Associate Professor | History | College of Arts

Research interests: History of medicine, history of psychiatry and psychology; professionalization, disciplinary identity, medical pedagogy.

Faculty profile: uoguelph.ca/arts/history/people/tara-abraham

Assistant Professor | Integrative Biology | College of Biological Science

Research interests: Mechanisms and consequences of stress on animal physiology; environmental stressors on neural, endocrine and cardiac systems.

Faculty profile: uoguelph.ca/ib/alderman

Professor | Environmental Sciences | Ontario Agricultural College

Research interests: Global ecological change, sustainability science, forest ecology, ecological modelling, biodiversity, creative writing.

Faculty profile: ses.uoguelph.ca/people/madhur-anand

Associate Professor | Assistant Dean, Graduate Programs | Environmental Sciences | Ontario Agricultural College

Research interests: Glacial geology, geology and groundwater, sedimentary geology, environmental geology, deformation structures, ice-marginal settings, agricultural and industrial contaminants, sedimentological analysis, spatial distribution and physical properties of glacial deposits.

Faculty profile: ses.uoguelph.ca/people/emmanuelle-arnaud

Professor | Associate Dean Research and Graduate Studies | Philosophy | College of Arts

Research interests: phenomenal consciousness, physicalism, mental causation and epiphenomenalism, phenomenal intentionality, panpsychism, and theories of perception; the problems of phenomenal consciousness, embodied cognition, and the thought of William James.

Faculty profile: uoguelph.ca/arts/philosophy/people/andrew-bailey

Associate Professor | Clinical Studies | Ontario Veterinary College

Research interests: Community-engaged service learning projects, veterinary palliative care, human-animal bond, coagulation abnormalities, lung injury, pain management and assessment.

Faculty interests: ovc.uoguelph.ca/clinical-studies/faculty/Shane-Bateman 

Assistant Professor | Population Medicine | Ontario Veterinary College

Research Interests: Diagnostic test evaluations (especially using Bayesian methods), epidemiology, dairy small ruminants, and clinical trials.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Cathy-Bauman 

Professor | Population Medicine | Ontario Veterinary College

Research interests: Veterinary epidemiology, medical informatics, health informatics, information technology, public health informatics, educational technology.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Theresa-Bernardo

Professor | Integrative Biology | College of Biological Science

Research interests: Invasion biology, genetic adaptation, genomic selection and growth, shape, and pathogen-resistant traits in Atlantic salmon, assessment of heritable variation in biological control.

Faculty profile: uoguelph.ca/ib/boulding

Associate Professor | Pathobiology | Ontario Veterinary College

Research interests: Viral immunology, cancer treatment, personalized therapy, cytokine responses to viruses in males and females, inflammation disorders.

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Byram-W-Bridle

Assistant Professor | One Health Collaborative Specialization Faculty | Political Science | College of Social and Applied Human Sciences

Research interests: The political economy of poverty alleviation, international development, foreign aid, poverty, African politics.

Faculty profile: polisci.uoguelph.ca/people/ryan-briggs

Assistant Professor | Management | Gordon S. Lang School of Business and Economics

Research interests: Organizational leadership and management issues in social entrepreneurship/enterprises; knowledge transfer, stakeholder theory, sustainability and accountability principles and their effect on firm performance.

Faculty profile: www.uoguelph.ca/lang/people/ruben-burga

Associate Professor | Human Health and Nutritional Sciences | College of Biological Science

Research interests: Novel training methods, interventions and supplements which may lead to adaptation and performance improvement; the effects of physical activity, sport, and exercise to alter cardiovascular form and function. 

Faculty profile: uoguelph.ca/hhns/people/dr-jamie-burr

Professor | Environmental Design and Rural Development | Ontario Agricultural College

Research interests: The future of rural communities, planning, community development, agricultural land preservation, siting livestock facilities, rural land use, and the environment, measuring farmland loss, immigration in rural communities, food security, and rural resilience.

Faculty profile: uoguelph.ca/sedrd/people/wayne-caldwell

Associate Professor | Computer Science | College of Engineering and Physical Sciences

Research interests: Classification and modelling using artificial neural networks, agriculture, public health, visualizing pitch class sets for music, parallel patterns on GPUs.

Faculty profile: uoguelph.ca/computing/people/david-calvert

Professor | History | College of Arts

Research interests: History of medicine, history of public health, gender history, dentistry, drug and alcohol use.

Faculty profile: uoguelph.ca/arts/people/catherine-carstairs

Professor | Interim Director | Hospitality, Food and Tourism Management | Gordon S. Lang School of Business and Economics

Research interests: Tourism management, sustainable tourism, destination management and marketing, tourism economics.

Faculty profile: uoguelph.ca/lang/people/hs-chris-choi

Assistant Professor | Graduate Program Coordinator, One Health | Population Medicine | Ontario Veterinary College

Research interests: Vector-borne and zoonotic diseases, disease ecology, epidemiology, surveillance, One Health pedagogy.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Katie-Clow 

Adjunct Professor | Biomedical Sciences | Ontario Veterinary College

Research interests: Cancer progression, companion animal cancer, translational medicine.

Faculty profile: ovc.uoguelph.ca/biomedical-sciences/people/faculty/Brenda-Coomber

Associate Professor | Chair | Molecular and Cellular Biology | College of Biological Science

Research interests: Cell adhesion and migration in disease progression; tumour cell invasion and metastasis; biochemical signalling in health and disease.

Faculty profile: uoguelph.ca/mcb/people/dr-marc-coppolino

Associate Professor | Graduate Co-ordinator | Integrative Biology | College of Biological Science

Research interests: Community ecology, metacommunity dynamics, molecular identification, data analysis in R, instruction, graduate training, Spatio-temporal analysis, computational ecology.

Faculty profile: uoguelph.ca/ib/cottenie

Assistant Professor | Molecular and Cellular Biology | College of Biological Science

Research interests: How bacteria resist antibiotics and how they interact with their host. Identifying and developing alternatives to antibacterial chemotherapy.

Faculty profile: uoguelph.ca/mcb/people/dr-georgina-cox 

Assistant Professor | Integrative Biology | College of Biological Science

Research interests: Welfare of wild animals, restoring health to sick and injured wildlife, anthropogenic effects on wildlife that have been admitted to rehabilitation centres, investigating morbidities in individual wild animals admitted to rehabilitation centres.

