英语复杂介词应界定为词还是短语,学界未有定论。本文以构式化理论为视角,借助语义向量空间的定量方法,考察临界复杂介词in the face of的固化过程。本研究发现:1)在过去200年间,该构式的能产性和图式性增加,而组构性降低。从基于使用...英语复杂介词应界定为词还是短语,学界未有定论。本文以构式化理论为视角,借助语义向量空间的定量方法,考察临界复杂介词in the face of的固化过程。本研究发现:1)在过去200年间,该构式的能产性和图式性增加,而组构性降低。从基于使用的视角来看,这种变化趋势不仅反映了构式固化程度的增强,同时也表明其逐渐向介词范畴的演进;2)该构式的固化过程并不是单向的线性发展,而是表现为构式节点间横向和纵向关系的变化;3)该构式固化的动因有二:一是高能产性导致的组块效应,二是识解层面的语义简化。展开更多
Three-dimensional(3D)printing allows for the construction of complex structures.However,3D-printing vertical structures with a high aspect ratio remains a pending challenge,especially when a high lateral resolution is...Three-dimensional(3D)printing allows for the construction of complex structures.However,3D-printing vertical structures with a high aspect ratio remains a pending challenge,especially when a high lateral resolution is required.Here,to address this challenge,we propose and demonstrate micro-3D sculptured metastructures with deep trenches of 1:4(width:height)aspect ratio for sub-10µm resolution.Our construction relies on two-photon polymerization for a 3D-pattern with its trenches,followed by electroplating of a thick metal film and its dry etching to remove the seed layer.To test the proposed fabrication process,we built up three-dimensional RF metastructures showcasing the depth effect as the third dimension.Using the numerical solutions,we custom-tailored these metastructure resonators to fall within a specific resonance frequency range of 4-6 GHz while undertaking comparative analyses regarding overall footprint,quality factor,and resonance frequency shift as a function of their cross-sectional aspect ratio.The proposed process flow is shown to miniaturize metal footprint and tune the resonance frequency of these thick 3Dmetastructures while increasing their quality factor.These experimental findings indicate that this method of producing trenches via 3D-printing provides rich opportunities to implement high-aspect-ratio,complex structures.展开更多
文摘英语复杂介词应界定为词还是短语,学界未有定论。本文以构式化理论为视角,借助语义向量空间的定量方法,考察临界复杂介词in the face of的固化过程。本研究发现:1)在过去200年间,该构式的能产性和图式性增加,而组构性降低。从基于使用的视角来看,这种变化趋势不仅反映了构式固化程度的增强,同时也表明其逐渐向介词范畴的演进;2)该构式的固化过程并不是单向的线性发展,而是表现为构式节点间横向和纵向关系的变化;3)该构式固化的动因有二:一是高能产性导致的组块效应,二是识解层面的语义简化。
基金the financial support in part from TUBITAK 20AG001,and 121C266HVD also acknowledges the support from TUBA and TUBITAK 2247-A National Leader Researchers Program(121C266)。
文摘Three-dimensional(3D)printing allows for the construction of complex structures.However,3D-printing vertical structures with a high aspect ratio remains a pending challenge,especially when a high lateral resolution is required.Here,to address this challenge,we propose and demonstrate micro-3D sculptured metastructures with deep trenches of 1:4(width:height)aspect ratio for sub-10µm resolution.Our construction relies on two-photon polymerization for a 3D-pattern with its trenches,followed by electroplating of a thick metal film and its dry etching to remove the seed layer.To test the proposed fabrication process,we built up three-dimensional RF metastructures showcasing the depth effect as the third dimension.Using the numerical solutions,we custom-tailored these metastructure resonators to fall within a specific resonance frequency range of 4-6 GHz while undertaking comparative analyses regarding overall footprint,quality factor,and resonance frequency shift as a function of their cross-sectional aspect ratio.The proposed process flow is shown to miniaturize metal footprint and tune the resonance frequency of these thick 3Dmetastructures while increasing their quality factor.These experimental findings indicate that this method of producing trenches via 3D-printing provides rich opportunities to implement high-aspect-ratio,complex structures.
