Through literature review,we found that evaluations of urban planning implementation often focus narrowly on either the subject(stakeholders)or the object(projects),while micro-level aspects such as site selection and...Through literature review,we found that evaluations of urban planning implementation often focus narrowly on either the subject(stakeholders)or the object(projects),while micro-level aspects such as site selection and construction are primarily considered within the context of planning implementation.There is insufficient research on the evaluation of implementation.Community daycare centers play a crucial role in the community home care model,yet there is relatively little research on their usage efficiency,satisfaction levels,and spatial evaluation of planning implementation.Based on the theoretical understanding of the human environment,including the subject,object,and their interactions,an evaluation system for the planning and implementation of community day care centers was constructed,incorporating subjective evaluation,objective evaluation,and comparative analysis.展开更多
The threshold stress, σc, for sulfide stress corrosion cracking (SCC) of seven pipeline steels and five other steels, the critical stress, Sc, for seven pipeline steels and two drill rod steels with various strengths...The threshold stress, σc, for sulfide stress corrosion cracking (SCC) of seven pipeline steels and five other steels, the critical stress, Sc, for seven pipeline steels and two drill rod steels with various strengths and the susceptibility to SCC, IRA or σf(SCC)/σf, for four pipeline steels, two drill rod steels and five other steels were measured. The results showed that there are no definite relationships among σc, Sc and IRA or σf(SCC)/σf.The threshold stress for hydrogen induced cracking (HlC) during charging with loading in the H2S04 solution, σc(H), decreased linearly with logarithm of the concentration of diffusible hydrogen c0, i.e., σc(H)=A-B Inco for four pipeline steels. σc(H) obtained with a special cathodic current ic, which was corresponding to the diffusible hydrogen concentration during immersing in the H2S solution, were consistent with /c for sulfide SCC for four pipeline steels. Therefore, σc for sulfide SCC can be measured using dynamically charging in the H2SO4 solution with the special cathodic current ic.展开更多
Teacher-child relationship is an important factor for the overall development of the child. It is also a reflector of child centred teaching practices, classroom quality and child outcomes. These relationships are inf...Teacher-child relationship is an important factor for the overall development of the child. It is also a reflector of child centred teaching practices, classroom quality and child outcomes. These relationships are influenced by many factors that are personal to teacher and child and are also related to the classroom environment. Positive teacher-child relationships develop warm and secure teacher-child bondings which are beneficial for the socioemotional and academic success of the child. Dependent and conflictual teacher-child relationships are stressful for teachers and have a negative outcome for the child. This paper explores the literature to recognise the factors affecting teacher-child relationships and have proposed a conceptual framework to understand these relationships in ethnically and socioeconomically diverse classrooms. Literature has tried to define these relationships according to the attachment theory or through bio-ecological model of development thus ignoring the role of culture as a major factor in formation of these relationships. This paper used Bourdiue’s theory of Capital, Field and Habitus and Contextual System Model of Pianta as theoretical framework and proposes Cultural Framework for teacher-child relationships.展开更多
Precisely quantifying the strength of the proximal femur and accurately assessing hip fracture risk would enable those at high risk to be identified so that preventive interventions could be taken.Development of bette...Precisely quantifying the strength of the proximal femur and accurately assessing hip fracture risk would enable those at high risk to be identified so that preventive interventions could be taken.Development of better measures of femoral strength using the clinically展开更多
The rapid development of communication services in the power distribution network poses challenges for existing wireless communications,and the deployment of a fiber optic network is costly and difficult.The emerging ...The rapid development of communication services in the power distribution network poses challenges for existing wireless communications,and the deployment of a fiber optic network is costly and difficult.The emerging 5G technology has been piloted in power distribution networks,though the cost-effectiveness of its large-scale deployment remains unclear.This paper proposes an economic evaluation method for 5G planning in power distribution networks,considering the coupling relationship between power distribution and communication networks and the identification of important network nodes.First,the objective function to solve the planned number of 5G base stations is established.This is solved using the adaptive particle swarm algorithm and K-means algorithm.Second,the coupling relationship between the distribution and communication networks is discussed and quantified.The node importance of the coupling network is analyzed to identify the important nodes,and micro base stations or optical fibers are added to improve the reliability of the distribution network at the communication level.Finally,an economic evaluation index of 5G planning of the distribution network is established.The paper compares the economic solutions of 5G and 4G communications in city and town scenarios using the IEEE 123-node network as an example,and concludes that the economics of 5G are better than those of 4G.展开更多
为有效防范遏制重特大生产安全事故发生,基于设计的“452”逻辑架构,构建了事故致因数据库,定量解析致因及作用关系权重,并通过优化系统理论事故建模与过程(Systems-Theory Accident Modeling and Process,STAMP)模型及决策与实验室(Dec...为有效防范遏制重特大生产安全事故发生,基于设计的“452”逻辑架构,构建了事故致因数据库,定量解析致因及作用关系权重,并通过优化系统理论事故建模与过程(Systems-Theory Accident Modeling and Process,STAMP)模型及决策与实验室(Decision Making Trial and Evaluation Laboratory,DEMATEL)分析法的叠加模型(STAMP-DEMATEL),推演关键致因及其作用关系,搭建致因分层控制结构,系统分析安全约束管控策略。研究揭示了监督检查计划落实、作业行为管理、关键技术水平等6个关键致因及监督检查计划落实-关键技术水平、作业行为管理-安全操作规程执行等5对关键作用关系,涉及政府与企业、企业内部两类主体关系范畴,管-人、管-物两类要素关系。对关键作用关系进行致因、要素、主体层面安全约束的系统分析,可为整个安全生产系统平衡运行提供决策支持,在支持系统风险管理、监管资源分配、风险预警等方面发挥重要作用。展开更多
基金Scientific and Technological Research Project of Chongqing Municipal Education Commission:Evaluation and Optimization of Planning and Implementation of Community Day Care Centers from the Perspective of Subject-Object Relationship(Project number:KJQN202301901).
