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简介：Inubiquitouscomputing,datashouldbeabletobeaccessedfromanylocation,andthecorrectnessofdatabecomesvitalduringthecommunication.Supposethatmanyuserssigndifferentmessagesrespectively,beforeforwardingorsendingthesemessages,thentheverifiermustspendalotofcomputingtimetoverifytheirsignatures.Consequently,theaggregatesignatureschemeisaneffectivemethodofimprovingefficiencyinthiskindofsystems,whichprovidestheconveniencefortheverifier.Inthispaper,weproposeanewcertificatelessaggregatesignatureschemewhichisefficientingeneratingasignatureandverification.ThisschemeisprovablysecureundertheextendedcomputationalDiffie-Hellmanassumption.

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简介：Background:RunningisbecominganincreasinglypopularactivityamongAmericanswithover50millionparticipants.Runningshoeresearchandtechnologyhascontinuedtoadvancewithnodecreaseinoverallrunninginjuryrates.Agrowinggroupofrunnersaremakingthechoicetotrytheminimalorbarefootrunningstylesofthepre-modemrunningshoeera.Thereissomeevidenceofdecreasedforcesandtorquesonthelowerextremitieswithbarefootrunning,butnocleardataregardinghowthiscorrespondswithinjuries.Thepurposeofthissurveystudywastoexaminefactorsrelatedtoperformanceandinjuryinrunnerswhohavetriedbarefootrunning.Methods:TheUniversityofVirginiaCenlcrforEnduranceSpor!createda10-questionsurveyregardingbarefootrunningthaiwa.spo.stedonavarietyofrunningblogsandFacebookpages.Percentageswerecalculatedforeachquestionacrossallsurveys.Fivehundredandnineparticipantsrespondedwithover93%ofthemincorporatingsometypeofbarefootrunningintotheirweeklymileage.Results:Amajorityoftheparticipants(53%)viewedbarefootrunningasatrainingtooltoimprovespecificaspectsoftheirrunning.However,closetohalf(46%)viewedbarefoottrainingasaviablealternativetoshoesforloggingtheirmiles.Alargeportionofrunnersinitiallytriedbarefootrunningduetothepromiseofimprovedefficiency(60%).anattempttogetpastinjury(53%)and/ortherecentmediahypearoundthepractice(52%).Alargemajority(68%)ofrunnersparticipatinginthestudyexperiencednonewinjuriesafterstartingbarefootrunning.Infact,mostrespondents(69%)actuallyhadtheirpreviousinjuriesgoawayafterstartingbarefootrunning.Runnersrespondedthattheirpreviousknee(46%),foot(19%),ankle(17%),hip(14%),andlowback(14%)injuriesallproceededtoimproveafterstartingbarefootrunning.Conclusion:Priorstudieshavefoundthatbarefootrunningoftenchangesbiomechanicscomparedtoshodrunningwithahypothesizedrelationshipofdecreasedinjuries.Thispaperreports

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简介：响应全球气候的哈德利发行量变化怎么并且怎么变化它在地区性、全球的气候之上的变化影响在过去几年里在文学产生了很多兴趣。在这份报纸，在过去几十年的哈德利发行量的一致、统计上重要的poleward扩大被表明，用象哈德利发行量的代理措施的独立观察数据集。两观察出去的longwave放射和降水数据集显示出大约3.6的哈德利房间的年度平均全部的poleward扩大

简介：ThepresenceofthereversalsofthegeomagneticfieldwithintheBrunhesisindicatedbypaleomagneticstuidesonCenozoicvolcanicrocksintheLeizhouPeninsula,loessstrataandQuaternarymarinesedimentsinthePearlRiverMouthbasininChina.Theseregionalreversalsoccuredat0.58±0.13Ma,0.45Maand0.47—0.48MarespectivelyaccordingtotheresultsofK-Arisotopicdatingandclimatostratigraphicandbiostratigraphicanalyses.ThereversalsequivalenttotheEmperorEventissuggested.ThereversalsrevealedindifferentregionswithvariouslithologiccharactersinChinaprovethattheEmperorEventisaglobalreversaleventratherthanageomagneticexcursion,anditsconfirmationwillpermitaprecisedefinitionoftheMiddle/LatePleistoceneboundary.

简介：隐私是在电子投票的一个重要问题。在电子投票的完整的隐私的概念第一被建议，不是仅仅选民的隐私被担心，而且候选人的。没有任何信任第三方，保存电子选举建筑学的隐私被介绍，为k-out-of-m选举的一种一般技术也基于分布式的ElGamal加密和混合火柴被提供。没有揭示他们的愿望和输的候选人的投票，选民能自己计算结果。而且，获胜者候选人的投票是否多于一半，能直接被验证。这个计划满足投票并且去模式并且完成完整的隐私。正确性和安全也被分析。

