In this report we propose a solution to the direct problem of VSD optical imaging based on a neural field model of a cortical area and reproduce optical signals observed in various mammals cortices. We first present a biophysical approach to neural fields and show that these easily integrate the biological knowledge on cortical structure, especially horizontal and vertical connectivity patterns...

Investigations of rheological properties of ferrofluids have shown strong changes of the viscosity in magnetic fluids with an applied magnetic field. The change of the viscosity – the magnetoviscous effect – can theoretically be described with chain and structure formation under the influence of a magnetic field. Moreover, the formation of these structures leads to the appearance of viscoelasti...

We provide an assessment of the backpropagation (BP) method for processing GPS radio occultations using simulations as well as recent data from CHAMP and SAC-C. It is found that BP gives improved retrievals over the standard Doppler technique, even when multipath ambiguities are not completely removed. In addition, by being an amplitude-weighted algorithm, BP is robust in the presence of receiv...

Rosilene V. Ribeiro, R., Hirani, V., Senior, A., Gosby, A., Cumming, R., Blyth, F., Naganathan, V., Waite, L., Handelsman, D., Kendig, H., Seibel, M., Simpson, S., Stanaway, F., Allman-Farinelli, M., Le Couteur, D. (2017). Diet quality and its implications on the cardio-metabolic, physical and general health of older men: the Concord Health and Ageing in Men Project (CHAMP). British Journal of ...

The gradient on a Riemannian manifold X is lifted to the connguration space X on X via a pointwise identity. This entails a norm equivalence that either holds under any probability measure or characterizes the Poisson measures, depending on the tangent space chosen on X. More generally, this approach links carr e du champ operators on X to their counterparts on X , and also includes structures ...

In this paper we critically analyze the so far performed and proposed tests for measuring the general relativistic Lense-Thirring effect in the gravitational field of the Earth with some of the existing accurately tracked artificial satellites. The impact of the 2nd generation GRACE-only EIGEN-GRACE02S Earth gravity model and of the 1st CHAMP+GRACE+terrestrial gravity combined EIGEN-CG01C Earth...

Over the last 20 years, a large number of instruments have provided plasma density measurements in Earth's topside ionosphere. To utilize all collected observations for empirical modeling, it is necessary to ensure that they do not exhibit systematic differences and are adjusted same reference frame. In this study, we compare satellite from Gravity Recovery Climate Experiment (GRACE), Constella...

A basic theorem from differential geometry asserts that, if the Riemann curvature tensor associated with a field C of class C2 of positive-definite symmetric matrices of order n vanishes in a connected and simply-connected open subset Ω of Rn, then there exists an immersion Θ ∈ C3(Ω;Rn), uniquely determined up to isometries in Rn, such that C is the metric tensor field of the manifold Θ(Ω), the...