Dodatne informacije

• Lični podaci

• Datum rođenja: 26.05.1973.
• Mesto rođenja: Beograd

• Obrazovanje

• Fakultet: Elektronski fakultet Niš
• Odsek / Grupa / Smer: Mikroelektronika
• Godina diplomiranja: 1999.

• Spisak publikacija

• Knjige i udžbenici:

  Lj. Vračar, M. Stojanović, J. Vračar, "Laboratorijski praktikum sa primerima za samostalan rad iz predmeta SENZORI I PRETVARAČI", ISBN 978-86-6125-223-5

• Radovi u časopisima sa IMPACT faktorom:
  
  
  • Milan D. Stojanović, Ljubomir M. Vračar, Dragana U. Živaljević, Ilija Neden Dimitriu, “The practical design of a vehicle magnetic signature generator”, Transactions of the Institute of Measurement and Control. (2023); 45(8):1505-1514. doi: 10.1177/01423312221142557
  
  
  
  

   

  
  
  
  
  • Srdjan Stojicic, Miloš Milovančević, Dragan Milčić, Boban Andjelkovic, Ljubomir Vračar: „Optimization of train diesel engine for maximizing efficiency and driving quality using modified parameterized level‑set method“, Journal of Vibration Engineering & Technologies, Springer (2022), https://doi.org/10.1007/s42417-022-00557-1
  
  
  
  

   

  
  
  
  
  • Miloš Milovančević, Dragan Milčić, Boban Andjelkovic, Ljubomir Vračar: „Train driving parameters optimization to maximize efficiency and fuel consumption“, Acta Polytechnica Hungarica Vol. 19, No. 3, 2022, Special Issue on Up-to-Date Problems in Modern Railways. DOI: 10.12700/aph.19.3.2022.3.12, rang časopisa prema petogodišnjem impakt faktoru 2007-2019, IF 1.80
  
  
  
  

   

  
  
  
  
  • Milos Milovancevic, Aleksandar Dimov, Kamen Boyanov Spasov, Ljubomir Vračar, Miroslav Planić, „Neuro-Fuzzy Evaluation of the Software Reliability Models by Adaptive Neuro Fuzzy Inference System“, Journal of Electronic Testing, Springer 37, 439–452 (2021). https://doi.org/10.1007/s10836-021-05964-y, rang časopisa prema petogodišnjem impakt faktoru 2007-2019, IF 0.888
  
  
  
  

   

  
  

  •Ljubomir M. Vračar, Milan D. Stojanović, Aleksandar S. Stanimirović and Zoran D. Prijić, “Influence of Encryption Algorithms on Power Consumption in Energy Harvesting Systems”, Journal of Sensors, Volume 2019, Article ID 8520562, https://doi.org/10.1155/2019/8520562

  
  

  • Lj.Vračar, A.Prijić, D.Vučković, Z.Prijić, “Capacitive Pressure Sensing Based Key in PCB Technology for Industrial Applications”, Sensors Journal, IEEE, DOI:10.1109/JSEN.2011.2173483 (2012)

  
  

  • Aneta Prijić, Danijel Danković, Ljubomir Vračar, Ivica Manić, Zoran Prijić and Ninoslav Stojadinović, “A method for negative bias instability (NBTI) measurements on power VDMOS transistors”, Measurement Science and Technology, vol.23, p. 8 (2012), ISSN 0957-0233 (Print), 1361-6501 (Online), DOI: 10.1088/0957-0233/23/8/085003, http://iopscience.iop.org/0957-0233/23/8/085003/

  
  

  • Aneta Prijić, Ljubomir Vračar, Zoran Pavlović, Ljiljana Kostić, Zoran Prijić, "The Effect of Flat Panel Reflectors on Photovoltaic Energy Harvesting in Wireless Sensor Nodes under Low Illumination Levels," IEEE Sensors Journal, Vol. 15, No. 12, pp. 7105-7111, (2015), ISSN: 1530437X, http://dx.doi.org/10.1109/JSEN.2015.2470548

  
  

  • Dejan Milić, Aneta Prijić, Ljubomir Vračar, Zoran Prijić, “Characterization of commercial thermoelectric modules for application in energy harvesting wireless sensor nodes”, Applied Thermal Engineering, No.121, pp.74–82, (2017), http://dx.doi.org/10.1016/j.applthermaleng.2017.04.037 (M21A)

  
  

  • Miloš Milovančević, Vlastimir Nikolić, Dalibor Petković, Ljubomir Vračar, Emil Vege, Natalija Tomica, Srđan Jović, “Vibration analyzing in horizontal pumping aggregate by soft computing”, Elsevier Measurement, Volume 125, September 2018, Pages 454-462, https://doi.org/10.1016/j.measurement.2018.04.100

  
  

  • E. Atanassova, N. Stojadinović, A. Paskaleva, D. Spassov, Lj. Vračar and M. Georgieva, “Constant voltage stress induced current in Ta2O5 stacks and its dependence on a gate electrode”, Sci. Semicond. Technol., Vol. 23, pp. 1-9 (2008).

