Ivan Gabrijel

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In this paper finite automata are treated as general discrete dynamical systems from the viewpoint of systems theory. The unconditional on-line identification of an unknown finite automaton is the problem considered. A generalized architecture of recurrent neural networks with a corresponding on-line learning scheme is proposed as a solution to the problem.(More)
The mechanism of compressive failure is still in progress to be clarified; this has been tried with acquisition and analysis of acoustic emission parameters. The processing of the AE data is often not trivial and because of that, simple tests on the concrete samples were made. This paper deals with the relations between load and acoustic emission activities(More)
Concrete setting and hardening processes are the most critical phases during construction works, influencing properties of a concrete structure. The transformation from liquid to solid state is characterised with two points in hydration time: initial and final setting. The initial set is important because it provides an estimate when concrete has reached(More)
Preliminary notes This paper addresses fresh and hardening properties of self compacting concretes (SCC) made with dolomite filler and pozzolanic materials, fly ash and matekaolin as cement replacement in different amounts. For this study, seven mixtures were prepared with a constant water-to-powder ratio and powder content. Fresh SCC properties were(More)
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