Channel knowledge is the important information required for good UWB communications. So many methods are available for UWB channel estimation. However, it is critical to find the multi-path clustered model of UWB transmission. In this paper, we present a new Innovative method with very simple and less complex channel estimation technique. We derived channel estimation equation for the Time Hopp...

Mesoporous TiO2-SiO2 nanocomposite (TS) was synthesized via sol-gel method and Amino-functionalized using 3-(aminopropyl) triethoxysilane. prepared amino-functionalized TiO2-SiO2 (NH2TS) was evaluated for eliminating radioactive Th(IV) ion in comparison with (TS). The prepared nanocomposites were characterized using FT-IR,  XRD, DSC-TGA...

We pr opose a method for predict ing chaotic time series that can be viewed eit her as a weighted superposit ion of linear maps or as a neural network whose hidden units have localized receptive fields. These receptive fields are constructed from the tra ining data by a binary-tree algorithm. The trainin g of the hidden-t o-output weights is fast because of the localization of the receptive fie...

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In this paper we propose an extension to the work of Lischinski et al [1] on combining hierarchical radiosity method and discontinuity meshing. The extension proposed here supports higher order radiosity function at the es timation s tep itself. We have carried out this extension using M ultiWavelet basis function s. Unlike th e multi-wavelet radiosity work of Gortler et al [2] which uses reg u...

We establish a method for giving lower bounds for the fundamental tone of elliptic operators in divergence form in terms of the divergence of vector fields. We then apply this method to the Lr operator associated to immersed hypersurfaces with locally bounded (r + 1)-th mean curvature Hr + 1 of the space forms Nn+ 1(c) of constant sectional curvature c. As a corollary we give lower bounds for t...

This study evaluates the accuracy of U/Th dates for young (6 a few thousand years old) reef corals, both living and fossil, and explores strategies for refining those dates. The high precision of the U/Th method (0 1^2%) for dating young corals is well-established. Earlier studies have demonstrated the method’s accuracy for select samples of known age. However, these studies have focused on typ...

We measured the size of the gain volume at the threshold of the spectral collapse in a solution of kiton red with colloidal suspensions of polystyrene spheres using a two-beam spatial-correlation method. In this method, the luminescence spectrum was measured as a function of the spatial separation of two excitation beams. It was found that the size of the gain volume at the threshold L(th), is ...

BACKGROUND Therapeutic hypothermia (TH) is one of few interventions that improve survival after a cardiac arrest with good neurological outcome. Current guidelines for cardiopulmonary resuscitation recommend TH in comatose adult patients after return of spontaneous circulation (ROSC) regardless of cardiac arrest location and cardiac rhythm during the event. AIM To evaluate level of TH impleme...