简介:对于方程Φ(n)=S(n11),Φ2(n)=S(n11)进行了研究,并得到了这两个方程的所有正整数解,其中Φ(n)为Euler函数,Φ2(n)为广义Euler函数,S(n)为Smarandache函数。
简介:LongyuanElectricPowerGroupisambitioustoaccelerateconstructionofwindpowerasitsownimportantstrategyofsustainabledevelopment.Ithasdrawnupsixstrategiesofqualifiedpeople,market,scale,operation,R&Dandbrandedwindpower,andworkshardforthetargetthatitsshareholdingwindpowerinstalledcapacityreachmorethan35%ofthetotalalloverthecountrywithinaperiodofsixyears.
简介:Weadheretotheunchangedpur-suitinthechangingmarket,thatis'TopQualityandTopSer-vice'.Itisthehighesttargetofimprovingtheclients'value,creatingabrightfuturebyhighquality,hence,tocreateafirstclassenterpriseandfirstclassbrand.Stepbystep,wehaverealizedthedreamsonebyone.Wearelookingforwardtoagreatersuccess!
简介:组G的Wielandt亚群,由w(G)表示了,是G的所有低于正常的亚群的normalizers的交叉。在这份报纸,作者为每整数i为最大的班G,为所有整数i的任何一个wi(G)=i(G)或wi(G)=i+1(G)的p组显示出那,并且为在有K1的G的每正常亚群K的w(G/K)=(G/K)。同时,为最大的班的常规p组的一个必要、足够的条件令人满意的w(G)=2(G)被给。最后,如果G是有基本z(G)的non-abelianp组,作者证明力量自守组PAut(G)是基本abelianp组?\mho1(G)\zeta(G)\cap\mho_1(G)。
简介:Basedonthe1stordercnoidalwavetheory,thewavediffractionaroundthepiergroupinshallowwaterisstudiedinthispaper.Theformulasforcalculatingthenonlinearwaveforcesarealsopresentedhere.Inordertoverifythetheoreticalresults,modeltestsareconductedinthewaveflumeinTheStateKeyLaboratoryofCoastalandOffshoreEngineeringlocatedinDalianUniversityofTechnology.TherangeofthewaveparametersintheexperimentsischaracteristicwaveperiodTg/d1/2=8.08-22.86,characteristicwaveheightH/d=0.10.45.Theresultsobtainedfromtheexperimentsagreewiththetheoreticalresultsquitewell.Itisshownthat,inshallowwaterthenonlinearwaveforcesactingonapiergrouparegreaterthanthosecalculatedbylinearwavetheory,thevalueofincrementinwaveforceincreaseswiththeincreasesofthenonlinearityofthewave.Inthewaverangestudiedinthispaper,thenonlinearwaveforcecanreachover4timestheforcecalculatecdbylinearwavetheory.Thus,itissuggestedthat,whenTg/d1/2>8,thewaveforceonthepiersinthepiergroupinshallowwatershouldbecalculatedbyusingthecnoidalwavetheory.
简介:1.CommunityresourcemanagementandbeneficiarygroupInthemanagementofcommunityresources,thevillagersbeartheresponsibilitiesandrolesofmanagingcommunityresources,atthesametime,theygetbenefitsfromthemanagementinvariousways,forinstance,thecollectingofwildnon-woodforestproducts,theacquiringofmanure,theharves
简介:ShandongHaihuaGroupCo.,Ltd..(hereinafterreferredtoasSHG)islocatedonthesouthernbankofLaizhouGulfintheBohaiSea,thenortheastofWeifang,acityrenownedastheworldkitecapital.EstablishedinAugust1995,onthebasisofitspredecessorsWeifangSodaAshFactoryandShandongYangkouSaltworks,SHGisanexceptionallylarge-sizedenterprise,
简介:Theadsorptionprocessesofantibioticsofthetetracylinegroup(ATG)byseveralhome-madesulfocationitesarestudiedinthispaper.TheresultsshowthattheadsorptionmaybeofnonequivalentnormalityundercertainpHcondition.Theadsorptionmechanismisdiscussedwithinfraredspectrometry.ItcanbeconcludedthatATGcaninteractwithsulfocationitesbyionexchangemechanismorion-transfermechanismorbothofthem.
简介:Thispaperconsiderssingle-machineschedulingproblemsingrouptechnologywiththejobs'processingtimesbeingsimplelinearfunctionsoftheirstarttimes.Theobjectivefunctionsaretheminimizingofmakespanandtotalweightedcompletiontime.SomeoptimalconditionsandalgorithmsaregivenandthefactthattheproblemoftotalweightedcompletiontimesisNP-hardisproved.