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- Andersson, Martin, et al.
(författare)
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Dynamics of Entry and Exit of Product Varieties : – what evolution dynamics can account for the empirical regularities?
- 2009
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Firm-level heterogeneity is substantial even in narrowly defined industries. This paper focuses on formulating evolution dynamics which can account for the observed heterogeneity and its maintenance. Based on examination of data on Swedish firm’ supply pattern to different markets over time, we present a parsimonious model that has the ambition to capture the picture of heterogeneous firms, while accommodating the simultaneous exit and entry of destination varieties in firms’ supply pattern. The model assumes both scale economies of firms and pathdependence, where the latter is manifested in such a way that the arrival rate of innovation ideas to an individual firm is a function of each firm’s stock of varieties at every given point in time. The path-dependence phenomenon is an “explosive” non-linearity, whereas conservation mechanisms include development of demand and exit of established varieties. The described path dependence explains the skewed distribution of varieties across firms, but the question of what keeps the “equilibrium” away from competitive exclusion where only few large firms remain. We make use of simulations to depict and assess the innovation dynamics of the proposed model.
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- Andersson, Martin, et al.
(författare)
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Heterogeneous Distributions of Firms Sustained by Innovation Dynamics-A Model with Empirical Illustrations and Analysis
- 2012
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Ingår i: Journal of Industry, Competition and Trade. - : Springer Science and Business Media LLC. - 1566-1679 .- 1573-7012. ; 12:2, s. 239-263
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Tidskriftsartikel (refereegranskat)abstract
- This paper develops a framework of innovation dynamics to appreciate observed heterogeneity of firm size distributions, in which dynamics refer to exit and entry of product varieties and variety markets of individual firms. The analysis is based on a model of variety-triplets where every such triplet in the economy is identified by a unique combination of a variety, destination and firm. New variety triplets are introduced by innovating firms in a quasi-temporal setting of monopolistic competition. Ideas for variety-triplets arrive to firms according to a firm-specific and state dependent Poisson process, whereas variety triplets exit according to a destination-specific Poisson process. The empirical analysis employs a detailed firm-level data base which provides information about all variety triplets. Firm size is measured by a firm's number of variety triplets. The empirical results are compatible with the model predictions of (i) a persistent distribution of firm sizes, (ii) frequent events of exit and entry, and (iii) state dependent entry, where a state may be given by each firm's composition of triplets and/or other firm attributes.
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- Andersson, Martin, et al.
(författare)
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Innovation Ideas and Regional Characteristics : product innovations and export entrepreneurship by firms in Swedish regions
- 2008
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Ingår i: Growth and Change. - : Wiley. - 0017-4815 .- 1468-2257. ; 39:2, s. 193-224
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Tidskriftsartikel (refereegranskat)abstract
- This paper focuses upon the ways in which characteristics of regions in regards to knowledge sources, communication opportunities, and absorptive capacity influence the development of innovation ideas among existing and potential entrepreneurs. We formulate a model where entrepreneurs or innovating firms introduce new products in a quasi-temporal setting. Market conditions are characterised by monopolistic competition between varieties belonging to the same product group, in which there is entry and exit of varieties. A stochastic process is assumed to generate new innovation ideas as time goes by, and a firm (entrepreneur) who receives such an idea has to transform the idea to an innovation, which in the model is specified as a particular variety combined with a specific destination market. The theoretical model is used as a reference when formulating two regression models, with which we estimate how a set of regional characteristics are associated with the likelihood of innovation ideas across Swedish local labour market regions. In one model, we examine the emergence of new export varieties, and in the second model, we investigate the appearance of new export firms. Results are consistent with the assumption that knowledge and information flows have a positive influence on the frequency of arrival of innovation ideas to firms.
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- Andersson, Martin, et al.
(författare)
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Multinationals in the Knowledge Economy : A case study of AstraZeneca in Sweden
- 2010
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Ingår i: Repositioning Europe and America for Growth. - Berlin : LIT Verlag. - 9783643107763
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Bokkapitel (refereegranskat)abstract
- This report presents a case study of the role of a large R&D intensive multinational company for a small open economy. The case study examines the role of AstraZeneca in the Swedish economy, i.e. an economy dominated by multinational companies. The purpose of the report is to analyze the interaction of AstraZeneca’s units in Sweden with the rest of the Swedish economy, and the Swedish innovation system in particular. We analyze the company’s role as an employer in the private sector, its transaction links with other Swedish firms and its role for Sweden’s exports. In a second perspective we focus on the company’s role in the Swedish knowledge economy and innovation system. The report analyses the company as a node for knowledge flows in the Swedish economy and innovation system, and its role as an employer of highly educated and skilled workers in Sweden.Our analysis of the Swedish units’ interaction with the rest of the Swedish economy shows that ’traditional’ couplings in the form of transactions with Swedish suppliers are limited. It is instead the company’s position in the ‘knowledge economy’ that makes its presence in Sweden important.
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