简介：作者StevenL．Johnson是美国阿拉斯加大学辩论系的副教授。作为全美最大的辩论机构——美国议会制辩论联盟（NPDA，NationalParliamentaryDebateAssociation）的首任主席，Steven多年来活跃于世界大学生辩论赛舞台，并一直担任世界大学生辩论赛秘书长一职。他指导的队伍曾在各种国际比赛中多次获奖。自2005年以来，steven一直担任“外研社杯”全国英语辩论赛总裁判长。

简介：ＴｏｐｉｃｓｏｆＣｏｎｔｒａｃｅｐｔｉｖｅＲｅｓｅａｒｃｈＷｉｎｎｉｎｇＡｗａｒｄｓＳｐｏｎｓｏｒｅｄｂｙｔｈｅＳｔａｔｅＦａｍｉｌｙＰｌａｎｎｉｎｇＣｏｍｍｉｓｓｉｏｎ，１９９５Ｓｔｕｄｙｏｆｃｈａｎｇｅｓｏｆｃｏｎｔｒａｃｅｐｔｉｏｎｐｒａｃｔｉ...

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简介：ＡｓｃｅｎｄｉｎｇｔｏｔｈｅＴｈｒｏｎｅＡｆｔｅｒＷｉｎｎｉｎｇｔｈｅＨｏｒｓｅＲａｃｅ￥／／Ｔｈｅｇｒａｎｄｈｏｒｓｅｒａｃｅｗａｓａｂｏｕｔｔｏｂｅｇｉｎ，ａｎｄｔｈｅｂｅａｕｔｉｆｕｌＭａｌｕｎｇＧｒａｓｓｌａｎｄｗａｓａｂｕｚｚｗｉｔｈｍｅｒ...

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简介：Thedirectrollingprocessforhotstripproduction,wherethethinslabcasterisconnecteddirectlytothemill,hasgainedmarketsharerapidlybecauseofitsremarkableadvantagesintermsofenergysavingsandinvestmentcostovertheconventionalhotstripmills.However,theunquestionableadvantagesofthefirst-generationapplicationsofthisplantconceptalsoentailsignificantlimitationsbothinproductivityandsteelgradesthatcanbeproduced.Sincehisfirstpioneeringapplications,Danieliconsideredstrategicthedevelopmentofnewtechnicalsolutionsspecificallyconceivedtoovercometheselimitationswiththegoalofincreasingplantproductionvolumesandenlargingsteelgradeproductmix,inordertocoverthegapbetween'Conventionalmill'and'Thinslabcastingandrolling'processroutes.Inordertoreachthisgoal,DanielihasdevelopedacompleteportfolioofplantlayoutsadoptingThinSlabCastingandRollingtechnologies,eachofthemconceivedtoguaranteetheoptimalCAPEXandOPEXparametersinfittingwithmarketrequirementsourCustomerintendtotarget.intermsofproductivity,steelgradesandcoildimensionproductmix.DanieliTSR(ThinSlabRolling)fTSR(flexibleThinsSlabRolling)QSP(QualityStripProduction)andETR(ExtraThinRolling)plantconfigurationsareanalyzedinthispaper.Withthisdiversifiedapproach,Danielisolutionsaremostappropriateanswerstothinslabcastingandrollingtoproducehotrolledcoilswithsuperiorqualityandanextremelydiversifiedrangeofsteelgrades.Already,thisapproachhasallowedDanieliplantsto:①exceedthethresholdproductionof3.0Mt/awith2castingstrandsinoperationasdoneinTangshanIronandSteelplantinP.R.Chinasince2005;②expandtheproductmixtoincludevirtuallyallthesteelgradesusedforflatproductapplications,includingthemostdemandingones,suchasperitectic(inEssarAlgomaCanadaandBenxiIronandSteel,China),micro-alloyed,andsiliconsteels,forthemostsophisticatedapplications,