Timely acquisition of rescue target information is critical for emergency response after a flood disaster.Unmanned Aerial Vehicles(UAVs)equipped with remote sensing capabilities offer distinct advantages,including hig...Timely acquisition of rescue target information is critical for emergency response after a flood disaster.Unmanned Aerial Vehicles(UAVs)equipped with remote sensing capabilities offer distinct advantages,including high-resolution imagery and exceptional mobility,making them well suited for monitoring flood extent and identifying rescue targets during floods.However,there are some challenges in interpreting rescue information in real time from flood images captured by UAVs,such as the complexity of the scenarios of UAV images,the lack of flood rescue target detection datasets and the limited real-time processing capabilities of the airborne on-board platform.Thus,we propose a real-time rescue target detection method for UAVs that is capable of efficiently delineating flood extent and identifying rescue targets(i.e.,pedestrians and vehicles trapped by floods).The proposed method achieves real-time rescue information extraction for UAV platforms by lightweight processing and fusion of flood extent extraction model and target detection model.The flood inundation range is extracted by the proposed method in real time and detects targets such as people and vehicles to be rescued based on this layer.Our experimental results demonstrate that the Intersection over Union(IoU)for flood water extraction reaches an impressive 80%,and the IoU for real-time flood water extraction stands at a commendable 76.4%.The information on flood stricken targets extracted by this method in real time can be used for flood emergency rescue.展开更多
Fire rescue challenges and solutions have evolved from straightfor-ward plane rescue to encompass 3D space due to the rise of high-rise city buildings.Hence,this study facilitates a system with quick and simplified on...Fire rescue challenges and solutions have evolved from straightfor-ward plane rescue to encompass 3D space due to the rise of high-rise city buildings.Hence,this study facilitates a system with quick and simplified on-site launching and generates real-time location data,enabling fire rescuers to arrive at the intended spot faster and correctly for effective and precise rescue.Auto-positioning with step-by-step instructions is proposed when launching the locating system,while no extra measuring instrument like Total Station(TS)is needed.Real-time location tracking is provided via a 3D space real-time locating system(RTLS)constructed using Ultra-wide Bandwidth technology(UWB),which requires electromagnetic waves to pass through concrete walls.A hybrid weighted least squares with a time difference of arrival(WLS/TDOA)positioning method is proposed to address real path-tracking issues in 3D space and to meet RTLS requirements for quick computing in real-world applications.The 3D WLS/TDOA algorithm is theoretically constructed with the Cramer-Rao lower bound(CRLB).The computing complexity is reduced to the lower bound for embedded hardware to directly compute the time differential of the arriving signals using the time-to-digital converter(TDC).The results of the experiments show that the errors are controlled when the positioning algorithm is applied in various complicated situations to fulfill the requirements of engineering applications.The statistical analysis of the data reveals that the proposed UWB RTLS auto-positioning system can track target tags with an accuracy of 0.20 m.展开更多
Since October 2008,China's social consumption of electricity had,for the first time,grown negatively compared to the same period of the previous year,and in November the negative growth range further expanded. The...Since October 2008,China's social consumption of electricity had,for the first time,grown negatively compared to the same period of the previous year,and in November the negative growth range further expanded. The major pressure faced by the electricity industry has now turned from the contradiction between coal and electricity to electricity quantity. This is undoubtedly a true and new test to electricity enterprises which get used to high growth but are now suffering great losses. The reform of electricity system has already been in great difficulties and now is getting into a more serious situation. In order to help readers improve their knowledge and understanding of the current tough situation faced by the electricity industry and discuss how to alleviate and get through the difficulty resulted from the economic crisis "encountered once every one hundred years" by joint efforts of all parties concerned,a Seminar on Crisis and Countermeasures for Electricity Industry was held on November 20,2008. Here are some extracts from the speeches of four experts.展开更多
