简介：Inrecentyears,therearemanycrimesrelateddrugfraudoccuringinChinaandmanyexpertsthinkthatthemaincauseisthatChinaFoodandDrugAdministration(CFDA)adoptsannouncedinspection(AI).Inordertocircumventthisdifficulty,CFDAhasexploitedunannouncedinspection(UI)since2014.Inthispaper,theauthorsstudytheproblemofwhichoneperformsbetter,AIorUI.Specifically,theauthorsconsiderasupervisor,whichdecidestheinspectionapproach,inspectionstrengthandpunishmenttoforcethefirmtoputself-inspectionefforttomeettherequirementsofGoodManufacturingPractice,andafirm,whichproducesadruganddecidesitsself-inspectioneffort.Theauthorsusegametheorytomodelthisproblem,characterizetheequilibriumpoliciesunderAI,andcomparetheeffectsofthetwoapproachesonpreventingdrugfraudundercompleteandincompleteinformation.Theresultsshowthatunderthecompleteinformation,UIperformsbetterifthefirm'stechnicallevelandtheinspectioncostarelowandAIperformsbetterotherwise.Whenthesupervisordoesn'tknowthefirm'stechnicallevel,ifthelowtechnicallevelishigh,AIperformsbetter.Otherwise,UIperformsbetteriftheinspectioncostislowandAIperformsbetteriftheinspectioncostishigh.

简介：Inthispaper,weconstructanoperatorwhichhasalgebraicprecisionofpointedorderandapproximatestofC[0,1]uniformlyon[0,1].

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简介：摘要：在英语考试中，英语写作占据的分值较大，在高考中，每一分我们都要争取，要重视。定语从句作为重要的知识点，在英文写作中出现的次数比较高。但是在日常的学习和应用过程中，有一部分同伴在学习和应用中经常出现错误，导致作文失分。因此，本文就针对定语从句在写作中的应用进行分析和论述，希望可以对各位同伴的写作带来一些帮助。

简介：punitive disciplines for their children to follow. They are also rejecting to children.　 My parents used authoritarian parenting in my family. There are three children in my family. My mother used the same style to us all. I don’t think it is best for parents or caretakers to use the same style,children are different from each other. It’s better for them to use eclectic parenting style. We didn’t like authoritarian parenting,Good parenting can help parents to make good emotional kids and have a happy family. The authoritative style balances clear

简介：AbstractBackground:The fetal growth charts in widest use in China were published by Hadlock >35 years ago and were established on data from several hundred of American pregnant women. After that, >100 fetal growth charts were published around the world. We attempted to assess the impact of applying the long-standing Hadlock charts and other charts in a Chinese population and to compare their ability to predict newborn small for gestational age (SGA).Methods:For this retrospective observational study, we reviewed all pregnant women (n = 106,455) who booked prenatal care with ultrasound measurements for fetal biometry at the Shenzhen Maternity and Child Healthcare Hospital between 2012 and 2019. A fractional polynomial regression model was applied to generate Shenzhen fetal growth chart ranges for head circumference (HC), biparietal diameter (BPD), abdominal circumference (AC), and femur length (FL). The differences between Shenzhen charts and published charts were quantified by calculating the Z-score. The impact of applying these published charts was quantified by calculating the proportions of fetuses with biometric measurements below the 3rd centile of these charts. The sensitivity and area under the receiver operating characteristic curves of published charts to predict neonatal SGA (birthweight <10th centile) were assessed.Results:Following selection, 169,980 scans of fetal biometry contributed by 41,032 pregnancies with reliable gestational age were analyzed. When using Hadlock references (<3rd centile), the proportions of small heads and short femurs were as high as 8.9% and 6.6% in late gestation, respectively. The INTERGROWTH-21st standards matched those of our observed curves better than other charts, in particular for fat-free biometry (HC and FL). When using AC<10th centile, all of these references were poor at predicting neonatal SGA.Conclusions:Applying long-standing Hadlock references could misclassify a large proportion of fetuses as SGA. INTERGROWTH-21st standard appears to be a safe option in China. For fat-based biometry, AC, a reference based on the Chinese population is needed. In addition, when applying published charts, particular care should be taken due to the discrepancy of measurement methods.

简介：Inthispaper,westudythedierentiabilityofsolutionsontheboundaryforequationsoftypeLλu=θ2uθx2+jxj2λθ2uθy2=f(x;y),whererisanarbitrarypositivenumber.ByintroducingapropermetricthatisrelatedtotheellipticoperatorLλ,weprovethedierentiabilityontheboundarywhensomewell-posedboundaryconditionsaresatisfied.Themaindicultyistheconstructionofnewbarrierfunctionsinthisarticle.

