Based on the points , this thesis studied wi as a whole , and obtained the following results : ( 1 ) ontology - guided techniques and architecture of wi system ; ( 2 ) deductive object model with semi - structured features ( domsf ) as the unified data model for wi system 在此基础上对wi进行全面的研究，获得以下研究成果： ( 1 )以本体模型( ontology )为指导的wi系统方法和结构。 ( 2 )演绎的带有半结构化特征的对象数据模型domsf ，作为wi系统的统一数据模型。
The theory and techniques of modeling method related to petri net have been mature today , so we extend some functions based on it and construct the color extended petri net ( cxpn ) suitable to engineering design and project management . considering price , efficiency of retrieving and storage for data model , and degree of technologies maturity and so on , we choose rdbms to store data model of edwfms . because engineering design process has the properties of long duration , this paper presents a design transaction model of long transaction management so that it supports characteristics of engineering design process 由于目前商用工作流管理系统中petri网建模方法的应用已经比较成熟，所以本文以petri网的建模方法为基础，对其进行相应的扩充，构造出适合于工程设计项目管理业务流程的着色扩充petri网( cxpn网)建模方法；综合考虑价格、数据模型的存储与检索效率以及技术成熟度等因素，选取关系数据库对工程设计项目管理工作流( edwfms )系统的对象数据模型进行存储；对于工程设计过程中的长事务管理给出了支持协同工作的扩展事务模型，同时对长事务管理中的几个关键技术进行了研究；提出了基于版本树的资源对象版本管理模型，对复杂的资源版本进行控制；最后，给出了支持分布式工程设计项目管理工作流系统的扩充c s应用体系结构。
Moving objects database is aimed to manage large numbers of moving objects , supporting the temporal and spatial queries which traditional database can not . this data model of moving objects database based on road network can manage the moving objects effectively , through converting the road network into digital information . the model can reflect the dynamic status of each segment , so it predicts the future positions of moving objects precisely 移动对象数据库对大量移动对象的位置信息进行管理,能够支持传统数据库不能进行的时空查询,考虑到大多数移动对象的运动都固定在已知的路线中,基于公路网的移动对象数据模型、通过对公路网拓扑图的数字化转换,能够对移动对象进行有效的管理,该文采用实时平均法来反映每条线路的动态运行情况,对移动对象未来位置进行了精确预测。
