Issue 9-10, 2016
ELECTROTECHNICA & ELECTRONICA E+E
Vol. 51. No 9-10/2016
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA
C O N T E N T S
TELECOMMUNICATIONS SCIENCE
Zlatan K. Ganev
Outdoor propagation of signals between wireless sensor nodes 1
Zdravko Mihaylov, Valentin Tzenov
Payment of pensions by the ”Bulgarian posts” PLC-monopoly or obligation? 6
Mircho J. Mirchev
Beyond algebraic connectivity of graphs – evaluation of topology, based on spectral clustering 11
Diyana D. Kyuchukova, Georgi V. Hristov
Conducting experiments using a platform for evaluation and assessment of SDN performance 17
ELECTRICAL ENGINEERING
Emil I. Panov, Miroslava Gr. Doneva
Exploration of the possibilities of the variational approach for analysis of transient processes in electric circuits 23
Emil Y. Marinov, Tsvetomir T. Todorov, Zhivko St. Zhekov, Nikolay V. Petkov
Adaptive vector control of permanent magnet synchronous motor 32
APPLICATION IN PRACTICE
Ivanka D. Tsvetkova, Plamen Z. Zahariev
A study on 3D printing technologies and their applications 38
