Dr Damian Farnell
(he/him)

Academic and research staff

Trained originally in mathematical physics at UMIST (Manchester), I continue to provide guidance and continuing support for my “Coupled Cluster Method” (CCM) code for simulating the properties of quantum magnetic systems. In 2001, my primary focus moved to medical research, where I use medical imaging, image processing & Artificial Intelligence, and data science in order to improve patient outcomes and experiences. I have worked at three hospitals in the UK (Royal Liverpool, Christie Hospital Manchester, and University Hospital Wales).

In 2014, I was appointed Lecturer (now Reader) in the School of Dentistry at Cardiff University / UHW. I have a wide breadth of activity, especially in terms of research support within the school (and beyond). Currently, lead supervisor for two PhD students on Deep Learning for the prediction of periodontal indices from dental radiographs and for the detection of lymph node cancers from histological images, respectively. I am the chair of the dental school research ethics committee (DSREC).

Published Books:

Click on the images above for links to the publisher's websites for these books.

Other Books:

Violence in England and Wales in 2016: An accident and emergency perspective. V. Sivarajasingam, D.J.J. Farnell, S. Moore, N. Page, and J. Shepherd (2018) (ISBN: 978-1-9995878-0-2)
Coupled Cluster Method Theories of Quantum Magnetism. R.F. Bishop, P.H.Y. Li, R. Zinke, and D.J.J. Farnell. Book accepted for publication as a volume in the Springer Series: Solid State Science.

2018

Farnell, D. J. J. et al. 2018. What's in a smile? Initial analyses of dynamic changes in facial shape and appearance. Journal of Imaging 5(1), article number: 2. (10.3390/jimaging5010002)
Farnell, D., Gotze, O., Schulenburg, J., Zinke, R., Bishop, R. and Li, P. 2018. Interplay between lattice topology, frustration, and spin quantum number in quantum antiferromagnets on Archimedean lattices. Physical Review B 98(22), article number: 224402. (10.1103/PhysRevB.98.224402)
Drage, N. A., Greenall, C. and Farnell, D. J. J. 2018. Ultrasound-guided fine-needle aspiration cytology of lesions in the head and neck performed without local anaesthesia – An analysis of pain perception. Ultrasound 26(4), pp. 222-228. (10.1177/1742271X18780137)
Mohd Nor, N. A., Chadwick, B. L., Farnell, D. J. J. and Chestnutt, I. G. 2018. The impact of a reduction in fluoride concentration in the Malaysian water supply on the prevalence of fluorosis and dental caries. Community Dentistry and Oral Epidemiology 46(5), pp. 492-499. (10.1111/cdoe.12407)
Farnell, D. J., Galloway, J., Zhurov, A., Richmond, S., Pirttiniemi, P. and Lahdesmaki, R. 2018. What’s in a smile? Initial results of multilevel principal components analysis of facial shape and image texture. Presented at: MUIA 2018: Annual Conference on Medical Image Understanding and Analysis, 9-11 July 2018, Southampton, UK Presented at Nixon, M., Mahmoodi, S. and Zwiggelaar, R. eds.Medical Image Understanding and Analysis: 22nd Conference, MIUA 2018, Southampton, UK, July 9-11, 2018, Proceedings. Communications in Computer and Information Science Springer pp. 177-188., (10.1007/978-3-319-95921-4_18)
Al-Kadhim, K. A. H., Pritchard, M., Farnell, D., Thomas, D. W., Adams, R. and Claydon, N. 2018. Surgical therapy for peri-implantitis management: a systematic review and meta-analysis. Oral Surgery 11(3), pp. 200-212. (10.1111/ors.12344)
Lynch, C., Farnell, D., Stanton, H., Chestnutt, I., Brunton, P. and Wilson, N. 2018. No more amalgams: Use of amalgam and amalgam alternative materials in primary dental. British Dental Journal 225, pp. 171-176. (10.1038/sj.bdj.2018.538)
Richmond, S. et al. 2018. Factors influencing facial shape. In: Evidence‐Based Orthodontics. Wiley, pp. 69-81., (10.1002/9781119289999.ch6)
Al Masan, A., Dummer, P., Farnell, D. and Vianna, M. 2018. Antibiotic-prescribing for endodontic therapies: a comparative survey between general dental practitioners (GDPs) and final-year Bachelor of Dental Surgery (BDS) students in Cardiff, UK. International Endodontic Journal 51(7), pp. 717-728. (10.1111/iej.12887)
Virdee, S. S., Seymour, D. W., Farnell, D., Bhamra, G. and Bhakta, S. 2018. Efficacy of irrigant activation techniques in removing intracanal smear layer and debris from mature permanent teeth: a systematic review and meta-analysis. International Endodontic Journal 51(6), pp. 605-621. (10.1111/iej.12877)
Adams, R., Hamid, L., Binney, A., Claydon, N., Farnell, D., Griffiths, B. and Thomas, D. 2018. A radiographic analysis of anatomical variation at the mandibular of intraoral bone harvesting. Oral Surgery 11(2), pp. 105-111. (10.1111/ors.12304)
Sivarajasingam, V., Farnell, D., Page, N., Moore, S. and Shepherd, J. 2018. Violence in England and Wales in 2017: An Accident and Emergency perspective. Cardiff: Cardiff University. Available at: https://www.cardiff.ac.uk/__data/assets/pdf_file/0019/1162414/National-Violence-Surveillance-Network-Report-2017.pdf

