Tuesday, March 17, 2009

Search engine (posting 3)

The differences between mamma.com, Google scholar, Yahoo.com, and Ericdigest.com

Differences

Language

Mamma.com
English, François

Google Scholar
English

Yahoo.com
English, Chinese

Ericdigest.com
English, Espanol


Features

Mamma.com
The Mamma home page is clean and uncluttered, and right above the main search query box is a few different tabbed options: the Web (of course), News, Images, Yellow Pages, and the White Pages.
Mamma's image searches are powered by
Picsearch, an image search engine. Mamma's Yellow Page results are powered by Yellow Book, and the White Pages are powered by Infospace. You can also find maps using Mapquest, get driving directions, or use a reverse lookup directory.

Google Scholar
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.
Thus,
Google Scholar is a great way to find scholarly and academic articles on the Web.


Yahoo.com
Yahoo is one of the Web's hottest properties. Yahoo offers many search options on its search portal page; including the capacity to search the Web, search for images only, search in the Yahoo Directory (this gathers results from the human edited subject directory, as opposed to the main search engine driven results page), search locally, search news, and go shopping. Yahoo also provides the advertising program and we can advertise on Yahoo. We also can read the hot issues on the Yahoo as the entertainment. In addition, you can look at local weather results, upcoming movies, the Marketplace, and Yahoo International. Yahoo's home page is pretty crowded but it has a lot to offer. I've used Yahoo for many moons now; for their great Yahoo Mail service and for the My Yahoo search options.

Ericdigest.org
ERIC is a Service Mark of the U.S. Government. This site exists to provide the text of the public domain ERIC Documents previously produced by ERIC.
Ericdigest provide the academic library online and we can search for the full-text scholarly books, journals and more at
www.Questia.com/Learning_Styles. So, Ericdigest is more concern on educational journal article for academic research purpose.

Similarities

Besides the differences, there are a few of similarities for mamma.com, Google Scholar, Yahoo.com, and Ericdigest.org. search engine. The similarities for this all search engine is they are provide the search toolbar at their home page and we can use the search toolbar to search any information, such as we can search images, website, and video. The all search engine also use English as the main language in their home page.

  • About the search engine…..

    A Web search engine is a tool designed to search for information on the World Wide Web. The search results are usually presented in a list and are commonly called hits. The information may consist of web pages, images, information and other types of files.
    There are many search engine available in the internet netwok. For example, the most pupular is mamma.com, google scholar, eric digest, and yahoo.com.

    Mamma.com
    Mamma bills itself as the "mother of all search engines"; and while that's a claim that could be disputed, Mamma puts out a pretty good metasearch engine experience. Mamma retrieves results from approximately a dozen major Internet search engines and directories and has a few nice extra search features that are worth a try.

    Mamma home page
    The
    Mamma home page is clean and uncluttered, and right above the main search query box are a few different tabbed options: the Web (of course), News, Images, Yellow Pages, and the White Pages.

    Mamma Metasearch
    Searching with Mamma Metasearch is easy. Just type in a word or phrase and go. Here's my example: I typed in
    antelope.
    First of all, I saw Mamma Classifieds at the very top of the search results page. From the site: "Results in "Mamma Classifieds" are paid placement listings, meaning that every time you click upon one of them, Mamma receives payment from the site owner/advertiser."

    Mamma Metasearch Options-Images, News, Yellow Pages, White Pages
    Mamma's news search seems to retrieve results from a very limited amount of news sources; the only ones I spotted after numerous searches were MSNBC and the BBC. Mamma's image searches are powered by
    Picsearch, an image search engine. Mamma's Yellow Page results are powered by Yellow Book, and the White Pages are powered by Infospace. You can also find maps using Mapquest, get driving directions, or use a reverse lookup directory.

    Mamma Metasearch Engine Advanced Search
    Mamma's
    Advanced Search offers the power searcher a variety of options. You can select which search services you'd like to be included in your searches (Google is notably excluded), set preferences, etc. A couple things here that I haven't seen in most other Advanced Search offerings were the ability to highlight search terms and limit (or expand) the size of the search result descriptions.

