Professor Dr. Simon J. Shepherd

Bachelor of Engineering with First Class Honours,
B.Eng(First Class Honours) (Royal Naval College Manadon)
Doctor of Philosophy, Ph.D, (Plymouth),
Doctor of Metaphysics, Ms.D
Chartered Engineer, C.Eng
Chartered Mathematician, C.Math
Chartered Scientist, C.Sci
Member of the London Mathematical Society, MLMS
Fellow of the Institute of Mathematics, FIMA
Senior Member of the Institution of Electrical & Electronic Engineers, SMIEEE
Fellow of the Royal Society of Medicine, FRSM
Fellow of Fisher College, Manadon
Fellow of the Arcadian Society
Imperator of the Invariant Society (founded 1535)
Commissioned Officer in Her Majesty's Navy (Intelligence) (Retd.),
etc, etc

Professor of Computational Mathematics

Outgoing Chair of the University Ethics Committee

Visiting Professor in Advanced Venous Surgery
International Masters Programme
University of Ferrara, Italy

Tel: +44 (0) 1274 234081
Fax: +44 (0) 1274 391521
Email: S.J.Shepherd@bradford.ac.uk



Simon Shepherd was educated at Edgbaston College, Kenilworth School, the Royal Naval Air Engineering School Lee-on-the-Solent, the Britannia Royal Naval College Dartmouth, the Royal Naval Engineering College Manadon, the University of Plymouth and the University of Life.

He served as a Commissioned Officer in Her Majesty's Navy as a weapons and communications specialist where he held a number of appointments ranging from sea-going front line duty in aircraft carriers to "back room" duties in Naval Intelligence. After a succcessful naval career culminating in winning the Bracegirdle Medallion for Outstanding Contributions to Naval Intelligence, he retired in 1987 in the rank of Lieutenant Commander.

He joined British Aerospace plc where he was Senior Systems Engineer in the Special Projects Division in the days when "Black Ops" were still sexy. After the lunatics took over the asylum, he bailed out and became a respectable civilian. He was appointed Lecturer in Cryptography and Computer Security in the University of Bradford in 1993 and elevated directly to a Personal Chair in 2001 with the title of Professor of Computational Mathematics.

Professor Shepherd is a Chartered Engineer, a Chartered Mathematician and was recently one of the first in the UK to be awarded the title of Chartered Scientist in recognition of his contributions across a very wide range of disciplines. He is a Member of the London Mathematical Society, a Senior Member of the Institution of Electronic & Electrical Engineers, a Fellow of the Institute of Mathematics, a Fellow of the Arcadian Society and Imperator of the Invariant Society. He was recently elected a Fellow of the Royal Society of Medicine.

His interests include early music as principal harpsichord of the Bradford Chamber Ensemble, singing with the Bradford Chorale and as Cantoris Countertenor in the Choir of the Cathedral of St. Peter. He has a passion for the music of Ludwig van Beethoven and has recently performed several of the early sonatas. He enjoys fine food and wine and international travel. His hobbies include cooking a wide range of spicy international cuisines and mathematical modelling of the financial markets, where he holds a "very interesting" portfolio returning 40 - 50% year on year.


Research Interests

Medical Biophysics

Bioinformatics and Analysis of the Sequence, Structure and Function of the Genome

Signal Processing and Optimally Efficient Algorithms for Matrix-based Transforms

Cryptography, Signals & Communications Intelligence

Advanced Non-linear Financial Engineering


Recent Grants

Bradford Brain Project, 3,000, MSc funded.

COMET Cancer Assay Prototype, 15,000, Business Venture funded.

The Physics of Clostridium Difficile, 70,000, The David Macdonald Foundation.

Sonic Characterisation of Water Surface Waves, Turbulence, Mixing and Bed Friction in Shallow Water Flows, EPSRC EP/G015341/1, 454,220.

The Effect of Synthetically Generated Hydroxyl Radicals on the Survival of Nosocomial Pathogens in the Air and on Surfaces, NIHR B(09)19, 287,082.


Selected Publications

Research Books

S J SHEPHERD, "CRYPTOGRAPHY : Diffusing the Confusion", Research Studies Press, Baldock, England, ISBN 0 86380 270 2, October 2001.

Patents

S J SHEPHERD et. al., "Improvements in a Digital Processing Apparatus and Method", in the Worldwide Patent Office, Application No. 0225953.9, Registered 7 November 2002, published 15 April 2004.

S J SHEPHERD et. al., "FFT Processor", in the Worldwide Patent Office, Application No. 0708181.3, Registered 27 April 2007, to be published September 2008.

K HOROSHENKOV, S TAIT, S J SHEPHERD et. al., "Methods and Systems for Detection of Liquid Surface Fluctuations", in the Worldwide Patent Office, Application No. P118900GB01/JGR, Registered 3 March 2011.

Internationally Refereed Journal Papers

S J SHEPHERD, P W SANDERS and A PATEL, "A Comprehensive Security System - the Concepts, Agents and Protocols", Journal of Computers and Security, 9 (7), November 1990, 631-643.

S J SHEPHERD, P W SANDERS and C T STOCKEL, "The Quadratic Residue Cipher and some Notes on Implementation", Cryptologia, XVII (3), July 1993, 264-282.

Y O AL-JALILI, S K BARTON and S J SHEPHERD, "Distortion Analysis of the Bulk FFT Structure for Multi-carrier Demodulators", Journal of Signal Processing, 42 (1995), 215-219.

S J SHEPHERD and P W J VAN EETVELT, "On Goats and Jammers", Bulletin of the IMA, 31 (5-6), May 1995, 87-89.

S J SHEPHERD, P W J VAN EETVELT, C W WYATT-MILLINGTON and S K BARTON, "A simple coding scheme to reduce peak factor in QPSK multi-carrier modulation", Electronics Letters, 13 (14), July 1995, 1131-1132.

