15 citations
13 papers
Comparing the impact of subfields in scientific journals
Xiomara S. Q. Chacón, Thiago C. Silva, Diego R. Amancio
The impact factor has been extensively used in the last years to assess journals visibility and prestige. While the impact factor is useful to compare journals, the specificities o…
The cyclicality of loan loss provisions under three different accounting models: the United Kingdom, Spain, and Brazil
A. M. B. Araujo, P. R. B. Lustosa
A controversy involving loan loss provisions in banks concerns their relationship with the business cycle. While international accounting standards for recognizing provisions (incu…
Non-polyhedral extensions of the Frank-and-Wolfe theorem
J. E. Martinez-Legaz, D. Noll, W. Sosa
In 1956 Marguerite Frank and Paul Wolfe proved that a quadratic function which is bounded below on a polyhedron attains its infimum on . In this work we search for larger cl…
A Polytropic Approach to Semi-relativistic Isothermal Gas Spheres at Arbitrary Temperature
Claudio M. G. de Sousa, Evandro A. de Araujo
We use standard polynomial expansion technique to show the existence of a relation between polytropic model and the description of gas spheres at finite temperature. A numerical an…
The role of optimization in the human dynamics of tasks execution
Daniel O. Cajueiro, Wilfredo L. Maldonado
In order to explain the empirical evidence that the dynamics of human activity may not be well modeled by Poisson processes, a model based on queuing processes were built in the li…
Dynamics of wave packets in two-dimensional crystals under external magnetic and electric fields: Vortices formation
H. N. Nazareno, P. E. de Brito, E. S. Rodrigues
In the present work we deal with the dynamics of wave packets in a two-dimensional crystal under the action of magnetic and electric fields. The magnetic field is perpendicular to…