[Objective] The paper was to study the geometric modeling of rape（Brassica napus L.） during seedling stage.[Method] Based on the analysis and observation of morphological structure and growth process of rape during ...
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[Objective] The paper was to study the geometric modeling of rape（Brassica napus L.） during seedling stage.[Method] Based on the analysis and observation of morphological structure and growth process of rape during seedling stage,a characteristic parameters-based three-dimensional mathematical model of rape and its visible method was *** individual control parameters were extracted according to the morphological structures of various organs of *** sizes of leaf and petiole model were constructed by using cubic Bézier *** cylinder with different upper and lower bottom area was adopted as the main stem ***,three-dimensional reconstruction of whole Rape plant during seedling stage was achieved through the operations of rotation,scaling and splicing.[Result] This method had certain controllability,which was also easy and convenient,and could quickly use to build the geometric model of rape during seedling stage.[Conclusion] The results provided reference for study on structural model of rape.
[Objective]The paper was to quickly get the real-time dynamic status of regional farmland environmental pollution caused by livestock wastes.[Method] With WebGIS as spatial information platform,the network and digital...
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[Objective]The paper was to quickly get the real-time dynamic status of regional farmland environmental pollution caused by livestock wastes.[Method] With WebGIS as spatial information platform,the network and digital early warning system of farmland environmental pollution caused by livestock wastes was established.[Result] The system realized the functions such as livestock wastes calculation,livestock information query and analysis,nitrogen load quantity estimation of livestock waste,early warning of farmland environmental pollution caused by livestock wastes and visual display of result.[Conclusion] The paper provided scientific basis for the relevant research on farmland environmental pollution caused by livestock wastes.
随着湖南国家农村农业信息化示范省综合服务平台与农村物联网基础平台的运行，对农业大数据的操作与安全提出了新的要求。为了适应这一要求，针对 RedHat 与 MySQL 系统，提出一个基于 Linux 系统可扩展的 MySQL 数据库集群双主多从架...
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随着湖南国家农村农业信息化示范省综合服务平台与农村物联网基础平台的运行，对农业大数据的操作与安全提出了新的要求。为了适应这一要求，针对 RedHat 与 MySQL 系统，提出一个基于 Linux 系统可扩展的 MySQL 数据库集群双主多从架构优化模型。该模型主要由三个设计模块组成，即前端代理层实现主备热切换与读写分离；数据服务层对服务节点进行整合、监控与单一镜像；数据共享层实现远程数据同步备份容灾。测试证明在不提高服务器硬件性能的条件下，仅通过增加服务器数量就能解决整个数据库集群的性能瓶颈问题，而且能够在大批量读写数据的环境下进行有效的服务，加强云平台下农业数据的安全性、健壮性及可靠性。
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