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Article

Frossard, Jean-Pierre, Grierson, Sylvia, Cheney, Tanya, Steinbach, Falko, Choudhury, Bhudipa and Williamson, Susanna (2017) UK Pigs at the Time of Slaughter: Investigation into the Correlation of Infection with PRRSV and HEV Viruses, 9 (6).

Steinbach, F, Dastjerdi, A, Peake, J, La Rocca, SA, Tobin, FP, Frossard, JP and Williamson, S (2016) A retrospective study detects a novel variant of porcine epidemic diarrhea virus in England in archived material from the year 2000 PeerJ.

Dastjerdi, A, Carr, J, Ellis, RJ, Steinbach, F and Williamson, S (2015) Porcine Epidemic Diarrhea Virus among Farmed Pigs, Ukraine EMERGING INFECTIOUS DISEASES, 21 (12). pp. 2235-2237.

Frossard, JP, Hughes, GJ, Westcott, DG, Naidu, B, Williamson, S, Woodger, NG, Steinbach, Falko and Drew, TW (2013) Porcine reproductive and respiratory syndrome virus: genetic diversity of recent British isolates. Veterinary Microbiology, 162 (2-4). pp. 507-518.

Miller, AJ, Twomey, DF, Davies, RH, Teale, CJ, Williamson, SM, Reichel, R, Featherstone, CA, Cook, AJ, Snow, LC and Armstrong, JD (2011) Salmonella serovars and antimicrobial resistance patterns on a sample of high seroprevalence pig farms in England and Wales (2003-2008). Zoonoses Public Health, 58 (8). pp. 549-559.

Djurović, S and Williamson, S (2010) Influence of supply harmonic voltages on DFIG stator current and power spectrum 19th International Conference on Electrical Machines, ICEM 2010.

Bidewell, CA, Woodger, NGA, Cook, AJC, Carson, TV, Gale, SL, Chanter, JI and Williamson, SM (2010) Campylobacter fetus subspecies fetus abortion in alpacas (Vicugna pacos) VETERINARY RECORD, 167 (12). pp. 457-458.

Djurović, S and Williamson, S (2010) Investigation of the impact of speed-ripple and inertia on the steady-state current spectrum of a DFIG with unbalanced rotor IET Conference Publications, 2010 (563 CP).

Williamson, SM, Scholes, SFE, Welchman, DDB, Dennison, M, Batten, CA, Williams, DL, Mertens, PPC, Mellor, PS and Darpel, KE (2010) Bluetongue virus serotype 8-associated hydranencephaly in two calves in south-eastern England VETERINARY RECORD, 167 (6). pp. 216-218.

Twomey, DF, Miller, AJ, Snow, LC, Armstrong, JD, Davies, RH, Williamson, SM, Featherstone, CA, Reichel, R and Cook, AJC (2010) Association between biosecurity and Salmonella species prevalence on English pig farms VETERINARY RECORD, 166 (23). pp. 722-724.

