A univariate compactly supported reenable function can always be factored into B k f, with B k the B-spline of order k, f a compactly supported distribution, and k the approximation orders provided by the underlying shift-invariant space S(). Factorizations of univariate reenable vectors were also studied and utilized in the literature. One of the by-products of this article is a rigorous analy...

We study convergent scalar d-variate subdivision schemes satisfying sum rules of order k ∈ N, with dilation matrix 2I . Using the results of Möller and Sauer in [18], stated for general expanding dilation matrices, we characterize the structure of the mask symbols of such schemes by showing that they must be linear combinations of shifted box spline generators of a quotient polynomial ideal J ....

Noise can occur during image capture, transmission, or processing phases. Image de-noising is a very important step in image processing, and many approaches are developed in order to achieve this goal such as the Gaussian filter which is efficient in noise removal. Its smoothing efficiency depends on the value of its standard deviation. The mask representing the filter presents generally static...

Background: COVID-19 pandemic mitigation requires evidence-based strategies. Because can spread via respired droplets, most US states mandated mask use in public settings. Randomized control trials have not clearly demonstrated efficacy against respiratory viruses, and observational studies conflict on whether predicts lower infection rates. We hypothesized that statewide mandates were associat...

results in the i-gel group, the success rate was 66.7% for placement on the first attempt, 16.7% for the second, and 3.33% for the third attempt. in the lma group, the success rates were 80.6% and 12.9% for the first and second attempts, respectively. failure in placement occurred in four cases in the i-gel and two cases in lma groups. the mean insertion time was not significantly different bet...