We study the influence of the intensity of light and the wavelength of an imposed parallel striped mask on the development of striped Turing patterns. Depending on the ratio R ) λF/λP of the wavelength of the mask to the wavelength of the natural pattern and on the amplitude of forcing, stripes develop parallel or perpendicular to the orientation of the mask. For R near 1.5 or 3, zigzag pattern...

In this paper, an improved algorithm for pre-filtering 2D polygons is presented. The part of the polygon within the mask of a filter is decomposed into basic component regions whose parameters can be easily computed. Given the parameters, the integral of the filter over the basic component region can be looked up from a table or even be computed with a closed-form solution. The integral or its ...

localizing the optic disc (od) in retinal fundus images is of critical importance, since it is very similar to hard exudates (found in pathology) in color and brightness. because of the importance of od localization in clinical applications, many techniques have been developed. in this paper, we present the results obtained from two methods, correlation and least square, to approximate the opti...

The vector median filter(VMF) is a useful and common tool for noise removal in color image processing[HPP04,PV00,AHN90]. The drawback of the approach in its general form is the high computational cost. Indeed it takes O(n×m×ms) distance evaluations for computing the filter response, where ms ist the mask size and n×m the dimension of the image. In this contribution we propose a general algorith...

In this paper, an improved algorithm for prefiltering two-dimensional polygons is presented. The part of the polygon within the mask of a filter is decomposed into basic component regions whose parameters can be easily computed. Given the parameters, the integral of the filter over the basic component region can be looked up from a table or even be computed with a closed-form solution. The inte...

conclusions using eye mask can significantly improve the sleep quality in cardiac patients. therefore, nurses are recommended to use eye mask in combination with current treatments for improving patients’ sleep quality. results after the study, the median scores of the subjective sleep quality, the sleep latency, the sleep duration, the habitual sleep efficiency, and the sleep disturbances doma...

Introduction: One of the most common problems during laryngoscopy involves sympathetic system stimulation and the subsequent hemodynamic changes. It is a key measure to maintain the hemodynamic stability of patients with cardiovascular diseases during induction of anesthesia. This study attempted to compare the hemodynamic effects of laryngeal mask airway and combitube. Methods: This prospec...