IEEE Catalog Number: ISBN:

CFP1498P-POD 978-1-4799-6192-4

2014 22nd Telecommunications Forum Telfor (TELFOR 2014)

Belgrade, Serbia 25-27 November 2014

Pages 1-572

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SS1.1. Freudenstein Frederik, Wiedemann Peter, Pejanović-Djurišić Milica, Koprivica Mladen, Nešković Aleksandar Intuitive Exposure and Risk Perception of RF EMF: Case Studies Serbia and Montenegro 1

SS1.2. Lagunov Alexey, Morozova Ludmila, Lagunova Darina, Podorojnyak Nadejda, Kuznetsova Ksenia Some Problems of Safety of Students at Work Wireless IEEE 802.11 Standard 5

SS1.3. Koprivica Mladen, Petrić Majda, Popović Milica, Milinkovic Jelena, Nikšić Stevan, Nešković Aleksandar Long-term variability of electromagnetic field strength for GSM 900MHz downlink band in Belgrade urban area 9

SS1.4. Popović Milica, Koprivica Mladen, Nikšić Stevan, Milinković Jelena, Nešković Aleksandar Methodology for the comparison of cellular technologies and services with respect to EMF exposure 13

SS2.1. Van Daele Peter Internet Research: Join the Playground & Get Involved (Presentation)

SS2.2. Fratu Octavian, Halunga Simona, Crăciunescu Răzvan, Vulpe Alexandru Instrumental IoT - from Environmental Monitoring to Cosmic Ray Detection 17

SS2.3. Mihailovic Andrej, Simeunović Marko, Lekić Nedjeljko, Pejanović-Djurišić Milica A strategy for deploying diverse sensor-based networks as an evolution towards integrated Internet of Things and Future Internet 23

SS2.4. Pokrić Boris Smart cities and IoT-our story (Presentation)

SS2.5. Tomovic Slavica, Yoshigoe Kenji, Maljevic Ivo, Pejanovic-Djurisic Milica, Radusinovic Igor SDN-based concept of QoS aware heterogeneous wireless network operation 27

SS2.6. Zaric Nikola, Radonjić Milutin, Kyriazakos Sofoklis, Pejanović-Djurišić Milica Automated Algorithm for Classification of Water-flow Signals to Support Ambient Assisted Living Applications 31

SS2.7. Vujović Stefan, Bulatović Nikola, Đukanović Slobodan Budi Odgovoran – Tehnologija u Službi Društvene Odgovornosti 35

САДРЖАЈCONTENTS

СПЕЦИЈАЛНА СЕКЦИЈА 1 (СС1)SPECIAL SESSION 1 (SS1)Low EMF Exposure Mobile Networks

СПЕЦИЈАЛНА СЕКЦИЈА 2 (СС2)SPECIAL SESSION 2 (SS2)Fore-Mont: Future Internet Technologies for e-Society

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1.1. Peraković Dragan, Husnjak Siniša, Cvitić Ivan IoT infrastructure as a basis for new information services in the ITS environment 39

1.2. Škrbić Mirko, Huseinović Kemal, Nukić Lamija, Mušović Jasmin, Kasumagić Lamija, Hebibović Alisa Cloud Computing in Bosnia and Herzegovina 43

1.3. Škrbić Mirko, Dervišević Nejra, Mušović Jasmin, Hebibović Alisa, Kasumagić Lamija OTT Services in Bosnia and Herzegovina 47

1.4. Ilišević Dijana, Banović - Ćurguz Nataša Changing face of Mobile Service Providers in B&H 51

1.5. Hadžialić Mesud, Mušović Jasmin, Hamza Mirza, Milišić Mirza, Huseinović Kemal, Dizdarević Jasenka, Dulić Meliha TV White Space: Solution for bridging the gap between user's demand and the network capacities 55

1.6. Lukač Duško Influence of ICT Progress on Energy Transfer and Vehicle-to-Grid (V2G) Solutions 59

1.7. Fatahipour Majid, Ghaseminajm Mahnaz Potentials of telecom for socialising and language learning in Iran N/A

1.8. Pantović Vladan, Aničin Miroslav, Jovanović Miloš, Stefanović Aleksandra, Božić Marija N. Celoživotno učenje, sertifikacija i resertifikacija u oblasti projektnog menadžmenta 67

1.9. Šarboh Snežana, Stojković Slobodan Novootkriveni patenti Mihajla Idvorskog Pupina 71

2.1. Borovina Nihad, Peruničić Branislava Mobile Ad Hoc Networks: Local Distributed Algorithms for Virtual Backbone (Invited paper) 75

2.2. Yadollahi Mehrdad, Tabataba Vakili Vahid, Ghasemi Najm Mahnaz, Jafarian Alireza Reducing Processing Delay and Ping Pong Impact of Multi Attribute Decision Making Handover for Heterogeneous Wireless Networks N/A

2.3. Mirtskhulava Lela, Al-Majeed Salah Reliability Prediction Modelling for Wireless Communication Networks N/A

2.4. Majidzadeh Mohammad, Eslami Mohsen Efficiency, Robustness, and Fairness of a Novel Suboptimal RA Algorithm for MIMO-OFDMA Systems N/A

2.5. Tuba Milan, Bacanin Nebojsa, Alihodzic Adis Firefly algorithm for multi-objective RFID network planning problem 95

2.6. Hadžialić Mesud, Škrbić Mirko, Huseinović Kemal, Kočan Irvin, Mušović Jasmin, Hebibović Alisa, Kasumagić Lamija An Approach to Analyze Security of GSM Network 99

СЕКЦИЈА 2: ТЕЛЕКОМУНИКАЦИОНЕ МРЕЖЕ (ТМ)SECTION 2: TELECOMMUNICATIONS NETWORKS (TN)

СЕКЦИЈА 1: ПОЛИТИКА, РЕГУЛАТИВА И УСЛУГЕ УТЕЛЕКОМУНИКАЦИЈАМА (ПРУ)SECTION 1: POLICY, REGULATORY AND SERVICES INTELECOMMUNICATIONS (PRS)

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2.7. Lagunov Alexey, Fedin Dmitrii, Tyagunin Anatoliy, Podorozhnyak Nadegda, Pozdeev Vitaly, Glavatskih Vitaly, Danilochkin Pavel Study of the Actual Coverage Area of the Satellite Signal Ka-Sat RUSSIA 103

