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Dr. DJORDJEVICH, Alexandar

BSc-MechE(Belgrade), MSc-MechE(Belgrade), PhD(NewBrunswick), PEng(Canada)

Associate Professor

Contact Information

Office: ACAD-Y6617
Phone: +(852)-3442-7776
Email: mealex@cityu.edu.hk

Research Interests

  • Mechatronics
  • Applications of Optical and Nuclear Physics

Honours/Awards

  • Teaching Excellence Award
    (City University of Hong Kong)

EDUCATION

PhD, Radiology/Mechanical Engineering, University of New Brunswick (1989)
Area: Radiotherapy of patients with cancer

MSc, Mechanical Engineering, University of Belgrade
Area: control systems, parametric system-design methods

BSc, Mechanical Engineering, University of Belgrade
Area: control for hydro-turbines


EMPLOYMENT

1992-... Associate Professor (since 1998), City University of Hong Kong, Department of Manufacturing Engineering and Engineering Management.
Won the university's Teaching Excellence Award.

1991-92 Project Engineer, Atlantic Nuclear Services Ltd, Fredericton, New Brunswick (Canada).
Responsible for entire projects from bidding to conclusion. Projects included:
  • seismic analysis of nuclear piping,
  • pressure-activated liquid-injection reactor-shutdown system, modelling and analysis;
  • "Smart Bone" prototype with optical fibre sensors imbedded in composites.
1989-91 Design Engineer, Engineering Services Department, Research and Productivity Council of New Brunswick, Fredericton, New Brunswick.
Stress, heat transfer and vibration analyses, reverse engineering of parts and structures, and conceptual and detail design of machinery: 3-axes robot de-wirer of pulp bales, potato chips line, trailer for nuclear waste, special purpose railway car,... For Canadian Space Agency, conceptualised "Smart Bone" prototype. Developed a finite element pre-processor which enabled 3-D surfaces containing irregularities (holes or protrusions) to be meshed in 2-D and transformed to their desired shape with no element distortion.

1988-89 Lecturer, University of New Brunswick, Department of Mechanical Engineering (Canada): two appointments in two consecutive years while on leave from PhD-study.

1985-86 Engineer, Department of Robotics, Institute M.Pupin, Belgrade.
Robot and aircraft dynamics. Modelled the dynamic interaction between an aircraft landing gear and its connecting surface - implemented in a flight simulation trainer.

1982-85 Engineer, Dept. of Electro-optics, (military) Technical Experimenting Centre, Belgrade. Performance examination of prototypes and models of targeting and viewing systems: image amplifiers, lasers, laser range-finders, classical optic devices, integrated day-night vision systems with built-in rangefinder and automatic position-data transmission.

PROFESSIONAL MEMBERSHIP

  • Hong Kong Institution of Engineers (2002)
  • Association of Professional Engineers of New Brunswick, Canada (1993)
  • Yugoslav Association of Engineers (1986)
  • International Institution of Engineers (2000)
  • The Optical Society of America (2000)

TEACHING

  • Received the University's "Teaching Excellence Award".
    (usually four awards are made annually for the university with almost 1,000 academic staff).
  • Served on the University's selection panel for Teaching Excellence Awards, 2006.
  • The only staff in the Faculty of Science and Engineering whose teaching-performance was assessed by numerous (over 40) peers from many departments during the "Teaching Experience Sharing" session - only positive feedback was provided.
  • Three journal publications on teaching and education (two are in the International Journal of Engineering Education with the SCI Impact Factor > 0.35).
  • Programme Leader, Bachelor of Engineering in Mechatronic Engineering (includes curriculum planning and the recent OBTL-related programme restructuring).
  • My students won local and international prizes, including the certificate of excellence in the international WorldSkills mechatronics competition.

