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On the Backlog and Delay Distributions of Primary and Secondary Users in a Cognitive Radio Network

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China Communications 2010年第5期7卷 23-28页

作者： Gao Yuehong jiang yuming Zhang Xin Wireless Theories and Technologies Lab Beijing University of Posts and Telecommunications Beijing 100876 P. R. China Centre for Quantifiable Quality of Service in Communication Systems Norwegian University of Science and Technology N-7491 Trondheim Norway

In a cognitive radio network, the secondary users can use the spectrum holes when the primary users do not utilize the spectrum, but they must vacant the spectrum when the primary users need to transmit data on the spectrum. In other words, the primary users have higher priority over the secondary users. In this paper, backlog and delay distribution bounds for both primary users and secondary users are obtained. The analysis is based on stochastic network calculus, for which, stochastic service curves are t-n-st derived for both primary users and secondary users, and the network calculus independent case analysis approach is used to find the distribution bounds. Numerical results and simulation results are also presented and discussed.

关键词： cognitive radio probability distrbution stochastic network calculus stochastic service curve independent case analysis

Revealing the Distribution of Aggregation-Induced Emission Nanoparticles via Dual-Modality Imaging with Fluorescence and Mass Spectrometry

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Research 2021年第1期2021卷 826-834页

作者： Liucheng Mao yuming jiang Hui Ouyang Yulin Feng Ruoxin Li Xiaoyong Zhang Zongxiu Nie Yen Wei The Key Laboratory of Bioorganic Phosphorus Chemistry&Chemical Biology(Ministry of Education) Department of ChemistryTsinghua UniversityBeijing 100084China Beijing National Laboratory for Molecular Sciences Key Laboratory of Analytical Chemistry for Living BiosystemsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Innovative Drug and Efficient Energy-Saving Pharmaceutical Equipment Jiangxi University of Traditional Chinese MedicineNanchang 330006China Department of Chemistry Nanchang University999 Xuefu AvenueNanchang 330031China

Aggregation-induced emission nanoparticles(AIE NPs)are widely used in the biomedical ***,understanding the biological process of AIE NPs via fluorescence imaging is challenging because of the strong background and poor penetration ***,we present a novel dual-modality imaging strategy that combines fluorescence imaging and label-free laser desorption/ionization mass spectrometry imaging(LDI MSI)to map and quantify the biodistribution of AIE NPs(TPAFN-F127 NPs)by monitoring the intrinsic photoluminescence and mass spectrometry signal of the AIE *** discovered that TPAFN-F127 NPs were predominantly distributed in the liver and spleen,and most gradually excreted from the body after 5 *** accumulation and retention of TPAFN-F127 NPs in tumor sites were also confirmed in a tumor-bearing mouse *** a proof of concept,the suborgan distribution of TPAFN-F127 NPs in the spleen was visualized by LDI MSI,and the results revealed that TPAFN-F127 NPs were mainly distributed in the red pulp of the spleen with extremely high concentrations within the marginal *** in vivo toxicity test demonstrated that TPAFN-F127 NPs are nontoxic for a long-term *** dual-modality imaging strategy provides some insights into the fine distribution of AIE NPs and might also be extended to other polymeric NPs to evaluate their distribution and drug release behaviors in vivo.

关键词： spleen distribution retention

Prognostic value and nomograms of proximal margin distance in gastric cancer with radical distal gastrectomy

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Chinese Journal of Cancer Research 2020年第2期32卷 186-196页

作者： Jun Luo yuming jiang Xinhua Chen Yuehong Chen Jhang Lopsang Gurung Tingyu Mou Liying Zhao Guoqing Lyu Tuanjie Li Guoxin Li jiang Yu Department of General Surgery Nanfang HospitalSouthern Medical UniversityGuangzhou 510515China Department of Gastrointestinal Surgery Peking University Shenzhen HospitalShenzhen 518036China

Objective:The proximal margin(PM)distance for distal gastrectomy(DG)of gastric cancer(GC)remains *** study investigated the prognostic value of PM distance for survival outcomes,and aimed to combine clinicopathologic variables associated with survival outcomes after DG with different PM distance for GC into a prediction ***:Patients who underwent radical DG from June 2004 to June 2014 at Department of General Surgery,Nanfang Hospital,Southern Medical University were *** first endpoints of the prognostic value of PM distance(assessed in 0.5 cm increments)for disease-free survival(DFS)and overall survival(OS)were *** analysis by Cox proportional hazards regression was performed using the training set,and the nomogram was constructed,patients were chronologically assigned to the training set for dates from June 1,2004 to January 30,2012(n=493)and to the validation set from February 1,2012 to June 30,2014(n=211).Results:Among 704 patients with p TNM stage I,p TNM stage II,T1-2,T3-4,N0,differentiated type,tumor size≤5.0 cm,a PM of(2.1-5.0)cm ***≤2.0 cm showed a statistically significant difference in DFS and OS,while a PM>5.0 cm was not associated with any further improvement in DFS and OS vs.a PM of 2.1-5.0 *** patients with p TNM stage III,N1,N2-3,undifferentiated type,tumor size>5.0 cm,the PM distance was not significantly correlated with DFS and OS between patients with a PM of(2.1-5.0)cm and a PM≤2 cm,or between patients with a PM>5.0 cm and a PM of(2.1-5.0)cm,so there were no significant differences across the three PM *** the training set,the C-indexes of DFS and OS,were 0.721 and 0.735,respectively,and in the validation set,the C-indexes of DFS and OS,were 0.752 and 0.751,***:It is necessary to obtain not less than 2.0 cm of PM distance in early-stage disease,while PM distance was not associated with long-term survival in later and more aggressive stages of disease because more

