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Boundedness of Calderon-Zygmund operators with finite non-doubling measures

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Frontiers of Mathematics in China 2013年第4期8卷 961-971页

作者： Dachun yang dongyong yang School of Mathematical Sciences Beijing Normal University Laboratory of Mathematics and Complex systems Ministry of Education Beijing 100875 China School of Mathematical Sciences Xiamen University Xiamen 361005 China

Let μ be a nonnegative Radon measure on Rd which satisfies the polynomial growth condition that there exist positive constants Co and n ∈ （0,d） such that, for all x ∈ Rd and r 〉 0, μ（B（x, r））≤ Corn, where B（x, r） denotes the open ball centered at x and having radius r. In this paper, we show that, if μ（Rd）〈∞, then the boundedness of a Calderdn-Zygmund operator T on L2（μ） is equivalent to that of T from the localized atomic Hardy space h1（μ） to L1,∞（μ） or from h1（μ） to L1（μ）.

关键词： Calderon-Zygmund operator localized atomic Hardy space non- doubling measure

An equivalent characterization of BMO with Gauss measure

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Frontiers of Mathematics in China 2017年第3期12卷 749-768页

作者： Zhehui WANG dongyong yang School of Mathematical Sciences Xiamen University Xiamen 361005 China

Let γ be the Gauss measure on Rn. We establish a Calderon- Zygmund type decomposition and a John-Nirenberg type inequality in terms of the local sharp maximal function and the median value of function over cubes. As ... 详细信息

关键词： BMO John-Nirenberg inequality Gauss measure median value,Calderon-Zygmund decomposition sharp maximal function

The role of a drug-loaded poly(lactic co-glycolic acid)(PLGA) copolymer stent in the treatment of ovarian cancer

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Cancer Biology & Medicine 2020年第1期17卷 237-250页

作者： Yanqing Wang Xiaoyin Qiao Xiao yang Mengqin Yuan Shu Xian Li Zhang dongyong yang Shiyi Liu Fangfang Dai Zhikai Tan Yanxiang Cheng Department of Obstetrics and Gynecology Renmin Hospital of Wuhan UniversityWuhan 430060China College of Biology Hunan UniversityChangsha 410082China Department of Obstetrics and Gynecology Renmin Hospital of Peking UniversityBeijing 100044China Department of Obstetrics and Gynecology Taihe HospitalHubei University of MedicineShiyan 442000China

Objectives:Cisplatin(CDDP)is a widely used and effective basic chemotherapeutic drug for the treatment of a variety of tumors,including ovarian ***,adverse side effects and acquired drug resistance are observed in the clinical application of *** a mode of administration that can alleviate side effects and reduce drug resistance has become a promising strategy to solve this ***:In this study,3 D printing technology was used to prepare a CDDP-poly(lactic-co-glycolic acid)(CDDP-PLGA)polymer compound stent,and its physicochemical properties and cytotoxicity were evaluated both in vitro and in ***:The CDDP-PLGA stent had a significant effect on cell proliferation and apoptosis and clearly decreased the size of subcutaneous tumors in nude mice,whereas the systemic side effects were mild compared with those of intraperitoneal CDDP *** with the control group,CDDP-PLGA significantly increased the mRNA and protein levels of p-glycoprotein(P<0.01;P<0.01)and decreased vascular endothelial growth factor mRNA(P<0.05)and protein levels(P<0.01),however,CDDP-PLGA significantly decreased the mR NA and protein levels of p-glycoprotein(P<0.01;P<0.01)and vascular endothelial growth factor(P<0.01;P<0.01),which are associated with chemoresistance,in subcutaneous tumor *** assay results revealed that,in the CDDP-PLGA group,the staining of the proliferation-related genes Ki67 and PCNA were lightly,and the apoptosis-related gene caspase-3 stained ***:PLGA biomaterials loaded with CDDP,as compared with the same amount of free CDDP,showed good efficacy in terms of cytotoxicity,as evidenced by changes in *** local CDDP release can decrease the systemic side effects of this drug and the occurrence of drug resistance and angiogenesis,and improve the therapeutic *** new approach may be an effective strategy for the local treatment of epithelial ovarian cancer.