RESEARCH, INDLUCING APPLIED RESEARCH

  • Two patents
  • Selected 30 publications are in journals with the average JCR Impact Factor exceeding 1.5.
  • 85 citations by others (excluding self-citations).
  • Received credit in the literature for having given one of only two major methods for precision radiotherapy with intensity-modulated radiation beams (for patients with cancer).
  • Results of my radiotherapy research have been implemented in a commercial system (Theraplan 300L by Theratronics International Ltd).
  • Have pioneered the concept of structural deflection-curvature. It has four advantages over the long-established practice of strain measurement.
  • Have contributed a sensor of deflection-curvature, the only device sensitive to minute curvatures with radii of over kilometer (which is the range found in structures deflected by mechanical loading). Featured in a trade publication Laser Focus World. A research group in China is continuing the development of this sensor.
  • Developed for NEC (HK) Ltd. an automated passenger control gate for border crossings. It provides the identity extraction and biometric verification for passengers. It features a microprocessor-control for the gate motion, has numerous safety provisions, and discriminates between a passenger's luggage versus an accompanying second person evading the security screening by tailgating the first passenger. Developed a similar facility for vehicular border crossings, which has been adopted and installed in its revised version. Had follow-on projects with the same client.
  • As Expert Witness in a $10,000,000 High Court case involving a Hong Kong manufacturer's action against a foreign buyer, have discovered a crucial piece of evidence - a letter of appreciation on file.
  • Successful supervision of two PhD students (in addition to MPhil and MEng students).
  • Held five Competitive Earmarked Research Grants (as PI), one grant by the Innovation and Technology Fund (as PI for CityU), one contract research grant (PI), and consultancies.

EXTERNAL APPOINTMENTS

  • Editorial Advisory Board Member, International Journal of Advanced Robotic Systems.
  • Co-chair, IAENG Society of Mechanical Engineering, 2006/2007.
  • External Adviser for "Mechatronics", Open University of Hong Kong.
  • External PhD Thesis Examiner, Hong Kong Polytechnic University.
  • External MPhil Thesis Examiner, Chinese University of Hong Kong.
  • External Adviser for a design course, Open University of Hong Kong (since 2005).
  • Organising Committee Member, three years in a row, the annual Hong Kong Youth Technology Design Competition: "Creative Design of Assistive Products for the Elderly".
  • Selection Panel Member, Sir Edward Youde Memorial Fellowships and Scholarships (2003).
  • Judging Panel Member, IEE Hong Kong Young Members Contest (2003).
  • Organising Committee Member, "Robo-ball" competition of high schools held as part of the Innovation Expo (2001) in HK Convention Centre (generated great media attention). Guided teams from the CityU region, and organised a regional competition at CityU. One of the schools I coached became the HK finalist, and another a semi-finalist.
  • Frequent reviewer of journal manuscripts (e.g. Sensors&Actuators, Applied Optics, IEEE T. I&M, Optics Letters, IMechI J. of Eng. in Medicine, Int.J.Eng.Education, Optics Express)

CONFERENCE ORGANIZATION

  • Organising Committee, 15th International Conference on Mechatronics and Machine Vision in Practice, Massey University, Auckland, New Zealand, 2 - 4 December 2008.
  • Program Committee, the 11th Mechatronics Forum Biennial International Conference, "Mechatronics 2008", University of Limerick, Castletroy, Limerick, Ireland.
  • IMECS 2006 workshop committee member.
  • International Scientific Committee Member, 2nd WSEAS International Conference on NON-LINEAR ANALYSIS, NON-LINEAR SYSTEMS and CHAOS (WSEAS NOLASC 2003), Vouliagmeni, Athens, Greece, December 29-31, 2003.
  • Joint Scientific Committee Member, WSEAS multi-conference, Miami, April 21-23, 2004.
  • International Scientific Committee Member, 7th WSEAS International Conference on Systems, Corfu Island, Greece, July 7-10, 2003.
  • International Programme Committee Member, 8th IEEE International Conference on Mechatronics and Machine Vision in Practice, 2001 (27-29 August 2001).
  • Organising Committee Member, The Ninth International Manufacturing Conference in China, 2000 (16-17 August 2000, Hong Kong).
  • Secretary, CIRP Working Group on Modelling of Machining Operations (Jan. 1997, Paris).
  • Co-editor, Proceedings of CIRP, "International Symposium on Advanced Design and Manufacture in the Global Manufacturing Ara", 1997 (detail language and style editing of half of all the papers by non-native English speakers, mainly Chinese, 21-22 Aug 1997, HK). Session chairmanship (an incomplete list):
  • International Manufacturing Conference in China (16-17 August 2000) Session on: Advanced materials processing, and also Session on: Product and process design.
  • CIRP symposium "Advanced Design and Manufacture in the Global Manufacturing Era", session "An Integrated Reverse Engineering Approach to Reconstruct CAD-Compatible Free-Form Surface Models for Rapid Prototype Manufacturing" (Session FE2AMT), 1997.
  • Robotics session of the 11th ISPE/IEEE/IFAC International Conference on CAD/CAM, Robotics & Factories of the Future CARS&FOF'95.

