Number 1

Electronic Medical Equipment
Electronic Systems in Measurement and Control
Embedded Systems
Quantum and Nuclear Electronics

Number 2

Circuits and Systems
Education in Electronics
Micro- and nanoelectronics
Power Electronics
Quality and Reliability in Electronics
Technologies in Electronics

 

Number 1- Electronic Medical Equipment, Electronic Systems in Measurement and Control, Embedded Systems, Quantum and Nuclear Electronics

 

Popov A., Dynamic Approaches to Mixed Signal Design

3

Electronic Medical Equipment

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Mihov G., I. Dotsinsky, Ch. Levkov, R. Ivanov, Generalised Subtraction Procedure for Removing Power-Line Interference from ECG: Case of Powerline Frequency Deviation

15

Levkov Ch., Sl. Mihov, G. Mihov, Algorithm for Optimal Linear Transformation of 12 Standard Leads for Emphasizing Difference between Typical and Atypical QRS Complexes

20

Jekova I., V. Krasteva, T. Dobreva, N. Mudrov, Zh. Kostov, J. Didon, Cardio Compression Control Device

24

Iliev I., S. Tabakov, E. Dimitrov, Portable Telemedicine System for High-risk Patients

28

Manoeva M., S. Tabakov, I. Iliev, PatRis Software Tool Applicable in Monitoring Systems for Patients at Risk

31

Shopov M., N. Kakanakov, G. Spasov, Distributed System for Monitoring of Physiological Parameters in Web-based Personal Health Systems

35

Shopov M., N. Kakanakov, G. Petrova, Profile-based Protocol for Data Interactions in Body Sensor Networks

39

Chakarov V., V. Krasteva, Automatic Analysis of Event-related Potential Components

43

Dobrev D., T. Neycheva, N. Mudrov, High-Q Comb Filter for Mains Interference Suppression

47

Dobrev D., T. Neycheva, N. Mudrov, Simple High-Q Comb Filter for Mains Interference and Baseline Drift Suppression

50

Nenova B., I. Iliev, Online Digital Filters Applicable to Fast Pulse Wave Detection

53

Nenova B., I. Iliev, Non-Invasive Methods of Peripheral Pulse Detection: Advantages and Disadvantages

57

Puri G., S. Tabakov, Adaptive Procedure for ECG Baseline Wandering Suppression

61

Embedded Systems

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Mladenov T., S. Nooshabadi, K. Kim, Hardware Accelerator for Raptor Decoder

64

Machan L., P. Steffan, The Modern System for Analyzing and Detecting Lead in Solders

68

Dyankov I.,Principles of Indoor Localization and Method for RSSI Measurement

71

Dilov K., E. Dimitrov, Study of OSEK OS Possibilities for Usage in Railway Electronic Diagnostic Systems

75

Dilov K., E. Dimitrov, Implementation of OSEK/VDX Based OS for Usage in Railway Diagnostic System

79

Pashev A., P. Yakimov, Design and Investigation of a WEB Based Temperature Sensor

83

Lubomirov Sl., Digital Relay Protection with LPC 2124 General Purpose I/O Controller for External Communication

87

Quantum and Nuclear Electronics

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Wallerand J., Th. Bhadr, M. Himbert, M. Nenchev, Two-wavelength Laser Interferometry with a Single Two-wavelength Lasers

91

Melikyan V., A. Hovsepyan, K. Vardanyan, Design Automation Method for Total Ionization Dose Tolerant Integrated Circuits

95

Mitev G., M. Mitev, L. Tsankov, An Advanced Method and Circuit for RLC Shaping of NaI (Tl) Scintillation Detector Signals

97

Mitev G., Specifics of Using Current Mirrors for High-side Current Measurements in Detector Power Supplies

101

Electronic Systems in Measurement and Control

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Ye J., G.C. M. Meijer, Dynamic Offset Canceling Technique Applied in the Universal Transducer Interface

105

Guo X., St. Nihtianov, A Charge-transfer Method and SC Circuit for Measuring Capacitors with One Floating Electrode

109

Schieveen J., R. Yang, St. Nihtianov, J. Spronck, Control System for High-Precision Thermal Actuation

113

Xia Sh., J. Schieveen, St. Nihtianov, J. Spronck, High-Resolution Low-Latency Capacitive Displacement Sensor

117

Xia Sh., St. Nihtianov, A New Approach to High-Speed High-Resolution Capacitive Ratio Measurement