Richards, S, Gibbs, RA, Gerardo, NM, Moran, N, Nakabachi, A, Stern, D, Tagu, D, Wilson, ACC, Muzny, D, Kovar, C, Cree, A, Chacko, J, Chandrabose, MN, Dao, MD, Dinh, HH, Gabisi, RA, Hines, S, Hume, J, Jhangian, SN, Joshi, V, Lewis, LR, Liu, Y-S, Lopez, J, Morgan, MB, Nguyen, NB, Okwuonu, GO, Ruiz, SJ, Santibanez, J, Wright, RA, Fowler, GR, Hitchens, ME, Lozado, RJ, Moen, C, Steffen, D, Warren, JT, Zhang, J, Nazareth, LV, Chavez, D, Davis, C, Lee, SL, Patel, BM, Pu, L-L, Bell, SN, Johnson, AJ, Vattathil, S, Williams, RL, Shigenobu, S, Dang, PM, Morioka, M, Fukatsu, T, Kudo, T, Miyagishima, S-Y, Jiang, H, Worley, KC, Legeai, F, Gauthier, J-P, Collin, O, Zhang, L, Chen, H-C, Ermolaeva, O, Hlavina, W, Kapustin, Y, Kiryutin, B, Kitts, P, Maglott, D, Murphy, T, Pruitt, K, Sapojnikov, V, Souvorov, A, Thibaud-Nissen, F, Camara, F, Guigo, R, Stanke, M, Solovyev, V, Kosarev, P, Gilbert, D, Gabaldon, T, Huerta-Cepas, J, Marcet-Houben, M, Pignatelli, M, Moya, A, Rispe, C, Ollivier, M, Quesneville, H, Permal, E, Llorens, C, Futami, R, Hedges, D, Robertson, HM, Alioto, T, Mariotti, M, Nikoh, N, McCutcheon, JP, Burke, G, Kamins, A, Latorre, A, Kudo, T, Moran, NA, Ashton, P, Calevro, F, Charles, H, Colella, S, Douglas, A, Jander, G, Jones, DH, Febvay, G, Kamphuis, LG, Kushlan, PF, Macdonald, S, Ramsey, J, Schwartz, J, Seah, S, Thomas, G, Vellozo, A, Cass, B, Degnan, P, Hurwitz, B, Leonardo, T, Koga, R, Altincicek, B, Anselme, C, Atamian, H, Barribeau, SM, de Vos, M, Duncan, EJ, Evans, J, Ghanim, M, Heddi, A, Kaloshian, I, Vincent-Monegat, C, Parker, BJ, Perez-Brocal, V, Rahbe, Y, Spragg, CJ, Tamames, J, Tamarit, D, Tamborindeguy, C, Vilcinskas, A, Bickel, RD, Brisson, JA, Butts, T, Chang, C-C, Christiaens, O, Davis, GK, Duncan, E, Ferrier, D, Iga, M, Janssen, R, Lu, H-L, McGregor, A, Miura, T, Smagghe, G, Smith, J, van der Zee, M, Velarde, R, Wilson, M, Dearden, P, Edwards, OR, Gordon, K, Hilgarth, RS, Rider, SD, Robertson, HM, Srinivasan, D, Walsh, TK, Ishikawa, A, Jaubert-Possamai, S, Fenton, B, Huang, W, Jones, DH, Rizk, G, Lavenier, D, Nicolas, J, Smadja, C, Robertson, HM, Zhou, J-J, Vieira, FG, He, X-L, Liu, R, Rozas, J, Field, LM, Ashton, PD, Campbell, P, Carolan, JC, Douglas, AE, Fitzroy, CIJ, Reardon, KT, Reeck, GR, Singh, K, Wilkinson, TL, Huybrechts, J, Abdel-latief, M, Robichon, A, Veenstra, JA, Hauser, F, Cazzamali, G, Schneider, M, Williamson, M, Stafflinger, E, Hansen, KK, Grimmelikhuijzen, CJP, Price, DRG, Caillaud, M, van Fleet, E, Ren, Q, Gatehouse, JA, Brault, V, Monsion, B, Diaz, J, Hunnicutt, L, Ju, H-J, Pechuan, X, Aguilar, J, Cortes, T, Ortiz-Rivas, B, Martinez-Torres, D, Dombrovsky, A, Dale, RP, Davies, TGE, Williamson, MS, Jones, A, Sattelle, D, Williamson, S, Wolstenholme, A, Vellozo, A, Cottret, L, Febvay, G, Calevro, F, Sagot, MF, Heckel, DG and Hunter, W (2010) Genome Sequence of the Pea Aphid Acyrthosiphon pisum PLOS BIOLOGY, 8 (2), ARTN e1000.

Djurovic, S and Williamson, S (2010) A coupled-circuit model for a DFIG operating under unbalanced conditions COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING, 29 (5). pp. 1393-1406.

Djurovic, S, Williamson, S, Tavner, PJ and Yang, W (2009) Condition monitoring artefacts for detecting winding faults in wind turbine DFIGs European Wind Energy Conference and Exhibition 2009, EWEC 2009, 1. pp. 491-512.

Darpel, KE, Batten, CA, Veronesi, E, Williamson, S, Anderson, P, Dennison, M, Clifford, S, Smith, C, Philips, L, Bidewell, C, Bachanek-Bankowska, K, Sanders, A, Bin-Tarif, A, Wilson, AJ, Gubbins, S, Mertens, PP, Oura, CA and Mellor, PS (2009) Transplacental transmission of bluetongue virus 8 in cattle, UK. Emerg Infect Dis, 15 (12). pp. 2025-2028.

Djurovic, S, Williamson, S and Renfrew, A (2009) Dynamic model for doubly-fed induction generators with unbalanced excitation, both with and without winding faults IET ELECTRIC POWER APPLICATIONS, 3 (3). pp. 171-177.

Apsley, JM, Gonzalez-Villasenor, A, Barnes, M, Smith, AC, Williamson, S, Schuddebeurs, JD, Norman, PJ, Booth, CD, Burt, GM and McDonald, JR (2009) Propulsion Drive Models for Full Electric Marine Propulsion Systems IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 45 (2). pp. 676-684.

