The theory of the acoustics of patchy-saturation in porous media is used to analyze experimental data on wave velocity and attenuation in partially water saturated limestones. It is demonstrated that the theory can be used to deduce the value of V /A, the ratio of the volume to area of the water patch, and l f , the Poisson size of the water patch. One can " hear " the shape of a patch if the p...

An effective one-step method has been developed to synthesize CuPd bimetallic nanowire networks. Investigation of the growth process revealed that the nanowires were formed by attachment of spherical particles and strongly influenced by interactions between surface ligands and metals. The morphology of CuPd nanoparticles is tuned via changing the molecular weight of polyvinylpyrrolidone (PVP) a...

Using germ-free animals, Rawls et al. (2006) reveal that the gut of a given host can be colonized by the microbiota of another vertebrate. Remarkably, the recipient host then shapes the composition of the non-native microbiota to more closely resemble that of its native consortium.

We use an extension of Sunada's theorem to construct a nonisometric pair of isospectral simply connected domains in the Euclidean plane, thus answering negatively Kac's question, "can one hear the shape of a drum?" In order to construct simply connected examples, we exploit the observation that an orbifold whose underlying space is a simply connected manifold with boundary need not be simply co...

Sequences of nodal counts store information on the geometry (metric) of the domain where the wave equation is considered. To demonstrate this statement, we consider the eigenfunctions of the Laplace-Beltrami operator on surfaces of revolution. Arranging the wave functions by increasing values of the eigenvalues, and counting the number of their nodal domains, we obtain the nodal sequence whose ...

General approaches to object shape matching require a good correspondence between two sets of contour points of the object shapes. In this paper, we propose an effective and novel approach to help solving the problem with the concept of the possibilistic fuzzy alignment based on local features (PFALF). PFALF uses the positional information and the features generated by shape context (SC) or inn...

Compton scattering is one of the dominant interaction processes in germanium for photons with an energy of around two MeV. If a photon scatters only once inside a germanium detector, the resulting event contains only one electron which normally deposits its energy within a mm range. Such events are similar to Ge neutrinoless double beta-decay (0νββ) events with just two electrons in the final s...

Chandra Galactic Center Survey detected nearly 1000 X-ray point-like sources in the 2×0.8 sky region around the Galactic Center. The corresponding area is about 280 × 110 pc at a distance of 8 kpc. In this paper, we study the spatial and luminosity distributions of these sources according to their spectral properties. Eighteen bright sources detected are used to fit jointly an absorbed power-la...

This paper presents a learning based approach to tracking articulated human body motion from a single camera. In order to address the problem of pose ambiguity, a one-to-many mapping from image features to state space is learned using a set of relevance vector machines, extended to handle multivariate outputs. The image features are Hausdorff matching scores obtained by matching different shape...