简介：Thisyearmarksthesecondyearafterweenteredthenewcentury.Onthewhole,Chinaisfacingasoundinternationalsituationandsecurityenvironment.Tworeasonsconcernedcouldbementioned:first,inthepastyear,theforeignrelationsofourcountrydevelopedstablyandsteadilyinseveralmajoraspects,withoutanyseriousknottyeventsoccurring.ThesameisbasicallytrueinChina’srelationswith

简介：Amodifiedbottleneck-based(MB)heuristicforlarge-scalejob-shopschedulingproblemswithawell-definedbottleneckissuggested,whichissimplerbutmoretailoredthantheshiftingbottleneck(SB)procedure.Inthisalgorithm,thebottleneckisfirstscheduledoptimallywhilethenon-bottleneckmachinesaresubordinatedaroundthesolutionsofthebottleneckschedulebysomeeffectivedispatchingrules.ComputationalresultsindicatethattheMBheuristiccanachieveabettertradeoffbetweensolutionqualityandcomputationaltimecomparedtoSBprocedureformedium-sizeproblems.Furthermore,itcanobtainagoodsolutioninashorttimeforlarge-scalejob-shopschedulingproblems.

简介：克服做特别在宽乐队差距半导体，在半导体的瓶颈是在半导体物理的挑战许多年了。在这份报纸，我们在提高由表面活化剂和紧张做考察一些最近的进步。我们证明那表面活化剂和紧张是二条有效途径在取向附生的生长提高掺杂物溶解度。表面活化剂能在乐队差距内深介绍精力水平，使主人混合物不太稳定，因此降低故意的掺杂物的形成精力。紧张提高了做基于掺杂物导致的观察在主人的体积变化。如果当掺杂物导致了体积变化，外部紧张在一样的方向，掺杂物的形成精力被减少。这效果能被用来调节做地点，因此做类型，在一位主人。两个都包括紧张和表面活化剂的一个混合方法被建议，它能是一个有希望的一般方法进一步提高做。

简介：Acellularautomaton(CA)modelisproposedinthispapertoanalyzeabridgetrafficbottleneck.Thesimulationresultswiththismodelshowthatthereareseveralphasetransitionsinthetrafficaveragedensity,velocityandflowforeachlaneunderaperiodicboundarycondition.Anunstablephaseinthetrafficaveragedensityandvelocityfortheupstreamanddownstreamlanesofthebridgeisshowninarangeofinitialtrafficdensities.Thecriticalpointsofthephasetransitionsandthephenomenonoftheunstablephasefoundinthesimulationarealsoexplainedwiththemean-fieldtheory.

简介：Theeffectofportalveintumorthrombus(PVTT)ontheprognosisofpatientswithhepatocellularcarcinomahasbecomeclearoverthepastseveraldecades.However,identifyingthemechanismsandperformingthediagnosisandtreatmentofPVTTremainchallenging.Therefore,thisstudyaimedtosummarizetheprogressintheseareas.AcomputerizedliteraturesearchinMedlineandEMBASEwasperformedwiththefollowingcombinationsofsearchterms:'hepatocellularcarcinoma'AND'portalveintumorthrombus.'AlthoughseveralsignaltransductionormolecularpathwaysrelatedtoPVTThavebeenidentified,theexactmechanismsofPVTTarestilllargelyunknown.Manybiomarkershavebeenreportedtodetectmicrovascularinvasion,butnonehaveprovedtobeclinicallyusefulbecauseoftheirlowaccuracyrates.SorafenibistheonlyrecommendedtherapeuticstrategyinWesterncountries.However,moretreatmentoptionsarerecommendedinEasterncountries,includingsurgery,radiotherapy(RT),transhepaticarterialchemoembolization(TACE),transarterialradioembolization(TARE),andsorafenib.Therefore,weestablishedastagingsystembasedontheextentofportalveininvasion.Ourstagingsystemeffectivelypredictsthelong-termsurvivalofPVTTpatients.Currently,severalclinicaltrialshadshownthatsurgeryiseffectiveandsafeinsomePVTTpatients.RT,TARE,andTACEcanalsobeperformedsafelyinpatientswithgoodliverfunction.However,onlyafewcomparativeclinicaltrialshadcomparedtheeffectivenessofthesetreatments.Therefore,morerandomizedcontrolledtrialsexaminingtheextentofPVTTshouldbeconductedinthefuture.

简介：Inthethree-phasetrafficflowstudies,thetrafficflowcharacteristicatthebottlenecksectionisahotspotintheacademicfield.Thecontroversyaboutthecharacteristicsofthesynchronizedflowatbottleneckisalsothemaincontradictionbetweenthethree-phasetrafficflowtheoryandthetraditionaltrafficflowtheory.Undertheframeworkofthree-phasetrafficflowtheory,thispapertakestheon-rampasanexampletodiscussthetrafficflowcharacteristicsatthebottlenecksection.Inparticular,thispapermainlyconductsthemicro-analysistotheeffectoflanechangeunderthetwolaneconditions,aswellastheeffectoftheon-ramponthemainlinetrafficflow.Itisfoundthatwhenthemainroadflowislow,thegreatertheon-rampinflowrate,thehighertheaveragespeedofthewholeroadsection.Astheprobabilityofvehiclesenteringfromtheon-rampincreases,theflowandtheaveragespeedofthemainroadaregraduallystabilized,andthentheon-rampinflowvehiclesnolongerhaveasignificantimpactonthetrafficflow.Inaddition,thispaperfocusesonthevelocitydisturbancegeneratedattheon-ramp,andproposesthecorrespondingon-rampcontrolstrategybasedonit,andthesimulationverifiedthatthecontrolstrategycanreasonablycontrolthetrafficflowbytheon-ramp,whichcanmeetthecontrolstrategyrequirementstosomeextent.