随着网络技术的持续演进,为满足日益增长的通信需求,急需对油气自控网络进行升级。基于虚拟交换实例(Virtual Switching Instance,VSI)/虚拟扩展局域网(Virtual eXtensible Local Area Network,VXLAN)隧道通信技术,开展网际互连协议第4...随着网络技术的持续演进,为满足日益增长的通信需求,急需对油气自控网络进行升级。基于虚拟交换实例(Virtual Switching Instance,VSI)/虚拟扩展局域网(Virtual eXtensible Local Area Network,VXLAN)隧道通信技术,开展网际互连协议第4版/网际互连协议第6版(Internet Protocol Version 4/Internet Protocol Version 6,IPv6)双栈部署与效能评估相关研究。通过确立双栈架构的设计原则与目标,构建分层网络架构,实现VSI/VXLAN隧道与IPv4/IPv6双栈架构的深度融合,完成核心网络设备与接入层网络的双栈部署,并实施安全域划分。基于多维度效能评估指标体系,采集多测点、多负载条件下的性能数据,量化评估网络的安全防护能力。实验结果表明,该方案可显著提升油气自控网络在协议兼容性、传输效率与安全性方面的综合性能,为其数字化升级提供理论支撑与实践路径。展开更多
分析了IPv6(Internet Protocol Version 6)与IPv4(Internet Protocol Version 4)各自的特点以及两者之间的区别和联系,介绍了多播技术、双栈技术、隧道技术、协议转换技术等4种过渡技术,并讨论了各种技术的工作原理。在IPv6与IPv4的互...分析了IPv6(Internet Protocol Version 6)与IPv4(Internet Protocol Version 4)各自的特点以及两者之间的区别和联系,介绍了多播技术、双栈技术、隧道技术、协议转换技术等4种过渡技术,并讨论了各种技术的工作原理。在IPv6与IPv4的互联通信中,尽可能地保留了IPv4,使其在IPv6环境中有效运行,从而保证了数据包的安全性。实例验证结果表明,所提出的转换协议技术实现了2个协议之间的互联通信。展开更多
随着云计算、物联网、大数据等网络技术迅速发展和高校信息化建设需求的日益剧增,导致智慧校园建设中网际互连协议(Internet Protocol,IP)地址严重不足,因此提出采用网际协议版本4(Internet Protocol version 4,IPv4)/网际协议版本6(Int...随着云计算、物联网、大数据等网络技术迅速发展和高校信息化建设需求的日益剧增,导致智慧校园建设中网际互连协议(Internet Protocol,IP)地址严重不足,因此提出采用网际协议版本4(Internet Protocol version 4,IPv4)/网际协议版本6(Internet Protocol version 6,IPv6)过渡技术解决这个问题。首先,深入研究IPv4/IPv63种过渡技术;其次,结合智慧校园建设的实际情况和网络管理实践经验,提出了符合高校的IPv4/IPv6过渡策略;最后,完成了高校IPv6校园网方案设计和部署实现,以期为IPv6智慧校园建设和IPv6应用顺利推广提供参考依据和技术保障。展开更多
为了提高交通标志识别的速度和精度,提出了一种采用Yolov4(You only look once version4)深度学习框架的交通标志识别方法,并将该方法与SSD(single shot multi box detector)和Yolov3(You only look once version 3)算法进行对比,所提...为了提高交通标志识别的速度和精度,提出了一种采用Yolov4(You only look once version4)深度学习框架的交通标志识别方法,并将该方法与SSD(single shot multi box detector)和Yolov3(You only look once version 3)算法进行对比,所提算法模型参数量显著增加。进一步对Yolov4的主干特征提取网络和多尺度输出进行调整,提出轻量化的Yolov4算法。仿真实验表明,此算法能够快速有效检测交通标志,具有实时性和适用性。展开更多
文章主要探讨了医院网际互连协议第4版(Internet Protocol version 4,IPv4)网络向网际互连协议第6版(Internet Protocol version 6,IPv6)网络过渡的通信技术应用,重点分析了双栈技术、隧道技术以及转换技术在过渡过程中的应用。通过华为...文章主要探讨了医院网际互连协议第4版(Internet Protocol version 4,IPv4)网络向网际互连协议第6版(Internet Protocol version 6,IPv6)网络过渡的通信技术应用,重点分析了双栈技术、隧道技术以及转换技术在过渡过程中的应用。通过华为eNSP模拟器构建双栈网络环境,并进行多项测试验证其可行性。结果表明,双栈技术能有效支持IPv4和IPv6协议共存,为医院网络现代化提供技术保障。同时,研究强调在过渡过程中需考虑的安全挑战和设备升级问题,提出了具体的实施策略和优化建议。展开更多
Post-hospital brain injury rehabilitation programs are afforded limited time to reduce chronic disability resulting from acquired brain injury. Therefore, the purpose of this study was to identify deficit areas result...Post-hospital brain injury rehabilitation programs are afforded limited time to reduce chronic disability resulting from acquired brain injury. Therefore, the purpose of this study was to identify deficit areas resulting from acquired brain injury that have the greatest impact on functional outcomes to enable greater efficiency in rehabilitation programming. Study participants were 1717 persons with acquired brain injury treated in residential post-hospital rehabilitation programs. Participants were assessed at admission and discharge on the MPAI-4. Functional status at discharge was evaluated based on T-scores derived from MPAI-4 discharge participation index items: Initiation, self-care and residence. The data base of 1717 was randomly divided into two subsets. Items from admission Abilities Index and select person variables were entered into stepwise multiple regression on subset one and then in a hierarchical multiple regression on subset two. Rash analysis demonstrated satisfactory construct validity and internal consistency of admission and discharge MPAI-4 evaluations (Person reliability > 0.90, Item reliability = 0.99). Both regression analyses revealed that Mobility and Novel Problem Solving accounted for 40% of the variance in functional outcome, p < 0.001. Acquired brain injury results in a myriad of cognitive and physical impairments. Of the many possible deficits, the greatest gains in overall functional outcomes may be achieved by allocating additional treatments aimed at reducing disability in mobility and novel problem solving.展开更多