简介：Thispaperaimsatdiscoveringwhatamongcommunicativeability,linguisticabilityandwritingstrategymostaffectsEnglishwritingabilityofnon-EnglishmajorsatChina’scolleges.Throughtheanalysisofcommunicativeproficienciesandlinguisticproficienciesoffoursubjectsobtainedfromtheircompositions,itisfoundoutthatneithertheircommunicativeabilitynortheirlinguisticabilityisthekeyfactor.ThustheauthorconcludesthatwritingstrategymaybecrucialtoEnglishwriting.Thepreliminaryconclusionisfurtherconfirmedwithquestionnaires.

简介：because communication about emotions can serve as a way for parents to teach their children values.,Authoritative parents can understand their children’s feeling and teach them how to regulate them. They often help them to find appropriate outlets to solve problems. John Gottman said,because that simply makes children distrust their feelings. He said kid’s emotions do not disappear when parents say

简介：一、which引导的非限制性定语从句，既可指前面的名词，又可指整个主句，它通常表示前面提到过的情况或事实，而不表示后面提到的。as引导的非限制性定语从句只能指整个主句，它涉及的情况既可是前面提到的，也可是将要提到的。

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简介：先请看下面两个句子:Themigrantscomeforthefewavailablejobs,whichareusuallynobetterthanonestheyfled.移民可找到的工作寥寥无几,这些工作与他们原来所抛弃的工作同样恶劣。AscanbeseeninthecaseofSurtsey,volca-noesgivewarningsoftheiractivity.正象人们从瑟尔塞岛的形成所看到的那样,火山向人们预告其活动情况。这两个句子中的as和which都作关系代词,引导非限制性定语从句。这时,它们在用法上有何区别呢?一般语法书对这一问题的论述也不多见。因此,本文试从句法和语义功能入手,结合例句,对as和which的这一用法作一比较,以就教于各位同仁。一、相同点1.as和which都可在从句中作主语,代表主

简介：在定语从句中，which和that在指代事物时，一般可以互换使用，但并非在任何情况下都是这样，这里介绍宜用that，而不宜用which的情况。

简介：which与as一样，都可以引导非限制性定语从句，它们既有相同之处，也有差别，因此在实际运用中容易混淆。它们的某些用法在高考中也会考查。故本文拟就它们引导非限制性定语从句时用法之异同作以区别，并辅之以高考真题为练习。

简介：从认知识解的角度分析了定语从句中关系副词与“介词＋which”结构转换所造成的认知心理差异，表现为两者语义分布层级不同，“介词＋which”结构的语义精确程度和详细程度比关系副词更精细，对先行词的修饰限制属性更强；两者突显侧面不同，关系副词突显关系性射体，“介词＋which”结构突显名词的侧面；另外，两者视角不同，关系副词落在主句成分与从句的关系上，“介词＂4-which”结构落在先行词上，突显先行词的事体属性。通过深入分析调查，该研究进一步揭示了关系副词与“介词＋which”结构转换的认知理据。

简介：Whenthehigh-pressuregasisexhaustedtothevacuumchamberfromthenozzle,theunderexpandedsupersonicjetcontainedwiththeMachdiskisgenerallyformed.Theeventualpurposeofthisstudyistoclarifytheunsteadyphenomenonoftheunderexpandedfreejetwhenthebackpressurecontinuouslychangeswithtime.ThecharacteristicoftheMachdiskhasbeenclarifiedinconsiderationofthediameterandpositionofitbythenumericalanalysisinthispaper.ThesonicjetoftheexitMachnumberMe=1isassumedandtheaxisymmetricconservationalequationissolvedbytheTVDmethodinthenumericalcalculation.ThediameterandpositionoftheMachdiskdifferswiththeresultsofasteadyjetandtheinfluenceonthecontinuouslychangingofthebackpressureisevidencedfromthecomparisonwiththecaseofsteadysupersonicjet.

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简介：OnAug.8,2017,anMS7.0earthquakestruckJiuzhaigou,acountyofSichuanprovince,China.Anumberofinvestigationsandstudieshavebeenconducted,someofwhichinvolvedlocalvelocitymodels.However,thesuitabilityofthesemodelshasnotbeenproperlyaddressed.Herewecollect11already-existingmodels,includingthoseusedinstudiesofthe2017MS7.0Jiuzhaigouearthquake,choose10localstationssurroundingtheearthquake,andemploythesametechnique(TRIT)torelocatethehypocenter.Andfurthermore,wechooseamoresuitablemodelfromthe11already-existedmodelsbyanalyzingtherelocationprocessandtherelocatedresultsforreasonability.Finally,ourconclusionisthatthemodelFang2018ismoresuitableandthehypocenterparameters,103.801°E,33.192°Nand15.8kmforlongitude,latitudeanddepth,respectively,and2017-08-0813:19:46.66foritsorigintime,basedonthismodelshouldberecommendedforthe2017MS7.0Jiuzhaigouearthquake.