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143 个结果
  • 简介:Scientificinnovationsystemisthebackboneandengineofeconomicdevelopmentandsocialprogressaswellasthefoundationandbackupofcomprehensivenationalstrengthsandinternationalcompetitiveness.Factorsdeterminingscientificinnovationcapacitymainlyincludetheformingofanenvironmentforinnovation,thecapitalsupplyforinnovation,innovationperformances,innovationdiffusivity,etc.Thepresentpaperismainlystudyingonthecapitalsupplyforforestryscientificinnovationandanalyzingthecapitalsupplycapacityforforestryscientificinnovationthroughtheformingofscientificinnovationcapital,theeffectivesupplyofscientificinnovationcapital,theoptimizationmechanismstopromotetheeffectivecapitalsupply,etc.

  • 标签: 林业 改革创新 最优化设计 科学改革
  • 简介:Onthebasisofconsideringdownlinkpowerfluxdensitylimit,shadowingeffectfrequencyreuseindifferentsystemsandadjoiningbeamsofsamesystem,adoptingvoiceactivityandpolarizationisolationtechniques,thecapacityofCDMAmobilesatellitecommunicationsystematdifferentdownlinkpowerfluxdensitylimitmodes,channelspreadbandwidthandmobileuser’squalityfactorofreceivingsystem(G/T)areanalysedandcalculated,andcomparedwiththeonesofTDMAandFDMA.Theconclusionsaregivenattheendofthispaper.

  • 标签: CDMA System capacity INTERFERENCE SATELLITE COMMUNICATION
  • 简介:能力获得和定价决定是一公司长期的战略决定。然而,多重产品的需求无常和substitutability引起困难解决能力和定价决定问题。在这份报纸,我们与需求无常和比赛探讨一个多重产品定价和多重资源能力获得问题。在要求前为每个资源和产品价格决定能力承诺的公司需要被认识到以便全部的利润被最大化。如果需求超过承诺的能力,额外的数量能从点市场被购买。费用被考虑的可变单位生产费用,能力获得和维护。我们首先分析一个单个公司基本问题并且在价格和能力上发现最佳的答案。基于单个公司模型,我们探讨越过产品并且越过公司价格比赛因素考虑的二产品的、二公司的能力承诺和定价问题。价格和能力承诺上的平衡的存在和唯一被证明,然后我们延长了结果到多重产品,多重公司大小写。

  • 标签: 替代产品 产品价格 竞争力 产能 决策问题 不确定性
  • 简介:倾倒区域能力被水动力学过程主要影响(潮汐的沉积,暴风雨巨浪和波浪,等等)象倾倒区域的尺寸和深度一样。在作为FVCOM(有限体积海岸和海洋模型)知道的三维的海洋发行量模型和随机的动态统计分析模型上基于,利用倾倒地面地形学进化并且倾倒数量,讨论水动力学过程和倾倒的活动的影响的作者目的以便造了倾倒区域能力的海洋的一个新模型。与在倾倒的区域的深度和倾倒的数量的数据,底部的变化地志它基于FVCOM水动力学和沉积模块在自然条件下面由潮汐的电流引起了,为倾倒分析变化的统计关系的作者努力总计,潮汐的电流和底部地志。通过到合适的修订系数值,它将被认为是地志的真实数据改变引用波浪和暴风雨影响的价值澎湃。因此在倾倒的能力作为长期的变化拿这评估。在建立底部的阀值的前提地志的变化,倾倒的区域能力被计算。每年拿Yangtze河口号码1作为一个例子倾倒区域,作为由0.5m的水深度还原剂,倾倒的区域能力是模型结果在对实际数量的合理同意的大约670万m3/a,。然后,模型在海湾倾倒区域,Shengsishangchuan山倾倒区域,Dongding倾倒区域,Dongshan倾倒区域,和Wenzhou移植倾倒区域的Luoyuan被验证,它在外面是拐弯结果类似于实际观察的。

