Moris approached problems from the point of view of both economics and control engineering. The volume contains papers by Moris colleagues Fumimosa Hamada and Kiroyuki Kosaka, who interpreted and analyzed Kei Mori's dynamic models. In addition Mitsuo Saito and associates discuss dynamic properties of asset-market models. The book is rounded off with active discussions by leading Japanese economic scholars, and a reprint of one of Kei Moris original works in econometrics.