勾引 英文 接头生学术论坛会议手册（11月21日）

烟台大学数学与信息科学学院勾引 英文

第一届接头生学术论坛会议见告

为活跃学术氛围，提高学术水平，促进接头生学术革命才气培养，数学与信息科学学院拟于11月下旬举办“接头生学术论坛”。该论坛旨在为接头生搭建一个大范围、多限制的学术调换平台，促进接头生之间的学术调换和想想碰撞，通过邀请国表里闻明群众的讲座、论述和点评，进行学术素质，达到浩瀚视线，提高革命才气的目的。现将干系现实见告如下：

一、 勾引 英文  参与对象

数学与信息科学学院合座接头生和教师

二、   行为时辰

2020年11月21日

三、   会议款式

1.   邀请论述：拟邀请10名控制闻明群众作念接头生培养或学术论述；

2.   接头生论述：研三每位学生作念学术论述，其它年龄饱读舞学术论述。

四、   报名肯求

请挑升进入论坛论述的接头生，于11月15日下昼4:30之前将“报名登记表”（见附件）发至学院科研通知李凯强老诚（kaiqiangli19@163.com）。

五、   举办单元

烟台大学数学与信息科学学院

方位：烟台大学数学与信息科学学院 大会议室341

 

烟台大学数学与信息科学学院

第一届接头生学术论坛会议见告

会议日程

2020年11月21日

8：30

开幕式，方位：数学学院341，主理东说念主：陈传军

08:30—09:00

1.        接头生处处长姜付义西席言语

2.        院长杨玉军西席言语

3.        合影（数学学院门口）

4.        分组论述运行

 

分组论述1：基础数学主义，会议方位：大会议室341

09:00—10:00

张胜贵（西北工业大学）腾讯会议：664   308 202

Entropies   of graphs， hypergraphs and random graphs

10:00—10:10

茶歇

10:10—11:00

周进鑫（北京交通大学）腾讯会议：664   308 202

Edge-transitive   bi-Cayley graphs

11:00—11:20

于越（烟台大学硕士生）

Controllability   of neighborhood corona product networks

11:20—11:40

张星（烟台大学硕士生）

子群完备码

11:40—12:00

蔡晓霞（烟台大学硕士生）

几许方针下图的边连通性问题以及双罗马完了数

15:00—16:00

李靖建（广西大学）腾讯会议：664   308 202

On   the classification of some symmetric graphs

 

分组论述2：完了论主义，会议方位：非线性完了实验室118

09:00—09:50

满永超（山东大学）腾讯会议：281   913 245

Global   practical tracking for nonlinear systems with unknown input powers using dual   high-gain-based adaptive feedback

09:50—10:10

茶歇

10:10—10:50

刘磊（河海大学）腾讯会议：281   913 245

强化学习旨趣及轮廓

10:50—11:10

钟鹏（烟台大学硕士生）

PUMA560在立地侵犯下的合手取完了

11:10—11:30

胡庆羲（烟台大学硕士生）

Trajectory   planning and tracking control for 6-DOF Stanford Manipulator based on   adaptive sliding mode multi-stage switching control

11:30—11:50

马开法（烟台大学硕士生）

Prescribed   performance control for uncertain flexible-joint robotic manipulators driven   by DC motors

 

分组论述3：计较数学主义，会议方位：小会议室303

09:00—09:50

李剑（陕西科技大学）腾讯会议：100   119 161

浅谈解放流体与多孔介质耦合问题数值才能过火应用接头

09:50—10:10

茶歇

10:10—10:50

晏文璟（西安交通大学）腾讯会议：100   119 161

Shape   optimal design in the incompressible viscous fluids based on the continuous   adjoint method

10:50—11:10

娄玉芝（烟台大学硕士生）

非线性抛物问题和薛定谔问题有限体积元才能高效数值款式

11:10—11:30

王琨（烟台大学硕士生）

Unconditionally   energy stable勾引 英文， splitting schemes for  magneto-hydrodynamic equations

11:30—11:50

宫云杰（烟台大学硕士生）

非线性方程的两网格有限体积元才能

 

