Abstract: Up to now, there is no systematical quantitative method to evaluate the structural and operational effectiveness of different manufacturing resource organization modes. Based on the concept of order degree and the principle of the information entropy, for different manufacturing resource organization modes, structural and operational entropy models are developed to evaluate the order degree of structure and operation, respectively. The structural entropy model presents both the time effect entropy and the quality entropy, while the operational entropy model covers both the static and dynamic operational entropy. A case study is given to test the method. By using the proposed method, it evaluates the structural and operational effectiveness for a manufacturing workshop under two organization modes:  before and after the implementation of a dynamic cellular organization．Results show that, by reasonable planning and scheduling of the system, the dynamic cellular organization mode can enormously reduce material delivery requirements and equipment idle time. Thus, it has high order degree and high productivity.

Key words: dynamic cell, manufacturing resource organization, structural entropy, operational entropy, order degree