Search results for "Contrast"
showing 10 items of 1162 documents
In praise of artifice reloaded: Caution with natural image databases in modeling vision
2019
Subjective image quality databases are a major source of raw data on how the visual system works in naturalistic environments. These databases describe the sensitivity of many observers to a wide range of distortions of different nature and intensity seen on top of a variety of natural images. Data of this kind seems to open a number of possibilities for the vision scientist to check the models in realistic scenarios. However, while these natural databases are great benchmarks for models developed in some other way (e.g., by using the well-controlled artificial stimuli of traditional psychophysics), they should be carefully used when trying to fit vision models. Given the high dimensionalit…
NC-AFM contrast formation on the calcite ($10\bar {1}4$) surface
2012
Calcite, the most stable polymorph of calcium carbonate, is one of the most abundant simple salts in the geological environment. Consequently, its natural cleavage plane has been studied extensively by a wide range of surface-sensitive techniques, giving indications for two reconstructions, namely a (2 × 1) and a so-called ‘row-pairing’ reconstruction. The existence of the (2 × 1) reconstruction has been discussed controversially in the literature, but is now confirmed as a true surface property. In contrast, a comprehensive discussion on the existence of the row-pairing reconstruction is lacking so far.Here, we present a non-contact atomic force microscopy (NC-AFM) study of the calcite s…
Fashion versus perception: the impact of surface lightness on the perceived dimensions of interior space.
2011
Objectives: We compare expert opinion with perceptual judgment regarding the influence of color on the perceived height and width of interior rooms. Background: We hypothesize that contrary to popular belief, ceiling and wall lightness have additive effects on perceived height, whereas the lightness contrast between these surfaces is less important. We assessed the intuitions of architectural experts as to which surface colors maximize apparent height and compared these intuitions with psychophysical height and width estimates for rooms differing in ceiling, floor, and wall lightness. Method: Experiment 1 was a survey of architectural experts and nonexperts. Experiments 2 and 3 presented v…
Temperature dependence of surface reorganization characteristics of amphiphilic block copolymer in air and in water studied by scanning force microsc…
2015
We have investigated the surface reorganization characteristics of a novel amphiphilic diblock copolymer, poly(acetic acid-2-(2-(4-vinyl-phenoxy)-ethoxy)-ethylester)-block-polystyrene (PAEES-b-PS), in response to varying interfaces from air to water and vice-versa at various temperatures. The surface reorganization characteristics of the block copolymer films was monitored by scanning force microscopy, in order to delineate the kinetically controlled morphological process of surface reorganization of a diblock copolymer, with a particular emphasis on the phase contrast signal which allowed the determination of local composition patterns of PAEES-b-PS at the surface. Upon heating a water-an…
Diagnostic tools for female urethral diverticulum: Current perspectives
2019
Although once considered quite a rare condition in the past, female urethral diverticulum (UD) would now appear to have a higher frequency, perhaps due to greater attention from physicians. To date, there is no agreement on which is the best method for diagnosis of female UD. Traditionally, the approach was based on quite invasive techniques, such as voiding cystourethrography, and double-balloon urethrography, with satisfactory results but relevant limitations. More recent high-resolution imaging techniques, such as 2D-3D ultrasonography (US) and magnetic resonance imaging (MRI) have also been applied in the study of the abnormalities of the female urethra. US had the advantage of the outp…
Иностранные языки в высшей школе. Выпуск 2: Лингвистика, психология и методика обучения иностранным языкам
1975
Статьи сборника представляют собой результаты исследований по лингвистическому обоснованию, психологии и методике обучения иностранным языкам в неязыковом вузе.
Иностранные языки в высшей школе. Выпуск 4: Лингвистика, психология и методика обучения иностранным языкам
1976
Статьи настоящего сборника представляют собой результаты исследований по лингвистическому обоснованию, психологии и методике обучения иностранным языкам в неязыковом вузе.
Иностранные языки в высшей школе. Выпуск 1: Лингвистика, психология и методика обучения иностранным языкам
1973
Статьи настоящего сборника представляют собой результаты исследований по лингвистическому обоснованию, психологии и методике обучения иностранным языкам в неязыковом вузе.
Иностранные языки в высшей школе. Выпуск 3: Лингвистика, психология и методика обучения иностранным языкам
1975
Статьи настоящего сборника представляют собой результаты исследований по лингвистическому обоснованию, психологии и методике обучения иностранным языкам в неязыковом вузе.
Bestiality: Animal Cultures
2018
Multinaturalism shouldn’t be viewed solely as the paradigmatic existence of multiple natures in different cultures – or “ontologies” as Descola refers to them – but also and most importantly as the syntagmatic presence, and the resulting contrast, of various ontologies within the same culture. From a semiotic point of view, then, the so-called ontologies are considered to be effects of meaning derived from precise discursive dispositifs. Describing such dispositifs is the aim of this paper.