安全用户平面辅助性GPS(AGPS: Assist-Global Position System)移动定位平台以其定位精度高、部署成本低等特点而受到运营商的高度重视。开放移动联盟(O- MA)相关规范制定了平台的系统结构,但未解决如何判定移动终端是否漫游以及如何判...安全用户平面辅助性GPS(AGPS: Assist-Global Position System)移动定位平台以其定位精度高、部署成本低等特点而受到运营商的高度重视。开放移动联盟(O- MA)相关规范制定了平台的系统结构,但未解决如何判定移动终端是否漫游以及如何判定移动终端是否支持相关定位协议等问题。在分析平台系统结构的基础上给出了解决上述问题的方法,并提出了组件式的平台软件结构,详细设计了核心进程的软件架构,描述了基于该结构的平台中定位请求消息的处理流程。展开更多
Arabinogalactan proteins(AGPs)are proteoglycans challenging researchers for decades.However,despite the extremely interesting polydispersity of their structure and essential application potential,studies of AGPs in fr...Arabinogalactan proteins(AGPs)are proteoglycans challenging researchers for decades.However,despite the extremely interesting polydispersity of their structure and essential application potential,studies of AGPs in fruit are limited,and only a few groups deal with this scientific subject.Here,we summarise the results of pioneering studies on AGPs in fruit tissue with their structure,specific localization pattern,stress factors influencing their presence,and a focus on recent advances.We discuss the properties of AGPs,i.e.,binding calcium ions,ability to aggregate,adhesive nature,and crosslinking with other cell wall components that may also be implicated in fruit metabolism.The aim of this review is an attempt to associate well-known features and properties of AGPs with their putative roles in fruit ripening.The putative physiological significance of AGPs might provide additional targets of regulation for fruit developmental programme.A comprehensive understanding of the AGP expression,structure,and untypical features may give new information for agronomic,horticulture,and renewable biomaterial applications.展开更多
AGPS定位过程中需要一个辅助定位服务器向终端提供所需的辅助定位信息,设计实现了一个用于终端开发的辅助定位服务器。明确了辅助定位服务器的组网方式和外部接口,基于国际标准,结合实际算法确定了服务器的输出信息格式。设计了初步的...AGPS定位过程中需要一个辅助定位服务器向终端提供所需的辅助定位信息,设计实现了一个用于终端开发的辅助定位服务器。明确了辅助定位服务器的组网方式和外部接口,基于国际标准,结合实际算法确定了服务器的输出信息格式。设计了初步的实现方案,在Visual Studio 2005环境下使用C#语言实现了该方案。为了解决辅助定位服务器在接收端发送辅助定位请求的间隔小于4s时所出现的死机现象,以及由此导致的不能连接多个客户端问题,对设计方案进行了改进,由原来收到的请求再接收和处理辅助信息改为实时接收、处理、发送,很好地解决了该问题。该辅助定位服务器方案成功实现了串口通信和有线Inter-net通信,完成了点到点、点到多点的数据传输。测试结果表明:该辅助定位服务器系统工作稳定、可靠,该数据格式的确定以及软件方案的实现可以顺利完成对终端接收机的定位辅助请求。展开更多
文摘安全用户平面辅助性GPS(AGPS: Assist-Global Position System)移动定位平台以其定位精度高、部署成本低等特点而受到运营商的高度重视。开放移动联盟(O- MA)相关规范制定了平台的系统结构,但未解决如何判定移动终端是否漫游以及如何判定移动终端是否支持相关定位协议等问题。在分析平台系统结构的基础上给出了解决上述问题的方法,并提出了组件式的平台软件结构,详细设计了核心进程的软件架构,描述了基于该结构的平台中定位请求消息的处理流程。
基金supported by the networking activities“Oxygen sensing a novel mean for biology and technology of fruit quality”(CA:18210)which is implemented under the COST Action“Roxy-COST,”funded by the European Cooperation in Science&Technology(2019-2023).
文摘Arabinogalactan proteins(AGPs)are proteoglycans challenging researchers for decades.However,despite the extremely interesting polydispersity of their structure and essential application potential,studies of AGPs in fruit are limited,and only a few groups deal with this scientific subject.Here,we summarise the results of pioneering studies on AGPs in fruit tissue with their structure,specific localization pattern,stress factors influencing their presence,and a focus on recent advances.We discuss the properties of AGPs,i.e.,binding calcium ions,ability to aggregate,adhesive nature,and crosslinking with other cell wall components that may also be implicated in fruit metabolism.The aim of this review is an attempt to associate well-known features and properties of AGPs with their putative roles in fruit ripening.The putative physiological significance of AGPs might provide additional targets of regulation for fruit developmental programme.A comprehensive understanding of the AGP expression,structure,and untypical features may give new information for agronomic,horticulture,and renewable biomaterial applications.
文摘AGPS定位过程中需要一个辅助定位服务器向终端提供所需的辅助定位信息,设计实现了一个用于终端开发的辅助定位服务器。明确了辅助定位服务器的组网方式和外部接口,基于国际标准,结合实际算法确定了服务器的输出信息格式。设计了初步的实现方案,在Visual Studio 2005环境下使用C#语言实现了该方案。为了解决辅助定位服务器在接收端发送辅助定位请求的间隔小于4s时所出现的死机现象,以及由此导致的不能连接多个客户端问题,对设计方案进行了改进,由原来收到的请求再接收和处理辅助信息改为实时接收、处理、发送,很好地解决了该问题。该辅助定位服务器方案成功实现了串口通信和有线Inter-net通信,完成了点到点、点到多点的数据传输。测试结果表明:该辅助定位服务器系统工作稳定、可靠,该数据格式的确定以及软件方案的实现可以顺利完成对终端接收机的定位辅助请求。
