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David J JEFFERIES

University of Surrey
School of Electronics and Physical Sciences,
Electronic and Electrical Engineering
Microwave and Systems Research Group
Senior Lecturer     Appointed: 1983
Mailing Address
Advanced Technology Institute
School of Electronics and Physical Sciences,
University of Surrey
Guildford, Surrey GU2 7XH
United Kingdom
Contact Information
+44 1483689295
01483 534139
D.Jefferies@surrey.ac.uk
http://www.ee.surrey.ac.uk/Personal/D.Jefferies/
Qualifications
Ph.D., Stanford University, 1979
M.A., University of Oxford, 1973
M.S., Stanford University, 1968
B.A., University of Oxford, 1965
Expertise and Research Interests
Microwave engineering
Microwave acoustics
Antenna engineering
Analogue circuit engineering
Low temperature experimental techniques
Neutron scattering
X ray scattering
Telecommunications
Teaching lab experiment design
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Complexity
Electronic chaos
Acoustic chaos

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Engineering and Physical Sciences mathematics
Nesting habits of Parus Caeruleus
Classical Western music
Industrial Relevance
Many and various.
Keywords
COS Keywords: Electrical Engineering or Electronics
Additional Terms: Agent based models; Antennas; Applied Complexity; Arbiters; Asynchronism; Bipolar Junction Transistor Model; Chaos; Chaotic Behaviour; Chaotic Dc-Dc Converter; Chaotic Dynamics; Clocked Autonomous Digital Systems; Complex systems; Computer Data Networks; Converter; Data Transfer; Dc-Dc Converters; Deterministic Model; Discrete System; Electronic Systems; Electronics; Emergent structures; Ferroelectrics; Image transformations; Intermittent; Limits to simulation; Local Area Networks; Mathematics; Metastability; Modelling; Networks; Non-Linear Dynamics; Non-Linearity; Nonlinear; Nonlinear Phenomena; Parallel Computer; Periodic; Piecewise Linear; Piecewise-Linear Diode; Piecewise-Linear Model; Power; Power Converter; Reliability; Reverse Recovery; Review Article; Rf Amplifier; Self-Similarity; Spectral Peaks; Spectral Peaks, Chaotic Dc-Dc Converter; Statistics; Subharmonic; Switch-Mode; Traffic Flow; Transient Behaviour; Traps
Languages
Scale: 1 (basic) to 3 (fluent)
Reading, Writing, Speaking:
French : (2, 1, 1)
Memberships
Audio Engineering Society (New York, USA) [since 1965]
Institute of Physics (UK) [since 1965]
Institution of Electrical Engineers (UK) [since 1986]
Sigma Xi (USA) [since 1969]
Honors and Awards
1962-1965, Open Scholar, St Catherine's College, Oxford, Physics
Previous Positions
1979-1983, University of Oxford, Lecturer
1976-1979, University of Nottingham, Fellow
1973-1975, University of Aberdeen, Research Assistant
1965-1969, Stanford University (USA), Research Assistant
Funding Received
Three UK SRC/SERC research grants into chaotic behaviour of electromechanical and electronic systems, from 1980 to 1992
Materials research (RAM)
Defence Research Agency
Value: 27036
Start Date: not given
Finish Date: not given
Duration: 24 months
(Co-investigator, 2 other team members)
The study of chaotic flow in bridged local area network architectures
Engineering and Physical Sciences Research Council (EPSRC)
Value: 89256
Start Date: 19920401
Finish Date: 19940930
Duration: 30 months
(Co-investigator, 1 other team member)
Synchronisation and control of chaotic systems
INTAS
Value: 1763
Start Date: 19950601
Duration: not_given
(Joint investigator)
