A Discrete Wavelet Transform and Singular Value Decomposition-Based Digital Video Watermark Method
Digital video watermark is widely used to protect copyright and content authentication. DWT-SVD based method, i.e., discrete wavelet transform (DWT) and singular value …
Impact of Enhanced Wave-Induced Mixing on the Ocean Upper Mixed Layer during Typhoon Nepartak in a Regional Model of the Northwest Pacific Ocean
To investigate the effect of wave-induced mixing on the upper ocean structure, especially under typhoon conditions, an ocean-wave coupled model is used in this study. Two physical …
Chengcheng Yu
Nonlinear Hydroelastic Interaction among a Floating Elastic Plate, Water Waves, and Exponential Shear Currents
Nonlinear hydroelastic interaction among a floating elastic plate, a train of deepwater waves, and a current which decays exponentially with depth is studied analytically. We …
工科研究生《数学物理方程》案例教学研究
《数学物理方程与特殊函数》是理工科研究生重要的公共基础课程之一,它在化学、机电、材 料等领域中有着广泛应用,该课程以从物理学及其他技术科学中产生的偏微分方程为研究对象,对方程 的定解问题的建立过程、典型求解方法及解的定性理论进行分析。基于该课程特点及案例教学法的优 点,本文提出将数学建模思想融入该课程教学的案例教学法,并给出交通、工程技术和环境中的典型教学 …
Xinli Zhang
一种基于胶囊网络的图像检索方法
作为一种新兴的网络结构,胶囊网络用向量输出替代标量输出,能够捕捉图像特征之间的空间关系,改善卷积神经网络的局限性。首先对胶囊网络进行训练实现图像分类,得到图像的预测类标签,判定出查询图像的所属类别,然后将网络的数字胶囊层中的特征参数作为图像的特征向量,在查询图像的所属类别集合中利用图像特征向量找到与查询图像相似的图像。分别在FASHION-MNIST和 …
Jing Huang
基于Angstrom-Prescott模型和空间插值的山东省月太阳辐射再估算
基于Angstrom-Prescott模型和空间插值法构建了山东省各地的月太阳辐射估算方法,并利用山东省3个国家站(济南、莒县和福山)和菏泽、聊城、淄博及青岛的辐射观测数据验证了估算方法的准确性。首先利用山东省3个国家站1992年—2015年的辐射与日照百分率观测数据,采用最小二乘法拟合得到不同月份Angstrom-Prescott模型系数并以2016年观测 …
Renzheng Wang
A Domain-Decomposition Generalized Finite Difference Method for Stress Analysis in Three-Dimensional Composite Materials
In this paper, a new framework for stress analysis of three-dimensional (3D) composite (multi-layered) elastic materials is presented. In our computations, the composite material …
Convolutional Neural Network to Retrieve Water Depth in Marine Shallow Water Area From Remote Sensing Images
The local connection characteristics of convolutional neural network (CNN) are linked with the local spatial correlation of image pixels for water depth retrieval in this article. …
