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排序方式: 共有438条查询结果,搜索用时 15 毫秒
71.
Mulders Dounia de Bodt Cyril Bjelland Johannes Pentland Alex Verleysen Michel de Montjoye Yves-Alexandre 《Neural computing & applications》2020,32(24):18023-18043
Neural Computing and Applications - Social networks are known to be assortative with respect to many attributes, such as age, weight, wealth, level of education, ethnicity and gender: Similar... 相似文献
72.
Ighalo Joshua O. Iwuchukwu Felicitas U. Eyankware Oghenegare E. Iwuozor Kingsley O. Olotu Kristinoba Bright Omoregie Cyril Igwegbe Chinenye Adaobi 《Clean Technologies and Environmental Policy》2022,24(8):2349-2363
Clean Technologies and Environmental Policy - To assuage global consumer demand for energy, there is a need for increased biofuel production. Flash pyrolysis is an important technique for biomass... 相似文献
73.
Laterally Ordered Sub‐10 nm Features Obtained From Directed Self‐Assembly of Si‐Containing Block Copolymer Thin Films 下载免费PDF全文
74.
Lukáš Kolek Vít Šisler Patrícia Martinková Cyril Brom 《Journal of Computer Assisted Learning》2021,37(5):1348-1369
This study investigates a video game's effects on implicit and explicit attitudes towards depicted historical events in the short- and long-term on a sample of 148 young adults. We used, as an intervention tool, a serious game Czechoslovakia 38–89: Borderlands that deals with the expulsion of the Sudeten Germans from the former Czechoslovakia after the WWII. Results showed more negative pretest-posttest explicit attitude changes towards the expulsion on a general level (d = −0.34) and a specific level (d = −0.53) compared to the control group. Over the long-term, group differences in attitude change remained significant for the specific level (d = −0.44), but not for general one (d = −0.16). Exploratory analysis on the item level indicated that especially attitudes towards the expulsion's (un)fairness were affected by the game. However, no significant changes were found in implicit attitudes in the experimental group. This study is the first of such scale to empirically investigate video games' effects on a society's historical awareness. 相似文献
75.
Chen-Chen Peng Sheng-Yi Yang Hong-Cheng Li Guo-Hua Xie Lin-Song Cui Sheng-Nan Zou Cyril Poriel Zuo-Quan Jiang Liang-Sheng Liao 《Advanced materials (Deerfield Beach, Fla.)》2020,32(48):2003885
In this work, two novel thermally activated delayed fluorescence (TADF) emitters, 2tDMG and 3tDMG, are synthesized for high-efficiency organic light-emitting diodes (OLEDs), The two emitters have a tilted face-to-face alignment of donor (D)/acceptor (A) units presenting intramolecular noncovalent interactions. The two TADF materials are deposited either by an evaporation-process or by a solution-process, both of them leading to high OLED performance. 2tDMG used as the emitter in evaporation-processed OLEDs achieves a high external quantum efficiency (EQE) of 30.8% with a very flat efficiency roll-off of 7% at 1000 cd m−2. The solution-processed OLEDs also display an interesting EQE of 16.2%. 3tDMG shows improved solubility and solution processability as compared to 2tDMG, and thus a high EQE of 20.2% in solution-processed OLEDs is recorded. The corresponding evaporation-processed OLEDs also reach a reasonably high EQE of 26.3%. Encouragingly, this work provides a novel strategy to address the imperious demands for OLEDs with high EQE and low roll-off. 相似文献
76.
A popular approach for computing photorealistic images of virtual objects requires applying reflectance profiles measured from real surfaces, introducing several challenges: the memory needed to faithfully capture realistic material reflectance is large, the choice of materials is limited to the set of measurements, and image synthesis using the measured data is costly. Typically, this data is either compressed by projecting it onto a subset of its linear principal components or by applying non‐linear methods. The former requires many components to faithfully represent the input reflectance, whereas the latter necessitates costly extrapolation algorithms. We learn an underlying, low‐dimensional non‐linear reflectance manifold amenable to rapid exploration and rendering of real‐world materials. We can express interpolated materials as linear combinations of the measured data, despite them lying on an inherently non‐linear manifold. This allows us to efficiently interpolate and extrapolate measured BRDFs, and to render directly from the manifold representation. We exploit properties of Gaussian process latent variable models and use our representation for high‐performance and offline rendering with interpolated real‐world materials. 相似文献
77.
