Diatoms, unicellular algae with ornate silica shells, have fascinated amateur and professional biologists ever since the invention of the microscope. But these days, diatoms and their exquisite shells are also attracting the attention of nanotechnologists who hope that diatoms will teach them how to make minute structures currently beyond the capabilities of materials scientists. And now these ...

The TRIAL SOLUTION EU project focused on the publication of personalized electronic documents based on existing scientific books. Its general approach consists in slicing electronic books into elementary learning resources and annotating them with metadata enabling the retrieval of resources by a semantic search. The annotated resources are published into a repository available for teachers or ...

In the late nineties, access to Portuguese data in electronic form was scarce, and was considered one of the bottlenecks limiting the advance of natural language processing of Portuguese (Santos, 1999a), so Linguateca’s launching of AC/DC i had as purpose to significantly increase the amount of data – and its quality, in that the data was annotated and classified. To the best of my knowledge, A...

The Penn Treebank, in its eight years of operation (1989-1996), produced approximately 7 million words of part-of-speech tagged text, 3 million words of skeletally parsed text, over 2 million words of text parsed for predicateargument structure, and 1.6 million words of transcribed spoken text annotated for speech disfluencies. This paper describes the design of the three annotation schemes use...