简介：本期给大家带来的是来自四川省青神县青神中学高10级（6）班的罗梦同学获得一等奖的作文，看看她是如何组句谋篇的吧。

简介：本期给大家带来的是来自四川省青神县青神中学高10级（6）班的罗梦同学的一等奖作文，看看她是如何组句谋篇的吧。

简介：本期给大家带来的是来自四川省青神县青神中学高10级（6）班的罗梦同学的一等奖作文，看看她是如何组句谋篇的吧。

简介：Manyofusbelievethataperson'smindbecomeslessactiveashegrowsolder.Butthisisnot.true,accordingtoDr.LissyF.Jarvik,professorofpsychiatry(精神病学)attheUniversityofCalifomia,LosAngeles,andaboardmemberoftheNewCenterforAgingattheVeteransHospital.Shehasstudiedthementalfunctioningofagingpersonforseveralyears.

简介：Ashopkeeperwhosellsgoodsformorethanwhathepaidforthemmakesaprofitonthetransaction.Ontheotherhand,onewhosellsgoodsforlessthanwhathepaidforthemmakesalossonthetransaction.Theprofit(orloss)madeonatransactionisoftenexpressedasapercentageofthecostprice(ie.thepricepaidbytheshopkeeperfortheitem).

简介：TheanalysisofcelllossratesinanATMMuxwithlossprioritiesisanimportantprobleminthe-studyoftrafficcontrolinATMnetworks.Inthispaper,thelossratesofthecellswithdifferentprioritiesinanATMMuxareanalyzedbyapproximatingtheactualinputprocesswithtwo-stateMMDPandfluidflowtechnique,andtheanalyticalexpressionsoftherelationbetweenthelossratesandthebuffersizeareobtained.Simulationshowsthattheapproachissullicientlyaccurateforapplications.

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简介：AtypeofsilicondetectorknownasAXUV(absoluteextremeultraviolet)photodiodesissuccessfullyusedtomeasuretheradiatedpowerinEAST.Thedetectorischaracterizedbycompactstructure,fasttemporalresponse(<0.5s)andflatspectralsensitivityintherangefromultra-violettoX-ray.Two16-channelAXUVarraysareinstalledinEASTtoviewthewholepoloidalcross-sectionofplasma.Basedonthediagnosticsystem,typicalradiationdistributionsforbothlimiteranddivertorplasmaareobtainedandcompared.Asdivertordetachmentoccurs,theradiationdistributioninX-pointregionisobservedtovarydistinctly.Thetotalradiationpowerlossesindischargeswithdifferentplasmaparametersarebrieflyanalyzed.

简介：考虑在有m的无限的供应下面的项目挑选的定价n的问题照看了买主，其各个至多对感兴趣项目的k。目标是与利润额p定价每个项目1，p2，，pn以便最大化全面利润。当每个项目上的价格一定在它的边缘费用上面时，由Balcan和Blum有一个O(k)近似算法；即，每pi>0。当卖主被允许在他们的边缘费用下面定价一些项目时，我们调查上述问题。它被Balcan等显示出。由一些下面的项目花费了的定价，卖主能可能增加最大的利润由(木头n)时间。以低价格卖刺激另外的有利出售的这些项目通常被称为损失领导人。当一些项目能在费用下面被定价时，什么样的近似保证是可完成的，是不清楚的。理解这个问题被Balcan和Blum作为一个开的问题提出。在这份报纸，我们为定价损失领导人的问题给强壮的否定结果。我们证明那假设唯一的比赛推测(UGC)，为有在甚至当每个顾客至多是感兴趣的在里面时，允许的费用下面的价格的条款定价没有经常的近似算法三个项目。概念上，尽管由在他们的边缘费用下面卖一些项目赚更多的钱是可能的，我们的结果显示那，那么做能是计算地难处理的。

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简介：Purpose:Tostudythecorrelationbetweenfunctionalandstructurallossinchronicglaucoma,asdetectedbyFrequencyDoublingTechnology(FDT)andHeilderbergRetinaTomograph(HRT).MaterialandMethods:60eyesof60patientswitheitherocularhypertensionorchronicopen-angleglaucomaunderwentvisualfieldtestingwithbothstandardautomated