Maria Letizia De Marco Taizhi Jiang Jie Fang Sabrina Lacomme Yuebing Zheng Alexandre Baron Brian A. Korgel Philippe Barois Glenna L. Drisko Cyril Aymonier 《Advanced functional materials》2021,31(26):2100915
A goal in the field of nanoscale optics is the fabrication of nanostructures with strong directional light scattering at visible frequencies. Here, the synthesis of Mie-resonant core–shell particles with overlapping electric and magnetic dipole resonances in the visible spectrum is demonstrated. The core consists of silicon surrounded by a lower index silicon oxynitride (SiOxNy) shell of an adjustable thickness. Optical spectroscopies coupled to Mie theory calculations give the first experimental evidence that the relative position and intensity of the magnetic and electric dipole resonances are tuned by changing the core–shell architecture. Specifically, coating a high-index particle with a low-index shell coalesces the dipoles, while maintaining a high scattering efficiency, thus generating broadband forward scattering. This synthetic strategy opens a route toward metamaterial fabrication with unprecedented control over visible light manipulation. 相似文献
78.
Monera Oscar D.; Snnichsen Frank D.; Hicks Les; Kay Cyril M.; Hodges Robert S. 《Protein engineering, design & selection : PEDS》1996,9(4):353-363
The objective of this study was to investigate the positionaleffect of hydrophobic interactions in the -helical interfacein controlling the formation of two-stranded and four-strandedcoiled-coils. Two disulfide-bridged antiparallel coiled-coilswere designed which differ only in the position of a singleAla residue in the middle heptad: in peptide 2H the Ala residuesare in register (in the same rung), while in peptide 4H theyare not. Data from size-exclusion chromatography and sedimentationequilibrium experiments showed that under benign conditionspeptides 2H and 4H were two-stranded and four-stranded coiled-coilsrespectively. These results, in conjunction with molecular modelingstudies, suggest that when four Ala residues are in the sameplane of a potential four-stranded coiled-coil, the small sidechains of Ala would create a large cavity in the hydrophobicinterface of the potential four-stranded structure which isdestabilizing and favors the two-stranded, disulfide-bridgedcoiled-coil. In contrast, an alternating Leu-Ala hydrophobicpacking in the two planes distributes the potential cavity overa larger region, which may be partially filled by minor adjustmentsof the neighboring Leu side chains. As a result, there is stillsufficient hydrophobic contact to maintain the four-strandedstructure. 相似文献
79.
Increasing the Efficiency of Organic Dye‐Sensitized Solar Cells over 10.3% Using Locally Ordered Inverse Opal Nanostructures in the Photoelectrode 下载免费PDF全文
Lin Xu Cyril Aumaitre Yann Kervella Gérard Lapertot Cristina Rodríguez‐Seco Emilio Palomares Renaud Demadrille Peter Reiss 《Advanced functional materials》2018,28(15)
3D inverse opal (3D‐IO) oxides are very appealing nanostructures to be integrated into the photoelectrodes of dye‐sensitized solar cells (DSSCs). Due to their periodic interconnected pore network with a high pore volume fraction, they facilitate electrolyte infiltration and enhance light scattering. Nonetheless, preparing 3D‐IO structures directly on nonflat DSSC electrodes is challenging. Herein, 3D‐IO TiO2 structures are prepared by templating with self‐assembled polymethyl methacrylate spheres on glass substrates, impregnation with a mixed TiO2:SiO2 precursor and calcination. The specific surface increases from 20.9 to 30.7 m2 g?1 after SiO2 removal via etching, which leads to the formation of mesopores. The obtained nanostructures are scraped from the substrate, processed as a paste, and deposited on photoelectrodes containing a mesoporous TiO2 layer. This procedure maintains locally the 3D‐IO order. When sensitized with the novel benzothiadiazole dye YKP‐88, DSSCs containing the modified photoelectrodes exhibit an efficiency of 10.35% versus 9.26% for the same devices with conventional photoelectrodes. Similarly, using the ruthenium dye N719 as sensitizer an efficiency increase from 5.31% to 6.23% is obtained. These improvements originate mainly from an increase in the photocurrent density, which is attributed to an enhanced dye loading obtained with the mesoporous 3D‐IO structures due to SiO2 removal. 相似文献
80.
Back Cover: On the Influence of the Protonation States of Active Site Residues on AChE Reactivation: A QM/MM Approach (ChemBioChem 7/2017) 下载免费PDF全文