S J SHEPHERD, "A High Speed Software Implementation of the Data Encryption Standard", Journal of Computers & Security, 14 (4), (1995), 349-357, doi: 10.1016/0167-4048(95)00007-U.

P W J VAN EETVELT, S J SHEPHERD and S K BARTON, "The distribution of peak factor in QPSK multi-carrier modulation", Journal of Wireless Personal Communications, 2 (1/2), November 1995, 87-96.

C W WYATT-MILLINGTON, S J SHEPHERD and S K BARTON, "A pipelined implementation of the Winograd FFT", Journal of Wireless Personal Communications, 2 (4), April 1996, 321-334.

S J SHEPHERD, P W J VAN EETVELT, S K BARTON and I R JOHNSON, "Simulation and Analysis of the Distortion Generated by the Bulk-FFT Demultiplexer", Journal of Signal Processing, 54, (1996), 285-294.

W G CHAMBERS and S J SHEPHERD, "Register locking in mutual clock control cipher keystream generators", Electronics Letters, 33 (12), 5 June 1997, 1020-1021.

S J SHEPHERD, J ORRISS and S K BARTON, "Asymptotic limits in peak envelope power reduction by redundant coding in QPSK multi-carrier modulation", IEEE Transactions on Communications, 46 (1), January 1998, 5-10.

D PATIYOOT and S J SHEPHERD, "Techniques for authentication protocols and key distribution on Wireless ATM networks", ACM Operating Systems Review Journal, 32 (4), October 1998, 25-32.

C TELLAMBURA, M G PARKER, S J SHEPHERD, Y J GUO and S K BARTON, "Optimal sequences for channel estimation using discrete Fourier transform techniques", IEEE Transactions on Communications, 47 (2), February 1999, 230-238.

D PATIYOOT and S J SHEPHERD, "WASS : Wireless ATM Security System", ACM Operating Systems Review Journal, 33 (2), April 1999, 29-35.

D PATIYOOT and S J SHEPHERD, "Cryptographic Security Techniques for Wireless Networks", ACM Operating Systems Review Journal, 33 (2), April 1999, 36-50.

D PATIYOOT and S J SHEPHERD, "Modelling and Evaluation of Security Induced Delays in Wireless ATM Networks", ACM Operating Systems Review Journal, 33 (3), August 1999, 26-31.

D PATIYOOT and S J SHEPHERD, "Security Issues in ATM Networks", ACM Operating Systems Review Journal, 33 (4), October 1999, 22-35.

D PATIYOOT and S J SHEPHERD, "WASS: Security Services for Wireless ATM Networks", ACM Operating Systems Review Journal, 33 (4), October 1999, 36-41.

M G PARKER, A H KEMP and S J SHEPHERD, "Fast Blum-Blum-Shub Sequence Generation using Montgomery Multiplication", IEEE Proceedings on Computers and Digital Techniques, 147 (4), July 2000, 252-260.

N RAO, D YAO and S J SHEPHERD, "Analysis of KMM sequences as spreading codes for A-CDMA systems with RAKE receiver", Acta Electronica Sinica, Invited paper, 28 (7), July 2000, 12-15, (in Mandarin).

J M SIERRA and S J SHEPHERD, "New Phase 1 Exchange Mode for IKE Framework", ACM Operating Systems Review Journal, 34 (4), October 2000, 34-40.

N RAO and S J SHEPHERD, "Analysis of KMM sequences as spreading codes for A-CDMA systems", Journal of Wireless Personal Communications, 16 (3), March 2001, 193-201.

J C MEX-PEREIRA and S J SHEPHERD, "Cryptanalysis of a summation generator with 2 bits of memory", Journal of Signal Processing, 82 (12), December 2002, 2025-2028, doi: 10.1016/S0165-1684(02)00356-0.

S J SHEPHERD, "Why the square root of 163*pi is not quite integer", Mathematics Today, 38 (5), October 2002, 157-158.

J HERNANDEZ and S J SHEPHERD, "On the Eban numbers", Journal of Recreational Mathematics, 31 (3), 2003, 197-200.

S J SHEPHERD, P W J VAN EETVELT, S M R JONES, J M NORAS and H S RAJAMANI, "A Lower Complexity Discrete Fourier Transform", Invited paper by the President of the Institution of Mathematics, Mathematics Today, 39 (5), October 2003, 150-156.

S J SHEPHERD and P W J VAN EETVELT, "Accurate computable approximations to the error function", Mathematics Today, 40 (1), February 2004, 25-27. 40th Anniversary Edition of the Journal.

S J SHEPHERD, "On the volume of n-spheres", Mathematics Today, 40 (6), December 2004, 210-211.

S J SHEPHERD, "Bradford : Building a New Cremona", Invited paper by the Executive Editor. International Journal of Information Management, 25 (5), October 2005, 473-477, ISSN 0068-4012.

C B BEGGS, S J SHEPHERD, C J NOAKES, K G KERR, P A SLEIGH and K BANFIELD, "The Influence of Nurse Cohorting on Hand Hygiene Effectiveness", American Journal of Infection Control, 34 (10), December 2006, 621-626, doi:10.1.1016/j.ajic.2006.06.011.

S J SHEPHERD, "Concepts and Architectures for New Generation Information Search Engines", International Journal of Information Management, 27 (1), February 2007, 3-8, ISSN 0268-4012, doi:10.1016/j.ijinfomgt.2006.06.005.

L A FLETCHER, L F GAUNT, C B BEGGS, S J SHEPHERD, P A SLEIGH, C J NOAKES and K G KERR, "Bacteriocidal Action of Positive and Negative Ions in Air", BMC Journal of Microbiology, 7 (32), 17 April 2007, 1-9, doi:10.1186/1471-2180-7-32.

K G KERR, C B BEGGS, S J SHEPHERD and A M SNELLING, "A multi-disciplinary approach", Public Service Review of Health, 11, April 2007, 30-32, ISSN 1742-2078.

