# Contact & People

**Department of Computer Science, Mathematics, Physics and Statistics
**Irving K. Barber Faculty of Science

University of British Columbia Okanagan

1177 Research Road

Kelowna, BC V1V 1V7

Canada

Email: cmps.okanagan@ubc.ca

Please direct all general inquires to the above email address.

### Find our people

**Jeff Andrews**| Assistant Professor | Data Science, Statistics | jeff.andrews@ubc.ca | 250.807.9931 | SCI 111

Graduate student supervisor

**Research Interests:**Clustering and classification via mixture models with applications to bioinformatics.

**Courses & Teaching:**Statistics; data science.

**Cynthia Araujo**| Adjunct Professor | Medical Physics, Physics | cynthia.araujo@ubc.ca

Graduate student supervisor

**Research Interests:**Safe and effective use of radiation for the treatment of cancer including external beam and brachytherapy technique development and verification; implementation of new technology in radiation therapy; use of imaging in treatment planning and treatment verification.

**Deidre Batchelar**| Adjunct Professor | Medical Physics, Physics | dbatchelar@bccancer.bc.ca

Graduate student supervisor

**Research Interests:**Advanced Imaging in Brachytherapy; high precision radiotherapy.

**Heinz Bauschke**| Associate Head - Mathematics, Professor | Mathematics | heinz.bauschke@ubc.ca | 250.807.8529 | ASC 352

Graduate student supervisor

**Research Interests:**Convex analysis and optimization, monotone operator theory, projection methods, and applications.

**Courses & Teaching:**Mathematics.

**Nathan Becker**| Adjunct Professor | Medical Physics | nathan.becker@bccancer.bc.ca

**Research Interests:**image-guided RT, adaptive RT, quality control, and automation

**Thor Bjarnason**| Adjunct Professor | Medical Physics, Physics | thor.bjarnason@interiorhealth.ca | FIP 357

Graduate student supervisor

**Research Interests:**Quality control; radiation safety; patient dose reduction; image quality assessment in planar x-ray and CT.

**Jake Bobowski**| Associate Professor of Teaching | Physics | jake.bobowski@ubc.ca | 250.807.9506 | SCI 261

**Research Interests:**Custom microwave techniques for measuring electromagnetic properties of materials; low-temperature conductivity and penetration depth of unconventional superconductors; complex permittivity of waste-activated sludge.

**Courses & Teaching:**Experimental physics; electronics; solid state physics; statistical mechanics.

**W. John Braun**| Department Head, Professor | Statistics | ubcokb5-g-DeptHead@mail.ubc.ca | 250.807.8032 | SCI 388

Graduate student supervisor

**Research Interests:**Computational statistics, with applications to fire science; statistical process control; statistical education. Most recently, I have been focusing on visualization methodology, using a class of techniques called Data Sharpening.

**Courses & Teaching:**Modelling and Simulation. Predictive Modelling. Data Visualization.

**Wayne Broughton**| Associate Professor | Mathematics | wayne.broughton@ubc.ca | 250.807.9531 | SCI 106

Graduate student supervisor

**Research Interests:**Combinatorial design theory and graph theory.

**Courses & Teaching:**Matrix algebra; applied linear algebra; cryptography; applied abstract algebra; error-correcting codes; history of mathematics; calculus.

**Edward Butz**| Associate Professor | Mathematics | edward.butz@ubc.ca | 250.807.9533 | SCI 107

**Research Interests:**Optimal risk management strategies in neuroscience; risk management in finance.

**Courses & Teaching:**Financial derivatives; linear algebra; calculus.

**Marco Carlone**| Adjunct Professor | Medical Physics, Physics | marco.carlone@ubc.ca

Graduate student supervisor

**Research Interests:**Simulation of linear accelerators; use of magnetic fields in radiotherapy; quality assurance in radiotherapy.

**Stephen Collins**| PhD Student | Medical Physics | stephen.collins@ubc.ca

**Research Interests:**Radiochromic Gel Dosimetry, Optical Computed Tomography, Iterative Image Reconstruction.

**Chad Davis**| Lecturer | Mathematics | chad.davis@ubc.ca | 250.807.8815 | SCI 104

**Research Interests:**Arithmetic geometry; algebraic number theory; elliptic curves; diophantine equations.

**Courses & Teaching:**Linear algebra.

**Matt Davison**| Honourary Affiliate | Statistics | mdavison@uwo.ca

**Research Interests:**Energy finance; options pricing; portfolio optimization; Real options (with application inDefense and Medicine).

