In this paper, we present a novel postprocessing technique based on the theory of the projection onto convex sets (POCS) in order to reduce the blocking artifacts in digital high definition television (HDTV) images. By detecting and eliminating the undesired high-frequency components, mainly caused by blocking artifacts, we propose a new smoothness constraint set (SCS) and its projection operat...

STATEMENT OF PROBLEM Patterns for custom cast posts and cores can be fabricated either by the direct or the indirect technique. Which technique is more accurate is unknown. PURPOSE The purpose of this in vitro study was to investigate the effect of pattern fabrication technique on the accuracy of post fit. MATERIAL AND METHODS Ten intact extracted premolar teeth with a single canal and simi...

Patients affected by post-thrombotic syndrome at clinical stage C6 CEAP present invalidating symptomatology often not controllable with conservative therapies. Deep vein valves reconstruction enables the patient to achieve clinical benefit. Femoral transposition and venous segment transplantation are not feasible in all situations, due to anatomical and technical limitations. These reasons have...

OBJECTIVE To evaluate the use of modified brachioplasty, investigating in late postoperative complications and satisfaction with the outcome, in women previously submitted to bariatric surgery. METHODS The population (N = 18, age 49.2 ± 11.3 years), which had undergone brachioplasty 25.2 ± 11.9 months after the bariatric procedure, was contacted after 31.7 ± 38.8 additional months. Surgical c...

INTRODUCTION AND OBJECTIVES Tonsillectomy represents one of the main surgical procedures for the otolaryngologist, with haemorrhage being the most common postoperative. The objective of this study was to determine the post-tonsillectomy haemorrhage rate, and relate the surgical technique, diagnosis and patient age. METHODS This was a retrospective study, from April 2012 to January 2014, cover...

OBJECTIVES Recent publications have identified different rates of postoperative hemorrhage between "cold" tonsillectomy techniques and "hot" tonsillectomy techniques, generally identifying lower bleeding rates after cold techniques. Data from a prospective institutional review were analyzed to determine the relative risk factors for post-tonsillectomy hemorrhage among different techniques and b...

The power spectrum estimation for a multichannel autoregressive process using prewhitened and postcoloring technique, which was originally developed for a single channel, is proposed. In order to make the extension, the Cholesky decomposition of the inverse autocorrelation matrix for a multichannel autoregressive process is discussed and the autoregressive model order selection for a multichann...

Background: Resin cements are widely used for cementation of FRC posts, but their bond strength can be influenced by cement type and cementation technique. The aim of this study was to determine the effect of type of resin cement and cementation technique on the bond strength of fiber posts. Methods: Forty five extracted mandibular premolars with a minimum roo...

This paper presents an adaptive time-domain post-filtering technique based on the modified Yule-Walker filter. Conventionally, post-filtering is derived from an original LPC spectrum [1]. In general, this time-domain technique produces unpredictable spectral tilt that is hard to control by the modified LPC synthesis, inverse and high pass filtering and causes unnecessary attenuation or amplific...

INTRODUCTION Tonsillectomy is a frequently used, low-risk surgical procedure. The post-tonsillectomy haemorrhage occurs rarely, but is a life-threatening complication. Some studies show that the surgical technique affects the haemorrhage rate. AIMS To analyse the post-tonsillectomy haemorrhage rate, and to determine whether the effect of the surgical technique on the haemorrhage rate exists. ...