3 The Rotating Calipers Algorithm 3 3.1 Computing the Initial Rectangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Updating the Rectangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2.1 Distinct Supporting Vertices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2.2 Duplicate Supporting Vertices . . . . . ....

Entheseal changes (ECs) have been widely recorded using visual methods, but size and shape affect stress distribution which cannot be quantified visually. The aim of this paper is to present a simple method for quantifying size and shape by applying parameters to quantify shape and to highlight preliminary results indicating that this method provides useful data. Hypotheses tested were: common ...

Objective To assess the reliability and variability of digital calipers, 3D photography, high-frequency ultrasound (HFUS) for measurement cutaneous neurofibromas (cNF) in patients with neurofibromatosis type 1 (NF1). Background cNF affect virtually all NF1 are a major source morbidity. Reliable techniques measuring needed to develop therapies these tumors. Methods Adults were recruited. For eac...

The skinfold caliper is a non-invasive anthropometric technique regularly used to assess the nutritional status of clinical and non-clinical individual samples for evaluation of body composition percentage. A skinfold caliper allows obtaining important anthropometrical data using a simple and portable tool, with a non-invasive and cost-effective procedure. Using regression equations, the skinfo...

Shamos [1] recently showed that the diameter of a convex n-sided polygon could be computed in O(n) time using a very elegant and simple procedure which resembles rotating a set of calipers around the polygon once. In this paper we show that this simple idea can be generalized in two ways: several sets of calipers can be used simultaneously on one convex polygon, or one set of calipers can be us...

Propensity-score matching is increasingly being used to reduce the impact of treatment-selection bias when estimating causal treatment effects using observational data. Several propensity-score matching methods are currently employed in the medical literature: matching on the logit of the propensity score using calipers of width either 0.2 or 0.6 of the standard deviation of the logit of the pr...

A measurement of the thickness of subcutaneous skinfolds has been widely used as an index of body fat. Edwards et al. (1955) investigated the design and accuracy of skinfold calipers and made a number of recommendations for their construction which were incorporated in the Harpenden skinfold calipers. They found that the precision of the Harpenden skinfold calipers was adequate and that the dif...

The diagnosis and treatment of bone disorders in patients with chronic kidney disease (CKD) represent a clinical challenge. CKD leads to mineral and bone complications starting early in the course of renal failure. Recently, we have observed the positive relationship between intensified central kynurenine turnover and bone strength in rats with subtotal 5/6 nephrectomy (5/6 Nx)-induced CKD. The...