学科分类
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47 个结果
  • 简介:NagquhassuccessfullycommencedinvestmenttoitsmajorconstructionprojectsfromJanuarytoSeptemberof2004.AnofficialoftheLocalDevelopmentandReformCommissionremarks,thataccordingtotheirplan,theyshouldcomplete75new-startedandrestoredprojects,

  • 标签: 西藏 投资环境 固定资产投资 那曲地区
  • 简介:InJuly2005,thePeople'sBankofChinaof-ficiallyannouncedthatitwouldadoptaman-ageablefloatingexchangerate,adjustedac-cordingtoabasketofcurrenciesbasedonmarketsupplyanddemand.Onthatday,theexchangerateoftheRMBtotheU.S.Dollarincreasedby21percent,andsincethentheRMBexchangeratehasgraduallyturnedtoamoreflexibleex-changerateconvention,ratherthanfocusingon

  • 标签: 对外贸易 中国 人民币 汇率
  • 简介:Thedualrandommodelsaboutthelifeinsuranceandsocialpensioninsurancehavereceivedconsiderableattentionintherecentarticlesonactuarialtheoryandapplications.Thispaperdiscussesageneralkindofincreasingannuitybasedonitsforceofinterestaccumulationfunctionasageneralrandomprocess.Thedualrandommodelofthepresentvalueofthebenefitsoftheincreasingannuityhasbeenset,andtheirmomentshavebeencalculatedundercertainconditions.

  • 标签: 二重随机模型 社会养老金 保险精算 统计分析
  • 简介:一张标记的图是订的对(G,L)由图G和它的标记的L组成:V(G)鈫?{1,2,鈥?n},在此n=|V(G)|。在一张标记的图的一条增加的nonconsecutive路径(G,L)任何一个是一条路径(u1,u2,鈥?uk)(k鈮?2)在G以便L(ui)+为所有i=的2鈮?L(ui+1)1,2,鈥?k?1或顺序1的一条路径。增加nonconsecutive路径在的全部的数字(G,L)被d表示(G,L)。如果标记的L生产最大的d,标记的L是最佳的(G,L)。在这份报纸,在Zverovich(2004)的比那简单的一个方法被给获得路径的最佳的标记。象周期和星那样的另外的特殊的图的最佳的标记被获得。

  • 标签: 符号圈 符号星 递增路径数 符号图
  • 简介:TheASEANwouldbe'themaindestinationofChina'sgrowingoverseasinvestmentinfuture',theChinese-IndonesianbillionairesaidattheChina-ASEANExpoinNanning.ASEANmemberstateshaveinvestedatotalofUS$41.9billioninChinasincethecountrybeganitreformandopen-updriveinlate1978,accordingtostatisticsfromtheChineseMinistryofCommerce.

  • 标签: 东盟国家 中国 投资额 投资项目
  • 简介:AnewLDMOSTstructure,namedB-LDMOSTthathasaburiedlayerunderthedrainisproposed.Theburiedlayerisnotconnectedtothedriftregion,soitcanoptimizetheverticalfielddistributionandincreasebreakdownvoltage.TheanalysisandthesimulatedresultsshowthatB-LDMOSTcanincreasebreakdownvoltage,withalmostnegligibleinfluenceontheotherparameterssuchason-resistance,switchingtime,andsoon.

  • 标签: 埋层 击穿电压 接通电阻 转换时间 高压集成电路 B-LDMOST
  • 简介:Aneverincreasingnumberofcomputersystems-mainlyPCs-requireelaboratedmanagementstrategiesandtools.InthecontributiontoCHEP'01wewillpresentanddiscussnewconceptsanddevelopmentsconcerningdirectoryservicesandassetmanagement,Wewillinparticularreportonfirstexperienceswithsystemscurrentlybeingimplemented.

