An interactive Augmented Reality system for Engineering education

This paper presents an innovative approach to enhance students’ learning and understanding of digital design using complex commercial design flows. The architecture of our experimental system is based on new technologies such as Augmented Reality (AR), XML metadata, and an XML integrated database system. The database provides the content for multimedia presentation in a virtual environment, visualised through AR, which enables students to engage effectively in the process of learning. These include textual descriptions, animated videos, auditory information, images and 3D computer generated objects of related diagrams and designs. An XML interface will allow the teacher to input multimedia information into the database remotely in a simple way. Using an AR interface the content of the database will be visualized in real time using state-of-the-art virtual reality technologies, i.e. head mounted displays, tracking devices, etc. Through this interface, users will be able to interact collaboratively. Using collaborative AR the students will also develop team skills that play a significant role in the learning process. Finally, we provide an illustrative description of how our experimental system will operate, and we present some initial results

Image potential state Influence on Charge Exchange in Li+ - Metal Surface Collisions

The energy dependence of the neutral fraction of ions scattered by metal surfaces is observed to be affected by the presence of energy gaps and surface states in their surface band structure. The effect is more dramatic when the ion energy level remains close to the surface Fermi level of the surface, as it occurs in the scattering of Li positive ions by Cu and noble metal surfaces. We have incorporated the interaction of the ion state with the bulk- and surface-like states within an extended Anderson model and by using an ab initio calculation of the Hamiltonian terms. In this form we found that the increase of the neutral fraction at low projectile energies is explained solely by the presence of energy gaps in the case of Cu(111), while the bonding interaction with the first image potential state is also important in the Cu(100), Ag(100), and Ag(111) surfaces.Fil: Bonetto, Fernando Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Física del Litoral; Argentina. Universidad Nacional del Litoral. Facultad de Ingenieria Quimica. Departamento de Materiales; ArgentinaFil: Garcia, Evelina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Física del Litoral; ArgentinaFil: González, César. Universidad de Oviedo. Departamento de Física; EspañaFil: Goldberg, Edith Catalina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Santa Fe. Instituto de Física del Litoral; Argentina. Universidad Nacional del Litoral. Facultad de Ingenieria Quimica. Departamento de Materiales; Argentin