Narrow search
Showing 1 - 10 of 73
Cover Image
Spillovers in networks of user generated content: Pseudo-experimental evidence on Wikipedia
Kummer, Michael - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2014
I quantify spillovers of attention in a network of content pages, which is challenging, because such networks form endogenously. I exploit exogenous variation in the article network of German Wikipedia to circumvent this problem. Wikipedia prominently advertises one featured article on its main...
Persistent link: https://www.econbiz.de/10011139789
Cover Image
Spillovers in networks of user generated content: Evidence from 23 natural experiments on Wikipedia
Kummer, Michael E. - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2013
Endogeneity in network formation hinders the identification of the role social networks play in generating spillovers, peer effects and other externalities. This paper tackles this problem and investigates how the link network between articles on the German Wikipedia influences the attention and...
Persistent link: https://www.econbiz.de/10010957727
Cover Image
The contribution of international R&D to firm profitability
Peters, Bettina; Schmiele, Anja - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2011
The internationalisation of corporate R&D opens up the chances to participate in international knowledge sharing. This … organizational costs as well as risks of outgoing knowledge spillovers. In this paper we empirically address the question whether …
Persistent link: https://www.econbiz.de/10008869230
Cover Image
Taxation, R&D tax incentives and patent application in Europe
Ernst, Christof; Spengel, Christoph - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2011
The focus of this paper is on effects from tax incentives for research and development inputs (R&D) and corporate income tax on business R&D and patenting behaviour. First, we provide a theoretical discussion of tax planning with R&D and intellectual property (IP) ownership. Further, we employ...
Persistent link: https://www.econbiz.de/10009003573
Cover Image
Industry-science connections in agriculture: Do public science collaborations and knowledge flows contribute to firm-level agricultural research productivity?
Toole, Andrew A.; King, John L. - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2011
scientific knowledge and private patented inventions. However, private inventions may be a function of the stock of public … knowledge. In this paper, we examine the possibility that public knowledge contributes to productivity through its relationship … with private sector invention. Our analysis identifies connections between the stock of public knowledge and private firm R …
Persistent link: https://www.econbiz.de/10009369494
Cover Image
The impact of public basic research on industrial innovation: Evidence from the pharmaceutical industry
Toole, Andrew A. - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2011
While most economists believe that public scientific research fuels industry innovation and economic growth, systematic evidence supporting this relationship is surprisingly limited. In a recent study, Acemoglu and Linn (2004) identified market size as a significant driver of drug innovation in...
Persistent link: https://www.econbiz.de/10009369495
Cover Image
Competing internationally: On the importance of R&D for export activity
Czarnitzki, Dirk; Wastyn, Annelies - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2010
Export is an important factor to improve growth and welfare especially for industrialized small, open economies such as Belgium. Policy may be interested in key variables that can influence export. This paper finds evidence for the importance of R&D for export activities using Belgian firm-level...
Persistent link: https://www.econbiz.de/10008694125
Cover Image
Intangible assets and firm-level productivity
Crass, Dirk; Peters, Bettina - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2014
Firms invest huge amounts into intangible assets. This paper explores to which extent different kinds of intangible assets are conducive to firm-level productivity. Our study contributes to the literature by simultaneously comparing productivity effects of innovative capital, human capital,...
Persistent link: https://www.econbiz.de/10011122562
Cover Image
Direct and cross-scheme effects in a research and development subsidy program
Hottenrott, Hanna; Lopes-Bento, Cindy; Veugelers, Reinhilde - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2014
This study investigates the effects of an R&D subsidy scheme on participating firms' net R&D investment. Making use of a specific policy design in Belgium that explicitly distinguishes between research and development grants, we estimate direct and cross-scheme effects on research versus...
Persistent link: https://www.econbiz.de/10011097461
Cover Image
China's R&D explosion: Analyzing productivity effects across ownership types and over time
Boeing, Philipp; Mueller, Elisabeth; Sandner, Philipp - Zentrum für Europäische Wirtschaftsforschung (ZEW) - 2015
In the past years Chinese firms increased their spending on R&D substantially and worked on achieving a higher quality level of R&D. We analyze whether different R&D activities show a positive influence on total factor productivity (TFP) for firms of different ownership types and across two time...
Persistent link: https://www.econbiz.de/10011139793