Factors that influence and change medical engagement in Australian not for profit hospitals.

Purpose: The study aims to assess medical engagement levels at two teaching hospitals and a 500 bed private hospital in two states operated by the same health care provider and to describe individual and organisational factors that influence and change medical engagement.

Design/methodology/approach: A survey was emailed to all junior and senior medical staff, seeking responses to 30 pre-determined items. The survey used a valid and reliable instrument which provided an overall index of medical engagement.

General multivariate linear modeling of surface shapes using SurfStat.

Although there are many imaging studies on traditional ROI-based amygdala volumetry, there are very few studies on modeling amygdala shape variations. This paper presents a unified computational and statistical framework for modeling amygdala shape variations in a clinical population. The weighted spherical harmonic representation is used to parameterize, smooth out, and normalize amygdala surfaces.

Topological FDR for neuroimaging.

In this technical note, we describe and validate a topological false discovery rate (FDR) procedure for statistical parametric mapping. This procedure is designed to deal with signal that is continuous and has, in principle, unbounded spatial support. We therefore infer on topological features of the signal, such as the existence of local maxima or peaks above some threshold.

Functionalization and dissolution of nitric acid treated single-walled carbon nanotubes.

We report an investigation of the nature and chemical functionalization of nitric acid treated single-walled carbon nanotubes (SWNTs). SWNTs washed with diluted sodium hydroxide solutions were characterized by near-IR, mid-IR, and Raman spectroscopy as well as TEM, and the remaining carboxylic acid content was determined to assess the effect of base washing on the removal of carboxylated carbon fractions, which are generated by the nitric acid treatment. It was found that even after exhaustive washing with aqueous base the purified SWNTs contain carboxylic acid groups in sufficient quantity to prepare high quality soluble SWNT materials by covalent functionalization with octadecylamine.