We discuss new measures in assessing the skill level of students based on their interactions with the Socratic homework tutor, MasteringPhysics. We show that the measurement of the difficulty of problems for a given student as determined by the time to first correct response, the number of incorrect responses without advice, and hints have high reliability (96%). As an immediate application, we...

Goal modeling in general, and i* in particular, are typically taught in specialized courses that are part of postgraduate programs. In this paper, we report on our experience concerning teaching i* and its basic, essential dialect called simple i* to over 130 first-year students of a bachelor degree in information science. We present the intended learning outcomes and activities, we introduce t...

We investigate existing and novel methods to approximate matrix functions using subspace methods. We analyze a two-sided harmonic Ritz approach and apply this to the extraction from a subspace for matrix functions. We derive all methods in various ways and provide a framework to fit in the techniques.