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In this paper, we argue for the design of off-task interaction in technology enchanced learning. This implies a rethinking of pedagogy which can substantially contribute to achieving specific learning goals. We describe a work-in-progress and provide concrete examples of how we deal with relevant issues raised by allowing for off-task interactions in an educational math game as an integrated learn
This work presents a technique to reduce the phase errors of quadrature signals. The proposed concept is demonstrated on a 2.4-GHz single-sideband up-converter in a 0.35-/spl mu/m BiCMOS process. The quadrature LO signals are obtained on-chip by means of two coupled oscillators, achieving a figure-of-merit of 186 dB. The image-rejection ratio improves by 7 to 11dB across the 28% LO tuning range wi
The aim of this study is to systematically compare parametric and non-parametric techniques for analyzing trends in annual NDVI derived from NOAA AVHRR sensor in order to examine how trend type and departure from normality assumptions affect the accuracy of detecting long-term change. To generate annual data, the mean NDVI of a four-month long ‘green’ season was computed for fifteen sites (located
An adaptive predictor for discrete time stochastic processes with constant but unknown parameters is described. The predictor which in real time tunes its parameters using the method of least squares is called a self-tuning predictor. The predictor has attractive asymptotic properties. If the parameter estimation converges and if the predictor contains parameters enough, then it will converge to t
From a historical view point, one of the most striking features in the Caucasian languages is the preservation of archaic linguistic structures, often represented by the active alignment. These languages might have had contact with non-Caucasian languages but the contact-induced changes may not be as obvious as those in other languages in Europe. In this paper, it is argued that the preservation o
A study of the use of color - hue, value and intensity - in grave goods from LBA Asine, Greek mainland, to see choices in an attempt to learn more about the abstract values and philosophies of the Bronze Age people in Asine