**Christel Deas**| MDS (Masters of Data Science) Student Support Assistant | Data Science | christel.deas@ubc.ca | 250.807.9125 | ASC 331

**Morgan Dehnel**| Adjunct Professor | Medical Physics, Physics | morgan@d-pace.com | 250.352.5162 | Suite #305 - 625 Front Street, Nelson, BC, Canada, VIL 4B6

Graduate student supervisor

**Research Interests:**Beamline; ion source; beam diagnostic device development for accelerator produced medical radio-tracers; accelerator based medical therapy.

**Courses & Teaching:**Introduction to Medical Physics

**Sylvie Desjardins**| Associate Professor | Mathematics | sylvie.desjardins@ubc.ca | 250.807.8767 | SCI 378

**Research Interests:**Mathematical ecology and insect dispersal.

**Courses & Teaching:**Applied mathematics; vector calculus; differential geometry; complex analysis.

**Shan Du**| Assistant Professor | Computer Science | shan.du@ubc.ca | SCI 259

**Research Interests:**Computer Vision/Graphics and Machine Learning

**Courses & Teaching:**Web Programming; Software Engineering; Computer Vision; Computer Graphics; Digital Video Processing; Computer Programming

**Sylvia Esterby**| Associate Professor Emeritus | Statistics | sylvia.esterby@ubc.ca | 250.807.9536 | ASC 347

**Research Interests:**Environmetrics and ecological statistics.

**Rebecca Feldman**| Assistant Professor | Medical Physics, Mathematics, Physics, Statistics | rebecca.feldman@ubc.ca | 250.807.8691 | ASC 286

**Research Interests:**Medical Imaging, MRI, Pulse Sequence Design, Image Processing, Translational Imaging

**Courses & Teaching:**Physics, Waves

**Eric Foxall**| Assistant Professor, Tenure-Track | Mathematics | efoxall@mail.ubc.ca | SCI 115

**Research Interests:**Stochastic processes and mathematical biology

**Yong Gao**| Professor | Computer Science, Data Science | yong.gao@ubc.ca | 250.807.9503 | SCI 262

Graduate student supervisor

**Research Interests:**Algorithmic and computational problems in artificial intelligence and network science; applications in social media and computational biology; graph theory and probabilistic method.

**Courses & Teaching:**Algorithm design and analysis; artificial intelligence; discrete structures; network science.

**Paramjit Gill**| Associate Professor | Data Science, Statistics | paramjit.gill@ubc.ca | 250.807.9534 | SCI 112

**Research Interests:**Sports analytics; statistical stylometry; social networks models.

**Vladimir Grebenyuk**| Sessional Instructor | Computer Science | vladimir.grebenyuk@ubc.ca | SCI 104

**Research Interests:**Iterative Machine Learning, Autonomous Systems, Integrated Renewable Energy

**Courses & Teaching:**Computer Fluency, Digital Citizenship, Vector Graphics, Human-Computer Interaction

**Lengyi Han**| Assistant Professor of Teaching | Data Science, Statistics | lhan@mail.ubc.ca | 250.807.8879 | ASC 331

**Donovan Hare**| Associate Professor | Mathematics | donovan.hare@ubc.ca | 250.807.9537 | SCI 113

Graduate student supervisor

**Research Interests:**Combinatorics with a focus on graph coloring problems; discrete optimization with a focus on MIP/constraint programming solutions for the high-stakes testing industry.

**Courses & Teaching:**Pure math; applied math.

**Warren Hare**| Professor | Mathematics | warren.hare@ubc.ca | 250.807.9378 | ASC 353

Graduate student supervisor

**Research Interests:**Mathematical optimization; nonconvex analysis; derivative-free optimization; bundle methods; applications in road design.

**Mohammad Khalad Hasan**| Assistant Professor | Computer Science, Data Science | khalad.hasan@ubc.ca | 250.807.8077 | SCI 260

Graduate student supervisor

**Research Interests:**Human-computer interaction, mobile and wearable (e.g., smartwatches, smart glasses) user interfaces, augmented/virtual/mixed reality, information visualization, gesture interaction, computer vision, machine learning, navigation interfaces, input devices.

**Courses & Teaching:**Human-computer interaction, user interfaces, collaborative software development, scripting and reporting, data analytics.