Measures of Complexity
DERA (Defence research agency)
Value: not stated
Start date: 1997
Finish date: not given
Duration: not given
(Investigator, 2 other team members)
Publications
  • Jefferies, DJ. High-field ohmic contacts to semiconducting Strontium Titanate single crystals. J Appl Phys, vol47 1976 pp 776-779
  • Challis, LJ; Ghazi, AA; Jefferies, DJ; Wybourne, MN. Investigation of V3+ pairs in aluminium oxide by phonon frequency-crossing spectroscopy. Phys Rev Letts. 1978 vol 40 pp 519-522
  • Challis, LJ; Fletcher, JR; Jefferies, DJ; Sheard, FW; Toombs, GA; de Goer, AM; Hutchings, MT. Investigation of critically-coupled spin phonon modes in chromium doped MgO. Phys Rev B 1979 vol 19 pp 296-298
  • Wybourne, MN; Jefferies, DJ; Challis, LJ; Ghazi, AA. Frequency-crossing phonon spectrometer techniques, Rev Sci Instrum. 1979 50 number 12 1634-1639
  • Hindmarsh, MB; Jefferies, DJ. On the motions of the offset impact oscillator, J Phys A, 1984, 17, 1791-1803
  • Usher, Alan; Jefferies, DJ. Quasi thermalisation in a strongly non-linear transmission line. Physics Letters A vol 98 numbers 8,9 1983 November pages 396-398
  • Usher, Alan; Jefferies, DJ. Frequency division using diodes in resonant systems, Phys Letts, 1983, 99A, 356-358
  • Jefferies, DJ. Period multiplication and chaotic behaviour in a driven non-linear piezoelectric resonator, Phys Letts, 1982, 90A, 316-318
  • Jefferies, DJ. Bifurcation to chaos in clocked digital systems containing autonomous timing circuits. Phys Letters A 1986 (March) vol 115 number 3 pp89-92
  • Jefferies, DJ. On the prospects for millimetre-wave analogue phase-locked frequency division via bifurcation to chaos in non-linear systems. Proc European Microwave Conference, Dublin 1986 pp 561-566.
  • Jefferies, DJ. Superconductors in Telecommunications, Technical Communications, 100 High Ave Letchworth Herts August 1988, 90pp, 5 appendices and bibliography.
  • Jefferies DJ, Johnstone GG, Deane JHB. An experimental search for the conditions for the existence of chaotic states in class C bipolar transistor rf amplifiers. International Journal of Electronics, 1991, 71(4), pp661-673
  • Jefferies DJ. Circuit (electricity) - chaos in electric circuits. In:Pake SP ed. Yearbook of Science and Technology . New York: McGraw-Hill, 1991 pp74-76. ISBN 0-07-046707-2
  • Hamill DC, Deane JHB, Jefferies DJ. Modelling of chaotic dc-dc converters by iterated nonlinear mappings. IEEE Transactions on Power Electronics, 1992, PE-7(1), pp25-36
  • Hamill DC, Jefferies DJ. Subharmonics and chaos in a controlled switched-mode power converter. IEEE Transaction on Circuits and Systems, 1988, CAS35(8), pp1059-1061
  • Munck-Fairwood RC, Deane JHB, Jefferies DJ. Chaos in asynchronously clocked communicating digital systems. International Journal of Electronics, 1989, 67(3), pp393-402
  • Jefferies DJ, Deane JHB, Johnstone GG. An introduction to chaos. Electronics and Communication Engineering Journal, 1989, 3, pp115-123
  • Jefferies DJ. - Editor, International Journal of Electronics. London:Taylor & Francis, 1990, pp
  • Jefferies DJ. - Editor, International Journal of Electronics. London, UK:Taylor & Francis, 1991, pp
  • Jefferies DJ. - Editor, International Journal of Electronics. London, UK:Taylor & Francis, 1992, 2400pp
  • Deane JHB; Jefferies DJ. Periodic, intermittent and chaotic states of clocked autonomous digital systems. International Journal of Circuit Theory and Applications, 1990, 18(2), pp175-187
