Upper airway obstruction during adulthood is associated with cardiovascular morbidity; cardiovascular consequences of childhood upper airway obstruction are less well established. This study aimed at investigating the effect of childhood upper airway obstruction on respiratory sinus arrhythmia as a measure of cardiac vagal modulation during night-time sleep. Overnight polysomnography was conduc...

The cost associated with developing flight control forms a significant part of the overall development cost. The increased demand for greater functionality and for extending the domain of applicability of future launchers leads to higher complexity of the GNC algorithms. Furthermore, there is also a need for a responsive design methodology, which can quickly adapt to changes in the requirements...

K e y w o r d s J e t t i s o n i n g system, Retro-rocket, Jet damping, Pyro, Relative velocity, Relative distance, Launch vehicle. N O M E N C L A T U R E Az launch azimuth (deg) h altitude of separation (km) I inertia tensor (kg-m 2) t Time (s) mM, ms mass of the ongoing and spent bodies (kg) RE, Rp, Rs Earth's equatorial radius, polar radius, radius at the surface (km) r, q, p body angular ...

The singular value decomposition (SVD) of a 2-by-2 complex matrix does not occur as frequently as that of a 2-by-2 real upper triangular matrix. The commonly used QR method for SVD consists of two stages. In the first stage, a matrix is reduced to bidiagonal form using, say, Householder transformations on both sides. In the second stage, the bidiagonal matrix resulted from the first stage is di...

BACKGROUND AND AIMS The role of angiogenesis in progression and metastasis of gastric cancer has been studied over the last years. The aim of our study was to assess the microvessel density and vascular endothelial growth factor (VEGF) expression in correlation with prognosis, survival and the risk for upper gastrointestinal (GI) bleeding as well. METHOD We prospectively assessed angiogenesis...

IMPORTANCE Defects of the central upper lip present a challenge. A variety of techniques have been described, but most tend to efface the natural contours present in the philtrum and the cutaneous-mucosal vermilion border (Cupid's bow). Furthermore, the techniques typically require a second-stage procedure to improve the upper lip aesthetic. We discuss a novel technique using bilateral transpos...

The design, implementation and performance of a parallel algorithm for reduction of a matrix pair in block upper Hessenberg-Triangular form (Hr, T ) to upper Hessenberg-triangular form (H, T ) is presented. This reduction is the second stage in a two-stage reduction of a regular matrix pair (A, B) to upper Hessenberg-Triangular from. The desired upper Hessenberg-triangular form is computed usin...

OBJECTIVES To describe oropharyngeal stenosis (OPS), a potential complication of multilevel, single-stage upper airway surgery involving lingual tonsillectomy in children, and to discuss the manner in which OPS may be managed successfully. DESIGN Case series with an average follow-up of 12 months. SETTING Tertiary care children's hospital. PATIENTS Medical charts were reviewed for 104 pat...