The idea that item response theory (IRT) models yield invariant parameter estimates is widely accepted among scholars interested in achieving truly scientific measurements in social and behavioral sciences. Starting from ...

In this work a new set of principal axis invariants is proposed in order to study the problem of considering large magneto-elastic deformations, for bodies that are isotropic in the un-deformed configuration when no external ...

In this thesis our main interest is focused specically on the dynamics of cellular automata. Dynamics will be addressed by the invariance of the automaton, and in some cases invariance will be addressed by its reversibility. ...

This paper extends the roommate problem to include externalities, allowing preferences for a partner to depend on the situation of others. Stability concepts for matchings and partitions of the set of agents are proposed ...

Open systems acquire time-dependent coupling constants through interaction with an external field or environment. We generalize the Lewis–Riesenfeld invariant theorem to open system of quantum fields after second quantization. ...

Este trabajo tuvo como objetivo obtener evidencias de validez del LSB-50 (de Rivera & Abuín, 2012), un instrumento psicométrico de screening (despistaje) para medir psicopatología, en una muestra de adolescentes argentinos. ...

Polarization propagators can be identified with linear responses of a system to external/internal perturbing fields, being that responses experimentally measurable. Then, approximated and reliable calculations with propagators ...