The term of " digital earth " is put forward in 1998 . in order to resolve the conflict between the large amount of information and satisfying utilization , it provides an integrated information system with a uniform structure model . “数字地球”的创意是1998年被提出来的，它针对人们拥有海量信息却无法充分利用这一矛盾提出了解决问题的基本框架，并力求用一种统一的结构模型开发出可以汇集全球信息的信息综合系统。
As the hla object model plays a key role in federate development , the technologies about hla object model construction are studied firstly . and then , we designed a tool named yh - omgen , which can well satisfy those needs . the yh - omgen is implemented by c + + and rdbms 针对对象模型在邦元开发过程中的重要地位，本文首先研究了hla对象模型相关技术，提出了一个支持对象模型开发和管理的工具yh - omgen ，并基于c + +语言和关系数据库进行了实现。
Based on the analysis of requirement for logistics system , combining with model - based design methodology , the paper present the analysis and design of all sub - system for logistics information , which includes process model , data concept model , data logic model and user interface 本文在总结企业物流系统需求分析的基础上,结合模型开发方法,分析并设计了物流管理信息系统的各个功能子系统的过程模型、数据逻辑模型、数据概念模型以及用户界面。
Combing the advantages of mda , this thesis put forward a component development method , that is mdac ( mda - based component development ) . the main idea of mdac is that developing , implementing , compositing , and reusing components by modeling , model transformation , model integration , and model reuse . the main work of this thesis as follows : ( 1 ) study the framework , related concepts , key technologies , and the importance of mda 本文在深入研究mda架构的基础上，通过使用mda的优点来弥补当前构件技术的不足，提出了一种系统的、全面的基于mda的构件开发方法? ? mdac方法，其主要思想是融合模型驱动和构件的思想到软件开发生命周期的各个阶段，利用模型来开发构件，化构件开发为模型开发，化构件组装为模型组装，化构件实现为模型映射，化构件复用为高层设计的复用、模型的复用。
Two studies , namely development of employment projection model for strategic land use planning and commercial and industrial floor space utilization survey commenced in 2004 to develop models for long - term employment projections and to collect statistics for updating the parameters required for compilation of employment distribution projections 本署于二零零四年展开两项名为用于策略性土地规划的职位数目推算模型开发研究及工商业建筑物楼面空间使用情?统计调查的顾问研究。
In the practice editing work of scholarship periodical , the author found it is very difficult to resolve some problems in the old publishing model . so in this article , we researched on the scholarship periodical co - editing , analyzed the modal of co - editing and then bring upped a periodical co - editing . model based on cscw ( computer supported cooperative work ) and xml theories and technique 笔者在从事学报编辑工作的实践中，发现旧的出版工作流程中存在许多难以解决的矛盾，基于此，论文选择学术期刊协同出版为研究对象，以实现学术期刊出版的自动化、规范化为目标，在分析协同出版工作的需求和模式的基础上，以计算机支持的协同工作( cscw ： computersupportedcooperativework )和xml理论与技术为手段，提出了一种基于web的期刊出版管理协同工作模型，并依据此模型开发了一个可行的原型系统。
Got the fostering energetically of four - dimensional company since bell model company established , is it produce many kinds of electronic to develop , the oil move the radio telecontrol model plane , the company possesses the stronger model and develops , designs and processes manufacturing capacity , hold concurrently and design the business of the light - duty aircraft , not having man - machine , drone aircraft etc . at the same time 贝尔模型公司成立以来得到了四维公司的大力扶植，研制生产出多种电动、油动无线电遥控模型飞机，公司具备较强的模型开发、设计和加工制造能力，同时兼承接设计加工轻型飞行器、无人机、靶机等业务。
Finally , this dissertation reviews the federation security and the next works need to do . in practice , this dissertation has creatively finished the following works : to derive and expand the theory and method for simulation development based on hla ; to develop the object model developing tool kd - omdt that is complied with dmso hla omt specification and will be updated to comply with ieee 1516 . 2 soon ; to design and guide to implement the object model library ( oml ) shared by internet net ; to modify a large scale flight analysis and training system with hla ; to use the case tool rational rose to develop hla simulation system ; to design and guide to implement a automatic tool used to develop hla simulation with matlab / simulink 特别地，本文在实践中创新性地完成了以下工作：系统地提炼、扩展了基于hla进行仿真应用开发的原理与方法；开发了具有自主版权、符合dmsohlaomtv1 . 3规范的对象模型开发工具kdomdt ，向ieee1516 . 2的移植工作正在进行当中；设计并指导实现了基于internet网共享的hla对象模型库( oml ) ；成功地采用hla对某大型飞行分析训练系统进行了改造；成功地将case工具rationalrose软件应用于hla仿真系统的开发；设计并指导实现了基于matlab simulink开发hla仿真应用的自动化工具。
There is a chemical reserve zone in the stack . in this zone the fe is present as feo , and the gas component is close to the balance composition of fe0 . 947o / fe . so there is a part of longitudinal section , in which : l ) gas keeps its component , as ascending . 2 ) the composition of the gas is close to the equilibrium composition of the fe0 947o + co - " 0 . 947fe + co2 under the temperature of the thermal reserve zone of about 1200 + 100k 根据冶炼理论，高炉在炉身一定高度上有一个“化学贮备区” ，在该区，含铁物料实际上都是浮氏体，并且煤气成分接近fe _ ( 0 . 947 ) o fe平衡时的成分，这样，高炉内存在高炉热控制模型开发一个纵向区域，在该区内：二）煤气上升时，成分不变。
During the process of setting up the data warehouse , it merges the thoughts of two kinds of design methods ‘ from bottom to top ’ and ‘ from top to bottom ’ , develops and analyzes the topics with the multidimensional model , guarantees to implement quickly and obtains investment repayment rapidly . then , on the basis of making actual effect , it increases the application topics gradually , advances step by step , accumulates experience , therefore it will build up an enterprise layer data warehouse progressively 在建立数据仓库的过程中,融合了自下而上和自上而下两种设计方法的思想,以多维模型开发分析主题,确保快速实施,迅速获得投资回报,在取得实际效果的基础上,再逐渐增加应用主题,循序渐进,积累经验,由此逐步建成企业级数据仓库。
