简介:Inordertoovercomethepoorlocalsearchabilityofgeneticalgorithm,resultinginthebasicgeneticalgorithmistime-consuming,andlowsearchabilityinthelateevolutionary,weusethegraycodinginsteadofbinarycodingatthebeginningofthecoding;weusemulti-pointcrossovertoreplacetheoriginalsingle-pointcrossoveroperation.Finally,theexperimentshowsthattheimprovedgeneticalgorithmnotonlyhasastrongsearchcapability,butalsothestabilityhasbeeneffectivelyimproved.
简介:Aimingattheproblemssuchasmorerepeatedlydesignandlongerdesigncycle,inthispaper,thesimilaritytheorywasintroducedtothedesignprocessofthekeystructuresofflotationmachine.TheimpellerandU-shapedtankofflotationmachinesystemwereanalyzedassimilarityunit.Meanwhile,thelevelofsimilarityoftheunitsandthesimilarityofthesystemwerecalculated.BasedontheanalysisoftheimpellerandthesizeofU-shapedtank,thesimilaritycriteriawerederived.Thederivedconclusionsare:(1)Therelationshipbetweenthediameteroftheimpellerandthevolumeofthetankwaspowerfunctionandcalculatedasthesimilaritycriteriaoftheimpeller;(2)TherelationshipbetweentheratiobetweentheU-shapedtank’scross-sectionalareaandimpeller’sdiameterandthevolumeofthetankwaspowerfunctionandcalculatedasthesimilaritycriterionsoftheU-shapedtank.Usingthesimilaritycriterioncombinedwithcomputertechnologyanddatabasetechnologytorealizepartandsystemserializationdesign.Theresultsshowthattheresearchcanavoidrepeatedlydesign,shortendesigncycle,andraisethedesignefficiency.
简介:近年,空管业务量不断增长,空管系统协同决策需求越来越高。而由于传统空管系统存在信息缺乏共享、数据交互机制不顺畅等问题,已成为制约空管业务发展的瓶颈。该文介绍了目前美国、欧盟空管普遍推崇的广域信息管理(SWIM,SystemWideInformationManagement)技术,并以一体化系统为例,分析在SWIM平台建设完成后,各空管系统如何作为作为一项服务与SWIM平台互联,基于SWIM平台与其它系统完成信息交互。笔者开发了一体化系统与SWIM平台互联的适配器原型系统,并部署测试环境,成功将通过适配器处理后的一体化系统航班信息数据通过模拟的SWIM平台发送到其它系统使用。
简介:在当前教学改革中,B/S结构软件开发应用于教育的教学方式不仅是当前形势需求,更进一步地蕴含着教学理论与教学实践的统一。根据B/S结构软件的自身特性,对B/S结构软件开发课程教学当前存在的现状及问题入手,就关键问题提出针对性的策略,本文提出要改善教学模式,包括让学生占据主导地位,增加师生交流等,要注重培养学生实践能力,要注重典型案例教学,如此才能有效改善B/S结构软件开发课程当前存在的困境。