In 1992 neurophysiologists [20] found a new type of cells in areas V1 and V2 of the monkey primary visual cortex, which they called grating cells. These cells respond vigorously to a grating pattern of appropriate orientation and periodicity. Three years later a computational model inspired by these findings was published [9]. The study of this paper is to create a grating cell operator that ha...

Received: March 18, 2015; Accepted: March 20, 2015; Published: March 22, 2015 If you read these pages, you certainly know the seminal book by Benoit B. Mandelbrot, The Fractal Geometry of Nature (1982). In his Masterpiece, Benoit provides both a mathematical model and a description for many of the seemingly complex forms and patterns in nature, showing that fractal patterns are extremely famili...

BACKGROUND Management pain in hospitalized children is challenging for the health-care professionals. Nurses have the most interactions with children who need to assess and manage for their pain. Therefore, the aim was to describe nurses' experiences from pain management among hospitalized children from Iranian culture in this study. METHODS A phenomenological study was conducted in which 23 ...

This paper is the third and final one in a sequence of three. All three papers emphasize that a proposition can be justified by an infinite regress, on condition that epistemic justification is interpreted probabilistically. The first two papers showed this for one-dimensional chains and for one-dimensional loops of propositions, each proposition being justified probabilistically by its precurs...