**Christina Haston**| Professor | Medical Physics, Physics | christina.haston@ubc.ca | 250.807.9886 | ASC 347

Graduate student supervisor

**Research Interests:**Radiation oncology; radiation biophysics.

**Courses & Teaching:**Medical physics; biophysics.

**Fatemeh Hendijani Fard**| Assistant Professor | Computer Science, Data Science | fatemeh.fard@ubc.ca | 250.807.9607 | SCI 266

Graduate student supervisor

**Research Interests:**Software engineering; machine learning; multiagent systems; data analytics.

**Courses & Teaching:**Computer science; data science.

**Alex Hill**| Assistant Professor | Astrophysics | alex.hill@ubc.ca | 250.807.8919 | ASC 305

Graduate student supervisor

**Research Interests:**Radio, optical, and computational astronomy. Interstellar gas, magnetic fields, and turbulence in and around the Milky Way. Photoionization and radiative transfer in interstellar gas. High velocity clouds. Cosmology and the Canadian Hydrogen Intensity Mapping Experiment (CHIME).

**Courses & Teaching:**ASTR 210 (Physical Processes in the Universe), PHYS 321 (Stellar Astrophysics), ASTR 110/111/112 (Astrophysics/Astronomy)

**Michelle Hilts**| Adjunct Professor | Medical Physics, Physics | mhilts@bccancer.bc.ca

Graduate student supervisor

**Research Interests:**Brachytherapy for breast cancer; 3D radiation dosimetry.

**Cornelia Hoehr**| Adjunct Professor | Medical Physics, Physics | choehr@triumf.ca

Graduate student supervisor

**Research Interests:**Medical isotopes; radiotherapy.

**John Hopkinson**| Associate Professor of Teaching | Physics | john.hopkinson@ubc.ca | 250.807.9504 | SCI 258

**Research Interests:**Condensed matter theory: geometrically frustrated magnetism (spin ice, spin liquid, dimer models); hubbard ladders; mesoscopic physics; heavy fermion quantum criticality.

**Courses & Teaching:**First year physics; thermodynamics; statistical mechanics; particle physics; electromagnetism; solid state physics.

**X. Joan Hu**| Honourary Affiliate | Statistics | joanh@stat.sfu.ca

**Research Interests:**Event history data; longitudinal data with latent classes; marked point processes with a spatial correlation.

**Courses & Teaching:**STAT-285. Intermediate Probability and Statistics, Fall 2018 STAT-445/645. Applied Multivariate Analysis, Spring 2019 STAT-854. Biometrics, Spring 2019

**Bowen Hui**| Associate Head Undergraduate, Associate Professor of Teaching | Computer Science | bowen.hui@ubc.ca | 250.807.9353 | SCI 257

Graduate student supervisor

**Research Interests:**Learning analytics; computer science education; decision making under uncertainty; probabilistic user modeling; human-computer interaction cost models; experiment design and analysis.

**Courses & Teaching:**Digital citizenship; computer programming; principles of computer science; human computer interaction; software engineering.

**Derek Hyde**| Adjunct Professor | Medical Physics, Physics | dhyde2@bccancer.bc.ca

Graduate student supervisor

**Research Interests:**Image-guided radiation therapy for high-precision treatments.

**Pourang Irani**| Honourary Affiliate Professor

**Andrew Jirasek**| Associate Head Graduate, Professor | Medical Physics, Physics | andrew.jirasek@ubc.ca | 250.807.8812 | ASC 354

Graduate student supervisor

**Research Interests:**Medical physics; radiation oncology physics; Raman spectroscopy; 3D radiation dosimetry.

**Courses & Teaching:**Medical physics; quantum mechanics; data and image processing.

**Theresa Keeler**| Department Assistant | Computer Science, Data Science, Medical Physics, Mathematics, Physics, Statistics | cmps.okanagan@ubc.ca | 250.807.8866 | SCI 383

**Reza Khanbabaie**| Lecturer | Physics | reza.khan@ubc.ca

**Research Interests:**Brain Physics (Neurophysics); Neuroscience; Neural Networks; EEG & fMRI; Graph Theory, and Neuroeducation

**Courses & Teaching:**PHYS 231 and PHYS 301

**Youry Khmelevsky**| Honourary Affiliate | Computer Science | youry.khmelevsky@ubc.ca

**Research Interests:**Software engineering; biomedical signal processing and control; source code generation; automatic source code debugging; database security and data protection; systems of systems; big data collection and analysis.

**Courses & Teaching:**Software projects; software engineering; object oriented systems analysis and design; special database management systems; special topics in DBMS; database administration.

**Patricia Lasserre**| Associate Professor | Computer Science | patricia.lasserre@ubc.ca | 250.807.9502 | ADM 119B

Graduate student supervisor

**Research Interests:**Active learning techniques for computer science; developing tools for learning, computational thinking and design thinking; application of HCI tools and techniques to improve teaching and learning.