Faculty profile: uoguelph.ca/ib/Sherri_Cox

Associate Professor | Computer Science | College of Engineering and Physical Sciences

Research interests:  Artificial intelligence, decision support systems, data standardization and integration analysis, information privacy, and data governance.

Faculty profile: uoguelph.ca/computing/people/rozita-dara 

Associate Professor | Philosophy | College of Arts

Associate Professor | Psychology | College of Social and Applied Human Sciences

Research interests: Colour perception and categorization, cognitive science and its foundations, culture and cognition, cognitive science and its foundations, the evolution of culture, experimental philosophy.

Faculty Profiles: uoguelph.ca/arts/philosophy/people/don-dedrick , uoguelph.ca/psychology/users/don-dedrick

Associate Professor | Interim Chair | Marketing and Consumer Studies | Gordon S. Lang School of Business and Economics

Research interests: Quantitative marketing and industrial organization, marketing strategy and public policy, food and health marketing, analytical marketing modelling, retailing and channel management, movie marketing, and e-Commerce.

Faculty profile: uoguelph.ca/lang/people/tirtha-dhar

Professor | Chair | Population Medicine | Ontario Veterinary College

Research interests: Metabolic disease in dairy cows, impact of lonophores in dairy cattle, pain management of dairy cattle, management of disease.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/todd-duffield

Associate Professor | Chair | Food Science | Ontario Agricultural College

Research interests: Descriptive analysis of whole grain products, perceptions of tastes and textures, sensory evaluation and aging.

Faculty profile: uoguelph.ca/foodscience/people/lisa-duizer

Professor | Canada Research Chair in Environmental Microbiology of Agro-ecosystems | Co-Executive Director, Soils@Guelph | Environmental Sciences | Ontario Agricultural College

Research interests: The relationship between genetic diversity of soil microbial communities and soil ecosystem functioning; the impact of agricultural and environmental practices on soil microbial communities and microbially mediated soil processes; environmental microbiology, soil microbiology, bioremediation, applied soil ecology, molecular microbial ecology.

Faculty profile: ses.uoguelph.ca/people/kari-dunfield

Professor | Associate Director (Graduate Studies) | Engineering | College of Engineering and Physical Sciences

Research interests: Thermochemical conservation of agri-residue and bio-mass for energy, renewable and cleaner energy, water gasification for energy, assessment of advanced energy systems, thermodynamic optimization & lifecycle analysis.

Faculty profile: www.uoguelph.ca/engineering/content/faculty/animesh-dutta

Professor | Animal Biosciences | Ontario Agricultural College

Research interests:  Understanding how nutrients affect physiological functions, wellbeing and health, using biotechnologies and genomics tools to understand how the environment is impacted by animal production, gastrointestinal physiology, nutrition and metabolism in pigs.

Faculty profile: animalbiosciences.uoguelph.ca/abscpeople/mfan

Assistant Professor | Biomedical Sciences | Ontario Veterinary College

Research interests: Effects of Endocrine Disrupting Compounds (EDCs) and toxicants on gene expression and molecular mechanisms regulating early embryonic development; effect of CNV of genes on the Y-chromosome in relation to disease and fertility; reproductive toxicology in the bovine model with large translational potential on humans and other mammals

Faculty profile: ovc.uoguelph.ca/biomedical-sciences/people/faculty/Laura-Favetta

Assistant Professor | Hospitality, Food and Tourism Management | Gordon S. Lang School of Business and Economics

Research interests: Consumer behaviour, ethical decision making, international marketing, social marketing.

Faculty profile: uoguelph.ca/lang/people/lianne-foti

Professor | Population Medicine | Ontario Veterinary College

Research interests: Sow reproduction and longevity, on-farm control of Salmonella, antimicrobial resistance and presence of zoonotic pathogens on pig farms, nutritional factors of enteric diseases, epidemiology of swine diseases. 

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Robert-Friendship G60

Assistant Professor | Sociology and Anthropology | College of Social and Applied Human Sciences

Research interests: Climate change, ethics of care, human-animal relations, environment and infrastructure, citizenship, environmental knowledge.

Faculty profile: socioanthro.uoguelph.ca/people/karine-gagné

Assistant Professor | Molecular and Cellular Biology | College of Biological Science

Research interests: Differential patterns of pathogenic regulation between microbial species; systems biology to elucidate microbial proteome dynamics and interactions; mechanistic characterization of pathogenic proteins; mass spectrometry-based proteomics for drug discovery and repurposing.

Faculty profile: uoguelph.ca/mcb/people/dr-jennifer-geddes-mcalister

Professor | Interim Associate Dean of Research and Graduate Studies | Integrative Biology | College of Biological Science

Research interests: The cellular mechanisms underpinning cardiac function in vertebrates, the evolution of muscle contrition regulation, the molecular mechanisms underlying the remodelling capacity of the fish heart, bitumen exposure consequences on the development and function of the salmonid heart, hagfish performance during prolonged periods of anoxia.

Faculty profile: uoguelph.ca/ib/gillis

Associate Professor | Environmental Sciences | Ontario Agricultural College

Research interests: Renewable energy and biochemical production from agricultural byproducts and wastes; environmental sustainability; livestock mortality management; pathogens in engineered agricultural systems.

Faculty profile: uoguelph.ca/ses/people/brandon-gilroyed 

Professor | Philosophy | College of Arts

Research interests: Philosophy of medicine, philosophy of science, bioethics, women’s health, understanding when knowledge claims are justified in health care, evidence-based medicine, the decision-making framework that relies on clinical trial evidence, vaccine hesitancy.

Faculty profile: uoguelph.ca/arts/philosophy/people/maya-j-goldenberg

Associate Professor | School of Languages and Literatures | College of Arts

Research interests: Spanish / English linguistics, sociolinguistics, English / Spanish phonology, phonetics, romance philology, translation studies, Spanish and English as a second language.

Faculty profile: www.uoguelph.ca/arts/people/rosario-g%C3%B3mez

Director | Computer Science | College of Engineering and Physical Sciences

Research interests: Visual computing; computer graphics, computer vision, visualization, image processing, and pattern recognition.

