简介: 小说创作的普遍性危机,正在被我们所经历.这个危机的形成除了小说这种形式走过了它的鼎盛时期,必然要为其他形式--包括高科技制作的虚假空间和其他娱乐形式所替代之外,更与现代人日复一日格式化和不断被复制的生活有关.我们已经没有新的经验可供书写.因此,当代文学从发生那天开始,所经历的是一条集体经验、个人经验再到感受性的道路.当作家不能提供新的写作经验的时候,表达感受就成为小说勉为其难的出路.……
简介:Thetechniqueoncomputingthehorizontalpressuregradientforce(PGF)inRegCM2isimprovedwiththeerrorsubtractionmethod.Moreover,theregionalclimateinJuneof1991inChinaissimulatedbyemployingtheRegCM2.ComparisonwithotherschemesforcomputingthePGFshowsthattheerrorsubtractionmethodcaneffectivelyreducetheerrorofthePGF,improvethesimulationofwindsandalleviatethespuriousprecipitationinsteeptopographicareas.Furthermore,thesimulationofprecipitationinotherareasisinbetteraccordancewiththeobservation.
简介:LetAandCdenoterealn×nmatrices.Givenrealn-vectorsx1,………,xm,m≤n,andasetofnumbers(L)={λ1,λ2…λm},Wedescrbe(Ⅰ)theset()ofallrealn×nbisymmetricpositiveseidefinitematricesAsuchthatAxiisthe"best"approximatetoλixi,i=1,2,...,minFrobeniusnormand(Ⅱ)theYinset()whichminimizeFrobeniusnormof||C-Y||.AnexistencetheoremofthesolutionsforProblemⅠandProblemⅡisgivenandthegeneralexpressionofsolutionsforProblemⅠisderived.SomesufficientconditionsunderwhichProblemⅠandProblemⅡhaveanexplicitsolutionisprovided.Anumer-icalalgorithmofthesolutionforProblemⅡhasbeenpresented.