The subprime mortgage crunch that had simmered throughout 2007 erupted into a global financial crisis in mid-September 2008. To deal with the globally raging crisis, governments worldwide unveiled massive bailout plan...The subprime mortgage crunch that had simmered throughout 2007 erupted into a global financial crisis in mid-September 2008. To deal with the globally raging crisis, governments worldwide unveiled massive bailout plans. Up till now governments have been ratcheting up the size of bailouts and the extent of direct intervention as the financial crisis is spreading and the economic recession is deepening. Meanwhile, governments worldwide are also making tough policy choices among bailout and economic stimulus options. Government decisions made in this unprecedented global financial crisis are, in our opinion, replete with contradictions and mistakes. It is fully understandable that a government may make imperfect decisions when it takes on an unprecedented challenge without adequate preparation. Severely underestimating the nature and magnitude of the crisis and lacking a global macro-perspective and an overall framework and guideline when designing bailout packages, have, however, affected the impact of bailouts and created pitfalls that may come back to haunt the economies in the future.展开更多
Our research was designed to explore the more effective rescuing treatment by summarizing clinical features of the patients with myasthenia gravis crisis. During the course, we carried out a retrospective analysis abo...Our research was designed to explore the more effective rescuing treatment by summarizing clinical features of the patients with myasthenia gravis crisis. During the course, we carried out a retrospective analysis about clinical data and the course of diagnose and treatment of 38 patients (65 cases) with myasthenia gravis crisis who were in hospital in recent 15 years. As a result, most patients with myasthenia gravis crisis relieved after positive treatment and the mortality was 3.1%. Among lots of treatments, incision of trachea earlier, hormonal therapy, dry treatment and to unite these three treatments were more effective than other treatments. The effective ratio was 100%. In the end, we concluded that to unite incision of trachea, immunosuppressive treatment and dry treatment reasonably can increase the effective ratio of rescuing myasthenia gravis crisis and improve the prognosis of patients obviously.展开更多
When Premier Wen Jiabao told this year’s World Economic Forum in Davos that the Chinese Government was explor- ing more efficient ways to use its massive foreign exchange (forex) reserves to boost the domestic econom...When Premier Wen Jiabao told this year’s World Economic Forum in Davos that the Chinese Government was explor- ing more efficient ways to use its massive foreign exchange (forex) reserves to boost the domestic economy, he empha- sized that the reserves could only be used overseas. Zuo Xiaolei, Chief Economist of Beijing-based China Galaxy Securities Co. Ltd., recently wrote an article in the Securities Times explaining why the country’s forex reserves can only be used overseas and how they can help stimulate domestic development. Edited excerpts follow:展开更多
目的:探讨危机理论指导下的创伤急救护理对颅脑外伤患者急救时间、神经功能和生命体征的影响。方法:选择2020年9月—2023年9月在连云港市中医院接受颅脑外伤急救治疗的102例患者作为研究对象,根据随机数表法将患者分为对照组和观察组,...目的:探讨危机理论指导下的创伤急救护理对颅脑外伤患者急救时间、神经功能和生命体征的影响。方法:选择2020年9月—2023年9月在连云港市中医院接受颅脑外伤急救治疗的102例患者作为研究对象,根据随机数表法将患者分为对照组和观察组,各51例。对照组接受常规急救护理,观察组在对照组基础上接受危机理论指导下的创伤急救护理。比较两组急救时间(有效抢救时间、确诊时间和急诊至手术时间)、神经功能[美国国立卫生研究院脑卒中量表(National Institutes of Health stroke scale,NIHSS)评分和格拉斯哥昏迷指数(Glasgow coma scale,GCS)]、生命体征(呼吸频率、心率、收缩压和舒张压)及并发症(缺血性痉挛、电解质紊乱和肢体功能障碍)发生情况。结果:观察组有效抢救时间、确诊时间、急诊至手术时间短于对照组,差异有统计学意义(P<0.05);观察组护理后NIHSS评分低于对照组,GCS评分高于对照组,差异有统计学意义(P<0.05);观察组护理后呼吸频率、心率、收缩压、舒张压低于对照组,差异有统计学意义(P<0.05);观察组并发症发生率低于对照组,差异有统计学意义(P<0.05)。结论:危机理论指导下的创伤急救护理可有效缩短颅脑外伤患者急救时间,改善神经功能和生命体征,降低并发症发生率。展开更多
In our times, philosophy has been suffering from a spiritual crisis that takes the forms of the crisis of culture, the crisis of meaning, and the crisis of way of life. As the soul of culture, philosophy should contri...In our times, philosophy has been suffering from a spiritual crisis that takes the forms of the crisis of culture, the crisis of meaning, and the crisis of way of life. As the soul of culture, philosophy should contribute valuable responses to the problems of our times. Thus understood, this paper intends to analyze the concept of crisis in a phenomenological approach. The concept of crisis is concerned with the philosophical themes of time and death, and the crises of our times are primarily the crises of life-meaning and the life-world. Drawing sources from Husserl and other phenomenologists, as well as experiences from Chinese culture, I argue that a philosophy of crisis should find its point of departure from the crisis of philosophy.展开更多
基金National Natural Science Foundation of China(No.42271416)Guangxi Science and Technology Major Project(No.AA22068072)Shennongjia National Park Resources Comprehensive Investigation Research Project(No.SNJNP2023015).
