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基于CNN和Transformer交叉教学的半监督医学图像分割

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陕西科技大学学报 2025年第1期43卷 185-192页

作者：杨云胡雯青杨虹吴亚男陕西科技大学电子信息与人工智能学院陕西西安710021 西安富德医疗电子有限公司陕西西安710075 西安计量技术研究院陕西西安710199

由于医学图像分割领域缺乏高质量的标注数据,半监督学习方法在医学图像语义分割任务中受到高度重视.为了充分利用卷积神经网络(Convolutional Neural Network,CNN)和Transformer在半监督学习中的优势,本文提出一种基于CNN与Transformer... 详细信息

由于医学图像分割领域缺乏高质量的标注数据,半监督学习方法在医学图像语义分割任务中受到高度重视.为了充分利用卷积神经网络(Convolutional Neural Network,CNN)和Transformer在半监督学习中的优势,本文提出一种基于CNN与Transformer交叉教学的半监督医学图像分割方法.该方法将经典的深度协同训练从一致性正则化简化为交叉教学,利用循环伪标签方案使两个网络的预测差异转换为无监督损失,以鼓励两个网络具有一致的低熵预测.所提方法在ISIC 2018数据集上进行实验,在采用20%的标注比例时,Dice系数和Jaccard系数分别达到87.25%和79.17%,相比于监督U-Net++的训练结果分别提升了2.89%和3.53%,并且优于目前主流的半监督学习方法,验证了所提方法在半监督医学图像分割上的有效性和泛化性.

关键词：半监督学习图像语义分割交叉教学循环伪标签

A NOTE ON THE NONLINEAR CONJUGATE GRADIENT METHOD

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Journal of Computational Mathematics 2002年第6期20卷 575-582页

作者： Dai, Yu-hong Yuan, ya.xiang Chinese Acad Sci Acad Math & Syst Sci Inst Computat Math & Sci Engn Comput State Key Lab Sci & Engn Comput Beijing 100080 Peoples R China

Discusses several aspects of the linear conjugate gradient method for unconstrained optimization problems. General condition concerning the scalar; Convergence of the famous Fletcher-Reeves and Polak-Ribiere-Polya. co... 详细信息

关键词： unconstrained optimization conjugate gradient line search global convergence

A New Inequality for Weakly (K_1,K_2)-Quasiregular Mappings

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Acta Mathematica Sinica,English Series 2007年第12期23卷 2241-2246页

作者： hong ya.GAO Shu Qing ZHOU ChinaCollege of Mathematics and Computer Hebei University Baoding 071002 P. R. Mathematical Study Center of Hebei Province Shijiazhuang 050016 P. R. China College of Mathematics and Computational Sciences Hu'nan Normal University Changsha 410081 P. R. China

We obtain a new inequality for weakly （K1,K2）-quasiregular mappings by using the McShane extension method. This inequality can be used to derive the self-improving regularity of （K1, K2）-Quasiregular Mappings.

关键词： (K1 K2)-Quasiregular mapping regularity McShane extension

Some new integral inequalities for conjugate A-harmonic tensors

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Applied Mathematics(A Journal of Chinese Universities) 2008年第1期23卷 43-50页

作者： GAO hong-ya.HOU Lan-ru College of Math. and Comput. Sci. Hebei University Baoding 071002 China. Mathematics Study Center of Hebei Province Shijiazhuang 050016 China. Beijing Science Technology and Management College Beijing 100086 China.

A new kind of weight-Ar^λ3 （λ1, λ2, Ω）-weight is used to prove the local and global integral inequalities for conjugate A-harmonic tensors, which can be regarded as generalizations of the classical results. Some... 详细信息

关键词： conjugate A-harmonic tensor Ar^λ3 (λ1 λ2 Ω)-weight weighted inequality quasiregular mapping.

