Feasibility and optimality of the initial capital stock in the Ramsey vintage capital model

2014 ◽  
Vol 52 ◽  
pp. 40-45
Author(s):  
Franklin Gamboa ◽  
Wilfredo Leiva Maldonado
Author(s):  
E. Flytzanis ◽  
Nikolaos S. Papageorgiou

AbstractIn this paper we consider an infinite horizon, continuous time model of economic growth. We prove two theorems; one on the existence of optimal paths of capital accumulation and the other on the dependence of the set of optimal paths on the initial capital stock (sensitivity analysis). In the existence result the underlying technology set is nonconvex and only its “investment’ slices are convex. The proof is direct, without any use of necessary conditions. In the sensitivity analysis, the technology set is convex and so we have that the value function is concave. Then having that, we show that the set of optimal paths is an upper semicaontinuous multifunction of the initial capital stock.


1983 ◽  
Vol 15 (9) ◽  
pp. 1151-1159
Author(s):  
T Miyao ◽  
K Nishimura

The authors analyze the problem of optimal development strategies in a labor-surplus economy, where manufacturing production is subject to a convex-concave production function. Our contribution is to provide a rigorous proof of the existence of a critical value of capital such that industrialization is optimal if the initial stock of capital is above the critical value, whereas nonindustrialization is optimal if the initial capital stock is below the critical value.


2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Gordana Djurovic ◽  
Vasilije Djurovic ◽  
Martin M. Bojaj

Abstract This study examines, diagnoses, and assesses appropriate macroeconomic policy responses of the Montenegrin Government to the outbreak of COVID-19. The model econometrically measures the macroeconomic costs using a Bayesian VARX Litterman/Minessota prior to the pandemic disease in terms of demand and supply loss due to illness and closed activities and their effects on GDP growth in various pandemic scenarios. We explore five economic scenarios—shocks—using the available data from January 2006 to December 2019, following real out-of-sample forecasts generated from January 2020 to December 2020. Sensitivity scenarios spanning January 2020 to June 2020 from ± 10 to ± 60% were analyzed. We observed what happens to the supply and demand sides, namely, GDP, tourism, capital stock, human capital, health expenditures, economic freedom, and unemployment. The results show a toll on the GDP, tourism, unemployment, capital stock, and especially human capital for 2020. The recommended policy measures are public finance spending initiatives focused on securing employment and keeping highly qualified staff in Montenegrin companies. Considering all uncertainties, the rebound of the Montenegrin economy could take a few years to reach pre-COVID 19 output levels.


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