**Courses & Teaching:**Programming; computer vision; HCI; project management; security.

**Ramon Lawrence**| Professor | Computer Science, Data Science | ramon.lawrence@ubc.ca | 250.807.9390 | ASC 349

Graduate student supervisor

**Research Interests:**Database systems and data analytics including data integration; analysis of large-scale scientific data sets and embedded databases for Internet of Things applications; software engineering and system development.

**Courses & Teaching:**Database systems and data analytics; software development.

**Janelle Lessard**| Senior Department Assistant | Computer Science, Data Science, Mathematics, Physics, Statistics | janelle.lessard@ubc.ca | SCI 387

**Jason Loeppky**| Associate Professor | Statistics | jason.loeppky@ubc.ca | 250.807.8795 | ASC 348

**Research Interests:**Design and analysis of experiments for both physical processes and computer based simulation models; applications include environmental and industrial statistics.

**Courses & Teaching:**Statistics

**Yves Lucet**| Associate Head - Computer Science, Professor | Computer Science | yves.lucet@ubc.ca | 250.807.9505 | ASC 350

Graduate student supervisor

**Research Interests:**Computational mathematics, optimization and convex analysis; modeling; model road design to minimize construction costs under safety and environmental constraints; creating algorithms for computer-aided convex analysis; visualizing operators in 2D, 3D, and 4D.

**Courses & Teaching:**Optimization; data structures.

**Marie-Pierre Milette**| Adjunct Professor | Medical Physics, Physics | marie-pierre.milette@ubc.ca

Graduate student supervisor

**Research Interests:**Treatment planning optimization; treatment verification.

**Abdallah Mohamed**| Assistant Professor of Teaching | Computer Science | abdallah.mohamed@ubc.ca | 250.807.8247 | SCI 108

Graduate student supervisor

**Research Interests:**Software engineering; decision support systems (model driven and data driven); component-based software development; creative higher education.

**Courses & Teaching:**Computer fluency; computer creativity; programming; database systems; machine architecture; parallel computing.

**Dominique Monnet**| Postdoctoral Research Associate | Computer Science | dominique.monnet@ubc.ca | 250.899.4184 | ASC 303

**Research Interests:**Operation Research

**Firas Moosvi**| Lecturer | Computer Science, Data Science, Physics | firas.moosvi@ubc.ca

**Research Interests:**Scholarship of Teaching and Learning; Medical Physics; Learning Analytics

**Courses & Teaching:**Introductory Physics, Data Science, Data Visualization, Scientific computation and Programming. COSC 301; DATA 301; PHYS 111.

**Apurva Narayan**| Assistant Professor | Computer Science, Data Science | apurva.narayan@ubc.ca | 250.807.8272 | SCI 110

Graduate student supervisor

**Research Interests:**Artificial intelligence/machine learning with emphasis on explainable AI/ML and quantum machine learning; data mining; data analytics, safety and security of cyber physical systems; software engineering; graph theoretic analysis of complex systems; decision making under uncertainty.

**Courses & Teaching:**Machine learning; Data structures; Data mining and analytics; Software engineering.

**Murray Neuman**| Associate Professor Emeritus | Physics | murray.neuman@ubc.ca | 250.807.9515 | SCI 256

**Research Interests:**Discrimination and separation of microscopic particles by optical and electromechanical methods; time series analysis; applications include possible development of new medical diagnostic methods based on physical sorting of different kinds of biological cells.

**Courses & Teaching:**Classical and quantum mechanics; optics; fluids; environmental physics.

**Ramie Nguyen Ali-Adeeb**| MSc Student | Medical Physics | ramie.ali-adeeb@ubc.ca

**Research Interests:**Radio-biological response in tissue with Raman spectroscopy.

**Anna Ordog**| Postdoctoral Research Fellow

**Rasika Rajapakshe**| Adjunct Professor | Computer Science, Medical Physics | rasika.rajapakshe@ubc.ca | FIP 357

**Research Interests:**Medical imaging; deep learning in medical imaging; web and mobile technologies in health care; health and medical imaging informatics; cancer risk modeling; decision support systems in oncology.

**Courses & Teaching:**Introduction to medical imaging; medical imaging informatics; deep learning in medical imaging.

**Ashlee Robinson**| Senior Department Assistant | Computer Science, Data Science, Mathematics, Physics, Statistics | ashlee.robinson@ubc.ca | 250.807.8866 | SCI 383

**Tim Robishaw**| Adjunct Professor | Astrophysics | tim.robishaw@ubc.ca | 250.497.2350

**Research Interests:**Magnetic fields, interstellar medium, radio astronomy, spectropolarimetry, molecular clouds and masers.

