Radiocommunications and Videotechnologies Department

Proceedings of Papers of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies 2009 - ICEST 2009

2009, June 25-27, Veliko Tarnovo, Bulgaria

2009, ISBN: 978-954-438-795-2 (Vol. 1) / ISBN: 978-954-438-796-9 (Vol. 2) / Official web-site

Editor: Rumen Arnaudov

Published by: Faculty of Telecommunications, Technical University of Sofia, Sofia, Bulgaria

Printed by: Publishing House of Technical University of Sofia, Sofia, Bulgaria

PROCEEDINGS OF PAPERS - VOLUME 1 - FULL BOOK

Front cover - volume 1

Back cover - volume 1

PROCEEDINGS OF PAPERS - VOLUME 2 - FULL BOOK

Front cover - volume 2

Back cover - volume 2

CONTENTS OF VOLUME 1

Session MICROWAVE TECHNIQUE

• Mancic, Z. J., V. V. Petrovic, Accurate Algorithm for Calculating Characteristic Impedance of a Square Coaxial Line, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 3-6, ISBN 978-954-438-795-2.
• Marinković, Z., V. Marković, Training Data Pre-Processing for Bias-Dependent Neural Models of Microwave Transistor Scattering Parameters, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 7-10, ISBN 978-954-438-795-2.
• Nedelchev, M. V., I. G. Iliev, Synthesis and Analysis of Equal Power Division Reduced-Size Branch-line Hybrids, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 11-14, ISBN 978-954-438-795-2.
• Nedelchev, M. V., I. G. Iliev, Design of Hexagonal Open Loop Filters on FR-4 Substrate, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 15-18, ISBN 978-954-438-795-2.
• Shtarkova, R. I., N. T. Dishovsky, Microwave Absorbing Materials for Protection from Electromagnetic Radiation, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 19-22, ISBN 978-954-438-795-2.
• Stošić, B. P., M. V. Gmitrović, Block-based Analysis of Microstrip Structures with Stubs by use of 1D Wave Digital Approach, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 23-26, ISBN 978-954-438-795-2.

Session ANTENNAS AND PROPAGATION

• Apostolov, P., Theory Approach and Method for Linear Antenna Array Design with Improved Selectivity, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 29-32, ISBN 978-954-438-795-2.
• Bonev, B., K. Angelov, Investigation on Millimeter Waves Usage in Hybrid FSO/RF Communication Systems, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 33-36, ISBN 978-954-438-795-2.
• Milovanović, B., M. Milijić, Z. Stanković, Neural Network Approach in Modeling Microwave Slotted Patch Antennas, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 37-40, ISBN 978-954-438-795-2.
• Mitsev, Т., K. Dimitrov, N. Kolev, Reliability Testing of Free Space Optical Systems in Laboratory Conditions, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 41-44, ISBN 978-954-438-795-2.
• Nešić, A., I. Radnović, M. Šunjevarić, 60 GHz Range High Gain Millimeter Wave Antenna Array with Cylindrical-Parabolic Reflector, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 45-48, ISBN 978-954-438-795-2.
• Savov, S., V. Vasileva, M. Doneva, Smart Antenna Configurations – Analysis based on ESPRIT Methods, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 49-52, ISBN 978-954-438-795-2.
• Sirkova, I., Path Loss Calculation for a Surface Duct Statistics, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 53-56, ISBN 978-954-438-795-2.
• Stoyanov, N. M., T. P. Levtchev, G. K. Georgiev, Suppression Mutual Coupling between the Resonators in Microstrip Antennas by using PBG Substrates, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 57-60, ISBN 978-954-438-795-2.

