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| 1 | A Survey of Embedding Algorithm for Virtual Network Embedding显示文摘Network virtualization(NV) is pushed forward by its proponents as a crucial attribute of next generation network, aiming at overcoming the gradual ossification of current networks, particularly to the worldwide Internet. Through virtualization, multiple customized virtual networks(VNs), requested by users, are allowed to coexist on the underlying substrate networks(SNs). In addition, the virtualization scheme contributes to sharing underlying physical resources simultaneously and seamlessly. However, multiple technical issues still stand in the way of NV successful implementation. One key technical issue is virtual network embedding(VNE), known as the resource allocation problem for NV. This paper conducts a survey of embedding algorithms for VNE problem. At first, the NV business model for VNE problem is presented. Then, the latest VNE problem description is presented. Main performance metrics for evaluating embedding algorithms are also involved. Afterwards, existing VNE algorithms are detailed, according to the novel proposed category approach. Next, key future research aspects of embedding algorithms are listed out. Finally, the paper is briefly concluded. | Haotong Cao Shengchen Wu Yue Hu Yun Liu Longxiang Yang | 2019 | China Communications2019，16，12： | 5 |
| 2 | Node Ranking Strategy in Virtual Network Embedding: An Overview显示文摘Network virtualization(NV)is a highprofile way to solve the ossification problem of the nowadays Internet,and be able to support the diversified network naturally.In 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)efficiently.Recently,some VNE approaches have developed Node Ranking strategies to drive and enhance the embedding efficiency.Node 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. | Shengchen Wu Hao Yin Haotong Cao Longxiang Yang Hongbo Zhu | 2021 | China Communications2021，18，6： | 3 |
| 3 | Characterization of multiple-antimicrobial resistant Escherichia coli isolates from diseased chickens and swine in China显示文摘 | Hanchun Yang ShengChen DavidG | 2004 | Journal of clini cal microbiology2004，42，8： | 1 |
| 4 | Revealing the correlation between structural evolution and long-term cyclability of the LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)/artificial graphite pouch cells at various rates显示文摘In recent years,researches on improving high-voltage performance of lithium-ion batteries incorporating LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM523)and artificial graphite(AG)have been widely reported.However,limited attentions have been paid to understand the effects and influence mechanisms of charge and discharge rates and charge limit currents on cyclability of NCM523/AG cells.Herein,a∼1.9 Ah NCM523/AG pouch cell is employed,whose electrochemical and structural evolutions after 800 cycles at various rates are comprehensively investigated.We find that cycling performances are strongly influenced by charge rate,followed by limit current and discharge rate.The cell charged at a high rate and cell charged until reaching a low limit current both exhibit low capacity retentions compared to the cell discharged at a high rate.Possible failure reasons are analyzed by advanced characterizations.Results reveal that NCM523 cathodes of the cells deteriorated early experience severe transition metal dissolution,lattice distortion,and partial phase transformation.Meanwhile,the deposited transition metals on AG anodes catalyze the electrolyte consumption,lithium plating and active area loss.Finally,these side reactions notably increase cell impedance and electrochemical polarization.Undoubtedly,these findings clearly outline the challenges and optimization direction for high-rate NCM523/AG cells. | Xu-Feng Zang Shengchen Yang Ying Zou Yingying Zhang Tao Huang Hui-Ling Xia | 2023 | Particuology2023，，10： | 0 |
| 5 | Promoting conservation or change? The UNESCO label of world heritage (re)shaping urban morphology in the Old Town of Lijiang, China显示文摘The UNESCO label of World Heritage can attract a high number of tourists to heritage properties for their Outstanding Universal Values(OUV).Although international studies have demonstrated the World Heritage system can contribute to stimulating cultural tourism and boosting the local economy,how this heritage-led development process promotes urban conservation and morphological changes in cities is yet to be explored adequately.This paper aims to explore the urban morphology of a historic Chinese city after its inscription on the UNESCO World Heritage List,taking the Old Town of Lijiang as case.The methods of spatial plan analysis and discourse analysis are used to analyse the data.The research findings have demonstrated that,theoretically,the Conzenian approach of urban morphology can be an effective framework for World Heritage OUV-monitoring.Methodologically,the analysis of spatial plans and multi-stakeholder interviews can reveal local urban morphology from macro to micro levels.Case-specifically in Lijiang,urban physical characteristics and building structures have been well maintained while traditional social fabric and neighbourhood networks have almost vanished.This research has incorporated the urban morphology approach into(world)heritage management in China,as well as worldwide,in order to maintain the balance between urban conservation and economic growth. | Ji Li Tianchen Dai Shengchen Yin Yiqing Zhao Deniz Ikiz Kaya Linchuan Yang | 2022 | Frontiers of Architectural Research2022，11，6： | 0 |
| 6 | Effects of glass additions on energy storage performance of(Pb_(0.9)7La_(0.02))(Zr_(0.92)Sn_(0.05)Ti_(0.03))O_(3) antiferroelectric thick films显示文摘50μm-thick(Pb_(0.9)7La_(0.02))(Zr_(0.92)Sn_(0.05)Ti_(0.03))O_(3) antiferroelectric(AFE)thick films with different amount of 0.8Pb_O-0.2B_(2)O_(3) glass additions were fabricated by the screen-printing method on alumina substrate,which was pre-coated with Pt as electrode.The effects of glass additions on dielectric properties and energy storage performance were investigated in details.Due to the enhancement of breakdown strength(BDS)of the specimens by the addition of glass,the energy storage performances of the thick films could be greatly improved.As a result,with 3%glass addition,the BDS of the specimens were as high as 475 kV/cm,the maximum polarization of 34.8μC/cm^(2) and the maximum recoverable energy storage density of 7.4 J/cm^(3) were obtained.The results indicated the(Pb_(0.9)7La_(0.02))(Zr_(0.92)Sn_(0.05)Ti_(0.03))O_(3) (PLZST)thick films have a promising potential application in capacitors for pulsed power systems. | Shengchen Chen Tongqing Yang Jinfei Wang Xi Yao | 2013 | Journal of Advanced Dielectrics2013，3，2： | 0 |
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