The shallow-water equations model hydrostatic flow below a free surface for cases in which the ratio between the vertical and horizontal length scales is small and are used to describe waves in lakes, rivers, oceans, and the atmosphere. The equations admit discontinuous solutions, and numerical solutions are typically computed using high-resolution schemes. For many practical problems, there is...

We present a family of high-resolution, semi-discrete central schemes for hyperbolic systems of conservation laws in three space dimensions. The proposed schemes require minimal characteristic information to approximate the solutions of hyperbolic conservation laws, resulting in simple black box type solvers. Along with a description of the schemes and an overview of their implementation, we pr...

The communication latency presents a major challenge to achieving high responsiveness for Internet-based cooperative editing systems. In this paper, we propose conflict control locking (post-locking) schemes for conflict resolution in real-time object-based cooperative graphics editors. With these schemes, no locking request is needed before applying an editing operation to an object, instead, ...

Watermarking schemes for authentication purposes are characterized by three factors namely security, resolution of tamper localization, and embedding distortion. Since the requirements of high security, high localization resolution, and low distortion cannot be fulfilled simultaneously, the relative importance of a particular factor is application-dependent. Moreover, block-wise dependence is r...

This paper is concerned with the numerical analysis of the behavior of a homogeneous tubular reactor in which a cubic autocatalytic reaction is coupled to diffusion and convection transport. The set of one-dimensional partial differential equations describing the reaction-diffusion-convection system is analyzed using different standard reduction techniques (finite difference, orthogonal colloca...

We report simulations of the inspiral and merger of binary neutron stars performed with WhiskyTHC, the first of a new generation of numerical relativity codes employing higher than second-order methods for both the spacetime and the hydrodynamic evolution. We find that the use of higher-order schemes improves substantially the quality of the gravitational waveforms extracted from the simulation...