Ricerc@Sapienza

In recent years, the evolution of artificial intelligence techniques has widely grown such that it gives new ways to improve human life, not only at work but also living. Nowadays, to the human being, physical human-robot interactions (PHRIs) have been presented very important and present itself as a major challenge for the current engineering. Therefore, this work designs and analyses a two-degree-of-freedom robotic arm with flexible joints driven by a DC motor.

Bidirectional relations among adolescents' positivity, perceived positive school climate, and prosocial behavior were examined in Colombian youth. Also, the role of a positive school climate in mediating the relation of positivity to prosocial behaviors was tested. Adolescents (N=151; M-age of child in Wave 1=12.68, SD=1.06; 58.9% male) and their parents (N=127) provided data in two waves (9months apart). A model of bidirectional relations between positivity and perceived positive school climate emerged.

We have explored by means of ab initio molecular dynamics two Ionic Liquids based on the combination of the choline cation with deprotonated cysteine and aspartic acid anions. While the combination of the strong base choline with various other amino-acids leads to the formation of a highly ionized medium where proton transfer is negligible, the presence of additional protic functions on the SH and the COOH groups leads to an unexpected and interesting behavior and to a sizable migration of their acidic protons onto the NH2 basic terminals.