Showing 1 - 10 of 52
We analyze the impact of obsolescence of economic inventions by incorporating maintenance costsin the endogenous growth model of expanding product varieties. This contrasts with the existingliterature, which ignores maintenance costs and uses the model of quality improvements todescribe...
Persistent link: https://www.econbiz.de/10011256370
This study analyses 1400 research projects of the top 20 R&D-spending pharmaceuticals to identify the determinants of successful research projects. We provide clear evidence that externally sourced projects and projects involving biotechnologies perform better than internal projects and chemical...
Persistent link: https://www.econbiz.de/10011256608
Which signals are important in gaining attention in science? For a group of 1,371 scientific articles published in 17 demography journals in the years 1990-1992 we track their influence and discern which signals are important in receiving citations. Three types of signals are examined: the...
Persistent link: https://www.econbiz.de/10011257178
Innovation and technological change are central to the quest for regional development. In the globally … structure characterised by its extent of specialisation, competition and diversity, to yield innovation and productivity growth … (diversity) and Porter externalities (competition) that have provided alternative explanations for innovation and urban growth …
Persistent link: https://www.econbiz.de/10011255948
-2005. Innovation outcomes are measured by means of the number of patent applications per million inhabitants. Given the geographical … concentration and subsequent diffusion of innovation activity, and the spatial selectivity of immigrants' location choices, we take … of McDonald's restaurants as a novel instrument for immigration. The results confirm that innovation is clearly a …
Persistent link: https://www.econbiz.de/10011256057
In recent decades there have been an enormous number of studies about innovation systems, partly inspired by a great … development strategies. Despite different perspectives, most studies highlight knowledge creation and innovation as the major … drivers of change and growth. This consensus disappears, however, as soon as the complexity of innovation and knowledge are …
Persistent link: https://www.econbiz.de/10011256132
Portuguese strategic choices regarding innovation and R&D policy have, over the past two decades, produced various … firms' contribution to national and regional growth, their obstacles and impacts. For the purpose of this paper, innovation … the present performance of Portuguese firms located throughout the country and to explore those innovation determinants …
Persistent link: https://www.econbiz.de/10011256222
This discussion paper resulted in a publication in the <I>Journal of Economic Dynamics and Control</I> (2013), 37(12), 2729-2754.<P> Existing models of R&D are not easily reconciled with four observable aspects of R&D: initial technologies ('ideas') need to be developed further, only a minority of initial...</p></i>
Persistent link: https://www.econbiz.de/10011256239
The importance of knowledge spillovers for achieving innovation and economic growth is widely recognized. It is not … this controversy using a model of regional growth. The model also deals with the impact of local competition on innovation …
Persistent link: https://www.econbiz.de/10011256365
effectiveness and efficiency of national and European innovation policies. Building on the literature on the knowledge production …
Persistent link: https://www.econbiz.de/10011256577