2.8. Sukhov Andrei, Onoprienko Artem Evaluating the Effectiveness of Geographic Routing Based on RIPE Atlas Data 107

2.9. Tomovic Slavica, Prasad Neeli, Radusinovic Igor SDN control framework for QoS provisioning 111

2.10. Hlozak Martin, Frnda Jaroslav, Chmelikova Zdenka, Voznak Miroslav Analysis of Cisco and Huawei Routers Cooperation for MPLS Network Design 115

2.11. Jelinskis Jans, Skrastins Andris Analysis of Effective Fuzzy-CAC Solution for Proactive Traffic Engineering 119

2.12. Sevcik Lukas, Uhrin Dominik, Frnda Jaroslav, Uhrina Miroslav, Chmelikova Zdenka, Voznak Miroslav The Impact of Encryption on Video Transmission in IP Network 123

2.13. Badea Radu, Borcoci Eugen Content Server Saturation Avoidance Algorithm based on Financial Analysis Techniques 127

2.14. Marković Stanislav, Ačanski Milan, Bako Miroslav, Mudri Saša Realizacija programske podrške SAT2IP klijenta zasnovanog na RTSP protokolu 131

2.15. Bukvić Mara, Mišić Jelena Prioritiziranje saobraćaja u 802.15.6 MAC – sličnosti i razlike sa 802.11 i 802.15.4 135

2.16. Stanić Mihailo A Novel Method for Improving Availability in Telephone Network of Electric Power Utility (Invited paper) 139

2.17. Azad Muhammad Ajmal SPIT Detection Using Social Relationship (SPIT-DSR) N/A

2.18. Džajić Miloš, Todorović Branislav, Karanović Miroslav Analiza vremena prenosa poruka tokom prebacivanja SCTP saobraćaja na sekundarni prenosni put 150

2.19. Jeftenić Nikola, Glamočanin Dušanka Prilog sinhronizacije u mobilnim mrežama nove generacije 154

2.20. Omerasevic Damir, Behlilovic Narcis, Mrdović Saša Secure Message Exchange Protocol for Smart Grids 158

2.21. Kemal Mohammed, Olsen Rasmus Analysis Of Timing Requirements For Data Aggregation and Control In Smart Grids 162

2.22. Stojanović Zvezdan Formiranje paketa servisa kao način zadržavanja postojećih korisnika i povećanja ARPU-a na tržištu Bosne i Hercegovine N/A

2.23. Mali Bozidar, Ninkovic Nemanja, Stojanovic Mirjana, Savic Gordana Service class mapping based on integer programming algorithm in the third party agent 170

2.24. Skrastiņš Andris Admission Control Scheme for Effective Revenue Management in NGN Networks 174

2.25. Tsvetanov Filip, Tsvetanov Kamen, Ivanova Elena, Georgieva Ivanka Modelling and Simulation of Communication Efficiency in Low-Speed Networks 178

2.26. Stăncescu Ştefan, Luca Adrian-Alexandru, Caraivan Alexandru TCP-AQM Algorithms which combat the computer networks’ congestion 182

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2.27. Finaskins Dmitrijs, Lauks Gunars Using attractor selection Simulink model for virtual network topology resource management N/A

2.28. Škaljo Namir, Begović Alen A possibility of using wideband noise for qualification and troubleshooting of digital subscriber lines 190

2.29. Aćimović Boris Slučaj opterećenja zaštitnog provodnika u dc električnom razvodu data centra 194

2.30. Pantović Marijana, Dukić Miroslav, Janković Milan Značaj širokopojasnih komunikacija u borbi protiv naglih klimatskih promena 198

2.31. Knežević Dušan, Maruna Tomislav, Ačanski Milan, Šljivić Nenad Realizacija programske biblioteke za generisanje liste kanala na osnovu internet izvora 202

3.1. Tomasevic Nikola, Neskovic Aleksandar, Neskovic Natasa Artificial Neural Network Based Simulation of Short-Term Fading in Mobile Propagation Channel (Invited paper) 206

3.2. Stefanović Hana The analysis of integral characteristics of received signal envelope in wireless mobile communications (Invited paper) 213

3.3. Chaikalis Costas, Liolios Charalampos, Vlachos Vassileios Implementation of an improved reconfigurable SOVA/log-MAP turbo decoder in LTE 218

3.4. Angelova Sanja, Kafedziski Venceslav Comparison of the Secrecy Rates of Two Suboptimal Transmission Methods for the Fading MIMO Wiretap Channel 222

3.5. Erić Miljko, Vujić Dejan, Janjić Miloš, Vučić Desimir Integration of Joint Spatio-Temporal Spectrum Sensing in Mobile Cellular Systems 226

3.6. Hašimbegović Emir, Kočan Enis Experimental results for statistical properties of signal envelope in indoor fading channel at 2,4 GHz 230

3.7. Peric Miroslav Method for Annual Performance Analysis of IP Networks above 70GHz (Invited paper) 234

3.8. Vujić Dejan Estimation of UMTS RAN Resources for Special Events (Invited paper) 242

3.9. Simić Mirjana, Stojković Nikola Indoor Positioning Based on Experimental Space Segmentation Method 248

3.10. Škrbić Mirko, Huseinović Kemal, Korda Selmedin, Kasumagić Lamija, Hebibović Alisa Web-based Service Implementation via GSM Network 252

3.11. Nikolikj Vladimir, Janevski Toni Profitability and Comparative Cost-Capacity Analysis of 5G Millimeter-Wave Systems 256

3.12. Veljović Zoran, Urošević Ugljesa Unapređenje performansi virtuelnih QOSTBC sistema 260

СЕКЦИЈА 3: РАДИО-КОМУНИКАЦИЈЕ (РК)SECTION 3: RADIO COMMUNICATIONS (RC)

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3.13. Marković Goran Cooperative Modulation Classification by Using Multiple Sensors in Dispersive Fading Channels (Invited paper) 264

3.14. Mehdawi Meftah, Riley Nick, Ammar Mahmoud, Fanan Anuar, Zolfaghari Mahsa

Experimental detection Using Cyclostationary Feature Detectors for Cognitive Radios 2723.15. Erić Miljko, Janjić Miloš

A solution to coexistence of OFDM and FH signals based on principles of cognitive radio implemented on USRP N210 platform 276

3.16. Berbakov Lazar, Beko Marko Simultaneous Distributed Carrier Synchronization and Data Transmission in Wireless Sensor Networks 280

