Based on focused ion beam and shear friction apparatus data, the multi-resolutions (0.2 nm-5μm) volume roughness & asperity contact (VR & AC) three-dimensional structure on principle slip surface interface-surf...Based on focused ion beam and shear friction apparatus data, the multi-resolutions (0.2 nm-5μm) volume roughness & asperity contact (VR & AC) three-dimensional structure on principle slip surface interface-surface (PSS-IS) is measured on high performance computational platform; and physical plastic-creep friction model is established by using hybrid hyper-singular integral equation & lattice Boltzmann & lattice Green function (BE-LB-LG). The correlation of rheological property and VR & AC evolution under transient (10 μs) macro-normal stress (18-300 MPa) and slip rate (0.25-7.5 m/s) are obtained; and the PSS-IS friction in co-seismic flash heating is quantitative analyzed for the first time.展开更多
手机的基于位置的服务(LBS,Location Based Service)系统发展迅速,已经成为G IS应用的一个重要组成部分。LBS用户所处的环境以及对空间信息的使用方式均与传统的地图有了较大的差别,因此现有的地图传输理论已不能完全适应LBS系统的工作...手机的基于位置的服务(LBS,Location Based Service)系统发展迅速,已经成为G IS应用的一个重要组成部分。LBS用户所处的环境以及对空间信息的使用方式均与传统的地图有了较大的差别,因此现有的地图传输理论已不能完全适应LBS系统的工作模式。在分析LBS系统特点的基础上,介绍了传统的Kolacny地图传输模型应用的局限性,提出了基于位置服务系统中的空间信息传输模型,这种模型具有对用户要求低、传输效率高以及表现形式多样化等特点。展开更多
文摘Based on focused ion beam and shear friction apparatus data, the multi-resolutions (0.2 nm-5μm) volume roughness & asperity contact (VR & AC) three-dimensional structure on principle slip surface interface-surface (PSS-IS) is measured on high performance computational platform; and physical plastic-creep friction model is established by using hybrid hyper-singular integral equation & lattice Boltzmann & lattice Green function (BE-LB-LG). The correlation of rheological property and VR & AC evolution under transient (10 μs) macro-normal stress (18-300 MPa) and slip rate (0.25-7.5 m/s) are obtained; and the PSS-IS friction in co-seismic flash heating is quantitative analyzed for the first time.
文摘手机的基于位置的服务(LBS,Location Based Service)系统发展迅速,已经成为G IS应用的一个重要组成部分。LBS用户所处的环境以及对空间信息的使用方式均与传统的地图有了较大的差别,因此现有的地图传输理论已不能完全适应LBS系统的工作模式。在分析LBS系统特点的基础上,介绍了传统的Kolacny地图传输模型应用的局限性,提出了基于位置服务系统中的空间信息传输模型,这种模型具有对用户要求低、传输效率高以及表现形式多样化等特点。