2017

Amanda, L., Drage, N., Christopher, G. and Farnell, D. 2017. An investigation in to the impact of acquisition location on error type and rate when undertaking panoramic radiography. Radiography 23(4), pp. 305-309. (10.1016/j.radi.2017.07.004)
Virdee, S., Seymour, D., Farnell, D., Bhamra, G. and Bhakta, S. 2017. Efficacy of irrigant activation techniques in removing intracanal smear layer and debris from mature permanent teeth: a systematic review and meta-analysis [Abstract]. International Endodontic Journal 50(S1), pp. 3-56. (10.1111/iej.12813)
Weightman, A., Farnell, D., Morris, D., Strange, H. and Hallam, G. 2017. A systematic review of information literacy programs in higher education: effects of faceto- face, online, and blended formats on student skills and views. Evidence Based Library and Information Practice 12(3), pp. 20-55. (10.18438/B86W90)
Amin A.H., A., Dummer, P. and Farnell, D. 2017. A comparative study of ProTaper Universal and ProTaper Next used by undergraduate students to prepare root canals. Journal of Endodontics 43(8), pp. 1364-1369. (10.1016/j.joen.2017.03.038)
Farnell, D., Galloway, J., Zhurov, A., Richmond, S., Katic, V. and Pirttiniemi, P. 2017. Initial results of multilevel principal components analysis of facial shape. Presented at: MIUA 2017: Annual Conference on Medical Image Understanding and Analysis, Edinburgh, UK, 11-13 July 2017 Presented at Valdes Hernandez, M. and Gonzalez Castro, V. eds.Medical Image Understanding and Analysis, Vol. 723. Communications in Computer and Information Science Cham: Springer pp. 674-685., (10.1007/978-3-319-60964-5_59)
Aleksenko, L., Tettey, Y., Gyasi, R., Obed, S., Farnell, D. and Quaye, I. K. 2017. Maternal demographic and placental risk factors in term low birth weight in Ghana. Journal of Pregnancy and Child Health 4(3), article number: 1000325. (10.4172/2376-127X.1000325)
Cockle, K. et al. 2017. The EAGLE study: improving the wellbeing of men by evaluating and addressing the gastrointestinal late effects of radical treatment for prostate cancer.. Presented at: 4th International Clinical Trials Methodology Conference (ICTMC) and the 38th Annual Meeting of the Society for Clinical Trials, Liverpool, UK., 07–10 May 2017Trials, Vol. 18(S1). Vol. P294. BioMed Central pp. 111-112., (10.1186/s13063-017-1902-y)
Bishop, R. F., Li, P., Zinke, R., Darradi, R., Richter, J., Farnell, D. and Schulenburg, J. 2017. The spin-half XXZ antiferromagnet on the square lattice revisited: A high-order coupled cluster treatment. Journal of Magnetism and Magnetic Materials 428, pp. 178-188. (10.1016/j.jmmm.2016.11.043)

2016

Taylor, S. et al. 2016. The three-item ALERT-B questionnaire provides a validated screening tool to detect chronic gastrointestinal symptoms after pelvic radiotherapy in cancer survivors. Clinical Oncology 28(10), pp. e139-e147. (10.1016/j.clon.2016.06.004)
Taylor, S. et al. 2016. Improving the well-being of men by Evaluating and Addressing the Gastrointestinal Late Effects (EAGLE) of radical treatment for prostate cancer: study protocol for a mixed-method implementation project. British Medical Journal Open 6(10), article number: e011773. (10.1136/bmjopen-2016-011773)
Popat, H., Thomas, K. and Farnell, D. J. J. 2016. Management of orthodontic emergencies in primary care – self-reported confidence of general dental practitioners. British Dental Journal 221, pp. 21-24. (10.1038/sj.bdj.2016.495)
Farnell, D. J. J., Popat, H. and Richmond, S. 2016. Multilevel principal component analysis (mPCA) in shape analysis: a feasibility study in medical and dental imaging. Computer Methods and Programs in Biomedicine 129, pp. 149-159. (10.1016/j.cmpb.2016.01.005)
Farnell, D., Richter, J. and Oliver, G. 2016. Ground-state ordering of the J1 - J2 model on the simple cubic and body-centered cubic lattices. Physical Review B 93, article number: 235123. (10.1103/PhysRevB.93.235123)
Taylor, S. E. et al. 2016. Late effects of pelvic radiation treatment (EAGLE study) [Abstract]. Journal of Clinical Oncology 34(3), pp. 159. (10.1200/jco.2016.34.3_suppl.159)
Goetze, O., Richter, J., Zinke, R. and Farnell, D. 2016. Ground-state properties of the triangular-lattice Heisenberg antiferromagnet with arbitrary spin quantum number s. Journal of Magnetism and Magnetic Materials 397, pp. 333-341. (10.1016/j.jmmm.2015.08.113)

2015

Robson, N., Popat, H., Richmond, S. and Farnell, D. J. J. 2015. Effectiveness of an audience response system on orthodontic knowledge retention of undergraduate dental students - a randomised control trial. Journal of Orthodontics 42(4), pp. 307-314., article number: 1465313315Y.000. (10.1179/1465313315Y.0000000012)
Johnson, I. G. et al. 2015. Approaches for adult nursing and residential care homes on promoting oral health, preventing dental health problems and ensuring access to dental treatment: Draft Review 3: Barriers and Facilitators. Project Report. [Online]. Cardiff: Cardiff University. Available at: https://www.nice.org.uk/guidance/GID-PHG62/documents/evidence-review-4
Morgan, F. et al. 2015. Approaches for adult nursing and residential care homes on promoting oral health, preventing dental health problems and ensuring access to dental treatment. Draft Review 2: Best Practice. Project Report. [Online]. Cardiff: Cardiff University. Available at: https://www.nice.org.uk/guidance/GID-PHG62/documents/evidence-review-3
Weightman, A. L. et al. 2015. Approaches for adult nursing and residential care homes on promoting oral health, preventing dental health problems and ensuring access to dental treatment. Draft Review 1: Effectiveness. Project Report. [Online]. Cardiff: Cardiff University. Available at: https://www.nice.org.uk/guidance/GID-PHG62/documents/evidence-review
Richter, J., Zinke, R. and Farnell, D. J. J. 2015. The spin-1/2 square-lattice J1-J2 model: the spin-gap. European Physical Journal B Condensed Matter Physics 88(2), pp. 1-6. (10.1140/epjb/e2014-50589-x)
Weightman, A. L., Farnell, D. J. J., Morris, D. and Strange, H. 2015. Information literacy teaching in Universities - a systematic review of evaluation studies: Preliminary findings for online versus traditional methods. Presented at: Evidence Based Library and Information Practice Conference (EBLIP8), Brisben, Queensland, Australia, 6-8 July 2015.

