Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Spatial Spillovers of Knowledge Production: An Accessibility Approach
Högskolan Väst, Institutionen för ekonomi och it, Avd för juridik, politik och ekonomi. Högskolan Väst, Institutionen för ekonomi och it, Avd för juridik, ekonomi, statistik och politik.ORCID-id: 0000-0002-8189-7205
2006 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

The main focus of the thesis is on issues concerning production of knowledge. It is a common observation that knowledge activities have a tendency to agglomerate as well as to spill over in space. In order to incorporate geographical proximity, the thesis applies an accessibility approach in which actual travel time distances between locations are used to discount spatial knowledge spillovers. The thesis consists of three individual essays and a joint introduction. The first essay explores to what extent accessibility to R&D conducted at universities and companies can explain the number of patent applications in Swedish municipalities. The second essay analyses the relationship between knowledge accessibility and regional export performance. The knowledge resources used are R&D efforts and university educated labour. Since the distributions of the dependent variables are skewed with a few influential outliers, the estimations are conducted with quantile regressions. The empirical findings indicate that accessibility to university R&D has minor effects on patent production and export performance in Sweden. However, the other used inputs, i.e. accessibility to company R&D and accessibility to university educated labour, are of greater importance. The results also show that knowledge flows transcend municipal borders but that they tend to be bounded within functional regions. The third essay investigates how the inclusion of accessibility variables, i.e. spatially lagged explanatory variables, affects the extent of spatial autocorrelation. The basic proposition is that the inclusion of inputs external to the spatial observation as separate variables reveals spatial dependencies via the parameter estimates. This is confirmed by Monte Carlo simulations. The Monte Carlo Simulations also indicate that problems with spatial autocorrelation and biased parameter estimates are reduced.

Ort, förlag, år, upplaga, sidor
Jönköping: Internationella Handelshögskolan , 2006. , s. 153
Serie
JIBS dissertation series, ISSN 1403-0470 ; 34
Nyckelord [sv]
nationalekonomi
Nationell ämneskategori
Nationalekonomi
Forskningsämne
SAMHÄLLSVETENSKAP, Nationalekonomi
Identifikatorer
URN: urn:nbn:se:hv:diva-2040ISBN: 91-89164-68-7 (tryckt)OAI: oai:DiVA.org:hv-2040DiVA, id: diva2:280481
Disputation
2006-09-13, Sal B1014, Internationella Handelshögskolan, Jönköping, 10:00 (Engelska)
Tillgänglig från: 2010-03-03 Skapad: 2009-12-10 Senast uppdaterad: 2019-11-14Bibliografiskt granskad
Delarbeten
1. Accessibility to R&D and Patent Production
Öppna denna publikation i ny flik eller fönster >>Accessibility to R&D and Patent Production
2005 (Engelska)Rapport (Övrigt vetenskapligt)
Abstract [en]

The main purpose in this paper is to study to what extent accessibility to R&D can explain patent production. Therefore a knowledge production function is estimated both on aggregated level and for different industrial sectors. The output of the knowledge production is the number patent applications in Swedish municipalities from 1994 to 1999. In order to account for the importance of proximity, the explanatory variables are expressed as accessibilities to university and company R&D. The total accessibility is then decomposed into local, intra-regional and inter-regional accessibility to R&D. As often is the case with R&D outputs, the regional distribution of patents is highly skewed with influential outliers. The estimations are therefore conducted with quantile regressions. The main results on aggregated level indicate that high accessibility (local) to company R&D has the greatest positive effects on patent production. The effects are statistically significant for municipalities with a patent production corresponding to the median and to quantiles above the median. Local accessibility to university R&D is only of importance for certain industrial sectors and not on aggregated level. There is also evidence that intra-regional accessibility to company R&D affects patent production positively. A conclusion is that concentrated R&D investments in companies situated in municipalities with a high patenting activity would not only gain the municipalities themselves, but also the patent production in other municipalities in the functional region.

