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131.
It has been evident for some time that the proportion of the public development aid which is distributed through multilateral channels is increasing. The causes of this process are examined in the following article which is based on the author's doctor thesis.  相似文献   
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This paper uses an unbalanced panel data set for exporting firms from manufacturing industries in one German federal state, Lower Saxony, to investigate the microstructure of the recent export boom. Looking at data for 1995/96–2001/02 it is demonstrated that a considerable number of plants start and stop exporting in each year, but that most of the export dynamics is due to positive and negative changes of exports in plants that continue exporting. A small fraction made of 4–5 percent of all exporting plants is responsible for around 70 to 80 percent of the gross increase in exports. Firms with expanding and contracting exports are found simultaneously in all broad sectors, technology classes and firm size classes. Patterns of export behavior differ widely between the plants over the periods investigated. JEL no. F14, E32  相似文献   
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Modularity is a means of partitioning technical knowledge about a product or process. When state‐sanctioned intellectual property (IP) rights are ineffective or costly to enforce, modularity can be used to hide information and thus protect IP. We investigate the impact of modularity on IP protection by formally modeling the threat of expropriation by agents. The principal has three options to address this threat: trust, licensing, and paying agents to stay loyal. We show how the principal can influence the value of these options by modularizing the system and by hiring clans of agents, thus exploiting relationships among them. Extensions address screening and signaling in hiring, the effects of an imperfect legal system, and social norms of fairness. We illustrate our arguments with examples from practice.© 2014 The Authors. Strategic Management Journal published by John Wiley & Sons Ltd.  相似文献   
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A vast literature on the international activities of heterogeneous firms finds the existence of a positive exporter productivity premium. On average, exporting firms are more productive than firms that sell on the national market only. The Melitz (Econometrica 71:1695–1725, 2003) model, however, has implications for not only mean differences but also differences in the distribution of productivity. Furthermore, exporting firms may be different from non-exporting firms for reasons that are not included in the Melitz model. We believe that conditioning on firm fixed effects and studying the distribution of productivity are both necessary for empirical tests of the Melitz model. This paper is the first to employ a new quantile estimation technique for panel data introduced in Powell (Did the economic stimulus payments of 2008 reduce labor supply? Evidence from quantile panel data estimation. RAND Corporation Publications Department, Santa Monica, 2014). We find that the premium is positive at all productivity levels, but highest at the lowest quantiles. These results support theoretical models which suggest that there is a division in productivity between exporters and non-exporters.  相似文献   
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