  
  

  • Danijel Danković, Ljubomir Vračar, Aneta Prijić, and Zoran Prijić, “An Electromechanical Approach to a Printed Circuit Board Design Course”, IEEE Transaction on Education, vol. 56, no. 4, pp. 470-477 (2013), ISSN: 0018-9359, DOI: 10.1109/TE.2013.2257784
  http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6507652

  
  

  • Aneta Prijić, Ljubomir Vračar, Dušan Vučković, Dejan Milić, Zoran Prijić,“Thermal Energy Harvesting Wireless Sensor Node in Aluminum Core PCB Technology“, IEE Sensors Journal, Vol. 15, No. 1, pp. 337-345, (2015), ISSN: 1530437X

  
  

  • Ljubomir Vračar, Aneta Prijić, Damir Nešić, Saša Dević and Zoran Prijić, “Photovoltaic Energy Harvesting Wireless Sensor Node for Telemetry Applications Optimized for Low Illumination Levels”, Electronics 2016, 5(2), 26; https://doi.org/10.3390/electronics5020026

• Radovi u ostalim časopisima:

  • Ljubomir Vračar, Milan Stojanović, Jana Vračar, Miloš Milovančević, ”MQTT Enabled Device for Industrial Environment and Smart City”, Facta Universitatis, Series: Mechanical Engineering, University of Niš, accepted for publishing, preliminary DOI number 10.22190/FUME200901089V

  
  

  • V. Paunović, Lj. Živković, N. Stamenkov, Lj. Vračar, “Dielektrična svojstva akceptor-donor Ba(Ti,Mn,Nb)O3 kodopirane keramike“, TEHNIKA-NOVI MATERIJALI, 1, pp. 23-29 (2005).

  
  

  • Z. Petrušić, D. Mančić, Lj. Vračar, “Primena dvoosnog rotirajućeg uređaja u nezavisnim fotonaponskim sistemima”, Energetske tehnologije, broj 3, (2010).

  
  

  • Ljubomir Vračar, Miloš Milovančević, Petra Karanikić, ” Application of Smart Mobile Phones in Vibration Monitoring”, Facta Universitatis, Series: Mechanical Engineering, University of Niš, Vol. 13, No. 2, pp. 143-153, 2015, ISSN: 0354-2025,
  Web: http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/887/686.

  
  

  • V. Paunović, Lj. Živković, Lj. Vračar, V. Mitić, M.Miljković, „The effects of additive on microstructural and electrical properties of BaTiO3 ceramics“, Serbian Journal of Electrical Engineering, Vol.1, No.3 pp.89-98, (2004).

• Radovi na naučnim skupovima međunarodnog značaja:
  
  
  • B. Pešić, Lj. Vračar, N. Stojadinović, M. Pecovska-Djordjević, N. Novkovski, “Stress-Induced Leakage Currents in Thin Silicon Dioxide Films”, Proc. 12th International Scool on Condensed Matter Physics”- ISCMP’02, Varna, Bulgaria (2002).
  
  
  • Ljubomir Vračar, Ninoslav Stojadinović, Branimir Acković, Srđan Jovanović, “Computer Controlled Equipment for Laboratory Exercises in Physics and Electronics”, Proc. EUROCON 2003 Ljubljana, Slovenia, pp.134-137, (2003).
  
  
  • Ljubomir Vračar, Biljana M. Pešić, Ninoslav Stojadinović, “Computer as Powerful Tool in Reliability Testing of Thin Gate Dielectrics in MOS Devices”, Proc. EUROCON 2005, Beograd, pp. 1159-1162, (2005).
  
  
  • V. Paunović, M. Miljković, Lj. Vračar, Lj. Živković, “Microstructure and dielectric properties of Dy doped BaTiO₃ ceramics, Proc.of 3rd Serbian Congress of microscopy, 3SCM 2007, pp.117-118, (2007).
  
