Search results for " colors"
showing 6 items of 6 documents
La resemantització com a recurs creatiu: la neologia cromàtica
2015
El valor simbòlic que han adquirit els termes dels colors en les diferents cultures al llarg de la història explica que siguin un element recurrentment utilitzat per a la creativitat lèxica. En aquest treball abordem, des d’una perspectiva lingüística, un aspecte de l’estudi dels termes dels colors que ha estat poc tractat fins ara: el paper que juguen en la resemantització de les unitats lèxiques d’una llengua. Per fer-ho, partim, d’una banda, d’alguns dels conceptes fonamentals establerts des de l’antropologia lingüística, i de l’altra, dels supòsits teòrics de la semàntica cognitiva. Després de donar compte, en els primers apartats, dels conceptes teòrics fonamentals en què ens basem, an…
Chromatic sums for colorings avoiding monochromatic subgraphs
2015
Abstract Given graphs G and H, a vertex coloring c : V ( G ) → N is an H-free coloring of G if no color class contains a subgraph isomorphic to H. The H-free chromatic number of G, χ ( H , G ) , is the minimum number of colors in an H-free coloring of G. The H-free chromatic sum of G , Σ ( H , G ) , is the minimum value achieved by summing the vertex colors of each H-free coloring of G. We provide a general bound for Σ ( H , G ) , discuss the computational complexity of finding this parameter for different choices of H, and prove an exact formulas for some graphs G. For every integer k and for every graph H, we construct families of graphs, G k with the property that k more colors than χ ( …
The evolution of colour pattern complexity: selection for conspicuousness favours contrasting within-body colour combinations in lizards.
2015
Many animals display complex colour patterns that comprise several adjacent, often contrasting colour patches. Combining patches of complementary colours increases the overall conspicuousness of the complex pattern, enhancing signal detection. Therefore, selection for conspicuousness may act not only on the design of single colour patches, but also on their combination. Contrasting long- and short-wavelength colour patches are located on the ventral and lateral surfaces of many lacertid lizards. As the combination of long- and short-wavelength-based colours generates local chromatic contrast, we hypothesized that selection may favour the co-occurrence of lateral and ventral contrasting patc…
A Tunable Digital Ishihara Plate for Pre-School Aged Children
2016
Colors play a fundamental role for children, both in the everyday life and in education. They recognize the surrounding world, and play games making a large use of colors. They learn letters and numbers by means of colors. As a consequence, early diagnosis of color blindness is an crucial to support an individual affected by this visual perception alteration at the initial phase of his/her life. The diagnosis of red-green color deficiencies (protanopia or deuteranopia) is commonly accomplished by means of the Ishihara test, which consists of plates showing dots with different sizes where some of them compose numbers within a gamut of colors while the ones composing the background have diffe…
Krāsu un emociju attiecības vizuālajā komunikācijā: dažādu vecumposmu salīdzinoša analīze
2017
Darba tēma ir ‘’Krāsu un emociju attiecības vizuālajā komunikācijā: dažādu vecumposmu salīdzinoša analīze’’. Pētījuma problēma: Vai dažāda vecuma cilvēkiem atšķiras krāsu un emociju uztvere? Mērķis ir noskaidrot kā krāsu un emociju saistība mainās dažāda vecuma cilvēkiem. Darba uzdevumi ir iepazīties ar teoriju, noskaidrot krāsu un emociju saistību atšķirību dažādiem vecumposmiem, izmantojot aptauju un eksperimentu, apkopot datus un izdarīt secinājumus. Teorijā izmantotas trīs teorijas: vizuālās komunikācijas teorija, ekoloģiskās valences teorija, krāsas un emocijas. Metodoloģijā izmantotas trīs metodes: aptauja, kontentanalīze un eksperiments. Apkopojot rezultātus redzams, ka vecuma atšķir…