Before Harrod’s economic growth theory, Marx advanced his theory of expanded reproduction on the relationship between savings and economic growth. Marx’s two sectors model was more complicated compared with Harrod’s one sector model and was confirmed by some authorities among western scholars.

The paper consider that dual economic lies in the difference in level of labor division of two sectors,and the transform tendency of dual structure should be explained from the viewpoints of labor division.

4) the footprint of the 3~rd sector took up a very low share of the total(4.5%～5.4%) and its ecological intensity is much lower than the other two sectors (about 1 hm\+2/×10~4 Yuan), but the footprint of this sector increases fast and its eco-efficiency improves slowly;

Basing on the method about running CGE models in EViews given by B.Essama-Nssah(2004), chapter 2 builds a CGE model for Chinese open economy,which includes one country, two sectors of production and three kinds ofgoods(exports, domestic goods and imports).

The reasons for not application of syndrornic management could be divided into two sectors, i.e., providers' rea-sons(347 cases, 44.1 % )and patients' reasons(421 cases, 53.5 % ).

It allows for both simultaneity in the determination of income and safety and structural differences in their determinants across the two sectors.

Formalization and collectivization are present in nonunion as well as union labor markets and their extent varies within as well as between these two sectors.

Specifically, the paper shows that an increase in the nominal Federal Funds rate affects unemployment much more severely in two sectors and in two broad occupational groupings than it does in the others.

There are two sectors along latitude 50°N, which are sensitive to forcing by geomagnetic storms both in total ozone and the troposphere - north-eastern Atlantic-European and eastern Siberia-Aleutian sectors.

However, the findings imply that in the future analysis it is also important to consider the effect of the regional availability of educated and experienced work force on plant start-up size in these two sectors.

A mathematical model for reproduction in "Two Large Sectors" based on Marx' theory of reproduction is developed. The model is characterized by the fact that the physical balance equations for consumption means and the conditions for exchange of equal values between the two sectors are realized.The mathematical model is based on linear production set using difference equations to describe the dynamic processes of production, exchange and consumption of two sectors. As the reproduction model is a simplified...

A mathematical model for reproduction in "Two Large Sectors" based on Marx' theory of reproduction is developed. The model is characterized by the fact that the physical balance equations for consumption means and the conditions for exchange of equal values between the two sectors are realized.The mathematical model is based on linear production set using difference equations to describe the dynamic processes of production, exchange and consumption of two sectors. As the reproduction model is a simplified version of social reproduction, its mathematical counterpart may serve as a convenient means for analyzing the general tendency of social economic development.Discussions are focused on the relationship between the accumulation rate and the growth rate of two sectors and incidentally provides a satisfactory explanation of the "high accumulation, low growth" phenomenon. It is found that the total accumulation rate that keeps the economy in balanced growth is uniquely determined by the output ratio between the two sectors. Unless a rational accumulation rate and a rational output structure are maintained, a high accumulation rate will not possibly bring about a high growth rate.

The comparison of the monthly median value of the f0F2 for two stations with similar geomagnetic latitude but different longitude has been made. The differences of the monthly median value of- the f0F2 in the ionosphere observation chains in the east of China and in Japan have been found. All of these can be used to investigate the longitudinal variation of the equatorial anomaly in East Asia. The results are these: In winter, the equatorial anomaly in east of China sector is weaker than that in Japan sector;...

The comparison of the monthly median value of the f0F2 for two stations with similar geomagnetic latitude but different longitude has been made. The differences of the monthly median value of- the f0F2 in the ionosphere observation chains in the east of China and in Japan have been found. All of these can be used to investigate the longitudinal variation of the equatorial anomaly in East Asia. The results are these: In winter, the equatorial anomaly in east of China sector is weaker than that in Japan sector; but in summer, the equatorial anomaly in east of China sector is stronger than that in Japan sector; The end latitude of the northern crest for two sectors in summer are larger than that in winter.

Urbanizatkin, as a company of industrialization, is a general process in the world economic development. After the World War Ⅱ, this process began to accelerate in developing countries and continues rapidly today. The author develops a theoretical model in this articles to explain the different urbanization ways between developed and developing countries. Based on the two sectors analysis, the author examines the main factors that encourage or restrain labor force mobility between rural and urban areas...

Urbanizatkin, as a company of industrialization, is a general process in the world economic development. After the World War Ⅱ, this process began to accelerate in developing countries and continues rapidly today. The author develops a theoretical model in this articles to explain the different urbanization ways between developed and developing countries. Based on the two sectors analysis, the author examines the main factors that encourage or restrain labor force mobility between rural and urban areas and sets up the balance as well as unbalance models. This theory can explain the unbalanced situation in China's urbanization and understanding the impact of population policy as well as industrial development Policy.