Faculty profile: uoguelph.ca/computing/people/minglun-gong

Professor | Director, Canadian Research Institute for Food Safety (CRIFS) | Graduate Coordinator, Food Safety & Quality Assurance Program | Food Science | Ontario Agricultural College

Research interests: Use of genomics and bacteriophages to control the growth of foodborne pathogens, and to develop rapid tests to detect foodborne and waterborne pathogens with an emphasis on Escherichia coli O157:H7, Salmonella spp, and Listeria monocytogenes, foodborne viruses, and foodborne toxins. 

Faculty profile: uoguelph.ca/foodscience/people/lawrence-goodridge 

Assistant Professor | PhytoGro Research Chair in Controlled Environment Systems | Environmental Sciences | Ontario Agricultural College

Research interests:  All things Controlled Environment Agriculture (CEA) including – Medicinal crop production, food insecurity in urban and northern/remote communities, water treatment technologies, bioregenerative life-support for human space exploration; resource recovery and recycling in vertical farming systems, CEA crop diversification, plant-environment interactions.

Faculty profile: uoguelph.ca/ses/people/thomas-graham 

Assistant Professor | Population Medicine | Ontario Veterinary College

Research interests:  Social and environmental determinants of One Health in animal and human populations; Foodborne diseases; Translational animal diseases; Health equity; Healthcare utilization

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/lauren-grant

Associate Professor | Population Medicine | Ontario Veterinary College

Research interests: Introduction, spread, dynamics, and control of infectious diseases in populations; examining the effectiveness and cost-effectiveness of public and veterinary health. 

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Amy-Greer 

Professor and Department Chair | Integrative Biology | College of Biological Science

Research interests: Genome evolution, DNA quantification methodology, biological diversity, multi-level selection theory, integrative genomics.

Faculty profile: uoguelph.ca/ib/gregory

Associate Professor | Environmental Sciences | Ontario Agricultural College

Research interests: Water quality, microbial source tracking, waterborne pathogens, microbial biofilms, ecosystem science and biodiversity, plant and environmental health.

Faculty profile: uoguelph.ca/ses/people/marc-habash

Associate Professor | Computer Science | College of Engineering and Physical Sciences

Research interests: Decision support, association mining, machine learning, disease characterization, biological signals, decision confidence, visualization, high-risk decision making, decision exploration.

Faculty profile: uoguelph.ca/computing/people/andrew-hamilton-wright

Professor | Integrative Biology | College of Biological Science

Research interests: Molecular biodiversity, molecular ecology, applied biomonitoring using environmental DNA (eDNA), invasive alien species, species-at-risk, animal and plant health, and food fraud.

Faculty profile: uoguelph.ca/ib/hanner

Professor | Food, Agricultural and Resource Economics | Ontario Agricultural College

Research interests: Economic and social impacts of food-borne disease, especially in developing countries; Economics of food safety; Evaluation of food safety and animal health capacity-building, especially in developing countries; food safety and the informal sector.

Faculty profile: uoguelph.ca/fare/bios/f_henson.html

Associate Professor | Associate Dean, Students & Academic | Clinical Studies | Ontario Veterinary College

Research interests: Bovine and equine respiratory disorders, communication skills in veterinary medicine, clinical teaching of veterinary medicine and performance assessment, curriculum design and mapping, veterinary community outreach.

Faculty profile: ovc.uoguelph.ca/clinical-studies/faculty/Joanne-Hewson

Associate Professor | Integrative Biology | College of Biological Science

Research interests: Environmental monitoring in aquatic ecosystems including phytoplankton and zooplankton high-throughput monitoring strategies. Iodine & thyroid hormone signalling in marine ecosystems, functional genomics of larval development, metamorphosis and settlement in zooplankton, function and evolution of sensory signalling systems in selected marine invertebrate groups.

Faculty profile: uoguelph.ca/ib/heyland

Associate Professor | Human Health and Nutritional Sciences | College of Biological Science

Research interests: My research focuses on understanding the regulation of mitochondrial bioenergetics (aerobic ATP production and ROS generation) in diverse tissues.  We focus on elucidating novel regulation of mitochondria to identify unique lifestyle interventions to optimize mitochondrial biology in skeletal muscle, cardiac muscle, adipose tissue, liver and the brain. We apply this knowledge to the study of human performance and disease prevention, with a particular focus on using nutrition and exercise to prevent age-associated sarcopenia, type 2 diabetes, heart failure and diabetic cardiomyopathy.

Faculty profile: uoguelph.ca/hhns/people/dr-graham-holloway

Associate Professor | Sociology Graduate Program Coordinator | Sociology and Anthropology | College of Social and Applied Human Sciences

Research interests: Cities; Public Spaces; Social Theory; Social Interaction; Pet-facilitated Interaction; Housing; Solidarity; Stigmatization; Sociability

Faculty profile: socioanthro.uoguelph.ca/people/mervyn-horgan-0

Professor | Philosophy | College of Arts

Research interests: Plant ontology and plant ethics, “Post-Humanist” ethics, animal welfare, implications for practical lives of animals (human and non-human), the demarcation of human from non-human animals, the concept of “the animal” as a political or moral being, narrative short fiction and poetry as an affective dimension of knowledge-transfer and knowledge exchange in One Health complex scenarios.

Dr. Houle was one of the original three U of G faculty (with David Waltner-Toews, OVC, and Bruce Hunter, OVC) of the pan-Canadian research team called “COPEH-CAN” that takes ecosystem approaches to health. She worked with this research team for over a decade, making some crucial historical links to U of G and networks, including James Kay.

Faculty profile: uoguelph.ca/arts/philosophy/people/karen-houle

Professor | Integrative Biology | College of Biological Sciences

Research interests: The ecology and genetics of small populations, causes and consequences of genome duplication, function and evolution of plant reproductive systems, ecological consequences of genetic diversity.

Faculty profile: uoguelph.ca/ib/husband

Professor | Economics and Finance | Gordon S. Lang School of Business and Economics
Professor | History | College of Arts

Research interests: Economic history & economic development. Applications: long-term change, origins of health inequality and physical well-being, aboriginal demography, industrialization.