Y ZHOU, J M NORAS and S J SHEPHERD, "Novel design of multiplier-less FFT processors", Journal of Signal Processing, 87 (6), June 2007, 1402-1407, ISSN 0165-1684, doi:10.1016/j.sigpro.2006.12.004.

S J SHEPHERD, "The Tiny Encryption Algorithm", J. Cryptologia, 31 (3), July 2007, 233-245, ISSN 0161-1194, doi:10.1080/01611190601090606.

A D ELBAYOUMY and S J SHEPHERD, "Stream or Block Cipher for Securing Voice over IP?", International Journal of Network Security, 5 (2), September 2007, 128-133, ISSN 1816-353X (print), 1816-3548 (online).

A D ELBAYOUMY and S J SHEPHERD, "A Comprehensive Secure Voice over IP Solution", International Journal of Network Security, 5 (2), September 2007, 233-240, ISSN 1816-353X (print), 1816-3548 (online).

S J SHEPHERD, C B BEGGS and S JONES, "Amino acid partitioning using a Fiedler vector model", European Journal of Biophysics, 37, (1), December 2007, 105-109, doi:10.1007/s00249-007-0182-(y) [for online version].

S J SHEPHERD and C B BEGGS, "A Spider's Web of Infection", Public Service Review of Health, 14, January 2008, 70-72, ISSN 1742-2078.

L A FLETCHER, C J NOAKES, P A SLEIGH C B BEGGS and S J SHEPHERD, "Air Ion Behaviour in Ventilated Rooms", Journal of the Indoor & Built Environment, 17, (2), 2008, 173-182. doi:10.1177/1420326X08089622.

G WANG, N RAO, S J SHEPHERD and C B BEGGS, "Extraction of Desired Signal based on AR Model with Application to Atrial Activity Estimation in Atrial Fibrillation", EURASIP Journal on Advances in Signal Processing, Special Edition on Emerging Machine Learning Techniques in Signal Processing, Vol 2008, (Article ID 728409), 2008, 1-9, doi:10.1155/2008/728409.

C B BEGGS, S J SHEPHERD and K G KERR, "Increasing the frequency of handwashing by healthcare workers does not lead to commensurate reductions in staphylococcal infection in a hospital ward", BMC Infectious Diseases, 8, (113), 2 Sept 2008. BMC Featured Paper for Sept 2008, doi:10.1186/1471-2334-8-114.

S J SHEPHERD, C B BEGGS, K G KERR and L J NEWTON, "A New Tool for the Management of Infection in Patients with Febrile Neutropenia", Journal of Medical Engineering Technology, 33, (1), 2009, 72-78. doi:10.1080/03091900802037502.

C B BEGGS, S J SHEPHERD and K G KERR, "How does healthcare worker handwashing behaviour impact upon the transmission of MRSA between patients? : an analysis using a Monte Carlo model", BMC Infectious Diseases, 9, (64), 15 May 2009, doi:10.1186/1471-2334-9-64.

S J SHEPHERD, C B BEGGS, C F SMITH, K G KERR, C J NOAKES, and P A SLEIGH, "Effect of negative air ions on the potential for bacterial contamination of plastic medical equipment", BMC Infectious Diseases, 10, (92), 12 April 2010, doi:10.1186/1471-2334-10-92.

C B BEGGS, S J SHEPHERD and K G KERR, "Potential for airborne transmission of infection in the waiting areas of healthcare premises: stochastic analysis using a Monte Carlo model", BMC Infectious Diseases, 10, (247), 24 August 2010, doi:10.1186/1471-2334-10-247.

A NICHOLS, K ATTENBOROUGH, S TAHERZADEH and S J SHEPHERD, "An airborne broadband acoustic method to measure the characteristics of a dynamically rough air-water interface", Journal of the Acoustical Society of America, 128, (4), 2327-2327, October 2010.

A M SNELLING, C B BEGGS, K G KERR and S J SHEPHERD, "Spores of C. Difficile in hospital air", Clinical Infectious Diseases, 2010:51, 1 November 2010, 1104.

S J SHEPHERD and C B BEGGS, "Cerebral hydrodynamics are at most a third order system", Medical Hypotheses, 76, (5), 648-652, May 2011, doi:10.1016/j.mehy.2011.01.023.

P ZAMBONI, E MENEGATTI, P CONFORTI, S J SHEPHERD, M TESSARI and C B BEGGS, "Assessment of cerebral venous return by a novel plethysmography method", Journal of Vascular Surgery, 56, (3), 677-685, Sept 2012, (online 21 April 2012, .

C B BEGGS, S J SHEPHERD, M G DWYER, P POLAK, C MAGNANO, C ELLEN, G P POLONI, B WEINSTOCK-GUTTMAN and R ZIVADINOV, "Sensitivity and specificity of SWI venography for detection of cerebral venous alterations in multiple sclerosis", J. Neurological Research, 34, (8), 793-801, Oct 2012, doi:10.1179/1743132812Y, .

V V ZHARKOVA, S J SHEPHERD and S I ZHARKOV, "Principal component analysis of background and sunspot magnetic field variations during solar cycles 21-23", Monthly Notices of the Royal Astronomical Society, 424, (4), 2943-2953, 2012, doi:10.1111/j.1365-2966.2012.21436.x, .

C B BEGGS, S J SHEPHERD and P ZAMBONI, "Cerebral venous outflow resistance and intepretation of cervical plethysmogaphy data with respect to the diagnosis of chronic cerebrospinal venous insufficiency", Journal of Phlebology, Vol ?, (??), 1-9, 2012, doi:10.1258/phleb.2012.012039, .

M ADEKA, S J SHEPHERD and R ABD-ALHAMEED, "Password security awareness in African countries within the context of password security", Journal of Information Security Research, 4, (1), 1-9, March 2013, ISSN 0976-4143 (Print), ISSN 0976-4151 (Online).

