Early childhood caries(ECC)is a significant chronic disease of childhood and a rising public health burden worldwide.ECC may cause a higher risk of new caries lesions in both primary and permanent dentition,affecting ...Early childhood caries(ECC)is a significant chronic disease of childhood and a rising public health burden worldwide.ECC may cause a higher risk of new caries lesions in both primary and permanent dentition,affecting lifelong oral health.The occurrence of ECC has been closely related to the core microbiome change in the oral cavity,which may be influenced by diet habits,oral health management,fluoride use,and dental manipulations.So,it is essential to improve parental oral health and awareness of health care,to establish a dental home at the early stage of childhood,and make an individualized caries management plan.Dental interventions according to the minimally invasive concept should be carried out to treat dental caries.This expert consensus mainly discusses the etiology of ECC,caries-risk assessment of children,prevention and treatment plan of ECC,aiming to achieve lifelong oral health.展开更多
Advanced metering infrastructure( AMI) is a critical part of the smart grid,and ZigBee is playing an increasingly important role in AMI.The cyber security is the prerequisite to ensure the reliable operation of AMI.To...Advanced metering infrastructure( AMI) is a critical part of the smart grid,and ZigBee is playing an increasingly important role in AMI.The cyber security is the prerequisite to ensure the reliable operation of AMI.To guarantee the ZigBee communication security in AMI,a key management scheme based on the elliptic curve cryptosystem( ECC) is proposed.According to the ways of information transformation in AMI,the scheme is categorized as unicast communication key management process and multicast communication key management process.And in the scheme,the selection of elliptic curve,the calculation of ZigBee node's ECC public key and private key,the establishment and distribution of the link key in unicast communication,and the establishment and distribution of the network key in multicast communication are elaborated.The analysis results show that the proposed key management scheme is secure,and consumes less memory and energy,thus,can meet the demands of communication security of AMI.展开更多
随着网络基础设施的更新换代以及个人多媒体终端的爆发式增长,上层应用和服务对网络带宽和稳定性的需求成几何级数增长[1],光传输网络的建设和扩容逐渐成为基础网络升级改造的主要工作。近年来,自动交换光网络(ASON)和光传送网(OTN[2])...随着网络基础设施的更新换代以及个人多媒体终端的爆发式增长,上层应用和服务对网络带宽和稳定性的需求成几何级数增长[1],光传输网络的建设和扩容逐渐成为基础网络升级改造的主要工作。近年来,自动交换光网络(ASON)和光传送网(OTN[2])等智能光传输设备得到广泛应用,网络规模越来越大且入网设备新老混用,该现状容易造成网络运行不稳定和网管运维效率下降等问题。因此,对超大规模智能光传输网实施有效管理,成为当前网络规划和运维管理的重点和难点。基于合理规划网络管理系统管理域、有效降低网元间通信障碍的目的,针对华为智能光传输系统的特点,研究优化嵌入控制通道(embedded control channel,ECC[3])管理子网规模的可行性方案,该方案在具体工程建设中得到了使用和验证,有效提升了智能光传输网的稳定性和运维管理效率。展开更多
基金supported by the National Natural Science Foundation of China(82170947)the International Science and Technology Innovation Cooperation Projects of Science and Technology Office of Sichuan Province(2019YFH0025)。
文摘Early childhood caries(ECC)is a significant chronic disease of childhood and a rising public health burden worldwide.ECC may cause a higher risk of new caries lesions in both primary and permanent dentition,affecting lifelong oral health.The occurrence of ECC has been closely related to the core microbiome change in the oral cavity,which may be influenced by diet habits,oral health management,fluoride use,and dental manipulations.So,it is essential to improve parental oral health and awareness of health care,to establish a dental home at the early stage of childhood,and make an individualized caries management plan.Dental interventions according to the minimally invasive concept should be carried out to treat dental caries.This expert consensus mainly discusses the etiology of ECC,caries-risk assessment of children,prevention and treatment plan of ECC,aiming to achieve lifelong oral health.
基金Sponsored by the National Natural Science Foundation of China(Grant No.51077015)the Fundamental Research Funds for the Central Universities(Grant No.HIT.NSRIF.2015017)
文摘Advanced metering infrastructure( AMI) is a critical part of the smart grid,and ZigBee is playing an increasingly important role in AMI.The cyber security is the prerequisite to ensure the reliable operation of AMI.To guarantee the ZigBee communication security in AMI,a key management scheme based on the elliptic curve cryptosystem( ECC) is proposed.According to the ways of information transformation in AMI,the scheme is categorized as unicast communication key management process and multicast communication key management process.And in the scheme,the selection of elliptic curve,the calculation of ZigBee node's ECC public key and private key,the establishment and distribution of the link key in unicast communication,and the establishment and distribution of the network key in multicast communication are elaborated.The analysis results show that the proposed key management scheme is secure,and consumes less memory and energy,thus,can meet the demands of communication security of AMI.
文摘随着网络基础设施的更新换代以及个人多媒体终端的爆发式增长,上层应用和服务对网络带宽和稳定性的需求成几何级数增长[1],光传输网络的建设和扩容逐渐成为基础网络升级改造的主要工作。近年来,自动交换光网络(ASON)和光传送网(OTN[2])等智能光传输设备得到广泛应用,网络规模越来越大且入网设备新老混用,该现状容易造成网络运行不稳定和网管运维效率下降等问题。因此,对超大规模智能光传输网实施有效管理,成为当前网络规划和运维管理的重点和难点。基于合理规划网络管理系统管理域、有效降低网元间通信障碍的目的,针对华为智能光传输系统的特点,研究优化嵌入控制通道(embedded control channel,ECC[3])管理子网规模的可行性方案,该方案在具体工程建设中得到了使用和验证,有效提升了智能光传输网的稳定性和运维管理效率。
