Alexander Xu.

Incoming Math & CS @ Stanford

Currently building
Wildfire smoke data tools Voronoi healthcare optimization BTPHub neighborhood care platform Climate policy and school electrification
Alexander Xu
Focus Apps, research code, and tools for climate, health, and local communities.

Research

Cryptography, public-health data, and healthcare systems work across university research settings.

Quantum-Resistant Encryption Schemes with Rings

Conducted at Stanford University Mathematics Camp

Studied post-quantum cryptography at Stanford SUMaC through Ring Learning with Errors (Ring-LWE) and lattice-based encryption, connecting abstract algebra and number theory to the security assumptions behind quantum-resistant systems.

Paper in Progress

Optimization of Healthcare Systems with Voronoi Diagrams

Conducted at Georgia Southern University

Modeled healthcare facility access with Voronoi diagrams, weighted k-means clustering, and Atlanta-area data. Added population density, patient choice, and health-risk factors to a scoring framework, then tested iterative optimization algorithms for improved facility placement.

Read paper

Wildfire Smoke Data Access

Conducted at Emory University School of Public Health

Joined Emory's wildfire modeling team for data processing and grew into a core technical contributor. Built pipelines for decades of satellite and surface-monitor data, wrote XGBoost code for smoke prediction models, and co-authored a conference poster on wavelet-decomposed observations and machine learning presented at the ISES-ISEE 2025 Joint Conference.

Open Smoke Aware

Projects

Apps, tools, and websites built across research, startup, and nonprofit work. Click a skill below to highlight related work.

Smoke Aware app preview
App + Data/AI Congressional App Challenge 2nd Place

Smoke Aware

A public web app that makes wildfire smoke datasets, forecasts, and AI-assisted analysis easier to access.

Details

Problem

Wildfire smoke research depends on public satellite, monitor, and weather data that is difficult to extract and compare across sources.

Approach

Built a Next.js/React app with Firestore, Google Maps API, OpenAI API, and Python collection scripts to expose data workflows from Emory smoke modeling research.

Impact

Won 2nd place in the Congressional App Challenge and turned research tooling into a public-facing product.

Map visualizationLocalized forecastsDataset builderAI insights
  • Aggregates real-time and historical wildfire and air-quality data from public sources including WRCC and EPA.
  • Supports zip-code based pollutant forecasts and hourly air-quality insights.
  • Includes tools to fetch, preview, and download datasets for research workflows.
  • Uses an AI assistant to help users interpret wildfire, smoke, and climate data.
Public dataPython ingestionFirestoreNext.js UIAI insights
Voronoi research cover
Research + Modeling Manuscript drafted + poster presented

Voronoi Healthcare Optimization

A modeling project using Voronoi diagrams, weighted k-means, and Atlanta-area data to study public health facility access.

Details

Problem

Healthcare access depends on where facilities are located, but simple distance maps miss population density, patient choice, and risk factors.

Approach

Built Python simulations using Voronoi diagrams, weighted k-means clustering, and iterative adjustment algorithms on Atlanta-area data.

Impact

Drafted and submitted a manuscript, presented a poster at the 2025 Georgia Tech Research Symposium, and placed 2nd in Mathematics at the Fulton County Science Fair.

Data cleaningVoronoi generationClusteringEvaluation
  • Modeled health facility service regions using real-world Atlanta-area data.
  • Expanded the scoring system with population density, patient decision-making, and health-risk factors.
  • Used weighted k-means and iterative adjustment to test optimized facility placement.
  • Documented the work in a LaTeX manuscript with source code available in the repository.
Atlanta dataRisk scoringVoronoi cellsWeighted k-meansAccess model
BTPHub product preview
Startup + Full-Stack App 80+ neighborhoods, 1K services completed, 100+ pages/components

BTPHub

A neighborhood-centered care platform for finding trusted childcare, pet care, and senior care providers nearby.

Details

Problem

Families need trusted local providers, while providers need easier ways to share availability and manage requests.

Approach

Built product flows across Vue, JavaScript, C#/.NET Core, .NET Aspire, Azure SQL, Postman, SendGrid, and Figma.

Impact

80+ neighborhoods registered, 1K services completed on the platform, and 100+ frontend components/pages.

Provider availabilityBooking requestsNeighborhood trustEmail flows
  • Co-founded the startup and led technical development across planning, milestones, and product direction.
  • Built frontend screens and product flows for customers and providers.
  • Used SQL databases, APIs, and JavaScript frameworks to support scheduling and booking workflows.
  • Designed around neighborhood trust so families can find providers in their own communities.
Vue frontend.NET APIAzure SQLSendGridBooking flows
BNT Foundation website preview
Web + 3D Interaction $30k+ raised, 20+ volunteers, 7k+ event attendees

BNT Foundation Website

A nonprofit website for BNT Foundation, supporting community initiatives, events, and donation/contact flows.

Details

Problem

The nonprofit needed a clear public site to explain initiatives, route donations and contact, and build trust around patient-support work.

Approach

Built a Next.js/React site with interactive 3D sections, REST API integrations, SendGrid, and PayPal.

Impact

Supported a nonprofit that raised $30k+ for specialized bras for breast cancer patients and helped sponsor a community event with 7,000+ attendees.

3D heroDonation flowContact flowStorytelling
  • Designed and built the BNT Foundation website from scratch using Next.js and React.
  • Created interactive hero sections with 3D/WebGL techniques using Spline and Three.js concepts.
  • Integrated REST APIs including SendGrid and PayPal for key user interaction flows.
  • Organized nonprofit content around breast cancer patient support, supply logistics, local partnerships, and community events.
Next.js pages3D visualsREST APIsSendGridPayPal

Skills

Core technical areas used across research, apps, and product work.

Software Engineering

Data, AI, and Modeling

Math and Research

Awards

Selected national and technical distinctions.

Samsung Solve for Tomorrow National Finalist

Top 10 team + $50,000 prize

USA Mathematical Olympiad Qualifier

USA(J)MO Qualifier + 4x AIME Qualifier

USA Physics Olympiad Semi-Finalist

USAPhO Semi-Finalist

Congressional App Challenge Second Place

Recognized for Smoke Aware

USA Computing Olympiad Gold Division

USACO Gold