Feng, YN, Apsley, J, Williamson, S, Smith, AC and Ionel, DM (2009) Reduced Losses in Die-cast Machines with Insulated Rotors 2009 IEEE INTERNATIONAL ELECTRIC MACHINES & DRIVES CONFERENCE, VOLS 1-3. pp. 57-64.

Fearnley, C, Wakeley, PR, Gallego-Beltran, J, Dalley, C, Williamson, S, Gaudie, C and Woodward, MJ (2008) The development of a real-time PCR to detect pathogenic Leptospira species in kidney tissue RESEARCH IN VETERINARY SCIENCE, 85 (1). pp. 8-16.

Williamson, S, Woodger, N and Darpel, K (2008) Differential diagnosis of bluetongue in cattle and sheep In Practice, 30 (5). pp. 242-251.

Elders, IM, Norman, PJ, Schuddebeurs, JD, Booth, CD, Burt, GM, McDonald, JR, Apsley, J, Barnes, M, Smith, A, Williamson, S, Loddick, S and Myers, I (2007) Modelling and analysis of electro-mechanical interactions between prime-mover and load in a marine IFEP system IEEE Electric Ship Technologies Symposium, ESTS 2007. pp. 77-84.

Levi, E, Bojoi, R, Profumo, F, Toliyat, HA and Williamson, S (2007) Multiphase induction motor drives - a technology status review IET ELECTRIC POWER APPLICATIONS, 1 (4). pp. 489-516.

Apsley, JM, Williamson, S, Smith, AC and Barnes, M (2006) Induction motor performance as a function of phase number IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 153 (6). pp. 898-904.

Norman, PJ, Schuddebeurs, JD, Booth, CD, Galloway, SJ, Burt, GM, McDonald, JR, Villasenor, A, Todd, R, Apsley, JM, Barnes, M, Smith, AC, Williamson, S, Mody, B, Tsoudis, E, Pilidis, P and Singh, R (2006) Simulating IFEP systems MER-MARINE ENGINEERS REVIEW. 26-+.

Apsley, JM and Williamson, S (2005) Analysis of multi-phase induction machines with winding faults 2005 IEEE International Conference on Electric Machines and Drives. pp. 249-255.

Williamson, S and Poh, CY (2005) The effect of inter-bar currents in a PSC motor 2005 IEEE International Conference on Electric Machines and Drives. pp. 975-980.

Williamson, S and Poh, CY (2005) Inter-bar currents in cage induction motors IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 152 (5). pp. 1106-1112.

Williamson, S (2004) The future of electrical machines? 2004 1st International Conference on Power Electronics Systems and Applications Proceedings. pp. 10-12.

Williamson, S and Smith, AC (2002) Equivalent circuits for cage induction motors with inter-bar currents IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 149 (3). pp. 173-183.

Williamson, S and McClay, CI (1999) The effect of axial variations in saturation due to skew on induction motor equivalentcircuit parameters IEEE Transactions on Industry Applications, 35 (6).

McClay, CI and Williamson, S (1998) Influence of rotor skew on cage motor losses IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 145 (5). pp. 414-422.

Williamson, S and Smith, AC (1997) Induction motor modelling - choosing the tool to do the job IEE Colloquium (Digest) (166).

Williamson, S, Ferreira, AC and Wallace, AK (1997) Generalised theory of the brushless doubly-fed machine .1. Analysis IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 144 (2). pp. 111-122.

Williamson, S and Ferreira, AC (1997) Generalised theory of the brushless doubly-fed machine .2. Model verification and performance IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 144 (2). pp. 123-129.

Williamson, S (1997) Stray losses - A residue of ignorance POWER ENGINEERING JOURNAL, 11 (1). p. 3.

Williamson, S (1996) The induction motor - A state-of-the-ark technology? POWER ENGINEERING JOURNAL, 10 (6). pp. 247-254.

Williamson, S and Gersh, D (1996) Representation of rotor spiders and axial ventilation ducts in reduced finite-element models for cage rotors IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 143 (6). pp. 423-428.

Williamson, S and Healey, RC (1996) Space vector representation of advanced motor models for vector controlled induction motors IEE PROCEEDINGS-ELECTRIC POWER APPLICATIONS, 143 (1). pp. 69-77.

