目的探讨远程医疗会诊在区域化网络协同诊治急性缺血性脑卒中患者的临床应用及效果。方法收集2017年1月至2019年12月就诊的急性缺血性脑卒中患者,其中2017年1月至2018年12月我院区域化网络协同治疗的28例急性缺血性脑卒中患者设为对照组...目的探讨远程医疗会诊在区域化网络协同诊治急性缺血性脑卒中患者的临床应用及效果。方法收集2017年1月至2019年12月就诊的急性缺血性脑卒中患者,其中2017年1月至2018年12月我院区域化网络协同治疗的28例急性缺血性脑卒中患者设为对照组,2019年1-12月我院采用远程医疗会诊联合区域化网络协同治疗的32例急性缺血性脑卒中患者设为观察组,比较两组间发病首次医疗接触时间(first medical contact time,FMCT)、入院到行CTA检测时间(door to imaging time,DIT)、起病至溶栓时间(onset to needle time,ONT)、起病至入院时间(onset to door time,ODT)、入院至静脉溶栓药物开始治疗时间(door to needle time,DNT)、DNT≤60 min达标率、溶栓率、住院时间、并发症及临床结局。结果两组患者在诊疗时效性方面,与对照组DIT[(61.71±21.38)min]、ONT[(201.43±56.44)min]、DNT[(101.02±41.40) min]时间比较,观察组患者DIT[(32.10±7.44)min]、ONT[(166.34±42.37)min]、DNT[(64.97±14.43)min]时间明显缩短(P<0.05);观察组DNT≤60 min达标率、溶栓率、住院时间、并发症及临床结局[59.3%、68.8%、(16.94±8.58)d、6.3%、3.1%]均优于对照组[32.1%、42.0%、(22.14±4.87)d、28.6%、21.4%](P<0.05)。结论通过将远程医疗会诊融入区域化网络协同诊治,可以缩短急性缺血性脑卒中患者的DIT、ONT、DNT时间,提高溶栓比率,改善患者的预后,提高医疗质量。展开更多
The upgrading of the DH （district heating） system through installing WSN （wireless sensor networks）--a technology by which to monitor and control quality operation of the DH system will lead to more effective use ...The upgrading of the DH （district heating） system through installing WSN （wireless sensor networks）--a technology by which to monitor and control quality operation of the DH system will lead to more effective use of thermal energy, enabling also the provision of quality customer services, as the data concerning the status of the existing networks is available in a timely manner, and in the stated amounts. Over the last decades, the use of WSN systems in enabling quality monitoring of heat production and supply process has been widely discussed among various researchers and industry experts, but has been little deployed in practice. These researchers and industry experts have analysed the advantages and constraints related to the use of the WSN in district heating. A pilot project conducted by Riga Heat （the main heating supplier in Riga, Latvia） has allowed to gain a real life experience as to the use of the WSN system in district in-house heating substations, and is deemed to be a major step towards future development of WSN technologies.展开更多
In this paper, we construct two models for the searching task for a lost plane. Model 1 determines the searching area. We predict the trajectory of floats generated after the disintegration of the plane by using RBF n...In this paper, we construct two models for the searching task for a lost plane. Model 1 determines the searching area. We predict the trajectory of floats generated after the disintegration of the plane by using RBF neural network model, and then determine the searching area according to the trajectory. With the pass of time, the searching area will also be constantly moving along the trajectory. Model 2 develops a maritime search plan to achieve the purpose of completing the search in the shortest time. We optimize the searching time and transform the problem into the 0-1 knapsack problem. Solving this problem by improved genetic algorithm, we can get the shortest searching time and the best choice for the search power.展开更多
From the development of modern transportation to the current era of high-speed transportation networks, the Beijing-Tianjin-Hebei(BTH) region has always played a national leading role in land transportation developmen...From the development of modern transportation to the current era of high-speed transportation networks, the Beijing-Tianjin-Hebei(BTH) region has always played a national leading role in land transportation development of China. In order to explore the long-term evolutionary characteristics of land transportation in the BTH region, this paper utilized a temporal scale of 100 years to systematically interpret the development process of the land transportation network. Taking 13 cities within the BTH region as research anchor cities, we took into account "leaping" mode of transportation in order to investigate the evolution of accessibility. Our research shows the following results:(1) The land transportation network in the BTH region has undergone five stages of development: the initial period of modernization(1881–1937); the period of stagnation of transportation development(1937–1949); the network expansion period(1949–1980); the period of trunk construction(1980–1995), and the period of high-speed transportation network development(1995–present). The network structure centered around Beijing has existed from the outset of modern transportation development.(2) The accessibility spatial pattern of land transportation in BTH region has evolved from expansion along traffic corridors to the formation of concentric circles. The stratified circular structure of transportation in anchor cities has gradually developed into a contiguous development pattern.(3) There are clear hierarchical differences in the transportation structures of anchor cities. Beijing has always been at the top of this hierarchy, while the hierarchical position of Zhangjiakou has fallen noticeably since 1949. The Beijing-Tianjin region was the first region to form a short-duration transportation circle structure, while the transportation advantages of the central part of Hebei Province, which is located in the center of the BTH transportation region, have yet to be realized.展开更多