121

Ivanov R. V., T. Djamiykov, P. Yakimov, Possibilities for Electric Energy Consumption Distant Reading System Organization

125

Ribov B., St. Dimitrov, I. Petrushev, T. Atanasova, Electronic Energy Meter Suitable for Energy Efficiency Analysis

129

Vesely A., J. Vanek, J. Dolensky, M. Kafka, Transillumination Photoluminescence

132

Yaryshev S., I. Konyakhin, Al. Timofeev, T. Djamiykov, Universal Opto-electronic Measuring Modules in Distributed Measuring Systems

135

Mardirossian G., Z. Zhekov, Noise Measurement in Electronic-optic Transformers

138

Koleva E., Development of Optocouplers with Bolometer Photodetectors

140

Koleva E., I. Kolev, Development of Optocouplers with Pyroelement Photodetector

144

Nikolov G., St. Vutev, B. Nikolova, Magnetic Fields Measurement with AMR Sensors

148

Logofetova-Trifonova P., M. Marinov, G. Nikolov, Methodology for Static Parameters Testing of Magnetic Field Sensors

152

Zhelyazkov G., M. Mitev, Monitoring Earth's Magnetic Field Using Magnetoresistive Sensor ZMY20M

156

Djamiykov T., M. Marinov, M. Milushev, G. Nikolov, Sensors Characterization System for Educational Laboratories

160

Marinov M., G. Nikolov, P. Logofetova-Trifonova, Intelligent Sensor System for Air Quality Monitoring

164

Sapundjiev P., Air Humidity Measurement Using The Psychrometric Method

168

Molnar K., M. Vlcek, Evaluation of Bandwidth Constraint Models for MPLS Networks

172

Molnar K., M. Vlcek, Evaluation of Bandwidth Constraint Models for MPLS Networks

176

Shoshkov T., St. Jilov, G. Mihov, V. Gunev, Intelligent Sensor for Weight Measuring, Qualifying and Inspecting

180

Nikolov G., P. Yakimov, Virtual Three Phase Power Transducer

184

Nikolova B., G. Nikolov, M. Todorov, Curve Fitting of Sensors Characteristics

188

Vladimirov Kr., D. Todorov, Automate the Processing and Analysis of Results of Parametric Measurements

192

Milushev M., T. Djamiykov, Design of the Modular Control Architecture for a Walking Robot

195

Nikovski Pl., I. Maslinkov, Analysis of an Equivalent CCPE Connection Diagram of the One-port Circuit by Square-wave Voltage

197

Stoyanov P., S. Ivanova, V. Markov, N. Tchilyanski, The Tends in Taking Remote Earth Observation from Space

200

Radoyska P., A Deterministic Approach for Diagnosis Test Generation

204

Radoyska P., A Deterministic Approach for Diagnosis Test Generation - Further Optimizations

208

Mashkov P., T.Pencheva, B. Gyoch, Electronic Control of Emitters Operation for Infrared Welding of Plastic Details

212

 

 

Number 2-Circuits and Systems, Education in Electronics, Micro- and nanoelectronics, Power Electronics, Quality and Reliability in Electronics, Technologies in Electronics

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Education in Electronics

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Shoikova E., Modelling Specifications for Competence

3

Shoikova E., M. Krumova, Review of Competence Based Education Practices

8

Shoikova E., M. Krumova, Researching Competency Models

14

Prasek J., Z. Pytlicek, J. Hubalek, Student Workplace for Gas Sensing Demonstration

19

Adamek M., J. Prasek, J. Cieslar, The Sensor Technic Workplace for Internet Learning

22

Adamek M., J. Prasek, M. Nicak, New Trends of BGA Soldering in Education

26

Vasileva T., V. Tchoumatchenko, Knowledge Practices Environment and Tools for Collaborative Knowledge Creation

29

Tchoumatchenko V., T. Vasileva, Ontology Design for Visual Modeling Languages

33

Videkov V., R. Radonov, Improved Data Visualisation in the e-Management System

37

Lyubenova T., D. Lyubenov, J. Dimitrov, Client Server System for Control of Virtual Instruments as Web Based Teaching Tools

40

Iovev A., Yakimov P., Tuliev N., S. Ovcharov, E. Balkanska, Student Workplace for PLC Programming Training

