Collision detection between several objects in a closed space is an interesting research topic in all those areas where objects must not penetrate one another, such as Computer Graphics, Computer Vision, Virtual ...

In this paper we develop numerical approximations of the wave equation in mixed form supplemented with non-reflecting boundary conditions (NRBCs) of Sommerfeld-type on artificial boundaries for truncated domains. We consider ...

This paper introduces box approximations as a new tool for path planning of closed-loop linkages. Box approximations are finite collections of rectangloids that tightly envelop the robot's free space at a desired resolution. ...

Durant els darrers tres anys, governs de tot el món han implementat diverses mesures de política pública per mitigar els efectes multifacètics del virus Covid-19 des de la seva declaració oficial com a pandèmia per ...

Urban systems are the locus of consumption and engines of economic growth in a globalized world. Major cities offer then the most striking examples of the environmental and energy problems that accompany intense urbanization: ...

The computation of the Newton direction is the most time consuming step of interior-point methods. This direction was efficiently computed by a combination of Cholesky factorizations and conjugate gradients in a specialized ...

Szemerédi s Regularity Lemma says that for any graph there is a partition of the vertices into a bounded number of parts such that edges between most different parts behave almost randomly. Recently, Tao gave a spectral ...

We study the structure of the accretion flow in the hard state of the black-hole X-ray binary MAXI J1820+070 with NICER data. The power spectra show broadband variability which can be fit with four Lorentzian components ...

We study some speech enhancement algorithms based on the iterative Wiener filtering method due to Lim-Oppenheim [2], where the AR spectral estimation of the speech is carried out using a second-order analysis. But in our ...