Faculty profile: uoguelph.ca/lang/people/kris-inwood

Associate Professor | Clinical Studies | Ontario Veterinary College

Research interests: Neurological disorders, comparative epilepsy, EEG, veterinary neurology.

Faculty profile: ovc.uoguelph.ca/clinical-studies/faculty/Fiona-James

Associate Professor | Regional Director of CWHC ON/NU | Pathobiology | Ontario Veterinary College |

Research interests: Wildlife and ecosystem health, ecology of diseases in wild animal populations, rodent and vector borne diseases.

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Claire-Jardine

Professor | Political Science | College of Social and Applied Human Sciences

Research interests: Maternal health, reproductive rights, women and gender and politics, human rights and justice, Latin America.

Faculty profile: polisci.uoguelph.ca/people/candace-johnson

Professor | Political Science | College of Social and Applied Human Sciences

Research interests: Environmental governance, climate change, urbanization, poverty, renewable energy, Asia, Latin America.

Faculty profile: polisci.uoguelph.ca/people/craig-johnson

Associate Professor | Graduate Coordinator | Marketing and Consumer Studies | Gordon S. Lang School of Business and Economics

Research interests: Market response models, forecasting, market research, conjoint analysis, marketing channels and pricing, managing and measuring price, responsiveness, marketing and operations, management interface.

Faculty profile: uoguelph.ca/lang/research-topics/econometrics

Professor | Animal Biosciences | Ontario Agricultural College

Research interests: Identifying genetic markers associated with ruminant inflammatory diseases (mastitis and Johne’s disease); The effects of maternal stress on genetic programming of the fetal neuroendocrine-immune system and nutritional intervention; promoting healthy neonatal gut development through the use of probiotics; Immunotoxicity of bacterial and fungal toxin mixtures.

Faculty profile: animalbiosciences.uoguelph.ca/abscpeople/nkarrow

Professor | One Health Collaborative Specialization Faculty | Sociology and Anthropology | College of Social and Applied Human Sciences

Research interests: Disability, well-being, mind-body integration, identity and personhood, ritual and performance, space and place, cross-cultural perspectives on human development, aging, and life course, and accommodations for students with learning and developmental disabilities in Japanese schools.

Faculty profile: socioanthro.uoguelph.ca/people/satsuki-kawano

Professor | Dairy Farmers of Ontario Chair in Dairy Cattle Health | Population Medicine | Ontario Veterinary College

Research interests: Control of infectious and metabolic diseases of dairy cattle, especially Johne’s Disease, bovine mastitis and bovine lameness, and the prudent use of antibiotics in cattle as part of an overall strategy to decrease the risk of AMR.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/david-kelton

Professor | Biomedical Sciences | Ontario Veterinary College

Research interests: Molecular diagnostics and early biomarkers of disease, molecular toxicology and diagnostics, regulation of expression of drug metabolizing enzymes, functional significance of altered expression of drug metabolizing enzymes during cellular injury.

Faculty profile: ovc.uoguelph.ca/biomedical-sciences/people/faculty/Gordon-Kirby

Associate Professor | Biomedical Sciences | Ontario Veterinary College

Research interests: Stem cell and tissue engineering-based therapies, joint cartilage, joint homeostasis, regenerative medicine, translation of novel therapies to human medicine.

Faculty profile: ovc.uoguelph.ca/biomedical-sciences/people/faculty/Thomas-G-Koch

Associate Professor | Political Science | College of Social and Applied Human Sciences

Research interests:  The politics of immigration, specifically in North West Europe and North America; the politics of immigrants’ social rights and the role of populist anti-immigrant parties; social policy; institutionalism.

Faculty profile: polisci.uoguelph.ca/people/edward-koning

Assistant Professor | Environmental Sciences | Ontario Agricultural College

Research interests: Urban heat islands, cooling hot cities/climate change adaptation, regional climate modelling and dynamics, downscaling, local climate effects of urban trees, pedestrian thermal comfort, urban meteorological model development, urban thermal anisotropy, climate impacts of photovoltaic arrays, canopy micrometeorology.

Faculty profile: uoguelph.ca/ses/people/scott-krayenhoff

Professor | Biomedical Sciences | Ontario Veterinary College

Research interests: The biology of small RNAs and their associated pathways in reproduction, neurobiology and cancer in multiple species. RNAs as biomarkers of fertility and development. 

Faculty profile: ovc.uoguelph.ca/biomedical-sciences/people/faculty/Jonathan-LaMarre 

Professor | NSERC/Dairy Farmers of Ontario Industrial Research Chair in Dairy Microbiology | Food Science | Ontario Agricultural College

Research interests: Dairy microbiology from production through processing and digestion. How food, foodborne pathogens and probiotics interact and influence the composition and activity of the gut microbiota leading to potential health benefits. 

Faculty profile: uoguelph.ca/foodscience/people/gisèle-lapointe

Professor | Mathematics and Statistics | College of Engineering and Physical Sciences

Research interests: Mathematical modelling, simulation, & analysis of dynamics of complex natural, engineering & social systems, individually based simulation models, multi-agent-based simulations, cognitive agents, statistical analysis of simulation data, artificial intelligence, computational intelligence, spread of epidemics and vaccination strategies.

Faculty profile: mathstat.uoguelph.ca/people/lawniczak

Professor | Population Medicine | Ontario Veterinary College

Research interests: Promotion of health, fertility, and productivity in dairy cattle, antimicrobial stewardship in dairy farming and veterinary practice, evidence-based veterinary medicine, and applied epidemiology.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Stephen-LeBlanc

Associate Professor | Engineering | College of Engineering and Physical Sciences

Research interests: Agricultural impacts on groundwater quality and quantity, impacts of climate change on hydrological systems, groundwater flow and contaminant transport in fractured geologic media, source water protection for Indigenous and rural communities.

Faculty profile: uoguelph.ca/engineering/content/faculty/jana-levison

Assistant Professor | Geography, Environment & Geomatics | College of Social and Applied Human Sciences

Research interests: fostering a wider understanding of Indigenous worldviews, and how Indigenous worldviews must inform environmental decisions, specifically as Indigenous peoples are impacted by resource or industrial development.

