In this paper,the least square support vector machine(LSSVM)is used to study the safety of a high-speed railway.According to the principle of LSSVM regression prediction,the parameters of the LSSVM are optimized to mo...In this paper,the least square support vector machine(LSSVM)is used to study the safety of a high-speed railway.According to the principle of LSSVM regression prediction,the parameters of the LSSVM are optimized to model the natural disaster early warning of safe operation of a high-speed railway,and the management measures and methods of high-speed railway safety operation under natural disasters are given.The relevant statistical data of China’s high-speed railway are used for training and verification.The experimental results show that the LSSVM can well reflect the nonlinear relationship between the accident rate and the influencing factors,with high simulation accuracy and strong generalization ability,and can effectively predict the natural disasters in the safe operation of a high-speed railway.Moreover,the early warning system can improve the ability of safety operation evaluation and early warning of high-speed railway under natural disasters,realize the development goals of high-speed railway(safety,speed,economic,low-carbon and environmental protection)and provide a theoretical basis and technical support for improving the safety of a high-speed railway.展开更多
Countries in Asia and the Pacific are more prone to natural disasters than those in other parts of the world.Because of this,there is an urgent need to continue developing effective,end-to-end early warning systems th...Countries in Asia and the Pacific are more prone to natural disasters than those in other parts of the world.Because of this,there is an urgent need to continue developing effective,end-to-end early warning systems that lead to an effective response by emergency managers and people at risk.ESCAP/WMO Typhoon Committee(TC),in cooperation with WMO/ESCAP Panel on Tropical Cyclones(PTC),conducted a regional cooperation project on Synergized Standard Operating Procedures for Coastal Multi-Hazards Early Warning System(SSOP)with fund support from ESCAP Multi-Donor Trust Fund for Tsunami,Disaster and Climate Preparedness in Indian Ocean and South East Asia.SSOP project was conducted successfully and achieved its proposed goals.Its results and achievements greatly benefit the Members not only in the region but also in all other regions of WMO.The paper reviewed its implementation process,strategy and activities;briefed its main achievements including SSOP Manual,capacity building and cooperation mechanism between TC and PTC;summarized the experiences and lessons from project implementation;and highlighted its sustainability.The paper also suggested the approaches to enhance the sustainability of SSOP results and the cooperation between two regional bodies TC and PTC.展开更多
基金supported by grants from the National Natural Science Foundation of China 51178157High-level Project of the Top Six Talents in Jiangsu Province JXQC-021+1 种基金the Key Science and Technology Program in Henan Province 182102310004the Postgraduate Research and Prac-tice Innovation Program of Jiangsu Province KYCX20-0290.
文摘In this paper,the least square support vector machine(LSSVM)is used to study the safety of a high-speed railway.According to the principle of LSSVM regression prediction,the parameters of the LSSVM are optimized to model the natural disaster early warning of safe operation of a high-speed railway,and the management measures and methods of high-speed railway safety operation under natural disasters are given.The relevant statistical data of China’s high-speed railway are used for training and verification.The experimental results show that the LSSVM can well reflect the nonlinear relationship between the accident rate and the influencing factors,with high simulation accuracy and strong generalization ability,and can effectively predict the natural disasters in the safe operation of a high-speed railway.Moreover,the early warning system can improve the ability of safety operation evaluation and early warning of high-speed railway under natural disasters,realize the development goals of high-speed railway(safety,speed,economic,low-carbon and environmental protection)and provide a theoretical basis and technical support for improving the safety of a high-speed railway.
文摘Countries in Asia and the Pacific are more prone to natural disasters than those in other parts of the world.Because of this,there is an urgent need to continue developing effective,end-to-end early warning systems that lead to an effective response by emergency managers and people at risk.ESCAP/WMO Typhoon Committee(TC),in cooperation with WMO/ESCAP Panel on Tropical Cyclones(PTC),conducted a regional cooperation project on Synergized Standard Operating Procedures for Coastal Multi-Hazards Early Warning System(SSOP)with fund support from ESCAP Multi-Donor Trust Fund for Tsunami,Disaster and Climate Preparedness in Indian Ocean and South East Asia.SSOP project was conducted successfully and achieved its proposed goals.Its results and achievements greatly benefit the Members not only in the region but also in all other regions of WMO.The paper reviewed its implementation process,strategy and activities;briefed its main achievements including SSOP Manual,capacity building and cooperation mechanism between TC and PTC;summarized the experiences and lessons from project implementation;and highlighted its sustainability.The paper also suggested the approaches to enhance the sustainability of SSOP results and the cooperation between two regional bodies TC and PTC.