Session RADIO COMMUNICATION SYSTEMS – 1

• Cvetkovic, A. M., J. A. Anastasov, G. T. Đorđević, M. Č. Stefanović, Statistics of the SSC Output SIR in the Presence of Correlated Weibull Fading and Interference, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 63-65, ISBN 978-954-438-795-2.
• Iliev, I. G., M. Nedelchev, Antenna Diversity Multi User Detection Algorithm for Synchronous CDMA System, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 67-70, ISBN 978-954-438-795-2.
• Kountchev, R., D. Bojchev, D. Dobrev, An Analysis of the Possibilities for Using Lattices for the Interpolation of the Exact Signal Vector Position of QAM Constellations, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 71-74, ISBN 978-954-438-795-2.
• Krstic, D. S., S. R. Panic, J. A. Anastasov, G. L. Stamenovic, D. M. Stefanovic, The Second-Order Statistical Measures of SC Macrodiversity System over Independent Weibull Fading Channels, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 75-78, ISBN 978-954-438-795-2.
• Panajotović, A., M. Stefanović, Dragan Drača, D. Milović, N. Sekulović, D. Stefanović, Influence of Cochannel Interference on SC Diversity System over Rician Fading, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 79-81, ISBN 978-954-438-795-2.
• Sekulović, N., D. Drača, A. Panajotović, Z. Nikolić, Č. Stefanović, Channel Capacity of a System in Shadowed Fading Channels with Micro- and Macrodiversity Reception, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 82-84, ISBN 978-954-438-795-2.
• Stefanović,M. Č., P. Nikolić, D. S. Krstić, G. L. Stamenović, S. Milosavljević, The Performances of Generalized Selection Combiner in the Presence of Generalized-K Fading Channels, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 85-88, ISBN 978-954-438-795-2.

Session RADIO COMMUNICATION SYSTEMS – 2

• Mitrović, N., D. Obradović, M. Perić, Central Control Unit for the Outdoor Unit of IMTEL Digital Radio Relay Systems Series B, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 91-94, ISBN 978-954-438-795-2.
• de Carvalho, J. A. R. P., H. Veiga, P. A. J. Gomes, A. D. Reis, C. F. F. P. R. Pacheco, Applications of 2.4 GHz Microwaves to WLAN Development at the University of Beira Interior Campus, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 95-98, ISBN 978-954-438-795-2.
• de Carvalho, J. A. R. P., P. A. J. Gomes, H. Veiga, C. F. F. P. R. Pacheco, N. Marques, A. D. Reis, Performance Measurements of IEEE 802.11 a, g Laboratory Point-to-Point Links, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 99-102, ISBN 978-954-438-795-2.
• Dragana, P., P. Miroslav, Š. Milan, Application of above 1Gbit/s Millimeter Wave Radio Links for Realization of IP Networks in Urban Areas, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 103-106, ISBN 978-954-438-795-2.
• Miroslav, P., P. Dragana, O. Dragan, O. Vladimir, Concept of Signal Processing in Ultra-High Capacity (1Gbit/s) Millimeter Wave IP Digital Radio, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 107-110, ISBN 978-954-438-795-2.

Session RADIO COMMUNICATION SYSTEMS – 3

• Angelov, K., K. Koitchev, N. Varbanova, Estimating Losses from Transient and Intersymbol Distortions in Hybrid Fiber-Coaxial Television Network, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 113-116, ISBN 978-954-438-795-2.
• Jordanova, L., V. Topchiev, EDFA Application in WDM CATV Systems, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 117-120, ISBN 978-954-438-795-2.
• Jordanova, L. T., D. M. Dobrev, Software Receiver for Return Path Signals in Cable Television Networks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 121-124, ISBN 978-954-438-795-2.
• Mandić-Lukić, J., B. Milinković, N. Simić, N. Hadžiefendić, Presentation of the Results of Measuring Characteristics of Power Line Installations in the Signals Transmission, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 125-128, ISBN 978-954-438-795-2.
• Sadinov, S., K. Angelov, K. Koitchev, I. Balabanova, Investigation of the Impact of CSO/CTB/CNR Parameters in Designing and Operating CATV Networks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 129-132, ISBN 978-954-438-795-2.

