Objective: To evaluate the effect of different preparations fluoride gels on salivary pH albino rats. Material and Methods: This experimental study consisted 40 Albino rats randomly divided into four equal groups. Group A was control group received no intervention. Experimental B a topical application 0.2% sodium gel. C stannous gel 0.4%. D APF (1.23% acidulated phosphate gel). The were applied...

Dental caries occurs due to the demineralization of tooth structure caused by microorganisms in colonies called biofilms. One involved dental is Streptococcus mutans. Oral mouthwash, addition mechanical cleaning, known prevent growth oral microorganisms. Mangosteen as an anti-cancer ingredient with high anti-bacterial properties. This study aims identify effectiveness mangosteen skin extract (G...

This research presents a hybrid approach for path planning of autonomous underwater vehicles (AUVs). During planning, static obstacles affect the desired and distance which result in collision penalties. In this study, merits grey wolf optimization (GWO) genetic algorithm (GA) bionic-inspired algorithms are integrated to implement (HGWO) allows AUVs reach their destination safely an obstacle ri...

The research aimed to carry out an epidemiological survey comparing the cases of COVID-19 in moments before and after electoral period Brazil, pointing influences federal public administration increase incidence consequent mortality. This is a quantitative study with critical approach, based on secondary data from Information Notifiable Diseases System (SINAN) found Technology Department Unifie...

Purpose – The article aims to identify the relationship between communication shock caused by COVID-19 pandemic, digitalization of channels in transaction process, and exports Polish enterprises. Research method following methods are used: descriptive statistics, correlation analysis, non-parametric one-way analysis variance (Kruskal-Wallis test) based on data from a diagnostic survey conducted...

We explore criteria that data must meet in order for the Kruskal-Wallis test to reject the null hypothesis by computing the number of unique ranked 1 data sets in the balanced case where each of the m alternatives has n observations. We show that the Kruskal-Wallis test tends to be conservative in rejecting the null hypothesis, and we offer a correction that improves its performance. We then co...

Let P be a set of points in R. We propose GeoFilterKruskal, an algorithm that computes the minimum spanning tree of P using well separated pair decomposition in combination with a simple modification of Kruskal’s algorithm. When P is sampled from uniform random distribution, we show that our algorithm runs in O(n log n) time with probability at least 1−1/n for a given c > 1. Although this is th...

A multi-way factor analysis model is introduced for tensor-variate data of any order. Each data item is represented as a (sparse) sum of Kruskal decompositions, a Kruskalfactor analysis (KFA). KFA is nonparametric and can infer both the tensor-rank of each dictionary atom and the number of dictionary atoms. The model is adapted for online learning, which allows dictionary learning on large data...

Kruskal’s extension solves the problem of the arrow of time of the “Schwarzschild solution” through combining two Hilbert manifolds by a singular coordinate transformation. We discuss the implications for the singularity problem and the definition of the mass point. The analogy set by Rindler between the Kruskal metric and the Minkowski spacetime is investigated anew. The question is answered, ...