  
  • Z. Petrušić, I. Jovanović, Lj. Vračar, D. Mančić, M. Blagojević, “A wirelles solution of measurement-control system for photovoltaic aplication”, Proc. UNITECH, 10th Anniversary International Scientific Conference, Gabrovo, Bulgaria, pp. 114-122, (2010).
  
  
  • Z.Petrušić, U.Jovanović, Lj.Vračar, D. Mančić, “Wireless Sensor System for Measuring Parameters of UV Radiation”, Proceeding of Papers ICEST, Vol 1, pp.225-228 (2011)
  
  
  • Marjan Blagojević, Ljubomir Vračar, “Magnetic Field Dosimeter”, RAD The First International Conference on Radiation and Dosimetry in Various Fields of Research, Niš, Serbia, April 25-27, (2012)
  
  
  • Ljubomir Vračar, Aneta Prijić, Zoran Prijić, ”Glass-Touch Keyboard for Outdoor Applications Based on Capacitive Sensors“, Proc. 12th International Conference on Applied Electromagnetics (PES2015), pp. P1.8.1-P1.8.4 Niš, Serbia, Aug. 31 – Sep. 2, 2015, ISBN: 978-86-6125-145-0.
  
  
  • Aneta Prijić, Miloš Marjanović, Ljubomir Vračar, Danijel Danković, Dejan Milić, and Zoran Prijić, “A Steady-State SPICE Modeling of the Thermoelectric Wireless Sensor Network Node”, ETRAN 2017
  
  
  • Jana Vračar, Miloš Marjanović, Aleksandra Stojković, Zoran Prijić, Aneta Prijić, Ljubomir Vračar, “Application of a Low-Voltage Step-Up Circuit for Thermal Energy Harvesting Under Natural Convection”, Proceedings of papers IcETRAN 2019, 6th International Conference on Electrical, Electronic and Computing Engineering, Srebrno Jezero, 2019, pp. 564-569, ISBN 978-86-7466-785-9
  
  
  • Milan Stojanović, Nikola Mitrović, Ljubomir Vračar, Danijel Danković, “Design and realization of solar cell monitoring system”, Proceedings of the 7th Student conference “Energy Efficiency and Susainable Development“ (SCEESD), Skopje (North Macedonia), Skoplje, Makedonija, October 2019, pp. 102-107, ISBN: 978-9989-630-92-7
  
  
  • Milan Stojanović, Jana Vračar, Ljubomir Vračar, “Different Ways to Charging Supercapacitor in WSN Using Solar Cells”, Proceedings of papers of the 7th IcETRAN, Niš (Serbia), 28-29 September 2020, pp. 486-489, ISBN: 978-86-7466-852-8
    
    
    
    • Milan Stojanović, Jana Vračar, Ilija Neden Dimtriu, Ljubomir Vračar, “Simulation of the Earth’s Magnetic Field Distortion Induced by a Vehicle”, Proceedings 32th International Conference on Microelectronics (MIEL 2021), Niš (Serbia), 12-14 September 2021, pp. 293-296, ISBN 978-1-6654-4526-9, DOI: 10.1109/MIEL52794.2021.9569087.
    
    
    • Milan Stojanović, Jana Vračar, Ilija Neden Dimtriu, Ljubomir Vračar, “Magnetic Field Generator For Simulation of a Vehicle Movement For a Wide Range of Velocities”, Proceedings of papers of the 8th IcETRAN, Ethno village Stanišići (B&H), 08-10 September 2021, pp. 346-50, ISBN: 978-86-7466-894-8.
    
    
    
    
  
  
  • Jana Vračar, Milan Stojanović, Zoran Prijić, Aneta Prijić, Ljubomir Vračar, “Design Consideration for Low-Power Step-Up Converter”, Proceedings of papers IcETRAN 2022, 9th International Conference on Electrical, Electronic and Computing Engineering, Novi Pazar, 2022, pp. 414-417, ISBN 978-86-7466-930-3
  
  
• Radovi na domaćim naučnim skupovima:

  • Jana Vračar, Aneta Prijić, Ljubomir Vračar, “Prototip učila za demonstraciju rada punotalasnog ispravljača”,  Zbornik 61. Konferencije za elektroniku, telekomunikacije, računarstvo, automatiku i nuklearnu tehniku, ETRAN 2017, Kladovo, 05. do 08. juna 2017, pp. MO2.3.1-6, ISBN 978-86-7466-692-0

  
  