Session TELECOMMUNICATION NETWORKS

• Georgiev, T., A. Tsenov, Modeling Service Level Monitoring Processes for QoS Guarantee of Managed Services, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 135-138, ISBN 978-954-438-795-2.
• Pencheva, E., I. Atanasov, D. Marinska, Policy Models for Resource Management, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 139-142, ISBN 978-954-438-795-2.
• Pencheva, E., I. Atanasov, Study on Open Access to Connectivity Management, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 143-146, ISBN 978-954-438-795-2.
• Petrov, N., V. Poulkov, G. Iliev, On Cross-layer Design of Wireless Mesh Networks using Network Coding, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 147-150, ISBN 978-954-438-795-2.
• Radonjić, V., V. A. Raspopović, Competitive Pricing using Game Theory in the Next Generation Networks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 151-154, ISBN 978-954-438-795-2.

Session TELETRAFFIC ENGINEERING

• Gospodinova, E., N. Sinyagina, R. Ilarionov, Evaluation of Traffic Self-Similarity Influence on QoS in Local Ethernet Network, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 157-160, ISBN 978-954-438-795-2.
• Janevski, T., D. Mladenovski, Novel Adaptive Scheduling Scheme for Multimedia Networks with Differentiated Services, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 161-164, ISBN 978-954-438-795-2.
• Janevski, T., I. Petrov, Performance of Internet Transport Protocols in 802.11g Wireless Environment, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 165-168, ISBN 978-954-438-795-2.
• Kassev, K., B. Tsankov, Analysis of Voice Traffic Performance over OFDM Wireless Access Systems with AMC, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 169-172, ISBN 978-954-438-795-2.
• Mirtchev, S. T., R. Goleva, А Discrete Time Queueing Model with a Constant Packet Size, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 173-176, ISBN 978-954-438-795-2.
• Radev, D., D. Stankovski, S. Radeva, Simulation Modeling of Self-Similar Teletraffic, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 177-180, ISBN 978-954-438-795-2.

Session SIGNAL PROCESSING – 1

• Kountchev, R., M. Milanova, V. Todorov, R. Kountcheva, Inter/Intra-Frame Compression of Video Sequences of Dynamic Signatures with Hierarchical Decomposition, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 183-186, ISBN 978-954-438-795-2.
• Kostov, M., C. Mitrovski, Wavelet Denoising by using Linear-Phase NPR-QMF Banks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 187-190, ISBN 978-954-438-795-2.
• Mironov, R. P., R. K. Kountchev, Architecture of Communication System for Distance Learning of Deaf People, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 191-194, ISBN 978-954-438-795-2.
• Mironov, R. P., R. K. Kountchev, Architecture of Image Processing System for Documents, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 195-198, ISBN 978-954-438-795-2.
• Draganov, I. R., R. K. Kountchev, Document Protection Based on CHT Coefficients’ Phase Modulation, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 199-202, ISBN 978-954-438-795-2.

Session SIGNAL PROCESSING – 2

• Docheva, L., A. Bekiarski, Investigation of Analog Neural Network used for Numbers Recognition in Images, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 205-208, ISBN 978-954-438-795-2.
• Krupev, A. A., A. A. Popova, Fast Anaglyph Retinal Rivalry Reduction Algorithm, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 209-212, ISBN 978-954-438-795-2.
• Brodić, D., Z. Milivojević, Reference Text Line Identification Based on "Water Flow" Algorithm, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 213-216, ISBN 978-954-438-795-2.
• Manolova, A., R. Kountchev, I. Aleksieva, Improved System for Content Based Image Retrieval based on Pyramid Decomposition in the Spectrum Domain, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 217-220, ISBN 978-954-438-795-2.
• Klekovska, M., I. Nedelkovski, V. Stojcevska-Antic, D. Mihajlov, Automatic Letter Style Recognition of Churchslavic Manuscripts, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 221-224, ISBN 978-954-438-795-2.

