Since inverse problems are usually ill-posed it is necessary to use some method to reduce their deficiencies. The method that we choose is the regularization by derivative matrices. When a first derivative matrix is used ...

There is a necessity to study the behavior of some characteristic in the same sample unit over time in many situations, as accumulated dose of some nutrient. In practice, data structure of this nature generally establishes ...

Given a principally polarized abelian variety (A, Θ), we give a characterization of all elliptic curves that lie on A in terms of intersection numbers of divisor classes in its N´eron-Severi group.

The aim of this study was to evaluate the influence of means of support on hydrodynamic behavior of two anaerobic-aerobic fixed bed reactors (CAAFBR) on a bench scale, operated with hydraulic retention time (θ) of 12 and ...

El estudio de la socavación local en régimen supercrítico es crucial para comprender y mitigar los riesgos asociados con la erosión en ambientes fluviales de alta energía. El presente trabajo tiene como objetivo medir la ...