简介：一个新奇的黑磷(BP)答案可饱和的吸收器(SA)被liquid-phase-exfoliated方法制作并且成功地使用了为消极地切换Q(QS)Nd:YVO4激光。与传统的稳固的SA相比，BP答案SA拥有更优秀的光透明性和更高的损坏抵抗。最短的脉搏持续时间和最高平均的产量力量被测量分别地是119ns和1.23W。就我们的知识而言，他们俩是在QS之中的最好的结果固态有基于BP的吸收器的激光到目前为止。重复率在533.2～722kHz的范围。结果显示BP答案SA的潜在的申请进高力量固态脉搏激光。

简介：Objective:ToidentifytheeffectofdyslipidemiaonauditoryfunctiondetectedbyPureToneAudiometry.Tocheckifdyslipidemiaworsensthehearinglevelindiabetics.Design:Thiswasacomparativestudywhere120subjectsbetweentheagegroupof20and50yearsunderwentpuretoneaudiometry,lipidprofileandbloodsugars.Group1consistedof30subjectswithtype2diabetesanddyslipidemia;Group2had30subjectswithisolateddiabetes;Group3had30withisolateddyslipidemiaandGroup4included30normalsubjectsascontrol.Results:Significanthearinglosswasseenonlyinthegroupwithisolateddiabetes(63%).Themostcommontypeofhearinglosswashighfrequencysensorineuralhearingloss.Whencomparisonwasmadebetweenthecombinationsofdifferentlipidprofiles,noassociationwasfoundtothelevelofhearing.Conclusions:Diabeticsaremorepronetohighfrequencyhearingloss.Alteredlipidprofilehasnoroleincausinghearingloss.

简介：在这份报纸，我们在灯芯的意义在一个部分Black-Scholes模型调查分离时间hedging策略的错误的asymptotic行为--它?-Skorohod集成。hedging错误的集中的率由于分离时间的做贸易当真策略以商人著名时，被调查。结果提供新统计工具学习并且检测效果长记忆并且为分离时间hedging的错误的林中小丘参数。

简介：近日，英国财政大臣哈蒙德在公布政府春季预算报告时宣布，为进一步推动职业教育发展，培养更多技能人才以应对脱欧后的经济发展，政府将推出全新的技术教育考试(T-level)来取代目前1.3万多种职业资格。政府将为英格兰地区的技术教育提供每年5亿英镑的额外资金，使16?19岁学生的培训时间增加50%，达到每年900小时。

简介：因为它启用自由并且从而的光子旋转度的敏感控制，光的纺纱轨道相互作用(SOI)强烈地在nanophotonics被学习了光子的轨道，它为象信号编码和路由那样的应用程序是有用的。最近的研究[Phys。加快。Lett。117，166803(2016)]证明光子的SOI在光子通过宣传的媒介的介电常数面对一个坡度表明；这提高在沿着扭曲的轨道宣传的光子散布循环地极化的光和结果。这里，我们理论上预言那，因为在不同类的绝缘的媒介和在转变光学表明的一个重力的领域之间的等价，重要SOI被导致到一个黑洞的重力的透镜过去的循环地极化的光上。这导致：我)如果黑洞的尺寸比事件光子的波长小，沿着chiral轨道宣传的光子；ii)重力的透镜到的产生图象因为这些chiral轨道，表明方位角的旋转。为探查为并且用循环地极化的光发现subwavelength尺寸黑人洞的一个方法开的调查结果。

简介：Afterthereformandopening,theeconomicrelationshipbetweenChinaandtheworldisstrengthenedheavily.Theoretically,internationalfactorshaveimpactonthedomesticgeneralpricelevelthroughasetofchannels.Thispaperemployedasampleincludingmonthlydataoffiverepresentativeindicators,toexploretheinfluenceofinternationalfactorsonChinesepricelevel.TheempiricalresultsshowedthatthereisanobviouslagforChineseCPIreactingtointernationalshocks,whilethePPIreactsimmediately.TheimpactofinternationalfactorsonChineseCPIandPPIusuallylasts12monthsatleastandtheyalwaysexhibitadifferenttransmissionmechanismforinternationalshocks.Besides,afurtherstudyrevealedthatsomestructure-breakpointsintheinfluencemechanismofinternationalfactorsexist,andgreatchangesoftheimpactdirectionandsignificancefordifferentfactorshavetakenplaceinthesubsampleperiods.

简介：Weexperimentallydemonstratethenonlinearinteractionbetweentwochirpedbroadbandsingle-photon-levelcoherentstates.EachchirpedcoherentstateisgeneratedinindependentfiberBragggratings.Theyaresimultaneouslycoupledintoahigh-efficiencynonlinearwaveguide,wheretheyareconvertedintoanarrowbandsinglephotonstatewithanewfrequencybytheprocessofsum-frequencygeneration(SFG).AhigherSFGefficiencyof1.06×10-7isrealized,andthisefficiencymayachieveheraldingentanglementatadistance.Thisalsomadeitpossibletorealizelong-distancequantumcommunication,suchasdevice-independentquantumkeydistribution,bydirectlyusingbroadbandsinglephotonswithoutfiltering.

简介：Inthispaper,thelongtimeseriesdataofthewellwater-leveldataof12wellsintheSichuanandYunnanareaisanalyzedbytheBaytap-Gtidalanalysissoftware,andwellwaterleveltidalresponsecharacteristicparameters(amplituderatioandphasechange)areextracted.Weanalyzedthefeaturesoftheshapeandstagechange,andcharacteristicparametersofthetidalresponseofwellwaterlevelbeforeandaftertheearthquakes,whichcanprovideanewmethodandapproachtoanalyzingtheresponserelationshipsbetweenwellwaterlevelandearthtideandbarometricpressure.TheresultsshowthatLuguhuWelland9otherwellsareaffectedbyearthtides,andtheirwellwaterlevelamplituderatiosandphasesarerelativelystable;theNanxiWellandDayaoWellwaterlevelchangesareaffectedbythebarometricpressurecombinedwithtideforce,andtheirwellwaterlevelamplituderatiosandphasesaremorediscrete.ThewaterlevelamplituderatiosandphasesofJiangyouWell,LuguhuWellandDongchuanWellaresignificanttolargeearthquakes,andtherelationshipbetweenseismicenergydensityandwaterlevelamplituderatiosandphasesofM_2waveofthethreewellsarepresented.

简介：Consideringtheimportanceofblackcarbon(BC),thisstudybeganbycomparingthe20thcenturysimulationofSouthAsiansummerclimateinIPCCCMIP3,basedonthescenarioofmodelswithandwithoutBC.Generally,themulti-modelmeanofthemodelsthatincludeBCreproducedtheobservedclimaterelativelybetterthanthosethatdidnot.Then,the21stcenturySouthAsiansummerprecipitationwasprojectedbasedontheIPCCCMIP3projectionsimulations.Theprojectedprecipitationinthepresentapproachexhibitedaconsiderabledifferencefromthemultimodelensemblemean(MME)ofIPCCAR4projectionsimulations,andalsofromtheMMEofthemodelsthatignoretheeffectofBC.Inparticular,thepresentprojectionexhibitedadryanomalyoverthecentralIndianPeninsula,sandwichedbetweenwetconditionsonthesouthernandnorthernsidesofPakistanandIndia,ratherthanhomogeneouswetconditionsasseenintheMMEofIPCCAR4.Thus,thespatialpatternofSouthAsiansummerrainfallinthefuturemaybemorecomplicatedthanpreviouslythought.

简介：英国高考A-level证书对学生考试成绩的评定半个多世纪以来不断发展完善,逐步形成了当前的A＊—E和U共7个等级。英国高考A-Level证书等级体系的改革呈现出四大特点：拉长A-Level等级体系,为高校录取提供更大的区分度;考试次数由一年多次考试转变为＂一考定终身＂;设置统一分数量表,实行等级转换制;教师对考生A-Level成绩的估分,作为等级评定程序中的重要部分。A-level等级体系对我国新高考改革的启示,即合理划分高考成绩评定等级数量,构建起科学的等级链;减少重复考试次数,将多次等级考试转变为＂一次性考试＂;设置高考统一分数和等级转换系统,增加考试的信度和效度。

