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Sökning: swepub > Umeå universitet > Engelska > Övrigt vetenskapligt/konstnärligt > Puu Tönu 1936

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11.
  • Puu, Tönu, 1936-, et al. (författare)
  • A Hicksian Multiplier-Accelerator Model with Floor Determined by Capital Stock and Tongues of Periodicity in a Family of Two-dimensional Discontinuous Maps of Real Möbius Type
  • 2003
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • A Hicksian Multiplier-Accelerator Model This article reconsiders the Hicksian multiplier-accelerator model with the "floor" related to the depreciation on actual capital stock. Through the introduction of the capital variable a growth trend is created endogenously by the model itself, along with growth rate oscillations around it. The "ceiling" can be dispensed with altogether. As everything is growing in such a model, a variable transformation is introduced to the end of focusing relative dynamics of the income growth rate and the actual capital output ratio. Tongues of Periodicity in a Family of Two-dimensional Discontinuous Maps of Real Möbius Type In this paper we consider a two-dimensional piecewise-smooth discontinuous map representing the so-called "relative dynmics" of an Hicksian business cycle model. The main features of the dynamics occur in the parameter region in which no fixed points at finite distance exist, but we may have attracting cycles of any periods. The bifurcations associated with the periodicity tongues of the map are studied making use of the first return map on a suitable segment of the phase plane. The bifurcation curves bounding the periodicity tongues in the parameter plane are related with saddle-node and border-collision bifurcations of the first-return map. Moreover, the particular "sausages structure" of the bifurcation tongues is also explained.
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13.
  • Puu, Tönu, 1936- (författare)
  • Arts, Sciences, and Economics : A Historical Safari
  • 2006
  • Bok (övrigt vetenskapligt/konstnärligt)abstract
    • This book deals with the economic aspects of changing attitudes in arts and sciences. The effects of the public good character of culture, along with the very long production period and lifetime for its products, are emphasized, since both contribute to the failure of normal market solutions. Embodiment of ideas, and the consequences of modern reproduction technology for protection of property rights are closely examined. The evolution within arts and sciences, which often seems to return to previously scrapped ideals, is illustrated by detailed case studies, in which the importance of changing tastes, rather than progress proper, is emphasized. The author attempts an understanding for this using Darwinian evolution in combination with modern mathematical complexity theory, expressed in terms accessible to the general reader.
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16.
  • Puu, Tönu, 1936- (författare)
  • Chaos in duopoly pricing
  • 2004
  • Ingår i: Complexity in Economics. - : Edward Elgar Publishing. - 9781840649895
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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18.
  • Puu, Tönu, 1936- (författare)
  • Complex oligopoly dynamics
  • 2005
  • Ingår i: Nonlinear Dynamical Systems in Economics. - : Springer. - 9783211261774
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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19.
  • Puu, Tönu, 1936-, et al. (författare)
  • Cournot Duopoly when the Competitors Operate under Capacity Constraints
  • 2002
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • The paper considers Cournot duopoly where the competitors have capacity constraints. An isoelastic demand function, which always results when consumers maximise utility functions of the CobbDouglas type, is used. It has been demonstrated that isoelastic demand, combined with constant marginal costs, results in complex dynamics. The purpose of the present paper is to reconsider the case, using in stead cost functions with capacity limits. This is a point on which Edgeworth insisted as important. Comparisons between cases of few large and many small competitors cannot be made when firms have constant returns and hence are all infinitely large in potential.
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