  • 标签: PC实验 软件开发 Linux-PCs LDAP 资产管理
  • 简介:该文运用图表等形式对近些年来华留学人员的情况进行了总结,发现其数量、地区分布等呈现逐年递增的趋势。通过分析得出,这一状况与我国学术氛围的增强、高等教育的发展进步,以及政府的大力支持有关。同时,通过数据的比较发现,在国际范围内,存在对我国高等教育发展的认识不均衡的现象,这对高校等相关部门提出了新的要求。

  • 标签: 国际教育 海外学生 高等教育 中国 原因
  • 简介:ObjectivesPlasmauricacid(UA)concentrationwassuspectedtoelevateinelderlywithischemiccardiomyopathy(ICM).MethodsWeanalyzedthedataof235elderlyaged60yearsandolderwithcoronaryheartdisease:silentmyocardialischemiaoranginapectorisconfirmedbyangiography.Amongthesepatients,154hadICMdefinedasleftventricularend-diastolicdiameter(LVDd)male>55mm,female>50mm(mean:63.51±7.70mm)measuredbyechocardiography.DifferenceinUAwasanalyzedbetweenpatientswithandwithoutICM.ResultsTherewassignificantincreaseofUAinICMcomparedwithnon-ICM(432.82±143.05umol/Lvs361.06±137.35umol/L,P<0.05);andUAwaspositivelyrelatedtoLVDd(r=0.25,P<0.05).ConclusionsTherewassignificantincreaseofUAinelderlywithICMduetolongtermsilentmyocardialischemiaandanginapectoris.Moreover,UAwaspositivelyrelatedtoLVDd.

  • 标签: 心肌缺血 老年人 酸浓度 心肌病 尿酸 ICM
  • 简介:CreativityandinnovationinEnglishlanguageteaching(ELT)arefrequentlydiscussedanddebated.RecentlytheMinistryofEducation(MOE)ofChinahasurgedthedevelopmentofasystem,whichen-hancescreativeabilityinstudentsatalllevels.Hawaii’sEast-WestCenterincollaborationwiththeOhanaFoundationimplementedaneducationalre-searchactivitydesignedtoassessthecurrentneedsandbestpracticesforEnglishlanguageteachingandlearn-ingatthemiddleschoollevelinChina.TheprojectfocusedonincreasingcreativityandinnovationinEnglishlanguageeducationandusedcasestudiesofsuccessfulEnglishlanguageteaching/learningastheunitofanalysis.ResearchersfrombothChinaandtheUnitedStateswereinvolvedwiththeanalysisandmaderec-ommendationsforimplementinginnovativeapproach-estoEnglishlanguageinstructionandonhowtoin-creasecreativityinteachertraining,curriculumde-velopment,andtheuseofappropriatetechnology.

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  • 简介:Theobjectofthispaperistostudythenon-tangentialincreasingpropertiesofpositiveharmonicfunctionuinLipschitzdomainbymeansofMartinrepresentationtheory,Anecessaryandsufficientconditionofthecontrolofgrowthofunearanyfixedboundarypointisobtained.Itisshownthatthenon-tangentialincreasingdegreeofunearaboundarypointisexactlythelocaldegreeofitsrepresentationmeasurewithrespecttotheharmonicmeasure.Someexanlplesaregiven.

  • 标签: 马丁边界 调和函数 调和测度 Lipschitz范围
  • 简介:Paraxylene(PX)是为纯对苯二酸酸(PTA)的制造的化工物品。与在中国的TPA的增加的消费,对PX的要求显著地增加并且超过了供应能力。Yangzi石油化学的公司,关于PX是乐观的出售,在低费用PX生产技术的追求一直在追踪全球先进芳香的生产技术并且采用了能增加PX产量的高效率的新奇吸附物。

  • 标签: 高效吸附剂 对位二甲苯 扬子石化公司 石化产品
  • 简介:Amulti-agentmodelispresentedtodiscussthemarketdynamicsandthesizedistributionoffirms.Themodelemphasizestheeffectsofincreasingreturnstoscaleandgivesthedescriptionofthebornanddeathofadaptiveproducers.Theevolutionofmarketstructureanditsbehaviorunderthetechnologicalshocksareinvestigated.Itsdynamicalresultsareingoodagreementwithsomeempirical"stylizedfacts"ofindustrialevolution.Withthediversityofdemandandadaptivegrowthstrategiesoffirms,thefirmsizeinthegeneralizedmodelobeysthepower-lawdistribution.Threefactorsmainlydeterminethecompetitivedynamicsandtheskewedsizedistributionsoffirms:1.Self-reinforcingmechanism;2.Adaptivefirmgrowingstrategies;3.Demanddiversityorwidespreadheterogeneityinthetechnologicalcapabilitiesoffirms.