Mueller, MA, Williamson, S, Flack, TJ, Atallah, K, Baholo, B, Howe, D and Mellor, PH (1995) Calculation of iron losses from time-stepped finite-element models of cage induction machines IEE Conference Publication (412). pp. 88-92.

Williamson, S, Knight, RE and White, IW (1995) Implementation of finite-element analysis in a cage induction motor electrical design program IEE Conference Publication (412). pp. 57-61.

Williamson, S and Gersh, D (1995) Representation of rotor spiders in reduced finite-element models for cage rotors IEE Conference Publication (412). pp. 72-76.

Williamson, S and Walker, JD (1991) Calculation of stall bar temperature rise IEE Conference Publication (341). pp. 271-275.

Conference or Workshop Item

Williamson, S and Djurovic, S (2009) Origins of Stator Current Spectra in DFIGs with Winding Faults and Excitation Asymmetries In: IEEE International Electric Machines and Drives Conference (IEMDC 2009), 2009-05-03 - 2009-05-06, Miami, FL.

Djurovic, S and Williamson, S (2009) A coupled-circuit model for a DFIG operating under unbalanced conditions In: International Conferece on Electrical Machines, 2008-09-06 - 2008-09-09, Vilamoura, PORTUGAL.

Williamson, S and Feng, YN (2008) Slot-harmonic fields in closed-slot machines In: IEEE International Electric Machines and Drives Conference (IEMDC 2007), 2007-05-03 - 2007-05-05, Antalya, TURKEY.

Djurovic, S and Williamson, S (2008) Losses and Pulsating Torques in DFIGs with Unbalanced Stator and Rotor Excitation In: IEEE International Conference on Sustainable Energy Technologies, 2008-11-24 - 2008-11-27, Singapore, SINGAPORE.

Feng, YN and Williamson, S (2007) Calculation of harmonic air-gap permeance coefficients using reduced finite-element models In: 33rd Annual Conference of the IEEE-Industrial-Electronics-Society, 2007-11-05 - 2007-11-08, Taipei, TAIWAN.

Apsley, JM, Villasenor, AG, Barnes, M, Smith, AC, Williamson, S, Schuddebeurs, JD, Norman, PJ, Booth, CD, Burt, GM and McDonald, JR (2007) Propulsion drive models for full electric marine propulsion systems In: IEEE International Electric Machines and Drives Conference (IEMDC 2007), 2007-05-03 - 2007-05-05, Antalya, TURKEY.

Apsley, J and Williamson, S (2006) Analysis of multiphase induction machines with winding faults In: IEEE International Electric Machines and Drives Conference, 2005-05-15 - 2005-05-18, San Antonio, TX.

Williamson, S and Poh, CY (2006) The effect of interbar currents in a permanent split capacitor motor In: IEEE International Electric Machines and Drives Conference, 2005-05-15 - 2005-05-18, San Antonio, TX.

Williamson, S, Poh, CY and Smith, AC (2003) Estimation of the inter-bar resistance of a cast cage rotor In: IEEE International Electronic Machines and Drives Conference, 2003-06-01 - 2003-06-04, MADISON, WI.

Smith, AC, Williamson, S and Hodge, CG (2003) High torque dense naval propulsion motors In: IEEE International Electronic Machines and Drives Conference, 2003-06-01 - 2003-06-04, MADISON, WI.

Williamson, S, McDonald, S, Green, A and Barnes, M (2003) Low-cost inverters for pump and fan drives In: 3rd International Conference on Energy Efficiency in Motor Driven Systems, 2002-09-18 - 2002-09-20, TREVISO, ITALY.

Williamson, S and Smith, AC (2002) Influence of interbar currents on the harmonic losses and skew in cage induction machines In: International Conference on Power Electronics, Machines and Drives, 2002-04-16 - 2002-04-18, UNIV BATH, BATH, ENGLAND.

Williamson, S and Smith, S (2001) Pulsating torque and losses in multiphase induction machines In: 36th Annual Meeting of the Industry-Application-Society (IAS), 2000-09-30 - 2000-10-04, CHICAGO, IL.

McClay, CI and Williamson, S (2000) The variation of cage motor losses with skew In: Annual Meeting of the Industry-Applications-Society, 1998-10-12 - 1998-10-16, ST LOUIS, MO.

Ferreira, AC and Williamson, S (1999) Time-stepping finite-element analysis of brushless doubly fed machine taking iron loss and saturation into account In: Annual Meeting of the Industry-Applications-Society, 1997-10-05 - 1997-10-09, NEW ORLEANS, LA.

