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简介：日立新款Dcskstar7K20002TB结合高性能、高容量、低功耗以及其他环保特色为一体．专为能源之星级电脑和其他高性能桌面电脑系统而设计。它采角第四代技术，沿用位密度式五碟设计的垂直记录技术，并在此基础上加八了超静音运行设计，该产品同样具备了32MB大容量缓存，

简介：Anincreasingnumberofstructuralhomologysearchtools,mostlybasedonprofilestochasticcontext-freegrammars(SCFGs)havebeenrecentlydevelopedforthenon-codingRNAgeneidentification.SCFGscanincludestatisticalbiasesthatoftenoccurinRNAsequences,necessarytoprofilespecificRNAstructuresforstructuralhomologysearch.Inthispaper,asuccinctstochasticgrammarmodelisintroducedforRNAthathascompetitivesearcheffectiveness.Moreimportantly,theprofilingmodelcanbeeasilyextendedtoincludepseudoknots,structuresthatarebeyondthecapabilityofprofileSCFGs.Inaddition,themodelallowsheuristicstobeexploited,resultinginasignificantspeed-upfortheCYKalgorithm-basedsearch.