Comparing with traditional ones , oo analyse and designment methods own distinct advantages , which are suitable for almost every fields to construct wide - scale systems , and can offer sustainments for various kinds of current oo progam languages , operation systems and other developing tools 面向对象的系统分析与设计适合于在各种问题域中建造各种规模程度和复杂度的系统,并能为当前流行的面向对象的程序语言、操作系统和工具提供有力的支持,与传统面向过程方法相比具有明显的优越性。
Lbie , based on the local boundary equation , adopts the traditional moving least squares ( mls ) approximation which depends on only the values of the nodes in the domain of the problem or along its boundary . the whole process of integration is carried on over a local domain or its local boundary centered at the node in question . the local boundary equation can be rewritten to represent the values of the unknown function at the point of interest , and the essential boundary conditions can be directly and easily enforced by using the green formula and the characters of the dirac function 它以局部边界积分方程为基础，采用移动最小二乘近似函数，从而只需要分布在问题域内及其边界上的节点的信息值，无需划分单元；整个积分是在以节点为中心的局部域及其边界上实现，所以不需要背景积分网格；借助于格林公式及dirac函数的性质，将局部边界积分方程转化为所考虑点的未知函数的边界积分表达式，便于直接施加本质边界条件。
Object - oriented technology ( oot ) is applied to analysis and design of this system . a great of efforts have been made to define objects , classes and their relationships , divide subjects and describe functions . the design work is proceeded from three aspects : problem domain , human interface and data management 为提高系统的适应性和灵活性，采用面向对象技术进行系统分析与设计：定义了系统中的对象及其相互关系、进行了主题划分和功能描述等工作，绘制了完整的ooa阶段的类图，并对问题域部分、人机界面部分、数据管理部分进行了详细设计工作。
It is well known that correct cognition about problem is the principal precondition of software development . faced with different user - requirement , how to acquire the demand of object system and build the requirement model of it quickly and accurately has been a sticking point in software development 众所周知，对问题域的正确认识是软件开发的首要前提，面对千差万别的用户要求，如何能够快捷、准确的获取系统的需求并建立起无歧义的、完整的需求模型已成为软件开发中的核心问题。
Digital libraries had been adapted from traditional library , although it may have information resources through title , keyword , author , content classification retrieval features , etc . for connection , even a simple text arbitrary word retrieval , but for the people to solve problems , the figures did not provide accurate and comprehensive libraries , systems , and knowledge to information 知识图书馆是数字图书馆的延伸,它是利用现代管理理论与先进信息技术,对文献资料中的知识子集进行组织与管理,并能向用户提供面向用户问题域的片断知识或主题知识,以辅助用户决策与创新的图书馆。
To achieve information integration in manufacture process , this paper , with reference to dnc , researches into manufacture process information integration from 3 aspects : data level , function level , application level , presents the management information integration framework （ miif ） based on distributed control technology , builds meta - agent and application agent by regarding agent as an entity having special behavior ability and specific action objective , establishes agent control model , and then gives the collaborative solution . with field - bus technology and agent technology , the dnc system model based on agent technology is established which shows a efficient way of device integration . a general model of device integration is set up , and an agent model based on soft plug - in technology is built 该模式包括面向制造过程的车间生产管理与控制的上层结构和面向车间设备的加工控制的下层结构；为实现制造过程信息的集成，本文从三个层面：数据层面、功能层面、应用层面上阐述了车间制造过程信息的集成方式，并借鉴dnc思想，建立了基于分布式控制技术的制造过程信息集成框架（ miif ） ；采用面向对象方法，对miif中的代理体从定义抽象、结构和功能等进行了深入研究；从知识层面上的三个层次：语言规范、会话机制、问题域对miif的多agent协作进行研究，建立了多agent交互的形式化模型。
Making using of ipd ' s methodology and considering the structural feature of helicopter , the requirement - driven epd ' s model for helicopter design has been put forward , and it integrates requirement model , process model , organization model and product model . then , the implementing method which applies this model to helicopter design has also been discussed 通过对集成产品开发方法论的研究，结合直升机结构特点，提出面向直升机设计、需求驱动的集成产品开发模型，从问题域和方案域的角度，探讨了需求模型、过程模型、组织模型以及产品模型之间的关系，研究了该模型用于直升机设计的实施方法。
