AIM To evaluate the ability of dental students to match shades under three various light conditions. MATERIALS AND METHODS Sixty senior dental students participated in this study. All students were tested for color deficiency using Ishahara's tests. Nine classical vita shade tabs were randomly selected and their identification codes were concealed. The students were asked to match these 9 sel...

The same target luminance in different contexts can elicit markedly different perceptions of brightness, a fact that has long puzzled vision scientists. Here we test the proposal that the visual system encodes not luminance as such but rather the statistical relationship of a particular luminance to all possible luminance values experienced in natural contexts during evolution. This statistical...

this article provides an overview of natural phonological processes in the dialect of sistani persian spoken in iranian sistan, and reviews theoretical implications of these processes. a representative selection of processes in the language is examined in reference to conditioning by surrounding segments and conditioning in reference to syllable structure. while assimilation and dissimilation a...

making an investigation into the traditional architecture found in iran’s kavir, one can see an architecture that has emerged by merely changing the form of the face of the earth; this [complex] architecture is nothing but an intellectual use of simple land and water which simultaneously accords with the islamic environmental principles [ieps]. in this article, following a descriptive analysis ...

Title of dissertation: EXPLOITING COLLECTIVE EFFECTS TO DIRECT LIGHT ABSORPTION IN NATURAL AND ARTIFICIAL LIGHT-HARVESTERS Chris Schroeder, Doctor of Philosophy, 2016 Dissertation directed by: Professor Luis A. Orozco Joint Quantum Institute, University of Maryland Department of Physics and National Institute of Standards and Technology Photosynthesis – the conversion of sunlight to chemical en...

The recent debate in the RoboCup middle-size community about natural light conditions shows that a more in-depth analysis of the problems incurred by this is necessary in order to draft out a focused and realistic roadmap for research. Based on real-world images taken under varying lighting conditions, we performed descriptive and statistical analysis of the effects on color-based vision routin...

In this paper we present a framework for robot selflocalization in the robocup middle size league. This framework comprises an algorithm for robust selflocalization and a set of benchmarks which can be used offline to test other algorithms and to compare their outcomes with our results. The algorithm is part of our competition team BrainstormersTribots which won the Robocup German Open 2004. Th...