  • Lj .Živković, B. D. Stojanović, C. R. Foschini, V. Paunović, Lj. Vračar, ”Effect of powder preparation on microstructure and dielectric properties of PLZT ceramics” YUCOMAT’2001, Herceg-Novi, Yugoslavia, p. 32 (2001).
  • Lj. Živković, S. Bošković, M. Miljković, V. Paunović, Lj.Vračar, ”Electrical characterization of Si3N4-TiN ceramics”, YUCOMAT’2001, Herceg-Novi, Yugoslavia, p. 84 (2001).
  • M. Pecovska-Đorđević, N. Novkovski, B. Pešić, Lj. Vračar, N. Stojadinović, “Change of I-V and C-V Characteristics in Thin SiO2 Films After High-Field Stress”, Četvrta Konferencija na Društvoto na fizičarite na Republika Makedonija, Ohrid, Oktomvri, (2002).
  • Lj. Zivković, V. Paunović, Lj. Vračar, M. Miljkovic, ''SEM study of ferroelectric domains in modified BaTiO3 ceramics’’, Book of abstracts YUCOMAT’2003, Herceg-Novi, p.88 (2003).
  • V.Mitić, V.Paunović, Lj. Vračar and Lj. Zivković, “MnCO3 and CaZrO3 additive effects on electrical properties of BaTiO3 ceramics’’ ICAM 2003, Japan, p.169 (2003).
  • Lj. M. Zivković, V. V. Mitić, V. V. Paunović, Lj. Vračar, B. D. Stojanović, “The synergistic effects of Nb/Mn and Sb/Mn on the microstructural and electrical characteristics of BaTiO3 based ceramics”, Book of abstracts 106th Annual Meeting & Exposition ACERS , Indiana, USA, pp. 204-206 (2004).
  • V.Mitić, Lj. Zivković, V.Paunović, Lj. Vračar, M. Miljković, “Microstructural evolution and ferroelectric domains in Nb2O5 and CaZrO3 doped BaTiO3” 106th Annual Meeting & Exposition ACERS, USA, pp. 191-192 (2004).
  • Lj. M. Zivković, V. V. Mitić, V. V. Paunović, Lj. Vračar, N. Stamenkov, “Dielectric properties and phase transition in Sb/Mn and La/Mn co-doped BaTiO3 ceramics”, Book of abstracts 107th Annual Meeting & Exposition ACERS Baltimore, USA, p. 170 (2005).
  • Lj. M. Zivković, Lj. M. Vračar, V. V. Paunović, M. S. Miljković, “Characterization of La/Mn and Sb/Mn codoped BaTiO3 ceramics by SEM and EDS spectroscopy”, EMAS 2006, 7th Regional Workshop on Electron Probe Microanalysis Today: Practical Aspects, Karlsruhe, Germany (2006).
  • V. Paunović, M. Miljković, Lj. M. Vračar, Lj. M. Živković, “The influence of rare-earth additives (La, Dy and Sm) on the microstructure and dielectric properties of doped BaTiO3 ceramics, Book of abstracts YUCOMAT’2006, Herceg-Novi, p.29 (2006).
  • Lj. Vračar, V. Paunović, M. Miljković and Lj. Živković, ”EDS Characterization and Dielectric Properties of Barium Titanate doped with Rare-Earth Additives (La, Dy and Sm) ”, Proc. of EMAS 2007, 10th European Workshop on Modern Developments and Applications in Microbeam Analysis, Antwerpen, Belgium, p.311 (2007).

  
  

   

• Patenti:

  • „Tastatura od programibilnih tastera i postupak za dodeljivanje identifikacione oznake tasterima“, prvi pronalazač Ljubomir Vračar, upisan u registar patenata Zavoda za intelektualnu svojinu pod rednim brojem 52967, 28.11.2013, RS52967B
  • „Kapacitivni senzor pritiska sa višeslojnim dielektrikom“, prvi pronalazač Ljubomir Vračar, upisan u registar patenata Zavoda za intelektualnu svojinu pod rednim brojem 52973, 29.11.2013, RS52973B
  • „Taster izrađen u tehnologiji štampanih ploča“, prvi pronalazač Ljubomir Vračar, upisan u registar patenata Zavoda za intelektualnu svojinu pod rednim brojem 529974, 29.11.2013, RS52974B
  • “Termoelektrični samonapajajući uređaj baziran na tehnologiji metalnih štampanih ploča”, upisan u registar patenata Zavoda za intelektualnu svojinu pod rednim brojem 55393, 16.3.2017, RS55393B1
  • “A NEW METHOD FOR CONSTRUCTION OF ROBUST SWITCHING DEVICES BASED ON THE PRINTED CIRCUIT BOARD TECHNOLOGY”, WO2012091594A2 (A3) • 2012-07-05 • ,VRACAR LJUBOMIR [RS], Earliest priority: 2010-12-28 • Earliest publication: 2011-10-31

• Tehnička rešenja:

  • Lj.Vračar, „Senzor dodira GlassTouch“, tehničko rešenje-novi proizvod – M81, godina realizacije 2012.

