Software Details:

• MATLAB (7.9)
• Simulink (7.4)
• All available toolboxes (e.g., Optimization, Statistics, Neural Network)

4.3 Reproducibility in Academic Research

Many PhD theses from 2010–2015 included MATLAB 2009b code with specific random number generation seeds or toolbox functions that behave differently in modern releases. To replicate results, researchers need the exact ISO.

• No string type (only char arrays)
• No datetime or duration native types
• Outdated graphics engine (default javacomponent figures)
• No support for modern file formats (Parquet, HDF5 1.10+)

• Former customers: Log into your old MathWorks account; perpetual licenses for R2009b are still downloadable.
• University archives: Many institutions have site licenses that include archived releases.
• Second-hand license transfers: MathWorks allows license ownership transfer for a fee.

Simulink Improvements: R2009b brought "Protected Models," allowing users to share model functionality without exposing intellectual property, and introduced tabs in the Mask Editor . System Compatibility (2009 Era)

• Windows XP SP3 / Windows Vista / Windows 7 RC
• 1 GB RAM minimum (3+ GB recommended for large problems)
• 2 GB disk space (full install up to 4 GB)
• 1024×768 display
• Optional: NVIDIA GPU with CUDA 1.3+ for Parallel Computing Toolbox

Multicore Performance: Improved support for parallel computing and multi-threaded operations when used with the Parallel Computing Toolbox. System Requirements (Windows)

The ritual begins. The tray of the PC slides out with a mechanical wheeze. Elias drops the ISO-burned disc into place. Spin. Whirrr. Silence.