Abstract The literature has amply shown that primary and secondary school students have difficulties in understanding rational number size. Many of these are explained by the natural bias or use other incorrect reasoning such as gap thinking. However, many studies, types been inferred from comparing students’ accuracies multiple-choice items. Evidence supports ways indeed underlying is scarce. ...

This correspondence first shows that the Cramer-Rao lower bound (CRLB) derivations in the above paper are incorrect. In addition, contrary to the claims in the above paper, the assumptions of perfect timing offset estimation and matched-filtering at the relays affect the generality of the analytical results and cannot be justified assumption.

Several recently published papers in Decision Support Systems discussed issues related to data quality Information research. In this short research note, I build on the work introduced these and document two discovered a large open dataset commonly used Inside Airbnb (IA) collects from places reviews as posted by users of Airbnb.com. Visitors can effortlessly download collected IA for several l...

In [1], several sentences were repeated three times on pages 4062, 4063 and 4065. In addition, many references were incorrect. The errors were introduced by the editorial office during the editing process. We apologize for this mistake and any inconvenience this may have caused to authors and readers. The corrected manuscript is given below.[...].

TheMinkowski sum of two setsA,B ∈ IR, denotedA⊕B, is defined as {a+ b | a ∈ A, b ∈ B}. We describe an efficient and robust implementation for the construction of Minkowski sums of polygons in IR using the convolution of the polygon boundaries. This method allows for faster computation of the sum of non-convex polygons in comparison to the widely-used methods for Minkowski-sum computation that d...