**Mohamed Shehata**| Assistant Professor | Computer Science | mohamed.sami.shehata@ubc.ca | 250.807.9063 | SCI 256

**Nourridine Siewe**| Postdoctoral Research Associate | Computer Science | nsiewe@mail.ubc.ca | SCI 354

**Research Interests:**Mathematical modeling of complex systems using differential equations, difference equations and optimal control theory.

**Courses & Teaching:**Calculus, algebra, differential equations, mathematical biology.

**Javad Tavakoli**| Professor | Mathematics | javad.tavakoli@ubc.ca | 250.807.9535 | SCI 114

Graduate student supervisor

**Research Interests:**information geometry, topological data analysis, queueing theory and applications in telecommunication systems, random walks in quarter plane and applications in probability modeling.

**Courses & Teaching:**Recent teaching: Algebraic Number Theory, Abstract Algebra I & II, Stochastic Processes, Queueing Theory, Calculus (all levels), Topology, AlgebraicTopology, Topological Data Analysis and many Directed Studies in different areas in Math.

**Tony Teke**| Adjunct Professor | Medical Physics, Physics | tteke2@bccancer.bc.ca

Graduate student supervisor

**Research Interests:**Monte Carlo modeling; 4 Pi treatment planning optimization and verification; 4D dose calculation; SBRT/SRS; quality assurance tests for trajectory treatments.

**Paul Tsopméné**| Assistant Professor of Teaching | Mathematics, Statistics | paul.tsopmene@ubc.ca | FIP 324

**Research Interests:**Algebraic topology; calculus of functors and its applications to embeddings including knots and links; manifold calculus; homotopy theory; graph complexes

**Courses & Teaching:**Calculus; Matrix Algebra

**Rebecca Tyson**| Professor | Mathematics | rebecca.tyson@ubc.ca | 250.807.8766 | SCI 386

Graduate student supervisor

**Research Interests:**Mathematical biology and spatial ecology; mathematical models of ecological systems; the development and analysis of mathematical and computational models; cyclic predator-prey populations.

**Courses & Teaching:**Mathematical biology; partial differential equations; ordinary differential equations; numerical analysis.

**Dan Vollick**| Associate Professor | Physics | dan.vollick@ubc.ca | 250.807.9512 | SCI 264

**Research Interests:**General relativity; black holes; cosmology; string theory.

**Courses & Teaching:**Electromagnetic field theory; quantum mechanics; general relativity.

**Irene Vrbik (On Leave)**| Assistant Professor of Teaching | Data Science, Statistics | irene.vrbik@ubc.ca | 250.807.8872 | SCI 393

**Research Interests:**Mixture models; supervised and unsupervised learning; computational statistics and biostatistics.

**Courses & Teaching:**Statistics, data science.

**Shawn / Xianfu Wang**| Professor | Mathematics | shawn.wang@ubc.ca | 250.807.9524 | ASC 351

Graduate student supervisor

**Research Interests:**Variational analysis; convex analysis; optimization; classical analysis; optimization applications in signal processing; statistics; communications.

**Courses & Teaching:**Optimization; analysis; calculus.

**Yas Yamin**| Sessional Instructor | Physics | yas.yamin@ubc.ca | 250.807.8775 | SCI 238B

**Research Interests:**Heterogeneous catalysis; functional surfaces; nano science; photocatalysis; air and water treatment.

**Courses & Teaching:**PHYS 215

**Joseph Yang**| Adjunct Professor | Medical Physics, Physics | jyang4@bccancer.bc.ca

Graduate student supervisor

**Research Interests:**Cone beam CT image optimization; novel imaging applications in radiation therapy.

**Qiduan Yang**| Associate Professor Emeritus | Mathematics | qiduan.yang@ubc.ca | 250.807.9540

Graduate student supervisor

**Research Interests:**Representations of symmetric and alternating groups; galois groups of polynomials; algebraic number theory.

**Courses & Teaching:**Calculus; linear algebra; abstract algebra.

**Xinmin Yang**| Honourary Affiliate | Mathematics | xmyang@cqnu.edu.cn

**Research Interests:**Convex analysis; optimization; variational analysis.

**Courses & Teaching:**Convex analysis; vector optimization; multiobjective optimization.

**Yiqiang Zhao**| Honourary Affiliate | Mathematics | yiqiang.zhao@ubc.ca

**Research Interests:**Block-structured Markov processes and matrix-analytic methods; censoring technique and factorizations; mean-field interaction modelling in networks; quasi-stationary behaviour; tail asymptotics and kernel methods.

**Courses & Teaching:**Advanced queues; queuing networks.