Adaptive Intelligent Tutoring Systems (ITS) aim at helping students going through the resolution of a given problem in a principled way according to the desired outcomes, the intrinsic capabilities of the student, and the particular context in which the exercise takes place. These systems should be capable of acting according to mistakes, boredness, distractions, etc. Several works propose diff...

We present a new approach to digital forensic evidence acquisition and disk imaging called sifting collectors that images only those regions of a disk with expected forensic value. Sifting collectors produce a sector-by-sector, bit-identical AFF v3 image of selected disk regions that can be mounted and is fully compatible with existing forensic tools and methods. In our test cases, they have ac...

Distance-balanced graphs are introduced as graphs in which every edge uv has the following property: the number of vertices closer to u than to v is equal to the number of vertices closer to v than to u. Basic properties of these graphs are obtained. In this paper, we study the conditions under which some graph operations produce a distance-balanced graph.