arXiv subjects

Joao E. Steiner

Publications and source records attributed to Joao E. Steiner.

2 recordsLinked to original sources

arXiv2006

World University Rankings - A Principal Component Analysis

In order to establish which parameters and corresponding weights are more appropriate for the assessment of academic excellence in the context of university rankings, I have made a multivariate data analysis on a set of 13 parameters for 178 institutions. I found that the three more relevant components are academic excellence (48%), internationalism (14%) and faculty/student ratio (8%). It is shown that these components are not correlated.

physics.data-an↗

arXiv2004

Circular polarimetry of magnetic cataclysmic variables

Magnetic cataclysmic variables are complex accreting binary systems with short orbital periods. Here we present circular polarimetry of five magnetic cataclysmic variable candidates. 1RXS J161008.0+035222, V1432 Aql, and 1RXS J231603.9-052713 have cyclotron emission, which confirms them as AM Her systems. Our data are consistent with zero values for the circular polarization of 1RXS J042555.8-194534 and FIRST J102347.6+003841 imposing some constraints to the polar classification of these objects.

astro-ph↗