简介：密文政策基于属性的可查找的加密(CP-ABSE)能为数据分享和检索完成有细密纹理的存取控制，并且安全deduplication能由消除副本拷贝节省存储空间。然而，有很少策划支持可查找的加密和安全deduplication。在这份报纸，支持安全块级的deduplication的一个大宇宙CP-ABSE计划在混合的云机制下面被建议。在建议计划，在密文被插入到花蕾过滤器树(BFT)以后，私人云能由匹配标签高效地执行有细密纹理的deduplication，并且公共的云能用同构的可查找的方法并且关键词匹配高效地寻找。最后，建议计划能在选择分发攻击下面完成隐私块级(PRV-CDA-B)固定deduplication并且隐藏火柴(MC)可查找的安全。与存在计划相比，建议计划在同时支持有细密纹理的存取控制，块级的deduplication和有效搜索有优点。

简介：

简介：可转换债券是一种混合型金融衍生工具。它把相应的股票看涨期权内嵌在传统的公司债券之中，具有债券和股票的双重性质，因而可转债的定价问题逐渐为企业和投资者所关注。本文基于B—S期权定价模型对我国可转债的定价进行实证研究。并通过理论价格与实际价格的比对，分析B—S期权定价模型在我国可转债定价中的适用性，并且针对我国可转债存在的一些问题提出相关的建议。

简介：从编排、种类、内容及功能等方面对英国CIEA—level生物学教材的栏目设置进行分析，总结出其栏目设置精简、凸显重要概念和注重培养学生生物学核心素养等特点。

简介：一个光陷井能在在一个光洞嵌入的一个ultracold原子系统由一块轻地被印，是众所周知的，并且由三块不同的协调的地开车。在光洞共存的三块地中，有一块强烈控制地，经由创造与联系Rabi频率的平方成正比的力量的一个周期的光栅栏的导致electromagnetically的透明性，和另一块地导致巨大的克尔非线性。在这，管理探查域的繁殖的非线性的方程的工作elliptic-soliton答案被考虑，与形成有明确的量数字的一个分离系列的光soliton火车的可能的产生上的强调。这个问题被对待假定周期的光栅栏的二种不同类型并且考虑否定并且detunings(detuning在上面或在回声下面)的正号。结果预言在自我阶段和跨阶段的调整非线性之间的比赛产生不同的量数字描绘的时间的soliton火车模式的一个富有的家庭。

简介：Wepresentthesolidmodeleditdistance(SMED),apowerfulandflexibleparadigmforexploitingshapesimilaritiesamongstCADmodels.ItisdesignedtomeasurethemagnitudeofdistortionsbetweentwoCADmodelsinboundaryrepresentation(B-rep).Wegivetheformaldefinitionbyanalogywithgrapheditdistance,oneofthemostpopulargraphmatchingmethods.Toavoidtheexpensivecomputationalcostpotentiallycausedbyexactcomputation,anapproximateprocedurebasedonthealignmentoflocalstructuresetsisprovidedinaddition.Inordertoverifytheflexibility,wemakeintensiveinvestigationsonthreetypicalapplicationsinmanufacturingindustry,anddescribehowourmethodcanbeadaptedtomeetthevariousrequirements.Furthermore,amultilevelmethodisproposedtomakefurtherimprovementsofthepresentedalgorithmonbotheffectivenessandefficiency,inwhichthemodelsarehierarchicallysegmentedintotheconfigurationsoffeatures.ExperimentresultsshowthatSMEDservesasareasonablemeasurementofshapesimilarityforCADmodels,andtheproposedapproachprovidesremarkableperformanceonareal-worldCADmodeldatabase.

简介：Ablackphosphorus（BP）saturableabsorber（SA）solutionwithdifferentconcentrations（1.0and0.5mg/ml）isfabricatedwiththeliquid-phaseexfoliationmethod.ByusingtheBP-SA,acompactdiode-pumpedpassivelyQ-switchedNd：YV04laserisdemonstrated.OnereflectingBragggratingsisusedastheoutputcouplerformodeselection.ByinsertingthoseBP-SAsolutionsinthelasercavity,themaximumsinglelongitudemode,Q-switchedoutputpowersof126mWat692.5kHzand149mWat630.3kHzareachievedatthepumppowerof8.0W,correspondingtothepulsedurationsof144nsand196ns,respectively.Moreover,longitudinal-modecharacteristicsofQ-switchedoutputlaserindifferentopticalcavitylengthsbasedontwo-kindBP-SAsolutionconcentrationsareinvestigated.OurresultsshowthatBP-SAcouldalsobedevelopedasaneffectiveSAfortheQ-switched,singlelongitudinalmodepulselaser.