分组论述4：应用数学主义，会议方位：大会议室341

14:30—15:30

刘衍胜（山东师范大学）

完备性与Baire纲定理过火应用

15:30—15:40

茶歇

15:40—16:30

杨家青（西安交通大学）腾讯会议:    870   709 590

Uniqueness   and numerical methods for inverse scattering by complex obstacles

16:30—16:50

张博（烟台大学硕士生）

一类奇异的Monge-Ampère方程Dirichlet问题解的最优全局渐近行为

16:50—17:10

陈舒服（烟台大学硕士生）

p-Laplacian椭圆方程大解的全局渐近行为

 

 

 

 

论述摘抄

 

Part I. 群众论述

 

浅谈解放流体与多孔介质耦合问题数值才能过火应用接头

李剑 西席（陕西科技大学）

 

基于解放流体与多孔介质耦合问题数值才能过火应用接头，主要从以下几个方面进行简要陈说：

1. 井筒隔邻的数值才能接头；

2.浅油藏重油搀杂开采数值模拟；

3. 超重油开采化学新才能数值模拟。

 

 

On the classification of some symmetric graphs

李靖建 副西席（广西大学）

 

丝袜av

The graph is called symmetric graph if its graph automorphism group acts transitive on its vertices and arcs. It is well known that the study of symmetric graphs is a hot topic of algebraic graph theory. In particular， the classification and characterization of such graphs has been closely watched， which is recognized hard but of great theoretical. In this talk， we focus on research the classification of symmetric graphs. In particular， we will introduce some commonly methods and share with you our recent results on the classification of symmetry graphs.

 

 

 

强化学习旨趣及轮廓

刘磊 副西席（河海大学）

 

强化学习（Reinforcement Learning），属于一种机器学习架构，亚洲欧美日韩它是通过让智能体（Agent）阻挡地对所处环境（Environment）进行探索和开发并把柄反应的呈报（Reward）进行的一种告诫学习。2016年，谷歌旗下DeepMind团队发布的AlphaGo以4：1的战绩打败了宇宙围棋冠军里李世纪石，引爆了强化学习的发展势头。连年来，无论在科研界也曾工业界，强化学习进展环节的作用。本论述简介强化学习的数学旨趣，以及动态议论、蒙特卡洛、时序差分等基本算法。在时辰允许的情况下，将先容DQN和Actor-Critic等深度强化学习算法。

 

 

完备性与Baire纲定理过火应用

刘衍胜 西席（山东师范大学）

 

本论述先从实数集的完备性讲起，膨胀出一般距离空间的完备性，要点先容完备距离空间的一个环节性质--Baire纲定理过火应用。

 

 

Global practical tracking for nonlinear systems with unknown input powers using dual high-gain-based adaptive feedback

满永超 副接头员（山东大学）

 

This talk is devoted to introducing our recent results on global practical tracking for a class of uncertain nonlinear systems. The typical feature of the systems lies in the presence of serious unknowns in the input powers. A novel dual high-gain-based adaptive control design scheme is successfully developed. Remarkably， a dynamic high gain and a high gain function (of system states and adaptive dynamic) are jointly introduced to endow the controller with powerful ability in compensating the serious system unknowns/uncertainties. Under the designed controller， all the signals of the resulting closed-loop system are bounded and furthermore the tracking error can be driven to any prescribed smallness.

 

 

Shape optimal design in the incompressible viscous fluids based on the continuous adjoint method

晏文璟 西席（西安交通大学）

 

In this talk， we will briefly introduce the optimal design of an immersed body in the viscous and incompressible fluid which is driven by the steady-state Navier-Stokes equations. Based on the continuous adjoint method， the structure of shape gradient for the cost functional is derived by the differentiability of a minimax formulation involving a Lagrange functional with the function space parametrization technique. Moreover， a gradient-type algorithm is employed to solve the shape optimization problem. Finally， the numerical examples demonstrate the feasibility and effectiveness of the proposed algorithm.

 

 

Uniqueness and numerical methods for inverse scattering by complex obstacles

杨家青 副西席（西安交通大学）

 

In this talk， I will give an introduction to inverse problems for PDEs， especially for inverse scattering by acoustic， electromagnetic or elastic waves. Then I will report some recent development on inverse problems for wave scattering by complex obstacles， where some interesting uniqueness theorem and inversion algorithms will be represented.

Entropies of graphs， hypergraphs and random graphs

张胜贵 西席（西北工业大学）

 

 The entropy of a graph is defined as the structural information content of the graph. A variety of graph entropies， have been studied extensively and applied to various fields successfully. In this talk， we will introduce some currently popular graph entropies characterizing graphs numerically， and we also present some recent results on these entropies. 

 

 

Edge-transitive bi-Cayley graphs

周进鑫 西席（北京交通大学）

 

A graph admitting a group H of automorphisms acting semi-regularly on the vertices with exactly two orbits is called a bi-Cayley graph over H. This generalisation of a Cayley graph gives a class of graphs that includes many important examples such as the Petersen graph， the Gray graph and the Hoffman-Singleton graph， and most of the known examples are actually edge-transitive. In this talk， I shall introduce some of our recent work regarding edge-transitive bi-Cayley graphs.

 

 

 

 

 

 

 

 

 

Part II. 学生论述

 

几许方针下图的边连通性问题以及双罗马完了数

蔡晓霞

 

   1966年，Chartrand 给出图的最小度迷漫大时是极大边连通的。自后，许多的数学家借助不同的参量方针分辩给出图是极大边连通的充分条款，举例：2009年，Dankelmann 等东说念主依靠逆度、最小度和极点个数细目一个图是极大边连通的。这里咱们主要利用逆度方针（ ）接头图的极大边连通性和超边连通性问题。论述终末会简要先容一下双罗马完了数。

 

 

p-Laplacian椭圆方程大解的全局渐近行为

陈舒服

 

咱们主要接洽了p-Laplacian椭圆方程大解的最优全局渐近行为， 这里的是中的有界光滑区域， (或)， f在(或)上单调递加且茂盛Keller-Osserman条款， 且在上为正， 但可能在规模上隐匿或爆破. 咱们赋予了新的结构条款， 它在管制方程大解的全局行为的问题上起到了环节的作用.

 

 

 

 

非线性方程的两网格有限体积元才能

宫云杰

 

In this work， we propose a two-grid finite volume element algorithm based on Crank-Nicolson scheme for nonlinear parabolic equations. This method is considered where the nonlinear problem is solved only on a coarse grid of size  and a linear problem based on the coarse-grid solutions and one Newton iteration is considered on a fine grid of size ， which can improve the computing efficiency while keeping the accuracy. It is proved that the two-grid method can obtain asymptotically optimal error estimates in spaces and second order accuracy in time. Meanwhile， a two-grid finite volume element method is proposed for Ginzburg-Landau equation. After the nonlinear problem is solved only on the coarse grid， one Newton iteration is adopted on the fine grid to linearize the fully discrete problem using the corse-grid silution as the initial guess. This method not only keeps the accuracy but also improves the computing efficiency. It is shown that the two-grid method can achieve asymptotically optimal error estimates in -and -norm. Numerical results are provided to verify the theoretical results.

 

 

Trajectory planning and tracking control for 6-DOF Stanford Manipulator based on adaptive sliding mode multi-stage switching control

胡庆羲

 

This paper intends to investigate the trajectory planning and tracking control for six degrees-of freedom (6-DOF) Stanford manipulator consisting of 3-DOF mechanical arm and 3-DOF spherical wrist. By using Denavit-Hartenberg (DH) method， the Euler-Lagrange equations of motion of mechanical arm subsystem and spherical wrist subsystem are established respectively. A new version of backstepping based adaptive sliding mode controller is proposed for trajectory tracking of each subsystem. In order to grasp an object from one point to another， a special smooth continuous trajectory is planned by inverse kinematics analysis which transforms the position of the end-effector in the task space to the joint position in the joint space. After that， a multi-stage switching control strategy is proposed to achieve trajectory tracking control. Simulation results are provided to demonstrate the performance of the proposed control strategy.

