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  • 简介:AbstractBrucellosis is a zoonotic disease caused by a number of bacteria in the genus Brucella. In animals, classical Brucella species naturally affiliate with mammals in which they cause epididymitis and orchitis in males and abortion storms in pregnant females. Because Brucella proliferates to a vast number of free organisms in the fetal organs and fluids, abortion plays a key mechanism in disease spread in nature. B. melitensis, B. suis, and B. abortus construct the three most severe zoonotic species and their role in human brucellosis stems from their association with domesticated farm animals in which they strive and transmit the disease. Here we review the relevant literature on genus Brucella, vaccination and diagnostic approaches. Meanwhile, the prevention and control programs based on the combination of vaccination coverage of the population with differentiating serological diagnosis of the infected from vaccinated animals (DIVA) and herd clearance by a test and cull strategy using validated serological tests were discussed.

  • 标签: Brucellosis Vaccine Diagnosis Prevention and control
  • 简介:Weconsideramathematicalmodelwhichdescribesacontactbetweenadeformablebodyandafoundation.ThecontactisbilateralandmodelledwithTresca’sfrictionlaw.Thegoalofthispaperistostudyanoptimalcontrolproblemwhichconsistsofleadingthestresstensorascloseaspossibletoagiventarget,byactingwithacontrolontheboundaryofthebody.Westateanoptimalcontrolproblemwhichadmitsatleastonesolution.Wealsointroducetheregularizedcontrolproblemforwhichwestudytheconvergencewhentheregularizationparametertendstozero.Finally,anoptimallyconditionisestablishedforthisproblem.

  • 标签: 最优控制问题 摩擦接触问题 Tresca 正则化参数 数学模型 应力张量
  • 简介:Itisveryimportanttomaintainthelevelofmeanarterialpressure(MAP).TheMAPcontrolisappliedinmanyclinicalsituations,includinglimitingbleedingduringcardiacsurgeryandpromotinghealingforpatient'spost-surgery.Thispaperpresentsafuzzycontroller-basedmultiple-modeladaptivecontrolsystemforpostoperativebloodpressuremanagement.Multiple-modeladaptivecontrol(MMAC)algorithmisusedtoidentifythepatientmodel,anditisafeasiblesystemidentificationmethodeveninthepresenceoflargenoise.Fuzzycontrol(FC)methodisusedtodesigncontrollerbank.Eachfuzzycontrollerinthecontrollerbankisinfactanonlinearproportional-integral(PI)controller,whoseproportionalgainandintegralgainareadjustedcontinuouslyaccordingtoerrorandrateofchangeoferroroftheplantoutput,resultinginbetterdynamicandstablecontrolperformancethantheregularPIcontroller,especiallywhenanonlinearprocessisinvolved.Fordemonstration,anonlinear,pulsatile-flowpatientmodelisusedforsimulation,andtheresultsshowthattheadaptivecontrolsystemcaneffectivelyhandlethechangesinpatient'sdynamicsandprovidesatisfactoryperformanceinregulationofbloodpressureofhypertensionpatients.

  • 标签: 心血管模型 血压控制 自适应控制 模糊控制
  • 简介:在反馈控制循环的通讯网络的插入做分析;一个网络控制系统的设计更复杂,;导致降级的一些问题控制系统的性能;甚至引起系统不稳定性。主要方面与导致网络的延期集中于网络控制系统(NCS)的稳定性分析,数据包退学学生,;多重包的传播。这些问题必须在NCS的设计被考虑。这个工作总结主要研究结果,;对一些相关处理途径评论;技术。调查的主要目的NCS是介绍新研究州的;指出未来工作的一些领域。

  • 标签: 网络控制系统 信息包损耗 网络感应延迟 计算机
  • 简介:TheControlRoomLogbook(CRL)isdesignedtoimproveandreplacethepaperlogbookstraditionallyusedintheHEPacceleratorcontrolroom.Itsfeaturesbenefittheon-linecoordinator,theshiftoperators,andtheremoteobservers,Thispaperexplainssomeofthemostattractivefeaturesforeachoftheseroles.Thefeaturesincludetheabilitytoconfigurethelogbookforthespecificneedsofacollaboration,alargevarietyofentrytypesoperatorcanaddbysimplyclickinganddragging,andaflexiblewebinterfacefortheremoteobservertokeepupwithcontrolroomactivities.TheentriesaresavedasUTF-8basedXMLfiles,whichallowedustogivethedatastructureandmeaningsuchthatitcaneasilybeparsedinthepresentandfarintothefuture.TheXMLtagdataisalsoindexedinarelationaldatabase,makingqueriesondates,keyworks,entrytypeandothercriteriafeasibleandfast.TheCRLisusedintheD0controlroom.Thispresentationalsodiscussesourexperiencewithdeployment,platformindependenceandotherinterestingissuesthatarosewiththeinstallationanduseoflogbook.

  • 标签: 高能物理 控制室 电子日记
  • 简介:IntroductionInrecent10years,duetofastdevelopingofeconomyinChina,seriouspowershortageoccurs.Thesystemfrequencyoftenfelltoabnormalvaluesinmostnetworks.Forthesecurityofpowersystems,forcedswitchoffoffeedersfromthedistributionsubstationoftenhappendtorecovernormalfrequency.Infact,thespeedofdevelopmentofChinesepowerindustryisveryhighinthisperiod.Theyearlyaverageincreasingrateofgeneratingcapacitywasabout8%.Theyearlynewlyinstalledca-pacitywasmorethan9000MWinrecent4years.Buttheannual

  • 标签: yearly installed SHORTAGE CUSTOMER switch FORCED
  • 简介:SoftwareRebuildingforSFCControlSystem¥HuangXinmin;GuoKejun;ChenMinglang;ZhangChangshuanandHuJianjunSFC,theinjectorofHIdaL,was...

