Land is rare natural resource.Production and construction of all sectors in a region must be based on land.Thus,overall research and analysis on current situation of land use can reveal scope,depth and reasonableness ...Land is rare natural resource.Production and construction of all sectors in a region must be based on land.Thus,overall research and analysis on current situation of land use can reveal scope,depth and reasonableness of land use,is helpful for analyzing internal mechanism land use change,and can reflect production scale,level and characteristics,and also can provide basis for optimization and adjustment of land use structure.Based on RS and GIS technologies,with the aid of TM image data of the Three-gorges Reservoir Region in 2010,the data of current situation of land use in Three-gorges Reservoir Region was obtained,and current land use situation was analyzed using geographimetrics and landscape ecology methods.Results show that since natural,social and economic conditions are different,land type diversity,combination type and location index of counties in the Three-gorges Reservoir Region are varied.In the land use diversity index,Xingshan County has the most single land use type(mainly forest land); in land use degree,Yuzhong District has the highest land use degree; in the integrated index of land use,Changshou District has the lowest integrated index of land use.This study is expected to provide reference and basis for formulating policies of protecting ecological environment of the Three-gorges Reservoir Region.展开更多
The monitoring system of urban railway transportation is based on the technology of information processing, computer, network communication and image recognition. It is controlled by a central control equipment, stati...The monitoring system of urban railway transportation is based on the technology of information processing, computer, network communication and image recognition. It is controlled by a central control equipment, station equipment, capture and mapping and the video signal transmission security system, it can serve as a dispatcher for control center, station dispatcher and train drivers provide visual monitoring information, in order to ensure the quality of urban railway safe operation and high service plays a very important role. As urban rail lines and the types of monitoring stations and scenes increase, they become complex, diverse and numerous. Monitoring systems have high requirements for intelligence, network, real-time management, maintenance and maintenance. Urban railway transport monitoring system from analog monitoring system to analog digital monitoring system, from digital monitoring system to modern intelligent monitoring system. The research of urban railway traffic monitoring system mainly focuses on the high definition broadcasting technology, intelligent analysis technology, planning optimization technology and so on. At present, there is still a lack of clearer information on the monitoring of urban railway traffic. The architecture of collaboration on one side of the cloud, the method of collaboration on the other side of the cloud and so on. Therefore, considering the characteristics and requirements of urban railway transportation, the in-depth study of cloud cooperation technology in urban railway transportation monitoring system provides technical support for improving urban knowledge level in real time. Monitoring and control system of railway transportation.展开更多
基金Supported by Project of National Natural Science Foundation(41101503)Key Project of National Social Science Foundation(11&ZD161)
文摘Land is rare natural resource.Production and construction of all sectors in a region must be based on land.Thus,overall research and analysis on current situation of land use can reveal scope,depth and reasonableness of land use,is helpful for analyzing internal mechanism land use change,and can reflect production scale,level and characteristics,and also can provide basis for optimization and adjustment of land use structure.Based on RS and GIS technologies,with the aid of TM image data of the Three-gorges Reservoir Region in 2010,the data of current situation of land use in Three-gorges Reservoir Region was obtained,and current land use situation was analyzed using geographimetrics and landscape ecology methods.Results show that since natural,social and economic conditions are different,land type diversity,combination type and location index of counties in the Three-gorges Reservoir Region are varied.In the land use diversity index,Xingshan County has the most single land use type(mainly forest land); in land use degree,Yuzhong District has the highest land use degree; in the integrated index of land use,Changshou District has the lowest integrated index of land use.This study is expected to provide reference and basis for formulating policies of protecting ecological environment of the Three-gorges Reservoir Region.
文摘The monitoring system of urban railway transportation is based on the technology of information processing, computer, network communication and image recognition. It is controlled by a central control equipment, station equipment, capture and mapping and the video signal transmission security system, it can serve as a dispatcher for control center, station dispatcher and train drivers provide visual monitoring information, in order to ensure the quality of urban railway safe operation and high service plays a very important role. As urban rail lines and the types of monitoring stations and scenes increase, they become complex, diverse and numerous. Monitoring systems have high requirements for intelligence, network, real-time management, maintenance and maintenance. Urban railway transport monitoring system from analog monitoring system to analog digital monitoring system, from digital monitoring system to modern intelligent monitoring system. The research of urban railway traffic monitoring system mainly focuses on the high definition broadcasting technology, intelligent analysis technology, planning optimization technology and so on. At present, there is still a lack of clearer information on the monitoring of urban railway traffic. The architecture of collaboration on one side of the cloud, the method of collaboration on the other side of the cloud and so on. Therefore, considering the characteristics and requirements of urban railway transportation, the in-depth study of cloud cooperation technology in urban railway transportation monitoring system provides technical support for improving urban knowledge level in real time. Monitoring and control system of railway transportation.
