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    Research on Ontology-Based Cross-Domain Virtual Prototyping Technology
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    Based on the relationship between WBS and project network,the hierarchical network planning model,method and strategy were proposed.
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In this paper an automatic information retrieval and organiztion system is des-cribed.A reader has only to send in 1 to 6 keywords to define the scope ofliteratures he wants to study,and the machine will search among its collections(i.e.the data base) to pick out the literatures required The stystem is realized ona micro computer (CROMEMCO System 2) with 64k bytes RAM and two 5″ diskdrives.The programming language used is the 16k extended BASIC of CROMEMCObecause BASIC is the most popular high level language...

In this paper an automatic information retrieval and organiztion system is des-cribed.A reader has only to send in 1 to 6 keywords to define the scope ofliteratures he wants to study,and the machine will search among its collections(i.e.the data base) to pick out the literatures required The stystem is realized ona micro computer (CROMEMCO System 2) with 64k bytes RAM and two 5″ diskdrives.The programming language used is the 16k extended BASIC of CROMEMCObecause BASIC is the most popular high level language on the mini and micro com-puters in this country.The system is characterized by its three special features.1.The fuzzy subset is employed as the mathematical model to classify theliteratures in the data base.This method is especially effective in treating thoseliteratures that are related to several different specialities.2.The scatter storage structures are used to organize the keyword list so that thetime required to search for a keyword will not increase in proportion to the contentsof the data base.3.The whole system should be compatible with the limited memory size of themicro computer.Discussion Under the present condition of our machine the data base may containup to 5000 documents.The system is tested with a model data base of 162 records.The time required to wait for the response of the retrieval system for different setsof inquiry keywords is recorded.The maximum period is 98 sec.,while the minimum is 23 seconds.Most of the waiting time is spent on disk I/O.It is expected thatif the system is extended with a hard disk drive,the waiting time will be diminished10 times and the data base may be greatly expanded.It is further suggested that thesystem may be modified by employing the fuzzy clustering technique to speed up theinformation retrieval process if the data base is expanded to a considerably large size.

本文介绍一个自动情报检索与组织系统。读者送入1至6个关键词来说明他所要研究文献的范围。机器在储存的文献即(数据库)中搜索并检出读者需要的文献。本系统实现在一台 Cromemco系统2微型计算机上,配备有64K 字节的内存和两只5英寸软盘驱动器。程序用 Cromemco的16K 扩展 BASIC 编写,因为考虑到 BASIC 是我国微型机与小型机上应用最为广泛的高级语言。本系统具有三个特点:1.应用模糊子集合作为文献分类的数学模型,这个方法对处理专业的文献分类特别有效,2.应用散列存储结构来组织关键词,这样在关键词的队列中搜索某一个关键词的时间就不致于随着数据库的容量而有显著的增长,3.整个系统应当能被容纳入微型计算机有限的存储空间之中。讨论:在目前机器条件下,数据库容量可以容纳5000篇文献。程序在162篇文献的模型文献库基础上进行调试,对于不同组合的提问关键词组,系统的响应时间有所变化,最长响应时间为98秒,最短为23秒.绝大部份等待的时间化在软盘与内存交换讯息的过程上面,估计如系统增加一套硬盘机,等待的时间可以缩短到十分之一,而且数据库也可扩大很多。再进一步考虑到数据库扩展到相当规模时,系统...

本文介绍一个自动情报检索与组织系统。读者送入1至6个关键词来说明他所要研究文献的范围。机器在储存的文献即(数据库)中搜索并检出读者需要的文献。本系统实现在一台 Cromemco系统2微型计算机上,配备有64K 字节的内存和两只5英寸软盘驱动器。程序用 Cromemco的16K 扩展 BASIC 编写,因为考虑到 BASIC 是我国微型机与小型机上应用最为广泛的高级语言。本系统具有三个特点:1.应用模糊子集合作为文献分类的数学模型,这个方法对处理专业的文献分类特别有效,2.应用散列存储结构来组织关键词,这样在关键词的队列中搜索某一个关键词的时间就不致于随着数据库的容量而有显著的增长,3.整个系统应当能被容纳入微型计算机有限的存储空间之中。讨论:在目前机器条件下,数据库容量可以容纳5000篇文献。程序在162篇文献的模型文献库基础上进行调试,对于不同组合的提问关键词组,系统的响应时间有所变化,最长响应时间为98秒,最短为23秒.绝大部份等待的时间化在软盘与内存交换讯息的过程上面,估计如系统增加一套硬盘机,等待的时间可以缩短到十分之一,而且数据库也可扩大很多。再进一步考虑到数据库扩展到相当规模时,系统还可以应用模糊聚类的技术改进功能,以压缩情报检索过程的等待时间。

The development of analycal methods of techniques of colored schlieren-image system, which were first Presented by Holder, D.W. and Nofrth,R. J.in National Physical Laboratory in England in 1952 is discussed, and photo-graphs of colored schlieren taken in some experiments of FG-03 free-jet inter-mittent Subsonic--transonic--Supersonic wind are sho wed in this paper.

本文综述和讨论了1952年英国国家物理实验室Holder,D·W·和Norh,R·J·首先报告的彩色纹影装置以来,彩色纹影技术——成象系统及其分析方法的发展,并提供在FD—03号自由射流暂冲式低、、超音速风洞设备上的一些实验彩色纹影图片供分析研究。

A microcinputer program system for structural analysis of tall building is drawn up in Advanced BASIC Language. It is suitable for IBM-PC/XT type of computer. Two programmes are included in it. one for distributing horizontal loads on each piece of plane system by considering their teamwork in space, the other for calculating displacements, internal forces, and rainforced steel bars for any pie:? of the plane systemsss,both of them can be used in analysing frame, frame梥hear wall, shear wall schemes. The building...

A microcinputer program system for structural analysis of tall building is drawn up in Advanced BASIC Language. It is suitable for IBM-PC/XT type of computer. Two programmes are included in it. one for distributing horizontal loads on each piece of plane system by considering their teamwork in space, the other for calculating displacements, internal forces, and rainforced steel bars for any pie:? of the plane systemsss,both of them can be used in analysing frame, frame梥hear wall, shear wall schemes. The building struclures can contain arditrary obliqus frames. The programs can be used to design the buildings of 33 storeys and 10 spans. The efficientuse of function of disk files is raabe, a large numder of disk files with many field-are adopted, and interchangeable use of single and double-precision type is made so that storage cells are saved, spe?d of operation is put on, and the necessary accuracy is guaranteed.

本文用Advanced BASIC语言编制了一套适于IBM-PC/XT型机的高层建筑结构分析微机程序系统。该系统包括考虑结构空间协同工作的水平载荷分配及单榀的位移、内力和配筋计算两部程序,适于框架、框架—剪力墙和剪力墙结构。结构可含任意布置的斜向榀。解题规模达32层10。程序中充分利用微机的磁盘文件功能,广泛设置多场磁盘文件,并采用单—双精度混合制,节省了存贮空间,提高了计算速度,并能保证必要的精度。

 
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