Assistive software is designed to enable access to a computer interface for people with a range of disabilities. At Newcastle University we currently have a range of assistive software available across the campus computer network but much of this software, such as screen-reading and text magnification packages, is complex and requires significant training before it can be used proficiently. Scr...

An econometric model is specified in which an individual’s income and the income mix of the neighbourhood in which the individual resides are endogenous, thus providing a holistic model of phenomena that previously have been fragmented into neighbourhood effects and neighbourhood selection literatures. To overcome the biases from selection and endogeneity, the parameters of this model are estim...

Research using biometric data relies on consistent measurements within, and often among, observers. However, research into the relative importance of intraand interobserver variability is limited. More importantly, the influence of biometric variability on accurate quantification of biometric-based condition indices has not been analysed: it is unclear whether multiple errors become magnified o...

Conceptual studies and numerical simulations are performed for imaging devices that transform a near-field pattern into magnified far-zone images and are based on high-order spatial transformation in cylindrical domains. A lens translating a near-field pattern from an almost circular input boundary onto a magnified far-field image at a flat output boundary is considered. The lens is made of a m...

Two-spin correlations generated by interactions which decay with distance r as r−1−σ with −1 < σ < 0 are calculated for periodic Ising chains of length L. Mean-field theory indicates that the correlations, C(r, L), diminish in the thermodynamic limit L → ∞, but they contain a singular structure for r/L → 0 which can be observed by introducing magnified correlations, LC(r, L)−∑r C(r, L). The mag...

Dry air, water vapor, hydrometeors, and other particulates (sand, dust, aerosols, and volcanic ash) in the atmosphere introduce microwave propagation delays. These delays must be properly characterized to achieve the highest accuracy in surveying and atmospheric sensing using Global Positioning System (GPS) signals. In this paper we review the theory of microwave propagation delays induced by t...

Using decade-long continuous observations of tree mortality and predawn leaf water potential (ψpd) at the Missouri Ozark AmeriFlux (MOFLUX) site, we studied how the mortality of important tree species varied and how such variations may be predicted. Water stress determined interannual variations in tree mortality with a time delay of 1 year or more, which was correlated fairly tightly with a nu...

Untreated wastewater from the Mexico City basin has been used for decades to irrigate cropland in the Mezquital Valley, State of Hidalgo, Mexico. Excess irrigation water recharges the near-surface aquifer that is used as a domestic water supply source. We assessed the groundwater quality of three key groundwater sources of domestic water by analyzing for 24 trace metals, 67 target base/neutral/...