Presents the optimal preventive maintenance model established with the target function given through technical economic analysis, and failure rate and delay time distribution estimated from subjective data, which desc...Presents the optimal preventive maintenance model established with the target function given through technical economic analysis, and failure rate and delay time distribution estimated from subjective data, which describes the relationship between the total downtime and the preventive maintenance and can be used to determine the rational inspection interval and to minimize the total expected downtime per unit time.展开更多
Currently the indoor environment quality is described or evaluated mainly by the subjective or objective data.However,research increasingly has demonstrated that objective and subjective data both had some weaknesses ...Currently the indoor environment quality is described or evaluated mainly by the subjective or objective data.However,research increasingly has demonstrated that objective and subjective data both had some weaknesses to characterize the indoor environment quality,and they can compensate for each other's relative weaknesses.Hence,this study aims to develop an integration model to allow indoor subjective and objective data to be combined based on the structural equation modeling approach,using the Northeast China residential indoor environmental survey data.The results indicated that the integration model had a good fit for the survey data,and the model validity was confirmed.Moreover,in contrast to the subjective data(R^(2)=0.363)and objective data(R^(2)=0.239),the integrated data(R^(2)=0.553)improved the explanatory power on the satisfaction with the overall indoor environment.Furthermore,this integration model demonstrated that indoor subjective data assigned more weights to the integrated data than the corresponding objective data.The association strength of thermal environment and indoor air quality(0.43 or 0.47)was the strongest among the interactions of thermal,air quality,acoustic,and lighting environments.Consequently,the main contribution of this paper was that it provided a comprehensive model to accomplish the integration of indoor environmental subjective and objective data,promoting the ability to describe and assess the indoor environment quality.展开更多
Introduction:Research on the well-being of persons with disabilities(PWDs)has predominantly focused on objective living conditions and physical improvements,with insufficient attention to subjective experiences.This s...Introduction:Research on the well-being of persons with disabilities(PWDs)has predominantly focused on objective living conditions and physical improvements,with insufficient attention to subjective experiences.This study addresses this gap by examining how rehabilitation service utilization enhances economic participation,thereby alleviating subjective relative deprivation(SRD).Methods:Data from 5,288 certified PWDs were analyzed using the National Sample Survey on Subjective Perceptions and Evaluation of Persons with Disabilities’Protection and Development(2023)in China.Linear regression and the Karlson,Holm,and Breen(KHB)method were employed.A heterogeneity analysis was conducted to evaluate subgroup variations.Results:Rehabilitation service utilization is negatively associated with SRD[β=−0.532,95%confidence interval(CI):−0.832,−0.231,P<0.001],with economic participation serving as a mediator in this relationship(KHB:β=−0.044,95%CI:−0.087,−0.001,P<0.05).The SRD-reducing effect of rehabilitation services is stronger among individuals with mild to moderate disabilities(β=−0.634,95%CI:−1.070,−0.197,P<0.01),those with at least a middle school education(β=−0.850,95%CI:−1.250,−0.450,P<0.001),and urban residents(β=−0.803,95%CI:−1.370,−0.236,P<0.01).The mediating effects are also more pronounced within these subgroups.Conclusions:Policies should prioritize enhancing rehabilitation services and employment support for PWDs,with particular focus on groups with mild to moderate disabilities,higher education backgrounds,and urban residents.Psychological interventions should also be implemented to mitigate SRD-related mental health risks.展开更多
The paper presents three aspects of implementation of dynamic imagine and Hypertext in expert systems.First,we design the man-machine interface by using Dynamic Imagine to improve flekibilities of receiving data.Secon...The paper presents three aspects of implementation of dynamic imagine and Hypertext in expert systems.First,we design the man-machine interface by using Dynamic Imagine to improve flekibilities of receiving data.Secondly, we focus on how to make use of the dynamic to develop the attificial ability of expert systems. Finally,we use hypertext to build the objective data structure as the base of the production of subjective data.展开更多
文摘Presents the optimal preventive maintenance model established with the target function given through technical economic analysis, and failure rate and delay time distribution estimated from subjective data, which describes the relationship between the total downtime and the preventive maintenance and can be used to determine the rational inspection interval and to minimize the total expected downtime per unit time.
基金supported by the National Natural Science Foundation of China(No.51978121 and No.51578103)the Key Projects in the National Science&Technology Pillar Program during the 12th Five-year Plan Period of China(No.2012BAJ 02B05)the National Key R&D Program during the 13th Five-year Plan Period of China(No.2018YFD1100701).
文摘Currently the indoor environment quality is described or evaluated mainly by the subjective or objective data.However,research increasingly has demonstrated that objective and subjective data both had some weaknesses to characterize the indoor environment quality,and they can compensate for each other's relative weaknesses.Hence,this study aims to develop an integration model to allow indoor subjective and objective data to be combined based on the structural equation modeling approach,using the Northeast China residential indoor environmental survey data.The results indicated that the integration model had a good fit for the survey data,and the model validity was confirmed.Moreover,in contrast to the subjective data(R^(2)=0.363)and objective data(R^(2)=0.239),the integrated data(R^(2)=0.553)improved the explanatory power on the satisfaction with the overall indoor environment.Furthermore,this integration model demonstrated that indoor subjective data assigned more weights to the integrated data than the corresponding objective data.The association strength of thermal environment and indoor air quality(0.43 or 0.47)was the strongest among the interactions of thermal,air quality,acoustic,and lighting environments.Consequently,the main contribution of this paper was that it provided a comprehensive model to accomplish the integration of indoor environmental subjective and objective data,promoting the ability to describe and assess the indoor environment quality.
基金Supported by the General Program of National Natural Science Foundation of China(72474012)The Major Statistical Projects of the National Bureau of Statistics(2022ZX21).
文摘Introduction:Research on the well-being of persons with disabilities(PWDs)has predominantly focused on objective living conditions and physical improvements,with insufficient attention to subjective experiences.This study addresses this gap by examining how rehabilitation service utilization enhances economic participation,thereby alleviating subjective relative deprivation(SRD).Methods:Data from 5,288 certified PWDs were analyzed using the National Sample Survey on Subjective Perceptions and Evaluation of Persons with Disabilities’Protection and Development(2023)in China.Linear regression and the Karlson,Holm,and Breen(KHB)method were employed.A heterogeneity analysis was conducted to evaluate subgroup variations.Results:Rehabilitation service utilization is negatively associated with SRD[β=−0.532,95%confidence interval(CI):−0.832,−0.231,P<0.001],with economic participation serving as a mediator in this relationship(KHB:β=−0.044,95%CI:−0.087,−0.001,P<0.05).The SRD-reducing effect of rehabilitation services is stronger among individuals with mild to moderate disabilities(β=−0.634,95%CI:−1.070,−0.197,P<0.01),those with at least a middle school education(β=−0.850,95%CI:−1.250,−0.450,P<0.001),and urban residents(β=−0.803,95%CI:−1.370,−0.236,P<0.01).The mediating effects are also more pronounced within these subgroups.Conclusions:Policies should prioritize enhancing rehabilitation services and employment support for PWDs,with particular focus on groups with mild to moderate disabilities,higher education backgrounds,and urban residents.Psychological interventions should also be implemented to mitigate SRD-related mental health risks.
文摘The paper presents three aspects of implementation of dynamic imagine and Hypertext in expert systems.First,we design the man-machine interface by using Dynamic Imagine to improve flekibilities of receiving data.Secondly, we focus on how to make use of the dynamic to develop the attificial ability of expert systems. Finally,we use hypertext to build the objective data structure as the base of the production of subjective data.