Session SIGNAL PROCESSING – 3

• Markova, V., J. Yli-Kaakinen, T. Saramäki, A Genetic-based Algorithm for the Design of Multiplierless Halfband IIR Filters, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 227-230, ISBN 978-954-438-795-2.
• Nikolova, K., G. Stoyanov, V. Markova, Investigations of Variable Fractional Delay Allpass Digital Filters, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 231-234, ISBN 978-954-438-795-2.
• Sirakov, E. S., Band-Pass Loudspeaker Systems with Single Vent, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 235-238, ISBN 978-954-438-795-2.
• Damyanov, D., Z. Nikolova, Using the Support Vector Algorithm to Detect Voiced Segments and Eliminate Unvoiced Frames, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 239-242, ISBN 978-954-438-795-2.
• Damyanov, D., S. Pleshkova, Deriving Measures for the Goodness of 1-D Spline Interpolator Filters, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 243-246, ISBN 978-954-438-795-2.
• Gerazov, B., Z. Ivanovski, Diphone Analysis of the Macedonian Language for the Purpose of Text-to-Speech Synthesis, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 247-251, ISBN 978-954-438-795-2.

Session COMPUTER SYSTEMS AND INTERNET TECHNOLOGIES – 1

• Aleksić, D. S., D. S. Janković, The Realization of the OO Database in the Specific CAD/CAM Applications, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 255-258, ISBN 978-954-438-795-2.
• Daleksić, D. S., D. S. Janković, The Use of Scripts in a CAD/CAM Database, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 259-262, ISBN 978-954-438-795-2.
• Marković, N., L. Stoimenov, Sensor Web Architecture for Crisis Management, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 263-266, ISBN 978-954-438-795-2.
• Mihajlović, V., B. Predić, D. Rančić, S. Djordjević–Kajan, I. Antolović, Z. Babić, Architectural Enhancement of HASIS 3D Hail Suppression Information System, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 267-270, ISBN 978-954-438-795-2.
• Nedelkovski, I. I., S. P. Vrskova, Image based Virtual Tour through Bitola, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 271-274, ISBN 978-954-438-795-2.
• Savković, P., B. Atlagić, N. Vranić, V. Marinković, A Software Solution for Making Digital Systems for Data Sorting, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 275-278, ISBN 978-954-438-795-2.

Session COMPUTER SYSTEMS AND INTERNET TECHNOLOGIES – 2

• Bogdanović, M., A. Stanimirović, S. Tošić, L. Stoimenov, Specialized Geo-Information System for Calculation of Distribution Network Losses, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 281-284, ISBN 978-954-438-795-2.
• Kovačević, M., A. Milosavljević, D. Rančić, Implementing Complex Polylines for use in GIS, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 285-288, ISBN 978-954-438-795-2.
• Ranđić, S., U. Pešović, Ž. Jovanović, V. Maksimović, WEB Model for Remote Data Acquisition Based on Google Maps GIS, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 289-292, ISBN 978-954-438-795-2.
• Nikolić, T. R., M. K. Stojčev, CDMA versus TDMA Transfer over Shared Bus, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 293-296, ISBN 978-954-438-795-2.
• Ristevski, B., S. Loskovska, Visualization and Structure Learning of Gene Regulatory Networks using Bayesian Networks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 297-300, ISBN 978-954-438-795-2.
• Stojanovic, D., B. Predic, S. Djordjevic-Kajan, A Service Platform for Context-Aware Mobile Transport-Related Information Services, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 301-304, ISBN 978-954-438-795-2.
• Zaharieva-Stoyanova, E., Computer Aided Design of Knitting Pattern Structures, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 1, pp. 305-308, ISBN 978-954-438-795-2.