文摘Timely acquisition of rescue target information is critical for emergency response after a flood disaster.Unmanned Aerial Vehicles(UAVs)equipped with remote sensing capabilities offer distinct advantages,including high-resolution imagery and exceptional mobility,making them well suited for monitoring flood extent and identifying rescue targets during floods.However,there are some challenges in interpreting rescue information in real time from flood images captured by UAVs,such as the complexity of the scenarios of UAV images,the lack of flood rescue target detection datasets and the limited real-time processing capabilities of the airborne on-board platform.Thus,we propose a real-time rescue target detection method for UAVs that is capable of efficiently delineating flood extent and identifying rescue targets(i.e.,pedestrians and vehicles trapped by floods).The proposed method achieves real-time rescue information extraction for UAV platforms by lightweight processing and fusion of flood extent extraction model and target detection model.The flood inundation range is extracted by the proposed method in real time and detects targets such as people and vehicles to be rescued based on this layer.Our experimental results demonstrate that the Intersection over Union(IoU)for flood water extraction reaches an impressive 80%,and the IoU for real-time flood water extraction stands at a commendable 76.4%.The information on flood stricken targets extracted by this method in real time can be used for flood emergency rescue.
文摘Fire rescue challenges and solutions have evolved from straightfor-ward plane rescue to encompass 3D space due to the rise of high-rise city buildings.Hence,this study facilitates a system with quick and simplified on-site launching and generates real-time location data,enabling fire rescuers to arrive at the intended spot faster and correctly for effective and precise rescue.Auto-positioning with step-by-step instructions is proposed when launching the locating system,while no extra measuring instrument like Total Station(TS)is needed.Real-time location tracking is provided via a 3D space real-time locating system(RTLS)constructed using Ultra-wide Bandwidth technology(UWB),which requires electromagnetic waves to pass through concrete walls.A hybrid weighted least squares with a time difference of arrival(WLS/TDOA)positioning method is proposed to address real path-tracking issues in 3D space and to meet RTLS requirements for quick computing in real-world applications.The 3D WLS/TDOA algorithm is theoretically constructed with the Cramer-Rao lower bound(CRLB).The computing complexity is reduced to the lower bound for embedded hardware to directly compute the time differential of the arriving signals using the time-to-digital converter(TDC).The results of the experiments show that the errors are controlled when the positioning algorithm is applied in various complicated situations to fulfill the requirements of engineering applications.The statistical analysis of the data reveals that the proposed UWB RTLS auto-positioning system can track target tags with an accuracy of 0.20 m.
文摘Since October 2008,China's social consumption of electricity had,for the first time,grown negatively compared to the same period of the previous year,and in November the negative growth range further expanded. The major pressure faced by the electricity industry has now turned from the contradiction between coal and electricity to electricity quantity. This is undoubtedly a true and new test to electricity enterprises which get used to high growth but are now suffering great losses. The reform of electricity system has already been in great difficulties and now is getting into a more serious situation. In order to help readers improve their knowledge and understanding of the current tough situation faced by the electricity industry and discuss how to alleviate and get through the difficulty resulted from the economic crisis "encountered once every one hundred years" by joint efforts of all parties concerned,a Seminar on Crisis and Countermeasures for Electricity Industry was held on November 20,2008. Here are some extracts from the speeches of four experts.