  • Deane JHB; Smythe C; Jefferies DJ. Prospects for chaotic behaviour in networks. 10th UK Teletraffic Symposium, Ipswich, UK, Apr 1993
  • Deane JHB, Jefferies DJ, Smythe C. Chaotic traffic flow in local area networks. 11th European Conference on Circuit Theory and Design, Davos, Switzerland, Sep 1993
  • Deane JHB, Smythe C, Jefferies DJ. Prospects for chaotic behaviour in networks. In:None ed. Proceedings of the 10th UK Teletraffic Symposium . Ipswich, UK: University of Ipswich, 1993 pp18/1-18/6
  • Deane JHB, Jefferies DJ, Smythe C. Chaotic traffic flow in local area networks. In:Dedieu J ed. Proceedings of the 11th European Conference on Circuit Theory and Design . Amsterdam, The Netherlands: Elsevier, 1993 pp843-848. ISBN 0-444-81664X
  • Jefferies DJ. - Editor, International Journal of Electronics. London:Taylor & Francis Ltd, 1993, 2500pp
  • Jefferies DJ. - Editor, International Journal of Electronics. London:Taylor & Francis Ltd, 1994, 2500pp
  • Jefferies DJ. Applications of chaos: buzzes, rattles and predictability. Public lecture: Institute of Physics Regional Lecture, Guildford, Surrey, Oct 1993
  • Jefferies DJ. Chaos in electronics - reliably unreliable? IEE Divisional Lecture, Savoy Hill, London., Feb 1994
  • Jefferies DJ; Underhill MJ. Limits to the reliability of asynchronous digital parallel computers. Complex Sytems conference 1994, Rockhampton, Queensland, Australia, Sep 1994. Published online Complexity International volume 2
  • Jefferies DJ; Underhill MJ; Limits to the reliability of asynchronous digital parallel computers. In:Stonier RJ, Yu Xing Huo ed. Proceedings of Complex'94 . Rockhampton, Queensland, Australia: IOS Press, 1994 pp353-360
  • Deane JHB, Jefferies DJ, Smythe C. The dynamics of deterministic data networks. Complex Sytems conference 1994, Rockhampton, Queensland, Australia, Sep 1994. Published online Complexity International volume 2
  • Deane JHB, Jefferies DJ, Smythe C. The dynamics of deterministic data networks. In:Stonier RJ, Yu Xing Huo ed. Proceedings of Complex'94 . Rockhampton, Queensland, Australia: IOS Press, 1994 pp345-352
  • Karadzinov L, Jefferies DJ, Arsov GL, Deane JHB. Simple piecewise-linear diode model for transient behaviour. International Journal of Electronics, 1995, 78(1), pp143-160
  • Jefferies DJ. - Editor, International Journal of Electronics. London, UK:Taylor & Francis Ltd, 1995, 2500pp
  • Jefferies DJ, Deane JHB, Smythe C. Results on the chaotic dynamics and statistics of traffic flows on deterministic models of computer data networks. European Conference on Circuit Theory and Design, Istanbul, Turkey, Aug 1995
  • Jefferies DJ, Deane JHB, Smythe C. Results on the chaotic dynamics and statistics of traffic flows on deterministic. In:Goknar C ed. Proceedings of the European Conference on Circuit Theory and Design . Turkey: ITU, 1995 pp91-94
  • Deane JHB, Smythe C, Jefferies DJ. Self-similarity in a deterministic model of data transfer. International Journal of Electronics, 1996, 80(5), pp677-691
  • Jefferies, DJ. The double potential-well circuit; properties, simulation and construction. IEE-ECS workshop Nonlinear Dynamics of Electronic Systems, Seville, Spain 1996, proceedings pages 327-332
  • Karadzinov LV, Arsov GL, Jefferies DJ, Dzekov TA. Beta-Parameters Charge-Control Piecewise-Linear Bipolar Junction Transistor Model. 7th International Power Electronics & Motion Control Conference., Budapest, Hungary, Sep 1996 pages 161-165.