2014

Farnell, D. J. J., Götze, O., Richter, J., Bishop, R. F. and Li, P. H. Y. 2014. Quantum s=1/2 antiferromagnets on Archimedean lattices: The route from semiclassical magnetic order to nonmagnetic quantum states. Physical Review B: Condensed Matter and Materials Physics 89(18), article number: 184407. (10.1103/PhysRevB.89.184407)
Little, A., Farnell, D. J. J. and Jones, M. 2014. Evaluation of a questionnaire to measure the impact of mathematics masterclasses at the University of South Wales. Working paper. Unpublished.

2013

Richter, J., Goetze, O., Zinke, R., Farnell, D. J. J. and Tanaka, H. 2013. The magnetization process of the spin-one triangular-lattice Heisenberg antiferromagnet. Journal of the Physical Society of Japan 82(1), article number: 15002. (10.7566/JPSJ.82.015002)

2012

Li, P. H. Y., Bishop, R. F., Campbell, C. E., Farnell, D. J. J., Goetze, O. and Richter, J. 2012. Spin-1/2 Heisenberg antiferromagnet on an anisotropic kagome lattice. Physical Review B: Condensed Matter and Materials Physics 86, article number: 214403.
Li, P. H. Y., Bishop, R. F., Farnell, D. J. J. and Campbell, C. E. 2012. Phase diagram of a frustrated Heisenberg antiferromagnet on the honeycomb lattice: The J(1)-J(2)-J(3) model. Physical Review B: Condensed Matter and Materials Physics 86(14), article number: 144404. (10.1103/PhysRevB.86.144404)
Bishop, R. F., Li, P. H. Y., Farnell, D. J. J. and Campbell, C. E. 2012. The frustrated Heisenberg antiferromagnet on the honeycomb lattice: J(1)-J(2) model. Journal of Physics: Condensed Matter 24(23), article number: 236002. (10.1088/0953-8984/24/23/236002)
Barraclough, L. H., Routledge, J. A., Farnell, D. J. J., Burns, M. P., Swindell, R., Livsey, J. E. and Davidson, S. E. 2012. Prospective analysis of patient-reported late toxicity following pelvic radiotherapy for gynaecological cancer. Radiotherapy and Oncology 103(3), pp. 327-332. (10.1016/j.radonc.2012.04.018)
Bishop, R. F., Li, P. H. Y., Farnell, D. J. J., Richter, J. and Campbell, C. E. 2012. Frustrated Heisenberg antiferromagnet on the checkerboard lattice: J(1)-J(2) model. Physical Review B: Condensed Matter and Materials Physics 85(20), article number: 205122. (10.1103/PhysRevB.85.205122)

2011

Goetze, O., Farnell, D. J. J., Bishop, R. F., Li, P. H. Y. and Richter, J. 2011. Heisenberg antiferromagnet on the kagome lattice with arbitrary spin: A higher-order coupled cluster treatment. Physical Review B: Condensed Matter and Materials Physics 84(22), article number: 224428. (10.1103/PhysRevB.84.224428)
Farnell, D. J. J., Pickles, A. and Roberts, C. 2011. Measurement error in statistical models of shape. Computer Methods and Programs in Biomedicine 104(3), pp. E29-E44., article number: http://dx.doi.org/10.1016/j.cmpb.2011.04.002. (10.1016/j.cmpb.2011.04.002)
Farnell, D. J. J., Darradi, R., Schmidt, R. and Richter, J. 2011. Spin-half Heisenberg antiferromagnet on two archimedian lattices: From the bounce lattice to the maple-leaf lattice and beyond. Physical Review B: Condensed Matter and Materials Physics 84(10), article number: 104406. (10.1103/PhysRevB.84.104406)
Farnell, D. J. J., Bishop, R. F., Li, P. H. Y., Richter, J. and Campbell, C. E. 2011. Frustrated Heisenberg antiferromagnet on the honeycomb lattice: A candidate for deconfined quantum criticality. Physical Review B: Condensed Matter and Materials Physics 84(1), article number: 12403. (10.1103/PhysRevB.84.012403)

2010

Ho, K. F., Farnell, D. J. J., Routledge, J. A., Burns, M. P., Sykes, A. J., Slevin, N. J. and Davidson, S. E. 2010. Comparison of patient-reported late treatment toxicity (LENT-SOMA) with quality of life (EORTC QLQ-C30 and QLQ-H&N35) assessment after head and neck radiotherapy. Radiotherapy and Oncology 97(2), pp. 270-275. (10.1016/j.radonc.2010.01.017)
Bishop, R. F., Li, P. H. Y., Farnell, D. J. J. and Campbell, C. E. 2010. Magnetic ordering of antiferromagnets on a spatially anisotropic triangular lattice. International Journal of Modern Physics B 24(25-26), pp. 5011-5026. (10.1142/S021797921005716X)
Farnell, D. J. J. et al. 2010. Development of a patient-reported questionnaire for collecting toxicity data following prostate brachytherapy. Radiotherapy and Oncology 97(1), pp. 136-142.
Bishop, R. F., Li, P. H. Y., Farnell, D. J. J. and Campbell, C. E. 2010. Magnetic order in a spin-1/2 interpolating kagome/square Heisenberg antiferromagnet. Physical Review B: Condensed Matter and Materials Physics 82(10), article number: 104406. (10.1103/PhysRevB.82.104406)
Bishop, R. F., Li, P. H. Y., Farnell, D. J. J. and Campbell, C. E. 2010. Magnetic order on a frustrated spin-1/2 Heisenberg antiferromagnet on the Union Jack lattice. Physical Review B: Condensed Matter and Materials Physics 82(2), article number: 24416. (10.1103/PhysRevB.82.024416)
Richter, J., Darradi, R., Schulenburg, J., Farnell, D. J. J. and Rosner, H. 2010. Frustrated spin-1/2 J(1)-J(2) Heisenberg ferromagnet on the square lattice studied via exact diagonalization and coupled-cluster method. Physical Review B: Condensed Matter and Materials Physics 81(17), article number: 174429. (10.1103/PhysRevB.81.174429)
Mehta, J., Farnell, D. J. J., Stappler, T., Liazos, E. and Wong, D. 2010. Perception of tilt following counter-rotation surgery. Clinical and Experimental Ophthalmology 38(3), pp. 284-291. (10.1111/j.1442-9071.2010.02235.x)
Farnell, D. J. J. et al. 2010. Efficacy of data capture for patient-reported toxicity following radiotherapy for prostate or cervical cancer. European Journal of Cancer 46(3), pp. 534-540.
Farnell, D. J. J. and Parkinson, J. 2010. An introduction to quantum spin systems. Lecture Notes in Physics Vol. 816. Springer Verlag. (10.1007/978-3-642-13290-2)

