Rank in Judo are ranked in ascending numerical order. The ninth ("kudan") and tenth degree black belt ("jūdan") and, theoretically, those higher, have no formal requirements. Only 15 individuals have been promoted to the rank of Kōdōkan 10th dan. On January 6, 2006, three individuals were promoted to this rank simultaneously: Daigo Toshirō, Ichirō Abe, and Ōsawa Yoshimi. This is the most ever at the same time, and the first in 22 years. No one has ever been promoted to a rank higher than 10th "dan", but in theory the Judo rank system is not limited to 10 degrees of black belt. The
Judo in Canada at the University of Ottawa, "Influences on the development of beliefs of Canadian expert judo coaches and their impact on action" (1998), describes the beliefs of Canadian Judo coaches and how these beliefs were represented in their actions during training. And finally, Michelle Rogers' MA thesis in Anthropology at the University of Victoria, "Twentieth Century Travels: Tales of a Canadian Judoka" (2005), examines the life of her father, Olympian Doug Rogers, and uses his story as a case study of how large-scale global processes can influence the life of an individual. Judo has not received widespread attention in Canadian television