3.17. Erić Miljko, Vučić Desimir Some System Aspects of Spectrum Sensing 284

3.19. Dimić Goran, Bajić Dragana, Beko Marko Energy- and Spectral-Efficiency Increase while Constraining Interference using Regenerative Relay 288

3.20. Shakhov Vladimir Tradeoff Between Energy Harvesting Duration and Reliability in Wireless Sensor Networks 292

3.21. Hajdarevic Kemal, Konjicija Samim, Subasi Abdulhamit A Low Energy APRS-IS Client-Server Infrastructure Implementation using Raspberry Pi 296

3.22. Ilić Dalibor, Šunjevarić Milan Contribution of energy efficiency in a heterogeneous mobile network 300

3.23. Zogović Nikola State-of-the-art low-power transceivers for the next generation of wireless sensor networks motes 304

3.24. Mišić Jelena, Marković Vera, Marinković Zlatica, Budimir Djuradj Behavioral Modeling of Low Noise Amplifiers for LTE Systems Based on Modified Elman Neural Networks 308

3.25. Božović Rade Smanjenje PAPR parametra 16-QAM OFDM signala primenom algoritma dinamičke modifikacije konstelacionog dijagrama 312

4.1. Dimitrijević Bojan, Milošević Nenad, Paunović Đorđe, Nikolić Zorica Optimization of the Frame Synchronization Algorithm for OFDM Communications 316

4.2. Casu George, Tuta Leontin, Nicolaescu Ioan, Moraru Cătălin Some aspects about the advantages of using MIMO Systems 320

4.3. Papazoglou Panagiotis, Karras Dimitrios, Papademetriou Rallis On Improved Modeling and Simulation of Wireless Communication Systems using Multi-agent and Multi-threading Systems Architectures for efficient spectrum reuse 324

4.4. Zogović Nikola, Bajić Dragana, Dimić Goran A real ARQ Scheme for Improving Decision Space Resolution 328

СЕКЦИЈА 4: СИСТЕМИ ПРЕНОСА СИГНАЛА (СПС)SECTION 4: COMMUNICATIONS SYSTEMS (CS)

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4.5. Esenogho Ebenezer, Walingo Tom Primary Users ON/OFF Behaviour Models in Cognitive Radio Networks N/A

4.6. Esenogho Ebenezer, Walingo Tom Impact of Primary Users on Secondary User’s Channels in Centralized Cognitive Radio networks N/A

4.7. Kalman Gyorgy Applicability of Software Defined Networking in Industrial Ethernet 340

4.8. Kosanovic Mirko, Stojcev Mile Energy efficiency of sensor nodes (Invited paper) 344

4.9. Mijuskovic Jelena, Bukvic Branko, Neskovic Natasa, Males-Ilic Natasa, Budimir Djuradj Compensation of Nonlinear Distortion in RF Power Amplifiers by Injection for LTE Applications 352

4.10. Hadjloum Massinissa, El Gibari Mohammed, LI Hongwu, Daryoush Afshin S. Ultra-Wideband GCPW-CMS-GCPW Transition for Characterization of All-optical ADCs Based on Leaky Waveguide Deflector 356

4.11. Kovac Martin, Nagy Gabriel, Stopjakova Viera, Arbet Daniel Design of CMOS Integrated UWB Antenna for Implantable Biosensors 360

4.12. Stanivuk Stefan, Krunić Momčilo, Kovačević Jelena One solution of G.722 codec on embedded platform 364

4.13. Tucic Milan, Pavlovic Roman, Papp Istvan, Saric Djordje Networking Layer for Unifying Distributed Smart Home Entities 368

4.14. Spasov Dejan, Ristov Sasko, Gusev Marjan Enhancing and Simulating the RIP Routing Protocol in Cloud 372

4.15. Anastasov Jelena, Stefanović Mihajlo Impact of fading/shadowing correlation on outage performance of SSC receiver (Invited paper) 376

4.16. Petkovic Milica, Zdravković Nemanja, Đorđević Goran Outage performance of switch-and-examine combining receiver over FSO Gamma-Gamma atmospheric turbulence with pointing errors 383

4.17. Delibasic Maja, Pejanović-Djurišić Milica Selective Cooperative Relaying System with Polarization Diversity 387

4.18. Perişoară Lucian Andrei, Stoian Rodica, Săcăleanu Dragoş Ioan, Stoichescu Dan Alexandru A New Stopping Criterion for Turbo Decoders Based on the Minimization of Error Probability 391

4.19. Ilievska Natasha, Gligoroski Danilo Simulation of Some New Models of Error-Detecting Codes 395

4.20. Uryvsky Leonid, Moshynska Alina, Osypchuk Serhii Algorithm of choice a multiposition keying in wireless system with LDPC coding 399

4.21. Dipietro Salvatore, Epiphaniou Gregory, Freiderikos Vasilis, Maple Carsten Downhill+: An Improved Trust-based Path Selection Algorithm for the Tor Relay Network N/A

4.22. Vasic Selena Diversity techniques in mitigating the effects of kappa-mu fading and interference in wireless digital telecommunication systems (Invited paper) 407

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4.23. Dobrilovic Dalibor, Odadzic Borislav, Stojanov Zeljko, Sinik Vladimir Testing Zigbee RF module applicability for usage in temperature monitoring systems 415

4.24. Bostjancic Rakas Slavica, Timcenko Valentina Quality of service and security issues in MANET environment 419

4.25. Kabović Anka, Kabović Milenko, Čelebić Vladimir Realizacija softvera za komunikaciju po standardu IEC61850 na nanoRISC MSC hardverskoj platformi 423

4.26. Jaćimović Nikola, Planić Bratislav Vremenska optimizacija hardverske implementacije AES-256 algoritma 427

4.27. Nikolić Vojkan, Dragović Rade Interoperabilnosti i bezbednost eGovernment Republike Srbije N/A

5.1. Jakovljević Nikša Gaussian Mixture Model with Precision Matrices Approximated by Sparsely Represented Eigenvectors (Invited paper) 435

5.2. Ilić Aleksandar, Cvetković Zlata, Pavlović Vlastimir Analysis of new special Gegenbauer filters generated by Christoffel-Darboux formula (Invited paper) 441

5.3. Banjac Zoran, Kovačević Branko, Kostić-Kovačević Ivana Variable Forgetting Factor Estimation in Impulsive Noise Environment 449

5.4. Bartl Matouš, Čermák Karel Implementation of Artificial Neural Network with adaptable topology on fixed-point embedded systems 453

