简介:ApplicationofPRRAtotheRuralDevelopmetinChinaTXApplicationofPRRAtotheRuralDevelopmentinChinaByShenYueqinZhouGuomoYuShuquanLiMin...
简介:Wavelettransformisaparticularlyusefultooltocharacterizetran-sientphenomenasuchaswavebreaking.Inthispaper,weapplywavelettransformtothedetectionandquantificationofthebreakingwaves.Weuseanewmethodthatusesthelocalpropertiesofwavelettransformtodetectandquantifythebreak-ingwavesandgivesomenewbreakingcriteria.Bycomparingthismethodwiththeclassicmethod,wefindthatwavelettransformisveryeffectiveinthedetectionofbreakingwaves.Withwavelettransform,asetofmeasuredwindwavedataisinves-tigated.Theresultshaverevealedsomepreviouslyunknownphenomenaaboutwavebreaking.
简介:Thegeneralizedregressionneuralnetwork-onekindofRBFneuralnetwork,ischosentoconstructtheinverse-kinematicsmodelfortheshotcreterobotwhichhasredundantdegree-of–freedom.Theinverse-kinematicsmodeloftheobjectistrainedbythegenerallearningmethod.Inconstructingmodelprocess,differentpartitionmethodsistriedtodividethejointspaceanddifferentdiffusioncoefficientvaluetotraintheneuralnetwork.Theinfluenceofthespreadcoefficienttotheapproachabilityisalsostudied.Thesimulationmethodisadoptedtotesttheperformanceoftheneuralnetwork.Thesimulationresultturnsouttobesatisfactory.
简介:Objective:Toassessthetherapeuticeffectofulinastatinonseverecraniocerebralinjuriesandtoexploreitsmechanism.Methods:Therewere87casesofseverebraininjuryinthisseriesandtheywereeithertreatedbyulinastatin(treatmentgroup,41cases)ornot(controlgroup,46cases)besidesroutinemanagements.WeestimatedC-reactiveprotein,interleukin-6,superoxidedismutase,andendothelinfromplasmasofallthecasesonthe1st,3rd,5th,and7thdayafterinjury.Results:C-reactiveproteinlevelroseonthe1stand3rddayafterinjuryinthetwogroups,butdescendedintreatmentgrouponthe5thand7thdayandwassignificantlylowerthanthatincontrolgroup(P<0.01).Nosignificantdifferencewasfoundforinterleukin-6intwogroupsduring1-5daysafterinjury,butonthe7thday,itdecreasedsignificantlyintreatmentgroupthancontrolone(P<0.01).Superoxidedismutasewashigherintreatmentgroupthancontrolonein5-7daysafterinjury(P<0.01).Endothelinelevatedonthe1stdayafterinjurybutdroppedafterwardsinthetwogroups,inwhichthelevelintreatmentgroupwaslowerthanthatincontrolone.Theincidenceofgastrointestinalhemorrhagewaslowerintreatmentgroupthancontrolone(P<0.01).Conclusions:Ulinastatinhasthefunctionofprotectingcerebraltissue,reducingtheincidenceofgastrointestinalhemorrhage,improvinghepaticandrenalfunctionandprognosis.
简介:Inthispaper,fibrouschelatingexchangerswith-N(CH2COOH)2grouphavebeenpreparedforthefirsttimebyaweaklybasicanionexchangefiber(aminatedfiber)asthestartingmaterials.ThefiberswerequiteeffectivefortheadsorptionofheavymetalionsuchasCu^2+.Inaddition,IRspectrumofthestructureoffibersconfirmsthatitisfeasibletoprepareiminocarboxylicchelatingfiberthroughdirectcarboxylationreaction.
简介:统计生态学与分析技术和方法的前进很快发展。这份报纸在后面的方面在中国关于统计生态学做了评论:数据收集,空间并且时间模式分析,种类丰富和种类区域关系,人口动态,种类亲密关系,社区类似和社区簇分析,和社区分类。
简介:Timereversalisappliedtotheunderwaterspreadingspectrumcodingcommunication.Onthebaseofanalyzingthefocusingcharacteristicsofthetimereversalinunderwaterwaveguide,thetimereversalisstudiedtoovercomethewavedistortionoftheencodedsignalcausedbythemulti-patheffect.TheexperimentresearchforunderwatercodingcommunicationiscarriedoutinalabwatertankandthecorrespondingtheoreticalanalysisisalsoconductedbyBinaryPhaseShiftKeying(BPSK)encodingandBarkercodewith7chipsforthespreadingspectrumsignal.Theresultsshowthatthetimereversalcanimprovethefocusinggainandincreasetheratiooftheprincipaltothesecondlobeofthecodingsignal,andcandecreasethebiterrorrateandincreasethecommunicationdistance.
