In many datasets, articles are classified into sub-fields through the journals in which they have been published. The problem is that many journals are assigned to a single sub-field, but many others are assigned to several sub-fields. This paper discusses a multiplicative and a fractional...

This paper evaluates the European Paradox according to which Europe plays a leading world role in terms of scientific excellence, measured in terms of the number of publications, but lacks the entrepreneurial capacity of the U.S. to transform this excellent performance into innovation, growth,...

This paper has two main aims: (i) to criticize the diagnosis about the research performance of the EU contained in the so-called “European Paradox”, according to which Europe plays a leading world role in terms of scientific excellence, but lacks the entrepreneurial capacity of the U.S. to...

This paper studies evidence from Thomson Scientific about the citation process of 3.7 million articles published in the period 1998-2002 in 219 Web of Science categories, or sub-fields. Reference and citation distributions have very different characteristics across sub-fields. However, when...

This paper investigates the citation impact of three large geographical areas -- the U.S., the European Union (EU), and the rest of the world (RW) -- at different aggregation levels. The difficulty is that 42% of the 3.6 million articles in our Thomson Scientific dataset are assigned to several...

This paper uses high- and low-impact citation indicators for the evaluation of the citation performance of research units at different aggregate levels. To solve the problem of the assignment of individual articles to multiple sub-fields, it follows a multiplicative strategy according to which...

This paper reviews a number of recent contributions that demonstrate that a blend of welfare economics and statistical analysis is useful in the evaluation of the citations received by scientific papers in the periodical literature. The paper begins by clarifying the role of citation analysis in...

Hilft eine höhere Geburtenrate, die Folgen der Alterung zu dämpfen? Die Ergebnisse der Wirtschaftstheorie sind keinesfalls eindeutig, auch wenn die Idee – „Wenn wir zu viele Alte haben, brauchen wir mehr Kinder, um dies wieder auszugleichen“ – plausibel erscheint. Auch die...

Population aging is just beginning to hit the industrialized countries in full force, and it will have a tremendous impact on capital markets. Capital market effects of population aging are particularly strong in continental European economies such as Germany, with their large pay-as-you- go...

This paper shows that the capital market effects of population aging and pension reform are particularly strong in continental European economies such as France, Germany, and Italy. Reasons are threefold: these countries have large and ailing pay-as-you-go public pension systems, relatively thin...