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Single-Source Oriented Application Level Multicast

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The Journal of China Universities of Posts and Telecommunications 2004年第Z1期11卷 26-32页

作者： PI ren-jie song Jun-de School of Electrical Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R.China School of Electrical Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R.China

Using application level multicast can partly pad the lack of IP multicast deployment. To perform single-source applications in hierarchical topology, we propose an application level multicast approach, Hierarchical Topology Aware Grouping (HTAG), which exploits information about path overlap among members and topological hierarchy to construct overlay tree at different network layers. We present simulations of both our protocol and the TAG over generated hierarchical topologies. The results indicate the effectiveness of our approach in reducing duplicate packets and preserving available bandwidth, with reasonable delays increase.

关键词： application level multicast hierarchical topology source distribution tree

Electrochemical radical C(sp^(3))-H arylation of xanthenes with electron-rich arenes

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Organic Chemistry Frontiers 2022年第3期9卷 816-821页

作者： Bin Wei Jing-Hao Qin Yong-Zheng Yang Ye-Xiang Xie Xuan-Hui Ouyang ren-jie song Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China

C(sp^(3))-H arylation has recently emerged as a powerful strategy involving new carbon-carbon bond formation for synthesizing complex organic *** herein describe an efficient electrochemical C(sp^(3))-H arylation of xanthenes with arenes proceeding via a radical pathway.A series of 9-aryl-9Hxanthenes were observed to have been produced in the presence of a carbon anode.

关键词： radical carbon herein

Causes and global,regional,and national burdens of traumatic brain injury from 1990 to 2019

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Chinese Journal of Traumatology 2024年第6期27卷 311-322页

作者： Xiao-Fei Huang Shuai-Feng Ma Xu-Heng Jiang ren-jie song Mo Li Ji Zhang Tian-Jing Sun Quan Hu Wen-Rui Wang An-Yong Yu He Li Department of Emergency Surgery The Second Affiliated Hospital of Anhui Medical UniversityHefei230601China Department of Emergency Affiliated Hospital of Zunyi Medical UniversityZunyi563003Guizhou provinceChina

Purpose:Traumatic brain injury(TBI),currently a major global public health problem,imposes a significant economic burden on society and *** aimed to quantify and predict the incidence and severity of TBI by analyzing its incidence,prevalence,and years lived with disability(YLDs).The epidemiological changes in TBI from 1990 to 2019 were described and updated to provide a reference for developing prevention,treatment,and incidence-reducing measures for ***:A secondary analysis was performed on the incidence,prevalence,and YLDs of TBI by sex,age group,and region(n=21,204 countries and territories)between 1990 and 2019 using the Global Burden of Diseases,Injuries,and Risk Factors Study *** in the age-standardized incidence rate due to underlying causes of TBI and proportions of minor and moderate or severe TBI were also ***:In 2019,there were 27.16 million(95%uncertainty intervals(UI):23.36-31.42)new cases of TBI worldwide,with age-standardized incidence and prevalence rates of 346 per 100,000 population(95%UI:298-401)and 599 per 100,000 population(95%UI:573-627),*** 1990 to 2019,there were no significant trends in global age-standardized incidence(estimated annual percentage changes:-0.11%,95%UI:-0.18%--0.04%)or prevalence(estimated annual percentage changes:0.01%,95%UI:-0.04%-0.06%).TBI caused 7.08 million(95%UI:5.00-9.59)YLDs in 2019,with age-standardized rates of 86.5 per 100,000 population(95%UI:61.1-117.2).In 2019,the countries with higher incidence rates were mainly distributed in Central Europe,Eastern Europe,and *** 2019 global age-standardized incidence rate was higher in males than in *** 2019 global incidence of moderate and severe TBI was 182.7 per 100,000 population,accounting for 52.8%of all TBI,with falls and road traffic injuries being the main causes in most ***:The incidence of moderate and severe TBI was slightly higher in 2019,and TBI still accounts for a signi

关键词： Traumatic brain injury Global health Burden of disease

Stochastic Augmented-Based Dual-Teaching for Semi-Supervised Medical Image Segmentation

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Computers, Materials & Continua 2025年第1期82卷 543-560页

作者： Hengyang Liu Yang Yuan Pengcheng ren Chengyun song Fen Luo School of Computer Science and Engineering Chongqing University of TechnologyChongqing400054China College of Artificial Intelligence Chongqing Technology and Business UniversityChongqing400067China

