简介：Excitedstates^207Rnareinvestigatedviathe^196Pt(^16O,Sn)^207Rnreactionatbeamenergiesfrom85to95MeVusingtechniquesofin-beamγ-rayspectroscopy.Measurementsofγ-rayexcitationfunction,x-γandγ-γ-tconincidencesareperformedwithtenBGO(AC)HPGedetectors.Basedonthesemeasurements,alevelschemeof^207Rn,including17γ-raysand18levels,isestablished.SpinsformostofthelevelsareproposedaccordingtothemeasuredDCOratios.Thelevelstrucctureiscomparedwithaweak-couplingcalculationusingtheinteractionenergiesextractedfromneighbouringnuclei.

简介：OnJuly2,2002,BureauofInternationalExhibition’s(BIE)131stGeneralAssemblywasconvenedinParis.TheassemblyexaminedtheinvestigationreportbyBIEInvestigationDelegationforthoseapplicationcountries.Variousapplicationcountriesstatedreportsrespectively.TheChineseGovernmentDelegationheadedbyStateCouncilorWuYiattendedtheassembly,andstatedreportonChina’sShanghaimakingapplicationtohold2010WorldFair.

简介：Recently,theStateEnvironmentalProtectionAdministrationhaspublishedanamelistof46thermalpowerplantswhichhaven'tstarteddesulphurizationprojectsyetandrequirestheseplantstocompletetheirdesulphurizationprojectstotheappointedtimescheduleanddispatchedtheNoticeonStrengtheningSupervisionandManagementofKeyThermalPowerDesulphurizationProjectinthe10thPlanofControllingAcidRainandSO2PollutionintheTwoControlZones.

简介：Inthispaper,weintroducethecombiningstatedpreferenceandrevealedpreferencemethodswhichisthestate-ofthe-artmethodforthevaluationofnon-marketgoods.Revealedpreferencemethodsandstatedpreference(SP)methodshavebothbeenappliedbyeconomistsinvaluingnon-marketgoods;howeverbothmethodshaveinherentweaknesses.Inordertoexploitthestrengthsofthevariousapproacheswhileminimizingtheirweaknesses,combiningthetwomethodshasbecomeanimportantmethodologicaloption.Uptonow,agrowingnumberofliteraturesofstudyingcombingthetwotypesofdatahaveevolved,andresearchersdevelopedthreetypesofmodelstoestimatecombiningrevealedpreferenceandstatedpreferencedatainacademicfields:discretechoicemodel,continuouschoicemodelandmixedchoicemodel.Combiningstatedandrevealedpreferencemethodshavebeendevelopedfastespeciallyinthetransportstudyfieldinwhichideascouldalsobeleantforenvironmentaleconomicstudies.

简介：

简介：