CONTENTS OF VOLUME 2

Session ENERGY SYSTEMS AND EFFICIENCY – 1

• Acevski, N., R. Ackovski, K. Micalevski, Practical Analytical Procedure for Grounding Grids Design for HV/MV TS, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 311-314, ISBN 978-954-438-796-9.
• Antchev, М., M. Petkova, A. Krusteva, D. Geibel, H. Antchev, Application of Active Power Filters in Distributed Energy Systems, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 315-318, ISBN 978-954-438-796-9.
• Blagoev, К., G. Todorov, Algorithm for Identification the Transformer Working Condition, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 319-322, ISBN 978-954-438-796-9.
• Korunovic, L., D. Stojanovic,S. Jovanovic, The Research of Harmonics in Low Voltage Distribution Network of Nis, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 323-326, ISBN 978-954-438-796-9.
• Korunovic, L., D. Stojanovic, A. Jovic, Measurement and Analysis of the Neutral Conductor Current in Low Voltage Distribution Network of Nis, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 327-330, ISBN 978-954-438-796-9.
• Krusteva, A., T. Degner, J. Mutale, E. Kolentini, I. Wasiak, Network of Excellence DERlab Activities for Transition towards More Decentralised Energy Systems, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 331-334, ISBN 978-954-438-796-9.
• Vasileva, M., M. Yordanova, Atmospheric Overvoltages in Low Voltage Networks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 335-337, ISBN 978-954-438-796-9.

Session ENERGY SYSTEMS AND EFFICIENCY – 2

• Yordanova, M., M. Vasileva, M. Mehmed- Hamza, Model Research on the Operation of Residual Current Devices in Electrical Networks Low Voltage, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 341-342, ISBN 978-954-438-796-9.
• Rogleva, N. K., V. Fustic, Hydrogenerator Reliability Assessment, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 343-346, ISBN 978-954-438-796-9.
• Marinov, A., V. Valchev, Overview and Comparison of Renewable Microgeneration with Combined Heat Power Systems, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 347-350, ISBN 978-954-438-796-9.
• Nikolova, S., A. Iliev, Short Term Prediction of Wind Farm Power Production, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 351-354, ISBN 978-954-438-796-9.
• Petrinska, I., A. Pachamanov, Energy Efficiency Classification of Lighting Systems in Public Buildings, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 355-358, ISBN 978-954-438-796-9.
• Smiljaković, V., Z. Živanović, Hybrid Alternative Power Supply for Communication Equipment Operating in Severe Conditions, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 359-362, ISBN 978-954-438-796-9.

Session MEASUREMENT SCIENCE AND TECHNOLOGY

• Met, A., K. Musiol, T. Skubis, A Synchronized Two-Phase Generator for High-Precision Impedance Bridge, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 365-368, ISBN 978-954-438-796-9.
• Valchev, V., G. Nikolov, Advance Set-Up for High-Frequency Measurements of Magnetic Materials and Components in Electronics, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 369-372, ISBN 978-954-438-796-9.
• Savković, P., B. Atlagić, V. Marinković, N. Vranić, A Proposal for Rapid Prototyping System for Data Acquisition Devices, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 373-376, ISBN 978-954-438-796-9.
• Simić, M. M., B. R. Dimitrijević, Measurement of CMOS Inverter Electrical Parameters in LabVIEW Software Environment, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 377-380, ISBN 978-954-438-796-9.
• Stojković, I. S., G. S. Miljković, D. B. Denić, Improving and Testing the Pseudorandom Position Encoders with LabVIEW, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 381-384, ISBN 978-954-438-796-9.
• Srbinovska, M., C. Gavrovski, V. Dimcev, Optimization Algorithm for Positioning Estimation in Wireless Sensor Networks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 385-388, ISBN 978-954-438-796-9.
• Srbinovska, M., V. Dimcev, Approach to the Design of the Intelligent Wireless Sensors, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 389-392, ISBN 978-954-438-796-9.

Session MEDICAL INFORMATION SYSTEMS

• Kanchev, V., O. Boumbarov, Segmentation of Fat Tissue in MRI Images with Gaussian Models, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 395-398, ISBN 978-954-438-796-9.
• Mihov, S., D. Doychev, R. Ivanov, Practical Investigation of Specific Types of Noise Signals for the Purpose of Suppression in Hearing-Aid Devices, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 399-402, ISBN 978-954-438-796-9.
• Mihov, S., C. Levkov, G. Mihov, Algorithm for Optimal Linear Transformation of 4 Holter Leads for Emphasizing Atypical QRS Complexes, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 403-406, ISBN 978-954-438-796-9.
• Velchev, Y., S. Sokolov, O. Boumbarov, Features Selection for Automatic ECG Personal Identification, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 407-410, ISBN 978-954-438-796-9.

