For visual grading experiments, which are an easy and increasingly popular way of studying image quality, hitherto used data analysis methods are often inadequate. Visual grading analysis makes assumptions that are not statistically appropriate for ordinal data, and visual grading characteristic curves are difficult to apply in more complex experimental designs. The approach proposed in this pa...

This well-designed site has links that cover multiple aspects of testing and grading from a basic introduction to testing and measurement to such specific issues as improving multiple choice tests and advice on writing and grading essay questions. Assessment Terminology: A Glossary of Useful Terms (New Horizons for Learning). This site contains clear definitions of assessment terms from account...

Computer grading of hardwood lumber promises to avoid regrading of the same lumber because of disagreements between the buyer and the seller. However, the first generation of computer programs for hardwood lumber grading simplify the process by modeling defects on the board as rectangles. This speeds up the grading process but can inadvertently put a board into a lower grade because rectangular...

AIMS To assess the cost-effectiveness of an improved automated grading algorithm for diabetic retinopathy against a previously described algorithm, and in comparison with manual grading. METHODS Efficacy of the alternative algorithms was assessed using a reference graded set of images from three screening centres in Scotland (1253 cases with observable/referable retinopathy and 6333 individua...

Metal oxide surge arresters (ZNO) are used widely in power system to protect equipments from over voltages. Non uniform potential distribution leads to the depressed service life and low safe reliability, so grading ring is applied on HV surge arrester order to uniform the electric field distribution. One of the problems of arresters is leakage current in power frequency that different paramet...

Purpose: To evaluate the efficacy of computer algorithms in the detection and grading of retinopathy derived from screening of diabetic photographs. Methods: Screening fundus photographs (5 per eye) taken with a mydriatic camera in a general ophthalmology clinic for 52 sequential diabetic patients were graded by a general ophthalmologist and a retina specialist and compared with computer gradin...

OBJECTIVES/HYPOTHESIS The importance of reporting and grading surgical complications is central to quality improvement in head and neck surgery. The purpose of this study is to assess the interobserver reliability, content validity, and construct validity of the Clavien-Dindo classification system for use in grading complications related to head and neck surgery. STUDY DESIGN 1 and 2. METHO...