Ort, förlag, år, upplaga, sidor
Stockholm: The Royal Institute of technology, 2005. s. 35
Serie
Electronic Working Paper Series ; 37
Nyckelord
innovations, patents, R&D, knowledge production functions
Nationell ämneskategori
Annan maskinteknik
Forskningsämne
SAMHÄLLSVETENSKAP, Nationalekonomi
Identifikatorer
urn:nbn:se:hv:diva-2073 (URN)
Tillgänglig från: 2009-12-18 Skapad: 2009-12-18 Senast uppdaterad: 2011-01-05Bibliografiskt granskad
2. University-educated labor, R&D and regional export performance
Öppna denna publikation i ny flik eller fönster >>University-educated labor, R&D and regional export performance
2008 (Engelska)Ingår i: International regional science review, ISSN 0160-0176, E-ISSN 1552-6925, Vol. 31, nr 3, s. 211-256Artikel i tidskrift (Refereegranskat) Published
Ort, förlag, år, upplaga, sidor
SAGE, 2008
Nyckelord
Exports, Knowledge production, Quantile regression, Research and development (R&D)
Nationell ämneskategori
Nationalekonomi
Forskningsämne
Samhällsvetenskap, Nationalekonomi
Identifikatorer
urn:nbn:se:hv:diva-1529 (URN)10.1177/0160017608319335 (DOI)
Tillgänglig från: 2009-05-13 Skapad: 2009-05-13 Senast uppdaterad: 2017-12-13Bibliografiskt granskad
3. On the Specification of Regression Models with Spatial Dependence: An Application of the Accessibility concept
Öppna denna publikation i ny flik eller fönster >>On the Specification of Regression Models with Spatial Dependence: An Application of the Accessibility concept
2005 (Engelska)Rapport (Övrigt vetenskapligt)
Abstract [en]

Using the taxonomy by Anselin (2003), this paper investigates how the inclusion of spatially discounted variables on the ‘right-hand-side’ (RHS) in empirical spatial models affects the extent of spatial autocorrelation. The basic proposition is that the inclusion of inputs external to the spatial observation in question as a separate variable reveals spatial dependence via the parameter estimate. One of the advantages of this method is that it allows for a direct interpretation. The paper also tests to what extent significance of the estimated parameters of the spatially discounted explanatory variables can be interpreted as evidence of spatial dependence. Additionally, the paper advocates the use of the accessibility concept for spatial weights. Accessibility is related to spatial interaction theory and can be motivated theoretically by adhering to the preference structure in random choice theory. Monte Carlo Simulations show that the coefficient estimates of the accessibility variables are significantly different from zero in the case of modelled effects. The rejection frequency of the three typical tests (Moran’s I, LM-lag and LM-err) is significantly reduced when these additional variables are included in the model. When the coefficient estimates of the accessibility variables are statistically significant, it suggests that problems of spatial autocorrelation are significantly reduced. Significance of the accessibility variables can be interpreted as spatial dependence

Ort, förlag, år, upplaga, sidor
Stockholm: Royal Institute of Technology, 2005. s. 27
Serie
Electronic Working Paper Series ; 51
Nyckelord
accessibility, spatial dependence, spatial econometrics, Monte Carlo Simulations, spatial
Nationell ämneskategori
Nationalekonomi
Forskningsämne
SAMHÄLLSVETENSKAP, Nationalekonomi
Identifikatorer
urn:nbn:se:hv:diva-2074 (URN)
Tillgänglig från: 2009-12-18 Skapad: 2009-12-18 Senast uppdaterad: 2010-03-22Bibliografiskt granskad

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

fulltext

Personposter BETA

Gråsjö, Urban

Sök vidare i DiVA

Av författaren/redaktören
Gråsjö, Urban
Av organisationen
Avd för juridik, politik och ekonomiAvd för juridik, ekonomi, statistik och politik
Nationalekonomi

Sök vidare utanför DiVA

GoogleGoogle Scholar

isbn
urn-nbn

Altmetricpoäng

isbn
urn-nbn
Totalt: 188 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf