检索结果-南通市图书馆

The clinical prospect of FLASH radiotherapy

在线全文

学校读者我要写书评

暂无评论

Radiation Medicine and Protection 2023年第4期4卷 190-196页

作者： Jiyuan Liu Guangming Zhou hailong pei State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionSuzhou Medical College of Soochow UniversitySuzhou 215123China

FLASH radiotherapy(FLASH-RT)is a new strategy for tumor treatment with an ultra-high dose rate of more than 40 Gy/*** with conventional radiotherapy(CONV-RT),FLASH-RT has no different inhibitory effects on tumors but less damage to normal tissues,which is called the“spare”***“spare”effect triggers our exploration of the great prospect of subverting conventional radiotherapy and its intricate *** homeostasis,the immune microenvironment,or DNA integrity may potentially represent the primary breakthrough direction in understanding the ***,it is imperative to advance timely clinical translation *** trials of FLASH-RT have progressed to Phase II in both the United States and Switzerland,with current findings suggesting that FLASH-RT achieves comparable efficacy to CONV-RT while mitigating side effects in select cancer cell *** summarizing the existing FLASH experiments,this paper emphasizes the significance of clinical transformation and the challenges that will be faced and proposes possible solutions.

关键词： Radiotherapy FLASH-RT Oxygen depletion Immune microenvironment Clinical translation

The role of bacteria and its derived biomaterials in cancer radiotherapy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Pharmaceutica Sinica B 2023年第10期13卷 4149-4171页

作者： Yu Zhang Ruizhe Huang Yunchun Jiang Wenhao Shen hailong pei Guanglin Wang pei pei Kai Yang State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection&School for Radiological and Interdisciplinary Sciences(RAD-X)Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China Teaching and Research Section of Nuclear Medicine School of Basic Medical SciencesAnhui Medical UniversityHefei 230032China

Bacteria-mediated anti-tumor therapy has received widespread attention due to its natural tumor-targeting ability and specific immune-activation *** has made significant progress in breaking the limitations of monotherapy and effectively eradicating tumors,especially when combined with traditional therapy,such as *** to their different biological characteristics,bacteria and their derivatives can not only improve the sensitivity of tumor radiotherapy but also protect normal ***,genetically engineered bacteria and bacteria-based biomaterials have further expanded the scope of their applications in *** this review,we have summarized relevant researches on the application of bacteria and its derivatives in radiotherapy in recent years,expounding that the bacteria,bacterial derivatives and bacteria-based biomaterials can not only directly enhance radiotherapy but also improve the anti-tumor effect by improving the tumor microenvironment(TME)and immune ***,some probiotics can also protect normal tissues and organs such as intestines from radiation via anti-inflammatory,anti-oxidation and apoptosis *** conclusion,the prospect of bacteria in radiotherapy will be very extensive,but its biological safety and mechanism need to be further evaluated and studied.

关键词： Bacterial therapy Radiotherapy Engineered bacteria Bacteria-based biomaterials Radio-protector Radio-sensitization Radiation-activation Synergy effect

Object tracking based on particle filter with discriminative features

在线全文

学校读者我要写书评

暂无评论

控制理论与应用（英文版） 2013年第1期11卷 42-53页

作者： Yunji ZHAO hailong pei Key Laboratory of Autonomous Systems and Networked Control (Ministry of Education) South China University of Technology

This paper presents a particle filter-based visual tracking method with online feature selection mechanism. In color-based particle filter algorithm the weights of particles do not always represent the importance correctly, this may cause that the object tracking based on particle filter converge to a local region of the object. In our proposed visual tracking method, the Bhattacharyya distance and the local discrimination between the object and background are used to define the weights of the particles, which can solve the existing local convergence problem. Experiments demonstrates that the proposed method can work well not only in single object tracking processes but also in multiple similar objects tracking processes.

关键词： Histogram of oriented gradients Local discrimination Particle filter Multiple object tracking

Parameter Identification of JONSWAP Spectrum Acquired by Airborne LIDAR

在线全文

学校读者我要写书评

暂无评论

Journal of Ocean University of China 2017年第6期16卷 998-1002页

作者： YU Yang pei hailong XU Chengzhong Key Laboratory of Autonomous Systems and Networked Control Ministry of EducationSouth China University of Technology LAGEP Batiment CPEUniversité Claude Bernard Lyon 1

In this study, we developed the first linear Joint North Sea Wave Project(JONSWAP) spectrum(JS), which involves a transformation from the JS solution to the natural logarithmic scale. This transformation is convenient for defining the least squares function in terms of the scale and shape parameters. We identified these two wind-dependent parameters to better understand the wind effect on surface waves. Due to its efficiency and high-resolution, we employed the airborne Light Detection and Ranging(LIDAR) system for our measurements. Due to the lack of actual data, we simulated ocean waves in the MATLAB environment, which can be easily translated into industrial programming language. We utilized the Longuet-Higgin(LH) random-phase method to generate the time series of wave records and used the fast Fourier transform(FFT) technique to compute the power spectra density. After validating these procedures, we identified the JS parameters by minimizing the mean-square error of the target spectrum to that of the estimated spectrum obtained by FFT. We determined that the estimation error is relative to the amount of available wave record data. Finally, we found the inverse computation of wind factors(wind speed and wind fetch length) to be robust and sufficiently precise for wave forecasting.