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简介：Amethodfortheinversionofthetransmissionlossesforthebottomreflectionlossisproposedonthebasisofthetheoryofthesmooth-averagedsoundfield.Theprocedureoftheinversionisbasedonthecri-terionoftheleastsquareerrorinthetransmissionlossesbetweencalculationandmeasurement.ByusingtheGauss-Newtoniterativeapproach,thenon-linearleastsquarealoqrithmisequivalenttosolvingase-quenceoflinearedleastsquareproblems.ThephysicalcausesoftheinstabilityoftheinvertionproblemarediscussedandthestabilityisimprovedbymeansoftheLevenberg-Marquardtmethod.Bothnumericalsimulationswithnoiseandexperimentalresultsshowthattheinversionforthebottomreflectionlossofsmallgrazinganglehashighprecisionandthecertainperturbationinthemeasuredtransmissionlossesdoesnotleadtoseriousdeviationintheinversionresultofthebottomreflectionloss.

简介：Sincethe1970s,outcomestudiesforchildrenwithhearinglossexpandedfromfocusingonassessingauditoryawarenessandspeechperceptionskillstoevaluatinglanguageandspeechdevelopment.Sincetheearly2000s,themulti-centerlargescaleresearchsystematicallystudiedoutcomesintheareasofauditoryawareness,speech-perception,languagedevelopment,speechdevelopment,educationalachievements,cognitivedevelopment,andpsychosocialdevelopment.Thesestudiesadvocatedtheestablishmentofbaselineandregularfollow-upevaluationswithacomprehensiveframeworkcenteredonlanguagedevelopment.Recentresearchinterestsalsoincludeunderstandingthevastdifferencesinoutcomesforchildrenwithhearingloss,understandingtherelationshipsbetweenneurocognitivedevelopmentandlanguageacquisitioninchildrenwithhearingloss,andusingoutcomestudiestoguideevidence-basedclinicalpractice.AftertheestablishmentofstandardizedMandarinlanguageassessments,outcomesresearchinMainlandChinahasthepotentialtoexpandbeyondauditoryawarenessandspeechperceptionstudies.

简介：Animpulseresponsetechniquehasbeeninvestigatedbyapplicationtotheopenscreensforobtainingsoundtransmissionloss.ThemeasurementsofsuchscreensaccordingtoISO140werealsopresented.ThepredictedresultscalculatedbyamodelwhichisbasedonHuygen’sprincipleandKirchhoff’sformulationhaveshowngoodagreementswiththeresultsobtainedbyimpulsemethod.Themethodrequiresnospecialistacousticfacilitiesandmeasurementsystemscanbeportable.

简介：Theeffectsofheatlossonthestructureoflaminarflamelets,whicharetheconstitutiveelementsofturbulentflamesunderthemostcommonoperatingconditions,areinvestigatedfortypicalaeronauticalgas-turbineoperatingconditionsattake-off.Themagnitudeofheatlossisquantifiedviathe"enthalpydefect"measuredwithrespecttoanadiabaticflame.Aproceduretogeneratelaminarflameletswithanassignedenthalpydefectattheboundariesisdevisedandappliedtononpremixedpropane/airflames,aspropanereproducestheessentialfeaturesofhigherhydrocarboncombustion.Itisfound,contrarytocommonlyheldbeliefs,thattheenthalpydefecthasasignificanteffectontheconcentrationnotonlyofminorspecies,butalsoofmainreactionproducts.Sucheffectsarefoundingeneraltobemorepronouncedforfuel-richconditions.Animpactisanticipatedontheformationrateofnitricoxides.Theeffectsofscalardissipationratearealsodiscussed.

简介：目的:对现有的关于研究水合状态对运动员身体活动能力影响的证据进行批判性分析。方法:从多个数据库检索获取符合纳入标准的文献,随后采用唐斯和布莱克协议(DownsandBlackprotocol)对纳入文献进行批判性评估。结果:9篇文章符合入选标准,平均79%在方法论质量上代表高标准的研究。结论:证据表明在持续30s以上的活动中,脱水状态在身体表现中有消极作用:然而在少于15s的持续运动中,脱水状态对身体表现并无显著影响。

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