简介：China’srareearthindustryencoun-teredsomedefficultiesin1989afterkeepinguparapiddevelopmentinpro-ductionandmarketingathomeandabroadComparedwith1988,themineralproductoutputdecreasedslightly,buttheyieldofprocessedproductsandsalesvolumestillincreasedsomewhat.Thoughtheannualoutputofmineralproductsin1989was25220tonsREO,15%downfrom1988(29640tonsREO),yetitisstillthelargestproducerinthe

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简介：ＮｏＩｍｐａｓｅｆｏｒＣｈｉｎａ’ｓＤｅｖｅｌｏｐｍｅｎｔＪｉａｎＳｏｎｇＴｏｄａｙ，Ｃｈｉｎａｈａｓａｍｏｒｅｔｈａｎ１．２ｂｉｌｉｏｎｐｅｏｐｌｅ，ａｂｏｕｔ２２％ｏｆｔｈｅｗｏｒｌｄ’ｓｔｏｔａｌ，ｗｈｏａｒｅｆｅｄｗｉｔｈｔｈｅｇｒａｉｎｐｒ...

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简介：这篇论文的主要目的是在中国给出历史和nanophotonics研究的当前的地位的简短概述，并且在中国nanophotonics社区做的过去的年里加亮一些研究结果。我将简短首先介绍nanophotonics的原则，几个它的学生惩罚包括photonic晶体，plasmonics和metamaterials，和相关人工的声学的结构。然后，我将加亮中国研究组在这些区域取得，选择基于我的个人味道仅仅做了的一些主要进步。目的是让研究人员更好在nanophotonics和相关区域的中国社区知道并且欣赏的这些结果，并且在不同区域提供研究人员的更好的机会有更多的通讯。我也希望这简短介绍将帮助做一座更好的桥在世界上与更宽广的社区连接中国nanophotonics社区。

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简介：TheauthorsofthisarticlebelievethattheG20shouldplaya'leading'roleinglobalgovernance.TheG20shouldmakethedecisions,whiletheIMF,theWorldBankandtheWTOshouldcarrythemout.TheinstitutionalizationoftheG20isinChina’snationalinterests.ChinashouldpayparticularattentiontoagendasettingintheG20,andespeciallypromote'tradeliberalization'and'development'.更多还原

简介：Inessence,twoepoch-makingeventsarereshapingtheworldordertoday:thecollapseoftheoldSovietblocandtheriseofAsia-Pacific,ofwhichChina’seco-nomictakeoffconstitutesanimportantpart.WhiletheformerbroughtanendtotheEast-WestColdWar,thelatterismakingtremendouscontributionstowards

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简介：Fromthebeginningof2014,theinternationalorderhasundergonesomequitedramaticchangesinseveralpartsoftheworld.TheUkrainianpoliticalcrisishasgraduallyevolvedintoaU.S.-RussiaconfrontationtwodecadesaftertheendoftheColdWar.IntheMiddleEast,theextremistgroup,theIslamicStateofIraqandAlSham(ISIS)invadedIraq,gaining

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简介：Thedemographicstructureofpopulations,particularlyageandsex,hasprofoundconsequencesforharmoniousandsustainablesocialandeconomicdevelopment.Furthermore,analyzingsexratiosofpopulationsisimportantinanalyzingthedevelopmentofthestatusOfwomenandgirls.

简介：TheSchoolofEconomicsandManagementatTsinghuaUniversity(TsinghuaSEM)invitesapplicationsforfacultypositionsatalllevels(AssistantProfessor,AssociateProfessorandFullProfessor)inanyfieldsofbusinessadministrationandmanagement.TsinghuaSEMistheonlyschoolinmainlandChinaaccreditedbybothAACSBandEQUIS.TheSchooloffersundergraduate,

简介：TheoriginofChinesesealsremainsobscureinmodernresearch.Mostpublications,influencedbythetraditionalpointofview,havedealtwiththesealshandeddownfromtheEasternZhou(771-256B.C.).Onlyafewstudieshavediscussedsealsfromtheirearliest-andstillneglected-history.Therehaveevenbeensomesuggestions,basedontheideaofusingasealandusingitonclayfirstdevelopedinMesopotamia,thatthesealwasintroducedtoChinafromtheNearEast.ThisproposedforeignoriginmakesthehistoryofChinesesealsmorecomplicated.