44

Hadzhidimov I., V. Pavlov, Education on Solar Potential Estimation at EUC Energy-Nature-Balkan, TU-Varna

48

Stoyanova L., Database Structure of the Information System for Graduation Works Allocation in the Technology School Electronic Systems

52

Kostadinov A., Using HDL Translators in VLSI Design Laboratory Exercises

56

Circuits and Systems

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Sztojanov I., V. Voinea, D. Crisan, C. Popescu-Mina, Fractal Technology Based Image Processing in Botany and Biology

60

Alaverdyan R., Minimum Cut Algorithm for Hypergraph

64

Mihov Sl., R. Ivanov, A. Popov, Denoising Speech Signals by Wavelet Transform

69

Prokop R., Vl. Musil, Current Conveyor CCII as the Most Versatile Analog Circuit Building Block

73

Vrba A., R. Prokop, Fully Integrated OTA-C Filter Tunable by Controlled Transconductance Parameter

77

Gadjeva E., N. Gadzhev, Yield Enhancement Approach Using Monte Carlo Simulation in SPICE

80

Gadjeva E., E. Dimitrova, D. Shikalanov, A Model-Based Approach to Automated Diagnosis of Multiple Parametric Faults

84

Durev Vl., E. Gadjeva, Implementation of Geometry Dependent Planar Inductor and Transformer Models in Cadence PSpice

88

Pandiev I., T. Todorov, P. Yakimov, D. Doychev, A Practical Approach to Design and Analysis Sinusoidal Oscillators

92

Pandiev I., T. Todorov, P. Yakimov, D. Doychev, Current Conveyor Based Sinusoidal Oscillators Employing Quartz Crystal Resonators Behaving as Inductors

96

Asparuhova K., T. Djamijkov, Investigation of Optoelectronic Circuits

100

Petrova I., B. Mihaylov, S. Mihov, Development of Evaluation Kit Extension Modules for Analog-to-Digital and Digital-to-Analog Conversion

103

Minev P., V. Kukenska, The Virtex-5 Routing and Logic Architecture

107

Stefanova St., Application of Elman Recurrent Neural Network for Modeling of IIR Digital Filter

111

Power Electronics

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Spirov D., Comparison of PWM Strategies for Inverter-fed Induction Motor

115

Kunov G., G. Gigov, M. Metodiev, PSpice Investigation of Bridge Transistor CFI Supplied from Hysteresis Current Controlled BUCK DC-DC Regulator

119

Popov E., L.Pindeva, S. Hristov, Three Dimensional Generalized Characteristics of Autonomous Voltage Fed R L C Inverters

123

Veselinov Vl., D. Grigorov, Methods for Determining the Available Working Resources of Power Electronic Devices

127

Bankov N., Al. Vuchev, G. Terziyski, Operating Modes of a Series-Parallel Resonant DC/DC converter

129

Nikolov G., Comparative Study of Welding Transformers Based on Nanocrystalline and Ferrite Cores

133

Valchev V., Pl. Yankov, A. Marinov, PMSM/BLDC as Generators in Renewable Energy Conversion Systems

137

Micro- and nanoelectronics

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Priem Fr., J. Calu, R. Craemer, Towards the Integration of Course Modules of Different European Institutions of Higher Education into a Multimedia Learning Platform

141

Vitanov St., V.Palankovski, Influence of the Gate Recess on the Performance of Enhancement-Mode AlGaN/GaN HEMTs

144

Verslype S., E. Blomme, T. Cool, R. Craemer, Fr.Loret,J.Peuteman, J. Vandenbussche, Cross-correlation Based Ultrasonic Multi Channel Quality Control Using a Virtex 5 SX50T Board

148

Rusev R., G. Angelov, B. Atanasov, T. Takov, M. Hristov, Comparison of Branching Hydrogen Bonding Networks with Microelectronic Devices

152

Rusev R., G. Angelov, T. Takov, M. Hristov, Biocircuit for Signal Modulation Based on Hydrogen Bonding Network

155

Petkov I., G. Angelov, I. Panayotov, M. Hristov, Tuning Verilog-A PSP Model to a Specific Technology

159

Panayotov I., T. Stoiadinova, K. Filipova, V. Mladenov, Th. Ortlepp, Creating VHDL Descriptions of Asynchronous Dual-rail RSFQ Logic

163

Brusev T., M. Hristov, Power Losses in Monolithic Buck DC-DC Converter Designed on CMOS 0.35 m Technology