5.5. Medenica Milica, Zuković Sanja Statistička analiza parametara neiterativnog algoritma za rekonstukciju kompresivno odabranih signala 457

5.6. Babic Djordje, Vukotić Selena Estimation of the number of polynomial segments and the polynomial order of prolonged Farrow structure 461

5.7. Stošić Biljana, Pavlović Vlastimir, Milić Dejan Performances of the Novel Modified CIC FIR Filter Functions 465

5.8. Barbarić Žarko, Pavlović Aleksandra, Nikolić Vera The estimated temperature error using an infrared thermal imaging camera 469

5.9. Birdić Radovan, Kaštelan Ivan, Lukač Željko, Samardžija Dragan, Temerinac Miodrag Okruženje za izradu laboratorijskih vežbi iz oblasti obrade signala 473

5.10. Fiala Pavel, Linhart Richard High performance VHDL FIR filter structure for symbol timing system implemented on FPGA 477

5.11. Dujković Dragi, Dedić Nešić Snežana, Grubišić Lenkica, Paskaš Milorad, Reljin Irini Matched Crystal Filters 481

5.12. Grubišić Lenkica, Dedić Nešić Snežana, Dujković Dragi, Reljin Branimir, Gavrovska Ana Definisanje uslova naparavanja elektroda u obliku tankog metalnog filma za novu kristalnu jedinku SC reza 485

СЕКЦИЈА 5: ОБРАДА СИГНАЛА (ОС)SECTION 5: SIGNAL PROCESSING (SP)

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5.13. Šćepanović Nenad, Kaštelan Ivan, Lukač Željko, Očovaj Stanislav, Samardžija Dragan Optimizacija VP8 dekodera za obradu video signala 489

5.14. Orović Miloš, Pejaković Tamara Logo Watermarking for Image Protection in the Compressive sensing Scenario 493

5.15. Stanković Isidora, Orović Irena, Stanković Srdjan Image Reconstruction from a Reduced Set of Pixels using a Simplified Gradient Algorithm 497

5.16. Savić Slavica Multifocus Images Sets Fusion Using First Level of Empirical Mode Decomposition 501

5.17. Stojanović Branka, Nešković Aleksandar, Popović Zdravko, Lukić Vojislav ANN Based Fingerprint Image ROI Segmentation 505

5.18. Starčević Đorđe, Ostojić Vladimir, Petrović Vladimir Automatic radiography image orientation using machine learning 509

5.19. Ostojić Vladimir, Starčević Đorđe, Petrović Vladimir Artifact reduction in multiscale contrast enhancement for digital radiography 513

5.20. Murgia Francesca, Bollo Fernandez Sergio, Giusto Daniele, Perra Cristian Unfocused plenoptic camera calibration 517

5.21. Saboori Arash, Hosseini S. Abolfazl A New Method For Digital Watermarking Based on Combination of DCT and PCA 521

5.22. Domokos József, Stan Adriana, Giurgiu Mircea An Approach to Lexical Stress Detection from Transcribed Continuous Speech Using Acoustic Features 525

5.23. Uhrin Dominik, Partila Pavol, Voznak Miroslav, Chmelikova Zdenka, Hlozak Martin, Orcik Lukas Design and Implementation of Czech Database of Speech Emotions 529

5.24. Suzić Siniša, Pekar Darko, Delić Vlado On the Realization of AnSpeechCollector, System for Creating Transcribed Speech Database 533

5.25. Miler-Jerković Vera, Djurić-Jovičić Milica, Perović-Belić Minja, Ječmenica-Lukić Milica, Petrović Igor, Radovanović Saša, Kostić Vladimir, Popović Mirjana Multiple regression analysis of repetitive finger tapping parameters 537

5.26. Djurić-Jovičić Milica, Bobić Vladislava, Ječmenica-Lukić Milica, Petrović Igor, Radovanović Saša, Jovičić Nenad, Kostić Vladimir, Popović Mirjana Implementation of continuous wavelet transformation in repetitive finger tapping analysis for patients with Parkinson's disease 541

5.27. Isaković Milica, Miljković Nadica, Popović Mirjana Classifying sEMG-based Hand Movements by Means of Principal Component Analysis 545

5.28. Mohseni Sina, Ardeshir Gholamreza, Zarei Niloofar Facial Expression Recognition Based on Anatomical Structure of Human Face N/A

5.29. Mijatović Gorana, Procyk Emmanuel, Lončar Turukalo Tatjana Statistical approach to inter-spike interval ramps 553

5.30. Lekomtcev Demian, Marsalek Roman Evaluation of Kolmogorov - Smirnov Test for Cooperative Spectrum Sensing in Real Channel Conditions 557

5.31. Draganić Andjela, Orović Irena, Stanković Srdjan Blind Signals Separation in wireless communications based on Compressive Sensing 561

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5.32. Stanković Srdjan, Orović Irena, Pejaković Tamara, Orović Miloš Compressive sensing reconstruction of signals with sinusoidal phase modulation: application to radar micro-Doppler 565

5.33. Djukanović Slobodan, Simeunović Marko Adaptive Order Selection in Quasi-Maximum Likelihood-Based IF Estimation 569

5.34. Daković Miloš, Stanković Ljubiša, Orović Irena Adaptive Gradient Based Algorithm for Complex Sparse Signal Reconstruction 573

5.35. Vujović Stefan, Daković Miloš, Stanković Ljubiša Comparison of the L1-magic and the Gradient Algorithm for Sparse Signals Reconstruction 577

5.36. Lyashev Vladimir, Maksimov Mikhail, Merezhin Nikolai Non-Linear Optimization Scheme for Non-Orthogonal Multiuser Access 581

5.37. Jevtić Miloš, Marković Ksenija, Pajić Tanja, Mišić Branislav, Šmidling Bojan Track-to-track Fusion Module for Network-centric Air Surveillance Applications 585

6.1. Kralevska Katina, Øverby Harald, Gligoroski Danilo Joint Balanced Source and Network Coding 589

6.2. Karamitsos Ioannis, Ali Alsaiagh Fahad, Apostolopoulos Christos Future and Trends of Optical Transport Networks 593

6.3. Belkin Mikhail, Khmelnitski Ivan, Aheev Sergei, Karaulov Alexander, Myagkov Igor, Gladyshev Igor A Method to Combine Communication and Safeguard Functions within One Fiber-Optic Access Network 597