2009

Farnell, D. J. J., Zinke, R., Schulenburg, J. and Richter, J. 2009. High-order coupled cluster method study of frustrated and unfrustrated quantum magnets in external magnetic fields. Journal of Physics: Condensed Matter 21(40), article number: 406002. (10.1088/0953-8984/21/40/406002)
Ho, K. F., Farnell, D. J. J., Routledge, J. A., Burns, M. P., Sykes, A. J., Slevin, N. J. and Davidson, S. E. 2009. Developing a CTCAEs patient questionnaire for late toxicity after head and neck radiotherapy. European Journal of Cancer 45(11), pp. 1992-1998., article number: http://dx.doi.org/10.1016/j.ejca.2009.04.010. (10.1016/j.ejca.2009.04.010)
Barker, C. L., Routledge, J. A., Farnell, D. J. J., Swindell, R. and Davidson, S. E. 2009. The impact of radiotherapy late effects on quality of life in gynaecological cancer patients. British Journal of Cancer 100(10), pp. 1558-1565. (10.1038/sj.bjc.6605050)
Bishop, R. F., Li, P. H. Y., Farnell, D. J. J. and Campbell, C. E. 2009. Magnetic order in a spin-1/2 interpolating square-triangle Heisenberg antiferromagnet. Physical Review B: Condensed Matter and Materials Physics 79(17), article number: 174405. (10.1103/PhysRevB.79.174405)
Farnell, D. J. J., Richter, J., Zinke, R. and Bishop, R. F. 2009. High-Order Coupled Cluster Method (CCM) calculations for quantum magnets with valence-bond ground states. Journal of Statistical Physics 135(1), pp. 175-198. (10.1007/s10955-009-9703-7)
Farnell, D. J. J. 2009. High-order coupled cluster method calculations of spontaneous symmetry breaking in the spin-half one-dimensional J(1)-J(2) model. Condensed Matter Physics 12(3), pp. 411-428. (10.5488/CMP.12.3.411)

2008

Farnell, D. J. J., Hatfield, F. N., Knox, P., Reakes, M., Spencer, S., Parry, D. and Harding, S. P. 2008. Enhancement of blood vessels in digital fundus photographs via the application of multiscale line operators. Journal of the Franklin Institute 345(7), pp. 748-765. (10.1016/j.jfranklin.2008.04.009)
Farnell, D. J. J. and Bishop, R. F. 2008. Odd and even behavior with LSUBm approximation level in high-order coupled cluster method (CCM) calculations. International Journal of Modern Physics B 22(20), pp. 3369-3379. (10.1142/S021797920803999X)
Wong, D., Liazos, S., Mehta, J. and Farnell, D. J. J. 2008. Macular translocation surgery: computer simulation of visual perception. Graefe's Archive for Clinical and Experimental Ophthalmology 246(6), pp. 831-836. (10.1007/s00417-008-0771-1)

2007

Allen, P. D. et al. 2007. Detecting reduced bone mineral density from dental radiographs using statistical shape models. Ieee Transactions on Information Technology in Biomedicine 11(6), pp. 601-610. (10.1109/TITB.2006.888704)
Cracknell, K. P. B., Farnell, D. J. J. and Grierson, I. 2007. Monte Carlo simulation of latanoprost induced iris darkening. Computer Methods and Programs in Biomedicine 87(2), pp. 93-103. (10.1016/j.cmpb.2007.04.010)
Allen, P. D. et al. 2007. Detecting osteoporosis from dental radiographs using active shape models. Presented at: Biomedical Imaging: From Nano to Macro, 2007. ISBI 2007. 4th IEEE International Symposium, Arlington, VA, 12-15 April 2007Biomedical Imaging: From Nano to Macro, 2007. ISBI 2007. 4th IEEE International Symposium. pp. 1256-1259., (10.1109/ISBI.2007.357087)

2006

Kruger, S. E., Darradi, R., Richter, J. and Farnell, D. J. J. 2006. Direct calculation of the spin stiffness of the spin-12 Heisenberg antiferromagnet on square, triangular, and cubic lattices using the coupled-cluster method. Physical Review -Series B- 73(9), article number: 94404. (10.1103/PhysRevB.73.094404)

2005

Farnell, D. J. J., Schulenburg, J., Richter, J. and Gernoth, K. A. 2005. High-order coupled cluster calculations via parallel processing: An illustration for CaV4O9. Physical Review -Series B- 72(17), article number: 172408. (10.1103/PhysRevB.72.172408)
Darradi, R., Richter, J. and Farnell, D. J. J. 2005. Coupled cluster treatment of the Shastry-Sutherland antiferromagnet. Physical Review -Series B- 72(10), article number: 104425.
Farnell, D. J. J., David, T. and Barton, D. C. 2005. Numerical model of self-propulsion in a fluid. Journal of the Royal Society Interface 2(2), pp. 79-88. (10.1098/rsif.2005.0027)
Yang, J., Farnell, D. J. J., Devlin, H., Horner, K. and Graham, J. 2005. The effect of ovariectomy on mandibular cortical thickness in the rat. Journal of Dentistry 33(2), pp. 123-129. (10.1016/j.jdent.2004.09.001)
Darradi, R., Richter, J. and Farnell, D. J. J. 2005. Influence of the spin quantum number s on the zero-temperature phase transition in the square-lattice J-J' model. Journal of Physics: Condensed Matter 17(2), pp. 341-350. (10.1088/0953-8984/17/2/009)
Farnell, D. J. J. 2005. Automatic optic disk location in digital fundus images using active appearance models. Investigatiove Ophthamology & Visual Science 46, pp. 4272-4272.
Knox, P. C., Hatfield, F. N. and Farnell, D. J. J. 2005. Automated analysis of the retinal vascular tree - parameterised data from healthy eyes. Investigative Ophthalmology and Visual Science 46, pp. 4288.

