English

Reflects on simplifying time management from complex Emacs org-mode systems to pen-and-paper todo lists, finding that simpler tools lead to better focus and clearer thinking.

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.

Switching from iPhone to Lumia 900: smooth Windows Phone experience, excellent keyboard input, tile interface, but limited app ecosystem and IE10 shortcomings.

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

Restarting the blog with morning reading habits, jogging goals, and budget planning—small steps toward a more disciplined life.

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