Quantitative information measurement and application for machine component classification codes

Information embodied in machine component classification codes has internal relation with the probability distribution of the code symbol. This paper presents a model considering codes as information source based on Shannon’s information theory. Using information entropy, it preserves the mathematical form and quatitatively measures the information amount of a symbol and a bit in the machine component classification coding system. It also gets the maximum value of information amount and the corresponding coding scheme when the category of symbols is fixed. Samples are given to show how to evaluate the information amount of component codes and how to optimize a coding system.     

一种使用分档方式统计字符串频率的新算法

针对搜索引擎查询结果集中的相同记录出现次数的统计问题,提出了分档统计的算法。该算法在时间上比逐个字符统计频率快,能够达到O（n）的时间代价,算法还针对长字符串（字串的长度与字串的个数相差不多）进行了优化,降低了计算规模。     

高校资产管理信息系统平台的建设与应用

随着高校办学规模的日益扩大,固定资产投入的不断增加,原有的手工、单机管理模式已跟不上现代高校资产管理的需求。介绍了基于东华大学校园信息门户、学校业务系统数据共享、统一身份认证的东华大学资产管理信息系统平台建设及应用,提出了资产管理网络化是高校资产管理的大趋势。     

Software Development for Digital Control of WDW Series Testing Machine and Measurement of KIC

Software has been developed for digital control of WDW series testing machine and the measurement of fracture toughness by modularized design. Development of the software makes use of multi-thread and serial communication techniques, which can accurately control the testing machine and measure the fracture toughness in real-time. Three-point bending specimens were used in the measurement. The software operates stably and reliably, expanding the function of WDW series testing machine.