文摘目的探讨远程医疗会诊在区域化网络协同诊治急性缺血性脑卒中患者的临床应用及效果。方法收集2017年1月至2019年12月就诊的急性缺血性脑卒中患者,其中2017年1月至2018年12月我院区域化网络协同治疗的28例急性缺血性脑卒中患者设为对照组,2019年1-12月我院采用远程医疗会诊联合区域化网络协同治疗的32例急性缺血性脑卒中患者设为观察组,比较两组间发病首次医疗接触时间(first medical contact time,FMCT)、入院到行CTA检测时间(door to imaging time,DIT)、起病至溶栓时间(onset to needle time,ONT)、起病至入院时间(onset to door time,ODT)、入院至静脉溶栓药物开始治疗时间(door to needle time,DNT)、DNT≤60 min达标率、溶栓率、住院时间、并发症及临床结局。结果两组患者在诊疗时效性方面,与对照组DIT[(61.71±21.38)min]、ONT[(201.43±56.44)min]、DNT[(101.02±41.40) min]时间比较,观察组患者DIT[(32.10±7.44)min]、ONT[(166.34±42.37)min]、DNT[(64.97±14.43)min]时间明显缩短(P<0.05);观察组DNT≤60 min达标率、溶栓率、住院时间、并发症及临床结局[59.3%、68.8%、(16.94±8.58)d、6.3%、3.1%]均优于对照组[32.1%、42.0%、(22.14±4.87)d、28.6%、21.4%](P<0.05)。结论通过将远程医疗会诊融入区域化网络协同诊治,可以缩短急性缺血性脑卒中患者的DIT、ONT、DNT时间,提高溶栓比率,改善患者的预后,提高医疗质量。
文摘The upgrading of the DH （district heating） system through installing WSN （wireless sensor networks）--a technology by which to monitor and control quality operation of the DH system will lead to more effective use of thermal energy, enabling also the provision of quality customer services, as the data concerning the status of the existing networks is available in a timely manner, and in the stated amounts. Over the last decades, the use of WSN systems in enabling quality monitoring of heat production and supply process has been widely discussed among various researchers and industry experts, but has been little deployed in practice. These researchers and industry experts have analysed the advantages and constraints related to the use of the WSN in district heating. A pilot project conducted by Riga Heat （the main heating supplier in Riga, Latvia） has allowed to gain a real life experience as to the use of the WSN system in district in-house heating substations, and is deemed to be a major step towards future development of WSN technologies.
文摘In this paper, we construct two models for the searching task for a lost plane. Model 1 determines the searching area. We predict the trajectory of floats generated after the disintegration of the plane by using RBF neural network model, and then determine the searching area according to the trajectory. With the pass of time, the searching area will also be constantly moving along the trajectory. Model 2 develops a maritime search plan to achieve the purpose of completing the search in the shortest time. We optimize the searching time and transform the problem into the 0-1 knapsack problem. Solving this problem by improved genetic algorithm, we can get the shortest searching time and the best choice for the search power.
基金National Natural Science Foundation of China,No.41701122,No.41430635China Postdoctoral Science Foundation,No.2017M611854,No.2016M600356
文摘From the development of modern transportation to the current era of high-speed transportation networks, the Beijing-Tianjin-Hebei(BTH) region has always played a national leading role in land transportation development of China. In order to explore the long-term evolutionary characteristics of land transportation in the BTH region, this paper utilized a temporal scale of 100 years to systematically interpret the development process of the land transportation network. Taking 13 cities within the BTH region as research anchor cities, we took into account "leaping" mode of transportation in order to investigate the evolution of accessibility. Our research shows the following results:(1) The land transportation network in the BTH region has undergone five stages of development: the initial period of modernization(1881–1937); the period of stagnation of transportation development(1937–1949); the network expansion period(1949–1980); the period of trunk construction(1980–1995), and the period of high-speed transportation network development(1995–present). The network structure centered around Beijing has existed from the outset of modern transportation development.(2) The accessibility spatial pattern of land transportation in BTH region has evolved from expansion along traffic corridors to the formation of concentric circles. The stratified circular structure of transportation in anchor cities has gradually developed into a contiguous development pattern.(3) There are clear hierarchical differences in the transportation structures of anchor cities. Beijing has always been at the top of this hierarchy, while the hierarchical position of Zhangjiakou has fallen noticeably since 1949. The Beijing-Tianjin region was the first region to form a short-duration transportation circle structure, while the transportation advantages of the central part of Hebei Province, which is located in the center of the BTH transportation region, have yet to be realized.
