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The Relationship between Technology, Innovation, and Firm Performance: Empirical Evidence on E-Business in Europe

Koellinger, Philipp - Erasmus Research Institute of Management (ERIM), … - 2008

This article analyzes the relationship between the usage of Internet-based technologies, different types of innovation … enterprises. The empirical results show that Internet-based technologies were an important enabler of innovation in the year 2003 …. It was found that all studied types of innovation, including Internet-enabled and non-Internet-enabled product or process …

Persistent link: https://www.econbiz.de/10010730893

Why Are Some Entrepreneurs More Innovative Than Others?

Koellinger, Philipp - Erasmus Research Institute of Management (ERIM), … - 2007

The study provides theoretical insights and empirical evidence on the emergence of different types and degrees of entrepreneurial innovativeness. The results suggest that entrepreneurial innovativeness depends both on individual factors and on the environment in which the individual lives. In...

Persistent link: https://www.econbiz.de/10010731443

Attractive Supervisors: How Does the Gender of the Supervisor Influence the Performance of the Supervisees?

Koellinger, Philipp; Block, Joern H. - Erasmus Research Institute of Management (ERIM), … - 2012

A series of field and laboratory experiments were conducted in which single-sex groups of male or female students competed in different intellectual tasks to earn money or university grades (N = 291). The supervisor of these groups was one of several young and attractive males or females. The...

Persistent link: https://www.econbiz.de/10010730988

VOS: A New Method for Visualizing Similarities between Objects

van Eck, van Eck, N.J.P.; Waltman, Waltman, L. - Erasmus Research Institute of Management (ERIM), … - 2006

We present a new method for visualizing similarities between objects. The method is called VOS, which is an abbreviation for visualization of similarities. The aim of VOS is to provide a low-dimensional visualization in which objects are located in such a way that the distance between any pair...

Persistent link: https://www.econbiz.de/10010730862

Some Comments on the Question Whether Co-Occurrence Data Should Be Normalized

Waltman, Waltman, L.; van Eck, van Eck, N.J.P. - Erasmus Research Institute of Management (ERIM), … - 2008

In a recent article in JASIST, L. Leydesdorff and L. Vaughan (2006) asserted that raw cocitation data should be analyzed directly, without first applying a normalization such as the Pearson correlation. In this communication, it is argued that there is nothing wrong with the widely adopted...

Persistent link: https://www.econbiz.de/10010730955

Generalizing the h- and g-indices

van Eck, van Eck, N.J.P.; Waltman, Waltman, L. - Erasmus Research Institute of Management (ERIM), … - 2008

We introduce two new measures of the performance of a scientist. One measure, referred to as the hα-index, generalizes the well-known h-index or Hirsch index. The other measure, referred to as the gα-index, generalizes the closely related g-index. We analyze theoretically the relationship...

Persistent link: https://www.econbiz.de/10010731216

Bibliometric Mapping of the Computational Intelligence Field

van Eck, van Eck, N.J.P.; Waltman, Waltman, L. - Erasmus Research Institute of Management (ERIM), … - 2008

In this paper, a bibliometric study of the computational intelligence field is presented. Bibliometric maps showing the associations between the main concepts in the field are provided for the periods 1996–2000 and 2001–2005. Both the current structure of the field and the evolution of the...

Persistent link: https://www.econbiz.de/10010731283

How to Normalize Co-Occurrence Data? An Analysis of Some Well-Known Similarity Measures

van Eck, van Eck, N.J.P.; Waltman, Waltman, L. - Erasmus Research Institute of Management (ERIM), … - 2009

In scientometric research, the use of co-occurrence data is very common. In many cases, a similarity measure is employed to normalize the data. However, there is no consensus among researchers on which similarity measure is most appropriate for normalization purposes. In this paper, we...

Persistent link: https://www.econbiz.de/10010731291

Some Comments on Egghe’s Derivation of the Impact Factor Distribution

Waltman, Waltman, L.; van Eck, van Eck, N.J.P. - Erasmus Research Institute of Management (ERIM), … - 2009

In a recent paper, Egghe [Egghe, L. (in press). Mathematical derivation of the impact factor distribution. Journal of Informetrics] provides a mathematical analysis of the rank-order distribution of journal impact factors. We point out that Egghe’s analysis relies on an unrealistic assumption,...

Persistent link: https://www.econbiz.de/10010731304

Economic Modeling Using Evolutionary Algorithms: The Effect of a Binary Encoding of Strategies

Dekker, Rommert; Kaymak, Uzay; Waltman, Waltman, L.; … - Erasmus Research Institute of Management (ERIM), … - 2009

We are concerned with evolutionary algorithms that are employed for economic modeling purposes. We focus in particular on evolutionary algorithms that use a binary encoding of strategies. These algorithms, commonly referred to as genetic algorithms, are popular in agent-based computational...

Persistent link: https://www.econbiz.de/10010731317