Results 11 to 20 of about 6,785,321 (317)
Contrasting a Misinterpretation of the Reverse Contrast [PDF]
Vision, 2020 The reverse contrast is a perceptual phenomenon in which the effect of the classical simultaneous lightness contrast is reversed. In classic simultaneous lightness contrast configurations, a gray surrounded by black is perceived lighter than an identical gray surrounded by white, but in the reverse contrast configurations, the perceptual outcome is the
Tiziano Agostini +4 more
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Dimethyl 3,3′-[(4-nitrophenyl)methylene]bis(1H-indole-2-carboxylate) ethanol hemisolvate
IUCrData, 2021 There are two main molecules in asymmetric unit of the title compound, C27H21N3O6·0.5C2H5OH. In both, the indole ring systems are approximately perpendicular to each other, at dihedral angles of 69.3 (5) and 82.8(4)°. In the crystal, molecules are linked
Yu-Long Li +6 more
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Contrasting the landscape of contrastive and non-contrastive learning
CoRR, 2022 A lot of recent advances in unsupervised feature learning are based on designing features which are invariant under semantic data augmentations. A common way to do this is contrastive learning, which uses positive and negative samples. Some recent works however have shown promising results for non-contrastive learning, which does not require negative ...
Ashwini Pokle +3 more
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7,8-Dimethyl-11H-indeno[1,2-b]quinoxalin-11-one
IUCrData, 2021 In the title compound, C17H12N2O, the mean planes of the indene ring and quinoxaline system (r.m.s. deviations = 0.0131 and 0.0082 Å) are approximately parallel to one another, making a dihedral angle of 1.2 (5)°.
Lin Chen, Jin Hu, Hong-Shun Sun
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Evidence-based nutritional guidelines: What is meant by trustworthy recommendations
Mètode Science Studies Journal: Annual Review, 2021 The article aims to describe the characteristics of trustworthy recommendations as well as standards for trustworthy guidelines published by the Institute of Medicine and tools that can be used for quality assessment.
Joanna Zając +2 more
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Diethyl 3,3′-[(3-fluorophenyl)methylene]bis(1H-indole-2-carboxylate)
IUCrData, 2020 In the title compound, C29H25FN2O4, the mean planes of the indole ring systems are approximately perpendicular to one another [dihedral angle = 88.3 (4)°]. The benzene ring is twisted with respect to the indole ring systems by 49.8 (5) and 77.6 (3)°.
Hong Jiang +7 more
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Zeitschrift für Kristallographie - New Crystal Structures, 2023 C48H56Cd2N8O8, monoclinic, P21 (no. 4), a = 10.7150(6) Å, b = 15.5902(8) Å, c = 14.3463(7) Å, β = 91.032(2)°, V = 2396.1(2) Å3, Z = 2, Rgt(F) = 0.0504, wRref(F2) = 0.1339, T = 173 K.
Sun Hong-Shun
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11,11-Diphenyl-11H-indeno[1,2-b]quinoxaline
IUCrData, 2020 In the title compound, C27H18N2, the mean planes of the pendant benzene rings are approximately perpendicular to one another, making a dihedral angle of 79.3 (5)°; the indeno[1,2-b]quinoxaline ring system (r.m.s.
Lin Chen +3 more
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Contrastive Markers in Contrast [PDF]
Discours, 2019 Contrastive markers are one of the richest groups of discourse markers in Romance languages. There are several conjunctions and other connectives that can express various types of contrast both at the text level and at the sentence level.
Cuenca, MJ, Postolea, S, Visconti, J
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Binocular interaction: contrast matching and contrast discrimination are predicted by the same model [PDF]
, 2007 How do signals from the 2 eyes combine and interact? Our recent work has challenged earlier schemes in which monocular contrast signals are subject to square-law transduction followed by summation across eyes and binocular gain control.
Tim S. Meese +11 more
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