Somewhere between a GPS coordinate and a patient health record, there is a research question that nobody has fully answered yet.
Where do disease outbreaks cluster and why? How does human mobility spread infection across neighborhoods? What patterns in location-based social media data can predict public health crises before they peak?
These are the questions that Dr. Tao Hu’s research group at Oklahoma State University is working on. And right now the group is looking for PhD students to help answer them with full funding attached.
At a Glance
| Detail | Information |
|---|---|
| University | Oklahoma State University |
| Position type | Graduate Research Assistant or Graduate Teaching Assistant |
| Funding source | NSF and NIH-funded projects |
| Eligible backgrounds | GIS CS Informatics Maths Statistics Epidemiology |
| IELTS TOEFL | Required for international applicants |
| Application method | Email Dr. Tao Hu directly |
| Deadline | Rolling, no fixed date published |
What GRA and GTA Actually Mean
These two position types come up constantly in US doctoral admissions and the distinction matters.
A Graduate Research Assistant GRA is funded through a research grant, in this case active NSF and NIH projects. Your time is primarily devoted to the research group’s work which directly feeds your dissertation.
A Graduate Teaching Assistant GTA involves supporting undergraduate instruction alongside your research. Teaching responsibilities vary by department but GTA positions are a standard and respected route to doctoral funding at American universities.
Both positions are fully funded. Both provide a pathway to a PhD at an R1 research university. The specific position offered will depend on available funding and departmental needs at the time of your admission.
The Research Why This Field Why Now
GeoAI sits at the intersection of geographic information science and artificial intelligence. Applied to public health, it means using spatial data, mobility patterns and computational methods to understand how and where health outcomes emerge across populations.
This is not theoretical territory. Funded by the National Science Foundation and the National Institutes of Health Dr. Hu’s projects are working on real public health challenges using tools that did not exist at scale a decade ago.
The group’s active research areas include:
- Geospatial big data analytics
- Human behavior and public health
- Location-based social media data analytics
- Geospatial Artificial Intelligence GeoAI
- Human mobility patterns
- Spatial epidemiology
For PhD students, the combination of federal funding and interdisciplinary scope means genuine research output. Papers, conference presentations and a dissertation built on work that matters beyond academia.
Who Fits These Positions
The research group welcomes applicants from several quantitative and technical backgrounds.
Relevant academic fields include:
- Geographic Information Systems GIS
- Computer Science
- Informatics
- Mathematics
- Statistics
- Epidemiology
- Related quantitative disciplines
Beyond the degree the group is specifically interested in candidates who bring:
- Proficiency in GIS software particularly ArcGIS Pro
- Comfort with quantitative research methods
- Programming experience
- Genuine interest in interdisciplinary research
For International Applicants
International students are explicitly welcomed.
In addition to the standard application materials, international applicants must provide TOEFL or IELTS results directly to Dr. Hu when making initial contact.
Before reaching out, make sure your English language documentation and academic transcripts are ready. First impressions in a direct faculty email matter, and sending an incomplete inquiry missing test scores or transcripts can delay consideration.
Review Oklahoma State University’s official graduate admissions requirements for your specific program before submitting anything. The university’s process runs separately from your initial contact with Dr. Hu.
The Research Plan and Document Most Applicants Underestimate
Four documents are required when contacting Dr. Hu:
- Current CV or resume
- Academic transcripts
- Research plan
- TOEFL or IELTS scores for international applicants
The research plan is the one that determines whether your application moves forward.
It needs to do two things clearly. First, communicate your specific research interests, not a general statement about liking GIS or finding public health interesting but a focused articulation of what questions you want to pursue and why. Second, demonstrate how your background connects to the group’s actual work in GeoAI, GeoHealth or geospatial big data.
Read Dr. Hu’s published research before writing a single word of your plan. Reference specific papers or projects. Show that you understand what the group is already doing and have thought carefully about where you could contribute.
A generic research statement sent to five different professors is immediately recognizable. A plan written for this specific research group is not.
Apply Now for Oklahoma State University PhD Positions
Application Deadline
No single application deadline has been published for these positions.
In practice, that means rolling review. Faculty reviewing applications for unfunded positions typically have less urgency. Faculty reviewing for positions tied to active federal grants, as these are filled when they find the right candidate.
Waiting carries real risk. A strong applicant who contacts Dr. Hu in August competes with fewer people than one who sends the same email in November.
Prepare your documents now. Send your initial email as soon as your materials are ready.