 

 

非线性抛物问题和薛定谔问题有限体积元才能高效数值款式

娄玉芝

 

本文将两网格才能分辩应用于求解拟线性抛物问题和线性薛定谔问题。先针对抛物问题建议二阶Crank-Nicolson 两网格有限体积元款式，该款式包含在粗网格空间上求解一个小的原问题，然后在细网格空间上求解一个线性化问题。之后又针对薛定谔问题建议一阶Backward Euler两网格解耦算法，该算法是在粗网格空间上求解原始耦合问题，然后在细网格空间上求解包含了两个稳重Poisson问题的解耦系统。咱们进一步讲解注解了两个款式相应的纰谬估量，终末数值算例考据了表面扫尾，并标明两网格才能在求解非线性问题和耦合问题时，比轨范有限体积元才能，在保持精度的条款下具有更高的计较成果。

 

 

Prescribed performance control for uncertain flexible-joint robotic manipulators driven by DC motors

马开法

 

This paper is devoted to the prescribed performance control for a class of flexible-joint robotic manipulators driven by DC motors. Remarkably， certain transient performances are given aforehand which are jointly considered with some steady ones and hence result into the incapability of traditional control methods on this topic. Moreover， more serious uncertainties are allowed than those of the related literature due to the consideration of the dynamics of joint and motor which introduce essential obstacles in the control design. For this， by using the vectorial backstepping method and the constructive method based on funnel set， a novel prescribed performance control framework is established， and in turn one time-varying controller is explicitly designed which guarantee all the closed-loop system signals are bounded， and particularly， the system output tracks the given reference signal with prescribed accuracy and regulation time. A simulation example is provided to validate the effectiveness of the proposed theoretical results.

 

 

Unconditionally energy stable， splitting schemes for magneto-hydrodynamic equations

王琨

 

   In this paper， we propose first-order and second-order linear， unconditionally energy stable， splitting schemes for solving the Magneto-hydrodynamics (MHD) system. These schemes are based on the projection method for Navier-Stokes equations and implicit-explicit treatments for nonlinear coupling terms. We transform a double saddle points problem into a set of elliptic type problems to solve the MHD system. Our schemes are efficient， easy to implement， and stable.  We further prove that time semi-discrete schemes and fully discrete schemes are unconditionally energy stable. Various numerical experiments， including Hartmann flow and lid driven cavity problems， are implemented to demonstrate the stability and the accuracy of our schemes.

 

 

Controllability of neighborhood corona product networks

于越

 

In this paper， a composite network， which is formed by the neighborhood corona product of two factor networks， is considered. A necessary and sufficient condition to verify the controllability of the network is established through some properties of the factor networks. In addition， some sufficient or necessary conditions are proposed to verify the network controllability more easily. Finally， several examples are presented to demonstrate the effectiveness of our methods.

 

 

一类奇异的Monge-Ampère方程Dirichlet问题解的最优全局渐近行为

张博

 

This paper mainly studies the existence and the optimal global asymptotic behavior of the unique classical convex solution to a singular Dirichlet problem for the Monge-Ampère equation  where  is bounded and strictly convex smooth domain in is a positive and decreasing function in  is a positive function in ， but may vanish or blow up on the boundary. Our method is based on constructing the suitable sub- and sup-solutions. When the parameters on b tend to the corresponding critical values， we reveal the boundary behavior of the such solution.

 

 

 

 

 

 

 

子群完备码

张星

 

若有限群的子群是的某个Cayley图的完备码， 则称为群的子群完备码。完备码(也称作有用完了集或稳重的完备完了集)是图论接头中的一个环节课题， 何况与编码表面、群论有很强的酌量。其中Cayley图中的完备码更是在通讯汇注的假想和分析、资源的优化设立等方面起着至关环节的作用。

咱们当先给出了一些有限群的子群可当作Cayley图完备码的条款， 并利用这些条款分辩具体找出了广义四元数群、半二面体群以及拟二面体群上Cayley图中的总共子群完备码。

 

 

PUMA560在立地侵犯下的合手取完了

钟鹏

 

本文接头了PUMA560在立地侵犯下的合手取完了. 利用动静法和相对通顺将环境中的立地振动拯救为对力矩的立地侵犯并并吞D-H才能和拉格朗日才能拓荒PUMA560的能源学方程. 给定开始(很是)， 合手取点和搁置点， 利用基于三次多项式的旅途议论议论出参考旅途. 基于拓荒的模子， 利用共同李雅普诺夫函数假想立地切换完了器使得机械臂尽可能地按照议论的参考旅途合手取物体， 同期保证闭环系统的总共信号依概率有界. 终末仿真扫尾讲解了完了政策的有用性.