学术会议的发言稿开场白四篇VIP免费

下载后可任意编辑学术会议的发言稿开场白四篇【学术会议的发言稿开场白】一1.prologuethankyou,mr.chairman,foryourgraciousintroduction.iamhonoredtohavethechancetoaddressyouonthisspecialoccasion.thetopicofmypaperistransactioncostandfarmerschoiceofagriculturalproductsselling.theoutlineofmytalkasfollows.thefirstpartiwanttointroducethebackgroundofthisresearch.thesecondpartsuggestsasimplehouseholdchoicemodel.thethirdpartcoversthedatausedinthisresearch.andthen,weintroducetheempiricalresults.finally,asimpleconclusionisgiven.2.introductionwell,letsmoveonthefirstpartofthistopic.themotivationofthisworklikethis.institutionaleconomicspositsthatagentsmakingdecisionsondifferenttypesoftransactionsdosoinacostlyway.forexample,farmersdecidingsellaparticularcroptowhombasetheirdecisions下载后可任意编辑notonlyonthepricetheyexpecttoreceiveineachmarketchoicebutalsoonadditionalcostsrelatedtotransactinginthesemarkets.iwanttouseapicturetoillustrateit.forexample,givensomemarketchannels,farmerschoicescanberegardedasequilibriumbetweenthesurplusandtheadditionalcoststhatrelatedtotransacting.especiallyindevelopingcountries,high-valuecropproducersfullyparticipateinthemarketandthetransactioncosthasbeenthehardconstrainttofarmers.furthermore,farmersmarketchoicescanbetakenasachoicedilemmaoftransactioncostandproductionsurplus.consequently,thescientificquestionofthisresearchishowtransactioncostaffectsplanterschoices.3.methodologyletsmovetothetheoreticalmodelofourresearch.considerahouseholdmodelinonerotation.instage1,famerneedstoallocatetheinputfactors.thisprocesscanqbesetintoafunctionlikethisqq(p,w,z),qmeansthe下载后可任意编辑outputfarmersdecideqtoproduce.pimpliestheoutputpricewimpliesinputpriceand.z:isfixedinput.onceproducewhatandproducehowmanyaredecided,nextquestiontobeconsideredishowmuchproductstobetransactedinmarket.hereweusethreecccmeanshowfunctionstodescribethisquestion.thefirstequation,cp,zmuchagriculturalproductsusedbyfamersthemselves.pimpliesthepricethecagriculturalproduct,zsuggeststhefluctuationofc.thesecondequationqqc,qmeanstheamountofagriculturalproductstransactedinqnmarket.thethirdequationiqimpliestheamountexchangedinnthtime.instage3,farmerswilldecidetoselltheproductstowhom.chaneljsmarketpriceisbdecidedbyanexogenesispriceandfarmersnegotiatingpower.pijp*jb(qi,zi)besidesthis,weuseamatrixtoshowthenetprofitofchaneljxikik,ikandthenfarmerschoicecanbeexpressedinatypicalchoicemodel下载后可任意编辑exp(xij)pr(jij|xik)1exp(xij)k1basedonthechoicemodel,anotherimportantconceptisfamerschannelchoice.here,wesetfivetypes.theyrankbythemarketbarriers.accordingly,wesetagroupdiscretenumbertoexpressthem.y:dependentvariabley=5,meansfarmerchoosebrokers.y=1,farmerssellproductstoconsumersdirectly.4.dataandestimationprocedureshere,weillustratethedatadistributionwiththismap.accordingtotheagriculturalregionalizationfromdepartmentofagriculture,theapplespecializationareasinchinacontaintwoparts:boseaareaandloessplateau.boseaareainredcolor,containshebei,shandongandliaoning3provinces.andloessplateauingreencolor,containsshanxi,henan,shaanxiandgansu4provinces.firstly,weuseppsmethodtogetthefirststagesamplingunit14countiesin7provinces.thenuserandomsamplemethodtogetvillageandhousehold.theyareoursample下载后可任意编辑distribution.5.empiricalresults6.conclusions【学术会议的发言稿开场白】二goodmorning,ladiesandgentleman.welcometoharbin,abeauti...