Session ENGINEERING EDUCATION

• Dimitrov, K., T. Mitsev, Research on the Rise Time of a PIN Photodiode during FSO Application, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 413-416, ISBN 978-954-438-796-9.
• Djordjević-Kozarov, J., M. Arsić, Remote Laboratory Development for E-Learning in the Field of Electronic Measurement, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 417-419, ISBN 978-954-438-796-9.
• Vasileva, T., I. Furnadzhiev, V. Tchoumatchenko, M. Lakkala, M. Bauters, Tools for Facilitating Idea Generation in Knowledge Practices Environment, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 421-424, ISBN 978-954-438-796-9.

Poster Session 1 SIGNAL PROCESSING MEDICAL INFORMATION SYSTEMS COMPUTER SYSTEMS ENGINEERING EDUCATION

• Majstorović, D., B. Radin, A Highly Flexible High-Speed Camera System with Realtime Noise Cancellation, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 427-430, ISBN 978-954-438-796-9.
• Petkova, Y., N. Nuri, M. Karova, An Algorithm for Fast and Robust Template Matching using M-estimators, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 431-434, ISBN 978-954-438-796-9.
• Georgieva, V., An Influence of the Structuring Element on Morphological Filtering for Medical Image Enhancement, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 435-438, ISBN 978-954-438-796-9.
• Georgieva, V., V. Kolev, GUI for Medical Images Filtering based on Discrete Wavelet Transformation, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 439-442, ISBN 978-954-438-796-9.
• Georgieva, V., A. Nicolov, One Application of Wavelet Packet Transformations for Medical Image Processing, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 443-446, ISBN 978-954-438-796-9.
• Tabakov, S., Automatic Analysis and Visualization of ECG Recordings, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 447-450, ISBN 978-954-438-796-9.
• Karova, M., B. Razhenkov, J. Petkova, Genetic Algorithm Solution of TSP using PMX Crossover, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 451-454, ISBN 978-954-438-796-9.
• Nakov, O., D. Gotseva, An Approach to Code Analysis in Students’ Diploma Projects, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 455-458, ISBN 978-954-438-796-9.
• Nakov, O., N. Angelova, D. Andreeva, H. Dokomes, Paradigms and Parallel Constructions in Modern Computing, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 459-462, ISBN 978-954-438-796-9.
• Stankovic, V. V., N. Z. Milenkovic, DDR3 SDRAM with a Complete Predictor, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 463-466, ISBN 978-954-438-796-9.
• Toshev, H. I., S. L. Koynov, C. D. Korsemov, Evolutionary Approaches to Cut Wooden Sheets in the Furniture Production, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 467-470, ISBN 978-954-438-796-9.
• Vuckovic, D., D. Jankovic, P. Rajkovic, Usability of Virtual Machines in Laboratory Information Systems, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 471-472, ISBN 978-954-438-796-9.
• Aleksieva, V., Relationship between E-Learning Quality and Feedback about Students’ Satisfaction, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 473-476, ISBN 978-954-438-796-9.
• Lubich, L., A Proposal for a Final Review Session in Radiocommunications Laboratory Practice, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 477-480, ISBN 978-954-438-796-9.
• Mehmed-Hamza, M., M. Vasileva, Using of MATLAB Simulink for Education in High Voltage Technics and Relay Protection, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 481-482, ISBN 978-954-438-796-9.
• Radonow, R., V. Videkov, A Parallel Evaluation of an Educational Subject, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 483-484, ISBN 978-954-438-796-9.

