Showing 1 - 10 of 92
We analyze the impact of obsolescence of economic inventions by incorporating maintenance costs in the endogenous growth model of expanding product varieties. This contrasts with the existing literature, which ignores maintenance costs and uses the model of quality improvements to describe...
Persistent link: https://www.econbiz.de/10005137353
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/10005795584
data on 170 regions in Europe (NUTS 2 level) for the periods 1991-1995 and 2001-2005. Innovation outcomes are measured by … diffusion of innovation activity, and the spatial selectivity of immigrants' location choices, we take account of spatial …'s restaurants as a novel instrument for immigration. The results confirm that innovation is clearly a function of regio nal …
Persistent link: https://www.econbiz.de/10009201123
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/10009201126
effectiveness and efficiency of national and European innovation policies. Building on the literature on the knowledge production …
Persistent link: https://www.econbiz.de/10008838638
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/10005137071
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/10005450786
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/10005137162
The paper considers a two-country model of overlapping generations heterogenous
Persistent link: https://www.econbiz.de/10005137211
The paper studies the determinants of income distribution and growth in an overlapping generations economy with heterogenous households. Our framework has the following main features: <OL> <LI>heterogeneity of consumers with respect to wealth and parental human capital; <LI>intergenerational transfers,...</li></li></ol>
Persistent link: https://www.econbiz.de/10005137322