针对数字孪生城市亟需空间统一框架与数据高效组织问题,基于地球空间剖分理论及相应的《地球表面空间网格与编码》(GJB8896-2017)、《北斗网格位置码》及《地球空间网格编码规则》等国家标准编制成果,提出发展一种数字孪生城市空间网格...针对数字孪生城市亟需空间统一框架与数据高效组织问题,基于地球空间剖分理论及相应的《地球表面空间网格与编码》(GJB8896-2017)、《北斗网格位置码》及《地球空间网格编码规则》等国家标准编制成果,提出发展一种数字孪生城市空间网格框架与GDS(Grid Data System)数据平台技术。城市多尺度立体剖分网格空间是一种地球空间的客观存在,城市万事万物在某一时间内一定落在某一或某几个网格体中,由此发展的GDS技术面向空间数据统一组织,有利于发展出面向空间建模的新型G-GIS、G-BIM等系统,是对传统GIS、BIM等面向对象建模数据系统的创新探索;有助于构建统一的空间数据框架进而实现城市多源异构数据的汇聚、关联与高效计算,对支撑数字孪生城市建设具有理论与实践意义。展开更多
The paper puts forward a kind of online shopping system based on ASP. NET technology, including the establishment of data- base anti the design of the front web pages. The system uses Microsoft ASP. NEF as development...The paper puts forward a kind of online shopping system based on ASP. NET technology, including the establishment of data- base anti the design of the front web pages. The system uses Microsoft ASP. NEF as development platform, C as the server language, and Microsoft Visual Studio 2008 as the development tool. ADO. NET is used to connect with SQL SERVER 2000 database through the data- base controls. A variety of server controls are used to create the ASP. NET page to implonent the syste^n functions. The syston is designed in 3-Layer application which includes Presentation Layer （PL）, Busi- ness Logic Layer （BLL） and Data Access Layer （DAL）. The operation of the database is in DAL, the logic fimction is in BLL. So the amotunt of work in the development, the difficulty of system maintenance and the upgrading can be reduced. After being tested, the system meets the requirement of the users.展开更多
Big Data applications in the health service field have gradually been paid more close attention. Based on big data technology, more and more health information platforms are beginning to take effects, such as disease ...Big Data applications in the health service field have gradually been paid more close attention. Based on big data technology, more and more health information platforms are beginning to take effects, such as disease prevention, precision medicine, reducing expenditures for medical care and public health, improving medicine research and development. Meanwhile, the platforms have to face a lot of risks, such as health data disclosure, dispute of health data ownership, implicit contradiction explicit, unsustainable platform operation and so on. With the solutions of these risks, the construction of the public platform can provide better service for the citizens, hospital, pharmaceutical company, R＆D institutions or and other parties.展开更多
Through the comparison of various acquisition technology and related technology theory of the existing scheme, the paper analyze and design the power battery testing platform of the data acquisition system, and give t...Through the comparison of various acquisition technology and related technology theory of the existing scheme, the paper analyze and design the power battery testing platform of the data acquisition system, and give the research design scheme of the utility model through the design of the software on PC and CAN bus, which makes the full synchronization requirements acquisition unit; improve the linearity and stability of total voltage and current acquisition by the integrated circuit, and improve the system sampling rate, effectively complete the corresponding index. Finally, through experimental verification, to ensure the completion of the technical indicators.展开更多
文摘针对数字孪生城市亟需空间统一框架与数据高效组织问题,基于地球空间剖分理论及相应的《地球表面空间网格与编码》(GJB8896-2017)、《北斗网格位置码》及《地球空间网格编码规则》等国家标准编制成果,提出发展一种数字孪生城市空间网格框架与GDS(Grid Data System)数据平台技术。城市多尺度立体剖分网格空间是一种地球空间的客观存在,城市万事万物在某一时间内一定落在某一或某几个网格体中,由此发展的GDS技术面向空间数据统一组织,有利于发展出面向空间建模的新型G-GIS、G-BIM等系统,是对传统GIS、BIM等面向对象建模数据系统的创新探索;有助于构建统一的空间数据框架进而实现城市多源异构数据的汇聚、关联与高效计算,对支撑数字孪生城市建设具有理论与实践意义。
文摘The paper puts forward a kind of online shopping system based on ASP. NET technology, including the establishment of data- base anti the design of the front web pages. The system uses Microsoft ASP. NEF as development platform, C as the server language, and Microsoft Visual Studio 2008 as the development tool. ADO. NET is used to connect with SQL SERVER 2000 database through the data- base controls. A variety of server controls are used to create the ASP. NET page to implonent the syste^n functions. The syston is designed in 3-Layer application which includes Presentation Layer （PL）, Busi- ness Logic Layer （BLL） and Data Access Layer （DAL）. The operation of the database is in DAL, the logic fimction is in BLL. So the amotunt of work in the development, the difficulty of system maintenance and the upgrading can be reduced. After being tested, the system meets the requirement of the users.
文摘Big Data applications in the health service field have gradually been paid more close attention. Based on big data technology, more and more health information platforms are beginning to take effects, such as disease prevention, precision medicine, reducing expenditures for medical care and public health, improving medicine research and development. Meanwhile, the platforms have to face a lot of risks, such as health data disclosure, dispute of health data ownership, implicit contradiction explicit, unsustainable platform operation and so on. With the solutions of these risks, the construction of the public platform can provide better service for the citizens, hospital, pharmaceutical company, R＆D institutions or and other parties.
文摘Through the comparison of various acquisition technology and related technology theory of the existing scheme, the paper analyze and design the power battery testing platform of the data acquisition system, and give the research design scheme of the utility model through the design of the software on PC and CAN bus, which makes the full synchronization requirements acquisition unit; improve the linearity and stability of total voltage and current acquisition by the integrated circuit, and improve the system sampling rate, effectively complete the corresponding index. Finally, through experimental verification, to ensure the completion of the technical indicators.
