FrontPanel: Tangible User Interface for Touch-Screens Dedicated to Elderly

In this paper, we describe FrontPanel, a tangible user interface that enhances accessibility features in an iPad. More specifically, FrontPanel was designed for the senior population who has difficulty interacting with touch-screen tablets because of the lack of tangibility. FrontPanel is a result of one year help sessions with elderly who wished to replace their desktop/laptop computer with a touch-screen tablet that has the advantage of being light and mobile

Monte Carlo simulation for calculating the exchange couplings in Ca2CrNO6 (N = Mo, Re) double perovskites

In the last few years there has been a growing interest in mixed magnetic oxides containing the transition-metal Cr, as they show interesting physical properties and a great ability to use in spintronic, photovoltaic and magnetocaloric applications. Therefore, several publications have appeared documenting Cr-based double perovskites, but very few have explored the promising compounds Ca2CrNO6 (N = Mo, Re). Exchange couplings in Ca2CrNO6 (N = Mo, Re) Double perovskites (DPs) have been fitted by Monte Carlo Simulation (MCS) calculations in the framework of Ising model by using a method based on a relation between internal energy per site and magnetization per site. The exchange couplings JCr−Mo=−1.977meV, JCr−Cr=4.614meV and JMo−Mo=1.481meV have been obtained for Ca2CrMoO6, while JCr−Re=−12.221meV, J'Cr−Cr=11.244meV and JRe-Re=11.492meV have been obtained for Ca2CrReO6. The role of exchange couplings strengths in the magnetism of this class of materials has been discussed. Internal energy per site has been calculated

Ab initio study on the electronic, optical and electrical properties of Ti-, Sn- and Zr-doped ZnO

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