Faculty profile: geg.uoguelph.ca/faculty/lewis-diana

Professor | Animal Biosciences | Ontario Agricultural College

Research interests: Fertility and ovarian function, bioactive peptide production, antibiotic alternatives; physiology and mechanisms of ovarian follicular development.

Faculty profile: animalbiosciences.uoguelph.ca/abscpeople/jli

Professor | Food Science | Ontario Agricultural College

Research interests: Food packaging, electrospinning/electrospraying, encapsulation, biopolymer film/coating, coffee technology, injection moulding, and package prototyping.

Faculty profile: uoguelph.ca/foodscience/people/loong-tak-lim

Professor | English and Theatre Studies | College of Arts

Research interests: Science communication, communication and media, art/sci collaborations, media education, health and wellness.

Faculty profile: uoguelph.ca/arts/sets/people/mark-lipton

Associate Professor | Population Medicine | Ontario Veterinary College

Research interests: Health management strategies to increase longevity in dairy cattle, pain reduction strategies for dehorning dairy calves, associations among measures of health, production and nutrition in dairy herds.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Kerry-Lissemore

Associate Professor | Arrell Chair in Food, Policy and Society | Geography, Environment and Geomatics | College of Social and Applied Human Sciences

Research interests: Food systems and security, community ecology, natural resource conflict, human ecology, and well-being.

Faculty profile: geg.uoguelph.ca/faculty/loring-philip

Associate Professor | Graduate Studies Coordinator | Molecular and Cellular Biology | College of Biological Science

Research interests: Unfolded Protein Response and human diseases: cellular proteins involved in animal stress responses, the role of the Unfolded Protein Response in animal development, cell differentiation, Alzheimer’s, diabetes, cancer and viral infection; Molecular mechanisms of aging, using planarians as aging models; gene-knockout mice; virus-cell interaction.

Faculty profile: uoguelph.ca/mcb/people/dr-ray-lu

Assistant Professor | History | College of Arts

Research interests: Anishinaabe history, Crown-Indigenous relations, industrialization of the subarctic, food sovereignty, community wellbeing, oral research methodologies, land-based learning.

Faculty profile: uoguelph.ca/arts/history/people/brittany-luby

Professor | Department of Plant Agriculture | Ontario Agricultural College

Research interests: Agricultural genetics, agricultural genomics, crop quality and yield improvement, plant breeding, genetics of adaptation, genetic solutions to address agriculture’s environmental impact

Key words: Food safety, food security

Faculty profile: https://www.plant.uoguelph.ca/llukens

Professor | Human Health and Nutritional Sciences | College of Biological Science

Research interests: The influence of dietary fats on health and prevention of chronic disease throughout the lifecycle. In particular, bioactive fatty acids and their role in metabolism, breast cancer, brain health and childhood obesity prevention.

Faculty profile: uoguelph.ca/hhns/people/dr-david-wl-ma 

Guelph Family Health Study: guelphfamilyhealthstudy.com

Professor | Canada Research Chair in Water Supply Security | Engineering | College of Engineering and Physical Sciences

Research interests: Water supply security, municipal infrastructure integrity, risk assessment and management, statistical analyses of environmental data, solid waste management and landfill design.

Faculty profile: uoguelph.ca/engineering/content/faculty/ed-mcbean

Associate Professor | Fine Art and Music | College of Arts

Research interests: Choral music and social justice, Canadian choral mosaic, gesture as a unique representation of musical thought, choral rehearsing as “giving voice”, music and health.

Faculty Profile: uoguelph.ca/arts/sofam/people/marta-mccarthy

Professor | History | College of Arts

Research interests: History of science, environmental history, Latin America, world history, international development, comparative history, coffee crop diseases, global history, and the history of tropical agriculture.

Faculty profile: uoguelph.ca/arts/history/people/stuart-mccook

Professor | Plant Agriculture | Ontario Agricultural College

Research interests: Biology and management of crops, plant nutrition, biological control of plant pathogens, disease forecasting and management, management of nematodes on vegetable crops, Fusarium, and management of onion maggot, carrot rust fly and carrot weevil.

Faculty profiles: plant.uoguelph.ca/mrmcdona

Associate Professor | Sociology and Anthropology | College of Social and Applied Human Sciences

Research interests: Indigenous peoples, western Canada, ethnography, land use, hunting, territoriality, food and resource harvesting practices, contemporary Indigenous land use in the context of mining and logging.

Faculty profile: socioanthro.uoguelph.ca/people/thomas-tad-mcilwraith

Associate Professor | Psychology | College of Social and Applied Human Sciences

Research interests: Parental behaviour when their children are in pain, advocacy and policy in the treatment of pediatric procedural pain, measurement of child fear in the context of pain. 

Faculty profile: uoguelph .ca/psychology/users/c-meghan-mcmurtry

Associate Professor | Geography, Environment and Geomatics | College of Social and Applied Human Sciences

Research interests: Forest conservation and management, Ecology and ethnoecology of plants, Environmental policy Indigenous-led conservation.

Faculty profile: geg.uoguelph.ca/faculty/moola-faisal

Associate Professor | Pathobiology | Ontario Veterinary College

Research interests: Microbial quality of water and public health: 1. Surface water quality and recreation, 2. The impact of septic systems and agricultural activity on private wells, 3. Microbial Ecology of drinking water distribution systems and 4. Water and Sanitation challenges in resource-limited settings.

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Heather-Murphy

Professor | History | College of Arts

Research interests: Animal history, environmental history, live performance and communication, entertainment and information industries, America in the world, North American West.

Faculty profile: uoguelph.ca/arts/history/people/susan-nance

Associate Professor | Integrative Biology | College of Biological Science

Research interests: The long-term effects of environmental stress on development, behaviour, physiology and fitness of wildlife; how environmental change and landscape modification can impact stress responses in animals ranging from birds to butterflies to small mammals, and how these insights may apply to understanding stress and human health.

Faculty Profile: uoguelph.ca/ib/newman

Associate Professor | Integrative Biology | College of Biological Science

Research interests: Conservation, habitat loss, climate change, endangered and threatened species, protected areas, reintroduction, migration, movement, dispersal, birds, butterflies, and salamanders.