关键词： JONSWAP spectrum parameter identification least square method airborne LIDAR

Anti-windup-based Dynamic Controller Synthesis for Lipschitz Systems under Actuator Saturation

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2015年第4期2卷 358-365页

作者： Naizhou Wang hailong pei Yong Tang Key Laboratory of Autonomous Systems and Networked Control Ministry of EducationSouth China University of Technology Key Laboratory of Surface Functional Structure Manufacturing of Guangdong Higher Education Institutes School of Mechanical and Automotive EngineeringSouth China University of Technology

This paper presents a new method for simultaneous synthesis of dynamic controller and static anti-windup compensator for saturated Lipschitz systems. Thanks to the reformulated Lipschitz property, the Lipschitz systems can be transformed into LPV (linear parameter-varying) systems whose system matrices are affine in a parameter matrix. Based on the modified sector condition dealing with saturation nonlinearity, the design of a nonlinear anti-windup-based controller leads to the solvability of a set of bilinear matrix inequalities (BMI) on the vertices of a bounded convex set which can be solved by the so-called iterative linear matrix inequality (ILMI) algorithm. A numerical example is presented to illustrate the effectiveness of the proposed method. © 2014 Chinese Association of Automation.

关键词： Controllers Iterative methods Linear algebra Matrix algebra Numerical methods Set theory Synthesis (chemical)

Design of Yaw Controller for a Small Unmanned Helicopter Based on Improved ADRC

在线全文

学校读者我要写书评

暂无评论

Guidance, Navigation and Control 2021年第4期1卷 7-25页

作者： Linjie Huang hailong pei Key Laboratory of Autonomous Systems and Networked Control Ministry of EducationUnmanned Aerial Vehicle Systems Engineering and Technology Research Center of GuangdongSouth China University of TechnologyGuangzhou 510640P.R.China

Yaw control is signi¯cant to the attitude control of small unmanned helicopters(SUHs).Since the existing robust control method cannot be applied to the SUH with unknown dynamics and disturbances,this paper proposes an improved active disturbance rejection control(IADRC)to solve the *** IADRC obtains the optimal solution of the actuator gain(b0)by gradient ***,this paper summarizes some experiences during the tuning process of ADRC,which signi¯cantly reduces the di±culty of designing ***,the experimental results show that the proposed method is better than the traditional PID in robust and tracking control performance.

关键词： Yaw control small unmanned helicopter active disturbance rejection control gradient descent

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

结合空间插值的水污染浓度边界跟踪

中山大学学报（自然科学版）（中英文） 2022年第2期61卷 171-179页

作者：张谦裴海龙邬依林广东第二师范学院计算机科学系广东广州510303 华南理工大学/自主系统与网络控制教育部重点实验室/广东省无人机系统工程技术研究中心广东广州510640

针对水污染扩散浓度边界跟踪的问题,通过随机采样以及比较不同的拟合参数,对浓度场进行地统计学空间插值运算,重构污染源扩散浓度场,再根据浓度场重构时参数拟合的结果,采用模型预测控制方式,对水面移动机器人移动轨迹进行寻优,控制移... 详细信息

针对水污染扩散浓度边界跟踪的问题,通过随机采样以及比较不同的拟合参数,对浓度场进行地统计学空间插值运算,重构污染源扩散浓度场,再根据浓度场重构时参数拟合的结果,采用模型预测控制方式,对水面移动机器人移动轨迹进行寻优,控制移动机器人移动并最终实现对污染扩散边界进行跟踪。仿真结果表明,该方法能够准确预测浓度场分布,并使得移动机器人快速跟踪到既定浓度边界,验证了该方法的有效性。

关键词：浓度场空间插值模型预测控制浓度边界

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

基于深度学习的无人机单目视觉避障算法

华南理工大学学报（自然科学版） 2022年第1期50卷 101-108,131页

作者：张香竹张立家宋逸凡裴海龙华南理工大学自动化科学与工程学院广东广州510640 广东工业大学计算机学院广东广州510006

针对基于单目视觉的无人机(UAV)避障问题,本研究提出基于单目深度估计和目标检测的四旋翼自主避障方法。其中,单目深度估计模型提供障碍物像素级别的深度信息,目标检测模型提供障碍物的位置信息。单张红绿蓝(RGB)图像的深度图和目标检... 详细信息

针对基于单目视觉的无人机(UAV)避障问题,本研究提出基于单目深度估计和目标检测的四旋翼自主避障方法。其中,单目深度估计模型提供障碍物像素级别的深度信息,目标检测模型提供障碍物的位置信息。单张红绿蓝(RGB)图像的深度图和目标检测结果由卷积神经网络(CNN)获得;图像的区域划分以目标检测结果为依据,区域深度以深度估计结果为计算依据;规划算法依据区域深度和区域划分结果计算无人机的线速度和角速度,实现无人机的自主避障。为验证算法的自主避障性能,采用Parrot Bebop2无人机对本研究提出的算法与直飞算法进行实飞对比实验。结果表明:本研究提出的算法可用于四旋翼无人机的低速自主避障。

关键词：无人机四旋翼单目避障算法卷积神经网络深度估计目标检测

在线全文

学校读者我要写书评

暂无评论

复合神经网络控制器及其存在性的证明

华南理工大学学报（自然科学版） 1999年第2期27卷 1-6页

作者：裴海龙华南理工大学自动控制系

本文提出网络可分性的概念，并对由此引出的一类复合网络控制器的存在性作了详细的讨论，为复杂问题的网络方法从理论上提供了一种可行的模式．

关键词：神经网络复合网络控制器网络可分性自动控制