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Node Ranking Strategy in Virtual Network Embedding: An Overview

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China Communications 2021年第6期18卷 114-136页

作者： shengchen wu Hao Yin Haotong Cao Longxiang Yang Hongbo Zhu College of Communication and Information Engineering Nanjing University of Posts and TelecommunicationsJiangsuNanjing 210003China Institute of Electronic System Engineering Beijing 10039China The Hong Kong Polytechnic University 26680 KowloonHongkongHong KongChina

Network virtualization(NV)is a highprofile way to solve the ossification problem of the nowadays Internet,and be able to support the diversified network *** NV,Virtual Network Embedding(VNE)problem has been widely considered as a crucial issue,which is aimed to embed Virtual Networks(VNs)onto the shared substrate networks(SNs)***,some VNE approaches have developed Node Ranking strategies to drive and enhance the embedding *** Ranking Strategy rank/sort the nodes according to the attributes of the node,including both residual local attributes(CPU,Bandwidth,storage,Etc.)and the global topology attributes(Number of neighborhood Nodes,Delay to other nodes,Etc.).This paper presents an overview of Node Ranking Strategies in Virtual Network Embedding,and possible directions of VNE Node Ranking Strategy.

关键词： network virtualization virtual network embedding global topology attribute node ranking

重大疫情下高校来华留学生的自我关怀与情绪状态研究

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当代青年研究 2020年第4期 11-17页

作者：张志华蔡特金吴圣宸南京邮电大学教育科学与技术学院南京邮电大学管理学院南京邮电大学海外教育学院

来华留学生作为我国高等教育办学中的一个特殊群体,近年来招生规模稳步增长,新冠肺炎疫情对他们的来华求学之路产生了影响。对南京部分高校来华留学生的问卷调查发现,来华留学生的自我关怀能力较强,但情绪波动较大,其自我关怀与正性情... 详细信息

来华留学生作为我国高等教育办学中的一个特殊群体,近年来招生规模稳步增长,新冠肺炎疫情对他们的来华求学之路产生了影响。对南京部分高校来华留学生的问卷调查发现,来华留学生的自我关怀能力较强,但情绪波动较大,其自我关怀与正性情绪有显著正相关,与负性情绪有显著负相关。面对因疫情产生的负性情绪,来华留学生应积极进行自我情绪疏导,注重自我关怀和情绪管理。学校应实施灵活多元的在线教育管理,加强对留学生的在线学习和生活指导,给予他们思想引导和必要的人文关怀,帮助来华留学生顺利度过疫情期。

关键词：来华留学生自我关怀正性情绪负性情绪

The chemical characteristics of different sodium iron ethylenediaminetetraacetate sources and their relative bioavailabilities for broilers fed with a conventional corn‑soybean meal diet

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Journal of Animal Science and Biotechnology 2024年第2期15卷 826-843页

作者： shengchen Wang Bingxin wu Ling Zhu Weiyun Zhang Liyang Zhang We wu Jiaqi wu Yun Hu Tingting Li Xiaoyan Cui Xugang Luo College of Animal Science and Technology Yangzhou UniversityYangzhou 225000People’s Republic of China Mineral Nutrition Research Division State Key Laboratory of Animal NutritionInstitute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China

Background Our previous studies demonstrated that divalent organic iron(Fe)proteinate sources with higher complexation or chelation strengths as expressed by the greater quotient of formation(Qf)values displayed higher Fe bioavailabilities for *** iron ethylenediaminetetraacetate(NaFeEDTA)is a trivalent organic Fe source with the strongest chelating ligand ***,the bioavailability of Fe when administered as NaFeEDTA in broilers and other agricultural animals remains ***,the chemical characteristics of 12 NaFeEDTA products were *** these,one feed grade NaFeEDTA(Qf=2.07×10^(8)),one food grade NaFeEDTA(Qf=3.31×10^(8)),and one Fe proteinate with an extremely strong chelation strength(Fe-Prot ES,Qf value=8,590)were *** bioavailabilities relative to Fe sulfate(FeSO_(4)·7H_(2)O)for broilers fed with a conventional corn-soybean meal diet were evaluated during d 1 to 21 by investigating the effects of the above Fe sources and added Fe levels on the growth performance,hematological indices,Fe contents,activities and gene expressions of Fe-containing enzymes in various tissues of *** NaFeEDTA sources varied greatly in their chemical *** Fe concentration(PI),transferrin saturation(TS),liver Fe content,succinate dehydrogenase(SDH)activities in liver,heart,and kidney,catalase(CAT)activity in liver,and SDH mRNA expressions in liver and kidney increased linearly(P<0.05)with increasing levels of Fe ***,differences among Fe sources were detected(P<0.05)only for PI,liver Fe content,CAT activity in liver,SDH activities in heart and kidney,and SDH mRNA expressions in liver and *** on slope ratios from multiple linear regressions of the above indices on daily dietary analyzed Fe intake,the average bioavailabilities of Fe-Prot ES,feed grade NaFeEDTA,and food grade NaFeEDTA relative to the inorganic FeSO_(4)·7H_(2)O(100%)for broilers were 139%,155%,and 166%,***