Website: norrislab.ca

Professor | Psychology | College of Social & Applied Human Sciences

Research interests: Qualitative and theoretical methods applied to social issues; social aspects of health and ethical implications of science and technology;  public deliberation as a method for involving broader publics in research; developing qualitative methods in psychology; human microbiome.

Faculty profile: uoguelph.ca/psychology/users/kieran-odoherty

Professor | Coordinator, Master of Public Health Program | Population Medicine | Ontario Veterinary College

Research interests: Environmental public health policy and practice, healthy public policy, public health interventions, built environment and impacts on human health, food safety knowledge, attitudes, and behaviours, post-secondary student mental health, public health communication, post-secondary pedagogy, curriculum development, and program administration.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Andrew-Papadopoulos

Associate Professor | Geography, Environment and Geomatics | College of Social & Applied Human Sciences

Research interests: Using waste management to understand social organization and human exchanges with the environment; informality, urban inequality, feminist geography and social difference; waste management systems and planning; environmental health; scholarship of teaching and learning.

Faculty profile: geg.uoguelph.ca/faculty/parizeau-kate

Professor | NSERC Industrial Research Chair | Engineering | College of Engineering and Physical Sciences

Research interests: As a contaminant hydrogeologist, Beth is interested in the transport and fate of contaminants in the subsurface through soil and groundwater and the risks to human and ecosystem receptors. Her team does research at real field sites using high-resolution methods addressing various contaminant sources on groundwater and surface water quality. One of her long-standing research collaborations is with the City of Guelph, where novel methods for characterizing and monitoring the bedrock aquifer we rely on for our drinking and freshwater supplies are advanced with their UoGuelph G360 Groundwater Research Institute methodologies, staff and students. 

Faculty profile: uoguelph.ca/engineering/people/beth-parker

Associate Professor | Population Medicine | Ontario Veterinary College

Research Interests: One Health, Ecohealth, surveillance, antimicrobial resistance, wildlife health, zoonoses.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/Jane-Parmley

Associate Professor | Graduate Coordinator | Population Medicine | Ontario Veterinary College

Research interests: Multi-level statistical modelling, analysis of spatial and molecular data, E. coli O157:H7, Salmonella, Campylobacter and antimicrobial-resistant organisms in humans, cattle, dogs, poultry, swine, and wildlife.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/David-Pearl

Associate Professor | Pathobiology | Ontario Veterinary College

Research interests: Epidemiology and impact of parasitic infections. Emerging parasitic zoonoses. Development of parasite control programs that minimize the risk of development of drug resistance.

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Andrew-S-Peregrine

Professor | Biomedical Sciences | Ontario Veterinary College

Research interests: Female reproductive biology and ovarian cancer, developing therapeutics for the treatment of late-stage ovarian cancer, focusing on anti-angiogenic therapies for inhibiting new growth of blood vessels supplying the tumours. 

Faculty profile: ovc.uoguelph.ca/ctrmn/dr-jim-petrik

Professor | Family Relations and Applied Nutrition | College of Social & Applied Human Sciences

Research interests: Practitioner-researcher collaboration, biopsychosocial health and mental health, children and youth accessing intensive mental health services, and the psychosocial impacts of illness on vulnerable populations.

Faculty profile: family.uoguelph.ca/people/michèle-preyde

Associate Professor | Environmental Sciences | Ontario Agricultural College

Research interests: Environmental toxicology, the fate of chemicals in the environment, toxicological risk assessment, and freshwater and marine mollusk biology.

Faculty Profile: ses.uoguelph.ca/people/ryan-prosser

Website: wisdomofthemoose.com

Assistant Professor | Population Medicine | Ontario Veterinary College

Research interests: Risk factors associated with mortality at veal operations, developing strategies to reduce antimicrobial use in the veal sector, evaluating the utility of navel disinfection in dairy calves, and identifying new technologies to improve calf health and welfare.

Faculty profile: ovc.uoguelph.ca/population-medicine/faculty/David-Renaud

Associate Professor | Department Chair | Management | Gordon S. Lang School of Business and Economics

Research interests: Project management, accountability, team leadership, sustainable economics, sustainable agriculture, biomimicry.

Faculty profile: uoguelph.ca/lang/people/davar-rezania

Associate Professor | Animal Biosciences | Ontario Agricultural College

Research interests: Interplay between animal health, nutrition, and reproduction and their impact on livestock production efficiency and sustainability.

Faculty profile: animalbiosciences.uoguelph.ca/abscpeople/eribeiro

Assistant Professor | Pathobiology | Ontario Veterinary College

Research interests: Application of big data analysis techniques to disease informatics, microbial sequencing data in precision agriculture applications, genomics and metagenomics, antimicrobial resistance, the role of microbiome in disease progression/immune development, One Health approaches to AMR and antibiotic alternatives.  

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Nicole-Ricker

Professor | Weed Management Specialist | Plant Agriculture | Ontario Agricultural College

Research interests: Weed management in vegetable crops, the effects of cultural practises and soil fertility on crop-weed competition and the effect of herbicide residues on the production of vegetables. 

Faculty profile: plant.uoguelph.ca/drobinso

Assistant Professor | Environmental Design and Rural Development | Ontario Agricultural College

Research interests: Gender planning in agri-food systems, gender transformative change, farmer-led research, indigenous food systems, integrated seed systems, international research for development, gender and intersectionality in agri-food systems.

Faculty profile: uoguelph.ca/sedrd/people/silvia-sarapura

Professor | Director, Gosling Research Institute for Plant Preservation | Plant Agriculture | Ontario Agricultural College

Research institute:  Regulatory signals that modulate plant development and stress mitigation; development of in vitro technologies for propagation and conservation of plant genetic resources for the Canadian agricultural and horticultural industries.

Faculty profile: plant.uoguelph.ca/psaxena

Professor | CGIL Director | Animal Biosciences | Ontario Agricultural College

Research interests: Genetics and genomics in livestock breeding; using genomic information to enhance genetic evaluation and genomic selection.

Faculty profile: animalbiosciences.uoguelph.ca/abscpeople/schenkel

Professor | Chemistry | College of Engineering and Physical Sciences

Research interests: Chemical synthesis, catalysis, biomass conversion, sustainable chemistry & metallurgy, synergistic co-processing & recycling.

