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深度学习在糖尿病视网膜病变分级中的应用

计算机系统应用 2024年第1期33卷 231-244页

作者：张志强赵可辉牛惠芳张子宇周连田山东中医药大学智能与信息工程学院济南250355 山东中医药大学第二附属医院特检科济南250002 山东省药品不良反应监测中心济南250014 菏泽市中医医院碎石科菏泽274035

近年来,糖尿病视网膜病变(diabetic retinopathy,DR)成为全球失明人口增加的主要原因,早期的DR严重程度分级对防止DR患者视力丧失尤为重要.由于糖尿病患者数量的逐年上升,DR分级的需求量也不断增加,然而传统的人工分级不能满足日益增长... 详细信息

近年来,糖尿病视网膜病变(diabetic retinopathy,DR)成为全球失明人口增加的主要原因,早期的DR严重程度分级对防止DR患者视力丧失尤为重要.由于糖尿病患者数量的逐年上升,DR分级的需求量也不断增加,然而传统的人工分级不能满足日益增长的需求,且人工分级耗时费力.深度学习技术的发展,为DR检测和分级提供了高效率且更可靠的手段.虽然,目前的DR二元检测已经取得十分好的效果,然而由于糖尿病视网膜病变的复杂性和病变程度之间的差距细微,DR严重程度分级仍然是一个具有挑战性的问题.本文对近年来涌现的DR分级方法进行了研究和总结:介绍了基于VGG、InceptionNet、ResNet、EfficientNet、DenseNet、CapsNet模型的6种深度学习分级方法;并介绍了基于多网络融合的DR分级方法;最后对基于深度学习的DR分级方法的研究趋势进行总结和展望.

关键词：糖尿病视网膜病变深度学习卷积神经网络多网络融合多标签分类

Cotton textile industry:Abandoning the volume-biased production and focusing on high-end route Interview with Ye Jianchun,vice president of China Cotton Textile Association

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China Textile 2016年第1期 19-21页

作者： niu fang Xu Yuanyuan

If you want to make a list of difficulty-ridden industrial manufacturing sectors in various fields in China,the whole textile industry cannot be in the column,but its cotton textile sector must be in the *** comes as no news at all in the whole textile industry that its cotton textile sector is running in difficulty,as is handicapped by the three years of cotton purchase and reserve policy。

关键词： cotton Cotton sector difficulty purchase focusing comes running president Southeast

Man-made fibers:Quantity reduction & quality improvement Interview with Duan Xiaoping,President of China Chemical Fibers Association

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China Textile 2016年第1期 22-25页

作者： niu fang Zhao Zihan

Man-made fibers,as a huge part in the downstream of textile industrial chain,are shouldering the heavy responsibility of raw material supply of the entire *** the12th Five-Year Program period,China’s manmade fiber industry suffered pressures from industrial structure adjustment and continued downward operation while completing its industrial *** enterprises generally felt tired to live;nevertheless,without any weakening of confidence in the future of the industry.

关键词： responsibility downstream tired weakening adjustment suffered continued confidence downward please

New materials,New momentum & New trends

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China Textile 2017年第10期 18-21页

作者： niu fang Shen Da

The world New Fiber Materials Forum ＆ the 23rd China International Man-made Fiber Conference Xiaoshan 2017）China is faced with external and internal development pressures,where the world economy is gestating depth adjustment to accelerate the upgrade of manufacturing industry,while China＇s economy has entered the new normal to promote the supply-side structural reform.

关键词： adjustment momentum upgrade faced textiles accelerate fabric president exceed upgrading

Chemical fibers:To "decelerate" the development in the next five years Interview with Duan Xiaoping,President of China Chemical FibersAssociation

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China Textile 2015年第11期 46-47页

作者： niu fang Zhao Zihan

"China’s chemical fiber industry has witnessed remarkable achievements based on the development of the 12th Five-Year Program,which can be briefly described into such three points:the first is the gradually established global leading position in conventional fiber production field;the second is large-scale manufacturing of high-performance fibers that have sharply narrowed the gap between China and the developed

关键词： decelerate Chemical fibers

Save plastic trash disaster:recycling fiber faces shuffle of the industry

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China Textile 2017年第10期 32-33页

作者： niu fang Shen Da

In recent years,with the concept of green development and the basic national policy of conserving resources and protecting the environment,China speeds up the construction of a resource-saving and environment-friendly... 详细信息

关键词： recycling shuffle disaster polyester friendly recycled renewable protecting harmonious listed

