SZACOWANIE WPŁYWU ZMIAN PRZEPISÓW PRAWA NA LICZBĘ PODMIOTÓW GOSPODARCZYCH. MODEL EKONOMETRYCZNY Z CIĄGŁYMI ZMIENNYMI IMPULSOWYMI
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Date
1998
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Wydział Prawa i Administracji UAM
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ESTIMATION OF INFLUENCE OF CHANGES IN LAW ON A NUMBER OF ECONOMIC SUBJECTS. ECONOMETRIC MODEL WITH CONSTANT IMPULATORY VARIABLES
Abstract
The article indicates two approaches of modelling changes in number o f economic subjects as
a result of changes in law:
— issuing from zero-one variables,
— issuing from constant impulsory variables.
The second approach was described quite in detail, and more particularly - one o f its variants
where a number of economic subjects generated in function of a given legal disposition increases
accordingly to a power.
Y — ^¡^CLzIx + Cta ,
X
where:
1 _ ÍT01 for i>x
0 for t < I
T = (i - X + 1); t - date of entering into force of a legal disposition.
This model was illustrated with an example relating to fluctuation o f the number of accountancy
offices in Bydgoszcz in relation with changed law on economic activities in the period from 1
quarter of 1990 to 4th quarter of 1997. The model obtained suits veiy well to empirical data -
determination factor was up to 99,9 per cent.
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Ruch Prawniczy, Ekonomiczny i Socjologiczny 60, 1998, z. 3-4, s. 315-331