2004

Farnell, D. J. J., David, T. and Barton, D. C. 2004. Coupled states of flapping flags. Journal of Fluids and Structures 19(1), pp. 29-36. (10.1016/j.jfluidstructs.2003.10.001)
Farnell, D. J. J., David, T. and Barton, D. C. 2004. Numerical simulations of a filament in a flowing soap film. International Journal for Numerical Methods in Fluids 44(3), pp. 313-330. (10.1002/fld.640)
Schollwoeck, U., Richter, J. and Farnell, D. J. J. eds. 2004. Quantum magnetism. Lecture Notes in Physics Vol. 645. Berlin: Springer Verlag.

2003

Kruger, S. E., Farnell, D. J. J. and Richter, J. 2003. Coupled cluster treatments of quantum magnets: two examples. International Journal of Modern Physics B 17(28), pp. 5347-5365. (10.1142/S0217979203020478)
Farnell, D. J. J. 2003. Density matrix renormalization group calculations for two-dimensional lattices: Application to the spin-half and spin-one square-lattice Heisenberg models. Physical Review B 68, article number: 134419. (10.1103/PhysRevB.68.134419)

2002

Farnell, D. J. J., Bishop, R. F. and Gernoth, K. A. 2002. Coupled cluster method calculations of quantum magnets with spins of general spin quantum number. Journal of Statistical Physics 108(3-4), pp. 401-428. (10.1023/A:1015769622279)
Ivanov, N. B., Richter, J. and Farnell, D. J. J. 2002. Magnetic phases of the mixed-spin J1-J2 Heisenberg model on a square lattice. Physical Review B 66, article number: 14421. (10.1103/PhysRevB.66.014421)

2001

Farnell, D. J. J., Gernoth, K. A. and Bishop, R. F. 2001. High-order coupled-cluster method for general spin-lattice problems: an illustration via the anisotropic Heisenberg model. Physical Review-B 64, article number: 172409.
Farnell, D. J. J., Bishop, R. F. and Gernoth, K. A. 2001. Coupled cluster treatment of an interpolating triangle-kagomé antiferromagnet. Physical Review B 63, article number: 220402. (10.1103/PhysRevB.63.220402)
Bishop, R. F. and Farnell, D. J. J. 2001. High-order coupled cluster results for quantum antiferromagnets and their phase transitions. International Journal of Modern Physics B 15(10-11), pp. 1385-1388. (10.1142/S021797920100588X)
Bishop, R. F. and Farnell, D. J. J. 2001. Marshall-peierls sign rules, the quantum Monte Carlo method, and frustration. International Journal of Modern Physics B 15(10-11), pp. 1736-1739. (10.1142/S0217979201006264)

2000

Bishop, R. F., Farnell, D. J. J. and Ristig, M. L. 2000. Ab initio treatments of the Ising model in a transverse field. International Journal of Modern Physics B 14(15), pp. 1517-1536. (10.1142/S0217979200001618)
Kruger, S. E., Richter, J., Schulenburg, J., Farnell, D. J. J. and Bishop, R. F. 2000. Quantum phase transitions of a square-lattice Heisenberg antiferromagnet with two kinds of nearest-neighbour bonds: a high-order coupled-cluster treatment. Physical Review-B 61, pp. 14607. (10.1103/PhysRevB.61.14607)
Bishop, R. F., Farnell, D. J. J. and Parkinson, J. B. 2000. Sign rules for anisotropic quantum spin systems. Physical Review-B 61, pp. 6775. (10.1103/PhysRevB.61.6775)
Bishop, R. F., Farnell, D. J. J., Kruger, S. E., Parkinson, J. B., Richter, J. and Zeng, C. 2000. High-order coupled cluster method calculations for the ground- and excited-state properties of the spin-half XXZ model. Journal of Physics: Condensed Matter 12(30), pp. 6887-6902. (10.1088/0953-8984/12/30/317)
Bishop, R. F. and Farnell, D. J. J. 2000. Symmetry and its breaking: quantum phase transitions via the coupled cluster method. Presented at: 23rd International Workshop on Condensed Matter Theories, Ithaca, Greece, 17-23 June 1999 Presented at Anagnostatos, G. S. ed.Condensed Matter Theories, Vol. 15. Huntington, NY: Nova Science Publishers pp. 57-66.
Bishop, R. F., Farnell, D. J. J. and Ristig, M. L. 2000. The Ising model in a transverse magnetic field: a test-bed for many-body theories. Presented at: 22nd International Workshop on Condensed Matter Theories, Nashville, Tennessee, 1-6 June 1998 Presented at Ernst, D. J., Perakis, I. E. and Umar, A. S. eds.Condensed Matter Theories, Vol. 14. Huntington, NY: Nova Science Publishers pp. 191-198.

