In this paper one-point quadrature'assumed strain'mixed element formulation based on the Hu-Washizu variational principle is presented.Special care is taken to avoid hourglass modes and volumetric locking as w...In this paper one-point quadrature'assumed strain'mixed element formulation based on the Hu-Washizu variational principle is presented.Special care is taken to avoid hourglass modes and volumetric locking as well as shear locking.The assumed strain fields are constructed so that those portions of the fields which lead to volumetric and shear locking phenomena are eliminated by projection,while the implementation of the proposed URI scheme is straightforward to suppress hour- glass modes.In order to treat geometric nonlinearities simply and efficiently,a corotational coordinate system is used.Several numerical examples are given to demonstrate the performance of the suggested formulation,including nonlinear static/dynamic mechanical problems.展开更多
2018 年8 月国际物品编码中心发布了《GS1 WebURI Structure Standard》,即《GS1 Web URI 结构标准》,GS1 Web URI 是将GS1 编码体系与Web URI 两者结合,在Web 地址中实现GS1 标识代码的一致性表示,以链接到在线产品的信息与服务,具有...2018 年8 月国际物品编码中心发布了《GS1 WebURI Structure Standard》,即《GS1 Web URI 结构标准》,GS1 Web URI 是将GS1 编码体系与Web URI 两者结合,在Web 地址中实现GS1 标识代码的一致性表示,以链接到在线产品的信息与服务,具有实现供应链产品标识与网络产品链接两种功能。GS1 Web URI 编码的主要数据载体是以GS1 DataMatrix 为主的二维条码。展开更多
第31届国际信息安全会议USENIX SECURITY将于2022年8月在美国波士顿举行,南开大学网络空间安全学院刘哲理教授带领的数据安全团队的论文“Birds of a Feather Flock Together:How Set Bias Helps to Deanonymize You via Revealed Inter...第31届国际信息安全会议USENIX SECURITY将于2022年8月在美国波士顿举行,南开大学网络空间安全学院刘哲理教授带领的数据安全团队的论文“Birds of a Feather Flock Together:How Set Bias Helps to Deanonymize You via Revealed Intersection Sizes”被会议全文录用。论文由刘哲理教授指导,博士生郭晓杰和硕士生韩叶合作完成。展开更多
文摘In this paper one-point quadrature'assumed strain'mixed element formulation based on the Hu-Washizu variational principle is presented.Special care is taken to avoid hourglass modes and volumetric locking as well as shear locking.The assumed strain fields are constructed so that those portions of the fields which lead to volumetric and shear locking phenomena are eliminated by projection,while the implementation of the proposed URI scheme is straightforward to suppress hour- glass modes.In order to treat geometric nonlinearities simply and efficiently,a corotational coordinate system is used.Several numerical examples are given to demonstrate the performance of the suggested formulation,including nonlinear static/dynamic mechanical problems.
文摘2018 年8 月国际物品编码中心发布了《GS1 WebURI Structure Standard》,即《GS1 Web URI 结构标准》,GS1 Web URI 是将GS1 编码体系与Web URI 两者结合,在Web 地址中实现GS1 标识代码的一致性表示,以链接到在线产品的信息与服务,具有实现供应链产品标识与网络产品链接两种功能。GS1 Web URI 编码的主要数据载体是以GS1 DataMatrix 为主的二维条码。
文摘第31届国际信息安全会议USENIX SECURITY将于2022年8月在美国波士顿举行,南开大学网络空间安全学院刘哲理教授带领的数据安全团队的论文“Birds of a Feather Flock Together:How Set Bias Helps to Deanonymize You via Revealed Intersection Sizes”被会议全文录用。论文由刘哲理教授指导,博士生郭晓杰和硕士生韩叶合作完成。