关键词： Broilers Chelation strengths Fe-containing enzymes NaFeEDTA Relative bioavailabilities

Dietary copper requirement of broilers fed a corn-soybean meal diet during 22—42 d of age

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Animal Nutrition 2024年第1期16卷 96-104页

作者： Ling Zhu Wei wu Bingxin wu Yun Hu Liyang Zhang Weiyun Zhang Tingting Li Xiaoyan Cui Feiyu Gao Ding Li Xugang Luo shengchen Wang Poultry Mineral Nutrition Laboratory College of Animal Science and TechnologyYangzhou UniversityYangzhou 225000China Mineral Nutrition Research Division State Key Laboratory of Animal NutritionInstitute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China

This research was to assess the dietary copper(Cu)requirement of broiler chickens fed a practical cornsoybean meal diet during 22—42 d of age.A total of 288 numbered Arbor Acres male broilers at 22 d of age were randomly allotted 6 treatments with 8 replicate cages(6 broilers per cage)per *** were fed a Cu-unsupplemented corn-soybean meal basal diet(control,containing 7.36 mg Cu/kg)or the basal diet added with 3,6,9,12,or 15 mg Cu/kg from CuSO_(4)·5H_(2)O for 21 ***,asymptotic and broken-line models were fitted and the best fitted models were selected to determine dietary Cu *** results revealed that the contents of Cu in serum and liver,m RNA expression levels of Cu-and zinc-containing superoxide dismutase(CuZnSOD)in liver and monoamine oxidase b(MAO B)in heart,as well as protein expression level of CuZnSOD in liver were affected(P<0.05)by supplemental Cu levels,and the above indices varied linearly and quadratically(P<0.05)with increasing Cu *** Cu requirements assessed according to the best fitted broken-line models(P<0.05)of the above indexes were 10.45—13.81 mg/*** was concluded that mRNA expression levels of CuZnSOD in liver and MAO B in heart,as well as liver CuZnSOD protein expression level were new specific sensitive biomarkers for estimating dietary Cu requirements,and the dietary Cu requirement was recommended to be 14 mg/kg to support Cu metabolic needs related to key Cucontaining enzymes in broilers fed the corn-soybean meal diet during 22—42 d of age,which was higher than the dietary Cu requirement(8 mg/kg)for broilers at the corresponding stage suggested by the Chinese Feeding Standard of Chicken.

关键词： Copper Copper content Gene expression of copper-containing enzyme Requirement Broiler

Dynamic intrauterine crosstalk promotes porcine embryo implantation during early pregnancy

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Science China(Life Sciences) 2024年第8期67卷 1676-1696页

作者： Xupeng Zang shengchen Gu Wenjing Wang Junsong Shi Jianyu Gan Qun Hu Chen Zhou Yue Ding Yanjuan He Lei Jiang Ting Gu Zheng Xu Sixiu Huang Huaqiang Yang Fanming Meng Zicong Li Gengyuan Cai Linjun Hong Zhenfang wu State Key Laboratory of Swine and Poultry Breeding Industry National Engineering Research Center for Breeding Swine IndustryCollege of Animal ScienceSouth China Agricultural UniversityGuangzhou 510642China Guangdong Provincial Key Laboratory of Agro-Animal Genomics and Molecular Breeding South China Agricultural UniversityGuangzhou 510642China Yunfu Subcenter of Guangdong Laboratory for Lingnan Modern Agriculture Yunfu 527300China Guangdong Key Laboratory of Animal Breeding and Nutrition Institute of Animal ScienceGuangdong Academy of Agricultural SciencesGuangzhou 510640China Key Laboratory of South China Modern Biological Seed Industry Ministry of Agriculture and Rural AffairsGuangzhou 510520China

