Exploring Online Learning Data Using Fractal Dimensions

Online-learning: exploring practices among Foundation doctors

Introduction: Postgraduate medical education involves the use ofonline-learning tools. However, there is a paucity of data on theuse of online-learning among doctors who are in their 1st and 2ndyears of professional work after graduating from medical school(also known as Foundation doctors). Our aim was to explore theuse of online-learning among Foundation doctors.Methods: A cross-sectional stu...

FONT DISCRIMINATIO USING FRACTAL DIMENSIONS

One of the related problems of OCR systems is discrimination of fonts in machine printed document images. This task improves performance of general OCR systems. Proposed methods in this paper are based on various fractal dimensions for font discrimination. First, some predefined fractal dimensions were combined with directional methods to enhance font differentiation. Then, a novel fractal dime...

Exploring Collaborative Online Learning

An investigation was carried out to determine the extent to which evidence of collaborative learning could be identified in students’ textual interactions in an online learning environment. The literature on collaborative learning has identified a range of behaviors that characterize successful collaborative learning in face-to-face situations. Evidence of these behaviors was sought in the mess...

Fractal dimensions

Measuring Watermarking Robustness Using Fractal Dimensions

The authors present a new approach for measuring watermarking robustness in the case of color attacks of rgb-color watermarked images. This approach is applied to evaluate the robustness of our algorithm to watermark an rgb-color image by modifying pixels colors. It is based on Kolmogorov-Smirnov test and it uses fractal dimensions to quantify modified color pixels. The authors test smooth and ...