ADMINISTRATIVE CONTRIBUTIONS

  • Programme Leader, Bachelor of Engineering in Mechatronic Engineering.
  • Member, Departmental Executive Committee (2006-2009).
  • Faculty Member, CityU's Constructive Alignment Working Group (2004/5).
  • Twice elected member of the MEEM Research Consultative Forum.
  • Member, MEEM Research Committee.
  • Member, FSE Research Committee
  • Panel Chair and frequently Examiner, for CityU PhD and MPhil theses examinations.

SELECTED PUBLICATIONS SINCE 2000

  • S Savovic and A Djordjevich, Influence of initial dopant distribution in fiber core on refractive index distribution of thermally expanded core fibers, OPTICAL MATERIALS, In Press.
  • MS Kovacevic, A Djordjevich and D Nikezic, Analytical optimization of optical fiber curvature gauges, IEEE SENSORS JOURNAL, Volume: 8 Issue 3 Pages 227-232 Published: Mar 2008.
  • S Savovic and A Djordjevich, Numerical solution of diffusion equation describing the flow of radon through concrete, APPLIED RADIATION AND ISOTOPES, Volume: 66 Issue 4 Pages 552-555 Published: 2008.
  • A Djordjevich, Influence of bending on power distribution in step-index plastic optical fibers and the calculation of bending loss, APPLIED OPTICS, Volume: 46 Issue: 22 Pages: 4867-4868 Published: Aug 2007.
  • S Savovic and A Djordjevich, Method for calculating the coupling coefficient in step-index optical fibers, APPLIED OPTICS Volume: 46 Issue: 9 Pages: 1477-1481 Published: Mar 2007.
  • MS Kovacevic, A Djordjevich and D Nikezic, Effects of end-face tilt angle on numerical aperture for straight and bent plastic optical fibers, FIBER AND INTEGRATED OPTICS, Volume: 26 Issue: 2 Pages: 111-122 Published: 2007.
  • S Savovic and A Djordjevich, Mode coupling in strained and unstrained step-index plastic optical fibers, APPLIED OPTICS, Volume: 45 Issue: 26 Pages: 6775-6780 Published: Sep 2006.
  • V Babovic, M Kovacevic and A Djordjevich, Numerical investigations of guided plasma waves beyond the quasistatic limits, WAVE MOTION, Volume: 43 Issue: 6 Pages: 499-507 Published: Jun 2006.
  • M Kovacevic and A Djordjevich, A mechanical analogy for the photoelectric effect, THE PHYSICS TEACHER, Volume: 41 Issue: 66 Pages: 551-555 Published 2006.
  • Z Todorovic, S Savovic, A Djordjevich and M Tanasijevic, Production of heavy fragments in the fission mass region in C-12+U, Bi, Au and Ag reactions at 26.5 GeV, RADIATION MEASUREMENTS, Volume: 40 Issue: 2-6 Pages: 470-474 Published: Nov 2005.
  • S Savovic and A Djordjevich, Designing graded-index plastic optical fibers from two-step-core fibers by thermal diffusion of dopants, OPTICAL ENGINEERING, Volume: 44 Issue: 9 Article Number: 095003 Published: Sep 2005.
  • MS Kovacevic, D Nikezic and A Djordjevich, Modeling of the loss and mode coupling due to an irregular core-cladding interface in step-index plastic optical fibers, APPLIED OPTICS, Volume: 44 Issue: 19 Pages: 3898-3903 Published: Jul 2005.
  • A Djordjevich, Distributed Fiberoptic Ice Detector, Canadian Patent Number 2,244,086, 2005.
  • S Savovic and A Djordjevich, Influence of numerical aperture on mode coupling in step-index plastic optical fibers, APPLIED OPTICS, Volume: 43 Issue: 29 Pages: 5542-5546 Published: Oct 2004.
  • M Kovacevic, D Nikezic and A Djordjevich, Monte Carlo simulation of curvature gauges by ray tracing, MEASUREMENT SCIENCE & TECHNOLOGY, Volume: 15 Issue: 9 Pages: 1756-1761 Published: Sep 2004.