Dynamic crosstalk between the embryo and mother is crucial during ***,we comprehensively profile the single-cell transcriptome of pig peri-implantation embryos and corresponding maternal endometrium,identifying 4 different lineages in embryos and 13 cell types in the ***-specific gene expression characterizes 4 distinct trophectoderm subpopulations,showing development from undifferentiated trophectoderm to polar and mural *** expression of genes in different types of endometrial cells illustrates their molecular response to embryos during ***,we developed a novel tool,ExtraCellTalk,generating an overall dynamic map of maternal-foetal crosstalk using uterine luminal proteins as *** cross-species comparisons,we identified a conserved RBP4/STRA6 pathway in which embryonic-derived RBP4 could target the STRA6 receptor on stromal cells to regulate the interaction with other endometrial *** results provide insight into the maternal-foetal crosstalk during embryo implantation and represent a valuable resource for further studies to improve embryo implantation.

关键词： endometrial remodeling ExtraCellTalk implantation maternal-foetal crosstalk trophoblast

1个中国古琴曲的符号化音乐数据集介绍及其应用实例

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复旦学报（自然科学版） 2020年第3期59卷 276-285页

作者：李圣辰吴雨松北京邮电大学信息光子学与光通信研究院北京100876

介绍了1个中国古琴曲的符号化音乐数据集.古琴数据集收集了71首古琴曲,共有408个段落,9860个小节,以MusicXML文件格式储存.首先介绍古琴、古琴音乐与其记谱方式,再介绍古琴数据集的组成与其建立方法,并讨论了古琴数据集的可能应用.最后... 详细信息

介绍了1个中国古琴曲的符号化音乐数据集.古琴数据集收集了71首古琴曲,共有408个段落,9860个小节,以MusicXML文件格式储存.首先介绍古琴、古琴音乐与其记谱方式,再介绍古琴数据集的组成与其建立方法,并讨论了古琴数据集的可能应用.最后给出了1种基于统计模型的巴赫音乐与古琴音乐风格的区分方法作为数据集应用的1个实例.

关键词：符号化音乐数据集古琴旋律音程直方图马尔科夫链 KL散度

基于电路理论的县域生态安全格局构建:以山东省栖霞市为例

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生态学杂志 2024年第10期43卷 3223-3232页

作者：薛明月吴孟泉郑龙啸丁志政王盛臣谢爱民刘佳燕丁敏鲁东大学资源与环境工程学院山东烟台264000 栖霞市自然资源和规划局山东烟台265300 烟台市土地储备和利用中心山东烟台260000 山东恒远地理信息技术有限公司山东济南250000

县域尺度下的生态安全格局构建是当前正开展国土空间规划中的重要组成部分,对区域生态文明建设有重要意义。本研究以山东省栖霞市为例,基于“生态源地提取-综合阻力面构建-生态廊道识别”的框架,运用电路理论模拟生态流动与动物迁徙,识... 详细信息

县域尺度下的生态安全格局构建是当前正开展国土空间规划中的重要组成部分,对区域生态文明建设有重要意义。本研究以山东省栖霞市为例,基于“生态源地提取-综合阻力面构建-生态廊道识别”的框架,运用电路理论模拟生态流动与动物迁徙,识别出生态“夹点”、生态“障碍点”和生态修复分区,使生态安全格局的构建更加可视化、精准化、层次化。结果表明:(1)栖霞市共有生态源地11处,生态廊道20条,其中主要生态廊道7条,潜在生态廊道13条;生态源地数量较少,潜在生态廊道较多,反映出栖霞市生态质量有待改善。(2)共识别出生态“夹点”19处,生态“障碍点”16个,体现了栖霞市生态环境的空间不平衡性。(3)栖霞市生态一级改善区面积为318.65 km^(2),二级改善区面积为437.21 km^(2),三级改善区面积为529.44 km^(2),均存在不同程度的生态问题。因此,栖霞市亟需对“夹点”附近地区生态环境进行改善,提高生态廊道通畅性,并分门别类、因地制宜地对“障碍点”、“断裂点”展开修复工作,提高各源地间景观生态连通性,加强各乡镇间生态协调与生态环境整体性,促进地区可持续性发展。

关键词：生态修复电路理论生态廊道栖霞市

饲粮锌缺乏对22~42日龄肉仔鸡生长性能、小肠形态、屏障功能及空肠中紧密连接蛋白mRNA表达的影响

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动物营养学报 2024年第1期36卷 235-244页

作者：吴伟胡阳阳高飞宇张卫云吴炳鑫张丽阳崔小燕李婷婷汪圣晨胡云罗绪刚扬州大学动物科学与技术学院家禽矿物元素营养实验室扬州225009 中国农业科学院北京畜牧兽医研究所矿物元素营养研究室北京100193