  • 标签: 海洋倾倒区 评估模型 容量 水动力过程 统计分析模型 海底地形
  • 简介:Themethodhasbeenestablishedtocalculatetheenvironmentalcapacity(ECo),surplusenvironmentcapacity(SECo)ofwaterwithrespecttomarinepetroleumhydrocarbonsassociatedwithoil(PHAOs)andtheself-purificationcapacity(SPCo)ofmainself-purificationprocesstoPHAOsintheJiaozhouBay,China,accordingtothedynamicmodelfordistributionofmarinePHAOsamongmultiphaseenvironments.ThevariationofconcentrationofPHAOsintheJiaozhouBayiswellsimulatedbythedynamicmodel.Basedonthemodel,theEC.,SEC.ofwaterwithrespecttoPHAOsintheJiaozhouBaywerecalculatedduringthelast10yearsunderthefirst-classandsecond-classqualitystandardrequirement,accordingtoSPCoofmainself-purificationprocesstoPHAOs.Theresultsshowthatabout200tonsofPHAOscouldbedischargedintotheJiaozhouBayformaintainingthefirstclassseawaterqualitystandard,andabout600tonsofPHAOsforthesecondclassseawaterqualitystandardlater.

  • 标签: 海洋石油 环境容量 碳氢化合物 自然净化 分子运动 动力学模型
  • 简介:根据JCW(2007年8月9日),中国自称拥有5.4的一个全部的甲醇生产能力在2005的Mt/a和在2006的10Mt/a的一个全部的甲醇能力。与中国的快发展“s甲醇工业,包括存在单位的全部的甲醇能力,在建设中的单位和计划草根甲醇单位将到达60Mt/一旁边在2015的2010和70Mt/a。

  • 标签: 中国 甲醇容量 石化产品 储备战略
  • 简介:Basedontheretrospectionofresearchesoncarryingcapacity,thisarticlereviewedsystematicallytheresearchprogressesoncarryingcapacityofrelativeresources(CCRR).ThentheviewpointwasputforwardthatCCRRisnotanappropriatemethodofappraisingtheregionalsustainability,butasoundwaytoobtaincognitionforcoordinatingspatiallocationandflowofpopulationandeconomy.However,asthemostpopularcomputingmethodofCCRR,theWeightingLinearSumModelisdefectiveintherandomofweightchoiceandtheneglectofmatchingamongdifferentresources.Therefore,thisarticleestablishedtheGeometricModelonCCRRbasedonmodifyingWeightingLinearSumModel,whichcanbeusedtoappraiseregionswhereresourcesareclosematching.EmployingtheGeometricModel,thearticleempiricallyanalyzedthepopulationandeconomicCCRRinHubeiProvincefrom1978to2006.TheresultindicatesthatthepopulationinHubeiProvinceisoverloadingwhiletheeconomiccarryingcapacityisabundantcomparedtothewholecountry,andtheeconomicinsufficiencyrestrictsthepopulationcarryingcapacity.Inthefuture,HubeiProvincewillbecomeoneofthecoredevelopingzoneswhicharecharacterizedbyeconomicconglomeration.

  • 标签: 承载能力 线性模型 区域资源 区域可持续发展 流动人口 应用
  • 简介:Thepopulationcarryingcapacityofrestricteddistrict,keydevelopmentdistrict,optimizeddistrictappeargradientdecrease.Whiledifferentiationofsatisfactionregardingpopulationcapacityappearsinoptimizingdistrict,keydevelopmentdistrictsorrestricteddistricts,theunbalanceddistributionofpopulationbetweendistrictsorwithindistrictsemerges.Usingmulti-prongedmeasurestoreasonablycontrolpopulationsizeandguidethemovementofpopulationtothesuburbs,thisisarealisticpolicydirectionforBeijing,ShanghaiGuangzhouandShenzhenFirst-tiercities.Otheroptimizingdistrictsandkeydevelopmentdistrictsshouldraisetheirpopulationcarryingcapacity'sshortboard.RestricteddistrictshouldincreasetheirfinancialinputandimprovetheirImprovetheirlevelofpublicservice.

