OBJECTIVE The goal of this paper is to describe the characteristics of physicians and their interventions in a large, multicentre randomised trial of acupuncture for tension-type headache known as ART TTH, in order to enable acupuncturists to assess the study interventions. METHODS Participating physicians were recruited whose qualifications met or surpassed those of physicians currently accr...

The graded rough set and multi-granulation rough set are two significant generalized rough set models which be constructed on the indiscernibility relation. They solve the issues that the degree of overlap between the equivalence class and basic set in different view points of quantitative information. The purpose of this study is that research the good points of graded rough set in the multi-g...

We will start with a simple geometric problem, the computation of the convex hull of a finite set of points in the plane. We will formulate a basic algorithm that constructs the planar hull in quadratic time. It accesses the input points through a single predicate, the orientation predicate for three points. We will see how this predicate can be realized by a simple formula in the point coordin...