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:随着社会经济的发展与科学技术的持续进步,信息网络技术目前已经得到较大范围的普及,越来越多的盲人也逐渐受到信息网络技术的影响,计算机也成为盲人生活的一部分。盲人计算机教学的根本目的是为盲人提供更多的职业技能和生活技能的学习机会,保证盲人在适应时代发展同时有效实现自己的人生价值。我国盲人计算机教学起步较晚,但近些年来得到较为充分的发展。做好盲人计算机教学工作从盲人的生理心理特点和计算机课程教学的根本特点出发,本文主要分析盲人计算机教学的必要性与重要性,并针对当下盲人计算机教学现状提出一些提高盲人计算机教学效率与质量的建议性措施,以期为我国盲人计算机教学提供有效借鉴经验。