简介:为强子的激发QCD的模型预言让比夸克反夸克介子和原来的quark-parton的三夸克的baryons更复杂的结构当模特儿的异国情调的强子的一个分类。这些包括pentaquarkbaryons,六夸克的H-dibaryon,和tetraquark,混血儿和glueball介子。尽管有广泛的试验性的搜索,任何这些异国情调的配置的不含糊的候选人都没被识别。在另一方面,很多个介子说,似乎是一个质子反质子界限状态的,和包含任何一个charmed-anticharmed夸克的其它配对或bottom-antibottom夸克配对,最近被发现了那也不适合进夸克反夸克介子图画也不匹配启发QCD的exotics的期望的性质。这里,我简短为H-dibaryon从最近的搜索考察结果,并且讨论最新发现的状态的一些性质质子反质子状态和所谓的XYZ介子--并且为常规夸克反夸克介子和预言的QCD异国情调的状态把他们与期望作比较。
简介:TheconstructionofthenewurbandistrictisoneofthemainstrategiestoextendtheurbanspaceinChina.Inrecentyears,withtheperformanceofthenationalbalanceddevelopmentstrategyoftheregionaleconomics,theinter-administrativeregionalconstructionofthenewurbandistricthasbeenatendencyaimingtoremovetheadministrativedivisionbarrierandfacilitatetheregionaleconomicdevelopment.However,problemsalsoariseinthenewurbandistrictunderthebackgroundoftheinter-administrativeregionsuchasthepredicamentcausedbytheubiquitousregionaleconomiccooperationandcompetitionaswellasthepublicgovernance,thelackofthemanagementmainbodyqualificationandthemonotonousmeansofcoordination.ReferringtotheexperiencesoftheUSintheinter-administrativeregionadministrationinthemetropolitanarea,theauthoristoputforwardcountermeasuresandsuggestionsfromsuchtwoaspectsasthemanagementsystemandtheworkingmechanism.
简介:Thispaperpresentsanewclassofsurfacesthatgivetwoquitedifferentappearanceswhentheyareseenfromtwospecialviewpoints.Theinconsistentappearancescanbeperceivedbysimultaneouslyviewingthemdirectlyandinamirror.Thisphenomenonisanewtypeofopticalillusion,andwehavenameditthe"ambiguouscylinderillusion",becauseitistypicallygeneratedbycylindricalsurfaces.Weconsiderwhythisillusionarises,andwepresentamathematicalmethodfordesigningambiguouscylinders.
简介:Underthecomprehensivedeepeningreformandpromotingnewurbanization,Chinalaunchedanewroundofreformofhouseholdregistrationsystem.Reformhasamajorbreakthroughinfiveareas:toimplementnewurbanizationstrategyofhuman-centric,toachieveequalizationofbasicpublicservicesgradually,tobreakuplandrightsandruralmigrants,toprovideprotectionforfamilymigrants,andtoincreasefinancialsupportbygovernments.Butthereformstillfacesmanydifficulties,howtodeterminetheconditionssettledbycitysizeisdifficulttoimplementeffectively,financialtransferpaymentsystemreformisfacingenormousdifficulties,aswellasthesizeoftheurbanpopulationisdifficulttodetermineetc.
简介:<正>InJune2012,withtheapprovaloftheStateCouncil,theStateCouncilInformationOfficeissuedtheNationalHumanRightsActionPlan(2012-15)(the"ActionPlan"),thesecondnationalplanunderthesametheme.Inthepasttwoyears,undertheleadershipoftheCPCCentralCommitteeandGeneralSecretaryXiJinping,theActionPlan
简介:TheworksofMasterFuHaishuiisfullofpoeticandartisticimplication,likereadingthepoemsoftheancients.Theloftymountains,nimblewater,blurredcloud,boldandstrongpinetree,changingseasons,theetherealworld…allarefully'describedandwritten'byimageswithoutwordsincisivelyandvividly.Hisworksalwaysmovetheaudiencebyinterweaveofremoteness,flatness,