Poster Session 2 ELECTRONIC SYSTEMS

• Arabadzhiev, D., V. Durev, Non-Minimum Phase Filter Synthesis using Genetic Algorithms in MATLAB, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 487-490, ISBN 978-954-438-796-9.
• Durev, V., Application of Genetic Algorithms in MATLAB to Parameter Extraction Errors Minimization of Wide-Band On-Chip Spiral Inductor Model, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 491-494, ISBN 978-954-438-796-9.
• Koleva, E., Electric Optocoupler Filters, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 495-498, ISBN 978-954-438-796-9.
• Koleva, E., I. Kolev, Optocoupler Pulse and Digital Circuits, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 499-502, ISBN 978-954-438-796-9.
• Kunov, G., E. Gadjeva, D. Todorov, Voltage Source Inverter Connected to the Grid with Nonlinear Filter Inductor, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 503-506, ISBN 978-954-438-796-9.
• Nenov, N., Description of Image Processing Algorithms in FPGA for Implementation in Optoelectronic System in Manufacturing, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 507-510, ISBN 978-954-438-796-9.
• Pandiev, I., Analysis and Design of LC Oscillators using Composite Current Conveyors, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 511-514, ISBN 978-954-438-796-9.
• Petrova, P. D., D. P. Petrov, Noise Modeling and Simulation for JFETs at Low Frequencies, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 515-518, ISBN 978-954-438-796-9.
• Stoimenov, E., V. Manoev, Analog Channel of Electronics Remote end Switchers System, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 519-522, ISBN 978-954-438-796-9.
• Todorov, D., E. Gadjeva, G. Kunov, Simplified SPICE Model of TOPSWICH, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 523-526, ISBN 978-954-438-796-9.
• Valtchev, S., R. Miletiev, R. Arnaoudov, S. Valtchev, Control Strategy for Efficient Operation of Super-Resonant SLSR (Contactless) Converters, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 527-530, ISBN 978-954-438-796-9.
• Yordanov, A., G. Mihov, Digital Frequency Sensitive Phase Detector with Controllable Phase-to-Voltage Response, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 531-534, ISBN 978-954-438-796-9.
• Andonova, A., N. Kafadarova, Research the Advantage of IRT Thermal Control in MEMS, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 535-536, ISBN 978-954-438-796-9.
• Videkov, V., A. Andonova, N. Kafadarova, Experimental Assessment of the Angle Emissivity for Materials in Microelectronics, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 537-538, ISBN 978-954-438-796-9.
• Yachovski, A., P. Phillipov, Anodized Aluminum as a Construction Element in Microelectronics, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 539-540, ISBN 978-954-438-796-9.

Poster Session 3 MEASUREMENT AND CONTROL SYSTEMS

• Angelov, P., Automatic System for Measuring the Gain Frequency Response. Prototype Realization, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 543-546, ISBN 978-954-438-796-9.
• Angelov, P., Development of Model for Dynamic Measurement of Gain Frequency Response, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 547-550, ISBN 978-954-438-796-9.
• Balzhiev, P., R. Miletiev, Design of Wireless Measurement Device based on Zigbee Standard, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 551-554, ISBN 978-954-438-796-9.
• Dochev, I., R. Arnaudov, Model Conception and Functional Testing of Internet - ZigBee based System for Measurement and Control, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 555-558, ISBN 978-954-438-796-9.
• Geshev, G., Y. Kolkas, Standardized Smart Acceleration Sensor for Vehicle Tests and Diagnostics, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 559-562, ISBN 978-954-438-796-9.
• Grigorov, I., G. Kolarov, D. Stoyanov, Lidar Remote Monitoring of Aerosol Dust Layers over Sofia, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 563-566, ISBN 978-954-438-796-9.
• Kokolanski, Z., V. Dimcev, System for Verification of Virtual Flickermeters, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 567-570, ISBN 978-954-438-796-9.
• Nikolov, G., B. Nikolova, Using Queued State Machines for Data Acquisition, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 571-574, ISBN 978-954-438-796-9.
• Petrovic, B. D., G. S. Nikolic, Fault-Injection Tool for Distributed Elevator System, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 575-578, ISBN 978-954-438-796-9.
• Rankovska, V., H. Karailiev, Development and Study of One-Channel Programmable Pulse Synthesizer, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 579-582, ISBN 978-954-438-796-9.
• Rankovska, V., H. Karailiev, Development and Study of Two-channel Programmable Pulse Synthesizer, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 583-586, ISBN 978-954-438-796-9.
• Tasić, V., V. Despotović, D. R. Milivojević, M. Pavlov, Monitoring of Technological Process in Electrolytic Refining Plant as a Part of Distributed Control System, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 587-590, ISBN 978-954-438-796-9.
• Gishin, S., V. Gospodinov, K. Boev, Equipment and Method of Investigating and Testing Accumulator Batteries for the Telecommunications, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 591-593, ISBN 978-954-438-796-9.
• Mehmed-Hamza, M., Assessment the Sensitivity of the High Set Instantaneous Overcurrent Relays for Feeder 20 kV, Supplying Distribution Substation, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 595-596, ISBN 978-954-438-796-9.

