Is more always better? We address this question in the context of bibliometric indices that aim to assess the scientific impact of individual researchers by counting their number of highly cited publications. We propose a simple model in which the number of citations of a publication depends not only on the scientific impact of the publication but also on other ‘random’ factors. Our model indic...

In this paper we give an outline of recent algebraic results concerning theories and models of the untyped lambda calculus.

I n a recent issue of PNAS, Maia and McClelland (1) report findings that raise questions regarding the interpretation of a highly influential neuropsychological study of decisionmaking behavior (2). That study has been interpreted widely as evidence that decision-making behavior is governed by emotional factors outside of awareness. The impact of Maia and McClelland’s study is not so much to ch...

IT outsourcing has three broad forms: (i) Single-Sourcing, where the client outsources to one primary vendor, (ii) Single-Sourcing with subcontracting , where the primary vendor involves other/secondary vendors in the project, and (iii) Multi-Sourcing, where the client outsources to multiple primary vendors. Using a dataset of large IT outsourcing contracts from the SCD database with 22,031 lar...