In this paper we present a propositional logic programming language for reasoning under possibilistic uncertainty and represent­ ing vague knowledge. Formulas are repre­ sented by pairs (ip, a), where ip is a many­ valued proposition and a E [0, 1] is a lower bound on the belief on ip in terms of necessity measures. Belief states are modeled by pos­ sibility distributions on the set of all many...

The aim of this paper is twofold. First, it is an attempt to give an answer to the famous essay of Eugene Wigner about the unreasonable effectiveness of mathematics in the natural sciences [25]. We will argue that mathematics are not only reasonably effective, but that they are also objectively effective in a sense that can be given a precise meaning. For that—and this is the second aim of this...

The notion of a fuzzy set, a natural extension of a classical set, was defined in 1965 by L.A. Zadeh; see [16]. Since that time, the fuzzy set theory has been deeply developed and it has influenced many fields of applications and therefore we can find results in branches like: fuzzy time series, fuzzy modeling, fuzzy graph theory and finally, the most often one fuzzy control. In general, the fu...

In the present study, properties of silver nanoparticles (AgNPs) such as average size, size distribution andmorphology were investigated by Tollens, polysaccharide, modified polysaccharide and microbial methods.The synthesized AgNPs were characterized by UV-visible spectroscopy, scanning electron microscopy(SEM), transmission electron microscopy (TEM), dynamics light scatterin...