According to report , the named " reseach and development of low bus noise " project has been set up the key reaserch subject by xiamen municiple , the research project has getting 1 million yuan supports funds from municipal government . the full name of avl company which cooperated with king - long compay , is austrian avl liszt inner consuption engine and tests euipment institute , its a famous international compay with abudant experience in the vehicle noise researchment area 今年以来，宇通的身影频频在国家的各项重要公益事业上出现，从赞助“亚洲杯足球赛” “中标国家中西部地区医疗巡回车” “红色旅游活动”到此次“第三届国际丝绸之路大会宣传万里行活动指定用车” ，都体现了宇通强烈的社会责任感和对公益事业的关注与支持。
On the basis of the topological theory of spatial objects , we give abstract definitions of various basic spatio - temporal topological predicates by integrating the factor of time ; then developed from the basic level , for the purpose of reflecting sufficiently the dynamic nature of spatio - temporal objects , complex topological predicates are explored ; at last , based on the data structure of avl used for moving objects , spatio - temporal topological analysis algorithms are specified , which makes the use of the concept of realms and rose algebra and is implemented by integrating plane sweep algorithm with the factor of time interval 首先在空间对象拓扑理论的基础上，结合时间因素，详细给出了各种基本时空拓扑谓词的抽象定义；然后为了能够充分地反映时空对象的动态性，文章又深入探讨了复杂的时空拓扑谓词；最后基于realms概念和rose代数，根据时空数据库中移动空间对象存储的平衡二叉树的数据结构，用平面扫描算法结合时间域的方法实现了具体的时空拓扑分析算法，并进行了时间复杂性讨论。
Taking the introduced avl emission test equipments as the development object , this paper sets up a vehicle exhaust host computer system and establishes a distributed computer system as controlling scheme . by serial transmission technology and the ak communication protocol among the emission test equipments , the hardware is founded . by directed to object programming technique and visual programming language , the software of host computer system is developed 本文以引进的avl排放测试设备为开发对象，建立了汽车排放主控计算机系统，确定其控制方案为分布式计算机控制系统；利用串行端口通信技术，以排放测试设备之间的通信协议? ak协议为基础，构建了系统硬件；采用面向对象的编程技术及可视化的编程语言vc + +开发了主控计算机系统软件。
Embedded gis realizes the function of mobile gis . the function of mobile calculating is partaking the calculating pressure of center information system , offering useful and real - time information to any user at any time and any space . with the gps / avl ( gps / automatic vehivle location ) system as application background , this dissertation discussed the following issues . gps coordinate transformation to correct the wraps of gps when they are displayed on electronic map 本课题主要是对gps与gis集成中的关键技术进行研究，如： gps信号是如何接收和处理的、 gps信号在pocektpc上的地图实时显示的方法、 gps信号点的地图匹配(包括在不同坐标系统下的处理过程) ，嵌入式系统的地图数据组织采用“ lod ”思想进行了分析， gps / gis集成环境的选择，开发移动gis系统应该考虑的问题。