    Mamma Metasearch Engine Search Extras
    You can check out the
    Mamma Explorer Bar, which "saves your searches by letting you select results from a Mamma.com results page into the Explorer Bar", or get the Mamma Toolbar, which gives you instant access to Mamma metasearch (only available for Internet Explorer users).

    Reasons to Use Mamma Meta Search
    I wasn't completely bowled over by Mamma.com, but I do believe that it's a very solid metasearch engine. Results are relevant, and retrieved fairly quickly - which is a common user issue with most metasearch engines. I also appreciated the advanced search options. In short, I would be comfortable recommending Mamma's metasearch engine service to anyone who's looking for a very straightforward, solid, metasearch engine experience.

Google Scholar
What is Google Scholar?

Google Scholar is a great way to find scholarly and academic articles on the Web. Here's an official blurb that sums it all up:
"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 Shortcuts

Google Scholar can be a bit overwhelming; there's a lot of very detailed information here. Here are a few shortcuts you can use to get around more easily:

  • ehrenreich poverty: If you know the general subject of an author's paper, just type in their last name with the subject.
  • "barbara ehrenreich": If you're looking for a specific author's works, type in the full name (or first name initial with last name) in quotes.
  • author: ehrenreich: You can also use the author operator to return an author's works.
  • Google Scholar Advanced Search: There's a few tricks that you only do within Google Scholar Advanced Search for some reason. For instance, if you are looking for a topic from a specific publication, enter in your topic in the "Find articles with all of the words" box, and the publication in the "Publication - Return articles published in" box. Kind of tricky but it's a great way to return targeted results.
  • Restrict the dates: You can also use Google Scholar Advanced Search to restrict the dates of what you're looking for; just enter in what you want in the "Date-Return articles published between" area and you're all set.

Yahoo



Definition:
Yahoo is one of the Web's hottest properties. It was originally just a subject directory, but it now has search engine capability, maintains an extensive directory of sites, and is a major online portal.

Yahoo Home Page

Yahoo offers many search options on its
search portal page; including the capacity to search the Web, search for images only, search in the Yahoo Directory (this gathers results from the human edited subject directory, as opposed to the main search engine driven results page), search locally,search news, and go shopping.
In addition, you can look at local weather results, upcoming movies, the Marketplace, and Yahoo International. Yahoo's home page is pretty crowded but it has a lot to offer. I've used Yahoo for many moons now; for their great
Yahoo Mail service and for the My Yahoo search options.

Yahoo Search Tips

Be concise. Because Yahoo’s results are both from a human edited directory and its own search engine, your results may not be as targeted as you might like them to be. Narrowing down your search to a few specific keywords will help. You can also try these
Yahoo Search Shortcuts to help you get the absolute most out of Yahoo.

"Use the “Search Views". Yahoo’s
main search page has tabs with various search view link, such as Images, Video, Directory, etc. that will help you to refine your search even further. For instance, if you want to look for a Weird Al video, by all means, click on the Yahoo Video tab. Your search results will be accomplished a lot more efficiently.

Use Yahoo Keywords. If you want quick, specific results, you can usually get them by targeting keywords that Yahoo gives out as “shortcuts” to find what you want. You can find this shortcut and more in my article titled
Yahoo Shortcuts, and believe me, it does save a lot of time.

What are ERIC Digests?



ERIC Digests are:

  • 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).
Why ERICDigests.org?

The ERIC Clearinghouse system was eliminated in 2003. ERIC was massively reorganized and most of the content at the former ERIC sites (including the ERIC Digests) found new homes. This site is striving to make it easy to find ERIC Digests that have been produced prior to the end of the former ERIC system. (For information on these changes, see
http://www.lib.msu.edu/corby/education/doe.htm.) The Federal ERIC site no longer maintains the ERIC Digests separately and has mixed them into the ERIC database as hard to use .PDF files which are not found by the major search engines. More links.
























1 comment:

  1. You may want to look at some sites that search the deep web (those sites that crawlers can't get to because you have to fill out a search form). Try:

    www.mednar.com (medical)
    www.biznar.com (business)
    www.science.gov (science)
    www.worldwidescience.org (science)
    www.scitopia.org (science)

    The results are very authoritative.

    Terry

    ReplyDelete