6.4. Radivojevic Mirjana, Matavulj Petar Analiza troškova izgradnje multiservisne EPON mreže na teritoriji grada Beograda N/A

6.5. Buhafa Adel, Al-Nedawe Basman, Sibley Martin, Mather Peter VLC System Performance using Dicode Pulse Position Modulation over an Indoor Diffuse Link 605

6.6. Stojanovic Nebojsa, Qiang Zhang, Prodaniuc Cristian Fractionally Spaced MLSE in Bandlimited Optical Systems using Intensity Modulation and Direct Detection 609

6.7. Kliros George, Pilakoutas Elias Stretching of Short Pulses through Transmission in Non-linear Photonic Crystal Fibers 613

6.8. Pajković Rastko, Krstić Marko, Crnjanski Jasna, Totović Angelina, Gvozdić Dejan Phase Space of Tristability in Dual Injection-Locked Fabry-Perot Laser Diodes 617

7.1. Grujić Dušan, Saranovac Lazar Design of Monolithic Microwave Integrated Circuits for 60 GHz Band(Invited paper) 621

7.2. Tsitsos Stelios, Anastassiu Hristos, Papatsoris Anastasios 3-Way Wide-Band Planar Power Divider 629

СЕКЦИЈА 6: ПРИМЕЊЕНА ЕЛЕКТРОНИКА (ПЕЛ)SECTION 6: APPLIED ELECTRONICS (AEL)

СЕКЦИЈА 7: ПРИМЕЊЕНА ЕЛЕКТРОНИКА (ПЕЛ)SECTION 7: APPLIED ELECTRONICS (AEL)

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7.3. Klisić Djordje, Radovanović Ilija, Bežanić Nikola, Stamenić Ljubisav, Popović Ivan Voltage Controlled Power Characteristics of a Custom Made Laser Diode Assembly 633

7.4. Zivanovic Zoran, Smiljakovic Vladimir Design and Realization of eGaN FET DCDC Converter 637

7.5. Marinković Zlatica, Aleksić Ana, Pronić-Rančić Olivera, Marković Vera, Vietzorreck Larissa Analysis of RF MEMS Capacitive Switch based on the Switch Resonant Frequency ANN Model 641

7.6. Valda Lukás, Křibský Petr, Žahour Jiří, Křivka Jindřich Replacement of the Mains Voltage by Reconfigurable Li-ion Battery for 4kW Power Inverter 645

7.7. Křibský Petr, Křivka Jindřich, Valda Lukáš, Žahour Jiří Li-Ion state of charge estimation methods 649

7.8. Karydopoulos Panagiotis, Frantzis Panagiotis, Karagiannis Nikolaos Structure of Ball Grid Array/Permanent Semi-Elastomeric Thermally Conductive Crumb Rubber Reinforced Bituminous Stencil/Printed Circuit Board Interconnects 652

7.9. Musu Claudia, Popescu Vlad, Giusto Daniele Workplace Safety Monitoring using RFID Sensors 656

7.10. Simić Mitar Complex Impedance Measurement System for Environmental Sensors Characterization 660

7.11. Petruševski Ivan, Živanović Miloš, Rakić Aleksandar, Popović Ivan Novel AMI Architecture for Real-Time Smart Metering 664

7.12. Prokopenko Nikolay, Butyrlagin N. V., Pakhomov I. V. The Method of Increasing of the Voltage Gain of the Classical Differential Stages with Passive Resistive Load 668

7.13. Prokopenko Nikolay, Butyrlagin N. V., Pakhomov I. V. The High Frequency Cascode Amplifiers with the Combined Circuits of the Inherent Compensation of the Cross Capacitance of the Output Transistor and Resistor of the Load 671

7.14. Susi Gianluca, Cristini Alessandro, Salerno Mario, Daddario Emiliano A Low-cost Indoor and Outdoor Terrestrial Autonomous Navigation Model. 675

7.15. Hodžić Mujo, Suljanović Nermin, Mujčić Aljo Modelovanje i simulacija metal oksidnih varistora pomoću Verilog-A jezika 679

7.16. Cermak Karel, Bartl Matous Aid for pre-mathematical imaginations improvement 683

7.17. Elis Ludek, Turjanica Pavel, Polacek Libor, Piterka Lubos Evaluation of REMCS Control System for Safety Applications 687

7.18. Pušman Lukáš, Kosturik Kamil Integration of Digimatic Measuring Tool into LinuxCNC Controlled Milling Machine by Using MODBUS 691

7.19. Nikolić Marko, Kosić Bojan, Milanović Milan, Antonić Nenad, Stojković Željko, Kokić Ivan Railway Axle Counter Prototype 694

7.20. Kokić Ivan, Nikolić Marko, Kosić Bojan, Milanović Milan, Antonić Nenad, Stojković Željko Railway Axle Counter Remote Supervision System 698

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7.21. Mihajlović Živorad, Milosavljević Vladimir, Rajs Vladimir, Milivojčević Filip, Živanov Miloš Miniature low cost sensor for measurement of gas concentration accessible via RS-485 interface for industrial and environmental application 702

7.22. Křivka Jindrich, Křibský Petr, Valda Lukás, Žahour Jiří, Kosturik Kamil Autonomous Control System of Electrically Regenerable Diesel Particulate Filter for Light Duty Vehicles 706

7.23. Žahour Jiří, Křivka Jindřich, Kosturik Kamil, Křibský Petr, Valda Lukáš Electrical glowing of filtering elements in the DPF filter 710

7.24. Marković Dušan, Pešović Uroš, Ranđić Siniša Koncept prenosa podataka kod uređaja zasnovanih na CC430F5137 mikrokontroleru prema IEEE 1451.0 standardu 713

7.25. Rajović Vladimir, Savić Goran, Prokin Milan Hardware Realization of Fast Image Encoder with Minimum Memory Size (Invited paper) 717

7.26. Savić Goran, Prokin Milan, Rajović Vladimir, Prokin Dragana Direktno filtriranje i dekompozicija slike sa minimalnim korišćenim resursima 725

7.27. Savić Goran, Prokin Milan, Rajović Vladimir, Prokin Dragana Inverzno filtriranje i kompozicija slike sa minimalnim korišćenim resursima 729

7.28. Kefalas Nikolaos, Theodoridis George A Hardware Implementation of the JVT Rate Control for H.264 733

7.29. Popovic Ivan, El Mezeni Dragomir, Jankovic Strahinja, Saranovac Lazar Load monitoring module for multiprocessor performance optimization 737