本试验旨在研究饲粮锌缺乏对22~42日龄肉仔鸡生长性能、小肠形态、屏障功能及空肠中紧密连接蛋白mRNA表达的影响。试验选用140只1日龄爱拔益加肉仔鸡公雏,1~21日龄统一饲喂正常添加七水合硫酸锌(ZnSO 4·7H 2O)的试验饲粮(实测锌含量为8... 详细信息

本试验旨在研究饲粮锌缺乏对22~42日龄肉仔鸡生长性能、小肠形态、屏障功能及空肠中紧密连接蛋白mRNA表达的影响。试验选用140只1日龄爱拔益加肉仔鸡公雏,1~21日龄统一饲喂正常添加七水合硫酸锌(ZnSO 4·7H 2O)的试验饲粮(实测锌含量为84.40 mg/kg);22日龄时,从中选取体重接近的112只肉仔鸡,采用单因子完全随机试验设计,随机分为2组(每组7个重复,每个重复8只鸡),对照组饲喂满足肉仔鸡锌需要量的试验饲粮(基础饲粮中添加40 mg/kg锌,实测锌含量为64.36 mg/kg),锌缺乏组饲喂不添加锌的试验饲粮(基础饲粮中不添加锌,实测锌含量为22.23 mg/kg)。试验期42 d。结果表明,与对照组相比:1)锌缺乏组22~42日龄肉仔鸡料重比显著增加(P<0.05);2)锌缺乏组42日龄肉仔鸡十二指肠和空肠隐窝深度显著增加(P<0.05),42日龄肉仔鸡十二指肠、空肠和回肠绒毛高度/隐窝深度以及空肠绒毛高度和绒毛表面积显著降低(P<0.05);3)锌缺乏组42日龄肉仔鸡翅静脉和肝门静脉血清二胺氧化酶活性和异硫氰酸荧光素-葡聚糖含量显著增加(P<0.05);4)锌缺乏组42日龄肉仔鸡空肠中黏膜闭合蛋白-1(Claudin-1)的mRNA表达水平显著降低(P<0.05)。综上所述,饲粮锌缺乏可能通过降低紧密连接蛋白Claudin-1的mRNA表达而损伤肉仔鸡小肠黏膜完整性和屏障功能,进而降低其饲料转化效率。

关键词：锌缺乏肉仔鸡生长性能肠道屏障功能紧密连接蛋白

乙二胺四乙酸铁钠对肉仔鸡生长性能和组织中铜、锌和锰元素沉积的影响

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中国家禽 2024年第3期46卷 30-36页

作者：吴炳鑫朱玲李鼎高飞宇吴伟胡云崔小燕李婷婷张丽阳汪圣晨罗绪刚扬州大学动物科学与技术学院江苏扬州225009 中国农业科学院北京畜牧兽医研究所北京100193

试验旨在研究饲粮添加乙二胺四乙酸铁钠(NaFeEDTA)对肉仔鸡生长性能和不同组织中铜、锌和锰沉积的影响。试验按3(铁源)×3(添加铁水平)+1(不加铁对照组)双因子完全随机试验设计,将560只1日龄AA肉公鸡随机分成10组,每组7个重复,每个重复... 详细信息

试验旨在研究饲粮添加乙二胺四乙酸铁钠(NaFeEDTA)对肉仔鸡生长性能和不同组织中铜、锌和锰沉积的影响。试验按3(铁源)×3(添加铁水平)+1(不加铁对照组)双因子完全随机试验设计,将560只1日龄AA肉公鸡随机分成10组,每组7个重复,每个重复8只鸡,分别饲喂未添加铁的玉米-豆粕型基础日粮(对照组)和在此基础日粮中分别添加20、40和60 mg/kg铁(分别源于硫酸亚铁(FeSO_(4)·7H_(2)O)、饲料级NaFeEDTA和食品级NaFeEDTA的饲粮21 d。结果显示:与FeSO_(4)·7H_(2)O组相比,饲粮添加不同来源的NaFeEDTA对肉仔鸡生长性能无显著影响(P>0.05);食品级和饲料级NaFeEDTA组心脏中铜、胫骨中锌以及肝脏和胫骨中锰元素的含量显著提高(P<0.05)。由此可见,添加NaFeEDTA从整体上促进了肉仔鸡心脏中铜、胫骨中锌以及肝脏和胫骨中锰元素的沉积。

关键词：肉仔鸡乙二胺四乙酸铁钠铁水平生长性能矿物元素沉积

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