BACKGROUND & AIMS Bioelectrical impedance analysis (BIA) provides a simple method to assess changes in body composition. Raw BIA variables such as phase angle provide direct information on cellular mass and integrity, without the assumptions inherent in estimating body compartments, e.g. fat-free mass (FFM). Phase angle is a strong functional and prognostic marker in many disease states, but da...

BACKGROUND Phase angle is an indicator based on reactance and resistance obtained from bioelectrical impedance analysis (BIA). Although its biological meaning is still not clear, phase angle appears to have an important prognostic role. OBJECTIVE The aim of this study was to estimate population averages and SDs of phase angle that can be used as reference values. DESIGN BIA and other method...

This paper presents a weighted co-occurrence phase histogram (WCPH) for representing local characteristics of texture pattern and applies it to iris recognition. We first introduce a weighting function that enables the phase angle of the image gradient at one pixel to contribute smoothly to several adjacent histogram bins. This accounts for the uncertainty of phase angle estimation brought by t...

A study using plasma port single-pulsed discharge is performed on the flow control of asymmetrical vortices over slender conical forebody. The different circumferential steady and unsteady pressure distributions are measured in the wind tunnel test. At the same time, the local side force, the increment of local side force and the overall side force and moment are calculated with the circumferen...

A geometric graph in the plane is angle-monotone of width γ if every pair of vertices is connected by an angle-monotone path of width γ, a path such that the angles of any two edges in the path differ by at most γ. Angle-monotone graphs have good spanning properties. We prove that every point set in the plane admits an angle-monotone graph of width 90◦, hence with spanning ratio √ 2, and a subq...

Understanding the physics of microscale two-phase flow is important for a broad variety of engineering applications including compact PEM fuel cells and heat exchangers. The low Bond number and confined geometry make it critical to consider both the surface tension at the liquid–gas interfaces and the surface forces acting at the channel boundaries. Within the framework of a numerical volume of...

BACKGROUND Bioelectrical Impedance (BIA) derived phase angle is increasingly being used as an objective indicator of nutritional status in advanced cancer. Subjective Global Assessment (SGA) is a subjective method of nutritional status. The objective of this study was to investigate the association between BIA derived phase angle and SGA in advanced colorectal cancer. METHODS We evaluated a c...