  • 标签: 人口承载力 功能区 人口承载能力 梯度下降 人口容量 人口分布
  • 简介:JellyfishfishingisaspecialtypeoffisherythatmainlyexistsinsomecountriesofEastandSoutheastAsia.Chinahasthelargestjellyfishfisheryyieldintheworldwithanannualharvestofaround300thousandtons.LiaodongBayisthemostimportantjellyfishfisherygroundinChina.However,duetothehighbenefitsofjellyfishfishery,whichleadstoillegalandout-of-seasonjellyfishfishingoccurringeachyearinLiaodongBay.IllegaljellyfishfisheryinLiaodongBayisatypicalexampleofthetragedyofthecommons.Thekeyproblemisthatfishermenseektoanillegallyinitiatejellyfishfishingasearlyaspossible.Inthispaper,basingonthedataofediblejellyfish’sbiologyandecology,wemainlyanalyzedthehistoryofjellyfishfisheryinChina,especiallyinLiaodongbay,andthenwecalculatedthecarrycapacityofediblejellyfishinLiaodongBaywhichisabout300thousandtonsoneyear.ThisnumberisequaltotherecentannualyieldofediblejellyfishinChina.Furthermore,basingonthecarrycapacityandreasonablequotaspriceanalysis,wesetupaJellyfishfishingquotasanddeficitquotasbuybacksystemwhichcouldbeasuitableandeffectivesolutionforjellyfishfisherymanagementanddevelopmentinLiaodongBayattheunderlyingroots.AlthoughChinaisthefirstcountrywithediblejellyfishaquaculture,theannualyieldofjellyfishaquacultureisonlyonefifthofjellyfishfishing.So,thereisaverybrightdevelopingprospectaboutediblejellyfishaquacultureinChina.

  • 标签: 渔业产量 辽东湾 水母 食用 承载力 捕捞配额
  • 简介:这篇论文为一个使能够的制造商处理能力分配问题能通过一条独立零售商隧道以及通过她的直接隧道散布她的产品到结束顾客。隧道的要求是substitutable,它导致在他们之间的竞争。我们显示那避免隧道竞争,制造商否认能力的零售商是可能的。明确地,如果隧道替换率高,低需求的一个零售商决不会被分配任何能力甚至当可得到的能力是宽大的时。当如果隧道替换率是低的,能力分配策略取决于零售商的需求时;可得到的能力。许多另外的有趣的经理的卓见被提供;与数字例子说明了。

  • 标签: 电子商务 供应链 容量分配 市场需求
  • 简介:Thispaperdiscussestheresultsoftestsontheshearcapacityofreinforcedconcretecolumnsstrengthenedwithcarbonfiberreinforcedplastic(CFRP)sheet.ThesheartransfermechanismofthespecimensreinforcedwithCFRPsheetwasstudied.ThefactorsaffectingtheshearcapacityofreinforcedconcretecolumnsstrengthenedwithCFRPsheetwereanalyzed.Severalsuggestionssuchasthenumberoflayers,widthandtensilestrengthoftheCFRPsheetareproposedforthisnewstrengtheningtechnique.Finally,asimpleandpracticaldesignmethodispresentedinthepaper.Thecalculatedresultsofthesuggestedmethodareshowntobeingoodagreementwiththetestresults.ThesuggesteddesignmethodcanbeusedinevaluatingtheshearcapacityofreinforcedconcretecolumnsstrengthenedwithCFRPsheet.

  • 标签: 增强型混凝土 碳纤维增强水泥 CFRP 剪切能力 应力分析
  • 简介:Alaboratory-basedaerobicincubationwasconductedtoinvestigatenitrogen(N)isotopicfractionationrelatedtonitrificationinfiveagriculturalsoilsafterapplicationofammoniumsulfate((NH4)2SO4).Thesoilsampleswerecollectedfromasubtropicalbarrenlandsoilderivedfromgranite(RGB),threesubtropicaluplandsoilsderivedfromgranite(RQU),Quaternaryredearth(RGU),QuaternaryXiashuloess(YQU)andatemperateuplandsoilgeneratedfromalluvialdeposit(FAU).Thefivesoilsvariedinnitrificationpotential,beingintheorderofFAU>YQU>RGU>RQU>RGB.SignificantNisotopicfractionationaccompaniednitrificationofNH+4.δ15NvaluesofNH+4increasedwithenhancednitrificationovertimeinthefouruplandsoilswithNH+4addition,whilethoseofNO-3decreasedconsistentlytotheminimumandthereafterincreased.δ15NvaluesofNH+4showedasignificantlynegativelinearrelationshipwithNH+4-Nconcentration,butapositivelinearrelationshipwithNO-3-Nconcentration.TheapparentisotopicfractionationfactorcalculatedbasedonthelossofNH+4was1.036forRQU,1.022forRGU,1.016forYQU,and1.020forFAU,respectively.Zero-andfirst-orderreactionkineticsseemedtohavetheirlimitationsindescribingthenitrificationprocessaffectedbyNH+4inputinthestudiedsoils.Incontrast,Nkineticisotopefractionationwascloselyrelatedtothenitrifyingactivity,andmightserveasanalternativetoolforestimatingthenitrificationcapacityofagriculturalsoils.

