简介:China’spatentsystemwasestablishedin1984andcameintoeffectin1985.Threecomprehensiveamendmentshavebeenmadesofarandthefourthamendmentthatismorecomprehensiveisinprogress.Thisamendmentamountsto33articles,addingachapterof“ImplementationandApplicationofPatents”.Thekeypointsofamendmentaretostrengthentheprotectionofpatents,promotetheimplementationandapplicationofpatents,andincreasetheliabilityofpatentinfringement.Theimportantpointsofamendmentaretoimprovethelevelofpatentprotection,raisetheindemnificationstandard,transfertheburdenofproof,andencouragetheinventionandtilttheinterestsofthepatenteeorinventor.TheseamendmentswillfurtherpromotetheimprovementandperfectionofChina’spatentsystemandfurtherpromotethecivilizationandprogressofChina’ssociety.
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简介:Recently,ithasbeenseenthattheensembleclassifierisaneffectivewaytoenhancethepredictionperformance.However,itusuallysuffersfromtheproblemofhowtoconstructanappropriateclassifierbasedonasetofcomplexdata,forexample,thedatawithmanydimensionsorhierarchicalattributes.Thisstudyproposesamethodtoconstructeanensembleclassifierbasedonthekeyattributes.Inadditiontoitshigh-performanceonprecisionsharedbycommonensembleclassifiers,thecalculationresultsarehighlyintelligibleandthuseasyforunderstanding.Furthermore,theexperimentalresultsbasedontherealdatacollectedfromChinaMobileshowthatthekey-attributes-basedensembleclassifierhasthegoodperformanceonbothoftheclassifierconstructionandthecustomerchurnprediction.
简介:Toaddressthephenomenonofsparkingduringtheedgeinductionheatingprocessinhotstripmills,thispaperusesnumericalsimulationtosystematicallyinvestigatethekeyfactorsinfluencingsparkingandtheireffects.Thedistributionofinducedcurrentdensityinthesteelplateaboverollerconveyortableduringtheheatingprocessiscalculatedandcomparedunderdifferentconditions,includingtherelativepositionsofthesteelplateandinductioncoil,thewidthofthesteelplate,andchangesinload.Theresultsshowthatwhenanarrowsteelplateisheatedorthesteelplateshiftstothesideoftheinductioncoil,sparkingbetweenthesteelplateandrollerconveyorismorelikelytooccur.
简介:Certificatelessencryptionattractsalotofattentionsofarbyeliminatingthekeyescrowprobleminidentity-basedencryptionandpublickeycertificatesinthetraditionalpublickeycryptography.Byconsideringthethreatfromthekeyexposure,itisdesirabletoincorporatetheideaofkey-insulatedcryptosystemintothecertificatelessencryption.Inthispaper,wehavedesignedanefficientcertificatelesskeyinsulatedencryption(CL-KIE)schemetoachievethisgoal.Byourapproach,thecomputationalperformanceofourschemehasbeenimprovedsignificantlyintermsofreductiononrunningtimeandstorage.WealsogavethesecurityproofofthenewCL-KIEschemeagainstthechosenplaintextattacks(CPAs)intherandomoracle,consideringtheassumptionofthecomputationalDiffie-Hellman(CDH)problem.
简介:Nowadays,thepassword-basedremoteuserauthenticationmechanismusingsmartcardisoneofthesimplestandconvenientauthenticationwaystoensuresecurecommunicationsoverthepublicnetworkenvironments.Recently,Liuetal.proposedanefficientandsecuresmartcardbasedpasswordauthenticationscheme.However,wefindthatLiuetal.’sschemeisvulnerabletotheoff-linepasswordguessingattackanduserimpersonationattack.Furthermore,italsocannotprovideuseranonymity.Inthispaper,wecryptanalyzeLiuetal.’sschemeandproposeasecurityenhanceduserauthenticationschemetoovercometheaforementionedproblems.Especially,inordertopreservetheuseranonymityandpreventtheguessingattack,weusethedynamicidentitytechnique.Theanalysisshowsthattheproposedschemeismoresecureandefficientthanotherrelatedauthenticationschemes.
简介:摘要目的筛查COPD合并OSAHS的患病率,通过单纯COPD和重叠综合征的各项参数对比,探讨重叠综合征对机体的影响;对重叠综合征患者给予无创呼吸机治疗,探讨无创呼吸机在重叠综合征中的临床应用价值。方法入组确诊COPD患者52人,进行多导睡眠监测,确诊合并OSAHS17人。将患者分成单纯COPD组和重叠综合征组,二组患者均进行肺功能、血气分析及症状评分;重叠综合征组患者分成呼吸机治疗组7人和非呼吸机治疗组10人,观察二组病人症状、血气分析结果。结论重叠综合征患者较单纯COPD患者存在更严重的低氧血症及高碳酸血症,肺功能损伤更严重,重叠综合征合并高血压、冠心病、脑血管疾病的比例明显高于单纯COPD组;无创呼吸机可明显改善重叠综合征患者的通气功能。
简介:摘要目的分析COPD管控护理门诊的开设对提高COPD患者生活质量的价值。方法本院于2017年10月开设COPD管控护理门诊,分别选取2017年1月至2017年5月、2017年10月至2018年3月本院收治的50例COPD患者为研究对象,作为对照组和研究组,分析两组患者的生活质量和肺功能恢复情况。结果研究组患者各项观察指标均优于对照组(P<0.05)。结论COPD管控护理门诊的开设能够有效提高COPD患者的生活质量,帮助恢复其肺功能,建议积极在各个医院推广应用。
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简介:Intheair-waterquantumkeydistribution(QKD),theirregularseasurfacehassomeinfluenceonthephotonpolariza-tionstate.Thewindisconsideredasthemainfactorcausingtheirregularity,sothemodelofirregularseasurfacebasedonthewindspeedisadopted.Therelationshipsofthequantumbiterrorratewiththewindspeedandtheinitialincidentanglearesimulated.Therefore,themaximumsecuretransmissiondepthofQKDisconfirmed,andthelimita-tionofthewindspeedandtheinitialincidentangleisdetermined.Thesimulationresultsshowthatwhenthewindspeedandtheinitialincidentangleincrease,theperformanceofQKDwillfalldown.Undertheintercept-resendattackcondition,themaximumsafetransmissiondepthofQKDisupto105m.Torealizesafecommunicationsinthesafedivingdepthofsubmarines(100m),theinitialincidentangleisrequestedtobenotexceeding26~,andwiththeinitialincidentan~leincreased,thelimitationofwindspeedisdecreased.
简介:摘要慢性阻塞性肺疾病(ChronicObstructivePulmonaryDisease,COPD)是以进行性、不完全可逆的气流受限为主要特征的肺部疾病1,是一种世界性的多发病,其患病率和病死率是引起肺部疾病的主要原因,且呈逐年上升的趋势,预计至2020年该病将位居疾病死亡原因的第3位2,居我国疾病负担的首位3。由此可见,在患者住院期间,有效的控制患者疾病的发展,降低患者的病情恶化程度是治疗COPD的首要目标。而待患者出院后,有效的增强患者及其家属对COPD的认知,提高自我照顾能力对预防COPD的复发也起到了重要的作用4。目前,由于我国COPD患者对疾病认知能力普遍较低,导致大多数已出院且处于稳定期的患者疾病复发次数增加,发病程度增高,且带动着发生了一系列的并发症。因此,为了提高患者的生活质量,降低COPD的复发率就必须对出院的COPD患者实施延续护理服务,其作用不明而喻。现将延续护理服务对COPD出院患者的作用综述如下。