W oter an Att eeldt Wouter van Atteveldt http://vanatteveldt.com http://content-analysis.org Semantic Network Analysis is a technique in which the content of a message (such as a newspaper article) is extracted from text and represented as a network of semantic relations between actors and issues, which can be queried to look for specific patterns and answer various research questions. This tec...

Any scientific or technical document is organized hierarchically: some sections of the text (such as the abstract or conclusions) summarize the contents of the main text; sections have titles describing their contents in general words; chapter titles describe the contents of a set of sections; book title describes the contexts of all chapters, etc. Moreover, whole collections of scientific docu...

at different frames of time, most countries have had different approaches to the issue of abortion. also after some years, in the islamic republic of iran, with the ratification of a single article in 1384, therapeutic abortion was announced as permissible; but the above mentioned article lacks the necessary clarification and has some ambiguities that make its interpretation and even correction...

To the Editor — Twenty-five years after the letter announcing the discovery of fullerenes1 was published in Nature, I am struck by the sheer number of journals that have been launched for the primary purpose of publishing research papers in various areas of nanoscience and nanotechnology. Many scientometric studies have focused on citation patterns or the geographical distribution of authorship...