A rainbow matching in an edge-colored graph is a which no two edges have the same color. The color degree of vertex v number distinct colors on incident to v. Kritschgau [Electron. J. Combin. 27(3), 2020] studied existence matchings G with average at least 2k, and proved some sufficient conditions for marching size k G. include that $$|V(G)|\ge 12k^2+4k$$ , or properly 8k$$ . In this paper, we ...

Abstract:Islamic painting is clearly influenced by the fundamental principles of Islamic thought. Not only this affects the meaning and content but also affects the form and structure of painting influenced the principles of Islamic thought. For example, the Quran as the main reference of Islamic thought expresses Islamic thought about color. We know that the color is the emission of the light ...

background and objectives: pulse oximetry is the most common technique for monitoring hemoglobin oxygen saturation (spo2). different colors and brands of nail polish may cause disturbance in the reading and interpretation of oxygen saturation. the aim of this study was to determine the effect of different colors of nail polish on oxygen saturation measured by pulse oximeter. methods: thirty hea...

purpose : to determine the distribution of iris colors in the population of tehran and to assess possible associations between iris color and ocular disorder methods : through a stratified random cluster sampling approach, 160 clusters were selected in different municipality districts of tehran, and the approached households were invited to a clinic. after the initial interview, all participant...

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...

Unlike the Metelli monochrome transparencies, when overlays and their backgrounds have chromatic content, the inferred surface colors may not always be physically realizable, and are in some sense "imaginary." In these cases, the inferred chromatic transmittance or reflectance of the overlay lies outside the RGB spectral boundaries. Using the classical Metelli configuration, we demonstrate this...