  • Karadzinov LV, Arsov GL, Dzekov TA, Jefferies DJ. Charge-control Piecewise-Linear Bipolar Junction Transistor Model. IEEE International Symposium on Industrial Electronics, Warsaw, Poland, Jun 1996 pages 561-566.
  • Karadzinov LV, Arsov GL, Jefferies DJ. Alpha-parameters charge-control piecewise-linear BJT model. proceedings Dept of Electrical Engineering, Skopje, 1995, 18(1-2), pp3-11
  • Jefferies, DJ; Crawford, MJ. Traps in chaotic systems. Complex systems conference 1996 Albury-Wodonga, Australia, published online Complexity International volume 3
  • Deane, JHB; Jefferies, DJ. The coupled map chain. Complex systems conference Albury-Wodonga, Australia, published online Complexity International vol 3
  • Jefferies, DJ. Noise traps and snags in electronic systems ECCTD97 conference Budapest 1997 pages 1014-1019
  • Jefferies, DJ. Crisis-induced intermittency circuits. NOLTA conference 1998 Crans-Montana, Switzerland.
  • Deane, JHB; Jefferies, DJ. A succinct representation of the Poincare map for peridically-driven differential equations. Complex Systems conference Sydney 1998. Published online Complexity International volume 6
  • Jefferies, DJ; Deane, JHB. The variable structure system: Intermittency, chaos, and trapping in electronic experiments and simulations. Complex Systems conference 1998 Sydney Australia, published online Complexity International vol 6
  • Deane JHB, Ashwin P, Hamill DC, Jefferies DJ. Calculation of Spectral Peaks in a Chaotic DC-DC Converter. IEE Trans. Circuits & Systems, Part I, 1998, 39, pp1-15
  • Jefferies, DJ; Joon Tae Song. Ferroelectric signal frequency dividers. Japanese Journal of Applied Physics 1999 volume 38 part 1 number 10 pp 5969-5970
  • Deane JHB, Ashwin PB, Hamill DC, Jefferies DJ. Calculation of spectral peaks in a chaotic dc-dc converter. Guildford:University of Surrey, 1998, 16pp. (Technical report in Maths and Stats. Vol 98/09)
  • Deane JHB, Ashwin PB, Hamill DC, Jefferies DJ. Calculation of spectral peaks in a chaotic dc-dc converter. IEEE Trans Circuits and Systems, 1999, 46, pp1313-1319
  • Jefferies, DJ; Deane, JHB. Chaotic itinerancy in a 1-d lattice of harmonic potential wells. NOLTA2000 conference proceedings, Dresden, September 2000 pages 1089-1093.
  • Deane JHB, Jefferies DJ. Chaotic Dynamics and forbidden words. Complex Systems 2000 Conference, Dunedin, New Zealand, Nov 2000. Complexity International online, in preparation.
  • Jefferies DJ, Deane JHB. Emergent approximate fractal structures in cyclic iterating image transformations. Complex Systems 2000 Conference, Dunedin, New Zealand, Nov 2000. Complexity International online, in preparation.
  • Gross, D; Jefferies, DJ; Complexity beyond agent-based modelling. Complex Systems 2000 Conference, Dunedin, New Zealand November 2000. Complexity International online, in preparation.
  • Charalambides, M; Jefferies, DJ; Simulation of spatio-temporal chaos in a one-dimensional Newton's Cradle, as a basis for the development of an agent-based model for impacting mechanical systems. Complex Systems 2002 Conference, Tokyo, September 2002.
  • See also Articles in antenneX on-line antennas magazine 2000-2004

Profile Details
Last Updated: 19th July 2004.

COS Expertise ID #559301
Reference this profile directly: http://myprofile.cos.com/d.jefferies

Individual Expertise profile of David J JEFFERIES, Copyright David J JEFFERIES.
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