We propose a principled approach to video summarization using optimal reconstruction as a metric to guide the creation of the summary output. The spatio-temporal video patches included in the summary are viewed as observations about the local motion of the original input video and are chosen to minimize the reconstruction error of the missing observations under a set of learned predictive model...

The purpose of this study was to examine how four teachers used the seven processes of videotape analysis to develop an analytic approach and reflective thinking towards their teaching. The study was organized within video clubs and was used to describe the interactions among four teachers about their experiences at a language institute. Data were gathered through videotaped recordings of lesso...

Most aeolian sediment transport models and experiments have been conducted on flat horizontal surfaces. Very little numerical or analytical research has been carried out for aeolian sand transport on slopes. The current work presents numerical modelling of saltating sand for a climbing dune which has a slope angle of 20”. The model utilised wind fields predicted from the FAA complex terrain mod...

Flow boiling in a straight\ rectangular channel was investigated to explore the conditions leading to critical heat ~ux "CHF#[ The ~ow channel had a 4[9×1[4 mm cross!section and 090[5 mm heated length^ heat was applied to the shorter dimension along only one wall[ Tests were performed with FC!61 liquid over a velocity range of 9[14 to 09 m s and at outlet subcoolings of 2\ 05 and 18>C[ Video im...

Large scale laboratory experiments concerning breaking wave propagation over a fixed-bed, barred beach were performed. The primary observations of interest were video intensity time series obtained from a set of high-resolution video cameras in order to study the onset of wave breaking in shallow water and wave roller transformation in the surf zone. The approach is new in the sense that the an...