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1、时变需求下基于两层次信用支付策略的供应链库存模型312Vol.31,No.220112SystemsEngineering—Theory&PracticeFeb.,2011:1000-6788(2011)02-0262-08??:O2:A%JI34KH4!%5&7&;-6#8$978:;%#&1,'2,()3&,1(1.,%6223;06#01&;2.??2'*!340#,#$%5110%564+60;3.,230026*)!;,2-#,.'(/)*+01,#-.,#$
2、/.$,9:7;1<#''4=<,>=&7>6?@;1<#?@AB.;C*D7E@ABCD,FGE;'7FGH.IJ;8:;%;57-6Supplychaininventorymodelwithtwolevelsoftradecreditandtimevaryingdemand1231MINJie,ZHOUYong-wu,LIUYao-xi,OUJian(1.DepartmentofMathematics&Physics,AnhuiUniversityofArchitec
3、ture,Hefei230601,China;2.SchoolofBusinessAdministration,SouthChinaUniversityofTechnology,Guangzhou510640,China;3.ManagementSchool,UniversityofScience&TechnologyofChina,Heifei230026,China)AbstractTraditionalsupplychaininventorymodeswithtradecreditusuallyonlyassumedthattheu
4、pstreamsuppliersofferedthedownstreamretailersafixedcreditperiod.However,inpracticetheretailerswillalsoprovideacreditperiodtocustomersinordertopromotethemarketcompetition.Thisarticledevelopedanoptimalsupplychaininventorymodelundertwolevelsoftradecreditpolicyandlineartime-varyi
5、ngdemand.Theexistenceanduniquenessoftheoptimalsolutiontothepresentedmodelareexamined,andaneasymethodisalsoshowntofindtheglobaloptimalinventorypoliciesoftheconsideredproblem.Finally,numericalexamplesandsensitiveanalysisarepresentedtoillustratethedevelopedmodel.Keywordssupplych
6、ain;inventorycontrol;twolevelsoftradecredit;ti#,mevaryingdemand1LM??,.,??,NRV'OS.W#PT$,XQU%%??(-(??$,.,.,.!;!,&1985;Goy,%![1;]al&#!++(%)*$,'#.;;:Teng[2]')(#[3].LiaoEPQ)%!$;*#*,:2010-05-06:&'++(%)*(70971041,70772029,71072165);$+,(10040606Q10);$+
7、,&,-++(%(KJ2010A063);/&,,&./0(%'.(-(08JDXM63003):-1(1978–),0,$+.).,'*,(2+,'.),*1+3/014,-2052364,E-mail:min-jie@aiai.edu;34.(1964–),0,$+57.,2+,'*6-7,'.),:5664,52364..3B?52C3??8@6:=D-1,.4:78//90)7:0118923;45231+<2263[4].Sana$Chaudhuri;�
8、39;>$#<[5]EOQ.Chung$Huang58@88@A)(;6*9.;7,Ouyang[6]5*F;;.!8@$=
