The application of models of panel data analysis

Carrying out of econometric analysis by means of panel data models of the volume of innovative goods, works and services in the Russian Federation. The dependence on the number of personnel involved in scientific research and the internal expenses.

Рубрика Экономико-математическое моделирование
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The application of models of panel data analysis for the estimation of the volume of innovative goods, works and services in the Russian Federation

M. M. Tsvil

V. E. Shumilina

In recent years, in terms of sanctions policy from Western countries more and more attention in the Russian Federation (RF) is paid to the creation and sale of innovative goods and to the provision of innovative works and services.

As is known, innovations are the central factor of production and productivity growth. The emergence of innovations is directly connected with the development of science. Science provides the economy and society with highly qualified personnel, revolutionary technological solutions and new technical ideas for everyday practical usage. econometric analysis panel innovative

However, according to the report of the Russian Association of the science promotion (RASP) about the state of science in the Russian Federation, presented in 2013, the current state of the Russian science according to a number of objective indicators is characterized as catastrophic. One of the main reasons named was the organizational reason, i.e. the lack of a distinct state strategy in scientific and technical sphere. The problems of a lower level are arisen from this main problem, e.g. the rapid delay of Russia in the global field of scientific researches, the problem of reproduction of qualified scientific and engineering personnel, the problem of introducing of scientific and technical innovations into the production and their incorporation into the chain of sectoral and intersectoral economic connections (bringing to the final product and to the final consumer); hence the problem of low share of small and medium enterprises in the structure of high-tech production and low share of industries with high added value in the GDP structure. Consequently, there is no large-scale demand for scientific developments by private companies and that factor exacerbates all the above-described problems and leads to the development of negative tendencies in self-reinforcing spirals.

At the St. Petersburg international economic forum on June 16-18, 2016 at the session «Big challenges - the stimulus of science development» the participants of which were the leading scientists and organizers of domestic and foreign science, the Chairman of the Board of the managing company «RUSNANO» A. Chubais mentioned that «Science itself has not been demanded by the production, science disturbs production as it requires big changes from any production». In his opinion, innovative economy should become the connecting link between science and production: «We need not expect that the production will create a request for science. It is needed to consider the chain of three elements: science - innovation economy - production. The demand for science from the side of manufacturers can be provided by innovative economy».

At that session, the member of the Expert Council under the Government of Russian Federation, Ekaterina Shapochka, pointed out the large data amount in the modern world, which is difficult to process by means of traditional ways; the Chairman of one of the world's largest scientific publishers, Elsevier B. V., Ionsuk Chi, noted that the value of data was increasing when they were structured, and even more - when analyzed.

The actuality of this topic determined the purpose of the investigation described in the given article.

The object of study is the volume of innovative goods, works and services in the Russian Federation (RF) from 2010 to 2014 (The data of Federal Statistics Service[1]). The objective of the investigation is to build adequate and substantial models to examine the true cause-effect relations between the volume of innovative goods, works, services in Russia () in million rubles, and the explanatory variables: - number of employees involved in scientific research and development (person); - internal costs on scientific investigation and development of the Russian Federation in million rubles; - used advanced manufacturing technologies (units); - coefficient of inventive activity (number of domestic patent applications for inventions submitted in Russia per 10 thousand persons of population); - innovative activity of organizations (specific gravity of organizations in % carrying out technological, organizational and marketing innovations in the reporting year, in the total number of the surveyed organizations) in eight Federal districts.

The experience of the econometric methods is of great interest in terms of uncertainty. Econometrics has become a powerful tool of economic research, especially in recent years as a result of the development of computer systems and special applied programs. The constantly complicated social and economic processes have led to the necessity of econometric analysis usage. The study of these processes is carried out by means of econometric models. The majority of new research methods are based on the econometric models, concepts and techniques. The application of econometric methods towards the real Russian statistical data will allow to understand deeper the goals and objectives of the state economic policy (or the company) and also to learn how to evaluate the results of this policy [2 - 6]. One of the possible solutions is the usage of the panel data. The application of estimation methods of the paneldata to solve the formulated task seems to be reasonable as the temporary numbers data for Russia on the whole are insufficient to obtain good parameter estimations.

The panel data are those data, which contain statistical information about one and the same object set about for the number of consecutive time periods. Due to the structure the panel data allow to construct more flexible and substantial models and obtain answers to the questions that are unavailable only in the framework of models based on spatial data, for example. For economists, the panel data are valuable because it appears a possibility to consider and analyze the individual differences between the economic units that can't be done within the framework of standard regression models. Panel data models allow us to obtain more accurate estimated parameters [7 - 10].

In our case, the econometric analysis is based on panel data for the eight regions in the period from 2010 to 2014. The source of these data was the statistical data of the State Federal Service.

For the econometric models with panel data the empirical analysis begins with the choice between models with a common effect (pooled model) and models with fixed effects (fixed effect model).

Pooled model - is the usual linear regression model, which in matrix form looks like this:

, (1)

for the coefficients estimation of which the ordinary least-squares method (LSM) may be used.

In our case the built model on the basis of the panel data the pooled model (1) has the following form:

(2)

The absence in panel structure data and the possibility to receive consistent and effective assessments by means of the pooled sample with the help of LSM is formulated as a null hypothesis in F-test.

