Great Polar Fist and the Book of Change - this paper originally appeared in print in the Spring 2004 edition of Tai Chi Chuan & Internal Arts, the journal of the Tai Chi Union for Great Britain, pp14-17. It looks at the connections between the martial art Taijiquan, which is based on the use of yin and yang in the domain of physical movement and self-defence, and the Yi Jing, which explores yin and yang in terms of cosmology and situational analysis. The basic conclusion is that there are connections, but these connections exist at the deep levels of the two practices, rather than at their superficial levels.
In addition there are two short notes from a workshop exploring alternative connections between the symbols of Change and the physical jin of Taiji. I don't know it they make much sense without having attended the workshops, but...