1. |
- Batten, David, et al.
(författare)
-
Modelling Commodity Flows on Trade Networks : Retrospect and Prospect
- 1989
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Various approaches to the estimation of commodity flow or trade share matrices across world trade networks are examined. Some serious drawbacks associated with the use of spatial price equilibrium models are identified, and a case is made for combining two or more individual approaches, such as may be found in "dispersed" spatial price equilibrium models or in computable general equilibrium models which cater for spatial heterogeneity. It is found that some variant of the gravity model may be a reliable guide to trade share patterns in the long run, particularly in a world of differentiated products and increasing returns to scale. A conclusive finding is that quite different models ought to be adopted for different commodities (i.e. markets) in the short and medium term perspective.
|
|
2. |
- Johansson, Börje, et al.
(författare)
-
Technical Change, Location and Trade
- 1987
-
Ingår i: Papers in regional science (Print). - Umeå : Umeå universitet. - 1056-8190 .- 1435-5957. ; 62:1, s. 13-35
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The difference between the slow adjustment of localized resources and the faster processes of technical change and product renewal cause a relocation pressure on existing production. Introduction of new products, techniques and establishments is stimulated by opportunities to attain temporary monopoly profits and is restrained by sunk costs in older vintages and competition for local resources. Introduction is more frequent in nodes with a rich and varied importstructure. The process can be modelledas a chain of import, production and export cycles with relocation. Conditions for introduction and change of location are analysed by means of a spatial vintage model.
|
|
3. |
- Westin, Lars, Professor, 1953-
(författare)
-
A short run inter-regional equilibrium vintage model
- 1988
-
Ingår i: Australian Journal of Regional Studies. - Toowoomba, Qld. : Australian and New Zealand Section of the Regional Science Association. - 1030-7923. ; 3:3, s. 3-11
-
Tidskriftsartikel (refereegranskat)
|
|
4. |
- Westin, Lars, Professor, 1953-, et al.
(författare)
-
En kortsiktig flersektoriell jämviktsmodell
- 1985
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- I det följande beskrivs en flersektoriell allmän jämviktsmodell för komparativ statisk analys av ekonomin under en kortsiktig tidshorisont.Modellen ansluter till den medelsiktiga modell som finns beskriven i Johansson & Persson (1983). Den är därmed baserad på en "årgångsansats", där industrisektorerna består av ett antal anläggningar med individuella effektivitets- och produktionskaraktäristika.Det primära användningsområdet för modellen är analyser av vilka effekter som störningar i den internationella handeln har på ekonomin.Genom att utnyttja kunskapen om anläggningarnas lokalisering, kan även de regionala effekterna studeras.Arbetet har utförts på uppdrag av FOA som även bidragit ekonomiskt till modellens utvecklande.
|
|
5. |
|
|
6. |
- Westin, Lars, Professor, 1953-
(författare)
-
Location, Transportation and Investments in a Multisector Vintage Model
- 1989
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- A model which captures the interaction between infrastructure, spatial economic growth, and structural change is presented. The model is an Applied Multisector Network Equilibrium (AMNE) model consisting of a Walras–Armington formulation of commodity flows and a multinominal logit formulation of modal split and link assignment. The supply side is of vintage type since the time horizon is medium term. The equilibrium model is motivated as an adiabatic approximation of a dynamic system in continuous time where the slaving principle has been applied to separate the involved processes.
|
|
7. |
|
|