Computing

Quick tutorial on configuring exim and email packages in Cygwin to send emails from Windows command line via SMTP server without authentication.

Converting regular panoramas to small-world fisheye style using coordinate transformation from rectangular to polar coordinates, with nonlinear radius mapping to control the virtual camera height.

Benchmarks comparing MATLAB, Python, C#, and C++ for scientific computing tasks, finding C# offers a good balance between development speed and runtime performance.

Beamer Writer update with equation support using [x^2] syntax and simplified figure insertion using [[fig.png]] notation.

How to use GitHub Pages and git branches to host paper reading seminars: keep compiled slides in master branch, source code in another branch, with automatic download links and version control.

Explores F# for implementing domain-specific languages, demonstrating turtle graphics and fractal generation with elegant syntax, async support, and parallel computing capabilities.

Convex optimization as a powerful modeling language: express problems as objectives and constraints, then solve efficiently. Demonstrated with image denoising using CVX.

Demonstrates automatic CAPTCHA recognition using image binarization, digit splitting, and K-nearest neighbor classification, achieving perfect accuracy on EMS package tracking system.

How to run ASP.NET 4.0 applications on Debian/Linux using nginx and Mono FastCGI, with practical migration tips and filesystem considerations.

Collecting mouse positions throughout the day and visualizing them as heatmaps reveals user behavior patterns that could potentially be used for person identification.