简介:Split-phase current differential protection has excellent capability of fault phase selection no matter whether the fault occurs on the same line or cross over lines.,under-reaching distance protection will not overreach when fault occurs at the end of line or the beginning of the next line after series capacitor.,The whole protection scheme for double-circuit lines on the same tower consists of split-phase current differential protection or split-phase composite distance carrier protection and zero-sequence directional comparison protection as main protection
简介:WiththedevelopmentofWeb2.0,moreandmorepeoplechoosetousetheInternettoexpresstheiropinions.Allthisopinionstogetherintoanewformtextwhichcontainsalotofvaluableemotionalinformation,thisiswhyhowtodealwiththesetextsandanalysistheemotionalinformationissignificantforus.Wegetthreemaintasksofsentimentanalysis,includingsentimentextraction,sentimentclassification,sentimentapplicationandsummarization.Inthispaper,basedontheRsoftware,weintroducedthestepsofsentimentanalysisindetail.Finally,wecollectthemoviereviewsfromtheInternet,anduseRsoftwaretodosentimentanalysisinordertojudgetheemotionaltendencyofthetext.
简介:Auditorymodelhasbeenappliedtoseveralaspectsofspeechsignalprocessingfield,andappearstobeeffectiveinperformance.Thispaperpresentstheinversetransformofeachstageofonewidelyusedauditorymodel.Firstofallitisnecessarytoinvertcorrelogramandreconstructphaseinformationbyrepetitiousiterationsinordertogetauditory-nervefiringrate.ThenextstepistoobtainthenegativepartsofthesignalviathereverseprocessoftheHWR(HalfWaveRectification).Finallythefunctionsofinnerhaircell/synapsemodelandGammatonefiltershavetobeinverted.Thusthewholeauditorymodelinversionhasbeenachieved.Anapplicationofnoisyspeechenhancementbasedonauditorymodelinversionalgorithmisproposed.Manyexperimentsshowthatthismethodiseffectiveinreducingnoise.EspeciallywhenSNRofnoisyspeechislowitismoreeffectivethanothermethods.Thusthisauditorymodelinversionmethodgiveninthispaperisapplicabletospeechenhancementfield.
简介:Oursocietyisdevelopingrapidly,inasocietylikethis,theentrepreneursandproductmanufacturerstendtousewhitespaceorpicturesmassivelyinsteadoftextinformationintheiradvertisementsorleaflets.Thisphenomenonistotallydifferentfromitwasintheyearspast,whenhighpricesandoutdatedtechnologieslimitedthecapabilityofprintingindustry,andforcedthemtoputmoretextinformationintheirpublicationsorprintedmaterials.
简介:ThenewWIODdatabaseallowsforimprovedempiricalanalysisonawiderangeofimportantenvironmentalresearchquestions.InthispaperwedemonstratethescientificpoweroftheWIODdatabaseandanalyzeveryurgentpolicyquestionsontheimpactsofinternationaltradeandstructuralchangeontheenvironment.Weapplyrecenteconometricapproachestoshowtheimpactofinternationaltradeontheenvironmentviaitsdifferentchannelsasforinstancetoincreasewelfareandpotentiallyaffectenvironmentalregulationaswellascountries’sector.Thisapproachhasbecomeknownastheeconometricstructuraldecompositionmethod.Inadditiontotheseguidelinesbytheliterature,aneconometricpaneldataapproachisofferedtoshedsomelightontheimpactofstructuralchangeandinternationaltradeonenvironmentalpressure,whereweespeciallyaddressandsolveseveralendogeneityissuesthataddfurthercomplexitytotheanalysis.
简介:Inthispaper,theapplicationofhomotopymethodstotheloadflowmulti-solutionproblemsofpowersystemsisintroduced.BythegeneralizedBernshteintheorem,thecombinatorialnumberC2n^misshowntobetheBKKboundofthenumberofisolatedsolutionsofthepolynomialsystemtransformedfromloadflowequationswithgenericallychosencoefficients.AsaresultofthegeneralBezoutnumber,thenumberofpathsbeingfollowedisreducedsignificantlyinthepracticalloadflowcomputation.Finally,thecompleteP-Vcuresareobtainedbytrackingtheloadflowwithhomotopymethods.
简介:Thispaperpresentedtheapplicationofthedirecthotchargerolling(DHCR)technologyinNingboSteel.Fiveaspectshavebeensystematicallyaddressedandanalyzed,whichincludesalesorder,productionscheduleprogramming,steelmaking,continuouscastingandhot-rolling.TheaverageDHCRproductratehasreached55%andtheaverageslabchargingtemperature699℃.Asaresult,theproductioncost,theenergyconsumptionandtheCO2emissionhavebeensignificantlyreduced.ItisconcludedthatabreakthroughinapplicationoftheDHCRtechnologyhasbeenachievedatNingboSteel.