The prerequisite of evaluating kinds of electricity generation technologies scientifically and fairly is to establish a unified conception, model and method of the generating cost accounting system.
科学与公平地评价各种电力生产方式的前提是建立统一的成本核算概念、模式和方法体系。
Firstly introduced the basic conception and model of RBAC96, then according to the real demand of the office automation system, putted forward the access control model.
介绍RBAC96的基本概念和模型，结合办公自动化系统中实际的需求，提出自己的访问控制模式。
This paper introduces how to construct Yangtze River knowledge base based on conception design method, analyze and design conception model, architecture, system flow and system modules.
文章介绍了概念设计方法，分析与设计了长江知识库的概念模型、系统构架、系统流程和系统模块。
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