The purpose of this study was to evaluate the surface roughness of four conventional chemically cured glass ionomer cements (Fuji IX, Ketac Molar, Vidrion R and Vitromolar) commonly used in atraumatic restorative treatment (ART) immediately after material preparation. Twenty specimens of each glass ionomer cement were fabricated and surface roughness was measured after material setting. The spe...

The purpose of this study was to determine the minimum instrumentation size required for the effective penetration of irrigants and elimination of debris and smear layer from the apical third of the root canals. The mesiobuccal canals of 40 freshly extracted human mandibular first molar teeth were instrumented using the crown-down technique. The teeth were divided into four test groups accordin...

BACKGROUND The aim of the study was to evaluate the antimicrobial activity of the-potassium-titanyl-phosphate--the KTP laser and ozone in of primary root canals. MATERIALS AND METHODS Sixty primary incisor teeth were selected. The specimens were inoculated with 10 mL Enterococcus faecalis (E. faecalis). Groups: The KTP laser (1,5 W); gaseous ozone (150 s); sodium hypochlorite (NaOCl); saline ...

Cross entropy and mean squared error are typical cost functions used to optimize classi er performance. The goal of the optimization is usually to achieve the best correct classi cation rate. However, for many two-class real-world problems, the ROC curve is a more meaningful performance measure. We demonstrate that minimizing cross entropy or mean squared error does not necessarily maximize the...

We give an improved algorithm for calculating the exact null distribution of the two sample Mann Whitney Wilcoxon rank sum statistic. The algorithm modifies the update method of Smid using a minimal linked list which directs calculation of only those intermediate probabilities required for the final value. Using an efficient shortened representation of the list of required intermediate values, ...

Bu araştırmanın amacı Türkçe öğretmen adaylarının öğrenme stillerini bazı değişkenler açısından incelemektir. kapsamda araştırma 105 adayından oluşmaktadır. Tarama (survey) modelinde yürütülen verilerinin toplanmasında Grasha-Reichman Öğrenme Stili Ölçeği kullanılmıştır. Araştırma analizinde betimsel istatistikler, bağımsız gruplar için t-testi, örneklemler tek yönlü varyans analizi, mann whitn...

Bu araştırmanın amacı, otizm spektrum bozukluğu (OSB) tanılı ve normal gelişim gösteren (NGG) 9-12 yaş grubu çocuğa sahip annelerin çocuk yetiştirme tutumlarının incelenmesidir. Çalışma grubunu, 90 NGG 70 OSB’li çocuğu olan 160 anne oluşturmuştur. Verilerin toplanmasında Anne-Baba Tutum Ölçeği (ABTÖ)-C Formu kullanılmıştır. analizinde Kruskal Wallis-H Mann Whitney-U testlerinden yararlanılmıştı...

Advances in Information and Communications Technology (ICT) as well the present challenges of COVID-19 have led to a new paradigm causing an absolute or partial transition from in-person classroom teaching-learning online. There is little information available on research efforts that investigated impact online learning approach academic performance students mechanical engineering-based courses...

OBJECTIVE to determine the quality of life in the workplace for nursing staff at public institutions in Hermosillo, Sonora, Mexico. METHOD quantitative, correlational, cross-sectional, and comparative. We used a probabilistic sample of 345 nurses with data collected in 2013 using an instrument created by the authors to gather bio-socio-demographic data and the CVT-GOHISALO instrument with a C...