SPIDERS AND ANTICYCLONIC WINDS

Snakes and Spiders

Intensity information is a strong cue for segmentation but on its own cannot be used to distinguish between accidental and non-accidental alignments in a scene, thus resulting in incorrect segmentations. However, motion information can be used to distinguish between accidental and nonaccidental alignments. In this paper an integrated method using both intensity and motion information for the se...

Patients and Spiders

an inexperienced farm worker who had lacerated a leg by the over-zealous use of a scythe; the telephone message stated that the wound was bleeding badly. On arrival at the farm, however, I found no panic and, on inspecting the deep wound, I found very little blood. The laceration had been packed with cobwebs, which had been pulled hastily from corners of the cowshed; the intricate mesh of multi...

Arthropods: Spiders and Peatlands

Tough spiders

Spider graphs are the intersection graphs of subtrees of subdivisions of stars. Thus, spider graphs are chordal graphs that form a common superclass of interval and split graphs. Motivated by previous results on the existence of Hamilton cycles in interval, split and chordal graphs, we show that every 3/2-tough spider graph is hamiltonian. The obtained bound is best possible since there are (3/...

Ageostrophic, anticyclonic instability of a geostrophic, barotropic boundary current

After having previously demonstrated the occurrence of ageostrophic, anticyclonic instability (AAI) for several other steady flows, in this paper we further test the hypothesis that rotating, stably stratified, shear flows are generally subject to AAI at finite Rossby (Ro) and Froude (Fr) numbers by calculating the inviscid, incompressible normal modes of a geostrophic, barotropic boundary curr...