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1、医学学术会议发言稿第一篇：国际学术会议发言稿1.prologuethankyou,mr.chairman,foryourgraciousintroduction.iamhonoredtohavethechancetoaddressyouonthisspecialoccasion.thetopicofmypaperis“transactioncostandfarmers’choiceofagriculturalproductsselling”.theoutlineofmytalkasfolloplehouseholdchoicemodel
2、.thethirdpartcoversthedatausedinthisresearch.andthen,piricalres(更多文章请关注：.hAOpleconclusionisgiven.2.introductionoveonthefirstpartofthistopic.themotivationofthisicspositsthatagentsmakingdecisionsondifferenttypesoftransactionsdosoinacostlyple,farmersdecidingsellaparticularc
3、roptobasetheirdecisionsnotonlyonthepricetheyexpecttoreceiveineachmarketchoicebutalsoonadditionalcostsrelatedtotransactinginthesemarkets.iple,givensomemarketchannels,farmers’choicescanberegardedasequilibriumbetarketandthetransactioncosthasbeenthehardconstrainttofarmers.fu
4、rthermore,farmers’marketchoicescanbetakenasachoicedilemmaoftransactioncostandproductionsurplus.consequently,thescientificquestionofthisresearchishoethodologylet’smovetothetheoreticalmodelofourresearch.considerahouseholdmodelinonerotation.instage1,famerηneedstoallocatethe
5、inputfactors.thisprocesscanqbesetintoafunctionlikethisq??q(p,eanstheoutputfarmersdecideqtoproduce.pimpliestheoutputpricepliesinputpriceand.z:?isfixedinput.onceproduceanyaredecided,nextquestiontobeconsideredishouchproductstobetransactedinmarket.hereeanshouchagriculturalpr
6、oductsusedbyfamersthemselves.pimpliesthepricethecagriculturalproduct,z?suggeststhefluctuationofcη.thesecondequationq??q??c?,qηmeanstheamountofagriculturalproductstransactedinq?n?market.thethirdequationi?q?impliestheamountexchangedinnthtime.instage3,farmers.chanelj’smarke
7、tpriceisbdecidedbyanexogenesispriceandfarmers’negotiatingpoatrixtoshoers’choicecanbeexpressedinatypicalchoicemodelexp(xij?)pr(ji?j
8、xik)?1exp(xij?)?k?1basedonthechoicemodel,anotherimportantconceptisfamers’channelchoice.here,arketbarriers.accordingly,bertoexpressthem.y:dep
9、endentvariabley=5,meansfarmerchoosebrokers.y=1,farmerssellproductstoconsumersdirectly.4.dataandestimati
