This essay puts forward the new argument that the scope of educational economic value is the theoretical basis of the scientific system of modern education.

Evaluation of economic value of river ecosystem service functions in China;

Study on the estimation of the economic value of human life in accident;

Analyzing economic value of information of diseases records from information economy;

Then the working goal,important points and practical steps are expounded in detail,as well as keeping the long-standing and effective operational precision of equipments,improving the productive efficiency,keeping the product quality stabilization and promoting economical value created by the management and marketing.

The paper introduces the health function and economical values of Vaccinium ssp.

This paper primarily studies on economical value of natural eco-system based on the emergy theory and focusing on the Xuebaoshan natural eco-system in the south slope of the Daba Mountain.

Through a large number of beaker tests,we have compared their purifying effects and economic worth,and bioflocculation is better.

Then it carries on the deep analysis to economic worth and risk of reverse logistics, and carries on preliminary discussion to the reverse logistics basic tactics of management.

The paper first has overviewed the timber energy development and its economic worth, then it analyzes the influence of the economic, technological factor of timber energy production and consumption to the developing countries and the developed ones separately, and has explained policy goals and objectives that various countries develop timber energy industry.