B-积分下的原函数

讨论了Ｂ可积函数原函数的导数问题，由此得到了Ｂ积分的一些性质．     

动态数据库规则获取和更新的粗糙集方法

随着客观世界的发展变化，新模式会不断地增加到数据库中，在已有的模式中会增加新成员，这就导致以前得到的规则集需要随之更新，在利用粗糙集方法获取规则的基础上,提出两种规则更新方法，并提出规则获取和更新的一般理论模型，强调充分发挥决策者和分析人员的主观能动性的重要性，根据客观实际提出新模式和原有模式中的新成员，以满足不断变化的外部情况，而不只是单纯依赖机器决策，并以实例说明。     

近似方程在换热器设计中的应用

在换热器的设计及换热系统网络优化中， 对数平均温度差（ ＬＭＴＤ） 的计算有十分重要的意义－ 本文对已提出的近似方程代替对数平均温度差的计算方法进行了评价， 指出Ｊ． Ｊ． Ｊ． Ｃｈｅｎ 提出的近似方程在换热系统网络设计中优于其他方程     

Reasoning Efficiency Research of Expert System for Biomass Soft-Sensor Modeling in Fermentation Process

An expert system for biomass soft-sensor hybrid modeling in fermentation process was decribed in this paper.A production rules representation based on database was presented.The definitions of production rules for biomass soft-sensor hybrid modeling knowledge were proposed.A knowledge base with layered structure was introduced.A breadth-first reasoning approach based on match degree(BFMD) was developed.The definition and calculation method of match degree were illustrated.Compared with the depth-first reaso...     

新型的桥式起重机定位系统

本文针对当前桥式起重机追踪定位系统的定位方式上存在定位手段过于原始、定位精度不够、工作效率很低的问题,提出采用激光测距仪和条码定位系统对桥式起重机进行追踪定位的新型系统,应用结果显示,文中所提定位系统较原有定位系统在定位精度上提高了200倍,工作效率有很大提高,并间接地降低了起重机作业中的能耗.     

不可逆加成-断裂链转移剂正丁基-2-苯基烯丙基硫在苯乙烯乳液聚合中的研究

基于不可逆加成断裂链转移机理,研究了正丁基-2-苯基烯丙基硫（BPAS）作为分子量调节剂对苯乙烯乳液聚合速率、乳胶粒子大小和聚合物数均分子量的影响。结果表明，BPAS存在下的苯乙烯乳液聚合速率有所下降，乳胶粒子粒径减小，这是由于乳胶粒子中自由基的解吸附；平均一个乳胶粒子中的自由基个数依赖于BPAS浓度；BPAS在苯乙烯乳液聚合整个过程中能有效调节聚合物分子量，其调节效率与温度无关，同时能与经典的数均分子量数学模型相匹配。     

锅炉风机变频技改浅析

分析了阳泉市南煤龙川发电公司锅炉风机目前采用的液力耦合器调速方式存在的问题,阐述了锅炉风机应用高压变频器的可行性,介绍了锅炉风机的节能效果.     

中华绒螯蟹Eriocheir sinensis幼体丝状细菌的扫描电镜观察

应用扫描电间对中华绒螯蟹幼体附着的丝状细菌进行了详细的观察，结果表明，丝状细菌只附生于幼体表面，没有明显伸入体内的结构，丝状细菌行裂殖生殖，生长繁殖所需营养直接摄取自水环境，并对其危害性以及防治等方面进行了探讨。     

Surface Treatment of UHMWPE Fibers for Adhesion Promotion in Epoxy Polymers

Surface of Ultra-high molecular weight polyethylene （UHMWPE） fiber were treated by chromic acid chemical etching, pyrrole chemical vapour phase deposition and the complex of these two methods, respectively. The change of surface properties and structure of fibers were discussed by Fiour Transform Infrared Spectroscope （FTIR）, Dynamic Mechanical Analysis （DMA） and Scanning Electron Microscope （SEM）. The results show that some new oxygenous groups could be found on surface of UHMWPE fiber after chromic acid chemical etching, which enhanced intemolecular interaction with polypyrrcle. The adhesion of the fiber and resin natrix increased after pyrrole chemical vapour deposition. When chromic acid etching combined with pyrrole chemical vapor deposition, the treated fiber not only has the same properties as original fiber bat also outstanding adhesion to epoxy resin matrix, and its composites have better mechanic properties shear strength）, resulting from intemolecular interaction treated fiber and polypyrrole.     

Construction of orthogonal multiwavelets with short sequence via genetic algorithm

A multiwavelet can possesses the properties of orthogonality, symmetry, and compact support simul taneously, which is impossible for scalar wavelets. A method to determine the multiwavelets from a class of multi-scaling functions is presented using the genetic algorithm, which not only makes the guideline to find multiwavelets clearly and simplely, but also lays a foundation for the application of multiwavelets theory.