文摘Through literature review,we found that evaluations of urban planning implementation often focus narrowly on either the subject(stakeholders)or the object(projects),while micro-level aspects such as site selection and construction are primarily considered within the context of planning implementation.There is insufficient research on the evaluation of implementation.Community daycare centers play a crucial role in the community home care model,yet there is relatively little research on their usage efficiency,satisfaction levels,and spatial evaluation of planning implementation.Based on the theoretical understanding of the human environment,including the subject,object,and their interactions,an evaluation system for the planning and implementation of community day care centers was constructed,incorporating subjective evaluation,objective evaluation,and comparative analysis.
基金This project was supported by the NNSFC of China! (No.19891180, 59725104, 59895150) the Corporation of iron and Steel Baosha
文摘The threshold stress, σc, for sulfide stress corrosion cracking (SCC) of seven pipeline steels and five other steels, the critical stress, Sc, for seven pipeline steels and two drill rod steels with various strengths and the susceptibility to SCC, IRA or σf(SCC)/σf, for four pipeline steels, two drill rod steels and five other steels were measured. The results showed that there are no definite relationships among σc, Sc and IRA or σf(SCC)/σf.The threshold stress for hydrogen induced cracking (HlC) during charging with loading in the H2S04 solution, σc(H), decreased linearly with logarithm of the concentration of diffusible hydrogen c0, i.e., σc(H)=A-B Inco for four pipeline steels. σc(H) obtained with a special cathodic current ic, which was corresponding to the diffusible hydrogen concentration during immersing in the H2S solution, were consistent with /c for sulfide SCC for four pipeline steels. Therefore, σc for sulfide SCC can be measured using dynamically charging in the H2SO4 solution with the special cathodic current ic.
文摘Teacher-child relationship is an important factor for the overall development of the child. It is also a reflector of child centred teaching practices, classroom quality and child outcomes. These relationships are influenced by many factors that are personal to teacher and child and are also related to the classroom environment. Positive teacher-child relationships develop warm and secure teacher-child bondings which are beneficial for the socioemotional and academic success of the child. Dependent and conflictual teacher-child relationships are stressful for teachers and have a negative outcome for the child. This paper explores the literature to recognise the factors affecting teacher-child relationships and have proposed a conceptual framework to understand these relationships in ethnically and socioeconomically diverse classrooms. Literature has tried to define these relationships according to the attachment theory or through bio-ecological model of development thus ignoring the role of culture as a major factor in formation of these relationships. This paper used Bourdiue’s theory of Capital, Field and Habitus and Contextual System Model of Pianta as theoretical framework and proposes Cultural Framework for teacher-child relationships.
基金supported by The HongKong Polytechnic University Research Grants(No.1-BB81)grants from National Natural Science Foundation of China,Nos.10872078 and 10832012
文摘Precisely quantifying the strength of the proximal femur and accurately assessing hip fracture risk would enable those at high risk to be identified so that preventive interventions could be taken.Development of better measures of femoral strength using the clinically
基金supported by the National Natural Sci-ence Foundation of China(No.52177114,61403127)Jiangxi Electric Power Co.,Ltd of State Grid(No.521820210005,521820220016).
文摘The rapid development of communication services in the power distribution network poses challenges for existing wireless communications,and the deployment of a fiber optic network is costly and difficult.The emerging 5G technology has been piloted in power distribution networks,though the cost-effectiveness of its large-scale deployment remains unclear.This paper proposes an economic evaluation method for 5G planning in power distribution networks,considering the coupling relationship between power distribution and communication networks and the identification of important network nodes.First,the objective function to solve the planned number of 5G base stations is established.This is solved using the adaptive particle swarm algorithm and K-means algorithm.Second,the coupling relationship between the distribution and communication networks is discussed and quantified.The node importance of the coupling network is analyzed to identify the important nodes,and micro base stations or optical fibers are added to improve the reliability of the distribution network at the communication level.Finally,an economic evaluation index of 5G planning of the distribution network is established.The paper compares the economic solutions of 5G and 4G communications in city and town scenarios using the IEEE 123-node network as an example,and concludes that the economics of 5G are better than those of 4G.
文摘为有效防范遏制重特大生产安全事故发生,基于设计的“452”逻辑架构,构建了事故致因数据库,定量解析致因及作用关系权重,并通过优化系统理论事故建模与过程(Systems-Theory Accident Modeling and Process,STAMP)模型及决策与实验室(Decision Making Trial and Evaluation Laboratory,DEMATEL)分析法的叠加模型(STAMP-DEMATEL),推演关键致因及其作用关系,搭建致因分层控制结构,系统分析安全约束管控策略。研究揭示了监督检查计划落实、作业行为管理、关键技术水平等6个关键致因及监督检查计划落实-关键技术水平、作业行为管理-安全操作规程执行等5对关键作用关系,涉及政府与企业、企业内部两类主体关系范畴,管-人、管-物两类要素关系。对关键作用关系进行致因、要素、主体层面安全约束的系统分析,可为整个安全生产系统平衡运行提供决策支持,在支持系统风险管理、监管资源分配、风险预警等方面发挥重要作用。
