| 51. |
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| 52. |
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| 53. |
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| 54. |
- Pettersson, Örjan, et al.
(författare)
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Vägar för samverkan : Storumanföretagares inställning till planeringssamarbete över kommungränsen
- 2003
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Rapporten belyser hur företagare i inlandskommunen Storuman ser på samarbetssträvanden över kommungränser längs väg E12, vilken bildar ett dominerande transportstråk i Västerbottens län som sammanbinder kustens största stad Umeå med den västerbottniska fjällvärldens mest utvecklade turistmiljö Tärnaby/Hemavan. E12:an som även benämns den Blå vägen fortsätter både i Norge mot Mo i Rana och i Finland närmast mot Vasa. Detta kommunövergripande samarbetssammanhang som kan bygga på många olikheter ställs mot den traditionella samarbetsriktningen i inlandet, d v s med de närliggande kommunerna som har många likheter i sin struktur och problembilder.
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| 55. |
- Puu, Tönu, 1936-, et al.
(författare)
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A Business Cycle Model with Cubic Nonlinearity
- 2002
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This paper deals with a simple multiplier-accelerator model of the business cycle, including a cubic nonlinearity. The corresponding two dimensional iterative map is represented in terms of its bifurcation diagram in parameter space. A number of bifurcation sequences for attractors and their basins are studied.
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| 56. |
- Puu, Tönu, 1936-, et al.
(författare)
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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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| 57. |
- Puu, Tönu, 1936-, et al.
(författare)
-
Cournot Duopoly when the Competitors Operate under Capacity Constraints
- 2002
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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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| 58. |
- Puu, Tönu, 1936-
(författare)
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On the Genesis of Hexagonal Shapes
- 2004
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Hexagonal shapes for market areas have been dominant in spatial economics ever since Christaller observed them and Lösch explained their emergence in terms of optimality. It is observed in the following that, though hexagons are best, the differences to for instance squares in terms of efficiency are negligibly small. As the existence of hexagonal shapes - in the space economy, as well as in beehives or other patterns of the physical world cannot be denied - a different cause for their emergence is proposed. Such an explanation is structural stability, which allows three market areas, but not four or six, to come together in each common vertex. The focus is hence the way market areas are organized in space, rather than their shape.
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| 59. |
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| 60. |
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