简介：在这份调查报纸，我们在边界元素方法(BEM)的hp版本的最近的开发报导。作为我们认为弱单个的模型问题和平面、开的表面上的第一种类型的hypersingular积分方程。我们证明Galerkin答案(在几何网孔上与hp版本计算了)向不可分的方程的准确答案快指数地收敛。一个hp适应的算法被给，hp版本BEM的实现为性恶的边界元素僵硬矩阵和有效preconditioners的选择被讨论。我们也为在接触条件仅仅在Gauss-Lobatto点的分离集合上被强制的线性弹性解决Signorini接触问题评论hp版本BEM的使用。数字结果被介绍它加重理论结果。[从作者抽象]

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简介：ThisarticledescribesalocalerrorestimatorforGlimm'sschemeforhyperbolicsystemsofconservationlawsandusesittoreplacetheusualrandomchoiceinGlimm'sschemebyanoptimalchoice.Asaby-productofthelocalerrorestimator,theprocedureprovidesaglobalerrorestimatorthatisshownnumericallytobeaveryaccurateestimateoftheerrorinL1(R)foralltimes.Althoughthereispartialmathematicalevidencefortheerrorestimatorproposed,atthisstagetheerrorestimatormustbeconsideredad-hoc.Nonetheless,theerrorestimatorissimpletocompute,relativelyinexpensive,withoutadjustableparametersandatleastasaccurateasotherexistingerrorestimators.Numericalexperimentsin1-DforBurgers'equationandforEuler'ssystemareperformedtomeasuretheasymptoticaccuracyoftheresultingschemeandoftheerrorestimator.

简介：Atextbook,Economic,SocialandCulturalRights(secondrevisededition),hasbeentranslatedintoChineseunderthesponsorshipoftheChinaSocietyforHumanRightsStudiesandpublishedbytheSichuanPeople’sPublishingHouse.

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简介：AbstractThe pathogenesis of melasma is believed to be related to heredity, sun exposure, sex hormones, and other factors. The mechanisms underlying the development of melasma include increased melanin synthesis, vascular proliferation within the skin lesions, inflammation, and skin barrier dysfunction. The diagnosis of melasma is mainly based on clinical manifestations and noninvasive techniques. Coupling with recent research progress in melasma, the present consensus comprehensively elaborates the etiology, pathogenesis, clinical manifestations, staging, classification, diagnosis, and treatment of melasma to improve the diagnostic and therapeutic skills of Chinese dermatologists.

简介：Inthisnote,apositiveanswerforaquestionposedbyS.Batesin1992isgiven,i.e.thereexistsaC^∞rank-1mapf:I^2→R^1suchthatf(A)hasnonemptyinteriorforsomesubsetA(∪→)I^2ofcriticalpointswithfiniteHausdorffdimension.ItissaytheMorsecriticalitytheoremcannotbegeneralizedtoinfinite-dimensionalspaces.

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简介：Background：TheGlobalPhysicalActivityQuestionnaire（GPAQ）hasbeenusedtomeasurephysicalactivity（PA）andsedentarytimeinFrance,butnostudyhasassesseditspsychometricproperties.ThisstudyaimedtocomparethereliabilityaswellascriterionandconcurrentvalidityoftheFrenchversionoftheGPAQwiththeFrenchInternationalPhysicalActivityQuestionnairelongform（IPAQ-LF）anduseofanaccelerometerinageneraladultpopulation.Methods：Weincluded92participants（studentsorstaff）fromtheMedicineCampusattheUniversityofLorraine,Nancy（north-easternFrance）.TheFrenchGPAQwascompletedtwice,7daysapart,tostudytest-retestreliability.TheIPAQ-LFwasusedtoassessconcurrentvalidityoftheGPAQ,andparticipantsworeanaccelerometer（ActiGraphGT3X＋）for7daystostudycriterionvalidity.ReliabilityaswellasconcurrentandcriterionvalidityoftheGPAQweretestedbytheintraclasscorrelationcoefficient（ICC）,Spearmancorrelationcoefficientforquantitativevariables,andKappaandPhicoefficientsforqualitativevariables.BothconcurrentandcriterionvalidityofGPAQwereassessedbyBland-Altmanplots.Results：TheGPAQshowedpoortogoodreliability（ICC=0.37-0.94;Kappa=0.50-0.62）andconcurrentvalidity（Spearmanr=0.41-0.86）,butonlypoorcriterionvalidity（Spearmanr=-0.22-0.42）.LimitsofagreementfortheGPAQandaccelerometerwerewide,withdifferencesbetween286.5min/weekand601.3min/week.Conclusion：TheFrenchversionoftheGPAQprovideslimitedbutacceptablereliabilityandvalidityforthemeasurementofPAandsedentarytime.ItmaybeusedforassessingPAandsedentarytimeinaFrenchadultpopulation.

简介：Usingthetechniqueofintegralwithinanorderedproduct(IWOP)ofoperatorsweshowthatthewavelettransformcanberecastedtoamatrixelementofsqueezing-displacingoperatorbetweenthemotherwaveletstatevectorandthestatevectortobetransformedinthecontextofquantummechanics.Inthiswaymanyquantumopticalstates'wavelettransformcanbeeasilyderived.

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简介：‘JournaloftheChineseRareEarthSo-ciety’hasbeenpublishedinChinesewithEnglishabstractssince1983.Ithasexpeditedthedevelopmentofrareearthresearch,technologyandapplicationsinChina,promotedtheacademicexchangeathomeandabroad.Inordertomakeitmoreaccessibletoforeignscientists,twoeditions(ChineseandEnglish)willbepublished,startingfromVolume8,1990.TheEnglishVersionhasfourissuesan-nually,reportingoriginalresearchesintheformofarticles,notesandcommuni-cations.AnindexofrareEarthbiblio-graphywillbeincludedineachissue.Mini-reviewsontopicsofcurrentin-terestandbriefintroductionofrareearthresearchinstitutes,laboratories,Factories,companiesanddistinguished

简介：更多色彩、更加环保、更省成本Believeitonnot!2008年5月27日,惠普在新加坡举办了2008年度的HPPrintWatchLive研讨会,会上发布了诸多打印机、耗材与墨盒的新技术新产品。本次活动以Color(色彩)、Green(环保)和Value&Choice(成本)为主轴,我们不仅仅了解到惠普最新、最快速的打印机产品,还近距离了解到创新的打印技术如何帮助用户提高效率节省成本,以及针对环保的举措。

简介：Inthispaper,weinvestigateahorizontalLaplacianversionoftheclampedplateproblemonCarnotgroupsandobtainsomeuniversalinequalities.Furthermore,forthelowerordereigenvaluesofthiseigenvalueproblemoncarnotgroups,wealsogivesomeuniversalinequalities.

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简介：Thepaperinvestigatestheh-pversionoftheinfiniteelementmethod.Anexponentialconvergencecanbeabtainedbyasmallamountofcomputingwork.