volume 50

20150910-02
Analysis of transient plane wave coupling to horizontal conductor in homogeneous lossy soil
Vesna Arnautovski-Toševa, Leonid Grčev, Marija Kacarska

Cite as:

Modeling of transient behavior of wire conductors in presence of lossy soil has been a subject of great amount of research. This problem has been dealt with in different ways, from application of rigorous full-wave approaches ...  read more

20150910-01
Wireless solution for traffic monitoring
Elena Chervakova, Marco Goetze, Tino Hutschenreuther, Hannes Toepfer, Bojana Nikolić, Bojan Dimitrijević

Cite as:

This work describes research aspects of the development of a sensor system to register traffic-related data, such as the number, type, and speed of vehicles on a “tactile road”. This system aims to provide a costeffective ...  read more

20151112-08
Study of power fluctuations and their compensation in a hybrid system with renewable energy sources
Hristiyan Kanchev, Bruno François, Zahari Zarkov, Ludmil Stoyanov, Vladimir Lazarov

Cite as:

This paper deals with the combined influence of photovoltaic and different wind energy potentials and respectively the produced energy on the operation of an autonomous hybrid system. The studied system comprises a PV generator, ...  read more

20151112-07
Analysis of the torque ripple of permanent magnet synchronous motors with inset and embedded magnets
George Todorov

Cite as:

This paper analyzes with magnetic field distribution and torque ripple of Permanent Magnet Synchronous Motors (PMSM) with inset and embedded magnets. An analytical model of the motor has been developed. The model uses iterative ...  read more

20151112-06
Single server queueing model with state dependent arrival and departure rates
Seferin T. Mirtchev

Cite as:

In this article, a single server delay system with a state dependent arrival and departure processes is investigated. The generalized arrival and service flow with nonlinear state dependence intensities is used. The idea is ...  read more

20151112-05
Globalization and digital privacy
Radi P. Romansky, Irina St. Noninska

Cite as:

Contemporary Information Society proposes variety of opportunities for communication between users (social networks & social media), different activities and services (cloud computing and mobile cloud computing), sharing ...  read more

20151112-04
Transcranial direct current stimulation: complex protocol and device for neurophysiological investigations
Tatyana Neycheva, Roumen Kirov, Juliana Yordanova, Tsvetan Mudrov, Ivan Dotsinsky

Cite as:

Transcranial direct current stimulation (tDCS) is an emerging technique for noninvasive brain stimulation, which induces plasticity in the brain via application of relatively weak currents through the scalp in humans. In the ...  read more

20151112-03
Computer modeling, simulation and model parameter extraction of submicron integrated circuits using SPICE
Marin H. Hristov, Elissaveta D. Gadjeva

Cite as:

With the fast development of submicron technologies, the need of accurate modeling, simulation and parameter extraction of RF microelectronic devices increases. The accuracy of the developed models and parameter extraction ...  read more

20151112-02
Comparison between circuits for charging and voltage balancing over series connected elements for energy storage
Dimitar D. Arnaudov, Nikolay L. Hinov, Ivan I. Nedyalkov

Cite as:

In the following article two circuits for simultaneously charging and voltage balancing are studied and compared. Simulation and experimental studies have been made. They show the changes, which occur during the operating ...  read more

20151112-01
Nanotechnology – the moving force of nowadays electronics, information technologies and telecommunications
Georgi M. Mladenov

Cite as:

Modern electronics devices and systems, computers and telecommunications are developing due to the achievements in nanotechnologies – a new scientific and applied field that uses the application of methods and techniques ...  read more