简介：TheChinesemodelhasafairlybiginfluenceinAfrica.Eversincereformandopening-up,Chinahasbeenfocusingonthecentraltaskofeconomicconstruction,whichbroughtrapideconomicgrowth,strengtheningcomprehensivenationalpower,improvinglivesofthepeopleandextendinginternationalinfluence.ThesuccessoftheChinesemodelhasarousedmuchinterestintheworld,especiallyAfrica,andproducedpositiveeffects.Itistheoutcomeofacombinationofseveralfactors,suchastheattractionofChina'sdevelopment.theimpetusproducedbythatdevelopmentandtheappealofChina'sfriendlypolicies.Nevertheless,ChinaisnotgoingtosellitsmodelandultimatelyAfricahastocarveoutitsownwayofdevelopment.

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简介：Reliablequantitativeestimationofbedaggradationordegradationisimportantforriver-trainingandwatermanagementprojects.Withthedevelopmentofwaterresources,sedimentproblemsassociatedwithadamarebecomingmoresevere.Thispaperdescribessomespecialproblemsinmathematicalmodelforcalculationofdegradationandaggradationinareservoir.Themaineffortsofthisstudyareonthetreatmentofsomephysicalprocessesoffinesedimenttransport(＜0.05mm).Problemsinareservoirareobviouslydifferentfromanaturalstream,suchastheturbidcurrentflow,orificesedimentflushing;andtheinitiationandconsolidationofcohesivesedimentdeposition.ThecaseofLiujiaxiaReservoir,whichislocatedintheupperreachesoftheYellowRiver,isemployedtoverifythemodel.Theresultsshowthatthemodelisapplicableintheevaluationofanengineeringplaningwithplentyoffinesedimentmovement.

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简介：Thispaperpresentsasemiparametricadjustmentmethodsuitableforgeneralcases.Assumingthattheregularizermatrixispositivedefinite,thecalculationmethodisdiscussedandthecorrespondingformulaearepresented.Finally,asimulatedadjustmentproblemisconstructedtoexplainthemethodgiveninthispaper,TheresultsfromthesemiparametricmodelandG-Mmodelarecompared.Theresultsdemonstratethatthemodelerrorsorthesystematicerrorsoftheobservationscanbedetectedcorrectlywiththesemiparametricestimatemethod.

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简介：ByusingthesimulationresultsofanAGCM,whichhadbeenrunfrom1945to1993forcedbyCOADSSST,theinterdecadalvariabilityofthemodelatmospherewasinvestigatedandcomparedwiththatofNCEPreanalysisdata.Itwasfoundthat,interdecadalvariabilityexistssignificantlyinboththetropicalPacificwindfieldsandthemid-highlatitudeatmosphericcirculationofthemodelatmosphere.Thetendencyoftimevariationandspatialdistributionsoftheinterdecadalvariabilityofthemodelatmospherearebasicallyconsistentwithobservation.Relativetothemid-highlatitudeatmosphericcirculation,thesimulationoftropicalPacificwindismoresatisfying,whichsuggeststhatanomalousvariationofSSTisstillthemainfactorfortheinterdecadalvariabilityoftropicalPacificwind.Itmighthavemoresignificantinfluenceonthetropicalwindthanonthemid-highlatitudeatmosphere.However,thereisstillobviousdifferencebetweenthesimulationandobservation.Theycouldbeattributedtoboththesimulationcapabilityofthemodelandabsenceofotherfactorsinthemodelwhichareimportantfortheinterdecadalclimatevariation.

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简介：这篇论文起初构造冈瑟生成器的概率模型，；产量顺序的有限尺寸联合分发被介绍。结果证明产量顺序是一个独立人士；一致地散布了0,1随机的可变顺序。它给冈瑟生成器为什么能避免定期而不断被迫停的生成器的输出顺序的统计软弱的理论基础，；分析在产量顺序之间的巧合；输入冈瑟生成器的序列。这篇论文的结论将为设计者提供理论参考书；控制钟的发电机的分析器。

简介：我们在场Bertrand市场由两家卖主垄断的局面和学习的一个量模型利润上的纠纷行为公司工作。用到对手的价格的每个公司的最佳的反应的概念，我们为最大地纠缠的起始的状态发现一个仅仅纳什equilibirum点。处于起始的状态的量纠纷的存在在纳什平衡比古典发薪更高把发薪给公司。作为结果，在古典比赛的像窘境的状况被解决。[从作者抽象]

简介：-Inthispaperasimpleandefficientimplicitfinite-differenceschemeisusedfordepth-averagedtwo-dimensionalstormsurgemodel.Thisfinite-differenceschemeissimplerandmoreefficientthanthewi-dely-usedADIscheme.Accuracyanalysisandstabilityanalysisindicatethattheschemehastwo-orderac-curacyandisunconditionallystablewhenthegridsizeisconstant.ThepresentanalysisresultsshowthattheschemeisofhighernumericalaccuracythanthatintroducedbyMaa(1990).Aftertestedbyidealmod-els,acalculationexampleofarealtyphoonsurgeiscarriedout,theresultsofthenumericalsimulationco-incidewellwiththeobserveddataandtheaccuracyissufficientforengineeringapplications.

简介：Inordertosetupaconceptualdatamodelthatreflectstherealworldasaccuratelyaspossible,thispaperfirstlyreviewsandanalyzesthedisadvantagesofpreviousconceptualdatamodelsusedbytraditionalGISinsimulatinggeographicspace,givesanewexplanationtogeographicspaceandanalyzesitsvariousessentialcharacteristics.Finally,thispaperproposesseveraldetailedkeypointsfordesigninganewtypeofGISdatamodelandgivesasimpleholisticGISdatamodel.

简介：RPC模型最近在摄影测量学和遥感社区提起了可观的兴趣。RPC是能够完成高近似精确性的一个概括传感器模型。不幸地，RPC模型的参数的计算服从于在所有可得到的文学的参数起始。为没有起始的价值的RPC模型的参数的计算的一个算法在SPOT-5上被介绍并且测试，CBERS-2，ERS-1imageries。RPC模型对推扫帚和SAR形象合适。

简介：这份报纸的目的是与散开学习一个SIS流行模型的动力学。我们首先学习模型的well-posedness。然后由使用linearization方法并且构造合适的Lyapunov功能，我们分别地建立没有疾病的平衡和地方性的平衡的本地、全球的稳定性。而且，鉴于修理的Schauder，削尖定理，当时，我们证明模型承认连接没有疾病的平衡和地方性的平衡的旅行波浪答案R0>1并且c>c*。并且由两方面的Laplace变换的优点，也，我们证明模型没有旅行波浪答案连接二equilibria什么时候R0>1并且c[0，c*)。

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简介：Anonlinearshort-wave-averaged(surfbeat)modelispresented.ThemodelisbasedonthatofRoelvink(1993),butthenumericaltechniquesusedinthesolutionarebasedontheso-calledweighted-averagedflux(WAF)method(egWatsonetal.,1992),withtime-operatorsplittingusedforthetreatmentofsomeofthesourceterms.Thismethodallowsasmallnumberofcomputationalpointstobeused,andisparticularlyefficientinmodellingbreakinglongwaves.Theshort-wave(orprimary-wave)energyequationissolvedusingamoretraditionalLax-Wendrofftechnique.Resultsofvalidationindicatethatthemodelperformssatisfactorilyinmostrespects.