the helicopter-borne electromagnetic (hem) frequency-domain exploration method is an airborne electromagnetic (aem) technique that is widely used for vast and rough areas for resistivity imaging. the vast amount of digitized data flowing from the hem method requires an efficient and accurate inversion algorithm. generally, the inverse modelling of hem data in the first step requires a precise a...

Modelling patient flow in health care systems is considered vital in understanding the system's activity and may therefore prove to be useful in improving their functionality. A measure, extensively used, is the average length of stay which, although easy to calculate and quantify, assumes normally distributed data thus making the subsequent modelling of resources totally unsuitable. In fact, s...

This study explored the relationships between maternal modelling of eating behaviours with reported symptoms of maternal eating psychopathology, anxiety and depression. Mothers (N = 264) with a child aged 1.5 to 8 years completed three self-report measures designed to assess modelling of eating behaviours, eating psychopathology and levels of anxiety and depression. The study found that higher ...

Principal-agent theory encapsulates a tradition of rational choice modeling, in which some actor(s) (the principal(s)) uses whatever actions are available, to provide incentives for some other actor(s) (the agent(s)) to make decisions that the principal most prefers. Because principal-agent theory focuses on the responsiveness of the agents decisions to the principal’s goals, and how this respo...

Health insurance fraud increases the inefficiency and inequality in our society. To address the widespread problem, cost effect techniques are in need to detect fraudulent claims. With a dataset from medical expense insurance in China, we propose a discrete choice model to identify predicting factors of fraudulent claims, and we address the major limitations of discrete choice model by consider...

1 HIV and STI Department. Health Protection Agency Centre for Infections, UK; 2 Department of Infectious Disease Epidemiology, Imperial College Faculty of Medicine, London, UK; 3 Sigma Research, University of Portsmouth, UK; 4 Centre for Sexual Health and HIV Research, University College London, London, UK; 5 Statistics and Modelling and Bioinformatics Department, Health Protection Agency Centr...

BACKGROUND The research question how contextual factors of neighbourhood environments influence individual health has gained increasing attention in public health research. Both socioeconomic neighbourhood characteristics and factors of the built environment play an important role for health and health-related behaviours. However, their reciprocal relationships have not been systematically revi...