Abstract

Although new information retrieval systems (search engines, metasearch engines, databases, etc.) continually appear, the daily work of information professionals leaves little time to evaluate them. As a result, on numerous occasions a system is used, and even recommended, without knowledge of its functions and the adequacy of its search algorithm. An analysis was conducted to better understand the specifics of the search engines specialized in health sciences freely accessible via the internet, to assess for quality and determine which ones offer the best results.

Abstract

The general idea behind the concept of extended opac or expanded library is to improve the opac to give it a few features that make him an internet portal like any other, in which users can interact with both bibliographic information and otherwise, with librarians and other users. Beyond discovery tools, there is the initiative eXtensible Catalog, aimed at promoting the full functionality of the opac extended, allowing a proper connection between the integrated management system library and content management system Drupal, which heralds a new set of web services based on inteoperability, metasearch aggregation of disparate information sources and catalogs, and the exploitation of the possibilities of web 2.0 and more there, of the Linked data.