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126
Urban density and the rate of invention
- J. Urban Econom
, 2007
"... The authors thank Kristy Buzard for her excellent research assistance. We also thank Annette Fratantaro for her work on the Compustat variables and Jim Hirabayashi, of the U.S. Patent and Trademark Office, for his gracious response to our many questions. This paper has ..."
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Cited by 64 (6 self)
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The authors thank Kristy Buzard for her excellent research assistance. We also thank Annette Fratantaro for her work on the Compustat variables and Jim Hirabayashi, of the U.S. Patent and Trademark Office, for his gracious response to our many questions. This paper has
Exploring the knowledge filter: How entrepreneurship and universityindustry relationships drive economic growth, Research Policy 35
, 2006
"... Knowledge is recognized as a crucial element of economic growth in addition to physical capital and labor. Knowledge can be transformed into products and processes and is herewith exploited commercially. The ability to produce, identify, and exploit knowledge depends on the existing knowledge stock ..."
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Cited by 21 (0 self)
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Knowledge is recognized as a crucial element of economic growth in addition to physical capital and labor. Knowledge can be transformed into products and processes and is herewith exploited commercially. The ability to produce, identify, and exploit knowledge depends on the existing knowledge stock and the absorptive capacity of actors like employees at firms and researchers at universities and research institutions. The existing knowledge stock might not be commercialized to its full extent, therefore, knowledge flows must occur and transmission channels are needed. The paper tests the hypotheses that entrepreneurship and university-industry relations are vehicles for knowledge flows and thus spur economic growth. JEL classification: M13, O18, O31
R&D, spillovers, innovation systems and the genesis of regional growth
- in Europe” Regional Studies
, 2008
"... tempestivamente, in forma definitiva o provvisoria, i risultati di ricerche scientifiche originali. La loro pubblicazione è soggetta all’approvazione del Comitato Scientifico.- Per ciascuna pubblicazione vengono soddisfatti gli obblighi previsti dall’art. 1 del D.L.L. 31.8.1945, n. 660 e successive ..."
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Cited by 16 (12 self)
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tempestivamente, in forma definitiva o provvisoria, i risultati di ricerche scientifiche originali. La loro pubblicazione è soggetta all’approvazione del Comitato Scientifico.- Per ciascuna pubblicazione vengono soddisfatti gli obblighi previsti dall’art. 1 del D.L.L. 31.8.1945, n. 660 e successive modifiche.- Copie della presente pubblicazione possono essere richieste alla Redazione.
Complementary Assets, Start-Ups and Incentives to Innovate, aprile
, 2008
"... Complementary Assets, Start-Ups and Incentives to Innovate Luca Colombo Herbert Dawid ..."
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Cited by 11 (4 self)
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Complementary Assets, Start-Ups and Incentives to Innovate Luca Colombo Herbert Dawid
Wage Premia in Employment Clusters: Agglomeration or Worker Heterogeneity?” mimeo
, 2010
"... This paper tests whether the correlation between wages and the spatial concentration of employment can be explained by unobserved worker productivity differences. Residential location is used as a proxy for a worker’s unobserved productivity, and average workplace commute times are used to test whet ..."
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Cited by 11 (1 self)
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This paper tests whether the correlation between wages and the spatial concentration of employment can be explained by unobserved worker productivity differences. Residential location is used as a proxy for a worker’s unobserved productivity, and average workplace commute times are used to test whether location based productivity differences are compensated away by longer commutes. Analyses using the 2000 Census find that the agglomeration estimates are robust to comparisons within residential location and that the estimates do not persist after controlling for commutes suggesting that the productivity differences across locations are due to agglomeration rather than productivity differences across individuals. 2
Borders and Distance in Knowledge Spillovers: Dying over Time or Dying with Age? – Evidence from Patent Citations
, 2009
"... This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we construct a data set to examine patent citations data at the metropolitan level within the U.S. as well as ..."
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Cited by 9 (1 self)
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This paper uses a gravity framework to investigate the effects of distance as well as subnational and national borders in knowledge spillovers. Drawing on the NBER Patent Citations Database, we construct a data set to examine patent citations data at the metropolitan level within the U.S. as well as the 38 largest patent-cited countries outside the U.S. Three key findings are documented. First, we find strong subnational localization effects at the Metropolitan Statistical Area and state levels: more than 90 % of intranational border effects stem from the metropolitan level rather than state. This is consistent with the artifact of geographic aggregation at the state level for trade flows as in Hillberry and Hummels (2008). Second, border and distance effects decrease with the age of cited patent, which implies that new knowledge faces the largest barriers to diffusion. However, over time, the measured effects of border and distance increased due to two potential reasons: the increased proportion of new knowledge flows and the increased proportion of self-citations over time. Finally, we find that (assignee) self-citations and aggregation bias are two sources of overestimated aggregate border effects of knowledge spillovers. While self-citations are only 11 % of total citations, they account for approximately 50 % of MSA and national border effects. Decomposing the data along geographic, age or industrial dimensions contributes to the reduction of border effects.
Do Clusters Really Matter for Innovation Practices in Information Technology? Questioning the Significance of Technological Knowledge Spillovers
- Journal of Economic Geography
, 2012
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Skills, innovation, and growth: An agent-based policy analysis
"... We develop an agent-based macroeconomic model featuring a distinct geographical dimension and heterogeneous workers with respect to skill types. The model, which will become part of a larger simulation platform for European policymaking (EURACE), allows us to conduct ex-ante evaluations of a wide ra ..."
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Cited by 7 (1 self)
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We develop an agent-based macroeconomic model featuring a distinct geographical dimension and heterogeneous workers with respect to skill types. The model, which will become part of a larger simulation platform for European policymaking (EURACE), allows us to conduct ex-ante evaluations of a wide range of public policy measures and their interaction. In particular, we study the growth and labor market effects of various policy types that promote workers ’ general skill levels. Using a calibrated model it is examined in how far effects differ if spending is uniformly spread over all regions in the economy or focused in one particular region. We find that the geographic distribution of policy measures significantly affects the effects of the policy even if total spending is kept constant. Focussing training efforts in one region is the worst policy outcome while spreading funds equally across regions generates a larger output in the long-run but not in the short-run. 1
