软件定义网络(Software Defined Network,SDN)架构是使用软件编写代码的方式构建网络,实现控制转发平面分离,并对控制平面实现集中管理.生成树协议(Spanning Tree Protocol,STP)是交换式网络的环路避免协议,通过生成树算法(Spanning Tre...软件定义网络(Software Defined Network,SDN)架构是使用软件编写代码的方式构建网络,实现控制转发平面分离,并对控制平面实现集中管理.生成树协议(Spanning Tree Protocol,STP)是交换式网络的环路避免协议,通过生成树算法(Spanning Tree Algorithm,STA),将带有环路的物理拓扑中某台设备的接口设置为阻塞状态,构建逻辑无环拓扑.该文通过Python代码编制网络拓扑文件和RYU控制器文件的方式,实施SDN中的网络环路设计,按照STA算法设计和实现STP环路避免,并在仿真实验平台运行,测试结果表明,实现了SDN网络中环路避免.展开更多
Objective:The institutionalization of care for patients with dementia is becoming a trend.Understanding the burden on employed caregivers and exploring associated factors are of great importance in practice.Therefore,...Objective:The institutionalization of care for patients with dementia is becoming a trend.Understanding the burden on employed caregivers and exploring associated factors are of great importance in practice.Therefore,this study aimed to examine the relationship between basic attributes,caring ability,and caregiver burden in employed caregivers practicing in nursing homes.Methods:This cross-sectional study included 541 employed caregivers in 11 four-star nursing homes in Zhejiang Province from April to December 2022.Caregiver burden was assessed using the Zarit Burden Interview(ZBI).Demographic characteristics of participants,characteristics of the older patients with dementia,caring characteristics,training in dementia care,and caring abilities were collected for analysis of influencing factors.A hierarchical multiple regression analysis was conducted to explore the factors influencing the burden on employed caregivers in nursing homes.Results:The ZBI score of employed caregivers in nursing homes was 40.42±10.18,representing a moderate caregiver burden.Factors such as age(U=27.82,P<0.001),residence(U=7.89,P<0.001),educational level(H=55.81,P<0.001),self-care of older patients with dementia(H=85.21,P<0.001),daily care hours(H=73.25,P<0.001),number of older people with dementia cared for(H=14.56,P<0.012)and training in dementia care(U=-9.43,P<0.001)were significantly associated with caregiver burden.Caring ability was negatively associated with caregiver burden(r=-0.22,P<0.01).Furthermore,after controlling for demographic characteristics,the characteristics of older people with dementia,caring characteristics,training in dementia care,and caring ability explained 8.5%,5.8%,and 4.8%of the caregiver burden,respectively.Conclusion:The burden of employed caregivers on patients with dementia in nursing homes can be attributed to various factors.We recommend tailored interventions,such as dementia care training and reviewing the number and duration of hours worked to reduce the burden experienced by caregivers.展开更多
文摘软件定义网络(Software Defined Network,SDN)架构是使用软件编写代码的方式构建网络,实现控制转发平面分离,并对控制平面实现集中管理.生成树协议(Spanning Tree Protocol,STP)是交换式网络的环路避免协议,通过生成树算法(Spanning Tree Algorithm,STA),将带有环路的物理拓扑中某台设备的接口设置为阻塞状态,构建逻辑无环拓扑.该文通过Python代码编制网络拓扑文件和RYU控制器文件的方式,实施SDN中的网络环路设计,按照STA算法设计和实现STP环路避免,并在仿真实验平台运行,测试结果表明,实现了SDN网络中环路避免.
基金supported by the Department of Science and Technology of Zhejiang Province(LGF22H250002)the Health Commission of Zhejiang Province(2024KY002 to L.C.,2024KY617 to L.W.,2022KY004 to J.B.)The views expressed are those of the authors and not necessarily those of the funders.
文摘Objective:The institutionalization of care for patients with dementia is becoming a trend.Understanding the burden on employed caregivers and exploring associated factors are of great importance in practice.Therefore,this study aimed to examine the relationship between basic attributes,caring ability,and caregiver burden in employed caregivers practicing in nursing homes.Methods:This cross-sectional study included 541 employed caregivers in 11 four-star nursing homes in Zhejiang Province from April to December 2022.Caregiver burden was assessed using the Zarit Burden Interview(ZBI).Demographic characteristics of participants,characteristics of the older patients with dementia,caring characteristics,training in dementia care,and caring abilities were collected for analysis of influencing factors.A hierarchical multiple regression analysis was conducted to explore the factors influencing the burden on employed caregivers in nursing homes.Results:The ZBI score of employed caregivers in nursing homes was 40.42±10.18,representing a moderate caregiver burden.Factors such as age(U=27.82,P<0.001),residence(U=7.89,P<0.001),educational level(H=55.81,P<0.001),self-care of older patients with dementia(H=85.21,P<0.001),daily care hours(H=73.25,P<0.001),number of older people with dementia cared for(H=14.56,P<0.012)and training in dementia care(U=-9.43,P<0.001)were significantly associated with caregiver burden.Caring ability was negatively associated with caregiver burden(r=-0.22,P<0.01).Furthermore,after controlling for demographic characteristics,the characteristics of older people with dementia,caring characteristics,training in dementia care,and caring ability explained 8.5%,5.8%,and 4.8%of the caregiver burden,respectively.Conclusion:The burden of employed caregivers on patients with dementia in nursing homes can be attributed to various factors.We recommend tailored interventions,such as dementia care training and reviewing the number and duration of hours worked to reduce the burden experienced by caregivers.