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  • 简介:TheYellowRiveristhecradleofChina.Ithadlongbeenthecenterofpolitics,economicsandcultureofChinainhistory.LargecoverageflooddisasteroccurredfrequentlyintheYellowRiverbasinandthelosseswereoftenheavy.Thus,theYellowRiverisalsoconsideredastheserioushiddendangerofChina.SincethefoundingofnewChina,structuralandnon-structuralsystemsoffloodcontrolhavebeenestablishedbasically.Tremendoussuccesseshavebeenmadeonfloodcontrol.Intothe21century,floodcontrolstandardoftheLowerYellowRiverhasbeenincreasedsignificantlywiththeoperationoftheXiaolangdiReservoir.However,problemsoftheYellowRiverarecomplicatedandthetasksforsolvingtheseproblemsarearduous.Particularly,thesedimentationproblemcan'tbesolvedcompletelyinthenearfuture.Thesituationof"suspendedriver"andthreatoffloodwilllongexist.Therefore,supportedbyrapidsocialandeconomicaldevelopmentofthenationandreliedonadvancedtechnology,thefloodcontrolsystemshallbeperfected.Meantime,studyoftheYellowRivershallbeenhancedinordertobetterunderstandtheflood,getwithitanduseitthustoreduceflooddisaster.

  • 标签: Flood The YELLOW River FLOOD CONTROL
  • 简介:Forthepurposeofsolvingoptimalcontrolproblemofawall-crawlingmobilerobotworkingonsphericalcontainers,weproposetheHamel'sformalismforPontryaginMaximumPrinciple,whichgivesageneralframeworkfortheoptimalcontrolofamechanicalsystemwithvelocityconstraints,especiallynonholonomicconstraints.Theeffectivenessoftheproposedframeworkisshownbythesimulationsfortheaboveproblem.

  • 标签: Hamel's FORMALISM Optimal control Pontryagin maximum
  • 简介:Inthispaper,supposingthatthereceivedsignalsattheinputareoftheformv(t)=s1[t,x1(t)]s2[t,x2(t)]+n(t)wheresiareFMsignals(i=1,2),anovelcross-coupledphase-lockedloop(CCPLL(M))anditsmathematicalmodelareobtained.Theglobalqualitativestructuralanalysisofthemathematicalmodelofthefirst-orderloop,theacqui-sitionregionandsynchronizationregionofthefirst-orderloop,andthesynchronizationregionofthesecond-orderloopareobtained.

  • 标签: FEEDBACK CONTROL MATHEMATICAL model toral EQUATIONS
  • 简介:Inthisnote,thedissipativecontrolproblemofthegeneralquadraticsupplyrateforstatedelayedsystemsisconsidered.Asystematicapproachisusedinthisworksothatasufficientconditionontheexistenceofadelay-independentstatefeedbackcontrollerisgiven.Inaddition,asufficientconditionontheexistenceofadelay-dependentstatefeedbackispresented.Oursolutionsareexpressedintermsofmatrixinequalitiesthatcanbesolvedbynumericalmethod.Thedelay-dependentcontrollermightbelessconservativethanthedelay-independentoneinthesensethatthedelay-dependentcasemayhaveasolutionforalargerclassofsystemsthanthatfordelay-independentcase.

  • 标签: DISSIPATIVE CONTROL STATE DELAYED system MATRIX
  • 简介:Gummosisisthemostseriousdiseaseofmangoallaroundtheworld,whichisbecomingepidemicindifferentregionsofthesecountries,caninfectalmostallthecommercialandindigenousvarietiesofmango,andhasbeenregardedasanewseriousthreatofmangotreesatanalarmingratio.Thisarticlereviewedcausalorganisms,currentstatus,futureprospects,andmanagementpracticesofmangogummosisdisease.

  • 标签: mango(Mangifera INDICA L.) gummosis LASIODIPLODIA theobromae
  • 简介:Inordertomeettheneedsofpracticaldesign,aninterpolationtechniqueisemployedtoconstraintheshapeofsurfaces.Themethodofpreservingpositivityontheinterpolationsurfaceandconstraintoninterpolatingdataisalsodeveloped.Theadvantageofthisnewmethodisthatitcanbeusedtoconstraintheshapeofaninterpolatingsurfaceonlybyselectingsuitableparameters,andnumericalexamplesarepresentedtoshowtheperformanceofthemethod.

  • 标签: 插值曲面 约束控制 插值技术 显示性能 形状 表面
  • 简介:Therecentrapiddevelopmentsintheautomobileindustryhavedemandedtheextensiveuseofgalvannealed(GA)steelsheets.Inparticular,thedevelopmentoflightweightautomobilesisputtingincreasinglyhigherrequirementsonthestrengthofGAsteelsheets.Thegalvannealfurnace,whichisusedforprocessinggalvannealedsteelsheets,istypicallycomposedoftheinductionheatingsection,holdingsectionandfogcoolingsection.Thispaperdescribedthestructuralcharacteristicsofeachcomponentofthegalvannealfurnace,andanalyzedtemperaturecontrolmethodsofthegalvannealfurnacethatareimportantforthesuccessfulproductionofhigh-strengthGAsteelsheetsforautomotiveapplications.

  • 标签: 温度控制 镀锌炉 镀锌钢板 汽车行业 合金化 感应加热