Jesse Egbert,Douglas Biber,&Bethany Gray(eds.).2022.Designing and Evaluating Language Corpora:A Practical Framework for Corpus Representativeness.Cambridge:Cambridge University Press.xii+284pp.1引言作为当代语言学...Jesse Egbert,Douglas Biber,&Bethany Gray(eds.).2022.Designing and Evaluating Language Corpora:A Practical Framework for Corpus Representativeness.Cambridge:Cambridge University Press.xii+284pp.1引言作为当代语言学研究的一个分支,语料库语言学因其实证数据的丰富性和可靠性,吸引了越来越多学者的研究兴趣。然而,语料库语言学所涉及的几个相关概念,例如库容、代表性、平衡性和抽样过程,一直是语料库语言学学科探讨的主要话题(Wong et al.2011)。那么,语料库语言学中的“代表性”内涵为何?它与一般应用语言学研究中的数据代表性有何不同?根据Egbert et al.(2022:11)的定义,“代表性”指语料库能够准确概括目标语或话语场域中的典型定量语言模式的程度。展开更多
This Letter proposes to apply full-color computer-generated holograms to the virtual image projection system so that the viewers can comfortably view floating images. Regarding the spatial division and distribution op...This Letter proposes to apply full-color computer-generated holograms to the virtual image projection system so that the viewers can comfortably view floating images. Regarding the spatial division and distribution operation,a modified Gerchberg–Saxton algorithm is used for acquiring the phase infographics, which are input into the spatial light modulator for the reconstructed projection. Such a virtual image projection system could reach the vertical angle of view of 15°–75° and the horizontal angle of view 360°, and the mixed-light modulating proportion contains a 3 m W red light laser, a 2 m W green light laser, and a 2.6 m W blue light laser to achieve the full-color mixed-light proportion with a speckle contrast of 6.65%. The relative diffraction efficiency and root mean square error of the reconstructed image are 95.3% and 0.0524, respectively.展开更多
文摘Jesse Egbert,Douglas Biber,&Bethany Gray(eds.).2022.Designing and Evaluating Language Corpora:A Practical Framework for Corpus Representativeness.Cambridge:Cambridge University Press.xii+284pp.1引言作为当代语言学研究的一个分支,语料库语言学因其实证数据的丰富性和可靠性,吸引了越来越多学者的研究兴趣。然而,语料库语言学所涉及的几个相关概念,例如库容、代表性、平衡性和抽样过程,一直是语料库语言学学科探讨的主要话题(Wong et al.2011)。那么,语料库语言学中的“代表性”内涵为何?它与一般应用语言学研究中的数据代表性有何不同?根据Egbert et al.(2022:11)的定义,“代表性”指语料库能够准确概括目标语或话语场域中的典型定量语言模式的程度。
基金supported by the National Science Council of Taiwan,China under contract NSC 101-2628-E-224-002-MY3
文摘This Letter proposes to apply full-color computer-generated holograms to the virtual image projection system so that the viewers can comfortably view floating images. Regarding the spatial division and distribution operation,a modified Gerchberg–Saxton algorithm is used for acquiring the phase infographics, which are input into the spatial light modulator for the reconstructed projection. Such a virtual image projection system could reach the vertical angle of view of 15°–75° and the horizontal angle of view 360°, and the mixed-light modulating proportion contains a 3 m W red light laser, a 2 m W green light laser, and a 2.6 m W blue light laser to achieve the full-color mixed-light proportion with a speckle contrast of 6.65%. The relative diffraction efficiency and root mean square error of the reconstructed image are 95.3% and 0.0524, respectively.
