White Cyphochilus insulanus beetles,exhibiting both environmental camouflage display and radiative cooling functions,serve as a good prototype for biomimetic fabrication.As inspired,this work presents a femtosecond(fs...White Cyphochilus insulanus beetles,exhibiting both environmental camouflage display and radiative cooling functions,serve as a good prototype for biomimetic fabrication.As inspired,this work presents a femtosecond(fs)laser-based biomimetic fabrication strategy that takes full use of the synthesized radiative cooling nanomaterials for a groundbreaking stimuli-responsive infrared(IR)impressionistic camouflage display.The proposed technique is capable of readily transforming various substrates(quartz glass and metals including Ti,Al,Zr,and W)into self-assembled porous networks(aerogels)consisting of oxygen-vacancy-rich oxide nanoparticles.Surprisingly,the emissions of all as-prepared porous particle-networks in the radiative-cooling long-wavelength infrared(LWIR)band are above 95%,with the SiO_(2) aerogels reaching a maximum of 99.6%.Benefiting from the far-from-equilibrium thermodynamic kinetics,metastable phases of anatase TiO_(2),tetragonal zirconia(t-ZrO_(2)),and monoclinic WO_(3)(Pc)are synthesizable,opening up opportunities for exploring their optical applications.Taking the low-temperature metastable phase WO_(3)(Pc)as representative for systematic studies,it is found that(1)the ratio WO_(3)(Pc)phase to that of room-temperature phase of WO_(3)(P2_(1)/n)can be tailored by modulation of processing parameters;(2)laser synthesized aerogels with hybrid phases of WO_(3)(Pc)and WO_(3)(P2_(1)/n)have a brighter visible whiteness,higher visible/nearinfrared(NIR)spectral selectivity than the natural prototype of white Cyphochilus insulanus beetles but with comparable LWIR emittance.White WO_(3) aerogel in situ deposited during flexibly fs laser artistic patterning can blur the painting features due to its radiative cooling effect,allowing a colorful impressionistic IR display in the heating mode.What's more,invisible painting features concealed by the white deposited WO_(3) aerogel are clearly/faintly distinguishable by introducing external stimuli of a human hand and sample heating,respectively,catalyzing progress in optical encryption and selectively stimuli-responsive decryption display in the infrared band.展开更多
Coursebook is an essential part in English language teaching. Evaluating a coursebook is very helpful task for teachers' development. This paper reviews three methods of evaluating coursebook, which are the impres...Coursebook is an essential part in English language teaching. Evaluating a coursebook is very helpful task for teachers' development. This paper reviews three methods of evaluating coursebook, which are the impressionistic method, the checklist method, and the in-depth method. Then the author adopts the hybrid of these three methods mentioned to evaluate a coursebook - Cambridge English for the Media - used by some Chinese students in a one-year exchange programme in UK. Questionnaire and semi- structured interviews are carried out with the students to get their views about the coursebook. At the end, this paper compares teacher's view with the learners'based on the data from the questionnaire and semi-structured interviews. The results of this study show that there are conflicts between the teacher's views and the students'on the coursebook.展开更多
A method for placing oil paint in metal tubes occurred in the early 1840s, which facilitated artists taking their materials out of doors to paint nature directly. In France in the 1860s, we know of painters like Claud...A method for placing oil paint in metal tubes occurred in the early 1840s, which facilitated artists taking their materials out of doors to paint nature directly. In France in the 1860s, we know of painters like Claude Monet were working on beaches and port cities to capture the effect of scenes under natural light. By 1874 the Anonymous Society of Painters, Sculptors, Engravers, etc. （Impressionists） offered their first public exhibition to much criticism. A common complaint of the new work was that it lacked finish to be considered as a completed work for sale. It is the view of this paper that outdoor, or plein air painting, developed because of the circumstances this type of work developed in the artist naturally. I focus on two areas that outdoor painting forced the artist to consider： incidents and accidents. The incidents refer to the varied weather the painter had to deal with and the accidents identify the intuitive methods the plein air painters fell practice to when confronted by difficult passages or situations in nature. These experiences would shift the focus of the Impressionists from recording nature in a naturalistic way to self-expression, which would become a key idea in early modem painting. The finish the detractors of Impressionism called for would be replaced by an appreciation for the personal in painting as exacting images of landscape became predictable and lacked the vitality of the intuitive picture that could offer something new to art.展开更多