7.30. Milanović Milan, Čelebić Vladimir, Salom Iva, Prezelj Jurij, Todorović Dejan Projektovanje i realizacija FPGA platforme za akviziciju i obradu akustičkih signala u realnom vremenu 741

7.31. Broulím Pavel, Broulím Jan, Georgiev Vjačeslav, Moldaschl Jan Very high resolution time measurement in FPGA 745

8.1. Mančić Žaklina J., Petrović Vladimir V. Jaka formulacija metode konačnih elemenata za 2D kvazistatičke probleme i primena na vodove (Invited paper) 749

8.2. Radonić Vasa, Crnojević-Bengin Vesna, Schoeman Dewald, de Villiers Dirk Multi-layer Frequency Selective Surfaces with Wideband Response and Their Modelling 757

8.3. Janičić Vladan, Ilić Velibor, Pjevalica Nebojša, Nikolić Miloš An approach to modeling the hysteresis in ferromagnetic by adaptation of Preisach model 761

8.4. Lazović Luka, Jovanović Ana, Rubežić Vesna Analiza performansi Capon i Capon-like algoritama primijenjenih na cirkularnim antenskim nizovima 765

8.5. Dessi Simone, Fanti Alessandro, Valente Giuseppe, Mazzarella Giuseppe, Montisci Giorgio, Pisanu Tonino Low Cost Elliptic Filter for Wireless Application 769

СЕКЦИЈА 8: ПРИМЕЊЕНА ЕЛЕКТРОМАГНЕТИКА (ПЕМ)SECTION 8: APPLIED ELECTROMAGNETICS (AEM)

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8.6. Bjelić Slobodan, Marković Nenad, Živanić Jeroslav, Jakšić Uroš Frekventne karakteristike filtra u mernim članovima relejne zaštite 773

8.7. Popović Nenad, Manojlović Predrag Zaštita LNA na X-opsegu sa PIN- diodnim limiterom za veće RF snage 777

8.8. Milijić Marija, Nešić Aleksandar, Milovanović Bratislav, Radnović Ivana Wideband Printed Antenna Array in Corner Reflector with Cosecant Square-Shaped Beam Pattern 780

8.9. Dimitrijević Tijana, Joković Jugoslav, Dončov Nebojša, Atanasković Aleksandar, Blau Kurt TLM Analysis of the Inverted Microstrip Patch Antenna in a Cylindrical Grid 784

8.10. Ghasemi Najm Fariba, Moshtaghpour Amirafshar, Kaboli Mohsen Modeling, Design And Optimization Of Dual Mode Circular Planar Monopulse Slot Array Antenna In X-band 788

8.11. Aksoy Ertugrul Harmonic Beam Steering in 4D Linear Arrays through Pulse Difference 792

8.12. Musu Claudia, Fanti Alessandro, Giusto Daniele Wereable Rectangular Patch Antenna for ICT Application: Dosimetry evaluation 795

8.13. Gholami Reza, Zakeri Bijan, Abedi Hajar Synthesis of Linear and Circular Antenna Arrays for Null Imposing and Side Lobe Level Reduction Using Particle Swarm Optimization N/A

8.14. Privalova Tatiana, Yukhanov Yury, Lesov Valentin Radiation and scattering characteristics of wave-guide and horn radiators as a part of a finite array 803

8.15. Geambasu Dragos, Tuţă Leontin, Banciu Marian G., Nedelcu Liviu, Nicolaescu Ioan, Tuta Leontin Compact antenna using ZST low-loss high dielectric constant material 807

8.16. Akuru Udochukwu, Mbunwe Josephine, Okoro Ogbonnaya Future Energy Generation using Solar Power Satellites N/A

8.17. Lagunov Alexey, Surovtsev Anatoly, Terekhin Vladimir, Belugin Anton, Korobitsyn Denis, Glavatskih Vitaly, Danilochkin Pavel Features of Supply of Telecommunications in the Arctic 814

8.18. Spano Ivan, Serpi Alessandro, Fanti Alessandro, Nissardi Vincenzo, Lai Andrea, Caredda Valentino, Orru Francesco, Mazzarella Giuseppe, Marongiu Ignazio, Gatto Gianluca Electromagnetic Compatibility Analysis of RFId and Implantable Medical Devices 818

8.19. Gholami Reza, Zakeri Bijan, Abedi Hajar, Mohseni Sina Competition Over Resources Algorithm and Its Application for Planar Array Pattern Synthesis N/A

8.20. Balegh Hadi, Arand Bijan Abbasi Analysis of a Microwave Hybrid Graphene-Metal Branch Line Coupler N/A

8.21. Semenikhina Diana, Semenikhin Andrey, Yukhanov Yury Synthesis of the anisotropic impedance cylinder on the given polarization of the scattered field 830

8.22. Kozhevnikov Vasily, Klimov Aleksei, Kozyrev Andrey Simulation and optimization of dummy loads for microwave calorimeters 834

8.23. Khorramian MReza, Ebrahimzadeh Ataollah, Zakeri Bijan Designing a Carpet Cloak for a PEC Half Circle Using Conformal Mapping N/A

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9.1. Vasić Bata Annotation of cultural heritage 3-D models by robust data embedding in the object mesh (Invited paper) 842

9.2. Perra Cristian On the coding of plenoptic raw images 850

9.3. Jaume-i-Capó Antoni, Samčović Andreja Vision-based interaction as an input of serious game for motor rehabilitation 854

9.4. Pijetlović Stefan, Bašičević Ilija, Kovačević Đorđe, Teslić Nikola A solution of an ontology used as a data model for an Internet content provider 858

9.5. Knežević Milan, Pejić Stefan, Jovanov Nevena, Stefanović Dejan Ispitivanje horizontalno proširivih rešenja za skladištenje podataka u sistemu za prikupljanje i preporuku multimedijalnog sadržaja 862

9.6. Abdulrazaq Muhammad Bashir, Ahmed Mohammed Zaki, Davey Paul Two Dimensional Equalisation of Shingled Write Disk N/A

9.7. Trailović Stefan, Berbakov Lazar, Todorović Dejan, Ristić Vukašin, Nenadić Nikola, Salom Iva Analiza kvaliteta različitih realizacija AAC audio kodeka na ARM procesorskim arhitekturama 869

