In this paper we present a framework for the creation of community web portals. The framework provides the necessary infrastructure for the management of several portlets, which divide the available space for information display on the portal page. The management infrastructure includes authentication, layout and user profile services. The framework also provides a portlet infrastructure for di...

Reversible image watermarking enables the embedding of copyright or useful information in a host image without any loss of information. Here a novel technique to improve the embedding capacity i.e. reversible watermarking using an adaptive prediction error expansion & pixel selection is proposed. This work is an improvement in conventional Prediction Error Expansion by adding two new techniques...

Gesture recognition is essential for human – machine interaction. In this paper we propose a method to recognize human gestures using a Kinect® depth camera. The camera views the subject in the front plane and generates a depth image of the subject in the plane towards the camera. This depth image is then used for background removal, followed by generation of the depth profile of the subject. I...

it is common in the literature to confront the measured 137cs depth profile with the analytical solution of 1d advection-dispersion equation (ade) calibrated for the time of sampling which is a pure transport model useful for undisturbed soils. the degree of accuracy is strongly associated to the soil texture. it has been proven that soil with high clay content can retain radiocesium better. mo...

Very high resolution (R ∼ 160000) absorption line measurements of the interstellar Ca ii K and Na i D lines and medium resolution (R ∼ 50000) measurements of the interstellar Ti ii (3384 Å) line towards three Galactic halo stars are presented. The data have signal-to-noise ratios of ∼ 90–240. The sightlines studied clearly show several intermediate-high velocity interstellar clouds with local s...