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Journal of Innovative Optical Health Sciences 2024年第2期17卷 35-44页

作者： Zenan Zhou huanhuan yu Jiaqing Zhao Xiangning Wang Qiang Wu Cuixia Dai Shanghai Institute of Technology Shanghai P.R.China Shanghai Sixth People'sHospital Affiliated to Shanghai Jiao Tong University School of Medicine Shanghai P.R.China

Diabetic retinopathy(DR)is one of the major causes of visual impairment in adults with *** coherence tomography angiography(OCTA)is nowadays widely used as the golden criterion for diagnosing ***,wide-field OCTA(WF-OCTA)provided more abundant information including that of the peripheral retinal degenerative changes and it can contribute in accurately diagnosing *** need for an automatic DR diagnostic system based on WF-OCTA pictures attracts more and more attention due to the large diabetic population and the prevalence of retinopathy *** this study,automatic diagnosis of DR using vision transformer was performed using WF-OCTA images(12 mm×12 mm single-scan)centered on the fovea as the ***-OCTA images were automatically classified into four classes:No DR,mild nonproliferative diabetic retinopathy(NPDR),moderate to severe NPDR,and proliferative diabetic retinopathy(PDR).The proposed method for detecting DR on the test set achieves accuracy of 99.55%,sensitivity of 99.49%,and specificity of 99.57%.The accuracy of the method for DR staging reaches up to 99.20%,which has been proven to be higher than that attained by classical convolutional neural network *** show that the automatic diagnosis of DR based on vision transformer and WF-OCTA pictures is more effective for detecting and staging DR.

关键词： Wide field optical coherence tomography angiography diabetic retinopathy vision transformer image classification

Effect of Holding Time on the Microstructure and Mechanical Properties of Dual-Phase Steel during Intercritical Annealing

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Journal of Wuhan University of Technology(Materials Science) 2015年第1期30卷 156-161页

作者：李壮 WU Di Lü Wei yu huanhuan SHAO Zhenyao LUO Lei College of Materials Science and Engineering Shenyang Aerospace University State Key Lab of Rolling and Automation Northeastern University College of Graduate Student Shenyang Aerospace University

Continuous annealing simulation tests were conducted by using a continuous annealing thermomechanical simulator. Holding times of 5, 60, 180, and 480 seconds for an intercritical annealing temperature of 820℃ were adopted to investigate the evolution of the mierostructure and mechanical properties of ferrite-bainite dual-phase steel. The ferrite-bainite dual-phase steel was characterized by high strength and low yield ratio due to the presence of the constituents （polygonal ferrite, bainite, martensite and retained austenite） of the steel microstructure. Specimen 3 exhibits the highest value of A50 （7.67%） and a product of Rm × A50 （10453MPa%） after a 180s holding. This is likely attributed to the presence of a C-enriched retained anstenite in the microstructure. And the effect of martensite islands and carbide precipitate is thought to be able to contribute in strengthening the present steel. It is expected that equilibrium of anstenite fraction would be reached for reasonable intercritical holding period, regardless of the heating temperature. The results suggest that long increasing holding times may not be needed because the major phase of the microstructure does not change very significantly. It is favorable for industrial production of DP steels to shorten holding times. Key words： ferrite-bainite dual-phase steel; holding time; martensite islands; mechanical properties

关键词： ferrite-bainite dual-phase steel holding time maxtensite islands mechanical properties

The study on the safety and efficacy of amnion graft for preventing the recurrence of moderate to severe intrauterine adhesions

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Genes & Diseases 2020年第2期7卷 266-271页

作者： Changjiang Li Aiqi Cai Congcong Sun Benyuan Wu Xinpei Chen Yanhua Mao Yingfeng Zhang Yating Gou Jie yu yuhan Wang huanhuan yu Jia Wang Department of Obstetrics and Gynecology University-Town Hospital of Chongqing Medical UniversityChongqingChina

Transcervical resection of adhesion(TCRA)is the standard treatment for the intrauterine adhesions,but the recurrence of adhesions is a tough problem for the *** addition,the therapeutic strategy after TCRA about prevention of recurrence remains controversial especially for the patients with moderate to severe intrauterine adhesions(IUAs).Hence,we designed this study to explore the safety and efficacy of fresh amnion grafts for preventing the recurrence after TCRA for patients with moderate to severe *** hundred patients with moderate to severe IUAs who presented with a history of hypomenorrhea,amenorrhea and infertility were included in the study from January 2015 to December *** were divided into amnion group(52 patients)and chitosan group(48 patients).Fresh amnion grafts or intrauterine injections of chitosan were administered after *** ultrasonography(TVUS)and hysteroscopy were performed at the first and third month after the *** surgical procedures for all patients were completed successfully without relevant *** amnion group,8 patients exhibited relapse in the first month and 2 patients in three months after surgery;in chitosan group,23 women exhibited relapse in the first month and 18 patients in three months after *** analysis revealed that the recurrence rate of adhesion in amnion group was significantly lower than those of chitosan group in the first and three months after surgery(P1=0.000,P2=0.000).After TCRA,fresh amnion graft plays a significant role in preventing further adhesions than injections of chitosan.