A NICHOLS, S J TAIT, K V HOROSHENKOV and S J SHEPHERD, "A non-invasive airborne wave monitor", Journal of Flow Measurement & Instrumentation, 34, 118-126, Oct 2013, doi:10.1016/j.flowmeasinst.2013.09.006.

A NICHOLS, S J TAIT, K V HOROSHENKOV, S J SHEPHERD and Y ZHANG, "Low-cost on-line non-invasive sewer flow monitoring", Journal of Water Practice Technology, 8, (3-4), xxx-yyy, Nov 2013, doi:10.2166/wpt.2013.048.

C B BEGGS, C P CHUNG, N BERGSLAND, P N WANG, S J SHEPHERD, C Y CHENG, M G DWYER, H H HU and R ZIVADINOV, "Jugular venous reflux and brain parenchyma volumes in elderly patients with mild cognitive impairment and Alzheimer's disease", BMC Neurology, 13, 157--, 2013, doi:10.1186/1471-2377-13-157.

C B BEGGS, C MAGNANO, S J SHEPHERD, K MARR, V VALNAROV, D HOJNACKI, N BERGSLAND, P BELOV, S GRISAFI, M G DWYER, E CARL, B WEINSTOCK-GUTTMAN and R ZIVADINOV, "Aqueductal cerebrospinal fluid pulsatility in healthy individuals is affected by impaired cerebral venous outflow", Journal of Magnetic Resonance Imaging, 40, (5), 1215-1222, Nov 2014, doi:10.1002/jmri.24468. .

C P CHUNG, C B BEGGS, P N WANG, N BERGSLAND, S J SHEPHERD, C Y CHENG, D P RAMASAMY, M G DWYER, H H HU and R ZIVADINOV, "Jugular venous reflux and white matter abnormalities in Alzheimer's disease : A pilot study", Journal of Alzheimers Disease, 39, (3), 601-609, 2014, doi:nn-nnnn-nnnn. .

S J SHEPHERD, S I ZHARKOV and V V ZHARKOVA, "Prediction of solar activity from solar background magnetic field variations in solar cycles 21-23", The Astrophysical Journal, 795, (1), xxx-yyy, 13 October 2014, doi:10.1088/0004-637X/795/1/46, Impact Factor 6.345.

T T MAPOKA, Y A S DAMA, H M ALSABBAGH, S J SHEPHERD and R A ABD-ALHAMEED, "Multi-Service Group Key Establishment for Secure Wireless Mobile Multicast Networks", International Journal of Telecommunications, 27, (2), 69-80, October 2014.

T T MAPOKA, S J SHEPHERD and R A ABD-ALHAMEED, "A new multiple service key management scheme for secure wireless mobile multicast", IEEE Transactions on Mobile Computing, 14, (8), 1545-1559, 16 October 2014, doi:10.1109/TMC.2014.2362760.

T T MAPOKA, S J SHEPHERD, Y A S DAMA, H M AL SABBAGH and R A ABD-ALHAMEED, "Multi-service group key management for high speed wireless mobile multicast networks", EAI Transactions on Mobile Commmunications & Applications, 2, (6), August 2015, doi:10.4108/eai.11-8-2015.150093.

C B BEGGS, C MAGNANO, S J SHEPHERD, P BELOV, D P RAMASAMY, J HAGEMEIER and R ZIVADINOV, "Dirty appearing white matterin the brain is associated with altered cerebrospinal fluid pulsatility and hypertension in individuals without neurologic disease", Journal of Neuroimaging, 26, (1), 136-143, Jan/Feb 2016, Impact Factor 1.82.

V V ZHARKOVA, S J SHEPHERD, E POPOVA and S I ZHARKOV, "Heartbeat of the Sun from Principal Component Analysis and Prediction of Solar Activity on a Millenium Timescale", Nature (Scientific Reports), 5(15689), 1-11, 29 October 2015, doi:10.1038/srep15689.

T T MAPOKA, S J SHEPHERD and R A ABD-ALHAMEED, "Advances in rekeying strategies for secure group key distribution on emerging wireless multicast communication networks", International Journal of Innovations in Communications Security, ??, (??), October 2015, Accepted -- to appear.

T T MAPOKA, S J SHEPHERD and R A ABD-ALHAMEED, "New application of BAN logic to verify multi-service group key management in wireless mobile multicast communication security", IEEE Transactions on Mobile Computing, ??, (??), November 2015, Accepted -- to appear.

A NICHOLS, S J TAIT, K V HOROSHENKOV and S J SHEPHERD, "A model of the free-surface dynamics of shallow turbulent flows", Journal of Hydraulic Research, (2016), doi:10.1080/00221686.2016.1176607.

M M LAGANA, S J SHEPHERD, P CECCONI and C B BEGGS, "Intracranial volumetric changes govern cerebrospinal fluid flow in the Aqueduct of Sylvius in healthy adults", Journal of Biomedical Signal Processing and Control, ??, (??), Accepted -- to appear.

Internationally Refereed Conference Proceedings

S J SHEPHERD and P W SANDERS, "A Distributed Security Architecture for Large Scale Systems", Proceedings of the International Federation of Information Processing (IFIP) International Workshop on Distributed Systems Operations and Management, Berlin, 22-23 October 1990.

S J SHEPHERD, "Viruses - The Management Issues", Proceedings of the Third International PC Security Conference, London, 13-15 July 1992, (Invited Keynote Address).

S J SHEPHERD, "The Security Issues of Radio LANs", Proceedings of the British Computer Society Special Interest Group Workshop on Computer Security, Solihull, 15 September 1992.

S J SHEPHERD, "Wireless Network Security and Cryptography", Proceedings of the British Computer Society Computer Security Specialist Group, Sutton Coldfield, 13 March 1993.

S J SHEPHERD, "Access Control and Cryptography", Proceedings of the First International Network Security Conference, London, 26-27 May 1993.