The determination coefficient of the given model (2) is . The dependence of from , , , , is characterized as close in which 82% of the volume variations of innovative goods, works and services is determined by the variation considered in the model factors: the number of personel involved in scientific research and development; internal expenses for the scientific research and development throughout the Russian Federation; the used advanced manufacturing technologies; inventive activity coefficient; innovative activity of organizations in eight Federal districts.

It is evident from the given model that the growth of volume of innovative goods, works and services is certainly positively influenced by a growth of the coefficient of inventive activity () and innovative activity of organizations (). With the values and equal to 1 and , , equal to 0, the volume of innovative goods, works and services is equal to 86958.022 million rubles.

With a significance level the coefficients , and are not significant according to Student's criterion. It is explained by the fact that only the Central Federal district has simultaneously significant coefficients of inventive activity and innovative activity of organizations.

Let's compare the pooled model with the fixed effect model allowing to estimate the influence of values of quantitative attributes in each region separately.

In matrix form the model looks like this:

, (3)

where .

The model (3) presupposes the introduction of dummy variables for the sample objects. The coefficients in dummy variables will give the valuations of the individual effects. Fixed effects model ensures the guaranteed receiving of unbiasedand consistent valuations. In our case, takes the value 1 for the data of the Central Federal district, for other districts it is 0; takes the value 1 for the data of the North-Western Federal district and for the other districtsit is 0; takes the value 1 for the data of the Southern Federal district and for other districts it is 0 etc.

Built on the basis of the panel data the fixed effects model has the following form:

(4)

The coefficient of determination of the model (4) is statistically significant. From the constructed model it is followed that the factor is mainly positively influenced by the internal costs (), innovative activity of organizations (), the coefficient of inventive activity ().

So, for the Central Federal district the model (4) has the following form:

, (5)

where , .

For The North-West district the model has the following form:

(6)

where , .

For the South district the model has the following form:

(7)

where , .

For The North Caucasus district the model has the following form:

, (8)

where , .

For the Privoljski district the model has the following form:

, (9)

where , .

For the Ural district the model has the following form:

, (10)

where , .

For The Siberian district the model has the following form:

, (11)

where , .

And for the Far -Eastern district the model has the following form:

(12)

where , .

Thus, the practical significance of the models (5-12) is that it will allow to predict and calculate the volume of innovative goods, works and services taking into account the number of personnel involved in scientific research and development; internal costs for the research and development; used advanced manufacturing technologies; coefficient of inventive activity and innovation activity of organizations in each of the above mentioned regions of the Russian Federation.

Notes: In the course of writing of this article on the site of Federal State Statistics (Official Rosstat Statistics [1] ) there have appeared the actual data for the year 2015, according to which, the meaning , for example, for the Central Federal district was 1491536.1 million rubles, and the prognostic value according to the model (5) in accordance with the data of 2015 was 1562198.7678 million rubles, that evidences about the high prognostic quality.

On the basis of the above mentioned it is possible to make a conclusion that the innovation development has the great influence on the economic development of the Russian Federation under present-day conditions. The volume increase of the innovative goods, works and services is positively influenced by the innovation activity of organizations, inventive activity and domestic costs on research and development.

References

1. Dannye Federal'noy sluzhby gosudarstvennoy statistiki. URL: gks.ru/wps/wcm/connect/rosstat_main/rosstat/ru/statistics/science_and_innovations/science/.

2. Tsvil' M.M., Kolesnikova I.V. Inћenernyj vestnik Dona (Rus), 2016, №4 URL: ivdon.ru/ru/magazine/archive/n2y2016/3591.

3. Tsvil' M.M., P'yanova Yu.S. Aktual'nye problemy gumanitarnykh i estestvennykh nauk, 2016. № 6-2, pp. 96-99.

4. Tsvil' M.M., Shumilina V.E. Inћenernyj vestnik Dona (Rus), 2014, №4 URL: ivdon.ru/ru/magazine/archive/ N4y2014/2555.

5. Tsvil' M.M., Shumilina V.E. Inћenernyj vestnik Dona (Rus), 2015, №2, URL: ivdon.ru/uploads/article/pdf/ivd_10_Tsvil1.pdf_ebd0610868.pdf.

6. Tsvil' M.M., Shumilina V.E. Inћenernyj vestnik Dona (Rus), 2014, №1 URL: ivdon.ru/ru/magazine/archive/n1y2014/2241.

7. Baltagi B.H. Econometric Analysis of Panel Data. B.H. Baltagi. 3rd Edition. Chichester: John Wiley &Sons, Ltd, 2005, 356 р.

8. Matyas L. The Econometrics of Panel Data. Fundamentals and Recent Developments in Theory and Practice. L. Matyas, P. Sevestre (eds.). 3rd Edition, 2008, Berlin, Springer, 955 p.

9. Ekonometrika: uchebnik dlya magistrov [Econometrics: the manual for masters], I.I. Eliseeva [i dr.]; pod red. I.I. Eliseevoy. M.: Izdatel'stvo Yurayt, 2012. 453 p.

10. Greene W.N. Econometric Analysis. W.H. Greene. 4th Edition. New Jersey: Prentice Hall, 2002, 272 р.

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