简介：WestudythefeatureofmediachangesbeneaththeZipingpureservoiranddiscusstheprocessofpermeationwiththewaterlevelriseandfallofthereservoirfromJanuary2005toJanuary2008fromambientnoisecrosscorrelationbyusingcontinuousseismicdatarecordedbythestationsofZipingpuseismicnetworkandYZPstation.Amoving-windowcross-spectrumtechniquehasbeenusedtocalculatetherelativeseismicvelocitychangesbetweenstationpairs.Resultsrevealedanobviousrelationshipbetweenrelativeseismicvelocity,andthewaterlevelchangeswithatimedelaythatmaybecausedbypermeationduringthreemainimpoundmentsandtwolargescaledisemboguements.Impoundmentgeneratesafastandlargeimpactonthesuperficiallayer,andthechangesofseismicvelocityistheresultofincreasedpressureandpermeationduringtheimpoundment.Atthefirstimpoundment,themaineffectfactorispressure.Duringthenexttwoprocessofimpoundment,permeationbecomesthemaineffectfactor,affectingthefaultatadepthofabout8km.

简介：Benignprostatichyperplasia(BPH)isanage-relateddiseaseofunknownetiology,characterizedbyprostaticenlargementcoincidentwithdistinctalterationsintissuehistology.Inthepresentstudy,weinvestigatedwhethertriptolidecanpreventtestosterone-inducedprostatichyperplasiainrats.Castrationwasperformedviathescrotalrouteafterurethaneaesthesia.BPHwasinducedinexperimentalgroupsbydailysubcutaneousinjectionsoftestosteronepropionate(TP)fortwoweeks.Triptolidewasadministereddailybyoralgavageatadoseof100and50μg×kg~(-1)for2weeks,alongwiththeTPinjections.Onday14,theanimalswerehumanelykilledbycervicaldislocationafteraesthesia.Prostateswereexcised,weighed,andusedforhistologicalstudies.Testosteroneanddihydrotestosterone(DHT)levelsinserumandprostateweremeasured.Theresultsshowedthattriptolidesignificantlyreducedtheprostateweight,andthetestosteroneandDHTlevelsinboththeserumandprostate.HistopathologicalexaminationalsoshowedthattriptolidetreatmentsuppressedTP-inducedprostatichyperplasia.Inconclusion,triptolideeffectivelyinhibitsthedevelopmentofBPHinducedbytestosteroneinaratmodel.

简介：Inthisstudy,weinvestigatetheinfluenceofdopingonthechargetransferanddevicecharacteristicsparametersinthebulkheterojunctionsolarcellsbasedonpoly(3-hexylthiophene)(P3HT)andamethanofuUerenederivative(PCBM).Organicsemiconductorsarealsoknowntobenotpureandtheyhavedefectsandimpurities,someofthemarebeingchargedandactasp-typeorn-typedopants.Calculationsofthesolarcellcharacteristicsparametersversusthep-dopinglevelhavebeendoneatthreedifferentn-dopings(N_d)thatconsistof5×10~(17)cm~(-3),10~(18)cm~(-3),and5×10~(18)cm~(-3).Weperformtheanalysisofthedopingconcentrationthroughthedrift-diffusionmodel,andcalculatethecurrentandvoltagedopingdependency.Wefindthatatthreedifferentn-dopantlevels,optimump-typedopingisaboutN_p=6×10~(18)cm~(-3).Simulationresultshaveshownthatbyincreasingdopinglevel,V_(oc)monotonicallyincreasesbydoping.CellefficiencyreachesitsmaximumatsomewhathigherdopingasFFhasitspeakatN_p=3×10~(18)cm~(-3).Moreover,thispaperdemonstratesthattheoptimumvalueforthep-dopingisaboutN_p=6×10~(18)cm~(-3)andoptimumvalueforn-dopantisN_d=10~(18)cm~(-3),respectively.Thesimulatedresultsconfirmthatdopingconsiderablyaffectstheperformanceoforganicsolarcells.