Botany is one of the oldest sciences done south parallel 60 °S, although few professional botanists have dedicated themselves to investigating Antarctic bryoflora. After publications liverwort and moss floras in 2000 2008, respectively, new species were described. Currently, bryoflora comprises 28 116 species. Furthermore, bryology has entered a phase characterized by use molecular tools, parti...

Coding methods for fingerprinting digital information are considered, with the aim of deterring users from copyright violation. A general model for discrete fingerprinting is presented, along with a simple embedding method for text documents. Different types of attacks are discussed, including attacks from colluding pirates. Some preliminary results are derived for random fingerprinting codes. ...