I am writing my dissertation on "Visualization-Driven Data Aggregation", digging deep into several data management topics, such as dimensionality reduction, data aggregation, and relational algebra, but also in computer graphics topics, such as line rendering, line simplification, and data visualization in general. I publish scientific papers on top-level conferences, such as VLDB.
Open Source Software
I am not involved in any OSS project, but I use and advocate OSS for my job and at home. The two most important gems of open source software that I currently rely on are LyX and Inkscape. I use them for literally everything.
Q&A for professional and enthusiast programmers
Q&A for computer enthusiasts and power users
Q&A for users of TeX, LaTeX, ConTeXt, and related typesetting systems
Q&A for power users of Apple hardware and software
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for Ubuntu users and developers
Q&A for people interested in statistics, machine learning, data analysis, data mining, and data visualization
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for power users of web applications
Q&A for system and network administrators
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Stack Exchange Network staging zone, where users come together to build new Q&A sites