基于三矩形谐振腔非通MIM波导的四重法诺传感

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原子与分子物理学报 2025年第3期42卷 116-123页

作者：王叶壮沈宏君陈俊坤王雅雯宁夏大学物理学院银川750000

为了得到高灵敏度的生物传感器,设计了一种可以激发出四重法诺共振的非通金属-绝缘体-金属(Metal-Insulator-Metal,MIM)波导传感器.采用了上下对称结构,由一个竖放矩形谐振腔和两个横放矩形谐振腔与总线波导共同作用而得到了四重法诺共... 详细信息

为了得到高灵敏度的生物传感器,设计了一种可以激发出四重法诺共振的非通金属-绝缘体-金属(Metal-Insulator-Metal,MIM)波导传感器.采用了上下对称结构,由一个竖放矩形谐振腔和两个横放矩形谐振腔与总线波导共同作用而得到了四重法诺共振.采用了有限时域差分方法计算了此结构的传输特性与Z方向的归一化磁场,并详细分析了其法诺共振的产生机理.通过计算结构几何参数调节后的透射光谱,从而得出了四处法诺共振峰透射率和共振位置可以通过改变结构几何参数而获得独立调节.此外还发现在结构中添加不同浓度的葡萄糖溶液可以实现高折射率传感灵敏度(S),获得最高灵敏度2736.98nm/RIU,可以看出此结构对于折射率变化有很高的灵敏度,这为设计和优化纳米级别的折射率传感器提供了新的思路,还可以应用于电路构建前进行性能测试.

关键词：金属-绝缘体-金属传感器谐振腔法诺共振灵敏度

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Weak WT_2-class of differential forms and weakly A-harmonic tensors

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Applied Mathematics(A Journal of Chinese Universities) 2010年第3期25卷 359-366页

作者： GAO hong-ya.WANG ya.-ya. College of Mathematics and Computer Science Hebei University Baoding 071002 China Hebei Provincial Center of Mathematics Shijiazhuang 050016 China

In this paper, we give the definition of weak WT2-class of differential forms, and then obtain its weak reverse Holder inequality. As an application, we give an alternative proof of the higher integrability result of ... 详细信息

关键词： Weak WT2-class of differential forms weak reverse HSlder inequality weakly A-harmonic tensor,higher integrability.

Objective Reduction Solutions to Higher-Order Boussinesq System in (2+1)-Dimensions

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Communications in Theoretical Physics 2009年第1期51卷 47-52页

作者： HU ya.hong ZHENG Chun-Long College of Mathematics and Physics Lishui University Lishui Zhejiang 323000 China Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Shanghai 200072 China

With the help of an objective reduction approach （ORA）, abundant exact solutions of （2＋1）-dimensional higher-order Boussinesq system （including some hyperboloid function solutions, trigonometric function solutions, and a rational function solution） are obtained. It is shown that some novel soliton structures, like single linearity soliton structure, breath soliton structure, single linearity y-periodic solitary wave structure, libration dromion structure, and kink-like multisoliton structure with actual physical meaning exist in the （2＋1）-dimensional higher-order Boussinesq system.

关键词： objective reduction approach higher-order Boussinesq exact solution localized excitation

Design and Implementation of Color Image Encryption Based on Qubit Rotation About Axis

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Chinese Journal of Electronics 2018年第4期27卷 799-807页

作者： LIU Xiande XIAO hong LI Panchi ZHAO ya School of Computer and Information Technology Northeast Petroleum University

Currently, almost all color image encryption/decryption algorithms are designed based on a classical computer, in which the key space is relatively small,and the huge gains from quantum parallelism are not obtained. To address this problem, we propose a novel color image encryption/decryption method based on random rotation of qubit and Quantum Fourier transform(QFT).First, the color image is represented in a quantum superposition state |Image>, in which the color information of each pixel is described by only one qubit |c>. Then, the |c> are randomly rotated on the Bloch sphere about three coordinate axis, and the QFT is performed on the |Image>.Once again, the |c> is randomly rotated on the Bloch sphere and then the inverse QFT is performed on the |Image>,which the encryption process is implemented. The keys are the rotation angles of two above-mentioned *** decryption is the inverse process of the *** method may run on a quantum computer in the future. The simulation results on the classic computer show that our approaches have better security.

关键词： Color image representing Color image encrypting Qubit rotating Quantum Fourier transform Quantum image processing

Application of intraoperative ultrasound in liver surgery

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Hepatobiliary & Pancreatic Diseases International 2021年第5期20卷 501-502页

作者： ya.Wei Xu hong Fu Department of Hepatobiliary Surgery Shaoxing People’s HospitalShaoxing Hospital of Zhejiang UniversityShaoxing 312000China

With the development of color Doppler and laparoscopic ultrasound, now intraoperative ultrasound(IOUS) plays an important role in liver surgery. Compared to percutaneous ultrasound(US), IOUS is conducted directly on the liver surface, with no blind spots or dead ends, thus improves the detection, localization and characterization of lesions without influencing factors, such as obesity.

关键词： surgery liver intraoperative