简介：Vehielesenlistedwitheomputing,sensingandcommunicatingdevicescancreatevehicularnetworks,asubsetofcooperativesystemsinheterogeneousenvironments,aimingatimprovingsafetyandentertainmentintraffic.Invehicularnetworks,avehicle’sidentityisassociatedtoitsowner’sidentityasauniquelinkage.Therefore,itisofimportancetoprotectprivacyofvehiclesfrombeingpossiblytracked.Obviously,theprivacyprotectionmustbescalablebecauseofthehighmobilityandlargepopulationofvehicles.Inthiswork,wetakeanon-trivialsteptowardsprotectingprivacyofvehicles.Asprivacydrawspublicconcerns,wefirstlypresentprivacyimplicationsofoperationalchallengesfromthepublicpolicyperspective.Additionally,weenvisionvehicularnetworksasgeographicallypartitionedsubnetworks(cells).Eachsubnetworkmaintainsalistofpseudonyms.Eachpseudonymincludesthecell’sgeographicidandarandomnumberashostid.Beforestartingcommunication,vehiclesneedtorequestapseudonymondemandfrompseudonymserver.Inordertoimproveutilizationofpseudonyms,weaddressastochasticmodelwithtime-varyingarrivalanddeparturerates.Ourmaincontributionincludes:1)proposingascalableandeffectivealgorithmtoprotectprivacy;2)providinganalyticalresultsofprobability,varianceandexpectednumberofrequestsonpseudonymservers.Theempiricalresultsconfirmtheaccuracyofouranalyticalpredictions.

简介：Theperformanceofmassivemultiple-inputmultiple-output(MIMO)systemislimitedbypilotcontamination.Toreducethepilotcontamination,uplinkanddownlinkprecodingalgorithmsareputforwardbasedoninterferencealignmentcriterion.Intheuplinkreceivingprocessing,thetargetfunctionalignsthepilotcontaminationandtheinterferencesignalstothesamenullspaceandacquiresthemaximalspacedegreeofthedesiredsignals.Theuplinkreceivingprecodingmatrixissolvedonmaximalsignaltointerferenceplusnoiseratio(SINR)criterionconsideringtheimpactofthepilotcontaminationonchannelestimations.Theuplinkreceivingprecodingmatrixisusedasthedownlinktransmittingprecodingmatrix.Exploitingthechannelreciprocity,itisprovedthat,iftheuplinkreceivingprecodingmatrixachievesmaximalSINR,theidenticalprecodingmatrixcanbeusedinthedownlinktransmissionandacquiresmaximalsignaltoleakageplusnoiseratio(SLNR).Simulationsshowthatthespectrumefficiencyoftheproposedalgorithmcanreachabout1.5timeshigherthanthatofpopularmatchedfiltering(MF)precodingalgorithm,andabout1.1timeshigherthanmulti-cellminimummeansquareerror(MMSE)precodingalgorithm.Theperformanceoftheproposedalgorithmcanbeimprovedapproximatelylinearlywiththeincreasingofthenumberofantennas.

简介：存取控制计划被建议让系统宽信息管理(游泳)在实际应用程序处理属性撤回的问题。把基于的加密(ABE)基于属性，这个计划介绍代理重新加密机制和关键加密钥匙(KEK)树与属性撤回认识到有细密纹理的存取控制。这份报纸根据民用的航空的现状定义属性。与以前建议的一些另外的计划相比，这个计划不仅弄短密文(CT)和私人钥匙的长度而且改进加密和解密的效率。计划能抵抗串通攻击并且在游泳保证数据的安全。

简介：Quantumalgorithmsbringgreatchallengestoclassicalpublickeycryptosystems,whichmakescryptosystemsbasedonnon-commutativealgebraicsystemshoptopic.Thebraidgroups,whicharenon-commutative,haveattractedmuchattentionasanewplatformforconstructingquantumattack-resistantcryptosystems.Aringsignatureschemeisproposedbasedonthedifficultyoftherootextractionproblemoverbraidgroups,whichcanresistexistentialforgeryagainsttheadaptivelycho-sen-messageattackundertherandomoraclemodel.

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简介：Thispaperpresentsfuzzy-baseddesignforthecontrolofoverheadcrane.Insteadofanalyzingthecomplexnonlinearcranesystem,theproposedapproachusessimplebuteffectivewaytocontrolthecrane.Therearetwinfuzzycontrollerswhichdealwiththefeedbackinformation,thepositionoftrolleycraneandtheswingangleofload,tosuppresstheswayandacceleratethespeedwhenthecranetransportstheheavyload.Thisapproachsimplifiesthedesigningprocedureofcranecontroller;besides,thetwincontrollermethodreducestherulenumberwhenfulfillingthefuzzysystem.Finally,experimentalresultsthroughthecranemodeldemonstratetheeffectivenessofthescheme.

简介：一个计划为二面洞镜子为纠缠的状态的产生被介绍。在计划，开始处于一个真空状态的每面镜子与一块弱协调的地交往，导致一个光子数字依赖者踢。从洞漏的一个光子的察觉折叠二面镜子到一个纠缠的状态。

简介：在这篇文章，一个Grassmannianprecoding多用户多重输入多重产量(MU-MIMO)为downlink传播的计划被建议。建议MU-MIMO计划将表现安排并且precoding同时在库驻扎，增加获得多用户差异获得和precoding，最大化系统能力。precoding方法与Grassmannianprecoding有关，它扩大点对点的单个用户的Grassmannianprecoding到point-to-multipoint多用户Grassmannianprecoding。它比单身的用户MIMO(SU-MIMO)系统提供进一步重要的系统能力改进并且也超过块diagonalization(BD)在一样的模拟环境下面的算法。