当前位置 —论文—写论文— 范文

关于统计学相关论文范文集,与自考本科毕业文范文相关论文参考文献格式

本论文是一篇关于统计学相关论文参考文献格式,关于自考本科毕业文范文相关研究生毕业论文开题报告范文。免费优秀的关于统计学及论文及统计分析方面论文范文资料,适合统计学论文写作的大学硕士及本科毕业论文开题报告范文和学术职称论文参考文献下载。

998,Seielstadetal.1998,Hammeretal.2001).However,inthepresentstudy,besidespatrilocalityitseemsthatdiversepaternallineagesandasharedmaternalgenepoolhavecontributedsignificantlytotheobserveddifferencesinY-chromosome,autosomeandmtDNAFstvaluesinthethreemunities.

IncontrasttotheY-chromosomeSTRs,themoreancientY-chromosomelineagesrepresentedbyUEPsoccuratquitesimilarfrequenciesinthethreepopulations,with80-90%ofthehaplotypesinmon,suggestingthattheyhavesharedmaleoriginsonanevolutionarytimescale.ThehighfrequencyoftheM17haplotypeisinkeepingwithaCentralAsianorigin,withfrequenciessimilartothoseoftheAltaic/Turkic-speakingUzbeksandUygurs(Wellsetal.2001).ThefrequencydecreaseseastwardacrossSiberiaandMongolia,withalowfrequencyinNorthEastAsia(Hammeretal.2001,Karafetetal.2001,Wellsetal.2001).AnanalogueoftheM17haplotype(SRY-1532alsoknownasSRY10831)isalsoseenathighfrequencyinEasternIranianpopulations,withthesuggestionthatithadspreadfromCentralAsiaintomodernIran,PakistanandnorthernIndia(Quintana-Murcietal.2001,McElreavey&,Quintana-Murci,2002).ThisisconsistentwiththeclaimedhistoricaloriginsofMuslimminoritiesinPRChina(Gladney1996,WongandDajani1988),butsuggeststhattheBo'anandDongxiangacquiredtheMongolianlanguagewithrelativelylittleMongoliangeicadmixture.

ThemtDNAprofilesinthethreeMuslimmunitieswereparabletoHanChineseandCentralAsianpopulations,inparticulartheT-Ctransitionatposition16223andtheC-Ttransitionatposition16362(Comasetal.1998).TheaveragemtDNAnucleotidediversityindexforthethreepopulationswas0.017whichissimilartothosereportedinEasternAsian(0.017),Mongolians(0.018)andTurkish(0.015)populations(Comasetal.1998).Thelevelsofnucleotidediversitieswithineachmunitywerehigherthanexpectedforisolatedendogamousmunities,perhapsreflectingtheprevalenceofthetwomonmutationsatpositions16223and16362.

以上各段从常染色体,Y染色体和线粒体3个角度对研究结果进行论述,并对研究结果出科学解释.

Insummary,analysisoftheUEPsindicatesthatthethreeMuslimpopulations,theSalar,Bo'anandDongxiang,sharedmonancientorigins,buttheY-chromosomeSTRdatashowthattheirmalegenepoolsweresignificantalteredbysubsequenthistoricaleventsresultingintheestablishmentofmunity-specificY-chromosomeSTRhaplotypes.Incontrast,theclosegeicdistancesbetweenthemtDNAprofilesofthethreemunitiessuggestthattheysharedverysimilarfemalefoundergenepools,mostlyChineseHanfemales.Onlydetaileddemographichistoriesforthethreepopulationscanidentifythemaindrivingforcesforthedifferencesbetweentheautosomes,mtDNAandY-chromosomes.ThisisespeciallypertinentinChineseMuslimpopulationsgiventhefounderhypothesesassociatedwiththeY-chromosomeandmtDNAlineages.HistoricalaccountssuggestthatitwaspredominantlythetransitofmalesintoChinaandtheirpartialincorporationintoChinesesocietywhichledtotheformationofthemajorityofpresent-dayethnicminorities.BesidestheobservedmongeicbackgroundofancientUEPs,thesehistoricalsourcesarevalidatedbythehighheterogeneityoftheY-chromosomalSTRsandthecohesivefemalelineagesofthethreeMuslimpopulations.

本段是对各研究结果的一个总结,常染色有很高的近亲同源度,线粒体遗传在3个穆斯林民族之间以及与汉族之间有很强的同源性.与之相对应,每个少数民族都有自己独特的Y染色体单倍型始祖现象.

第二节英文科技论的文题

是给论文取的名字.它是作者表达论文的特定思想内容,反映研究范围和深度的最鲜明,最精练的概括,也是最恰当,最简明的逻辑组合,是读者认识全文的窗口.读者根据所阅读的文题,即可决定是否需要阅读全文.因此论文的题目需要起到画龙点睛,一语道破的作用.

自考本科毕业文范文参考属性评定
有关论文范文主题研究:	关于统计学的论文范文资料	大学生适用:	硕士学位论文、学位论文
相关参考文献下载数量:	70	写作解决问题:	毕业论文怎么写
毕业论文开题报告:	标准论文格式、论文目录	职称论文适用:	期刊目录、职称评副高
所属大学生专业类别:	毕业论文怎么写	论文题目推荐度:	最新题目

一般英文文题不超过10个词,或100个书写符号(包括间隔在内).可以是以目的和对象为主,也可以是以方法,结果或论点为主,以文题和内容相符合为原则.

文题有两忌:一是空泛,二是繁琐.要避免使用笼统,空洞,模棱两可,夸张,华而不实以及与同类论文相雷同的字眼.此外,许多作者习惯于用"研究","观察","体会","探讨"等词语,或把病例数列出.其实,除特殊情况外,这些一般都是不必要的.另外,还应尽量少用副词,并且避免使用系列论文的形式,如:"研究之一","研究之二"等.

文题的格式有几点要注意:①尽可能不用简称,缩写词,若一定要用时,应以常用并含义确切者为限,如CHD(冠心病),DNA,CT等,②10以下数字用英文,10以上数字用阿拉伯字,③尽可能不用标点符号.

题目不需要冗长,应当言简意赅.用最简练的语言写出令人印象深刻的题目,这样才能鼓励读者继续读下去并告诉他们这篇文章正是他们寻找的文献.

有时可根据需要采用具有完整结构的句式,如Abdominalultrasound-guidedembryotransferimprovesclinicalpregnancyratesafterin-vitrofertilization:experiencesfrom330casesofclinicalinvestigations(LiRetal.JournalofAssistedReproductionandGeics.2005).1.准确ccuracy)将题目"Evaluationofhealth-relatedqualityoflifeamonghypertensivepatientsinaruralarea"改为"Evaluationofhealth-relatedqualityoflifeamonghypertensivepatientsinaruralarea,PRChina"(LiangXYetal.JournalofHumanHypertension.2006)后,更加明确地强调了研究的现场是在中国,因此后者要比前者更准确.

为确保题目的含义准确,应尽量避免使用非定量的,含义不明的词,如

上一页 1 2 3 4 5 6 7 8 9 10 下一页