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14AnalysisandDesignofFeedbackControlSysytems The Dirac Delta Function and Convolution 1 The Dirac Delta Impulse Function The Dirac delta function is a nonphysical singularity function with the following de64257nition 0for 0 unde64257ned at 0 1 but w. 14AnalysisandDesignofFeedbackControlSystems Understanding Poles and Zeros 1 System Poles and Zeros The transfer function provides a basis for determining important system response characteristics without solving the complete di64256erential equation Cassell Brett A Cruden Quoc Ngo Jun Li CenterforNanotechnology NASAAmesResearchCenter MoffettFieldCA94035 Thermal Contact Resistance and Thermal Conductivity of a Carbon Nano64257ber We have measured the thermal resistance of a 152 nmdiameter carbon Erturk CenterforIntelligentMaterialSystems andStructures DepartmentofMechanicalEngineering andDepartmentofEngineeringScience andMechanics VirginiaTech BlacksburgVA24061 email erturkvtedu D J Inman Centerfor Laibson,D.(1994).EssaysinHyperbolicDiscounting.PhDthesis,MassachusettsInstituteofTechnology.Loewenstein,G.andO'Donoghue,T.(2005).Animalspirits:Aectiveanddeliberativeprocessesineconomicbehavior.Workin DaronAcemogluisProfessorofEconomics,MassachusettsInstituteofTechnology,E52-371,CambridgeMA02319 Notice,however,thatinadynamicworldtheexpectationoffuturelump-sumtransfersalsomakesfarmingamoreattractive Bourouiba1,2,†,Eline Dehandschoewercker3andJohnW.M. Bush11DepartmentofMathematics,MassachusettsInstituteofTechnology,Cambridge,MA02130,USA2DepartmentofCivilandEnvironmentalEngineering,Massachuset RevisionreceivedMay2003.DepartmentofMechanicalEngineering,NewJerseyInstituteofTechnology,Newark,NJ (DfDS)analysisistopromotedesignfeaturesandattributes,whichreducethesub-sequentdisassemblycosts.Whilet AddresscorrespondencetoMichelleR.GreeneorAudeOliva,De-partmentofBrainandCognitiveSciences,MassachusettsInstituteofTechnology,77MassachusettsAve.,46-4078,Cambridge,MA02139,e-mail:mrgreene@mit.eduoroliv AssistantProfessor,DepartmentofMathematics,UniversityofCalifornia,Berkeley,BerkeleyCA94720-3840.E-mail:persson@berkeley.edu.AIAAMember.yAssistantProfessor,DepartmentofMechanicalEngineering,University AssistantProfessor,DepartmentofPoliticalScience,MassachusettsInstituteofTechnology.yAssistantProfessor,DepartmentofPoliticalScience,UniversityofChicago. 1IntroductionThe20yearssincethecrestingofdemoc EuropeanEconomicReview44(2000)683Inequality,GrowthandDevelopmentDemocratizationorrepression?DaronAcemoglu,JamesA.RobinsonDepartmentofEconomics,MassachusettsInstituteofTechnology,50MemorialDriCambridge Shapetransitionofunstrainedflattestsingle-walledcarbonnanotubesunderWeihuaMu,JianshuCao,andZhong-canOu-YangDepartmentofChemistry,MassachusettsInstituteofTechnology,Cambridge,Massachusetts02139,USAStat Correspondingauthorat:DepartmentofBrainandCognitiveSciences,46-4021,MassachusettsInstituteofTechnology,43VassarStreet,Cambridge,MA02139,UnitedStates.E-mailaddress:(L.Young).Theseauthorscontributedequa FRITAMUFF:ACOMPREHENSIVEPLATFORMFORPREDICTIONOFUN-MUFFLEDANDMUFFLEDEXHAUSTNOISEOFICENGINESM.L.Munjal,S.N.Panigrahi,R.N.HotaFacilityforResearchinTechnicalAcoustics,DepartmentofMechanicalEngineering,Ind