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2016年F题难民移民政策建模O奖论文1
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微信扫码,听美赛特等奖分享如何获得 O 奖Our team was tasked with modeling refugee immigration polic
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2016 年美赛 F 题特等奖论文
Anna Hattle , Katherine Yang , Sicheng Zeng
斯坦福大学 Stanford University
本论文由超级数学建模与美赛特等奖获得者倾情提供
关注超级数学建模,获取更多数模资料
2016 年美赛 F 题"难民移民政策建模"是一道涉及难民移民的典型政策问题. 本次直播由来
自 Stanford University 的特等奖获奖者来介绍分析该问题, 并从建模,编程,写作三方面精
析他们的获奖论文"Modeling Refugee Immigration Policies"。
让我们来看看来自大洋彼岸的同学是怎么思考数模问题,敬请期待!
微信扫码,听美赛特等奖分享如何获得 O 奖
Team#52854 Page1of33
OurteamwastaskedwithmodelingrefugeeimmigrationpoliciesinlightofthecurrentEuropean
refugeecrisis.Wedevelopedametrictodeterminethecapabilityofacountrytohostrefugeesby
assessingeconomicandphysicalinformationaboutacountryrelativetootherhostcountries,resultingin
aproportionthattranslatestoanumberofrefugeesbeinghosted,orcapacity.
WeanalyzedtheflowofSyrianrefugeestoandthroughEuropeusingagentbasedmodeling.We
studiedresourcedistributionamongstcertaincountrieswhentheircapacitiesweredesignatedusingour
metric,implementedsystemdynamicsandconsideredseveralcountries’attitudestowardshostingof
refugeesaswellconsideredtheinclusionofother,nonEuropeancountriesashostsforSyrianrefugees.
Ourmodelalsosupportstestingofsuddeninfluxesofrefugees,additionofothercountriesoutside
Europe,idealcomparedtorealisticsupportfromcertaincountries,andtheeffectsofcontagiousdisease
onthesystem.Themodelisalsoscalable,andcanhandlelargenumbersofrefugees.Notonlydidour
modelreflectrealisticandinterestingresultswhendifferentfactorswereconsidered,butitalsoprovided
informationusefulinpolicyplanning.Usingtheagentbasedmodel,wedeterminedafairdistributionof
resourcesandoptimizationofrefugeeflowthatacceptsover93%ofthetotalrefugeesover91%ofthe
timewith95%confidence.
Wealsodevelopedaseparatedeterministicratebasedmodelthatconsidersadditionalexogenous
eventsandexploredtheeffectsofendogenousandexogenouseventsusingsystemdynamics.Thismodel
incorporatesstockandflowstructureandfeedbackloopsinaratebasedsimulation.Usingthissystem
dynamicmodel,westudiedthebalanceofendogenoussetbackswithbothnegativeandpositive
exogenousevents,suchasanegativeantiimmigrationbombthreatorapositivepieceofviralmedia.
ThesefactorswereconsideredanddirectlyaffectedtheratesofrefugeeentryintoEurope,representedin
aquantitativemodeloftheeffectsofreallifequalitativeconditions.Westudiedthedelayingeffectsofan
endogenousissue,suchasanissuewithEurodac,thefingerprintingidentificationsystemusedwhen
processingasylumapplication,andfoundthatpositiveexogenouseventsofcertainmagnitudescould
counterthesedelayingeffects.Withcertainquantitativevaluesofpositiveexogenousfactors,wewere
abletoreturntheoverallsimulationtohave95%of1millionrefugeesbeacceptedtoEuropewhenan
endogenousdelaywascontinuouslyaffectingtheprocess.
Byincorporatingknownnumericalvaluesaboutrefugeemovementintobothstochastic
agentbasedmodelingandratebaseddeterministicmodeling,weshedlightonthemostinfluentialfactors
inrefugeemigrationanddevelopedapolicytofairlysettleonemillionSyrianrefugeesinsafehaven
countries.
Team#52854 Page2of33
LettertotheUnitedNations
DearUNRepresentative,
We,theICMRUN(RefUgeeaNalytics)team,weretaskedwithhelpingtheUNdevelopabetter
understandingofthefactorsinvolvedwithfacilitatingthemovementofrefugeesfromthecountriesof
originintosafehavencountries.Throughthecreationofametrictodeterminecountries’capacitiesto
hostrefugees,andtheprogramminganddevelopmentoftwomathematicalmodelsandtheirtestingand
analysis,wehavecreatedaplanwhichwillallowfornearoptimaldistributionofonemillionrefugees
throughoutEurope.
Inordertoachieveourprimarygoaloffacilitatingrefugeeresettlement,weanalyzedtheabilities
ofcountrieswithinEuropeaswellasTurkeytohandletheflowofincomingrefugees.Fromour
calculationswedeterminedmaximumcapacitiesfordifferenthostingcountries,andfoundthatthebulkof
resourcessuchasfood,water,andimmediatemedicalcarewillbemosteffectiveifprepositionedin
Turkey,France,Germany,andItaly.Furthermore,refugeefamiliesshouldneverhavetobeseparated,and
sowecreatedflexibilityinourcapacitydeterminationsthatwillallowfamilymemberstostaytogether.