9.8. Bilibajkić Ružica, Furundžić Draško, Subotić Miško Primena neuralnih mreža u detekciji patološkog izgovora srpskih glasova 873

9.9. Ferenc Goran, Popović-Božović Jelena An Infinite Beam Laser Harp with External MIDI I/O Functionality 877

9.10. Gavrovska Ana Computer-based analysis of cardiac sounds based on multiscale techniques (Invited paper) 881

9.11. Jovanović Vedran, Risojević Vladimir Evaluation of Bag-of-Colors Descriptor for Land Use Classification 889

9.12. Peić Tukuljac Helena, Nađ Dejan, Stupar Goran, Bjelica Milan Z.

A solution of a DTV recommendation engine based on broadband and broadcast data 8939.13. Milivojević Milan, Mišković Božimir, Reljin Irini

Possible scenarios of HDTV and UHDTV programmes broadcasting within DVB-T2 8979.14. Miličević Zoran, Bojković Zoran

HEVC Performance Analysis for HD and Full HD Applications 9019.15. Uhrina Miroslav, Sevcik Lukas, Frnda Jaroslav, Vaculik Martin

Impact of H.265 and VP9 Compression Standards on the Video Quality for 4K Resolution 905

9.16. Joldzic Ognjen, Djuric Zoran, Vukovic Dijana Experiences and Challenges in Implementing Adaptive Bitrate Multimedia Streaming for Live Multimedia Content 909

9.17. Jovanović Nenad, Milosević Milena, Teslić Nikola, Maruna Tomislav Predlog koncepta preporuke HbbTV aplikacija i njihovog sadržaja korisnicima 913

9.18. Jovanović Nenad, Vukobrat Violeta, Peić Tukuljac Helena, Velikić Ivan One solution of a cloud based DTV extended data provider 916

СЕКЦИЈА 9: МУЛТИМЕДИЈА (ММ)SECTION 9: MULTIMEDIА (MM)

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10.1. Bašičević Ilija, Četić Nenad, Popović Miroslav, Krunić Momčilo A Light-weight SIP-based Execution Management Service for Bag-of-tasks Grid System 919

10.2. Ristovski Zlatko, Mishkovski Igor, Gramatikov Sasho, Filiposka Sonja Parallel Implementation of the Modified Subset Sum Problem in CUDA 923

10.3. Đogić Ervin, Nosović Novica Service level agreement (SLA) in a cloud based information systems 927

10.4. Đorđević Borislav, Jovanović Slobodan, Timčenko Valentina Cloud Computing in Amazon and Microsoft Azure platforms: performance and service comparison 931

10.5. Gusev Marjan, Kostoska Magdalena, Ristov Sasko Cloud P-TOSCA Porting of N-tier Applications 935

10.6. Kovačević Ana Cyberbullying detection using web content mining 939

10.7. Ilic Milos, Spalevic Petar, Veinovic Mladen Inverted Index Search in Data Mining 943

10.8. Ridic Ognjen, Plojovic Semsudin, Busatlic Senad, Ridic Goran Elektronski medicinski rekord (EMR) kao jedan od prioriteta inovacijskog menadžmenta u zdravstvu 947

10.9. Stylios Ioannis, Vlachos Vasileios, Androulidakis Iosif Performance Comparison of Machine Learning Algorithms for Diagnosis of Cardiotocograms with Class Inequality 951

10.10. Đurović Marko, Janković Milica, Koljević Marković Ana Semiautomatska lokalizacija paratiroidnih tumora na dinamskim sestamibi scintigramima 955

10.11. Milenković Aleksandar, Janković Dragan, Rajković Petar, Stojković Marija, Veljanovski Aleksandar Softverski modul za menadžment medikamenata i njegova integracija sa MIS-om 959

10.12. Hasanbegović Haris, Nosović Novica Evaluation of Typical Transaction Based Information Systems Response Time – Lessons Learned 963

10.13. Gusev Marjan, Ristov Sasko, Gushev Pano, Velkoski Goran Alert Notification as a New Model of Internet-based Transactions 967

10.14. Pandurov Milan, Lazarevic Ivan, Pavlovic Roman, Smiljkovic Nikola Unified Device Access in Home Automation Environment 971

10.15. Stankić Bojan, Kojić Darko, Cvetanović Miloš, Dukić Miloš, Stojanović Saša, Radivojević Zaharije ERLE: Embedded Run Length image Encoding 975

10.16. Jagodić Dijana, Vujičić Dejan, Pešović Uroš, Ranđić Siniša Koncept protoniti kod embedded sistema 979

10.17. Bokan Dejan, Đukić Miodrag, Popović Miroslav, Četić Nenad Adjustment of GCC compiler frontend for embedded processors 983

10.18. Skoko Vladan, Atlagic Branislav, Isakov Nemanja Comparative realization of IEC 60870-5 industrial protocol standards 987

СЕКЦИЈА 10: СОФТВЕРСКИ АЛАТИ И АПЛИКАЦИЈЕ (САА)SECTION 10: SOFTWARE TOOLS AND APPLICATIONS (STА)

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10.19. Bežanić Nikola, Đurić Radivoje, Popović Ivan Power Management in Service-oriented Smart Transducers Network 991

10.20. Lekić Aleksandra Automated DC-DC Converters Symbolic State-Space Model Generation by the Use of Free Software 995

10.21. Ćalasan Martin, Džankić Radoje, Bauk Sanja, Perovich Slavica N-components’ R diode circuits analysis by Special Trans Functions Theory N/A

10.22. Banjac Bojan, Petrović Maja, Malešević Branko Visualization of Weber’s curves and surfaces with applications in some optimization problems 1003

10.23. Szabó Roland, Gontean Aurel Image Acquistion with Linux on FPGA 1007

10.24. Trifunović Bojan, Mihailović Veljko, Ignjatov Nemanja, Simikić Rade, Velikić Ivan Realizacija okruženja za dinamičko prevođenje i izvršavanje TR-069 agentskog servisa za digitalne televizijske prijemnike sa Android OS 1011

10.25. Milosevic Milena, Radonjic Mario, Mlikota Boris, Maruna Tomislav One implementation and design of HbbTV framework for Android based DTV applications 1015

10.26. Virginás-Tar Áron, Baba Marius, Gui Vasile, Pescaru Dan, Jian Ionel Vehicle Counting and Classification for Traffic Surveillance using Wireless Video Sensor Networks 1019

