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 ...

This paper presents the implementation of the SPH Lagrangian method for the prediction of the oil slick diameter in the gravity-inertial spreading. Computer codes that predict the slick diameter generally use hybrid models ...

This paper introduces a framework to enhance network virtualization allocation in optical networks. A new control plane approach for the new generation of electrical and optical networks technologies is presented. To ...

The simulation of structural problems involving the deformations of volumetric bodies is of paramount importance in many areas of engineering. Although the use of tetrahedral elements is extremely appealing, tetrahedral ...

A stabilized finite element formulation for incompressible viscous flows is derived. The starting point are the modified Navier-Stokes equations incorporating naturally the necessary stabilization terms via a finite increment ...