We propose and analyze a model for optimizing the prefetching of documents, in situation where connection between documents is discovered progressively. A random surfer moves along edges tree representing possible sequences which known to controller only up depth d. quantity k can be prefetched two movements. The question determine nodes should so as minimize probability moving node not prefetc...

The paper reviews methods and trends of numerical modelling geomechanical processes around underground mine excavations. most rational method determining the additional stresses caused by excavations is chosen. Mathematical was performed for various cross sections different strength rocks. dimensions inelastic deformation zone have been identified. area total fracture excavation, as well roof a...

To cite: Campbell TG. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2014203896 DESCRIPTION In the world of surfing, a pterygium—a band of fibrous tissue that extends from the conjunctival surface on to the cornea—is common enough have acquired the moniker ‘surfer’s eye’. Pterygia can encroach on the visual axis or cause a foreign body sensation in the eye, at wh...

Machines and equipment or work processes that make noise. Evaluation of noise intensity is carried out by making a map describes the distribution pattern from 278 measurement points then processed with surfer software, which becomes basic information to protect workers risk hearing loss. After measuring analyzing data, level ranged lowest 41.0 dBA, highest 101.9 dBA. From map, it can be seen ma...