简介：Theresultsofastudyonthekeytechnologyofusingshellsand,akindofseasand,asbackfillforseareclamationaredescribedbriefly.Laboratorytestsshowthatthephysicalandmechanicalpropertiesofshellsandareasgoodasnormalquartzsand.Basedonthechemicaltestanddurabilitytestofshellsanditcouldbeconcludedthattheinfluenceofcorrosionofshellsandbyacidrainandseawatermightbeignoredintheevaluationofthesafetyanddurabilityoftheengineeringproject.Theresultsoffieldimprovementtestsshowthatthebearingcapacityofshellsandbackfillfoundationismorethan200kPaaftervibroflotationimprovementordynamiccompactionimprovement.Theshellsandisagoodbackfillmaterialforseareclamation.

简介：Thedynamictorsionalbucklingandpost-bucklingofelasto-plasticcircularcylindricalshellisstudied.BytheusageoftheBodner-Partomconstitutiverelation,thepresentvisco-plasticproblemistreat-edasanorthotropicelasticproblem.Basedonthenonlinearlargedeflectionshelltherory,thegoverningdynamicbucklingequationissolvedbytheRunge-Kuttamethod,andthecriticalbucklingstressisdeter-minedbytheB-Rcriterion.Thepresentpaperismainlyfocusedontheimperfectionsensitivity,thestrainratesensitivity,andthedynamicpost-bucklingcharactersfortheshellloadeddynamicallywithaconstantshearstrainrate.Numericalresultsshowthatthecriticalshearstressandimperfectionsensitivitywillin-creasewiththeincreaseofstrainrate.Itisfoundthattheelasticbucklingstressismoresensitivetoimperfectionthanthevisco-plasticbuckling.Thepresentresearchalsorevealssomedynamicpost-bucklingcharactersforthecylindricalshell,anditisshownthattheshellwillvibra

简介：海图语言和自然语言在语法、语义、语用等方面都具有隐喻映射关系。以现代语言学理论为指导，研究了普遍语法原则、转换生成规则等海图语言的语法规则，探讨了海图语言语法的两类隐喻关系，提出了语法同构性是语义解释一致性的基础，并以其作为构建通用海图语言系统的前提条件。

简介：生态语言学是生态学和语言学相互结合而形成的一个交叉学科。本文尝试从生态语言学的视角探讨舟山渔民号子作为一种濒危语言面临的生存现状,并就其保护措施给出建议和对策。通过分析其语境、用语者及其语篇,我们可以深入理解其中所涵盖的人海关系,为我们今后更好地传承海洋民俗文化和保护海洋生态环境提供有力的理论支撑。

简介：语言态度是近二十年来国内社会语言学的研究热点,但研究多集中在大城市,围绕语言政策对语言态度的影响,鲜有探讨语言态度的反作用。本文以生态语言学为理论视角,结合统计学的研究方法,就家庭背景和学校环境两个维度构建个案分析,探讨舟山中小学生对舟山方言的语言态度差异,深入剖析其影响因素及变化趋势,揭示舟山方言生态,以求进一步丰富国内生态语言学的实证研究。