Array ( [0] => Array ( [title] => L19A [link] => https://www.youtube.com/embed/ECsNQnm8bTU ) [1] => Array ( [title] => L19B [link] => https://www.youtube.com/embed/WoBpnK77-EU ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - Lecture 19 | Spectral effect of large delays; Example: Neutral differential difference equations