buletin ştiin ific - Facultatea de Stiinte Economice - Universitatea din ...

Employment of labor in models of economic growth∆k = i - (n + δ) × kThus, leading to increased investment k, while depreciation and population growthdecline k. The term (+ n) × k represents the investment required to keep the stock of capital /worker constant. δ × k expresses the investment necessary to cover depreciation of capital, andn×k measured investment needed to equip new workers with capital.k = s × f (k) - (n + δ) × kOn a constant base, an increase of the population (n 2 > n 1 ) leads to the capital / workerreduction from k 1 * to k 2 *.y i t tδ(2δ + n )xk(1δ + n )xk∗i1∗i2sxf(k)k∗k2Figure no.1 Population growth in the Solow modelk∗1This situation explains why countries with a high population rate of growth had a lowerlevel of capital / worker and therefore a lower income. That's why programs to combat povertythat the World Bank promoted in developing countries aim at reducing fertility by increasingeducation, methods of birth control, etc.Given that the basic assumptions made in theoretical monosectorials models typesmentioned, most multi-sector (Shinkai, von Neumann, Tinbergen etc.) present interest, especiallyfor new methodological elements that make them and that the latest introduce the idea ofstimulation of Economic development is regarded as an infinite time.Finally, mention the contributions made by model-type input-output (Leontief, O. Lange,Almon, Cambridge model), which allow estimates of the structure necessary manpower.In the former socialist countries, needs planning have resulted in the development of avariety of models, in which employment is usually regarded as a resource base in the effort toachieve economic goals. From our point of view, a place under the model developed by MichaelKalecki is to be mentioned.84