S J SHEPHERD, "Access Control and Cryptography", Proceedings of the Fourth International PC Security Conference, London, 13-15 September 1993.

M SHAHID, S J SHEPHERD and S K BARTON, "A Comparative Study of Non-Data-Aided Symbol Timing Recovery Techniques for Digital Satellite Communications", Proceedings of the Third European Conference on Satellite Communications, Manchester Conference Centre, 2-4 November 1993, pp 160-164.

S HUSSEIN, S J SHEPHERD and S K BARTON, "Non-Coherent Detection of MFSK Signals in the Presence of Oscillator Phase Noise in an AWGN Channel", Proceedings of the 1994 IEEE 44th Vehicular Technology Conference, pp 1552-1556, IEEE VTC Congress, Stockholm, Sweden, 7-11 June 1994.

S J SHEPHERD and S K BARTON, "The Use of Blum Sequences as Secure Spreading Codes", IEE Colloquium on Spread Spectrum Techniques for Radio Communications Systems, Digest No. 1994/098, pp 8/1-8/6, Savoy Place, London, 15 April 1994.

S J SHEPHERD, "Cryptanalysis of the GSM A5 Cipher Algorithm", IEE Colloquium on Security and Cryptography Applications to Radio Systems, Digest No. 1994/141, Savoy Place, London, 3 June 1994, (COMMERCIAL-IN-CONFIDENCE).

S J SHEPHERD, "An Approach to the Cryptanalysis of Mobile Stream Ciphers", IEE Colloquium on Security and Cryptography Applications to Radio Systems, Digest No. 1994/141, Savoy Place, London, 3 June 1994, (COMMERCIAL-IN-CONFIDENCE).

S J SHEPHERD, "Public Key Stream Ciphers", IEE Colloquium on Security and Cryptography Applications to Radio Systems, Digest No. 1994/141, pp 10/1-10/7, Savoy Place, London, 3 June 1994.

M SHAHID, S J SHEPHERD and S K BARTON, "The Effect of Adjacent Channel Interference in a Bulk-FFT Multicarrier Demodulator with Frequency Domain Symbol Timing Recovery", Proceedings of the 4th International European Space Agency Workshop on DSP Techniques Applied to Space Communications, 26-28 September 1994, Kings College, London.

S J SHEPHERD, "Continuous Authentication by Analysis of Keyboard Typing Characteristics", Proceedings of the 1995 European Convention on Security and Detection (ECOS 95), Conf. Pub. 408, 16-18 May 1995, Brighton, UK.

S J SHEPHERD, "Multifunction Coding and Modulation for Spread Spectrum and CDMA with Inherent Security", Proceedings of the IMA Conference on the Applications of Combinatorial Mathematics, 14-16 December 1994, Wadham College, Oxford.

S J SHEPHERD and J M NORAS, "A very fast hardware replacement for the DES", Proceedings of the Third UK/Australian Symposium on DSP for Communications Systems, 12-14 December 1994, University of Warwick, UK.

S J SHEPHERD and S N BLACKLER, "Characterisation of non- linearity in block ciphers", Proceedings of the Third International Symposium on Communication Theory and Applications, 307-315, 10-14 July 1995, Ambleside, UK.

A H KEMP, S J SHEPHERD and S K BARTON, "Progress report on multi-function coding and modulation for spread spectrum and CDMA with inherent security", EPSRC Annual Conference on Communications, Signal Processing and Coding, 30-31 January 1996, Sheffield, UK.

W G CHAMBERS and S J SHEPHERD, "Register locking in mutual clock control cipher keystream generators", Proceedings of the 3rd International Workshop on Fast Software Encryption, 21-23 February 1996, Sir Isaac Newton Institute, Cambridge University.

S J SHEPHERD, "Security weaknesses in the Netscape world wide web browser", IEE Colloquium on Public Uses of Cryptography, Digest No. 96/085, pp 7/1-7/6, Savoy Place, London, 11 April 1996.

A H KEMP, S J SHEPHERD and S K BARTON, "Correlation properties of a class of cryptographically secure spreading sequences", Proceedings of the 5th International Symposium on Spread Spectrum Techniques and Applications (ISSSTA '96), 22-25 September 1996, Mainz, Germany.

A H KEMP, S J SHEPHERD and S K BARTON, "Multi-function coding and modulation for spread spectrum and CDMA with inherent security", EPSRC Annual Conference on Communications, Signal Processing and Coding, 22/23 January 1997, Sheffield, UK.

M G PARKER, S J SHEPHERD and S K BARTON, "Multi-function coding for minimisation of peak envelope power and error control in multi-tone modulation systems", EPSRC Annual Conference on Communications, Signal Processing and Coding, 22/23 January 1997, Sheffield, UK.

B LIN and S J SHEPHERD, "Encryption in high speed ATM networks", Proceedings of the 1st Public Key Solutions Conference (PKS '97), Section III, 28-30 April 1997, Toronto, Canada.

M G PARKER, S J SHEPHERD and S K BARTON, "Computing the IDFT of BPSK/QPSK input data blocks using optimally matched finite polynomial fields and rings", Proceedings of the 1997 IEEE Information Theory Workshop, 6-12 July 1997, Longyearbyen, The Arctic Islands of Svalbard, Norway.

M G PARKER and S J SHEPHERD, "The generation of finite alphabet codewords with no cyclic shift or reversal symmetry", Proceedings of the 4th International Symposium on Communications Theory and Applications, 150-154, 13-18 July 1997, Ambleside, The English Lakes.

S J SHEPHERD, A H KEMP and S K BARTON, "An efficient key exchange protocol for cryptographically secure CDMA systems", Proceedings of IEEE PIMRC '97, (2), 480-483, 1-4 September 1997, Helsinki, Finland.