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一个集成的战略信息系统规划框架

清华大学学报（自然科学版） 2006年第Z1期46卷 897-901页

作者：李东牛芳北京大学光华管理学院信息系统与物流管理系北京100871

随着信息技术在企业越来越广泛的应用,信息系统的作用也提高到战略的层次。能否有效地从战略层次上来规划信息系统对于企业实现其商业战略、获得竞争优势有着至关重要的作用。然而,很少有满意的规划信息系统的框架和方法。因此,提出了... 详细信息

随着信息技术在企业越来越广泛的应用,信息系统的作用也提高到战略的层次。能否有效地从战略层次上来规划信息系统对于企业实现其商业战略、获得竞争优势有着至关重要的作用。然而,很少有满意的规划信息系统的框架和方法。因此,提出了一个由规划目标、规划流程、规划机制、规划输出和规划实施5个侧面集成的战略信息系统规划框架;讨论了规划流程和规划机制及其组成要素和维度;最后从规划实施的角度分析了规划输出的内容。运用该框架将有助于提高企业信息化的内在一致性和外在有效性,促进企业信息系统实施的成功。

关键词：战略信息系统规划集成框架规划过程

Tissue adhesive,ROS scavenging and injectable PRP-based‘plasticine’for promoting cartilage repair

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Regenerative Biomaterials 2024年第1期3卷 94-107页

作者： Shiao Li Dawei niu Haowei fang Yancheng Chen Jinyan Li Kunxi Zhang Jingbo Yin Peiliang Fu Department of Orthopedics Shanghai Changzheng HospitalNaval Medical UniversityShanghai 200003P.R.China Department of Polymer Materials School of Materials Science and EngineeringShanghai UniversityShanghai 200444P.R.China

Platelet-rich plasma(PRP)that has various growth factors has been used clinically in cartilage ***,the short residence time and release time at the injury site limit its therapeutic *** present study fabricated a granular hydrogel that was assembled from gelatin microspheres and tannic acid through their abundant hydrogen *** microspheres with the gelatin concentration of 10wt%and the diameter distribution of 1-10 lm were used to assemble by tannic acid to form the granular hydrogel,which exhibited elasticity under low shear strain,but flowability under higher shear *** viscosity decreased with the increase in shear ***,the granular hydrogel exhibited self-healing feature during rheology ***,granular hydrogel carrying PRP not only exhibited well-performed injectability but also performed like a‘plasticine’that possessed good *** granular hydrogel showed tissue adhesion ability and reactive oxygen species scavenging *** hydrogel carrying PRP transplanted to full-thickness articular cartilage defects could integrate well with native cartilage,resulting in newly formed cartilage articular fully filled in defects and well-integrated with the native cartilage and subchondral *** unique features of the present granular hydrogel,including injectability,plasticity,porous structure,tissue adhesion and reactive oxygen species scavenging provided an ideal PRP carrier toward cartilage tissue engineering.

关键词： cartilage regeneration granular hydrogel gelatin tannic acid PRP

Helmholtz decomposition with a scalar Poisson equation in elastic anisotropic media

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Petroleum Science 2024年第3期21卷 1597-1610页

作者： Xin-Yu fang Gang Yao Qing-Qing Zheng Ping-Min Zhang Di Wu Feng-Lin niu State Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing102249China Unconventional Petroleum Research Institute China University of Petroleum(Beijing)Beijing102249China Department of Mathematics College of ScienceChina University of Petroleum(Beijing)Beijing102249China College of Geophysics China University of Petroleum(Beijing)Beijing102249China Department of Earth Environmental and Planetary SciencesRice UniversityHoustonTX77005UA

P-and S-wave separation plays an important role in elastic reverse-time *** can reduce the artifacts caused by crosstalk between different modes and improve image *** addition,P-and Swave separation can also be used to better understand and distinguish wave types in complex *** present,the methods for separating wave modes in anisotropic media mainly include spatial nonstationary filtering,low-rank approximation,and vector Poisson *** of these methods require multiple Fourier transforms or the calculation of large matrices,which require high computational costs for problems with large *** this paper,an efficient method is proposed to separate the wave mode for anisotropic media by using a scalar anisotropic Poisson operator in the spatial *** 2D problems,the computational complexity required by this method is 1/2 of the methods based on solving a vector Poisson ***,compared with existing methods based on pseudoHelmholtz decomposition operators,this method can significantly reduce the computational *** examples also show that the P and S waves decomposed by this method not only have the correct amplitude and phase relative to the input wavefield but also can reduce the computational complexity significantly.

关键词： Anisotropic media Scalar anisotropic Poisson equation Improved elastic wavefield decomposition