Poster Session 4 COMMUNICATION SYSTEMS

• Levcheva, V., P. Dankov, I. Arestova, C. Levtchev, Characterization of Microwave Dielectric Materials with the Aid of 3D Electromagnetic Simulators, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 599-602, ISBN 978-954-438-796-9.
• Mihaylova, D. P., G. S. Kirov, Circularly Polarized Aperture Coupled Microstrip Antenna with a Screen and Impedance Transformer: Part 1. Effect of the Antenna Dimensions on the Electrical Characteristics of the Antenna, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 603-606, ISBN 978-954-438-796-9.
• Kirov, G. S., D. P. Mihaylova, Circularly Polarized Aperture Coupled Microstrip Antenna with a Screen and Impedance Transformer: Part 2. Final Results, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 607-610, ISBN 978-954-438-796-9.
• Shaalan, A. A., Design and Simulation of a Single Feed Dual-Band Symmetrical/Asymmetrical U-slot Patch Antenna, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 611-614, ISBN 978-954-438-796-9.
• Stanković, Z., B. Milovanović, N. Dončov, Neural Network-based Software Package for Loaded Microwave Cavity Characterization, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 615-618, ISBN 978-954-438-796-9.
• Cherneva, G. P., A. V. Andonov, Simulation and Examination of a Direct Sequence Spread Spectrum System Using Matlab/Simulink, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 619-622, ISBN 978-954-438-796-9.
• Kolev, G., D. Dobrev, Comparison between DVB-T and DVB-T2, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 623-626, ISBN 978-954-438-796-9.
• Kolev, G., D. Dobrev, Simulation of the new platform DVB-T2, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 627-630, ISBN 978-954-438-796-9.
• Lubich, L., A Proposal for Relaxed Low Pass Filtering in DDS used as a Local Oscillator in Heterodyne Receivers, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 631-634, ISBN 978-954-438-796-9.
• Orlic, V., M. L. Dukic, Properties of an Algorithm for Automatic Modulation Classification based on Sixth-Order Cumulants, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 635-638, ISBN 978-954-438-796-9.
• Dimova, R., Z. Stanchev, Quality of Service Analysis for Voice over IP Applications, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 639-642, ISBN 978-954-438-796-9.
• Milošević, N., Z. Nikolić, P. Petrović, Dynamic Resource Allocation Protocols for 4G Mobile Networks, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 643-646, ISBN 978-954-438-796-9.
• Perić, Z., M. Savić, S. Panić, A. Mosić, Adaptive Semilogarithmic Quantizer for Quantization of Laplacean Source, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 647-650, ISBN 978-954-438-796-9.
• Radojičić, V., G. Marković, An Application of Brand-Level Diffusion Model in the Mobile Communication Market, In Proc. of the 44th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST 2009), Veliko Tarnovo, Bulgaria, June 25-27, 2009, Vol. 2, pp. 651-654, ISBN 978-954-438-796-9.