D PATIYOOT and S J SHEPHERD, "Security of Wireless ATM networks", Proceedings of IEEE PIMRC '97, (2), 485-489, 1-4 September 1997, Helsinki, Finland.

N IKRAM and S J SHEPHERD, "A cryptographically secure EW database with selective random access", Proceedings of IEEE MILCOM '97, Section 37-03, 2-5 November 1997, Monterrey, California. (Prize winning paper)

B LIN and S J SHEPHERD, "LABYRINTH: A new ultra high speed stream cipher", Proceedings of the 6th IMA Conference on Cryptography and Coding, 17-19 December 1997, Cirencester, UK, 192-198.

D PATIYOOT and S J SHEPHERD, "Authentication protocols for Wireless ATM networks", Proceedings of IEEE ICATM '98, (1), 87-96, 22-24 June 1998, Colmar, France.

D PATIYOOT and S J SHEPHERD, "Techniques for authentication protocols and key management for Wireless ATM networks", Proceedings of IEEE ICT '98, (4), 423-427, 21-25 June 1998, Porto Carras, Greece.

D PATIYOOT and S J SHEPHERD, "Security issues in Wireless ATM networks", Proceedings of IEEE PIMRC '98, (3), 1555-1559, 8-11 September 1998, Boston, USA.

D PATIYOOT and S J SHEPHERD, "Security Issues for Wireless ATM networks", Proceedings of IEEE ICUPC '98, (2), 1359-1363, 5-9 October 1998, Florence, Italy.

N IKRAM and S J SHEPHERD, "A new approach towards cryptographically secure IFF technique", Proceedings of IEEE MILCOM '98 Section 30-01, 20-23 October 1998, Bedford, MA.

D PATIYOOT and S J SHEPHERD, "Implementation and Analysis of Trust Proceedures in Certificate Authorities for Wireless ATM Networks", Proceedings of IoP PREP '99, 419-423, 5-7 January 1999, Manchester, UK.

J C MEX-PEREIRA and S J SHEPHERD, "Improved Fast Correlation Attacks on Multiplexer Generators", Proceedings of London Communications Symposium LCS2002, University College London, London UK, 9-10 September 2002.

S J SHEPHERD, "New Computational Frameworks for Digital Signal Processing", Proceedings of 2nd International Conference on Mathematics in Communications, Lancaster UK, 153-154, 16-18 December 2002, (Invited Keynote Address).

S J SHEPHERD, N D KAY and P W J VAN EETVELT, "An Efficient Algorithm for Computing Genetic Spectra", Proceedings of Oxford Bioinformatics Forum 2003, University of Oxford, UK, 24 September 2003.

S J SHEPHERD, "A High Performance Linear Complexity Fourier Transform", Proceedings of New Frontiers in Computational Mathematics, University of Manchester/UMIST UK, 9-11 January 2004.

N RAO and S J SHEPHERD, "Detection of 3-Periodicity in Genomic Sequences based on AR Techniques", Proceedings of IEEE International Conference on Communications, Circuits and Systems ICCCAS 2004, Chengdu, China, 27-29 June 2004.

N RAO and S J SHEPHERD, "Extracting Characteristic Patterns from Genome-Wide Expression Data by NMF", Proceedings of IEEE International Conference on Computational Systems Bioinformatics CSB 2004, 570-571, Stanford, California, 16-19 August 2004, doi: 10.1109/CSB.2004.1332499.

S J SHEPHERD, "The Very Fast Fourier Transform ~ A Tool for Science in the 21st Century", Proceedings of 10th International Conference on Electrical and Electronic Engineering X ICEEE 2004, Acapulco, Mexico, 6-11 September 2004, (Invited Plenary Keynote Address).

A D ELBAYOUMY and S J SHEPHERD, "Using the Tiny Encryption Algorithm for Securing Voice over IP", Proceedings of 7th Annual International Symposium on Advanced Radio Technologies, Boulder, Colorado, 1-3 March 2005.

A D ELBAYOUMY and S J SHEPHERD, "QoS Control Using an Endpoint CPU Capability Detector in a Secure VoIP System", Proceedings of 10th IEEE Symposium on Computers and Communications ISCC2005, 792-797, La Magna del Mar Menor, Spain, 27-30 June 2005, doi: 10.1109/ISCC.2005.129.

A D ELBAYOUMY and S J SHEPHERD, "A High Grade Secure VoIP System Using an Endpoint CPU Capability Detector", Proceedings of the 1st IEE International Symposium on Internet Technologies & Applications, Wrexham, Wales, 7-9 September 2005.

Y ZHOU, J M NORAS and S J SHEPHERD, "On the Nested FFT Algorithm", Digest of the 2nd IEE/EURASIP Conference on DSP-Enabled Radio, 27/1 - 27/6, University of Southampton, UK, 19-20 September 2005.

A D ELBAYOUMY and S J SHEPHERD, "Stream or Block Ciphers for Securing VoIP?", Proceedings of the 6th International Network Conference INC2006, Plymouth, UK, 11-14 July 2006.

A D ELBAYOUMY and S J SHEPHERD, "VoIP Security", Proceedings of the 7th Annual International Conference on Electrical Engineering ICEE2006, Egyptian Military College, Cairo, Egypt, 16-18 May 2006.

S J SHEPHERD, "A Method for Computing Symbolic Eigensystems Avoiding Computation of Roots of the Characteristic Polynomial", Proceedings of the 7th Annual International Conference on Electrical Engineering ICEE2006, Egyptian Military College, Cairo, Egypt, 16-18 May 2006, (Invited Plenary Keynote Address).

N RAO and S J SHEPHERD, "Clustering Gene Expression Data for Periodic Genes based on INMF", Proceedings of the International Conference on Intelligent Computing IEEE/ICIC2006, 412-423, Kunming, China, 16-18 August 2006. Published by Springer Verlag (Berlin), Lecture Notes in Computer Science, 4115, (2006), ISBN 978-3-540-37277-6, doi: 10.1007/11816102-45.