1999

Bishop, R. F. and Farnell, D. J. J. 1999. Ab initio calculations for the square-lattice anisotropic Heisenberg model. International Journal of Modern Physics B 13(5-6), pp. 709-719. (10.1142/S0217979299000606)
Bishop, R. F., Farnell, D. J. J. and Zeng, C. 1999. Ab initio simulation of the nodal surfaces of Heisenberg antiferromagnets. Physical Review-B 59, article number: 1000. (10.1103/PhysRevB.59.1000)

1998

Bishop, R. F., Farnell, D. J. J. and Parkinson, J. B. 1998. Phase transitions in the spin-half J1-J2 model. Physical Review-B 58(10), pp. 6394-6402. (10.1103/PhysRevB.58.6394)
Zeng, C., Farnell, D. J. J. and Bishop, R. F. 1998. An efficient implementation of high-order coupled-cluster techniques applied to quantum magnets. Journal of Statistical Physics 90(1-2), pp. 327-361. (10.1023/A:1023220222019)
Bishop, R. F. and Farnell, D. J. J. 1998. An ab initio coupled cluster theory of quantum spin lattices and their quantum critical behaviour. Molecular Physics 94(1), pp. 73-85.
Bishop, R. F. and Farnell, D. J. J. 1998. Accurate coupled cluster calculations of general quantum antiferromagnets: an example on a frustrated lattice. Presented at: 21st International Workshop on Condensed Matter Theories, Luso, Portugal, 22-26 September 1997 Presented at da Providencia, J. and Malik, F. B. eds.Condensed Matter Theories, Vol. 13. Commack, NY: Nova Science Publishers pp. 21-43.

1997

Farnell, D. J. J., Kruger, S. E. and Parkinson, J. B. 1997. Coupled-cluster treatment of the XY-model. Journal of Physics: Condensed Matter 9(36), pp. 7601-7608.

1996

Bishop, R. F., Farnell, D. J. J. and Parkinson, J. B. 1996. The coupled-cluster method applied to the XXZ model using a planar model state. Journal of Physics: Condensed Matter 8(50), pp. 11153-11165. (10.1088/0953-8984/8/50/038)

1995

Burshill, R., Gehring, G. A., Farnell, D. J. J., Parkinson, J. B., Xiang, T. and Zeng, C. 1995. Numerical and approximate analytical results for the frustrated spin-1/2 quantum spin chain. Journal of Physics: Condensed Matter 7(45), pp. 8605-8618.

1994

Farnell, D. J. J. and Parkinson, J. B. 1994. A coupled-cluster treatment of spin-1/2 systems with nearest-neighbour and next-nearest-neighbour interactions. Journal of Physics: Condensed Matter 6(28), pp. 5521-5532. (10.1088/0953-8984/6/28/024)

Overview

My research falls into a number of themes: quantum many-body theory & quantum magnetism; violence research; biostatistics & data science; and, image or signal processing and AI. Some research projects are listed below...

Quantum Magnetism & The Coupled Cluster Method (CCM)

The CCM is a powerful, accurate, and versatile method of quantum many-body theory. Click here to access a high-order CCM code for lattice quantum spin systems at T = 0 that has been develped by myself and Dr. Joerg Schulenburg (Otto-von-Guericke University Magdeburg, Germany)

Violence Research: National Violence Surveillance Network

The National Violence Surveillance Network has over 100 (types 1, 2 and 4) Emergency Departments in England and Wales providing data on violence-related attendances on an annual basis. Data are retrieved by attendance date, age group and gender, and used for study of rates and trends in violence.

The aims of this project are to:

study trends in community violence in England and Wales from an injury perspective
complement two other national violence sources: Crime Survey of England and Wales Police Records.

Violence Research: Improving Bruise Evidence & Pathways for Victims of Violence

DermLite Lumio GL dermatoscope. Another grant application, recently submitted to the *MRC*, will focus on the development of a complex intervention to improve pathways after bruise detection.

We were recipients in Dec. 2023 of a seedcorn grant from the Security, Crime and Intelligence Innovation Institute (SCIII) at Cardiff University for a study using DermLite dematoscopes to investigate bruising across a varieties of skin tones. Lead applicant: Dr. Sam Evans. This follows on also from Dr. Evans's PhD on bruise imaging and the analysis of paediatric reporting procedures for measuring and recording bruises.

Biostatistics & Data Science: Cancer PROMS

Prostate cancer survival is improving. Indeed, it has tripled in the last 40 years in the UK. The EAGLE study focuses on the early identification and management of radiotherapy-induced bowel symptoms after radiotherapy of prostate cancer, with the aim of improving the quality of life of prostate cancer survivors and their partners and/or families. For more information, please see:

Taylor, et al. Clinical Oncology 28(10), Pages e139–e147 (2016) DOI: 10.1016/j.clon.2016.06.004
Taylor et al. BMJ Open 6. Article: e011773 (2016) DOI: 10.1136/bmjopen-2016-011773
Farnell, et al. Clinical Translational Radiation Oncology 21, 98–103 (2020) DOI: 10.1016/j.ctro.2020.02.002
Staffurth, et al. Accepted by Plos One (May 2024).

Other research in cancer PROMS (LENT / SOMA questionnaires) for "late effects" after radiotherapy:

Barker et al. British Journal of Cancer 100, 1558-1565 (2009). DOI: 10.1038/sj.bjc.6605050
Ho et al. European Journal of Cancer 45, 1992-1998 (2009). DOI: 10.1016/j.ejca.2009.04.010
Ho et al., Radiotherapy and Oncology 97, 270-275, (2010). DOI: 10.1016/j.radonc.2010.01.017
Farnell et al., Radiotherapy and Oncology 97(1), 136-142 (2010). DOI: 10.1016/j.radonc.2010.05.011
Baraclough et al. Radiotherapy and Oncology 102, 327-332 (2012). DOI: 10.1016/j.radonc.2012.04.018

Biostatistics & Data Science: COVID Bereavement Study

This national study aims to investigate the grief experiences, support needs and use of bereavement support by people bereaved during the pandemic in the UK, and the adaptations, challenges and innovation involved in delivering bereavement support. It is being conducted by a team of researchers at Cardiff University and the University of Bristol, with funding from UKRI via the Economic and Social Research Council.

For more information, please see the study website: www.covidbereavement.com. See also the following TV news interviews with Dr. Lucy Selman: ITV News https://youtu.be/Z5hDtmEkrnM & Sky News https://youtu.be/02MWuVs3PMM.