关键词： Amnion graft Asherman’s syndrome Intrauterine adhesions Recurrence of adhesion Transcervical resection of adhesion

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参数字典稀疏表示的完全无监督域适应

计算机科学与探索 2019年第5期13卷 822-833页

作者：余欢欢陈松灿南京航空航天大学计算机科学与技术学院南京211106

无监督域适应(unsupervised domain adaptation,UDA)针对的是源域有标记而目标域无标记的学习问题,其目的是利用从标记大样本源域中所学"知识"来促进无标记小样本目标域的学习性能。但现实中也往往存在样本无标记的源域,形成了所谓的完... 详细信息

无监督域适应(unsupervised domain adaptation,UDA)针对的是源域有标记而目标域无标记的学习问题,其目的是利用从标记大样本源域中所学"知识"来促进无标记小样本目标域的学习性能。但现实中也往往存在样本无标记的源域,形成了所谓的完全无监督域适应。该问题给域适应学习带来了严峻的挑战。受先前提出的软大间隔聚类学习(soft large margin clustering,SLMC)启发,提出了一种参数迁移方法——参数字典稀疏表示的完全无监督的域适应方法(whole UDA,WUDA)。SLMC采用分类学习思想在输出(标记)空间中实现给定数据的聚类,在这种实现原理的启发下,从参数(决策函数的权重矩阵)公共字典的角度,在源域和目标域的权重间进行互适应参数字典学习实现知识迁移,同时引入l_(2,1)范数来约束字典系数矩阵,使得各域权重可从公共字典中自适应地选择,从而实现域适应学习。最后,在相关数据集上的实验显示了WUDA在聚类性能上的显著有效性。

关键词：完全无监督域适应(WUDA) 参数公共字典稀疏表示无标记小样本问题软大间隔聚类(SLMC)

Deep tissue super-resolution imaging with adaptive optical two-photon multifocal structured illumination microscopy

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PhotoniX 2023年第1期4卷 1-15页

作者： Chenshuang Zhang Bin yu Fangrui Lin Soham Samanta huanhuan yu Wei Zhang Yingying Jing Chunfeng Shang Danying Lin Ke Si Wei Gong Junle Qu Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Department of Computer Science and Technology Anhui University of Finance and EconomicsBengbu 233030China Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhou 510632China Shenzhen Institute of Neuroscience Shenzhen 518057China MOE Frontier Science Center for Brain Science&Brain-Machine Integration NHC and CAMS Key Laboratory of Medical NeurobiologySchool of Brain Science and Brain MedicineZhejiang UniversityHangzhou 310058China

Visualization of axons and dendritic spines is crucial in neuroscience ***,traditional microscopy is limited by diffraction-limited resolution and shallow imaging depth,making it difficult to study neuronal ***-photon multifocal structured illumination microscopy(2P-MSIM)provides super-resolution imaging along with a reasonably good penetration,but it is vulnerable to optical aberrations in deep *** we present a novel non-inertial scanning 2P-MSIM system incorporated with adaptive optics(AO)which allows for super-resolution imaging with effective aberration *** strategy is designed to correct both laser and fluorescence paths simultaneously using a spatial light modulator and a deformable mirror respectively,providing better results than the individual path *** successful implementation of adaptive optical two-photon multifocal structured illumination microscopy(AO 2P-MSIM)has allowed for the super-resolution imaging of neuronal structures in a mouse brain slice at great depths and dynamic morphological characteristics of zebrafish motoneurons in vivo.

关键词： Super-resolution Adaptive optics In vivo imaging Neurons

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数字金融对居民的债务扩张效应

国际金融研究 2022年第10期 38-48页

作者：丁骋骋余欢欢浙江财经大学金融学院

数字金融在缓解流动性约束、提升居民融资便利的同时,也可能助推居民杠杆率短期内快速攀升。本文利用中国家庭追踪调查(CFPS) 2014年、2016年和2018年三年面板数据,对数字金融的债务扩张效应进行实证分析。研究发现:数字金融的发展显著... 详细信息

数字金融在缓解流动性约束、提升居民融资便利的同时,也可能助推居民杠杆率短期内快速攀升。本文利用中国家庭追踪调查(CFPS) 2014年、2016年和2018年三年面板数据,对数字金融的债务扩张效应进行实证分析。研究发现:数字金融的发展显著推高居民资产负债率,数字金融存在债务扩张效应且具有典型的“长尾”特征;数字金融主要通过支付机制、融资机制和投资机制三种渠道实现债务扩张;数字金融与资产负债率的关系受到传统金融发展的影响,传统金融发展水平越低,数字金融的杠杆提升效应越强。综上,本文认为,满足普惠的需求不一定就是合理的,“数字普惠金融”并不等同于“数字金融”+“普惠群体”。为降低居民负债尤其是“长尾”群体的负债风险,数字金融服务的供给方应精准分析客户需求的合理性,而需求方应加强风险意识,量入为出、合理负债,政府也应加强引导。