Accordingtoourplan,dedicatingsmallportionsofthebudgettocausesotherthanproviding
resourcesforimmediateneedswillalsobebeneficialfortherefugees.Werecommendthatprojects
designedtomakeescaperoutesforrefugeessafeandnotlifethreatening,suchasItaly’sMareNostrum
plan,bereimplementedsothatthedauntingjourneysrefugeescurrentlyundertakewillnotbeso
dangerous.
Anemergencyfundshouldbededicatedtocreatingpositivemediaattentionthatwillcounteract
thepotentialeffectsofnegativeevents(suchasaterroristattack)onpublicopinion.Thiscouldfacilitate
viralcampaignsorpromotionaladvertisementencouragingpeopletovolunteerorotherwiseassuringthe
Europeanpublicthathostingrefugeesisnotadangerousrisk.Increasingpublicawarenessandsympathy
fortherefugeecausewillincreasethesupportforthisplan,andwillhopefullyencouragetheparticipation
ofothercountries.DespitethedistanceofcountriessuchasChinaandtheUSfromSyria,theareaof
concern,thecapacityofsuchcountriestomaketheprocessmoreefficientisinvaluable.Asidefrom
actingashostcountries,bothownresourcesandhavemanypotentiallywillingvolunteersandsupporters.
Whilethereisanincreaseincostassociatedwithtransportingrefugeestothesetwocountriesoveralong
distance,ourmodelindicatedthattherewouldbeamorethan12%decreaseincostofprepositioned
resourcesif10%ofrefugeesweredirectedtoberesettledbetweenChinaandtheUS.
Notonlydoesourplanseektosavemillionsoflivesofrefugees,itisalsobeneficialtothe
originalinhabitantsofhostingcountries.Muchoftheburdenthatfallsonsafehavencountriesiscaused
byillegalimmigration,whichrefugeeshaveoftenresortedtowhenacountrydoesnotprovideresources
fortheirsurvival.Properlydistributingresourcesandimprovingtheregistrationprocesswillmeanthat
refugeeswillbeabletomorequicklyintegrateintosociety,precludingattemptstoillegallycrossborders.
Wehopeyouwilladoptourpolicyrecommendationstomaximizethesafetyandmovement
efficiencyoftherefugeesfleeingfromviolencewhilebeingfairtohostingsafehavencountries.
Sincerely,
ICMRUN
Team#52854 Page3of33
2016ICMProblemF:ModelingRefugeeImmigrationPolicies
“ICMRUNtoSafeCountries”
Introduction
“"Tosay'yeah,youknowwehaverefugeesalloverinEuropebuttheyallwanttogotoGermanyand
thereforewearenotconcerned'iseffective,butwrong.
AndthereforeIthinkweneedafairandjust
distribution
."
MartinSchulz,EuropeanParliamentPresident,quotedfromaBBCArticle
"Theywillcometheproblemishowareyougoingtodealwiththeissue?...
Imean,it'sjustlikea
mathematicalformula,what'sgoingoninSyria
.”
OrcunUlusoy,UniversityofAmsterdam,researcherofhumanrightsandmigrantborder
relations,quotedfromNPR
RecentconflictintheMiddleEasthascausedanincreaseofmigrationtoEurope.Refugeestravel
toEuropeovermultiplewaterroutes,withafewroutesexperiencingheavytraffic,namelytheWest,
Central,andEasternMediterranean[3].Traveloverthesebodiesofwaterandcrossinginternational
borderscontainsriskforrefugees,butanestimatedonemillionrefugeesenteredEurope2015toescape
violenceorthreatofdeathelsewhere[3].Inaccommodatingtheserefugees,Europeancountrieshave
establishedaquotasystemtodealwiththeover715,000asylumapplicants;however,onlyasmall
percentageofrequestsaregrantedandmanyrefugeesthatarelegitimatelyfleeinglifethreateningconflict
situationsaredelayedinresettlingtoasafehavencountryordeniedasylumentirely.Inthepast,
burdeningofcountrieshasvariedinthequotasystemsusedforsmallscaledistributionsofrefugees
alreadypresentinEuropeancountries.Thosewhoareburdenedthemostworryabouttheirabilitytohost
thehighnumberofrefugeesassignedtothemandwishforthemovementandresettlementofrefugeesto
befairer.
RestatementoftheProblem
TherecentincreaseinSyrianrefugeesenteringEuropeinvolvesmanydifferentfactorsandsystem
components.Usingknowninformationaboutroutes,asylumdata,approximateddataandothernumerical
informationcollectedbytheUnitedNationsHighCommissionerforRefugees(UNHCR)aswellasother
groupsassistingrefugees,modeltheflowofrefugeestoandthroughsafehavencountries.Additionally,
explorethedynamicsofyourmodelandconsiderfactorsthataffectrefugeebehavior,thecooperation
responseandabilitiesofcountries,exogenousandendogenousevents,scalability,aswellasdifferent
complicationsandnonidealaspectsoftherefugeesituation.Basedonthismodelandotherrelevant
information,developapolicyinsupportoftherefugeemodeloutliningconditionsthatwouldensure
optimalmigrationpattern.Theobjectiveistousemathematicalmodelingtocreateapolicyplanthatwill
providefortheresettlementofrefugeesandspreadtheburdenasfairlyaspossiblebetweenhosting
safehavencountries.
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