Recently several authors have stressed and illustrated the importance of including a second kind of negation (explicit negation) in logic programs besides \negation as failure", and its use in deductive databases, knowledge representation, and nonmonotonic reasoning. By introducing explicit negation into logic programs contradiction may appear. In this work we present two approaches for dealing...

In the paper the problem of low-timing-error recovery in the fiber optic (FO) transmission is discussed. The basic sources of timing corruption are presented and especially the amplitude noise to jitter conversion in the receiver is carefully analysed. The special attention is paid to the low-pass filtering of the received signal. The contradiction between low-BER and low-timing-error oriented ...

this article concerns the contradiction between holly religious scripts and the knowledge system of modern world. this contradiction can be studied into two levels: first the contradiction between new scientific theories and the ontological verses in holly scripts; the second one is the contradiction between moral statements based on celestial verses and modern ethical system. this article stud...

The philosophy of dialectic has always been among the most controversial and least well understood aspects of Hegelian and Marxist thought. It is rejected by many writers who are otherwise sympathetic to Marxism. One such is Marquit. In a recent article (Marquit, 1990), he criticizes the dialectical concept of contradiction. Many of his arguments will be familiar to anyone acquainted with the r...

Contradiction is often seen as a defect of intelligent systems and a dangerous limitation on efficiency. In this paper we raise the question of whether, on the contrary, it could be considered a key tool in increasing intelligence in biological structures. A possible way of answering this question in a mathematical context is shown, formulating a proposition that suggests a link between intelli...