The finite cell method （FCM） combines the high-order finite element method （FEM） with the fictitious domain approach for the purpose of simple meshing. In the present study, the FCM is used to the Prandtl-Reuss fl...The finite cell method （FCM） combines the high-order finite element method （FEM） with the fictitious domain approach for the purpose of simple meshing. In the present study, the FCM is used to the Prandtl-Reuss flow theory of plasticity, and the results are compared with the h-version finite element method （h-FEM）. The numerical results show that the FCM is more efficient compared to the h-FEM for elasto-plastic problems, although the mesh does not conform to the boundary. It is also demonstrated that the FCM performs well for elasto-plastic loading and unloading.展开更多
A new method for estimating the posterior error of linear triangular element is presented. According to the specified accuracy, the element size and node spacing function of adaptive h-version mesh refinement are pred...A new method for estimating the posterior error of linear triangular element is presented. According to the specified accuracy, the element size and node spacing function of adaptive h-version mesh refinement are predicted. The main domain is divided by the isolines of node spacing into subregions in which mesh regeneration is realized. This remeshing refinement process implements mesh subdivision and mesh de-refinement in onecycle.展开更多
目的:引进特拉华校园氛围量表(家长卷)2016版(Delaware School Climate Scale-Home,DSCS-H),对其进行中文修订,检验DSCS-H中文版在我国中小学家长群体中的信、效度及其跨年级、性别的测量等值性。方法:应用中文版DSCS-H对4个地区8所学校...目的:引进特拉华校园氛围量表(家长卷)2016版(Delaware School Climate Scale-Home,DSCS-H),对其进行中文修订,检验DSCS-H中文版在我国中小学家长群体中的信、效度及其跨年级、性别的测量等值性。方法:应用中文版DSCS-H对4个地区8所学校1-12年级2020名学生家长进行施测。以家长对学校的满意度、子女的学业成绩及其报告的欺负受害得分为效标,四周后抽取其中63名被试进行重测。结果:①DSCS-H中文版维度结构与原量表一致,验证性因素分析结果支持DSCS-H二阶模型;②DSCS-H总分与小学生的语文、数学成绩相关系数分别为0.348和0.318(P<0.01),与中学生的语文、数学成绩相关系数在0.116-0.226之间(P<0.05);与DBVS-S总分及三个维度(身体欺负、关系欺负和言语欺负)的相关系数分别为-0.203、-0.176、-0.188和-0.164(P<0.01);与家长对学校满意度的相关为0.829(P<0.01);③修订后的中文版DSCS-H总量表α系数为0.964,分半信度系数为0.956,重测信度系数为0.782;④数据分析结果显示,基于中国地区样本的二阶因素模型,DSCS-H具有跨家长性别和跨子女年级的完全等值性。结论:修订后的特拉华学校氛围量表-家长版(DSCS-H)具有较高的信效度和跨家长性别、跨学生年级的不变性,是测量我国中小学家长校园氛围感知的有效工具。展开更多
The paper investigates the h-p version of the infinite element method. An exponential conver gence can be abtained by a small amount of computing work.
基金supported by the Alexander von Humboldt Foundation
文摘The finite cell method （FCM） combines the high-order finite element method （FEM） with the fictitious domain approach for the purpose of simple meshing. In the present study, the FCM is used to the Prandtl-Reuss flow theory of plasticity, and the results are compared with the h-version finite element method （h-FEM）. The numerical results show that the FCM is more efficient compared to the h-FEM for elasto-plastic problems, although the mesh does not conform to the boundary. It is also demonstrated that the FCM performs well for elasto-plastic loading and unloading.
文摘A new method for estimating the posterior error of linear triangular element is presented. According to the specified accuracy, the element size and node spacing function of adaptive h-version mesh refinement are predicted. The main domain is divided by the isolines of node spacing into subregions in which mesh regeneration is realized. This remeshing refinement process implements mesh subdivision and mesh de-refinement in onecycle.
文摘目的:引进特拉华校园氛围量表(家长卷)2016版(Delaware School Climate Scale-Home,DSCS-H),对其进行中文修订,检验DSCS-H中文版在我国中小学家长群体中的信、效度及其跨年级、性别的测量等值性。方法:应用中文版DSCS-H对4个地区8所学校1-12年级2020名学生家长进行施测。以家长对学校的满意度、子女的学业成绩及其报告的欺负受害得分为效标,四周后抽取其中63名被试进行重测。结果:①DSCS-H中文版维度结构与原量表一致,验证性因素分析结果支持DSCS-H二阶模型;②DSCS-H总分与小学生的语文、数学成绩相关系数分别为0.348和0.318(P<0.01),与中学生的语文、数学成绩相关系数在0.116-0.226之间(P<0.05);与DBVS-S总分及三个维度(身体欺负、关系欺负和言语欺负)的相关系数分别为-0.203、-0.176、-0.188和-0.164(P<0.01);与家长对学校满意度的相关为0.829(P<0.01);③修订后的中文版DSCS-H总量表α系数为0.964,分半信度系数为0.956,重测信度系数为0.782;④数据分析结果显示,基于中国地区样本的二阶因素模型,DSCS-H具有跨家长性别和跨子女年级的完全等值性。结论:修订后的特拉华学校氛围量表-家长版(DSCS-H)具有较高的信效度和跨家长性别、跨学生年级的不变性,是测量我国中小学家长校园氛围感知的有效工具。
基金The research was supported by the Doctoral Program Foundation of Chinese UniversitiesNational Natural Science Foundation of China (19771021)
文摘The paper investigates the h-p version of the infinite element method. An exponential conver gence can be abtained by a small amount of computing work.