  
  

  • Dr Ljubomir Vračar, „Pilon sa ugrađenim WEB serverom“, tehničko rešenje-novi proizvod – M81, godina realizacije 2013-2015.

  
  

  • Dr Miloš Milovančević, docent, dr Ljubomir Vračar, asistent, dr Boban Andjelković, van.prof., dr Dragan Milčić, van.prof., dr Jelena Stefanović Marinović, van.prof., Miodrag Milčić, asistent, “Embedded dijagnostički sistem zasnovan na bluetooth tehnologiji u Android okruženju”, tehničko rešenje-novi proizvod – M81, godina realizacije 2015.

  
  

  • Dr Miloš Milovančević, docent, dr Ljubomir Vračar, asistent, dr Boban Andjelković, van.prof., dr Dragan Milčić, van.prof., dr Jelena Stefanović Marinović, van.prof., Miodrag Milčić, asistent, “Mikrokontrolerski integrisani dijagnostički sistem”, tehničko rešenje-novi proizvod – M81, godina realizacije 2015.

  
  

  • Ljubomir Vračar, “Akvizicioni sistem SmartLab”, tehničko rešenje-novi proizvod – M81, godina realizacije 2017.

  
  

  • Z. Prijić, A. Prijić, D. Pantić, S. Ristić, N. Janković, Lj. Vračar, „Industrijski prototip M2M terminala za upravljanje industrijskim procesima“, industrijski prototip, Elektronski fakultet u Nišu, „Ei-PCB Factory“ Niš, Niš, 2009 - rezultat projekta MNTR Republike Srbije – TR11018.

  
  

  • Lj.Vračar, A.Prijić, D.Vučković, Z.Prijić, „Taster za industrijske primene izrađen u tehnologiji štampanih ploča“, tehničko rešenje-industrijski prototip – M82, (2011).

  
  

  • Z. Prijić, A. Prijić, D. Pantić, S. Ristić, N. Janković, Lj. Vračar, „Prototip štampane ploče GCM-01“, prototip, Elektronski fakultet u Nišu, „Ei-PCB Factory“ Niš, Niš, 2008 - rezultat projekta MNTR Republike Srbije – TR11018.

  
  

  • Z. Prijić, A. Prijić, D. Pantić, S. Ristić, N. Janković, Lj. Vračar, „Prototip štampane ploče GCM-02“, prototip, Elektronski fakultet u Nišu, „Ei-PCB Factory“ Niš, Niš, 2008 - rezultat projekta MNTR Republike Srbije – TR11018.

  
  

  • Z. Petrušić, D. Mančić, D. Jovanović, M. Radmanović, G. Stančić, Ljubomir Vračar, D. Radenković, „Bežični UV merni sistem“, laboratorijski prototip, Elektronski fakultet u Nišu, Fakultet zaštite na radu u Nišu, Niš, 2010- rezultat projekta MNTR Republike Srbije – TR21036.

  
  

  • Lj.Vračar, A.Prijić, D.Vučković, Z.Prijić, „Samonapajajući termoelektrični čvor bežične senzorske mreže izrađen u tehnologiji aluminijumskih štampanih ploča“, tehničko rešenje-laboratorijski prototip – M85, 2011.

  
  

  • Lj.Vračar, D.Nešić, S.Dević, A.Prijić, Z.Prijić, „Samonapajajući fotonaponski čvorbežične senzorske mreže“, tehničko rešenje-prototip – M85, 2012.

  
  

  • Danijel Danković, Aneta Prijić, Ivica Manić, Ljubomir Vračar, Zoran Prijić, Ninoslav Stojadinović, “Nova metoda za ispitivanje nestabilnosti usled naponsko temperaturnih naprezanja VDMOS tranzistora snage”, Priznato tehničko rešenje spada u kategoriju: nova metoda, softver (M85, 2012). Nastavno-naučno veće Elektronskog fakulteta u Nišu, Broj 17/10-010/13-001 od 17.01.2013.