Scirus is the most comprehensive science-specific search engine on the Internet. Driven by the latest search engine technology, Scirus searches millions science-specific Web pages. Scirus has proved so successful at locating science-specific results on the Web that the Search Engine Watch Awards voted Scirus 'Best Specialty Search Engine' in 2001 and 2002 and 'Best Directory or Search Engine Website' Web Award from Web Marketing Association in 2004, 2005, 2006, and 2007
This page displays the number of entries (articles) in PubMed (Medline) published every year, that conform to search strategy (such as a phrase) you enter.
Wolfram Alpha is like a cross between a research library, a graphing calculator, and a search engine. But does Wolfram Research's "computational knowledge engine," set to debut publicly later this month, live up to its hype as a Web site that Google needs to be afraid of? Wolfram Alpha creator Stephen Wolfram on Tuesday gave a demo of the service to a crowd of online reporters. Few have access to the private test version of the service itself, but we got access Monday night. We found it compelling, if limited. We're eager to see this site develop. It does things with online information that Google does not. Here are our impressions of the current version of Wolfram Alpha.
The GeoEye-1 satellite whizzes in low-Earth orbit, but when will it be taking photos over you? Alpha will show you on a map, in this case a 3D view of the globe that shows the satellite above Antarctica. It'll also tell you the satellite's 16,812-mph average velocity, its 428.4-mile altitude, and 98-minute orbital period. Photo by Stephen Shankland/CNET Caption by Stephen Shankland
Discover more than one million documents from scholarly journals, magazines, conference proceedings, and other special publications from prestigious scientific societies and technical publishers.
OAIster is a union catalog of digital resources. We provide access to these digital resources by "harvesting" their descriptive metadata (records) using OAI-PMH (the Open Archives Initiative Protocol for Metadata Harvesting).
Collexis High Definition Search enables fast, accurate and extraordinary knowledge retrieval and discovery quickly and accurately by utilizing fingerprinting technology. The Collexis Fingerprint empowers users to identify and search for documents, experts, trends, and new discoveries more quickly, precisely – and thoroughly – than conventional search engines. For users, the savings in research dollars are extraordinary. High Definition Search positions Collexis as a world leader in the vital area of knowledge management and discovery software.
A. Newell, and H. Simon. Communications of the ACM, 19 (3):
113-126(March 1976)p. 116:
"The Physical Symbol System Hypothesis. A physical
symbol system has the necessary and sufficient
means for general intelligent action."
p. 120:
"Heuristic Search Hypothesis. The solutions to
problems are represented as symbol structures.
A physical symbol system exercises its intelligence
in problem solving by search--that is, by
generating and progressively modifying symbol
structures until it produces a solution structure."
p. 121:
"To state a problem is to designate (1) a test
for a class of symbol structures (solutions of the
problem), and (2) a generator of symbol structures
(potential solutions). To solve a problem is
to generate a structure, using (2), that satisfies
the test of (1).".