关键词：数字金融债务扩张效应 “长尾”特征信贷约束

“三维”转换理论下的《捕蛇者说》三译本比较

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湖北文理学院学报 2021年第1期42卷 50-55页

作者：喻欢欢福建师范大学协和学院外语系福建福州350117

《捕蛇者说》是唐代文学家柳宗元的散文名篇之一,该文短小精悍、构思巧妙、针砭时弊,既有文学价值,又有思想深度,堪称我国古代典籍中的经典之作。关于此文,现有的较有影响力的译本有三:谢百魁译本、罗经国译本和杨宪益、戴乃迭译本。文... 详细信息

《捕蛇者说》是唐代文学家柳宗元的散文名篇之一,该文短小精悍、构思巧妙、针砭时弊,既有文学价值,又有思想深度,堪称我国古代典籍中的经典之作。关于此文,现有的较有影响力的译本有三:谢百魁译本、罗经国译本和杨宪益、戴乃迭译本。文章以此三译本为研究对象,结合生态翻译学“三维”转换理论,比较分析三个译本在语言维、文化维、交际维三方面的适应选择度。对比发现,三译本均达到较高的整体适应选择度,但谢译对原文交际意图的转换最为到位、罗译阅读难度相对最低、杨译的语言风格最接近原文。

关键词：古文英译生态翻译学 “三维”转换理论《捕蛇者说》

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肿瘤合并脑卒中研究进展

中华老年医学杂志 2016年第6期35卷 678-681页

作者：俞欢欢张云云上海中医药大学附属岳阳中西医结合医院神经内科卒中单元 200437

肿瘤和脑卒中均是危害人类的重大疾病，研究显示肿瘤患者较普通人群更易发生脑卒中，本文复习近十年肿瘤合并脑卒中的临床研究，从发生脑卒中的常见肿瘤类型、肿瘤患者发生脑卒中的发病机制、临床特点以及治疗和预后方面综述肿瘤合并脑... 详细信息

肿瘤和脑卒中均是危害人类的重大疾病，研究显示肿瘤患者较普通人群更易发生脑卒中，本文复习近十年肿瘤合并脑卒中的临床研究，从发生脑卒中的常见肿瘤类型、肿瘤患者发生脑卒中的发病机制、临床特点以及治疗和预后方面综述肿瘤合并脑卒中的研究进展，为肿瘤患者脑卒中的防治提供依据.

关键词：肿瘤卒中

微信公众号用户为什么会取消关注?——基于个人—环境—技术理论框架的解释

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现代情报 2023年第6期43卷 78-87页

作者：程慧平蒋星于欢欢西北大学公共管理学院陕西西安710127 江西财经大学信息管理学院江西南昌330032

[目的/意义]从个人、环境和技术3个维度,分析微信公众号用户取消关注意愿影响因素,为公众号运营平台提升用户关注率提供参考。[方法/过程]基于个人—环境—技术(PET)框架,构建微信公众号用户取消关注意愿理论模型。通过网络问卷收集到34... 详细信息

[目的/意义]从个人、环境和技术3个维度,分析微信公众号用户取消关注意愿影响因素,为公众号运营平台提升用户关注率提供参考。[方法/过程]基于个人—环境—技术(PET)框架,构建微信公众号用户取消关注意愿理论模型。通过网络问卷收集到346份有效样本,分别运用结构方程模型(SEM)和模糊集定性比较分析方法(fsQCA)进行数据分析。[结果/结论]①路径分析显示:兴趣转移、期望不一致、技术—任务不匹配、不确定性、公众号关注数量、替代品吸引力均正向影响用户取消关注意愿;②组态分析显示:存在3种影响微信公众号用户取消关注意愿的前因构型。

关键词：微信公众号取消关注意愿个人—环境—技术框架模糊集定性比较分析

习近平生态文明思想及其对全球环境治理的中国贡献

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学习论坛 2022年第1期38卷 22-28页

作者：郇庆治余欢欢北京大学马克思主义学院北京100781

习近平在全球生态环境保护和治理议题尤其是全球气候变化应对和推进可持续发展上的系列阐述,数量众多、持续时间长,不仅构成了习近平总书记关于全球生态文明建设的重要论述的主要内容,而且成为习近平生态文明思想的一个重要方面或维度... 详细信息

习近平在全球生态环境保护和治理议题尤其是全球气候变化应对和推进可持续发展上的系列阐述,数量众多、持续时间长,不仅构成了习近平总书记关于全球生态文明建设的重要论述的主要内容,而且成为习近平生态文明思想的一个重要方面或维度。人类命运共同体是全球生态文明建设的哲学理念基础,共谋、共建、共享是推动全球生态文明建设的基本原则,中国致力于成为全球生态文明建设的重要参与者、贡献者、引领者等主要理论,构成了新时代中国对全球环境治理话语与制度构建的突出贡献。

关键词：习近平生态文明思想全球生态文明建设全球环境治理人类命运共同体中国贡献