A D ELBAYOUMY and S J SHEPHERD, "A High Grade Secure VoIP Solution", Proceedings of the International Conference on Advanced Technologies in Telecommunications and Control Engineering ATTCE 2006, INTI College, Kuala Lumpur, Malaysia, 28-29 August 2006.

E C BUCKLEY and S J SHEPHERD, "Approximation of the Quantum Fourier Transform in Shor's Integer Factoring Algorithm", Proceedings of the Second International Conference on Internet Technologies and Applications ITA07, Wrexham, Wales, 4-7 September 2007.

S J SHEPHERD, "Internet Search Technologies in the Fight Against Hospital Acquired Infection", Proceedings of the Second International Conference on Internet Technologies and Applications ITA07, Wrexham, Wales, 4-7 September 2007, (Invited Plenary Keynote Address).

C J NOAKES, L A FLETCHER, P A SLEIGH, C B BEGGS and S J SHEPHERD, "Negative Air Ionisers for Reducing Hospital Infection: Physical and Biological Mechanisms", Proceedings of the ??th Annual Meeting of the Aerosol Society, Leeds, UK, 8th April 2008.

N T ABDELMAJID, M A HOSSAIN, S J SHEPHERD and K W MAHMOUD, "Intelligent Evaluation Tool for Security Protocol Based on BAN Logic (I)", Proceedings of the 3rd International Conference on Information & Communication Technologies, Umayyad Palace, Damascus, Syria, 7-11 April 2008.

N T ABDELMAJID, M A HOSSAIN, S J SHEPHERD and K W MAHMOUD, "Intelligent Evaluation Tool for Security Protocol Based on BAN Logic (II)", Proceedings of the 7th European Conference on Information Warfare and Security, Plymouth, UK, 30 June - 1 July 2008.

N T ABDELMAJID, M A HOSSAIN, S J SHEPHERD and K W MAHMOUD, "'Where you are' based Authentication: Improvment and Evaluation", Proceedings of the 7th European Conference on Information Warfare and Security, Plymouth, UK, 30 June - 1 July 2008.

A NICHOLS, K V HOROSHENKOV, S J SHEPHERD, K ATTENBOROUGH and S TAIT, "Sonic Characterisation of Water Surface Waves", Proceedings of ISPF 2010 International symposium on Hydraulic Physical Modeling and Field Investigation Technology, Nanjing, China, 13-15 September 2010.

A NICHOLS, S TAIT, K HOROSHENKOV, S SHEPHERD and G MAXIMOV, "An airborne monochromatic acoustic method to monitor the hydraulic characteristics of shallow water flows", Proceedings of the 160th meeting of the Acoustical Society of America & 2nd PanAmerican/Iberian Meeting on Acoustics, Cancun, Mexico, 15-19 November 2010.

A NICHOLS, K HOROSHENKOV, S SHEPHERD, K ATTENBOROUGH and S TAIT, "An airborne broadband acoustic method to measure the characteristics of a dynamically rough air-water interface", Proceedings of the 160th meeting of the Acoustical Society of America & 2nd PanAmerican/Iberian Meeting on Acoustics, Cancun, Mexico, 15-19 November 2010.

S J SHEPHERD, "Plethysmography and multiple sclerosis: analysis of novel data", Proceedings of the 1st Annual Meeting of the International Society for Neurovascular Diseases, Bologna, Italy, 14-15 March 2011.

A NICHOLS, S TAIT, K HOROSHENKOV, S SHEPHERD and G MAXIMOV, "An airborne acoustic method to monitor the hydraulic characteristics of shallow water flows", Proceedings of the 34th IAHR World Congress, Brisbane, Australia, 26 June - 1 July 2011.

L RAYNER, C B BEGGS, K G KERR, S J SHEPHERD, A M SNELLING, "Effect of a decontamination device producing hydroxyl radicals on the survival of airborne opportunistic pathogens", Proceedings of 22nd European Congress of Clinical Microbiology and Infectious Diseases, London, 31 March 3 April 2012.

A NICHOLS and S J SHEPHERD, "Visualising the variation in normality of a turbulent velocity field", Proceedings of RIVER FLOW 2012, Vol. 1, 85-89, San Jose, Costa Rica, 5 - 7 September 2012, ISBN 978-1-4665-7551-6.

M ADEKA, S J SHEPHERD and R A ABD ALHAMEED, "Resolving the password security purgatory in the contexts of technology, security and human factors", Proceedings of the 2013 International Conference on Computer Applications Technology (ICCAT), Sousse, Tunisia, 20-22 January 2013, doi: 10.1109/ICCAT.2013.6522044.

P ZAMBONI, S J SHEPHERD, C B BEGGS, F SPEZIALE, R ZIVADINOV, P VEROUX, S BASTIANELLO, M DRAKE, F SALVE and M BIZZARRI, "Identifying CCSVI with cervical plethysmography, TELEPASS study and Kosmomed project presentation", Proceedings of the 4th Annual Meeting of the International Society for Neurovascular Diseases, San Francisco, USA, 7-9 February 2014.

V V ZHARKOVA, S I ZHARKOV, S J SHEPHERD and E POPOVA, "PCI analysis of sunspot and background magenetic field variations in solar cycles 21-23", Proceedings of the 40th COSPAR Scientific Assembly, Moscow, Russia, 2-10 August 2014.

T T MAPOKA, S J SHEPHERD and R A ABD ALHAMEED, "Novel rekeying approach for secure multiple multicast groups over wireless networks" Proceedings of 10th IEEE International Conference on Wireless Communications and Computing (IWCMC 2014), pp 839 - 844, Nicosia, Cyprus, 4-8 August 2014, doi:10.1109/IWCMC.2014.6906465.

