Dairy Herd Improvement. Official DHI type of testing plan that requires supervision and compliance with all Official DHI Rules (DHI abbreviation is used commonly to designate the testing plans).
The Higher Mind as in the Gayatri Mantra-dhiyo yo nah prachodayat. It is the divine mind contrasted with the Buddhi which may be said to be the Prakritic mind. Dhyana obviously refer to this shift from the Prakritic mind to the divine mind.