Image Processing and AI: ARIA Dataset

The ARIA dataset is collection of retinal images collected as part of the Automated Retinal Image Analysis (ARIA) project at St. Paul’s Eye Unit, Liverpool, UK (2004 -2006) by myself and my team of photographers. Subjects were adult males and females in three broad groups: healthy (control group), age-related macular degeneration (AMD), and diabetic. (Available on demand.)

Image Processing & AI: 3D Surface Imaging & Shape Modelling

Multilevel multivariate multiple regression code (e.g., mPLSR) to model (in MATLAB) how the competing the effects of sex, age, genes, BMI, environment, etc. affect facial shape and to investigate facial dynamics. This research was used to explore facial changes in school children from 11 to 18 years old. It showed also that there are seven phases to a smile!

3D image capture (white dots) via a 3DMD camera. Model (blue dots and lines) via multilevel functional PCA code developed by DJJF. This work has been supported by travel funding from the *London Mathematical Society (LMS)* and the *"Taith" International Exchange Programme.*

Image Processing & AI: Eye Tracking and Patient Information Leaf Design

In a study that we ran at Cardiff University, eye tracking supported free-text comments that showed the importantance of use of images to convey complex information. Fixation times on specific questions were higher for those subjects that were answered correctly in the quiz, although this effect was generally not significant (P > 0.05).

Image capture via a Tobii Pro Nano. This research was supported by an Innovation Grant from the *Institute of Physics and Engineering in Medicine (IPEM).*

DET031 Research Methods (Postgraduate students) Module leader (2014-present).
Postgraduate Dental Professionalism (Postgraduate students) Module leader (2017-2021).
Citing and Referencing (Plagiarism) Training (Postgraduate students).
2.5-hour session on literature reviews and systematic review (Postgraduate orthodontics students; 2014-present).
Academic Tutor (2nd-year dental undergraduate students).
Assessor of 2nd-year poster presentations and 3rd-year oral presentations in the school of dentistry (2014-2022).
Masters of Orthodontics Student Research Project Supervision (2014-present).

Honours and awards

Finalists for the ESRC Celebrating Impact Prize 2023 (part of the ESRC Festival of Social Science) for the COVID bereavement study. Entrants: Dr Emily Harrop, Cardiff University; Dr Lucy Selman, University of Bristol. (Dr. Renata Medeiros Mirra and I provided research design guidance and statistical analyses for this project.) www.ukri.org/who-we-are/how-we-are-doing/research-outcomes-and-impact/esrc/
Most Engaging Staff Member in the Enriching Student Life Award: (nominated) Cardiff University Students Union (March 2023).
Fellow of the Higher Education Academy (FHEA) (awarded September 2021).
Jesse H. Shera Award for Distinguished Published Research (2018) from the Research Round Table of the American Library Association for a systematic review of information literacy programs in higher education: Effects of face-to-face, online and blended formats on student skills and views.
ESE Wladimir Adlivankine Research Prize, European Society of Endodontology (2017) for a paper on “Efficacy of irrigant activation techniques in removing intracanal smear layer and debris from mature permanent teeth: a systematic review & meta-analysis”.
Poster prize awarded at the 5045 Wilhelm und Else Heraeus-Seminar (2012) for a poster on the “Ground-state phase structure of the spin-1/2 anisotropic planar pyrochlore model”.

Professional memberships

Fellow of the Higher Education Academy (www.advance-he.ac.uk) (FHEA)
Institute of Physics (www.iop.org) (MInstP)
Institute of Physics and Engineering in Medicine (www.ipem.ac.uk) (MIPEM)
London Mathematical Society (www.lms.ac.uk)

Academic positions

Reader of Applied Mathematics (From 2023); Senior Lecturer of Applied Mathematics (2017-2023); Lecturer of Medical Statistics (2014-2017): School of Dentistry, Cardiff University.
Senior Lecturer of Mathematics (2011-2014): Division of Mathematics and Statistics, University of South Wales.
Research Statistician: Health Methodology Research Group, University of Manchester, (2009-2011); Academic Department of Radiation Oncology (ADRO), the Christie Hospital, University of Manchester (2007-2009).
Lecturer in Ophthalmic Imaging (2003-2006): St. Paul’s Eye Unit, Royal Liverpool University Hospital Trust & University of Liverpool.
Post-Doctoral Research Associate (1995-2003): Imaging Science and Biomedical Engineering (ISBE), University of Manchester; School of Mechanical Engineering, University of Leeds, UK. Universities of Manchester, UK; Ludwig Maximillian’s University, Munich, Germany; University of Cologne, Germany.

Speaking engagements

Since 2017:

