نتایج جستجو برای: colors (C)
تعداد نتایج: 1072323 فیلتر نتایج به سال:
Background and Objective: Nowadays, colors are widely used in various food industries, including sweets, confectionery, ice cream, beverages, and so on. Colors can have asthma-like complications, hyperactivity in children and cancers. Therefore, the aim of this study was to evaluate the direct mutagenic effect of several types of natural colors via Ames method. Materials and Methods: After pre...
{sl let $[n]={1,dots, n}$ be colored in $k$ colors. a rainbow ap$(k)$ in $[n]$ is a $k$ term arithmetic progression whose elements have different colors. conlon, jungi'{c} and radoiv{c}i'{c} cite{conlon} prove that there exists an equinumerous 4-coloring of $[4n]$ which is rainbow ap(4) free, when $n$ is even. based on their construction, we show that such a coloring of ...
{sl Let $[n]={1,dots, n}$ be colored in $k$ colors. A rainbow AP$(k)$ in $[n]$ is a $k$ term arithmetic progression whose elements have different colors. Conlon, Jungi'{c} and Radoiv{c}i'{c} cite{conlon} prove that there exists an equinumerous 4-coloring of $[4n]$ which is rainbow AP(4) free, when $n$ is even. Based on their construction, we show that such a coloring of $[4n]$...
color has the ability to inspire, excite, soothe, heal and even agitate. this is particularly true for children, who can be extra sensitive to color's impact. so the importance of picking out just the right color for a young child's room shouldn't be underestimated. when choosing colors to use for your rooms home it's important to think about the mood you want to create and ...
A mixed hypergraph H = (X, C,D) consists of the vertex set X and two families of subsets: the family C of C-edges and the family D of D-edges. In a coloring, every C-edge has at least two vertices of common color, while every D-edge has at least two vertices of different colors. The largest (smallest) number of colors for which a coloring of a mixed hypergraph H using all the colors exists is c...
Visual cryptography is a method that makes use of the characteristics of human vision and it requires neither the knowledge of cryptography nor the complex calculations. This method was first proposed by Naor and Shamir, its implementation is simple, it has been extended to an secrect sharing (k, n) in which n shares are made from the image and they are distributed among n participants. Moreov...
Introduction: Azo dyes are the most commonly used colors in textile industry. These colors are among the pollutant materials in the environment. Moreover, they are discharged into the environment in combination with industrial wastewater and pollute the ecosystem. The purpose of this study was to isolate and detect bacteria biodegrading Methyl Red and Rubin Dyprsy colors from dye waste water. ...
In this paper, we present a method for color reduction of Persian carpet cartoons that increases both speed and accuracy of editing. Carpet cartoons are in two categories: machine-printed and hand-drawn. Hand-drawn cartoons are divided into two groups: before and after discretization. The purpose of this study is color reduction of hand-drawn cartoons before discretization. The proposed algorit...
We bound the hereditary discrepancy of a hypergraph H in two colors in terms of its hereditary discrepancy in c colors. We show that herdisc(H, 2) ≤ Kcherdisc(H, c), where K is some absolute constant. This bound is sharp.
We present a randomized polynomial time algorithm that colors almost every graph on n vertices in n/(log2 n+ c √ log2 n) colors for every positive constant c. 1998 Published by Elsevier Science B.V. All rights reserved.
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