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121.
This Letter proposes a snapshot imaging spectrometer, which obtains the spectral information and spatial information in one "shot". The device proposed can achieve the data cube size of 21 × 29 × 40 in the waveband of400–800 nm. The core element of this system is the microlens array, which contains 60 × 60 microlenses in a square arrangement, each microlens has an aperture of 125 μm× 125 μm, and the F number is 15. The microlens array is mounted in a rotation mount, which provides 360° of rotation around the optical axis to maximize the spectral resolution. The final resolution of the system is about 10 nm. 相似文献
122.
本文在$\tilde{\rho}$混合样本下讨论Priestley和CHAO(1972)提出的一类非参数核回归估计的渐近性质,
在较弱的条件下证明了该估计的完全收敛性与强相合性. 相似文献
123.
量子阱中极化子的自能与电磁场和温度的关系 总被引:7,自引:3,他引:4
采用Larsen谐振子算符代数运算与变分微扰相结合的方法,研究处于电磁场中量子阱内电子一体纵光学声子耦合诉性质的曙依赖性,得到了有限温度下系统的自能。 相似文献
124.
A Modified LBM Model for Simulating Gas Seepage in Fissured Coal Considering Klinkenberg Effects and Adsorbability-Desorbability 下载免费PDF全文
A modified Lattice-Boltzmann method is proposed by considering the Klinkenberg effect and adsorbability-desorbability for the purpose of simulating methane gas seepage in fissured coal. The results show that the Klinkenberg effect has a little influence on methane gas seepage in fissured coal, so it can be neglected in engineering computations for simplicity. If both the Klinkenberg effect and the adsorbability-desorbability are considered, the Klinkenberg influence on gas pressure decreases as the Darcy coefficient increases. It is found by gas drainage simulations that near a drainage hole, the effect of adsorption and desorption cannot be neglected, and the location of the drainage hole has a great influence on drainage efficient λ when the hole is just located at the mid-zone of the coal seam, λ is 0.691808; when the hole is excursion down to 1.0m from the mid-zone of coal seam, λ decreases to 0.668631; when the hole is excursion up or down to 2.0m from the mid-zone of coal seam, λ decreases to 0.632917. The simulations supply an effective approach for optimizing the gas drainage hole location. 相似文献
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§ 1 IntroductionIt is well known that wavelets with dilation factor two can be constructed from amultiresolution analysis and lots of their applications have been found.It is also knownthat wavelets with general dilation factor M may be constructed from the multiresolutionanalysis with dilation factor M≥ 2 [1— 3] .Wavelets are closely related to M-channel filterbanks[4,5] ,so some important applications such as in audio coding and communication aredeveloped.Semi-orthogonal wavelets const… 相似文献
127.
Reaction of 1,3-cyclohexadiene(tricarbonyl)iron I with aryllithium, ArLi (Ar=C_6H_(53)-m-, p-CH_3C_6H_4, p-CH_3OC_6H_4, p-CF_3C_6H_4), in ether at low temperature, followed by subsequent alkylstion of the acylmetalates formed with Et_3OBF_4 in aqueous solution at 0°G gave 5 crystalline compounds with the compositions of C_6H_8(CO)_2FeC(OC_2H_5)Ar Ⅱ—Ⅵ formulated as isomerized products of cyclohexadiene(dicarbonyl)[ethoxy(aryl)earbene]iron complexes based on elemental analyses, spectral studies and single crystal X-ray structure determination. The results from syntheses, spectroscopic experiments and X-ray diffraction are reported, and a possible reaction mechanism is tentatively proposed in this paper. 相似文献
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报道了七元环联苯连接的硫羰内酯(DOT)的阳离子开环聚合,得到了一种Tg达到98℃的新型聚硫酯高分子.随后对DOT与乙烯基醚的阳离子共聚进行探索,系统研究了催化剂等对DOT与异丁基乙烯基醚共聚的影响.并基于阳离子聚合型链转移试剂的调控,成功构建了DOT和异丁基乙烯基醚的可控阳离子杂化共聚,制备了一种新型聚乙烯基醚-聚硫酯嵌段共聚物(数均分子量7.6~8.0 kg/mol,PDI<1.40).研究结果为发展杂化共聚新方法和制备新型共聚物材料提供了设计思路. 相似文献