Revealing the Limits of the Source Coding ProblemsNo intellect, no information. The nature of information is digital and discrete. It is invisible, but we can depict it with mathematical science.Each student handles his/her individual research problem.Discussion with the peers is important tosolve it. We must develop partnership and friendship.MikihikoNishiaraCommunication,broadcast,andreadingandwritingonastoragecanberegardedasprocessesofdeliveringinformationfromsourcestodestinations.Inourlab,weformulatethemathematicalmodelsofvariousinformationsystemsandexplorethetheoreticallimitsofthetheirperformance.Forexample,theimplementationofastreamingsystemrequiresaninvestigationoftradeoffbetweenthebandwidthandthecompression.Althoughmanykindsofsuchproductsarealreadyavailableforusage,thetruthbehindthephenomenonisstillnotclear.Atthestartofdigital-broadcasting,emergencysignalsweresenttogetherwithimagedata.However,itturnsoutthatthecompressionprocessofimagedelaysanemergencysignal,andsotheyareprocessedseparatelynow.Byinvestigatingthetradeoffbetweentheprocessingandthedelay,wecanimprovethetransmissionoftheemergencysignals.Associate ProfessorHe is at the present post since 2007 after a research associate of the university of electro-communications. He is interested in information theory. Also has a career as a system engineer.Inourlab,youcandevelopyourprogrammingskillsbecauseyouwillusecomputersimulationsinyourresearch.Youwillalsoearnthetrustofyourcolleaguesasyoutraintoexpressyourunderstandingtoothers.In the FutureAfter GraduationElectrical& Computer EngineeringTetsujiHaeiwaSpintronicsisanemergingtechnologyasanewbranchofelectronics.Wearestudyinganddevelopingnano-sizedmagneticmaterialsforhigh-sensitivesensorandhigh-densitymemorywithspintronicstechnology.Inordertorealizesuchnano-sizedmagneticmaterials,Westudynewcompositematerialsmadeofmesoporousorderedthinfilmscontainingmagneticnanoparticles.Mesoporousthinfilmsareinorganicmaterialssynthesizedinthepresenceofsurfactantsastemplates,andhavevariousporousstructures.ThespintronicsdevicewillserveasaGreenITTechnologyproductbecauseofitsdistinctivelowpower-consumingcharacteristicwhilethecomputerisintherest-mode.InHaeiwalaboratory,wearestudyinganddevelopingthenano-sizedmagneticmaterialsforspintronicsdevices.Nano-sizedmagneticmaterialshaveapotentialtobetheultimatenon-volatilememorydevicewhichisspeedy,highlyreliable,andhasalargememory-capacity.Associate ProfessorPh.D.Hemet with the “magne”at the third-grade of college. Since then, he’sbeen studing and developing the magnetic material. Now, he‘sgoing also “Sato-yama” (natural woodlands) preservation activities.Scanning transmission electron microscope(STEM). Creations and Applications of NanosizeMagnetic Materials for the SpintronicsDevicesStem photo image of mesoporousthin film.Inordertodevelopmaterials,werepeattheprocessofsynthesizingmaterials,evaluatingthembasedonstructuralandcompositionalanalysis,microstructuralobservation,andelectricandmagneticmeasurement,andalteringthesyntheticconditionsaccordingtotheevaluation.Thisisagenuineengineertraining.Ourstudentsareworkingasengineerswithvacuum,measurement,andanalysis&observationtechnologyaftergraduation.20nmAfter GraduationIn the FutureElectrical& Computer Engineering29
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