The feasibility of monitoring the dipped rail joint defects has been theoretically investigated by simulating a locomotive-mounted acceleration system negoti- ating several types of dipped rail defects. Initially, a c...The feasibility of monitoring the dipped rail joint defects has been theoretically investigated by simulating a locomotive-mounted acceleration system negoti- ating several types of dipped rail defects. Initially, a comprehensive locomotive-track model was developed using the multi-body dynamics approach. In this model, the locomotive car-body, bogie frames, wheelsets and driving motors are considered as rigid bodies; track modelling was also taken into account. A quantitative relationship between the characteristics （peak-peak values） of the axle box accelerations and the rail defects was determined through simulations. Therefore, the proposed approach, which combines defect analysis and comparisons with theoretical results, will enhance the ability for long-term monitoring and assessment of track systems and provides more informed preventative track maintenance strategies.展开更多
中医药在我国现代医疗服务体系中具有特殊性,在医保支付方式改革中面临新的机遇和挑战。基于此,文章以甘肃省为例,分析按疾病诊断相关分组(Diagnosis Related Groups,DRG)和按病种分值付费(Diagnosis-Intervention Packet,DIP)对公立中...中医药在我国现代医疗服务体系中具有特殊性,在医保支付方式改革中面临新的机遇和挑战。基于此,文章以甘肃省为例,分析按疾病诊断相关分组(Diagnosis Related Groups,DRG)和按病种分值付费(Diagnosis-Intervention Packet,DIP)对公立中医医院高质量发展的多维影响,并针对中医在医疗服务体系中的特殊性,提出甘肃省公立中医医院应对DRG/DIP支付方式改革的策略,以期推动甘肃省医疗卫生事业的发展。展开更多
基金the support of the Centre for Railway Engineering, Central Queensland Universitythe support from State Key Laboratory of Traction Power, Southwest Jiaotong University in the Open Projects: TPL1504, ‘Study on heavy haul train and coupler system dynamics’
文摘The feasibility of monitoring the dipped rail joint defects has been theoretically investigated by simulating a locomotive-mounted acceleration system negoti- ating several types of dipped rail defects. Initially, a comprehensive locomotive-track model was developed using the multi-body dynamics approach. In this model, the locomotive car-body, bogie frames, wheelsets and driving motors are considered as rigid bodies; track modelling was also taken into account. A quantitative relationship between the characteristics （peak-peak values） of the axle box accelerations and the rail defects was determined through simulations. Therefore, the proposed approach, which combines defect analysis and comparisons with theoretical results, will enhance the ability for long-term monitoring and assessment of track systems and provides more informed preventative track maintenance strategies.
文摘中医药在我国现代医疗服务体系中具有特殊性,在医保支付方式改革中面临新的机遇和挑战。基于此,文章以甘肃省为例,分析按疾病诊断相关分组(Diagnosis Related Groups,DRG)和按病种分值付费(Diagnosis-Intervention Packet,DIP)对公立中医医院高质量发展的多维影响,并针对中医在医疗服务体系中的特殊性,提出甘肃省公立中医医院应对DRG/DIP支付方式改革的策略,以期推动甘肃省医疗卫生事业的发展。