166

Strijkova V., R. Kazakov, J. Assa, E.Spassova, G. Danev, High Temperature Stable Polymer Layers-Obtaining by Vacuum Deposition Methods

170

Dyuzov B., E. Manolov, Design of Automotive LED Driver Control Circuit

174

Manolov E., F.Koparanov, M. Tzanov, Modeling the Behavior of RLC Circuits Using FPAA

178

Manolov E., M. Tzanov, F.Koparanov, FPAA Implementation and Investigation of Analog Neurons

182

Atanasova I., A. Pangev, A 0.35m CMOS Linear Voltage Regulator with High Voltage Power Supply

186

Todorova R., T. Takov, A. Pangev, Bandgap Voltage Reference Simulations in Cadence and Layout Design

190

Yordanov R., MCM Design Using CADENCE

194

Draganov V., G. Angelov, K. Asparuhova, M. Hristov, Verilog-A Formulation of Godfrey-Lazzaro Model for Simulations in Cadence CAD System

198

Technologies in Electronics

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Dolensky J., J. Vanek, A.Vesely, and Jiri Kazelle, Detection of Microplasma in Solar Cell

202

Prasek J., M. Adamek, M. Cupal, Planar Electrode Topography Optimization for Electrochemical Sensor

205

Drinovsky J., P. Steffan, P. Barath, Measurement of Electromagnetic Shielding Efficiency of Composite Materials with Carbon Fibers

209

Dimov D., I. Jivkov, E. Spassova, J. Assa, P. Dineff , G. Danev, Ion-Assisted Processes a Novel Tool for Accomplishing of Physical Deposition of Organic Layers

212

Aleksandrova M., N. Nikolov, Sv. Andreev, G. Bodurov, Investigation of Spray Coating as a Deposition Technique for Fabrication of Multilayer Organic Structures

215

Ivanova M., M. Nakova, I. Ivanov, K. Denishev, Investigation and Analysis of Angular Gyroscope Microelectromechanical Systems

219

Ivanova M., M. Nakova, I. Ivanov, K. Denishev, Investigation and Analysis of Gyroscope MEMS Design Solutions for Automotive Applications

223

Hristov M., St. Filipov, Kr. Denishev, I. Uzunov, Vl. Grozdanov, D. Gaydazhiev, Design and Simulation of MEMS Vertical Accelerometer

227

Hristov M., St. Ruskov, Kr. Denishev, I. Uzunov, Vl.Grozdanov and D. Gaydazhiev, Design and simulation of Horizontal Accelerometers

230

Vulcheva E., I. Ivanov, M. Hristov, Vl. Grozdanov, D. Gaydazhiev, Kr. Denishev, Methods for Real Time Measurement of Y-Displacement of the MEMS Horizontal Thermal Actuator

234

Hristov M., Vl. Grozdanov, I. Ivanov, D. Gaydazhiev, Kr. Denishev, Design and Analysis of MEMS Variable Capacitor Driven by Vertical Electro-thermal Actuators

237

Denishev Kr., St. Cvetkov, Design and Investigation of RF MEMS Switch

240

Rahnev P., D. Parashkevov, Manufacturing of Nichrome Thin Film Potentiometer

244

Parashkevov D., Some Consideration to Uncertainties by Defining the Resistance Value of a Thin Film Resistor

246

Dobrikov G. M., G. H. Dobrikov, St.Boyadzhiev, Y. Kotani, Y. Matsumura, R. Yordanov, Investigation of the Fluorescent Quantum Efficiency of New Low-Molecular Weight Compounds

249

Zhivkov I., V., Siderov, D. Dimov, R. Kazacov, G. H. Dobrikov, S. Dimova, Ch. Jossifov, Electrophoretic Deposition of Thin Poly [2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] Thin Films

253

Kolev D., V. Todorova, Limitations of One Dimension Modeling for the Resonance Piezoelectric Array Sensors

257

Quality and Reliability in Electronics

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Vanek J., M. Lunak, Z. Chobola, J. Dolensky, A. Vesely, Evaluating of the Quality of New Solar Cells Designed for Concentrator Systems Application by Noise Spectroscopy

261

Dimitrov K., D. Nurkov, Diagnostic Reasoning and Reliability Analysis in Sensor Button Electronic System via Petri Nets

264

Andonova A., R. Yordanov, Reliability Prediction of HIC and MCM

268