The industrialist and the scientific engineer helped shape the world through their partnership developing and marketing steam engines.
Microsoft followed up the agreement with Yahoo! by licensing search content from Wolfram Research, makers of the Mathematica-powered WolframAlpha scientific search engine.
Thus in the future, the discrimination between "literature database" and "scientific search engine" will be blurred.
We have developed a prototype distributed scientific search engine technology, 'Sciencenet', which facilitates rapid searching over this large data space.
Grey literature was searched using Scirus (now retired), a scientific search engine that searches journals as well as websites.
Last fall, the Allen Institute for Artificial Intelligence in Seattle, Washington, launched a challenge to online scientific search engines by unveiling a service called Semantic Scholar.
In our research we did not want to use generic "scientific" search engines (i.e., Google Scholars or Mendeley) and to perform a search on specific academic databases that are widely diffused among scholars.
We also searched the scientific search engines Scirus and Sciverse, which contain scientific journal content, scientists' homepages, courseware, pre-print server material, patents, and institutional repository and website information.
Unfortunately, these articles will not be found via scientific search engines such as ISI Web of Science, Scifinder and SciVerse ScienceDirect, and the articles refer to methods published in German (see, for example, [ 28]).
The following scientific search engines were consulted: MEDLINE (through OvidSP; Wolters Kluwer, Alphen aan den Rijn, the Netherlands), CINAHL (through EBSCO; EBSCO Information Services, Ipswich, MA, USA), Embase (through Ovid; Wolters Kluwer), PsycINFO (through EBSCO), AgeLine, Cochrane Database of Systematic Reviews, and Database of Abstract of Reviews of Effects (DARE).
