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ID:35525076
大小:66.60 KB
页数:5页
时间:2019-03-25
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1、2013ContestProblemsMCMPROBLEMSPROBLEMA:TheUltimateBrowniePanWhenbakinginarectangularpanheatisconcentratedinthe4comersandtheproductgetsovercookedatthecorners(andtoalesserextentattheedges).Inaroundpantheheatisdistributedevenlyovertheentireouteredgeandtheproductisnotovercookedattheed
2、ges・However,sincemostovensarerectangularinshapeusingroundpansisnotefficientwithrespecttousingthespaceinanoven.当在一个矩形的锅热烘烤时,热量集中在烤箱的4个角落中,在角落处的食物就会过度烹饪(在某种程度上边缘也是这样)。圆形平底锅热量平均分配在整个外缘,在边上的食物不会过度烹饪。然而,由于大部分烤箱都是方形,考虑到烤箱空间的使用,形锅不会有效的利用烤箱的空间。Developamodeltoshowthedistributionofheatacros
3、stheouteredgeofapanforpansofdifferentshapes-rectangulartocircularandothershapesinbetween.建立一个模型来说明不同形状的锅(圆形方形或其他形状)的外边缘热量的不同分布。Assume1.AwidthtolengthratioofW/Lfortheovenwhichisrectangularinshape.2.EachpanmusthaveanareaofA.3.Initiallytworacksintheoven,evenlyspaced・假设1.矩形烤箱的的宽度与长度之比
4、是W/L。2.每个盘子的面积都是A。3・最初,两个机架在烤箱,间隔均匀。Developamodelthatcanbeusedtoselectthebesttypeofpan(shape)underthefollowingconditions:1.Maximizenumberofpansthatcanfitintheoven(N)1.Maximizeevendistributionofheat(H)forthepan2.Optimizeacombinationofconditions(1)and(2)whereweightspand(1-p)areassig
5、nedtoillustratehowtheresultsvarywithdifferentvaluesofWZLandp.建立一个模型,可用于选择最佳的盘子(形状)在下列情况下:1.可以放到烤箱中的锅的最大数量是(N)、2.盘子里最大限度地均匀分布热量为(H),3・优化的组合的条件(1)与(2)式中的权重p与(1-p),用来说明如何随不同的值的W/L与P的变化而影响最终结果。InadditiontoyourMCMformattedsolution,prepareaonetotwopageadvertisingsheetforthenewBrownieGou
6、rmetMagazinehighlightingyourdesignandresults・除了你的罗马数字格式化的解决方案,准备一个一-到两页的广告板为新布朗尼美食杂志突出自己的设计与结果。PROBLEMB:Water,Water,EverywhereFreshwateristhelimitingconstraintfordevelopmentinmuchoftheworld.Buildamathematicalmodelfordetermininganeffective,feasible,andcost-efficientwaterstrategyfor
7、2013tomeettheprojectedwaterneedsof[pickonecountryfromthelistbelow]in2025,andidentifythebestwaterstrategy.Inparticular,yourmathematicalmodelmustaddressstorageandmovement;de-salinization;andconservation.Ifpossible,useyourmodeltodiscusstheeconomic,physical,andenvironmentalimplication
8、sofyourstrategy.Provideanon-techn
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