This article investigates the behaviour of the European banking system during the financial crises that occurred in the last decades. Among the various approaches for measuring systemic risk, we consider network analysis, which describes the linkages among financial institutions and their whole structure. We construct a time-varying network of the European banking system. Banks are linked to form a global interconnected system and they mutually influence one another in terms of risk. We model their reciprocal influence via a weighted and directed network, in which weights are related to risk measures that are based on equity returns. Then, we apply two network indicators to investigate the prominence of a bank in spreading and receiving risk from the others. The results enable us to capture many features of the banking system while identifying the global systemically important banks. Moreover, the results of the analysis over time show how interconnections change over periods that are characterized by various economic scenarios.
In this work, we analyze the relationship between the patterns of firm diversification, if any, across product lines and across bodies of innovative knowledge, proxied by the patent classes where the firm is present. Putting it more emphatically, we investigate the relationship between “what a firm does” and “what a firm knows.” Using a newly developed dataset matching information on patents and products at the firm level, we provide evidence concerning firms’ technological and product scope, their relationships, the size-scaling and coherence properties of diversification itself. Our analysis shows that typically firms are much more diversified in terms of products than in terms of technologies, with their main products more related to the exploitation of their innovative knowledge. The scaling properties show that the number of products and technologies increases log-linearly with firm size. And the directions of diversification themselves display coherence between neighboring activities also at relatively high degrees of diversification. These findings are well in tune with a capability-based theory of the firm. 相似文献
This paper investigates the influence of family tradition and psychological traits on the entrepreneurial intention of university hospitality students in the UK. The empirical study was predicated on the need to consider both socio-demographic variables and especially family background and personality traits. The research also tested the suggestion that risk taking propensity may act as a potential mediator. The findings of the study suggest that family entrepreneurial background and innovation influence the intention to start a new business; that there is positive relationship between tolerance of ambiguity and risk taking propensity; and a negative relationship between locus of control and risk taking propensity. The paper emphasizes the importance of taking a more holistic approach when researching the factors that influence entrepreneurial intention. 相似文献
Insomma, non si può osservare una onda senza tenere conto degli aspetti complessi che concorrono a formarla e di quelli altrettanto complessi cui essa dà luogo (I. Calvino, Palomar). 相似文献
This paper studies the short and medium run impact of highly skilled immigrants from the Former Soviet Union to Israel on natives' wages and employment. If immigrants are relatively good substitutes for native workers, the impact of immigration will be largest immediately upon the immigrants' arrival, and may become smaller as the labor market adjusts to the supply shock. Conversely, if immigrants upon arrival are poor substitutes for natives, the initial effect of immigration is small, and increases over time as immigrants acquire local labor market skills and compete with native workers. We empirically examine these alternative hypotheses using data from Israel between 1989 and 1999.We find that wages of both men and women are negatively correlated with the fraction of immigrants with little local experience in a labor market segment. A 10 percent increase in the share of immigrants lowers natives' wages in the short run by 1–3 percent, but this effect dissolves after 4–7 years. This result is robust to a variety of different segmentations of the labor market, to the inclusion of cohort effects, and to different dynamic structures in the residual term of the wage equation. On the other hand, we do not find any effect of immigration on employment, neither in the short nor in the medium run. 相似文献
The process of innovation follows nonlinear patterns across the domains of science, technology, and the economy. Novel bibliometric mapping techniques can be used to investigate and represent distinctive, but complementary perspectives on the innovation process (e.g. ‘demand’ and ‘supply’) as well as the interactions among these perspectives using animations. In a map, the different perspectives can be represented as ‘continents’ of data related to varying extents over time. For example, the different branches of Medical Subject Headings (MeSH) in the Medline database provide sources of such perspectives (e.g. ‘Diseases’ vs ‘Drugs and Chemicals’). The multiple-perspective approach enables us to reconstruct facets of the dynamics of innovation, in terms of selection mechanisms shaping localisable trajectories and/or resulting in more globalised regimes. By expanding the data with patents and scholarly publications, we demonstrate the use of this multi-perspective approach in the case of RNA Interference (RNAi). The possibility to develop an ‘Innovation Opportunities Explorer’ is specified. 相似文献
Abstract This article proposes a model of international strategy of retail companies. It has been developed and tested by studying the international activities, both successful and unsuccessful, of 37 international companies for more than a decade. It defines the most important components of a successful strategy and, for each component, it evaluates the importance of this variable in connection with the others. The model proposed is able not only to explain the internationalization process of many important companies during the 1990s and at the beginning of the 2000s, but also puts forward to the managerial sector the strategic variables for both the companies that have already started an internationalization process and those that wish to begin it. 相似文献