The study concentrated on demonstrating how non-linear modelling can be useful to investigate the behavioural of dynamic economic systems. Using some adequate non-linear models could be a good way to find more refined solutions to actually unsolved problems or ambiguities in economics. Beginning...

Using some special models, this study tries to quantify the size of underground economy in Romania. The exposition plan includes: 1) Models based on direct approaches; 2) Models based on indirect approaches; 3) A generalised model for the allocation of time; 4) A model based on May’s logistic;...

Many problems emerge since it is widely believed that high tax rates and ineffective tax collection by government are the main causes contributing to the rise of the informal economy. Already the economists have established a relationship between tax rates and tax evasion or size of the informal...

Using a Romanian household survey, we analyse the structure of households’ income by sources: main job, secondary job, and informal activities. We began the study by focusing on data and methodological problems, certain clarifications being necessary. Then we estimated the size of informal...

This study tries to quantify the impact of transition in Eastern countries in an early stage on the cost-side and also on the benefit-side. The exposition plan includes: 1) Introduction; 2) Structural distortions; 3) Transition versus stability.

The study is focused on estimating the informal economy in Romania based on survey in households. Moreover, some specific dynamic models to simulate complicated types of household’s behaviour (regimes) relating to participation in informal economy are presented.

At the beginning of the transition period, the public debt in Romania was insignificant. However, during the following years, the accumulating process accelerated. Although the indebtedness degree continues to be smaller than registered levels in other European countries, more dangerous could be...

In order to obtain plausible scenarios of economic development in Romania up to the 2015 horizon, we used a mix of forecasting models, from ones classified as “medium-term” to those covering longer forecasting periods. Based on the analysis of the economic transition period we mainly used...

As asserted in standard literature, there is an implicit circular relationship between the productivity growth and the potential level of production (and, consequently, the estimation of the natural rate of unemployment is also altered). In order to avoid such emerging impediment in any...

The paper analyses the dynamics and structure of GDP in Romania during the transition period. Starting from the classical Cobb-Douglas production model, the paper investigates different scenarios for the Romanian economy on the basis of different assumptions regarding the model’s parameters....