Error di usion ordered dither and patterning are well known digital halftoning tech niques each with its advantages and disadvantages Error di usion is known for correlated artifacts looking like zebra stripes Images produced by ordered dither and patterning su er from arti cial contours in slowly varying regions of pictures Use of ordered matrices by both ordered dither and patterning results ...

In recent years strains previously grouped within Cryptococcus neoformans have been divided into two species C. neoformans and C. gattii, with Cryptococcus neoformans comprising serotypes A, D, and AD and C. gattii comprising serotypes B and C. Cryptococcus neoformans have also been subdivided into two varieties C. neoformans var. grubii, serotype A, and C. neoformans var. neoformans, serotype ...

There have been many published accounts of idiopathic leucine-sensitive hypoglycaemia of infancy since its description by Cochrane, Payne, Simpkiss, and Woolf in 1956, and raised plasmainsulin levels after the administration of L-leucine have been found in children with this condition (DiGeorge, Auerbach, and Mabry, 1960; Grumbach and Kaplan, 1960; Harmer and Sinclair, 1964). Similar changes in...

We propose an algorithm for the All-Pairs-Shortest-Paths (APSP) problem suitable for implementation in Spark, and analyze its performance. We begin by considering distributed Floyd-Warshall, as proposed by Kumar and Singh (1991). Distributed Floyd-Warshall has asymptotically optimal scaling and can be implemented in Spark by using BlockMatrix to represent the APSP distance matrix. However, we o...

A 65-year old, farm worker female with a six weeks right eye (RE) discomfort, tearing and progressive eyelid swelling was referred to our clinic. Past ophthalmic and systemic history was uneventful. She presented painless, considerable RE superior eyelid edema, bilateral best-corrected visual acuity of 0.9, normal ocular movement and pupil reflex. Slit lamp examination revealed conjunctival hyp...

" In 2009 we are predicting the Darwin effect will encourage more visitors to Ecuador and could see the Galapagos islands join Macchu Picchu at the top of the continent's 'must-visit' list, " says tour operator The Adventure Company. The company reflects the views of many in the tourist industry that believes the Galapagos Islands are likely to attract increased numbers of visitors this year, w...

Eccrine poroma can mimic benign and malignant melanocytic and non-melanocytic lesions. To date, little is known about the dermoscopic features of this condition. Seven histopathologically proven cases of eccrine poroma were examined using dermoscopy by three independent dermatologists. Both glomerular and hairpin vessels were observed in 71% of cases, whereas linear irregular vessels were obser...