Profile: schlaflab.uoguelph.ca/

Assistant Professor | Molecular and Cellular Biology | College of Biological Science

Research interests: Genomic technologies (CRISPR-Cas9, high-throughput functional genomic analysis), fungal pathogenesis (microbial fungal pathogens and the mechanisms by which they cause disease), antifungal drug resistance.

Faculty profile: uoguelph.ca/mcb/people/dr-rebecca-shapiro

Professor | Associate Dean, Research and Graduate Studies | Pathobiology | Ontario Veterinary College

Research interests: Immunology of avian influenza virus infection, Immune response to Marek’s disease virus in chickens, immunology of avian influenza virus infection in chickens, interactions between commensal bacteria in the intestine and the chicken immune system.

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Shayan-Sharif

Professor | Environmental Sciences | Ontario Agricultural College

Research interests: Aquatic and sediment toxicology, ecological risk assessment, benthic invertebrate and zooplankton community ecology, aquatic-terrestrial interactions, disturbance ecology.

Faculty profile: ses.uoguelph.ca/people/paul-sibley

Associate Professor | Geography, Environment and Geomatics | College of Social and Applied Human Sciences

Research interests: Fisheries, aquaculture, and coastal communities; international ocean governance; indigenous fishing rights; media and technology in environmental governance.

Faculty profile: geg.uoguelph.ca/faculty/silver-jennifer

Assistant Professor | CARE-AI affiliate | Philosophy | College of Arts

Research interests: Bioethics, AI ethics, neuroethics, business ethics; virtue theory, philosophy of cognitive science, experimental philosophy; mHealth, digital phenotyping, computational psychiatry, computational social science.

Faculty profile: uoguelph.ca/arts/people/joshua-august-gus-skorburg

Professor | Arrell Chair in the Business of Food | Hospitality, Food and Tourism Management | Gordon S. Lang School of Business and Economics

Research interests: Agri-food value chain analysis & management, food consumer behaviour.

Faculty profile: www.uoguelph.ca/lang/people/simon-somogyi

Professor | Psychology | College of Social & Applied Human Sciences

Research interests: Social justice issues, understanding explicit and implicit prejudice, inequalities in the workplace; the inequalities that exist between individuals and groups in terms of status, power, and outcomes (e.g., income) in the workplace; understanding prejudice and social justice issues.

Faculty profile: uoguelph.ca/psychology/users/leanne-son-hing

Associate Professor | Human Health and Nutritional Sciences | College of Biological Science

Research interests: Clinical biomechanics and neurophysiology; chronic pain and joint function associated with aging and osteoarthritis, myofascial pain and fibromyalgia; the pathophysiologic mechanisms of myofascial trigger points; treatment of pain and joint/muscle dysfunction in chronic musculoskeletal disease.

Faculty profile: uoguelph.ca/hhns/people/dr-john-srbely

Associate Professor | Informatics Theme Lead, GBADs | Computer Science | College of Engineering and Physical Sciences

Research interests: Development, use and analysis of knowledge engineering and machine intelligence techniques (particularly ontologies), data-driven ontology evaluation and ontology development for simulation parameters.

Faculty profile: uoguelph.ca/computing/people/deborah-stacey

Adjunct Professor | Geography, Environment, and Geomatics | College of Social & Applied Human Sciences

Research interests: Indigenous environmental justice, environmental policy, resource governance and settler colonialism, mineral and uranium mining, taxation, and governance, Indigenous sovereignty, and political economies of settler colonialism.

Faculty profile: geg.uoguelph.ca/faculty/stanley-anna

Assistant Professor | Sociology and Anthropology | College of Social & Applied Human Sciences

Research interests: I leverage conservation biogeography, spatial ecology, and One Health approaches to understand how lemurs interact with and respond to human-caused disturbance. I am also interested in how humans are impacted by applied conservation measures targeting lemurs and their habitats. Specifically, I am interested in understanding the risk factors associated with zoonotic/anthroponotic transmission among humans and their domestic animals, wildlife, and their shared environment.

Faculty profile: socioanthro.uoguelph.ca/people/travis-steffens

Adjunct Professor | Integrative Biology | College of Biological Science

Research interests: Biodiversity research, conservation genetics, community ecology, farmland diversity, plant-pollinator interactions, multi-species population genetics, joint species distribution modelling.

Faculty profile: ecologicalgenomics.ca

Professor | Director, Live Work Well Research Centre | Jarislowsky Chair, Families and Work | Political Science | College of Social & Applied Human Sciences

Research interests:  The intersections of disabilities, gender, childhood, and Indigenousness; disability rights, disability policy, women and gender and politics, gender, and work.

Faculty profile: polisci.uoguelph.ca/people/deborah-stienstra

Live Work Well Research Centre: liveworkwell.ca/

Professor | Academic Director, NextAI | Engineering | College of Engineering and Physical Sciences

Research interests: My research spans a number of topics in deep learning. I am interested in open problems such as how to effectively learn with less labelled data, and how to build human-centred AI systems. I am interested in methodologies such as generative modelling, graph representation learning and sequential decision making. I also pursue applied projects that leverage computer vision to mitigate biodiversity loss.

Faculty profile: uoguelph.ca/engineering/content/faculty/graham-w-taylor

Associate Professor | Environmental Sciences | Ontario Agricultural College

Research interests: Environmental sustainability/resilience, agroforestry, soil health, water quality, carbon sequestration, tree-based intercropping systems.

Faculty profile: ses.uoguelph.ca/people/naresh-thevathasan

Assistant Professor | Engineering | College of Engineering and Physical Sciences

Research interests: Machine learning for medical imaging, deep learning, medical image analysis, image segmentation and registration, myocardial tissue characterization, analysis of Digital Histopathology, images, and computational modelling of the heart.

Faculty profile: uoguelph.ca/engineering/people/eranga-ukwatta-phd-peng

Assistant Professor | Molecular and Cellular Biology | College of Biological Science

Research interests: The Vahidi research group develops and applies state-of-the-art methods to investigate the structure, function, and dynamics of large biomolecular machines in order to solve problems of biological and clinical importance.

Faculty profile: uoguelph.ca/mcb/people/dr-siavash-vahidi

Professor | Integrative Biology | College of Biological Science

Research interests: Multifactorial regulation of ovarian function in teleosts, evaluation of reproductive fitness in fish, endocrine disruption in fish and amphibians. 