Existing semi-supervisedmedical image segmentation algorithms use copy-paste data augmentation to correct the labeled-unlabeled data distribution ***,current copy-paste methods have three limitations:(1)training the model solely with copy-paste mixed pictures from labeled and unlabeled input loses a lot of labeled information;(2)low-quality pseudo-labels can cause confirmation bias in pseudo-supervised learning on unlabeled data;(3)the segmentation performance in low-contrast and local regions is less than *** design a Stochastic Augmentation-Based Dual-Teaching Auxiliary Training Strategy(SADT),which enhances feature diversity and learns high-quality features to overcome these *** be more precise,SADT trains the Student Network by using pseudo-label-based training from Teacher Network 1 and supervised learning with labeled data,which prevents the loss of rare labeled *** introduce a bi-directional copy-pastemask with progressive high-entropy filtering to reduce data distribution disparities and mitigate confirmation bias in *** the mixed images,Deep-Shallow Spatial Contrastive Learning(DSSCL)is proposed in the feature spaces of Teacher Network 2 and the Student Network to improve the segmentation capabilities in low-contrast and local *** this procedure,the features retrieved by the Student Network are subjected to a random feature perturbation *** two openly available datasets,extensive trials show that our proposed SADT performs much better than the state-ofthe-art semi-supervised medical segmentation *** only 10%of the labeled data for training,SADT was able to acquire a Dice score of 90.10%on the ACDC(Automatic Cardiac Diagnosis Challenge)dataset.

关键词： Semi-supervised medical image segmentation contrastive learning stochastic augmented

C-H Oxidative Radical Coupling/Cyclization: New Strategy for the Synthesis of Cyclic Compounds

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C-H Oxidative Radical Coupling/Cyclization: New Strategy for...

Unsupervised Spatio-Temporal Segmentation for Extracting Moving Objects in Video Sequences

中国化学会第九届全国有机化学学术会议

作者： Ming Hu Yu Liu Zhi-Qiang Wang ren-jie song Jin-Heng Li State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University

＜正＞Cyclization of 1,n-enynes is one of the most rapid and convenient ways to build diverse complex cyclic *** strategies for the 1,n-enyne cyclization reported to date only involve a)direct cyclization with additional reagents（often nucleophiles）,b)cycloisomerization and c)skeletal rearrangement,the majority of which suffer from the requirement of noble transition-metal

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来源： cnki会议评论

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Journal of Shanghai Jiaotong university(Science) 2009年第2期14卷 154-161页

作者：李仁杰余松煜王向文 Institute of Image Communication and information Processing Shanghai Jiaotong University Institute of Image Communication and Information Processing Shanghai Jiaotong University

Extraction of moving objects is an important and fundamental research topic for many video applications. This paper addresses an unsupervised spatio-temporal segmentation scheme to extract moving objects from video *** temporal segmentation localizes moving objects by comparing the motion vector of each block in each frame with the corresponding global motion vector estimated by an outlier rejection(OR) based ***,the temporal compensation utilizing the temporal coherence of moving objects is considered in the temporal segmentation to solve the temporarily stopping *** detected moving regions usually have discontinuous boundaries and some *** regions are then compensated in the spatial domain. In the spatial segmentation,the watershed algorithm considering the global information improves the accuracy of segmentation in the spatial *** modified mean filter is presented to suppress some *** using a fusion module,moving objects are *** on various sequences have successfully demonstrated the validity of the proposed scheme.

关键词： segmentation spatio-temporal region growing outlier rejection watershed

A Suspected Person-to-person Transmission of Avian Influenza A （H7N9） Case in Ward

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Chinese Medical Journal 2017年第10期130卷 1255-1256页

作者： Ze-Hua Zhang Ling-Sheng Meng De-Hua Kong Jun Liu Si-Zhao Li Chao Zhou Juan Sun ren-jie song Jin-Ju Wu Department of Intensive Care Unit Anhui No 2 Provincial People's Hospital Hefei Anhui 230041 China Hefei Center for Disease Control and Prevention Hefei Anhui 230061 China

Since throat swab specimens obtained from three adult Chinese patients were confirmed as an avian-origin influenza A （H7N9） virus by local Centers for Disease Control and Prevention （CDC） in 2013,many confirmed ca... 详细信息

关键词： Avian Influenza H7N9 Person-to-person Transmission

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A Positive Signal

China Today 2025年第1期74卷 24-27页

作者： song jie China Economic Weekly

China removes last curbs on foreign investment in manufacturing to make the industry high-end,intelligent,and *** October,Japanese electronics giant Panasonic Group opened its co-creation center in Shanghai,the group... 详细信息

关键词： finance investment integrating

Transition Metal-Catalyzed C（sp~3）-H Oxidation

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Transition Metal-Catalyzed C（sp~3）-H Oxidation