Williamson, S, Healey, RC, Lloyd, JD and Tevaarwerk, JL (1997) Rotor cage anomalies and unbalanced magnetic pull in single-phase induction motors In: 1996 Industry-Applications-Society Annual Meeting, 1996-10-06 - 1996-10-10, SAN DIEGO, CA.

Williamson, S and Boger, MS (1997) Impact of inter-bar-currents on the performance of the brushless doubly-fed motor In: 1997 IEEE Industry Applications Conference / 32nd IAS Annual Meeting, 1997-10-05 - 1997-10-09, NEW ORLEANS, LA.

Williamson, S and Knight, AM (1997) Performance of skewed single phase line-start permanent magnet motors In: 1997 IEEE Industry Applications Conference / 32nd IAS Annual Meeting, 1997-10-05 - 1997-10-09, NEW ORLEANS, LA.

Williamson, S and Smith, A (1997) Pulsed coilgun limits In: 8th Symposium on Electromagnetic Launch Technology (EML), 1996-04-21 - 1996-04-24, BALTIMORE, MD.

Williamson, S and McClay, CI (1997) The effect of axial variations in saturation due to skew on induction motor equivalent-circuit parameters In: 1997 IEEE Industry Applications Conference / 32nd IAS Annual Meeting, 1997-10-05 - 1997-10-09, NEW ORLEANS, LA.

McClay, CI and Williamson, S (1997) The influence of rotor skew on cage motor losses In: 8th International Conference on Electrical Machines and Drives, 1997-09-01 - 1997-09-03, UNIV CAMBRIDGE, ROBINSON COLL, CAMBRIDGE, ENGLAND.

Kamper, MJ, vanderMerwe, FS and Williamson, S (1996) Direct finite element design optimisation of the cageless reluctance synchronous machine In: 1996 IEEE / PES Winter Meeting, 1996-01-21 - 1996-01-25, BALTIMORE, MD.

Baholo, B, Atallah, K, Mellor, PH, Howe, D, Mueller, MA, Flack, TJ and Williamson, S (1996) Effect of high frequency flux ripple on iron loss in induction machines In: 6th European Magnetic Materials and Applications Conference (EMMA 95), 1995-09-04 - 1995-09-08, TU VIENNA, VIENNA, AUSTRIA.

Flack, TJ and Williamson, S (1996) Investigation of the losses in the stator duct spacers of large ac motors using the A-psi 3-D eddy current formulation In: 10th Conference on the Computation of Electromagnetic Fields (COMPUMAG), 1995-07-10 - 1995-07-13, BERLIN, GERMANY.

Williamson, S and McClay, CI (1996) Optimization of the geometry of closed rotor slots for cage induction motors In: 1995 IEEE Industry-Applications-Society Annual Meeting, 1995-10-08 - 1995-10-12, LAKE BUENA VISTA, FL.

Williamson, S and Gersh, DR (1996) Finite element calculation of double-cage rotor equivalent circuit parameters In: 1995 IEEE/PES Summer Meeting, 1995-07-23 - 1995-07-25, PORTLAND, OR.

Smith, AC, Healey, RC and Williamson, S (1996) A transient induction motor model including saturation and deep bar effect In: 1995 IEEE/PES Summer Meeting, 1995-07-23 - 1995-07-25, PORTLAND, OR.

Williamson, S, Healey, RC and Lloyd, JD (1996) Rotor cage anomalies and unbalanced magnetic pull in single-phase induction motors .1. Analysis In: 1996 IEEE Industry Applications Conference / 31st IAS Annual Meeting, 1996-10-06 - 1996-10-10, SAN DIEGO, CA.

Williamson, S, Healey, RC and Tevaarwerk, JL (1996) Rotor cage anomalies and unbalanced magnetic pull in single-phase induction motors .2. Experimental and theoretical studies. In: 1996 IEEE Industry Applications Conference / 31st IAS Annual Meeting, 1996-10-06 - 1996-10-10, SAN DIEGO, CA.

Williamson, S, Mueller, MA, McClay, CI and Gersh, DR (1996) A finite element based method for calculating cage induction motor rotor impedances In: 3rd International Conference on Software for Electrical Engineering, 1996-05 - ?, CTR STUDI CAPPUCCINI CASSA RISPARMIO SAN MINIATO, PISA, ITALY.

Williamson, S and McClay, CI (1995) Optimisation of the geometry of closed rotor slots for cage induction motors In: 1995 IEEE Industry Applications Conference/30th IAS Annual Meeting, 1995-10-08 - 1995-10-12, LAKE BUENA VISTA, FL.

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