This paper analyses the cognitive difficulty of six courses that may be taken as credit towards an IT degree offered by a regional Australian University. The assessment requirements of these six courses are evaluated using Bloom’s taxonomy and from this a difficulty metric, called here a Bloom Rating, is computed for each course. The analysis reveals that some quite lowly courses in terms of th...

The classical uncertainty principle provides a fundamental tradeoff in the localization of a function in the time and frequency domains. In this paper we extend this classical result to functions defined on graphs. We justify the use of the graph Laplacian’s eigenbasis as a surrogate for the Fourier basis for graphs, and define the notions of “spread” in the graph and spectral domains. We then ...

A 50-year-old man presented with a 6-week history of lumbosacral back pain and altered bowel habit without hematochezia. Abdominopelvic computed tomography (CT) revealed a 5-cm rectal mass with obliteration of the fat plane between the mass and the tip of the coccyx that was interpreted as representing a neoplasm(●" Fig.1a). Followinganormal digital rectal exam, colonoscopy revealed a subtle po...