High-Order Coupled Cluster Method (CCM): Phase Diagrams of Kitaev-Heisenberg-Type Models at Zero Temperature. D.J.J. Farnell. Oral Presentation at Current Research in Magnetism (CRIM): Quantum Magnetism in Low-Dimensional Systems (IOP conference; 27 September 2024).
Evolution of High-Order Coupled Cluster Method Calculations for Quantum Magnetic Systems. D.J.J. Farnell. Invited Oral Presentation at a Workshop on Methods for Static and Dynamic Properties of Correlated Quantum Matter (2 September 2024 - 3 September 2024).
Multilevel FPCA Models of Dynamical Changes in 3D Shapes. D.J.J. Farnell. Invited Oral Presentation, Medical Imaging Research Centre, KU Leuven, Belgium (July 2024).
Image Analysis of Bruises in Child Maltreatment. S.T Evans, D.J.J. Farnell, & A. Carson-Stevens. Oral Presentation by Dr. Sam Evans at the 17th International Conference of the European Scientific Association on Residential and Family Care for Children and Adolescents (EUSARF). DOI: 10.13140/RG.2.2.25097.62564
The Coupled Cluster Method Applied to Quantum Magnetism. Invited Oral Presentation by D.J.J. Farnell from Dr Ioannis Rousochatzakis, School of Physics, Loughborough University (Feb. 2023). DOI: 10.13140/RG.2.2.20904.96006
3D Facial Surface Imaging in Dentistry and Beyond. Poster at Medical Image Understanding and Analysis (MIUA). July 2022. (www.researchgate.net/publication/361764525_3D_Facial_Surface_Imaging_in_Dentistry_and_Beyond)
An Overview of the Dental Data Science Research Group. Presentation by D.J.J. Farnell at the R&D day for the school of dentistry at Cardiff University. May 2022.
Orthodontics and 3D Imaging & Multivariate Statistical Models of Shape. Oral “vlunch” presentation (online via MS Teams) presentation by D.J.J. Farnell to the visual computing research group, school of computer science and informatics, Cardiff University. January 2021)
Analysis of the Blue Book Records. Oral presentation (online via Zoom) at Burwalls: For Teachers of Medical Statistics. (Co-organiser of this meeting.) July 2020.
Multilevel Models of Age-Related Changes in Facial Shape in Adolescents. Poster presentation by D.J.J. Farnell at the University Hospital Wales, R&D Conference. October 2019. Cardiff City Stadium.
Quantum Magnetism. Informal presentation given to members of the frustrated magnetism group, School of Physics and Astronomy, Cardiff University. October 2019.
Multilevel Models of Age-Related Changes in Facial Shape in Adolescents. Poster presentation by D.J.J. Farnell at the British Society for Oral and Dental Research (BSODR) annual meeting. September 2019.
Multilevel Models of Age-Related Changes in Facial Shape in Adolescents. Oral presentation by D.J.J. Farnell at the Medical Image Understanding and Analysis (MIUA) July 2019.
The Use of Flipped Learning in Teaching a Postgraduate Research Methods Module: The Pros and Cons. Dr Damian Farnell. Burwalls: For Teachers of Medical Statistics. University of East Anglia (8th-10th, July 2019). Oral Presentation by D.J.J. Farnell.
Multilevel Principal Components Analysis (mPCA) of Facial Shape and Image Texture. Invited Oral Presentation by D.J.J. Farnell, KU Leuven, Belgium (Friday 3rd May 2019).
Flipped learning – experiencing the pros and cons for inverted learning. Dr DJJ Farnell and Mrs R Jones. Association of Science Educators in Dentistry (ASEID), Cardiff University (April 2019).
What’s in a Smile? Initial Results of Multilevel Principal Components Analysis of Facial Shape and Image Texture. Oral presentation by D.J.J. Farnell at the Medical Image Understanding and Analysis (MIUA) July 2018.
What’s in a Smile? Multilevel Models of Facial Shape and Appearance. Dental School R&D day, Cardiff University (May 2017). Oral Presentation by D.J.J. Farnell.
Emergence of magnetic order in kagome antiferromagnets: The role of next-nearest-neighbor bonds Johannes Richter, Patrick Müller, Oliver Götze, Damian Farnell, Heinz-Jürgen Schmidt Strongly Correlated Electron Systems, SCES (July 2017). Poster presentation.
Monte Carlo Methods and Teaching Biostatistics. Burwalls: For Teachers of Medical Statistics. (July 2017). http://burwalls.org.uk/wp/?page_id=456. Oral Presentation by D.J.J. Farnell.
A systematic review of information literacy programs in higher education: Effects of face-to-face, online and blended formats on student skills and views. Alison L. Weightman, Delyth Morris, Heather Strange, Gillian Hallam, and Damian J.J. Farnell. One-day meeting at Cardiff University “To Tech or Not to Tech” (CUSEIP, July 2017). Lightning presentation and poster by D.J.J. Farnell.
Initial Results of Multilevel Principal Components Analysis of Facial Shape, DJJ Farnell, J Galloway, A Zhurov, S Richmond, P Perttiniemi, and V Katic. Poster presentation at the Cardiff and Vale University Health Board R&D Day by D.J.J. Farnell, 13th June 2017. ibid. Poster presentation by D.J.J. Farnell at the Medical Image Understanding and Analysis (MIUA) July 2017.
Oral Health Improves, But Inequalities Remain for Children in Wales. Oral presentation by D.J.J. Farnell at the International Association for Dental Research, General Meeting (San Francisco, March 2017).

Committees and reviewing

Dental School Research Ethics Comittee (Chair)

Current supervision

Yahia Khubrani

Research student

Burhan Anis

Research student

Past projects

Lead supervisor for a project on use of photography, cross-polarised imaging, and high-frequency ultra-sound techniques to investigate healing of bruises in children and the classification of bruises (e.g., abusive, or non-abusive). Also, analysis of paediatric reporting procedures for measuring and recording bruises. Cardiff University. PhD awarded (2022).
Co-supervisor for a project on investigations using mPCA to understand how ethnicity & sex, maternal smoking and alcohol intake, metabolic differences influence 3D facial shapes in children and adults. Cardiff University. PhD awarded (2021).
Co-supervisor for a project on impact of fluoride concentration in water supply on oral health. Cardiff University. PhD awarded (2018).
Co-supervisor for a project on latanoprost induced iris darkening in colour images of the eye for glaucoma patients. University of Liverpool PhD awarded (2006).

Research themes

Specialisms

Applied statistics
Biomedical imaging
Deep learning
Applied mathematics
Quantum Many-Body Theory

Dr Damian Farnell (he/him)

Overview

Publication

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

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1995

1994

Articles

Book sections

Books

Conferences

Monographs

Research

Overview

Quantum Magnetism & The Coupled Cluster Method (CCM)

Violence Research: National Violence Surveillance Network

Violence Research: Improving Bruise Evidence & Pathways for Victims of Violence

Biostatistics & Data Science: Cancer PROMS

Biostatistics & Data Science: COVID Bereavement Study

Image Processing and AI: ARIA Dataset

Image Processing & AI: 3D Surface Imaging & Shape Modelling

Image Processing & AI: Eye Tracking and Patient Information Leaf Design

Teaching

Biography

Honours and awards

Professional memberships

Academic positions

Speaking engagements

Since 2017:

Committees and reviewing

Supervisions

Current supervision

Yahia Khubrani

Burhan Anis

Past projects

Research themes

Specialisms

External profiles

Dr Damian Farnell
(he/him)