Issue 5-6, 2015

ELECTROTECHNICA & ELECTRONICA E+E

Vol. 50. No 5-6/2015
Monthly scientific and technical journal
Published by:
The Union of Electronics, Electrical Engineering and Telecommunications /CEEC/, BULGARIA

20150506-full

C O N T E N T S

ELECTRICAL ENGINEERING

Ilonka T. Lilyanova
Analytical approach for calculation of the electric field induced by an axisymmetric current exciter 2

Mihail Digalovski, Goran Rafajlovski, Krste Najdenkoski
Optimally designed energy efficient transformer using global iterative algorithms 8

Valentin Kolev, Anka Zeglova, Ivailo Lazarov
Derivation and analysis of ceramic materials based on BaTiO₃ by using standard ceramic technology 12

Rosen Vasilev, Vladimir Chikov, Valentin Gyurov, Ivaylo Nedelchev, Stoyan Tashev, Asen Krastilev, Tzvetan Alistarov, Natalia Nikolova
System for intelligent measuring, registering and control in electrical substation 18

Denitsa Darzhanova, Marina Manilova, Kostadin Milanov
Experimental study of the contact resistance of crossed cylindrical reinforcing steel bars 24

Takeshi Tanaka, Koji Mukai, Masayuki Yamauchi, Masao Kochi, Atsushi Ikeda, Hideo Kuzuhara, Koichi Matsushita, Go Hironobu
A study on glare in a sports lighting environment using LED lighting and diffusion plates 30

TELECOMMUNICATIONS SCIENCE

Emil E. Vladkov
Implementing DSP-based algorithms in digital modulation tasks 36

PRACTICAL APPLICATIONS

Whitepaper: Employment, training and qualification needs of the European industry – a perspective from the joining sector 44