  • 标签: 同位素分馏 农业土壤 硝化能力 氨氮 一级反应动力学 第四纪红土
  • 简介:OrganicmodifierswereeffectivebothtoextendthemigrationtimewindowandtoimprovetheseparationofveryhydrophobiccompoundsinMEKC.Aniterationmethodwasusedtodeterminethemigrationtimeofmicelles.Thequantitativerelationshipbetweenthecapacityfactork’andtheconcentrationoforganicmodifierswasderived,whichwasinvestigatedexperimentally.Thelinearsolvationenergyrelationships(LSER)methodologywasappliedtoMEKC,andgoodlinearrelationshipsbetweenInk’andsolvatochromicparametersof15soluteswereobtainedinthepresenceoforganicmodifierindifferentconcentrations,whichindicatedanewaccessinMEKCtopredictk’fromthestructuralparametersofsolutes.TheeffectofcolumntemperatureTonk’wasalsoinvestigated.

  • 标签: MICELLAR ELECTROKINETIC CHROMATOGRAPHY organic MODIFIERS capacity
  • 简介:Inthisletter,capacityestimationforMobileAdhocNETworks(MANETs)usingdirec-tionalantennasarestudied.TwoMatrix-basedFastCalculationAlgorithms(MFCAs)areproposedtoestimatethenetworkcapacityinanetworkscenarioinwhichthereisnochannelsharingamongmultiplesessionsandtrafficissensitivetodelaywithanend-to-enddelayconstraint.Thefirstalgo-rithmMFCA-1isusedtoestimatenetworkcapacityinasituationwherealllinkshavethesamedelay.Itestimatesthemaximumnumberofk-hopsessionsinanetworkbasedonthek-hopadjacencymatrixofthenetwork.ThesecondalgorithmMFCA-2isusedtoestimatenetworkcapacityinasituationwheredifferentlinksmayhavedifferentdelays.Itcalculatesthemaximumnumberofsessionsinanetworkwithanend-to-enddelayconstraintbasedontheadjacencymatrixandthelink-delaymatrixofthenetwork.NumericalandsimulationresultsshowthatbothMFCA-1andMFCA-2cancalculatenetworkcapacitymuchfasterthanthewell-knownBrute-ForceSearchAlgorithm(BFSA)butwiththesameaccuracy.

  • 标签: 容量评估 定向天线 移动电话 计算方法
  • 简介:TryptophanresiduesofIgGRFfromrheumatoidarthritispatientweremodifiedwithN-Bromosuccinimide(NBS)andtheproductofmodificationwascharacterizedbyUV-spectrum,FluorescenceemissionspectrumandCD-spectrum.ThecorrespondingadsorptioncapacityofimmobilizedssDNAimmunoadsorbentforIgGRFwasenhancedfrom46%to86%,ThisresultindicatesthetryptophanresidueisessentialfortheinteractionbetweenssDN,AandIgGRF.andionic-bondingplaysanimportantroleinadsorption.

  • 标签: 色氨酸残余 免疫免疫球蛋白G 吸附能力 类风湿因子 风湿性关节炎
  • 简介:Theeffectofage-relatedbonelossonthestructuralcapacityoftheproximalfemurwereinvestigatedbyFiniteElementAnalysis(FEA).Fourbonelosspatternswereconsidered.Thesewere'uniformcorticalboneloss','neckcorticalboneloss','intertrochantericcorticalboneloss'and'uniformtrabecularboneloss'.Theresultsshowthatthetwo'non-uniformcorticalboneloss'patternsaremoredangerousthanthe'uniformcorticalboneloss'pattern,andthatthecorticalbonelossinintertrochantericregionisassociatedwithagreaterreductionincorticalfailureloadthanthecorticalbonelossinthefemoralneck.Thetrabecularbonelosscausesalimiteddecreaseinbothcorticalfailureandtrabecularfailureloads.Thisresearchshouldbehelpfultotheclinicalassessmentoffemurfractureriskduetoage-relatedboneloss.

  • 标签: PROXIMAL femur FEA Structural Capacity Age-related BONE LOSS