关键词： 3D printing drug-loaded stent local treatment cisplatin ovarian cancer

A Robust Model Following Control for Plant withUncertain Parameters Based on Genetic Algorithm

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Systems Science and Systems Engineering 1999年第1期9卷 65-72页

作者： ZHANG Xiaojun Yuzo Yamane yang dongyong(Ashikaga Institute of Technology, Ashikaga 326, Japan)

In this paper, an integral-type robust mode following control for Plants with uncertainparameters and nonlinear factors is introduced. An genetic algorithm is also designed for obtaining thecontrol gains. Finally, som... 详细信息

关键词： Robust Model following control Genetic algorithm Uncertainty control system

Prevalence and clinical significance of pathogenic germline BRCA1/2 mutations in Chinese non-small cell lung cancer patients

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Cancer Biology & Medicine 2019年第3期16卷 556-564页

作者： Xingsheng Hu dongyong yang Yalun Li Li Li Yan Wang Peng Chen Song Xu Xingxiang Pu Wei Zhu Pengbo Deng Junyi Ye Hanhan Zhang Analyn Lizaso Hao Liu Xinru Mao Hai Huang Qian Chu Chengping Hu Department of Medical Oncology Cancer HospitalChinese Academy of Medical SciencesBeijing100021China Department of Pulmonary Medicine Second Affiliated Hospital of Fujian Medical UniversityQuanzhou362100China Department of Respiratory Medicine West China HospitalSichuan UniversityChengdu610041China Department ofRespiratory Medicine Daping HospitalChongqing400042China Department of Respiratory Medicine Xinqiao HospitalArmy Medical UniversityChongqing400037China Department of Medical Oncology Tianjin Medical University CancerInstitute and HospitalNational Clinical Research Center for Cancer Key Laboratory of Cancer Prevention and Therapy Tianjin Tianjin's Clinical Research Center for Cancer Tianjin300060China Department of Thoracic Oncology TianjinMedical University General HospitalTianjin300052China Department of Medical Oncology Hunan Cancer HospitalChangsha410006China Department of Pathology Xiangya HospitalCentral South UniversityChangsha410008China Department of Respiratory Medicine Xiangya HospitalCentral South UniversityChangsha410008China Burning RockBiotech Guangzhou510300China Department of Oncology Tongji Hospital of Tongji Medical CollegeHuazhongUniversity of Science and TechnologyWuhan430022China

Objective: Germline alterations in the breast cancer susceptibility genes type 1 and 2, BRCA1 and BRCA2, predispose individuals to hereditary cancers, including breast, ovarian, prostate, pancreatic, and stomach *** evidence suggests inherited genetic susceptibility to lung *** present study aimed to survey the prevalence of pathogenic germline BRCA mutations(gBRCAm) and explore the potential association between gBRCAm and disease onset in Chinese advanced non-small cell lung cancer(NSCLC) ***: A total of 6,220 NSCLC patients were screened using capture-based ultra-deep targeted sequencing to identify patients harboring germline BRCA1/2 ***: Out of the 6,220 patients screened, 1.03%(64/6,220) of the patients harbored the pathogenic gB RCAm, with BRCA2 mutations being the most predominant mutations(49/64, 76.5%).Patients who developed NSCLC before 50 years of age were more likely to carry gBRCAm(P = 0.036).Among the patients harboring classic lung cancer driver mutations, those with concurrent gBRCAm were significantly younger than those harboring the wild-type gBRCA(P = 0.029).By contrast, the age of patients with or without concurrent gBRCAm was comparable to those of patients without the driver mutations(P = 0.972).In addition, we identified EGFR-mutant patients with concurrent gBRCAm who showed comparable progression-free survival but significantly longer overall survival(P = 0.002) compared to EGFR-mutant patients with wild-type germline ***: Overall, our study is the largest survey of the prevalence of pathogenic gBRCAm in advanced Chinese NSCLC *** suggested a lack of association between germline BRCA status and treatment outcome of *** addition,results showed a positive correlation between pathogenic gB RCAm and an early onset of NSCLC.

关键词： Germline BRCA mutations non-small cell lung cancer prevalence BRCA1 BRCA2

交换子在非齐型空间上的Morrey空间中的有界性

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北京师范大学学报（自然科学版） 2005年第5期41卷 449-454页

作者：杨东勇孟岩北京师范大学数学科学学院北京100875

证明了由Calderón-Zygmund算子或分数次积分算子与RBMO(μ)函数以及Lipschitz函数生成的交换子在非齐型空间上的Morrey空间中的有界性.