文摘随着网络技术的持续演进,为满足日益增长的通信需求,急需对油气自控网络进行升级。基于虚拟交换实例(Virtual Switching Instance,VSI)/虚拟扩展局域网(Virtual eXtensible Local Area Network,VXLAN)隧道通信技术,开展网际互连协议第4版/网际互连协议第6版(Internet Protocol Version 4/Internet Protocol Version 6,IPv6)双栈部署与效能评估相关研究。通过确立双栈架构的设计原则与目标,构建分层网络架构,实现VSI/VXLAN隧道与IPv4/IPv6双栈架构的深度融合,完成核心网络设备与接入层网络的双栈部署,并实施安全域划分。基于多维度效能评估指标体系,采集多测点、多负载条件下的性能数据,量化评估网络的安全防护能力。实验结果表明,该方案可显著提升油气自控网络在协议兼容性、传输效率与安全性方面的综合性能,为其数字化升级提供理论支撑与实践路径。
文摘分析了IPv6(Internet Protocol Version 6)与IPv4(Internet Protocol Version 4)各自的特点以及两者之间的区别和联系,介绍了多播技术、双栈技术、隧道技术、协议转换技术等4种过渡技术,并讨论了各种技术的工作原理。在IPv6与IPv4的互联通信中,尽可能地保留了IPv4,使其在IPv6环境中有效运行,从而保证了数据包的安全性。实例验证结果表明,所提出的转换协议技术实现了2个协议之间的互联通信。
文摘随着云计算、物联网、大数据等网络技术迅速发展和高校信息化建设需求的日益剧增,导致智慧校园建设中网际互连协议(Internet Protocol,IP)地址严重不足,因此提出采用网际协议版本4(Internet Protocol version 4,IPv4)/网际协议版本6(Internet Protocol version 6,IPv6)过渡技术解决这个问题。首先,深入研究IPv4/IPv63种过渡技术;其次,结合智慧校园建设的实际情况和网络管理实践经验,提出了符合高校的IPv4/IPv6过渡策略;最后,完成了高校IPv6校园网方案设计和部署实现,以期为IPv6智慧校园建设和IPv6应用顺利推广提供参考依据和技术保障。
文摘为了提高交通标志识别的速度和精度,提出了一种采用Yolov4(You only look once version4)深度学习框架的交通标志识别方法,并将该方法与SSD(single shot multi box detector)和Yolov3(You only look once version 3)算法进行对比,所提算法模型参数量显著增加。进一步对Yolov4的主干特征提取网络和多尺度输出进行调整,提出轻量化的Yolov4算法。仿真实验表明,此算法能够快速有效检测交通标志,具有实时性和适用性。
文摘文章主要探讨了医院网际互连协议第4版(Internet Protocol version 4,IPv4)网络向网际互连协议第6版(Internet Protocol version 6,IPv6)网络过渡的通信技术应用,重点分析了双栈技术、隧道技术以及转换技术在过渡过程中的应用。通过华为eNSP模拟器构建双栈网络环境,并进行多项测试验证其可行性。结果表明,双栈技术能有效支持IPv4和IPv6协议共存,为医院网络现代化提供技术保障。同时,研究强调在过渡过程中需考虑的安全挑战和设备升级问题,提出了具体的实施策略和优化建议。
文摘Post-hospital brain injury rehabilitation programs are afforded limited time to reduce chronic disability resulting from acquired brain injury. Therefore, the purpose of this study was to identify deficit areas resulting from acquired brain injury that have the greatest impact on functional outcomes to enable greater efficiency in rehabilitation programming. Study participants were 1717 persons with acquired brain injury treated in residential post-hospital rehabilitation programs. Participants were assessed at admission and discharge on the MPAI-4. Functional status at discharge was evaluated based on T-scores derived from MPAI-4 discharge participation index items: Initiation, self-care and residence. The data base of 1717 was randomly divided into two subsets. Items from admission Abilities Index and select person variables were entered into stepwise multiple regression on subset one and then in a hierarchical multiple regression on subset two. Rash analysis demonstrated satisfactory construct validity and internal consistency of admission and discharge MPAI-4 evaluations (Person reliability > 0.90, Item reliability = 0.99). Both regression analyses revealed that Mobility and Novel Problem Solving accounted for 40% of the variance in functional outcome, p < 0.001. Acquired brain injury results in a myriad of cognitive and physical impairments. Of the many possible deficits, the greatest gains in overall functional outcomes may be achieved by allocating additional treatments aimed at reducing disability in mobility and novel problem solving.
