Leo Pennings

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This paper addresses new questions around media performance as a result of the rise of centralized content portals such as iTunes or MySpace. We first describe the rise of centralized content portals in different media industries, and discuss how these portals are creating a dominant position for themselves by using lock-in strategies. Then we describe the(More)
Replicative form DNA of bacteriophage M13 was cleaved into specific fragments by an endonuclease isolated from Hemophilus aegyptius (endoR.HaeII) and an endonuclease from Arthrobacter luteus (endoR.AluI). The fragments were ordered as to construct a circular map of the phage M13 genome by: (a) using each fragment as a primer for the synthesis in vitro of(More)
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