Teresa Abreu

Polytechnic Institute of Cavado and Ave | IPCA · Ciencias

Aim Information on health risks conveyed in pamphlets, websites, and even medical journals often deceive health professionals and patients, either as a result of lack of understanding or as a result of the intention to manipulate opinions and decisions. This problem is even more meaningful when presenting the benefits using relative risk reduction...

Background: The misunderstanding of numbers and probabilities is a problem that runs across practically the entire population. This problem concerns both physicians, nurses, and patients, affecting medical decisions and informed consent. Notably, this problem hurts the proper interpretation of a positive mammogram, which covers the computation of t...

The behavior of an iterative method applied to nonlinear equations may be considerably sensitive to the starting points. Comparisons between iterative methods are supported by the study of the basins of attraction in the complex plane . However, usually, nothing is said about the rate of convergence. In this paper, by making recourse to several exa...

In this paper first we present elements of a theory of integration of a quasi-uniform conoid valued functions with respect to a positive measure following the doctoral thesis of the first author "Integration on Uniform Type Conoids". Then we show that it is possible to apply this theory for integration of functions with values in the hyperspace of...

If (X, Q) is a quasi-uniform space, then in the hyperspace P 0 (X) of all non-empty subsets of X we investigate the several quasi-uniformities related with the Bourbaki–Hausdorff quasi-uniformity ([5], [10], [11], [12]). We show that if (X, Q) is a quasi-uniform monoid (conoid), then P 0 (X) with respect to the corresponding algebraic operations an...

In a non-empty set a filter on consisting of reflexive relations, which satisfies: ∀ χ ε Χ ∀ Q, ∃ P ε Q such that P ° P [χ] ⊂ Q [χ] is called local quasi-uniformity. If we require the symmetry condition then we obtain a local uniformity. These concepts were introduced by Fletcher-Lindegren(1974) and Williams(1972) respectively. We will discuss the...