Faculty profile: uoguelph.ca/ib/vanderkraak

Professor | Research Program Director, Ontario Agri-Food Innovation Alliance | Co-Executive Director, Soils at Guelph | Environmental Sciences | Ontario Agricultural College

Research interests: Sustainable soil management, agriculture, cover crops, nitrogen biogeochemical cycling, soil health.

Faculty profile: ses.uoguelph.ca/people/laura-l-van-eerd

Associate Professor | Molecular and Cellular Biology | College of Biological Science

Research interests: signalling processes involved in disease and development, the Wnt signalling pathway, negative feedback regulators of Wnt signalling; Nkd1 and Axin2.

Faculty profile: uoguelph.ca/mcb/people/dr-terry-van-raay

Associate Professor | Sociology and Anthropology | College of Social & Applied Human Sciences

Research interests: Sustainability of resource dependant communities, power of marginalized groups in resource management, the interface between social science research and environmental policy, and community engaged scholarship. 

Faculty profile: socioanthro.uoguelph.ca/people/jeji-varghese

Associate Professor | Biomedical Sciences | Ontario Veterinary College

Research interests: Using geckos and other organisms to study mechanisms of wound healing, regeneration, and development, scar-free cutaneous wound healing, neurogenesis, spinal cord regeneration, and cardiac repair.  

Faculty profiles: ovc.uoguelph.ca/biomedical-sciences/people/faculty/Matthew-K-Vickaryous

Professor | Food Science | Ontario Agricultural College

Research interests: The significance of the dormant state in pathogens and how this contributes to temporal antibiotic resistance along with survival in the environment. Other research focuses on developing interventions to inactivate pathogens associated with fresh produce and meat. I am also on the Egg Farmers of Ontario SE Advisory board. 

Faculty profile: uoguelph.ca/foodscience/people/keith-warriner

Assistant Professor | Integrative Biology | College of Biological Science

Research interests: Behavioural and spatial ecology: social behaviour, habitat selection and parasitism in individual wild animals within a One Health framework. Implementing classic ecological theory (optimal foraging theory) with contemporary methods (social network analysis and habitat selection analyses) to test multiple competing hypotheses.

Faculty profile: uoguelph.ca/ib/node/1828

Quinn’s Website: qwebber.weebly.com

Professor | Pathobiology | Ontario Veterinary College

Research interests: Bacterial infections in animals and humans, methicillin-resistant staphylococcal infections, Clostridium difficile, antimicrobial resistance, emerging infectious diseases, infection control.

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Scott-Weese

Director, G. Magnotta Lyme Disease Research Lab | Molecular and Cellular Biology | College of Biological Science

Research interests: Lyme disease, tick-borne infections, bacterial pathogenesis, complex and chronic illness, host defences.

Faculty profile: gmagnottaresearch.com/the-team

Professor | Psychology | College of Social & Applied Human Sciences

Research interests: The neurobiology of cognition, memory acquisition, consolidation, reconsolidation, Alzheimer’s disease and schizophrenia.

Faculty profile: uoguelph.ca/psychology/users/boyer-winters

Associate Professor | Assistant Co-Director, Institute for Comparative Cancer Investigation | Pathobiology | Ontario Veterinary College

Research interests:  Pathology of neoplasia, multi-species comparative cancer genetics, biomarkers of cancer in dogs, mouse models of human cancer, cancer resistance in large, long-lived animals.

Faculty profile: ovc.uoguelph.ca/pathobiology/people/faculty/Geoffrey-Wood

Professor | Clinical Studies | Ontario Veterinary College

Research interests: Oncology and infectious disease.

Faculty profile: ovc.uoguelph.ca/clinical-studies/faculty/J-Paul-Woods

Associate Professor | Pathobiology | Ontario Veterinary College

Research interests: Gene therapy, vectored immunoprophylaxis (VIP), oncolytic virotherapy, viral vectored vaccines, viral pathogenesis.

Faculty profile: uoguelph.ca/pathobiology/people/faculty/Sarah-Wootton

Associate Professor | Marketing and Consumer Studies | Gordon S. Lang School of Business and Economics

Research interests: Automatic determinants of addictive, impulsive and compulsive consumer behaviour; Factors conducive to success and failures in self-control in the context of gambling and impulsive buying; Motivations for compulsive buying; application of nudging (choice architecture) to promote fruits and vegetables in mass eating contexts; Motives of meat reduction in flexitarians (e.g., health vs. sustainability concerns) and their choice of alternative protein foods; Improving sensory dimensions of FV-rich foods as a way of promoting healthy eating in an institutional food service setting.

Faculty profile: uoguelph.ca/lang/people/sunghwan-yi

Assistant Professor | CIFAR Global Scholar | Molecular and Cellular Biology | College of Biological Science

Research interests: Synthesizing probes modulating protein-protein interactions, engineering post-translational modifications to probe and rewire DNA damage signalling for cancer therapeutics, and improvement of CRISPR-based gene editing through directed evolution.

Faculty profile: uoguelph.ca/mcb/people/dr-wei-zhang

Professor | Engineering | College of Engineering and Physical Sciences

Research interests: Soil remediation technology -emphasis on SVE and bioventing, contaminant transport parameters, treatment of vegetable and fruit wash-water and residues.

Faculty profile: uoguelph.ca/engineering/content/faculty/richard-g-zytner

Postdoctoral Fellow | Environmental Sciences | Ontario Agricultural College

Research interests: Environmental microbiology, microbial ecology; metabarcoding, metagenomics and microbiome analysis; epidemiology, veterinary microbiology and parasitology, ecoepidemiology of vector-borne pathogens, host-microbiome-pathogen interactions.

Profile: ses.uoguelph.ca/people/dasiel-obregon-alvarez

Postdoctoral Fellow | Animal Biosciences | Ontario Agricultural College

Research interests: I am a postdoctoral researcher working in Christine Baes’ group on the Resilient Dairy Genome Project.  My research interests include working with genomic data to study genetic diversity and adaptation in domestic and wild animals. 

Profile: animalbiosciences.uoguelph.ca/abscpeople/crochus