T T MAPOKA, S J SHEPHERD, R A ABD ALHAMEED and K O ANOH, "Efficient authenticated multi-service group key management for secure wireless mobile multicast" Proceedings of 3rd IEEE International Conference on Future Generation Communication Technologies (FGCT 2014), pp 66 - 71, Luton, UK, 20-22 August 2014, doi:10.1109/FGCT.2014.6933227.

T T MAPOKA, S J SHEPHERD, R A ABD ALHAMEED and K O ANOH, "A multi-service cluster-based decentralised group key management scheme for high mobility users" Proceedings of 8th International Conference on Wireless Internet and Vehicular Communication (WiCON 2014), Lisbon, Portugal, 13-14 November 2014. Revised Selected Papers, 146, p. 305, Springer.

T T MAPOKA, S J SHEPHERD, R A ABD ALHAMEED and K O ANOH, "Handover optimised authentication for high mobility wireless multicast" Proceedings of 17th IEEE International Conference on Modelling & Simulation (UKSim 2015), Cambridge, UK, 25-27 March 2015.

C B BEGGS, S J SHEPHERD, P CECCONI and M M LAGANA, "Blood storage within the intracranial space and its impact on cerebrospinal fluid dynamics", Proceedings of the 5th Annual Meeting of the International Society for Neurovascular Diseases, Naples, Italy, 27-28 March 2015.

T T MAPOKA, S J SHEPHERD, R A ABD ALHAMEED and K O ANOH, "Advances in rekeying strategies for mobile multicast security in emerging wireless networks : Issues, solutions and challenges" IEEE Sponsored International Technical Conference on Computing and Technology Innovation (CTI 2015), University of Bedfordshire, Luton, UK, 27-28 May 2015.

V V ZHARKOVA, S J SHEPHERD, E POPOVA and S I ZHARKOV, "Heartbeat of the Sun derived with Principal Component Analysis and Prediction of Solar Activity on a Millenium Scale", National Meeting of the Royal Astronomical Society (NAM 2015), Venue Cymru, Llandudno, North Wales, 5-9 July 2015.

T T MAPOKA, S J SHEPHERD, R A ABD ALHAMEED and K O ANOH, "Improving authentication function in wireless mobile multicast communication" Proceedings of 6th IEEE International Conference on Internet Technologies and Applications (ITA 2015), Wrexham, Wales, 8-11 September 2015.

C B BEGGS, S J SHEPHERD, P CECCONI and M M LAGANA, "Analysing the aqueductal cerebrospinal fluid pulse : a statistical approach", Proceedings of the 7th Annual Meeting of the International Society for Neurovascular Diseases, Taormina, Sicily, Italy, 4-6 May 2017.

Books - Contributed Chapters

S J SHEPHERD, "Security Architecture for Open Distributed Systems: Chapters 7-8: Extended OSI Security Architecture", Muftic, S. (Ed), John Wiley & Sons, Chichester, England, 1993, ISBN 0 471 93472 0.

S J SHEPHERD, "Multifunction Coding and Modulation for Spread Spectrum and CDMA with Inherent Security", Selected Papers from the IMA Conference on the Applications of Combinatorial Mathematics, 14-16 December 1994, Wadham College, Oxford, Oxford University Press.

S J SHEPHERD and S N BLACKLER, "Characterisation of non- linearity in block ciphers", Selected Papers from the Third International Symposium on Communication Theory and Applications, 307-315, 10-14 July 1995, Ambleside, UK, Kluwer Academic Press.

T T MAPOKA, H M AL SABBAGH, Y A S DAMA, S J SHEPHERD, R A ABD-ALHAMEED, M BIN MELHA and K O ANOH "A multi-service cluster-based decentralised group key management scheme for high mobility users", Wireless Internet, 305-312, 2015, Springer International Publishing.

Professional Journal Papers

S J SHEPHERD, "Digging Deep into Disks", .EXE magazine "Code Page", 6, (1), pp 79-84, June 1991.

S J SHEPHERD, "Computer Viruses", Amstrad PC Magazine, pp 64- 65, March 1992.

S J SHEPHERD, "A fast, high security public key processor", Innovation Journal, pp 16-17, June 1992.

Research Reports

S J SHEPHERD and P W SANDERS, "A Comprehensive Security Service - Functional Specification", IBM Internal Document, IBM (United Kingdom Laboratories), Hursley Park, Winchester, UK, May 1989.

S J SHEPHERD, "Factoring with false witnesses", Internal research note No.1, February 1992.

S J SHEPHERD, "On the volumes of n-spheres", Internal research note No.2, February 1992.

S J SHEPHERD, "A High Speed Cryptographic Engine", Internal Research Note No.4, (COMMERCIAL IN CONFIDENCE), June 1992.

S J SHEPHERD, "A Numerical Processor with Supercomputer Performance Based on State-of-the-Art Finite-Impulse-Response Filter Digital Signal Processors", Internal Research Note No.5, (COMMERCIAL IN CONFIDENCE), October 1992.

S J SHEPHERD, "Primitive Polynomials over GF(2) of Hamming Weight 3 and 5 up to high order", Report No. 573, March 1995.

Research Publications (Other)

S J SHEPHERD, "A Distributed Security Architecture for Large Scale Systems", Ph.D thesis, University of Plymouth, June 1992.

S J SHEPHERD, "Some New Directions in Genetics", New Scientist, 1879, 26 June 1993, p 15.

P FIELD, S K BARTON, S J SHEPHERD, M SHAHID and C W WYATT- MILLINGTON, "A Study of a Multi-Carrier Demodulator with Frequency-Domain Symbol Timing Correction", final report on European Space Agency contract #130028, February 1994.

M SHAHID, S J SHEPHERD, BO LIN, I KHAIRUDDIN and S K BARTON, "Non-linear amplifier characterisation", final report on European Space Agency contract #130028, December 1996.

Research Publications (Restricted)

40 papers in signal processing for guided weapons, military communications and underwater acoustics, MoD restricted access only.


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Updated : 4 May 2017.