The inference process is inefficient when employing conventional sampling tech- niques to sample from hidden populations and those of difficult access. The method of sampling by reference or “Link-Tracing” (“Snowball ...

En varias investigaciones se ha estudiado la aplicación de diversas estrategias de control en la propagación de enfermedades en una población dada. Ahora bien, tarea difícil es encontrar la combinación de estrategias que ...

In recent years, vector-borne diseases are taking serious attention from researchers and health specialist across the world. The emergence of vector-borne diseases, such as Chikungunya and Zika, coupled with outbreaks ...

A previously introduced notion of categorical interior operator is studied in the category of groups. The main purpose of this research is to try to find out how many of the general results that hold for a categorical ...

A problem of interest in finite dynamical systems is to determine when such a system reaches equilibrium, i.e., under what conditions is it a fixed point system. Moreover, given a fixed point system, how many time steps ...

In a supervised classification problem, when the vectors of data are direction- al, it means, that they take values on a k-dimensional sphere, the application of the algorithms of pattern recognition as k-nearest-neighbour ...

This research studies the behavior of a numerical technique, known as Continuous Orthonormalization (CO), when computing the eigenfunction for the Orr-Sommerfeld equation (OSE). The hydrodynamic stability region of moving ...

A general notion of T1-separation with respect to an arbitrary interior operator is introduced in the category Top of topological spaces. This is done by means of the concept of categorical interior operator. This naturally ...

There are many preconditioners for linear systems, for example, P = I + Smax developed by Kotakemori in [9] and its extension P˜ developed by Arenas & Yong in [1]. These preconditioners were built to speed up the convergence ...

Working from the Galois theory, we define linear groups via group schemes. We study different properties of these groups such as connectedness, Lie algebras associated to them, which determine their smoothness. Lastly we ...