ch,theproblemoftimeconstraintwillbeencountered.Whatismore,esstothemostup-to-dateliteratureresources.2)Interviews:Duetothefactthattheinterviewshavetobedonefacetoface,someintervieweeswillfeelembarrassment,asaresult,theresultsofsuchinterviewswillbenegativelyaffected.Becauseofthetimelimitationsoftheinterviews,itisreducethedepthofthequestionsintheinterview,whichwillhaveaninfluencethefinalresultsoftheinterviews.Thefacetofaceinterviewshaveahighrequirementfortheinterviewer.Somequestionswillnotgettheexpectedanswersduetotheprotectionoftradesecret.(Barclay,2001,p.p.81-101)Researchmethodologyethicalconsiderations.Duringtheprocessoftheresearch,alltheethicalprincipleswillbeupheld,whatismore,nooneundertheageof18willtakepartintheresearch,lastbutleast,alltheresponsesfromtheinterviewswillbekeptconfidential.
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