by PĂUNA, Bianca, Ion GHIZDEANU, Cornelia SCUTARU, Petre FOMIN and Corina SÂMAN
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The macromodel estimates the short and medium-run economic
implications for internal policies and of changes in the international context.
This new version of the Romanian macromodel incorporates the experience
accumulated through the utilisation of its previous forms - either experimental
(tested during 1991-1995) or operational (developed during 1996-2003). At the
same time, it introduces some methodological and information improvements.
The most significant of them is the structural decomposition of
economy, associated with input-output techniques. Output and absorption are
divided into: a) agriculture, sylviculture, forestry, hunting, and fishing; b)
mining and energy; c) manufacturing industry; d) constructions; e) transport,
post and communications; f) trade and services. These can be easily translated
into classical three-sector classification: primary (a-b), secondary (c-d), and
tertiary (e-f).
Due to the relatively advanced stage of the transitional
processes in Romania, the behavioural functions were accommodated - as much as
possible - to the standard relationships. Unlike versions that used the
statistical series beginning with 1980, the present one is based exclusively on
information concerning the period 1989-2004.
Therefore, we have considered more adequate to name this variant
the macromodel of the Romanian market (not transition, as before) economy. Since
the input-output tables are defined yearly, the model contains only annual
indicators. They are expressed in denominated local currency (RON). When there
were several statistical sources for the same indicator, we preferred the data
extracted or derived from national accounts.
The statistical series are relatively short and often fractured
(because of the transforming processes of transition). It is known that ADF test
of stationarity does not offer sure results in the case of limited number of
observations. Nevertheless the series satisfying it were used, as a rule. The
Granger causality test was computed for one, two, and three lags. The simplest
methods of estimation were also preferred. The structural breaks in the
evolution of some indicators have been attenuated by the inclusion of dummies.
Obviously, all these circumstances weaken the stability of econometric
coefficients that must be continuously updated. The main relationships are
grouped in seven sections: input-output block; labour market, production
function; domestic absorption, foreign trade, prices and exchange rate, and
interest rate.
Key-words: model, input-output analysis, econometric
relationships, simulations
JEL Classification: C5, E2-E6, H6