The paper analyzes the artistic features embodied in The Waves （2000） from the perspective of internal focalization, poeticized features including symbolism, musical lyricism and rhythm and rhyme, and the impression...The paper analyzes the artistic features embodied in The Waves （2000） from the perspective of internal focalization, poeticized features including symbolism, musical lyricism and rhythm and rhyme, and the impressionist and post-impressionist painting techniques, such as the employments of color, transient moment and simplification principle. Multiple artistic features are presented so harmoniously in the novel that Woolf makes it possible to develop novels with different art forms展开更多
基金financial support received from the Shanghai Pujiang Program(23PJ1406500)。
文摘White Cyphochilus insulanus beetles,exhibiting both environmental camouflage display and radiative cooling functions,serve as a good prototype for biomimetic fabrication.As inspired,this work presents a femtosecond(fs)laser-based biomimetic fabrication strategy that takes full use of the synthesized radiative cooling nanomaterials for a groundbreaking stimuli-responsive infrared(IR)impressionistic camouflage display.The proposed technique is capable of readily transforming various substrates(quartz glass and metals including Ti,Al,Zr,and W)into self-assembled porous networks(aerogels)consisting of oxygen-vacancy-rich oxide nanoparticles.Surprisingly,the emissions of all as-prepared porous particle-networks in the radiative-cooling long-wavelength infrared(LWIR)band are above 95%,with the SiO_(2) aerogels reaching a maximum of 99.6%.Benefiting from the far-from-equilibrium thermodynamic kinetics,metastable phases of anatase TiO_(2),tetragonal zirconia(t-ZrO_(2)),and monoclinic WO_(3)(Pc)are synthesizable,opening up opportunities for exploring their optical applications.Taking the low-temperature metastable phase WO_(3)(Pc)as representative for systematic studies,it is found that(1)the ratio WO_(3)(Pc)phase to that of room-temperature phase of WO_(3)(P2_(1)/n)can be tailored by modulation of processing parameters;(2)laser synthesized aerogels with hybrid phases of WO_(3)(Pc)and WO_(3)(P2_(1)/n)have a brighter visible whiteness,higher visible/nearinfrared(NIR)spectral selectivity than the natural prototype of white Cyphochilus insulanus beetles but with comparable LWIR emittance.White WO_(3) aerogel in situ deposited during flexibly fs laser artistic patterning can blur the painting features due to its radiative cooling effect,allowing a colorful impressionistic IR display in the heating mode.What's more,invisible painting features concealed by the white deposited WO_(3) aerogel are clearly/faintly distinguishable by introducing external stimuli of a human hand and sample heating,respectively,catalyzing progress in optical encryption and selectively stimuli-responsive decryption display in the infrared band.
文摘Coursebook is an essential part in English language teaching. Evaluating a coursebook is very helpful task for teachers' development. This paper reviews three methods of evaluating coursebook, which are the impressionistic method, the checklist method, and the in-depth method. Then the author adopts the hybrid of these three methods mentioned to evaluate a coursebook - Cambridge English for the Media - used by some Chinese students in a one-year exchange programme in UK. Questionnaire and semi- structured interviews are carried out with the students to get their views about the coursebook. At the end, this paper compares teacher's view with the learners'based on the data from the questionnaire and semi-structured interviews. The results of this study show that there are conflicts between the teacher's views and the students'on the coursebook.
文摘A method for placing oil paint in metal tubes occurred in the early 1840s, which facilitated artists taking their materials out of doors to paint nature directly. In France in the 1860s, we know of painters like Claude Monet were working on beaches and port cities to capture the effect of scenes under natural light. By 1874 the Anonymous Society of Painters, Sculptors, Engravers, etc. （Impressionists） offered their first public exhibition to much criticism. A common complaint of the new work was that it lacked finish to be considered as a completed work for sale. It is the view of this paper that outdoor, or plein air painting, developed because of the circumstances this type of work developed in the artist naturally. I focus on two areas that outdoor painting forced the artist to consider： incidents and accidents. The incidents refer to the varied weather the painter had to deal with and the accidents identify the intuitive methods the plein air painters fell practice to when confronted by difficult passages or situations in nature. These experiences would shift the focus of the Impressionists from recording nature in a naturalistic way to self-expression, which would become a key idea in early modem painting. The finish the detractors of Impressionism called for would be replaced by an appreciation for the personal in painting as exacting images of landscape became predictable and lacked the vitality of the intuitive picture that could offer something new to art.
文摘The paper analyzes the artistic features embodied in The Waves （2000） from the perspective of internal focalization, poeticized features including symbolism, musical lyricism and rhythm and rhyme, and the impressionist and post-impressionist painting techniques, such as the employments of color, transient moment and simplification principle. Multiple artistic features are presented so harmoniously in the novel that Woolf makes it possible to develop novels with different art forms
