Here I write briefly about the similirities and differences amongst 4 search engines. They are; Mama.com, Google Shcolar, Eric Digest and Yahoo.com. All of these search engines are similar in term of it functions to search information, pictures, news, directories, and many more. Besides that they also got similarity in term of their function to search friends in order to or to explore the virtual world directly with your own PC.
The differences amongst these search engines. Google scholar and Eric digest is more concern about searching materials for information across disciplines across many disciplines and sources: peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations.
Mama.com Search Engine
Mama.com search engine Mamma.com is a "smart" metasearch engine — every time you type in a query Mamma simultaneously searches a variety of engines, directories, and deep content sites, properly formats the words and syntax for each, compiles their results in a virtual database, eliminates duplicates, and displays them in a uniform manner according to relevance. It's like using multiple search engines, all at the same time.
Created in 1996 as a master's thesis, Mamma.com helped to introduce metasearch to the Internet as one of the first of its kind. Due to its quality results, and the benefits of metasearch, Mamma grew rapidly through word of mouth, and quickly became an established search engine on the Internet. Mamma.com's ability to gather the best search results available from top search sources and to provide useful tools to its users has resulted in its receiving multiple Honourable Mentions in the Best Metasearch category in the annual
Google Scholar Scholar Search Engine
Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations. Google Scholar helps you identify the most relevant research across the world of scholarly research. Google Scholar aims to sort articles the way researchers do, weighing the full text of each article, the author, the publication in which the article appears, and how often the piece has been cited in other scholarly literature. The most relevant results will always appear on the first page.
Features of Google Scholar
Search diverse sources from one convenient place
Find papers, abstracts and citations
Locate the complete paper through your library or on the web
Learn about key papers in any area of research
Eric Digest Search Engine
Eric Digest provides one way to access the ERIC Digests (education articles) produced by the former ERIC Clearinghouse system. It contains short reports (1,000 - 1,500 words) on topics of prime current interest in education. There are a large variety of topics covered including teaching, learning, libraries, charter schools, special education, higher education, home schooling, and many more.
Short reports (1,000 - 1,500 words) on topics of prime current interest in education. There are a large variety of topics covered including teaching, learning, libraries, charter schools, special education, higher education, home schooling, and many more. Targeted specifically for teachers, administrators, policymakers, and other practitioners, but generally useful to the broad educational community. Designed to provide an overview of information on a given topic, plus references to items providing more detailed information Produced by the former 16 subject-specialized ERIC Clearinghouses, and reviewed by experts and content specialists in the field. Funded by the Office of Educational Research and Improvement (OERI), of the U.S. Department of Education (ED).
Yahoo Search Engine
Yahoo! offers you new, faster ways to find the information you're looking for, whether it's on the Web or part of the Yahoo! network. You can access a range of features with one simple search.
You can find the basic search box on the main Yahoo! page. Or visit our ad-free, dedicated Yahoo! Search start page. Type a word or phrase into the search box and click "Search.
On the Yahoo! Search results page, tab links above the search box let you change the type of search and focus your results on images, breaking news, videos, or Yahoo! Directory listings. For example, after searching the Web for sites about "hybrid cars," you can click "Images" to search the Web for pictures of hybrid cars