  • N Stevanovic, D Nikezic and A Djordjevich, The recoil factor of Pb-214, JOURNAL OF AEROSOL SCIENCE, Volume: 35 Issue: 8 Pages: 1041-1050 Published: Aug 2004.
  • A Djordjevich and S Savovic, Numerical solution of the power flow equation in step-index plastic optical fibers, JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, Volume: 21 Issue: 8 Pages: 1437-1442 Published: Aug 2004.
  • A Djordjevich and PK Venuvinod, Integrating mechatronics in manufacturing and related engineering curricula, INTERNATIONAL JOURNAL OF ENGINEERING EDUCATION, Volume: 19 Issue: 4 Pages: 544-549 Published: 2003.
  • A Djordjevich, Motion control demonstration for easy student understanding, INTERNATIONAL JOURNAL OF ENGINEERING EDUCATION, Volume: 19 Issue: 4 Pages: 610-614 Published: 2003.
  • Z Todorovic, A Djordjevich and S Savovic, Measurement of cross sections of heavy fragments formed in the interaction of 0.65-12.7 (GeVHe)-He-4 with Bi-209, ACTA PHYSICA POLONICA B, Volume: 34 Issue: 8 Pages: 4205-4217 Published: Aug 2003.
  • A Djordjevich, Alternative to strain measurement, OPTICAL ENGINEERING, Volume: 42 Issue: 7 Pages: 1888-1892 Published: Jul 2003.
  • A Djordjevich, Structural deflection measurement, JOURNAL OF STRAIN ANALYSIS FOR ENGINEERING DESIGN, Volume: 38 Issue: 1 Pages: 37-44 Published: Jan 2003.
  • S Savovic and A Djordjevich, Optical power flow in plastic-clad silica fibers, APPLIED OPTICS, Volume: 41 Issue: 36 Pages: 7588-7591 Published: Dec 2002.
  • S Savovic and A Djordjevich, Solution of mode coupling in step-index optical fibers by the Fokker-Planck equation and the Langevin equation, Source: APPLIED OPTICS Volume: 41 Issue: 15 Pages: 2826-2830 Published: May 2002.
  • A Djordjevich, M Fung and RYK Fung, Principles of deflection-curvature measurement, MEASUREMENT SCIENCE & TECHNOLOGY, Volume: 12 Issue: 11 Pages: 1983-1989 Published: Nov 2001.
  • A Djordjevich, SK Tso and J Zhang, Extended range tactility in material handling, INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH, Volume: 38 Issue: 17 Pages: 4357-4367 Published: Nov 2000.
  • A Djordjevich and S Savovic, Investigation of mode coupling in step index plastic optical fibers using the power flow equation, Source: IEEE PHOTONICS TECHNOLOGY LETTERS, Volume: 12 Issue: 11 Pages: 1489-1491 Published: Nov 2000.
  • XL Li, A Djordjevich and PK Venuvinod, Current-sensor-based feed cutting force intelligent estimation and tool wear condition monitoring, IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, Volume: 47 Issue: 3 Pages: 697-702 Published: Jun 2000.

Books/Chapters/Patents

  • S Savovic and A Djordjevich, Mode coupling in step index optical fibers, Research Monograph, Faculty of Science, Kragujevac, Jan 2008, ISBN 978-86-81829-88-2, 102 pages.
  • SK Tso, A Djordjevich and BL Luk, CIDAM Robots, in Advanced Robotic Systems, 2005, invited by the Editor-in-Chief of the International Journal of Advanced Robotic Systems.
  • D Debeljkovic and A Djordjevich, Parameter Plane Analysis and Synthesis of Distributed-Parameter Processes and Time-Delayed Systems, Cigoja Press, 2005, ISBN 86-7558-260-9, 488 pages.
  • Djordjevich A, Fiberoptic Ice Detector, Canadian Patent number 2,048,991, Canadian Intellectual Property Office.
  • Djordjevich A, Distributed Fiberoptic Ice Detector, Canadian Patent 2,244,086, Nov. 2005.