However, when labor productivity rises, the materialized production commodity materialized labor and living labor are to increase, so labor capacity of production commodity is able to increase.

With the materialized force and Labour force in the process of sci-tech periodicals reproduction as the starting point of studying, the value structure of academic sci-tech periodicals is analyzed.

Materialized labor is dead labor. Only living labor possesses the dual properties of labor, and involves the problem of abstract labor that creates value.