The problem of identifying influencers in an online social network (OSN) has received a lot of attention recently. However, the influence a user has on an OSN depends a lot on how active they are, besides their reputation, or the quality of information they are capable of providing. This can be misleading: a common observation about many OSNs is that the most influential users there are not wel...

World-wide interlinked computer networks are forming the foundation for computational societies of software agents. Already, these new societies have encountered problems endemic to human communities, such as overusing common resources with thrashing over virtual memory and competition by packets for network time. Unlike with human societies, these inefficiencies can be overcome by reworking th...

Primalforests.-Accol-dillg to fossil records from coal beds, primeval forests of the South eons ago were complex forests of club moss trees and ferns (Uurdette 1995). Since that time forest composition and dixtl-ihu-tion have changed in response to natural phenomena and later, to the influences of man. Over a long period 01' time primeval forests evolved from club ~nosses 2nd ferns to gymnosper...

The origin of the genetic code represents one of the most challenging problems in molecular evolution. The genetic code is an important universal feature of extant organisms and indicates a common ancestry of different forms of life on earth. Known variants of the genetic code can be mainly divided in mitochondrial and nuclear classes. Here we provide a new insight on the origin of the mitochon...