How does TU Delft define non-commercial use?
A non-commercial use is one that does not involve the assessment of a direct or indirect fee for use of the TU Delft OCW materials, or any derivation or modification of the TU Delft OCW material, or any other commercial exploitation of TU Delft OCW materials. All uses, reuse, and distribution of TU Delft OCW material, including works derived from TU Delft OCW material, must be attributed to TU Delft OCW and to the original authors where identified on the TU Delft OCW materials you distribute.