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Vrnjačka Banja, Serbia

Zoller C.,University of Petrosani | Dasic P.,SaTCIP Ltd. | Dobra R.,University of Petrosani | Pantovic R.,University of Belgrade | Damnjanovic Z.,University of Belgrade
Technics Technologies Education Management

Between the absorbed power and the ore fill of the gridding aggregates there is an extremal connection. Using just some information as absorbed active power, filling degree and recycled flow, can control by discrete steps the feed flow rate in order to obtain maximum processing capacity. In consequence, a sequential algorithm for processing information was developed for gridding aggregates. That was modeled on PC by using graphical software from HP-VEE for simulation the optimum command of the ore gridding aggregates. A fuzzy control was analyzed and proposed also in the paper also. Source

Lekic M.,University of Prishtina | Cvejic S.,University of Prishtina | Dasic P.,SaTCIP Ltd.
Technics Technologies Education Management

Classic Sturm's theorems are qualitative theorems, which refer to oscillating movements, locations of zero oscillations (knots), periods and frequencies, phases and amplitudes of oscillations, i.e. to all terms which are basics in electrical engineering. These theorems provide laws on interlacing of zeros of two fundamental oscillating solutions, as well as on interlacing of abscissas of extreme and zero solutions. However, they do not determine the exact number of zeros, but only tell us about the possible minimum number of zeros without determination of more precise location of zero solutions. In this work we shall improve Sturm's theorems which have been almost two hundred years old. Namely, we are going to determine the locations of zero oscillations of the oscillation equation y″ + a(x) {dot operator} y = 0, a(x)>0. We shall also locate the abscissas of extremes which is a rather significant step. This will be considerable mathematical improvement, without any grand mathematical formalism and rather convenient for engineering practice. We can claim that, in some way, we have demystified this issue and showed that neither theory of groups nor some other numerics are necessary for oscillations of the second order. Source

Serifi V.,SaTCIP Ltd. | Dasic P.,SaTCIP Ltd. | Curcic S.,University of Kragujevac | Stojkovic Z.,Megatrend University
Technics Technologies Education Management

Contemporary design is characterized by the investment process approach with the previous definition of process structure. Modern manufacturing investment to be productive, rational and economical. Decisions about the choice of investors transfer of construction and selection of the best performers should be the aim of modern project management, just in time, with minimal construction costs and no lack of quality. This paper presents an algorithmic approach to the construction investment project with an analysis of optimal choice of assignment construction. Source

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