文摘The subprime mortgage crunch that had simmered throughout 2007 erupted into a global financial crisis in mid-September 2008. To deal with the globally raging crisis, governments worldwide unveiled massive bailout plans. Up till now governments have been ratcheting up the size of bailouts and the extent of direct intervention as the financial crisis is spreading and the economic recession is deepening. Meanwhile, governments worldwide are also making tough policy choices among bailout and economic stimulus options. Government decisions made in this unprecedented global financial crisis are, in our opinion, replete with contradictions and mistakes. It is fully understandable that a government may make imperfect decisions when it takes on an unprecedented challenge without adequate preparation. Severely underestimating the nature and magnitude of the crisis and lacking a global macro-perspective and an overall framework and guideline when designing bailout packages, have, however, affected the impact of bailouts and created pitfalls that may come back to haunt the economies in the future.
文摘Our research was designed to explore the more effective rescuing treatment by summarizing clinical features of the patients with myasthenia gravis crisis. During the course, we carried out a retrospective analysis about clinical data and the course of diagnose and treatment of 38 patients (65 cases) with myasthenia gravis crisis who were in hospital in recent 15 years. As a result, most patients with myasthenia gravis crisis relieved after positive treatment and the mortality was 3.1%. Among lots of treatments, incision of trachea earlier, hormonal therapy, dry treatment and to unite these three treatments were more effective than other treatments. The effective ratio was 100%. In the end, we concluded that to unite incision of trachea, immunosuppressive treatment and dry treatment reasonably can increase the effective ratio of rescuing myasthenia gravis crisis and improve the prognosis of patients obviously.
文摘When Premier Wen Jiabao told this year’s World Economic Forum in Davos that the Chinese Government was explor- ing more efficient ways to use its massive foreign exchange (forex) reserves to boost the domestic economy, he empha- sized that the reserves could only be used overseas. Zuo Xiaolei, Chief Economist of Beijing-based China Galaxy Securities Co. Ltd., recently wrote an article in the Securities Times explaining why the country’s forex reserves can only be used overseas and how they can help stimulate domestic development. Edited excerpts follow:
文摘目的:探讨危机理论指导下的创伤急救护理对颅脑外伤患者急救时间、神经功能和生命体征的影响。方法:选择2020年9月—2023年9月在连云港市中医院接受颅脑外伤急救治疗的102例患者作为研究对象,根据随机数表法将患者分为对照组和观察组,各51例。对照组接受常规急救护理,观察组在对照组基础上接受危机理论指导下的创伤急救护理。比较两组急救时间(有效抢救时间、确诊时间和急诊至手术时间)、神经功能[美国国立卫生研究院脑卒中量表(National Institutes of Health stroke scale,NIHSS)评分和格拉斯哥昏迷指数(Glasgow coma scale,GCS)]、生命体征(呼吸频率、心率、收缩压和舒张压)及并发症(缺血性痉挛、电解质紊乱和肢体功能障碍)发生情况。结果:观察组有效抢救时间、确诊时间、急诊至手术时间短于对照组,差异有统计学意义(P<0.05);观察组护理后NIHSS评分低于对照组,GCS评分高于对照组,差异有统计学意义(P<0.05);观察组护理后呼吸频率、心率、收缩压、舒张压低于对照组,差异有统计学意义(P<0.05);观察组并发症发生率低于对照组,差异有统计学意义(P<0.05)。结论:危机理论指导下的创伤急救护理可有效缩短颅脑外伤患者急救时间,改善神经功能和生命体征,降低并发症发生率。
文摘In our times, philosophy has been suffering from a spiritual crisis that takes the forms of the crisis of culture, the crisis of meaning, and the crisis of way of life. As the soul of culture, philosophy should contribute valuable responses to the problems of our times. Thus understood, this paper intends to analyze the concept of crisis in a phenomenological approach. The concept of crisis is concerned with the philosophical themes of time and death, and the crises of our times are primarily the crises of life-meaning and the life-world. Drawing sources from Husserl and other phenomenologists, as well as experiences from Chinese culture, I argue that a philosophy of crisis should find its point of departure from the crisis of philosophy.
