简介：Inthispaper,usedBSO(Bi12SiO20)crystalasahologramrecordingmaterial,TV-cameraasadetector,andaholographicsetupcontrolledbyacomputer,automaticallycalculatinghologramof3-interferogramsmethodistheoreticallyandexperimentallystudied.Thisnewholographicrecordingmaterialandautomaticallycalculatinghologrammakeitpossibletousereal-timeholographyinanindustry.Asapracticalexample,theshrinkingof2-componentsadhesivein4hismeasured.

简介：Selectionoftestcasesplaysakeyroleinimprovingtestingefficiency.Black-boxtestingisanimportantwayoftesting,anditsvalidityliesontheselectionoftestcasesinsomesense.Areasonableandeffectivemethodabouttheselectionandgenerationoftestcasesisurgentlyneeded.Thisletterfirstintroducessomeusualmethodsonblack-boxtestcasegeneration,thenproposesanewalgorithmbasedoninterfaceparametersanddiscussesitsproperties,finallyshowstheeffectivenessofthealgorithm.

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简介：ThepurposeofthepresentstudywastouseCoh-Metrix,acomputationaltool,toexaminetherelationshipbetweendiscoursecoherenceandwritinglevel,andanalyzethecoherenceofhighlevelwritingandlowlevelwriting.Thestudyuses5Coh-Metrixvariablestoanalyze40collegestudents’timedcompositionsfromChineseLearnersEnglishofCorpus(CLEC)andtheircorrespondingreadabilityscores.ThestudydemonstratesthatCoh-Metrixvariables,numberofwords,wordspersentences,theFlesch-KincaidGradeLevel,LSAsentenceall,andargumentoverlapcancontributetotextcoherence.Findingsofthestudyindicate:thereisarelationshipbetweendiscoursecoherenceandwritinglevel,butthereisnosignificantdifferencebetweenhighlevelgroupandlowlevelgroupindiscoursecoherence(p=.409>.05),andwritinglevelcannotdistinguishdiscoursecoherenceinEFLlearners’writing.