关键词：交换子 Calderón-Zygmund算子分数次积分算子 RBMO(μ)函数 Lipschitz函数 Morrey空间非齐型空间

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基于边缘计算的移动机器人视觉SLAM方法

高技术通讯 2023年第9期33卷 1000-1008页

作者：徐斌杨东勇浙江工业大学信息工程学院杭州310023

针对计算资源不足的移动机器人,设计并实现了一种基于边缘计算的视觉同步定位与地图构建(VSLAM)系统。在机器人端引入局部地图,实现机器人位姿估计和轨迹实时跟踪的基本功能,并将具有位姿信息的关键帧发送到边缘计算端;边缘计算端完成... 详细信息

针对计算资源不足的移动机器人,设计并实现了一种基于边缘计算的视觉同步定位与地图构建(VSLAM)系统。在机器人端引入局部地图,实现机器人位姿估计和轨迹实时跟踪的基本功能,并将具有位姿信息的关键帧发送到边缘计算端;边缘计算端完成全局地图构建、回环检测、地图优化和更新机器人端局部地图等功能。对VSLAM算法的线程进行解耦,提高算法的并行性;采用带有位姿信息的关键帧改进重定位功能。实验采用TUM数据集进行验证,实验结果表明,本文所设计的方法具有更好的实时性、地图构建精度和鲁棒性;当网络通信失败时,机器人可以实现独立定位和轨迹跟踪的基本功能;当网络通信恢复后,VSLAM系统可以快速恢复地图构建和轨迹跟踪功能。

关键词：边缘计算移动机器人视觉同步定位与地图构建(VSLAM) 云机器人学

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基于轻量级人工免疫计算的混合入侵检测方法

信息与控制 2012年第5期41卷 529-536页

作者：陈晋音杨东勇浙江工业大学信息工程学院浙江杭州310023

针对大规模网络环境下的入侵检测系统需要处理的网络数据含有大量的冗余与噪音的问题,设计了一种基于轻量级人工免疫计算的混合入侵检测方法.利用最小信息熵离散化算法预处理检测数据,根据主元分析算法(PCA)进行特征提取,通过提取特征... 详细信息

针对大规模网络环境下的入侵检测系统需要处理的网络数据含有大量的冗余与噪音的问题,设计了一种基于轻量级人工免疫计算的混合入侵检测方法.利用最小信息熵离散化算法预处理检测数据,根据主元分析算法(PCA)进行特征提取,通过提取特征矩阵降低数据维度;设计了基于否定选择算法的在线检测,对于未知的或者大规模的连接则提取其特征并实现基于人工免疫计算的入侵检测.最后利用进化能力的异常检测器进行训练和检测,并将提取的异常特征模式加入到快速匹配的数据库来及时地更新数据库.仿真实验表明算法能够提高混合检测器系统的检测效率,同时检测速度能够满足实时性的要求.

关键词：轻量级人工免疫计算最小信息熵离散化主元分析算法(PCA) 静态克隆选择算法动态克隆选择算法混合入侵检测系统

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移动机器人网络控制系统设计与实现

科技通报 2014年第1期30卷 153-157,165页

作者：吕海霞杨东勇浙江工业大学信息工程学院杭州310023

设计了一种基于C/S结构的移动机器人网络控制系统。机器人配置的CCD摄像机和激光测距仪采集机器人前方环境的视频信息和机器人与前方障碍物间的距离信息,划分和归并障碍物区域;设计了网络通信的应用层消息格式,把机器人端采集的信息传... 详细信息

设计了一种基于C/S结构的移动机器人网络控制系统。机器人配置的CCD摄像机和激光测距仪采集机器人前方环境的视频信息和机器人与前方障碍物间的距离信息,划分和归并障碍物区域;设计了网络通信的应用层消息格式,把机器人端采集的信息传送给客户端,以可视化的图形方式显示给操作者,辅助操作者对机器人进行远程控制。以AS-R机器人为实验平台,进行了机器人远程控制实验,结果表明系统稳定可靠,达到了机器人远程网络控制的要求。

关键词：移动机器人网络控制系统激光测距仪