The Canon of Judo The Canon of Judo The Canon of Judo is a book that was originally published in 1956, and written by Kodokan 10th dan, Kyuzo Mifune (1883-1965). The book covers almost all of the Kodokan recognized techniques, adds variations and new techniques, including Do-Jime in passing as well. The book also describes fifteen Kata developed by Mifune to teach adaptation through reversal and counters. The book organizes the techniques differently from the official Kodokan Gokyo. This book is based on new and revised material by the author made between the original publish date and the authors death. The original book, "Canon
Dan (rank) always use the term Duanwei. Korean martial arts lacked a grading system up until the Japanese occupation (1910–1945) during which a variety of Japanese martial arts were introduced into the Korean school system, most notably judo, karate-do and kendo. After the occupation ended, newly emerging martial arts like taekwondo, tang soo do, soo bahk do and hapkido adopted the dan (단, 段) and "geup" (급, 級) ranks. The dan rank system is also used by "baduk" players. Nowadays, the Korea Taekkyon Association also issues dan ranks to "taekkyeon" practitioners. Someone who has received a dan rank is called a "yudanja"