  • 标签: INCREASING returns INDUSTRY dynamics SIZE distribution
  • 简介:ThisworkisaimedtorigorouslymanagevoltagesaturationandmaximumcurrentconstraintsinShuntActiveFilters.Inthisrespect,assuming'unconstrained'controlalgorithmshavealreadybeendefinedtoachievestandardobjectivesforsuchdevices(i.e.currenttrackingforharmoniccompensationandDC-busvoltageboundness),aplug-inunit,orientedtoextendthesystemoperatingregionandatthesametimepreservinggoodperformanceunderlargetransientsandoverloadconditions,ispresented.Thissolutionallowstoimproveavailability,robustnessandcomposabilityofShuntActiveFilters,whichareexpectedtobekeyfeaturesinpresentandnextgenerationcomplexandpossibly'smart'powergrids.Theproposedunitiscomposedbytwoparts.First,asuitableanti-windupstrategyisdefinedinordertodealwithcontrolinputsaturation.Itsmainpurposeistopreservetheoriginal'unconstrainederrordynamics',infaceofinputsaturation,whileguaranteeinglowcomputationalburdenandreducedperformanceimpairment(thelattergoal,inharmoniccompensationcontext,leadstorathernon-standardproblemformulation).Tothisaim,theanti-windupactsonthecurrentreferencesthroughasuitably-designedadditionaldynamics.Then,inordertocopewithcurrentlimitations,anadditionalstrategyhasbeendesigned;againthecurrentreferencesissuitablyshapedtocomplywiththefeaturesandboundsofthesystem,augmentedwiththeabove-mentionedanti-windupsolution.TheproposedschemecanbesimplyjoinedtoanykindofunconstrainedcontrolleradoptedtosteerShuntActiveFilters.Inthiswork,anInternal-Model-basedcurrentcontrollerisadoptedasabenchmarkcase.Theproposedapproachisvalidatethroughextensivesimulationtests.

  • 标签: SHUNT ACTIVE FILTERS power quality ANTI-WINDUP
  • 简介:1.IntroductionForanyonepayingattention,thisisadisruptivetimeinscienceingeneralandinhealthpromotionscienceinparticular.Obesityisthemostprevalentnutrition-relatedhealthproblemaroundtheglobe.Theissueofwhether,asiscommonlythought,obesityiscausativeofearlymortalityorwhetheritisonlyamarkerofriskhasbeenraised.Thelackofsubstantialandmaintainedchangeinchildobesitypreventionhasbeenrecognized,andnumerouslimitationsinourconceptualandmethodologicalapproachtoobesitypreventionhavebeenidentified.

  • 标签: INCREASING PHYSICAL INTRODUCTION paying ATTENTION
  • 简介:Slowlight,atechnologytocontroltheopticalsignalbyreducingthegroupvelocity,hasbeenwidelystudiedtoobtainenhancednonlinearitiesandincreasedphaseshiftsowingtoitspromotingofthelight–matterinteractionability.Inthiswork,awidebandslowlightisachievedinasimpleone-dimensionalfishbonegratingwaveguide.Aflatbandindicatingslowlightwithagroupindexof13andbandwidthover10nmisobtainedbytheplanewaveexpansioncalculation,andthecorrespondingexperimentalresultsagreewellwiththetheoreticalprediction.Asteptaperisdesignedtocompensatethecouplingloss.Theproposedfishbonegratingwaveguideisagoodcandidateforwidebandslowlightdevicesinlightcommunication.

  • 标签: BANDWIDTH SLOW fishbone-like