength(UCS)of *** results present direct evidence of shale mineral softening during CO_(2)-water–rock interaction and explore its influence on the upscale mechanical properties of *** paper offers a microscopic perspective for comprehending CO_(2)-water-shale interactions and contributes to the development of a cross-scale mechanical model for shale.

关键词： Shale Cross-scale modeling Nanoindentation CO_(2)-water-rock interaction Mechanical softening