volume 54

20190102-04
Some features for calibration of analyzers of electric power by power factor
Plamen Tzvetkov, Krasimir Galabov, Ivan Kodjabashev

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In relation to the calibration of analyzers of electric power, the mathematical model of the power factor is represented by its dependence on the phase angle of voltage and current of the first harmonic as well as on the general ...  read more

20190102-03
Algorithm for software realization of video observation system by means of remote control
Lilijana Docheva, Ivo Dochev, Maria Pavlova

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The aim in the article is to present a software realization of video observation system by means of remote control. The system consists of two main components. One of them is a quad-copter and the other is the development ...  read more

20190102-02
On the spectra of scale-free and small-world networks
Mircho Mirchev

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This paper reviews the most commonly used models of complex systems and networks -Erdos -Renyi, Watts-Strogatz and Barabasi-Albert models. These models address different sets of properties and phenomena of real-life networks. ...  read more

20190102-01
Definitions for disruptive innovation in telecommunication technologies
Tsvetoslava Kyoseva

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Every industry at a given moment reaches its end of development, a tipping point where the saturation of the market by products, services and technologies is inevitable. This article analyzes the term innovation and its specific ...  read more