10.27. Lutovac Miroslav, Lutovac Aleksandra Vickrey Auction Game as Mathematica Application 1023

10.28. Saković Nenad WebCall – webco servis za integraciju weba i telefonije na primeru Sellex.rs web market platforme – Case Study 1027

10.29. Nejkovic Valentina, Tošić Milorad Wiki Based E-learning Platform for Academic Courses (Invited paper) 1031

10.30. Stanisavljević Žarko, Drašković Dražen, Mišić Marko Primena Moodle platforme u nastavi računarske tehnike i informatike 1039

10.31. Purić Sofija, Romić Uroš, Nikolić Boško Realizacija Android aplikacije za potrebe zaposlenih na fakultetu 1043

10.32. Atlagić Branislav, Čokić Mita, Šagi Mihalj Concept of a SCADA system designed for education and research 1047

10.33. Ignjatović Miroslava, Bojić Dragan, Furlan Bojan, Tartalja Igor Potencijal tehnike pronalaženja znanja za automatsko sastavljanje testova 1051

10.34. Mišić Marko, Gajin Slavko Korišćenje Mininet okruženja za simulaciju softverski definisanih mreža 1055

10.35. Filippou Alexander, Karras Dimitrios On the Efficient Design of a Generic Emulator Module towards Precise Simulation of Wireless Sensor Networks Using XML 1059

10.36. Christoforidis Christoforos, Vlachos Vasileios, Androulidakis Iosif A Crowdsourcing Approach to Protect Against Novel Malware Threats 1063

10.37. Vukovic Dijana, Djuric Zoran, Gligoroski Danilo CryptoCloak - improvement proposal implementation 1067

10.38. Liparas Dimitris, Totlis Ioannis, Angelis Lefteris, Stamelos Ioannis Predicting Fault-Prone Software Components in Telecommunication Assembly Patches with Imbalanced Datasets 1071

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10.39. Savić Branko, Adamović Živoslav, Ilić Božo, Grujić Goran Analiza uticaja termografskih dijagnostičkih kontrola na porast nivoa pouzdanosti računarskih sistema 1075

10.40. Krunić Momčilo, Četić Nenad, Popović Miroslav, Považan Ivan Unit Test Case Generator and Automated Regression Testing in Terms of Firmware Development 1079

10.41. Šutić Davor, Atlagić Branislav Performance evaluation of various Bailey–Borwein–Plouffe-type formulae 1083

10.42. Kovacevic Branimir, Kovačević Marko, Stefanovic Dejan, Pekovic Vukota Scenario-Based Set-Top Box testing 1087

10.43. Kovačević Marko, Kovacevic Branimir, Pekovic Vukota, Stefanovic Dejan Framework for Automatic Testing of Set-Top Boxes 1091

10.44. Mijailović Žarko, Milićev Dragan CAPWISE – A Domain-Specific Language for Developing Graphical User Interfaces (Invited paper) 1095

10.45. Radonić Slavko, Đukić Miodrag, Popović Miroslav, Četić Nenad

Jedno rešenje kompajlerske optimizacije za premeštanje invarijantnog koda van petlje 110310.46. Popovic Miroslav, Kordic Branislav

PSTM: Python Software Transactional Memory 110610.47. Škorput Pero, Mandžuka Bia, Vujić Miroslav

Razvoj kooperativnih multimodalnih putnih vodiča 111010.48. Ivanovska Bisera, Ristov Sasko, Gusev Marjan, Jakimovski Boro

Application for Modern Energy Efficient Data Center 111410.49. Ignjatov Nemanja, Bjelica Milan Z., Ćetković Mića, Radovanović Saša

Integration of Lua script interpreter for automatic device configuration using TR-069 111810.50. Denić Nebojša, Nešić Zoran, Radojičić Miroslav

Software Projects Quality Management in the Function of ERP System Implementation 1122

10.51. Prodanović Dejan, Furlan Bojan, Nikolić Boško Analiziranje sadržaja tekstova upotrebom ontologije i semantičke sličnosti 1126

10.52. Perra Cristian A low computational complexity blockiness estimation based on spatial analysis 1130

10.53. Čelar Stipe, Turić Mili, Vicković Linda Method for personal capability assessment in an agile teams using personal points 1134

10.54. Milinković Aleksandar, Milinković Stevan, Lazić Ljubomir Some experiences in building IoT platform 1138

10.55. Denić Nebojša, Nešić Zoran, Radojičić Miroslav, Vesić Vasović Jasmina Some Considerations on Business Intelligence Application in Business Improvement 1142

10.56. Kolic Kristina, Ristov Sasko, Gusev Marjan A model of SaaS e-Business Solution 1146

10.57. Borovina Nihad, Bošković Dušanka, Dizdarević Jasenko, Bulja Kenan, Salihbegović Almir Heuristic Based Evaluation of Mobile Services Web Portal Usability 1150

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11.1. Nikolić Nemanja Implementacija eho audio efekta u programskom paketu MATLAB N/A

11.2. Stančić Aleksandar, Prokopijević Marija, Vasiljević Jelena Softver za primenu multifraktalne analize pri klasifikaciji metastatskih tumora kostiju N/A

11.3. Nedjeljkovic Mladen Personalized application for estimation of electromagnetic emission of base stations N/A

11.4. Vedula Yashasvi Leveraging Smartphone Technology to Enhance Emergency Response Services N/A

11.5. Radović Nikola, Raičević Ljubomir Simulation and Visualization of Scheduling of Periodic Tasks in Real-Time Computing and Communication Systems N/A

11.6. Kırkağaç Yağmur, Talić Ammar, Veselinović Slađan Application of Short Range Ultrasonic Wireless Communication to Smart Plug N/A

11.7. Grković Sava Small Loop Antennas for Bluetooth Chips N/A

11.8. Ojaroudi Nasser Frequency Reconfigurable Microstrip Antenna Integrated with PIN Diodes for Cognitive Radio N/A

11.9. Ojaroudi Nasser Novel Design of Low-Profile Microstrip Band-Stop Filter (BSF) with Koch Fractal RSLRs N/A

11.10. Ojaroudi Nasser Microstrip-Fed Antenna Design for Use in Circular Cylindrical Microwave Imaging Applications N/A

11.11. Shabanpour Ebrahim Passive defense in appropriate location of base stations in mobile communication networks N/A

СЕКЦИЈА 11: СТУДЕНТСКА СЕКЦИЈА (С)SECTION 11: STUDENT PАPERS (S)

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