IMPORTANCE Diagnostic errors are an understudied aspect of ambulatory patient safety. OBJECTIVES To determine the types of diseases missed and the diagnostic processes involved in cases of confirmed diagnostic errors in primary care settings and to determine whether record reviews could shed light on potential contributory factors to inform future interventions. DESIGN We reviewed medical r...

background : retakes of intra oral radiographs happen frequently in dental practice although radiographic courses train dental students in consecutive semesters. to reduce the patient exposure as much as possible it is mandatory to reduce the number of retakes both in radiology clinics and educational centers. materials and methods : 3188 periapical radiographs taken by bisect-angle technique w...

We exhibit a class of nonlinear operators with the property that their iterates converge to their unique fixed points even when computational errors are present. We also show that most (in the sense of the Baire category) elements in an appropriate complete metric space of operators do, in fact, possess this property.

Binocular stereo is an ill-posed problem that has to be regularised with respect to partial occlusions and homogeneous textures for obtaining a unique solution. We analyse typical errors of the dynamic programming stereo based on a probabilistic regularisation of partial occlusions. Experiments show that the reconstruction is accurate until occlusions do not prevail over the binocularly visible...

Application of calorimetry to cold fusion or LENR presents unique problems that have not been previously summarized. This paper discusses various calorimetric methods that have been applied to the subject and evaluates each in light of what has been discovered about their limitations and errors based on experimental studies. Such information is essential to a study of the effect and to evaluate...

Group psychotherapy provides unique opportunities for clinical errors in the selection of patients and composition of therapy groups. This article introduces some of the difficulties and complexities that can be associated with group composition and patient selection errors. Clinical vignettes from psychodynamic/interpersonal psychotherapy groups are used to illustrate three variations of group...

Refinancing a mortgage is often one of the biggest and most important financial decisions that people make. Borrowers need to choose the interest rate differential at which to refinance and, when that differential is reached, they need to take the steps to refinance before rates change again. The optimal differential is where the interest saved by refinancing equals the sum of refinancing costs...