Most people use four different approaches when making ethical decisions. Some people use one approach predominantly; others vary their approaches according to circumstances. In either case, the approaches are usually chosen unconsciously. The main source of conflict in decision making is the fact that two parties have chosen different approaches. The four approaches are: The principle approach,...

background  & aim: case-crossover  studies are the case-control  version of crossover studies. in these studies, cases and controls are the same subjects. the term crossover is applied for designs that all subjects pass through both treatment (exposure) and placebo (non-exposure) phases. in fact they are  crossover  of  subjects  between  periods  of  exposure  and  non-exposure.  this  design ...

Cardiovascular disease is the main cause of death among hemodialysis patients. Although uremia by itself may be considered to be a cardiovascular risk factor, a significant proportion of dialysis patients die because of cardiovascular disease not directly attributable to uremia. Indeed, many of the cardiovascular diseases and cardiovascular risk factors in these patients are common to those occ...

In this paper, we address practical methods for calculating camera lens distortion for real-time applications. Although the lens distortion problem can be easily ignored for constant-parameter lenses, it becomes important in the "eld of real-time camera calibrations, particularly for zoom lenses. Tsai's camera calibration method, which is adopted in this paper for real-time application, consist...