关键词： Gastric cancer margin distance nomograms distal gastrectomy

Human-based Value Regression of National Well-being & Its Realization

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学术界 2010年第8期 266-269页

作者： Wan Shu jiang yuming Anhui Normal University West - Anhui University

Happiness is a long duration of satisfaction and great fun of life,and a natural wish of pleasant mood to be *** Bentham argued the great happiness to the most common people with the core of happiness *** Mill thought the pursuit of happiness and well-being as people's *** general equilibrium tried to find the optimal balance between efficiency and *** is happiness in welfare *** optimal theory and happiness formula of Samuelson,reflecting the social welfare concept of happiness in economic development,expresses that the ultimate goal of the economic development is dedicated to promoting and improving people's welfare. Unfortunately,the maximization of utility or profit can not achieve the great happiness to most common people,for happiness paradox still exists,the transaction cost theory,systems and behavioral analysis theories can not help meet the preferences of pursuit to happiness for people,which seems to indicate the dead end of the exploration to the preferred or utility in the *** Y-k and Mark Anielski used public welfare or genuine wealth as the social and economic achievements for the share to people,so as to be different GNH from national welfare and the sense of subjective well-being,which seems more conductive to explore the meaning of people-based value and its realization for the sake of national well-being. The discovery of happiness paradox promotes the further exploration for us to ***,the well-being,in essence,reflects the social *** possesses with the nature of social relations and social nature of human beings decides the concept of ***,subjectivity and objectivity are the two important attributes of *** is one of the subjective feeling to the objective being,so that happiness depends on real material world and shows through the subjective spiritual *** himself is the subject of happiness,for well-being of pe

关键词：个人家庭生活感情生活满足感幸福

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单孔胸腔镜技术培训的思考

中国肺癌杂志 2018年第4期21卷 260-264页

作者：朱余明姜格宁同济大学附属上海市肺科医院胸外科上海200433

近年来,单孔胸腔镜技术迅速发展,已成为全球外科发展方向。单孔胸腔镜外科医师的针对性,规范化、系统化培训已成为重要的课题,技术培训是保证手术安全性的必不可少的重要环节。单孔电视胸腔镜技术培训应包括:由临床大中心经验丰富的专... 详细信息

近年来,单孔胸腔镜技术迅速发展,已成为全球外科发展方向。单孔胸腔镜外科医师的针对性,规范化、系统化培训已成为重要的课题,技术培训是保证手术安全性的必不可少的重要环节。单孔电视胸腔镜技术培训应包括:由临床大中心经验丰富的专家直接面对面的教授手术技巧,或聘请专家导师前往学员所在单位进行针对性现场指导,这是一个代表性的、不可缺少的重要环节。网络视频通常也可以作为培训的方式。目前的技术提供了很多模拟训练,诸如:体外模拟器,人工合成胸腔、肺模型,动物实验,3D和VR技术能够为学习者提供各种层面的培训需求。对于大样本量的培训中心,短期的集中培训和中长期的系统性培训目前越来越受关注。根据学员的分级评估,采用多元化的培训模式,因材施教的针对性训练,有助于提高培训效果。我科在单孔胸腔镜外科医师培训方面做了一些工作,积累了一些培训经验,我们认为这样的培训是可行且完全有必要的。

关键词：单孔电视胸腔镜训练教育微创胸外科

单站直达波欺骗干扰检测与抑制的DPCA方法

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系统工程与电子技术 2021年第6期43卷 1524-1532页

作者：姜予名李景文孙兵北京航空航天大学电子与信息工程学院北京100191

针对合成孔径雷达(synthetic aperture radar,SAR)单干扰机直达波欺骗干扰的检测和抑制问题,提出一种基于双通道分置相位中心天线(displace phase-center antenna,DPCA)方法的欺骗干扰检测方法。在DPCA条件下建立了图像域干扰信号模型,... 详细信息

针对合成孔径雷达(synthetic aperture radar,SAR)单干扰机直达波欺骗干扰的检测和抑制问题,提出一种基于双通道分置相位中心天线(displace phase-center antenna,DPCA)方法的欺骗干扰检测方法。在DPCA条件下建立了图像域干扰信号模型,分析表明干扰信号在主辅图像中近似仅存在空变的相位偏置和位置偏移。基于该特征引入图像退化模型,在DPCA检测基础上完成主图像内欺骗干扰的估计与抑制。点阵和面目标仿真结果验证了本文信号模型的正确性和欺骗干扰抑制算法的有效性。所提算法几乎不损失被欺骗干扰遮盖区域的场景信息,能够有效抑制经由天线主瓣或副瓣进入的单站理想直达波欺骗干扰。

关键词：合成孔径雷达直达波欺骗干扰分置相位中心天线图像退化模型