This article investigates the general rule of children ' s cognitive development at the degrees of number , space and narrative , and analy / es the synchronization and un - synchronization of cognitive development . it validates and develops case ' s theory from the factors such as nationalities , regions , nations , ages , gender , and tries to enrich the theory of children ' s cognitive development . to attain the aim , the author reforms case ' s experimental design in chinese thinking and unifying qualities , and comes up with four experimental designs , such as " the children ' s daily mathematical knowledge - the skill about dealing with money " , " the children ' s spatial structure - mapping " , " the children ' s senses of parental role " and " the children ' s understanding capabilities about society " 因此，凯斯等人的儿童认知发展的“结构一过程”理论，它是以皮亚杰的一般性理论为基础，从研究儿童执行控制结构和工作记忆开始，进一步拓宽到研究知识领域、标准组件理论，把儿童认知过程分解为一系列基本领域，对数、社会性和空间等中心概念结构进行了广泛的研究;在对儿童认知发展的每一个领域进行单独研究的过程中，发现了不同领域任务之间的同步现象，从而沟通了信息加工的组件理论和一般性理论，建立了新的儿童认知结构理论。
In order to ensure to process regularly the daily maintenance management , this paper is based on the theory and method of database design and the theory of pavement management system , combining the application environment and operation flow of the expressway maintenance system , bringing forward the four stages of the expressway maintenance system design which are the requirement analysis of consumers , conception framework design , logic framework design and physical framework design , scheming out an optimum database mode applied to all kinds of expressway maintenance systems , and establishing a common database application system , so that the expressway maintenance system can evaluate the pavement performance , forecast the pavement performance and make decisions of the pavement maintenance 为了保证高速公路日常养护管理正常有序的进行,本文根据数据库的设计原理、方法及路面管理系统原理,结合高速公路养护管理系统的实际应用环境和操作业务流程,提出了高速公路养护管理系统数据库设计的4个阶段? ?用户实际需求分析、概念结构设计、逻辑结构设计和物理结构设计,设计出适用于各种高速公路养护管理系统最优的数据库模式,并建立了通用的数据库应用系统,使得养护管理系统能够进行路面性能评价、性能预测和养护维修决策
Meanwhile , according to the four steps in database application system design : system demand analysis , general structure design , logic structure design and physics structure design , the analysis and the design of database in the enterprise management information system are elucidated , and the technique of powerbuilder for the implementation of the human interface based on the web is also explained in the dissertation 同时，本文按数据库应用系统设计的四个步骤：系统需求分析、概念结构设计、逻辑结构设计、物理结构设计详细阐述了该企业信息管理系统的数据库的分析与设计，并详细讲述了用powerbuilder等技术实现基于web的用户界面。
Following the basic principles of database design and guided by software engineering , remote optimization es of plastic die material to meet the needs of enterprises was designed after the research of conceptual and logical structure of data , in which asp is employed to develop active website and dbms based on sql server was designed 作者遵循数据库设计的基本原则，以软件工程为指导，经过对数据的概念结构、逻辑结构的分析研究，以asp技术开发动态网站，采用sqlserver2000为基础的dbms ，设计完成了符合企业运行特点的塑料模具材料远程选择优化专家系统。
