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简介：Ｃｏｎｓｔｒｕｃｔｉｏｎ　Ｂｏｏｍｓ　ｉｎ　ＬｈａｓａＣｏｎｓｔｒｕｃｔｉｏｎＢｏｏｍｓｉｎＬｈａｓａ￥ＣＥＲＩＮＧＹＡＮＧｊＪＡＮＷｈｅｎＴｉｂｅｔｗａｓｐｅａｃｅｆｕｌｌｙｌｉｂｅｒａｔｅｄｉｎ１９５１，ｔｈｅｒｅｍｏｔｅｒｅｇｉｏｎｓｕｆｆｅｒ...

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简介：Thispaperdealswithmodelgenerationforequationaltheories,i.e.,automaticallygenerating(finite)modelsofagivensetof(logical)equations.Ourmethodoffinitemodelgenerationandatoolforautomaticconstructionoffinitealgebrasisdescribed.Someexamplesaregiventoshowtheapplicationsofourprogram.Wearguethat,thecombinationofmodelgeneratorsandtheoremproversenablesustogetabetterunderstandingoflogicaltheories.Abriefcomparisonbetwweenourtoolandothersimilartoolsisalsopresented.

简介：WestructureakindofrationalsplinesfarintroducingsomeofthePadeapproximenttechniquesintorationalsplines.Inthispaper,theresultsontheexistence,uniquenessandalgorithmoftherationalsplinearegivenandanumericalexampleisprovided.

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简介：我们在场多在间隔上构造决定分析的一个具体方法。方法概括科恩，Daubechies和小瓶的相应结果[Appl.Comput。泛音肛门，1(1993)，54-81]。由分操作符的使用，构造函数的表达式是更紧缩的。而且，方法更清楚地揭示一些性质多有某些近似顺序的决定分析。

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简介：<正>AssociatedwitheachfinitedirectedquiverQisaquasi-hereditaryalgebra.theso-calledtwisteddoubleofthepathalgebrakQ.Characteristictiltingmodulesoverthisclassofquasi-hereditaryalgebrasareconstructed.Theirendonorphismalgebrasareexplicitlydescribed.Itturnsoutthatthisclassofquasi-hereditaryalgebrasisclosedundertakingtheRingeldual.

简介：Incontrasttothemainstreamofstudyingthechaoticbehaviorofagivenmap,constructingchaoticmaphasattractedmuchlessattention.Inthispaper,weproposesimpleanalyticalmethodforconstructingone-dimensionalcontinuousmapswithcertainspecificperiodicpoints.Further,weobtainresultsfortheexistenceofchaoticphenomenoninthesenseofLiandYorke.Someexamplesarealsoanalyzedusingtheproposedmethods.

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简介：HL-2AisthefirsttokamakwithdivertorinChina.TheobjectivesofHL-2Aaretoproducemoreadaptabledivertorconfigurationstostudyenergyexhaustandimpuritycontrol,andtostudyenhancedcoreplasmaconfinementbyprofilecontrolandmoderateplasmashaping.HL-2Ahaswelloptimizedoperationalflexibilityandexcellentaccessi-bilityforthediagnosticsystemstofacilitatevariousplasmaexperiments.

简介：TheconstructionofPXunitsandPTAunitsacrossChinaisbeingacceleratedtofulfillthemarketdemandforparaxyleneandtoputanendtothesituationofdependenceonPXimports.

简介：RecentlythephenomenonofdisposableschoolbookinChinanotonlyhaswastedsomanyresourcesthatproduceunfavorableinfluence,butalsohasincreasedunnecessaryimpactburdensonconsumptionsofChinesefamilies.Thepaperanalyzesvalueofthereuseofschoolbooksandmainobstacles,introducestheconceptofservi-cizing,discussestheproblemofthereuseofschoolbooksfromconstructionofproduct-servicesystem,andputsfor-wardthatrealizationofthereuseofschoolbooksdependsoninnovationofpresentsystemandmodel.Constructionofschoolbook-servicesystemneedsshiftfromvaluetoconsumptionhabitsandbehaviors,andactiveparticipationofeverysocialclass.

简介：China’scoastallinestartsattheYaluRiverinLiaoninginthenorthandendsattheBeilunRivermouthinGuangxi.Itis18,000kilometreslongandcrosses11provinces,municipalitiesandautonomousregions,includingLiaoning,Hebei,Tianjin,Shandong,Jiangsu,Shanghai,Zhejiang,Fujian,Guangdong,GuangxiandHainan.In1988,theChinesegovernmentoutlinedtheCoastalProtectionForestSystemConstructionProjectanddefinedthecoastallineof11provincesasthemainconstructionline.Theprojectaimsatdevelopingamulti-functional

简介：我们在场为构造最大地局部性的Wannier的一个一般方法工作。它由三步组成：拣局部性的试用波浪功能的(i)，(ii)执行完整的乐队设计，并且(iii)有L的orthonormalizing?wdin方法。我们的方法能够没有进一步的最小化，生产最大地局部性的Wannier功能，并且没有使用supercells，它能正直地被用于随机的潜力。我们的方法的有效性为简单乐队和合成乐队被表明。

简介：Inrecentyears,alongwithcenteringonestablishmentofmarketeconomysystem,stressingtheimportanceofmacroeconomicmanagement,incessantexploitation,conservationandoptimizingutilizationofenergy,andincorporatingruralproductionandenvironmentalprotectionthroughtechnicalinnovation,ruralenergyconstructionhasgainedasignificantprogresswithremarkableeconomical,environmentalandsocialbenefit.

简介：Editor'sNote:Duringthecelebrationofthe50thanniversaryoftheQinghai-TibetandSichuan-TibetHighways,weinterviewedSongWangui,directoroftheTibetHighwayBureau,onroadconditionsofthetwohighwaysandthetransportsituationinTibet.

简介：It'slearnedfromSGCCAnnualWorkConferencethatSGCCwillinvest301.9billionyuaninpowergrids,forthefirsttimetoexceed300billioninrecentyears.Griddevelopmentwillenteranewstagewiththeconstructionandoperationofalargenumberoftransmissionprojects,newenergygenerationdeliveryprojectsandleadingtechnologydemonstrationprojects.Amongthem,UHVtransmissionprojectshavebrokenmanyworldrecords,andhavegreatlyacceleratedChina'ssmartgridconstruction.