Slide internet research

– A search engine is a program designed to help find information stored on a computer system such as the World Wide Web, or a personal computer.

• The search engine allows one to ask for content meeting specific criteria (typically those containing a given word or phrase) and retrieves a list of references that match those criteria.

– Retrieves a list of references that match those criteria.

– In most cases, search engine usually refers to a Web search engine, which searches for information on the public Web

• Web Search Engines:

– Google

– MSN Search

– Yahoo! Search

– Northern Lights

– Ask Jeeves

• Academic Journal Search Engines (Subscription)

– Academic Journal Search Engines (Subscription)

– Emerald Journal

– Proquest

– EBSCO Business/IT Search

– IEEE Journal Databases

• Library Search Engines (OPAC)

– APIIT/UCTI Library Search engine

– National Library Search engine

– They use software programs known as robots, spiders or crawlers.

– A robot is a piece of software that automatically follows hyperlinks from one document to the next around the Web.

– When a robot discovers a new site, it sends information back to its main site to be indexed.

• For the same reason you need a card catalogue or book in a library.

– There is lots of great and useful information in a library, but it's physically impossible to examine all the books personally.

• Not even the most indefatigable web-surfer could hyperlink to all the documents in the aptly named World Wide Web.

• Search engines gives you the ability to look for more information from one source (Search engine)

1. Know what you’re looking for:

– Are you looking for information about a person?

– A company?

– A software product?

– A health-related problem?

– Do you want to find a job?

– Do you need to research a term paper?

– Document a news story?

– Size up your company's competition?

– Using keywords and phrases:

– Searching on a noun (the name of a person, place or thing), remember that most nouns are subsets of other nouns. Enter the smallest possible subset that describes what you want.

– Be specific.

Example: If you want to buy a car, don't enter the keyword "car" if you can enter the keyword "Toyota." Better still, enter the phrase "Toyota showrooms" AND the name of the city where you live.

1. Using special functions:

2. Read the search engine help files and take advantage of the available search refining options.

3. Use phrases, if possible.

4. Use the Boolean AND (or the character +) to include other keywords that you would expect to find in relevant documents.

5. Example: If you want to find out how medical details about your grandmother's diagnosis of Alzheimer's Disease, try entering "Alzheimer's" AND "symptoms" AND "prognosis." If you want to find out about Alzheimer's care and community resources, query on "Alzheimer's" AND "support groups" AND "resources" AND NOT "symptoms."

4. Using special constrains:

– Read the search engine help files and take advantage of the available search refining options.

– Limiting the kind of file to look for such as pdf. or html.

– Limiting the time frame such as last 6 months or 5 years.

– The choice of language

– Finding the information you want on the Internet is only the first step. There is a lot of material available, but not all of it is equally reliable and useful.

– As a researcher, his/her large part of the job is not simply to find information but to make judgements about its merit.

– Before any material found being used, one needs to spend some time evaluating it for accuracy and importance.

• The source:

– The source of the material might give you a clue to it's reliability.

– A site maintained by a university or government organisation might be more reliable than one maintained by a private citizen.

– Research papers published by academic bodies are usually refereed or accepted by board of editors who are the experts of the field.

– Accredited Author:

– The status of the writer is often of considerable importance in deciding the reliability of information.

– One can probably assume that material written or otherwise provided by a known expert in the field is likely to be reliable.

– i.e. A PhD or Professor related to the topic

– Author’s credibility can be verified by looking at their list of publications and bodies that they are attach to

• Age of Online Information

– Sometimes the age of information matters. If one needs current statistics then check the age of the material found.

– As a rule of thumb, in most fields anything more than five years old is probably out-dated.

• Frequency of citation

– But just because you have never heard of the author of the page doesn't mean that the information is inaccurate or unreliable, but it does mean that you can't take it at face value.

– You might have to do some cross-checking, either elsewhere on the net, or with books or articles.

• Internet Design and integrity:

– How an Internet resource is designed may have a lot of influence on how you use it.

– A site which is always too busy to access, too slow to download or too difficult to navigate may not be worth your valuable time, no matter how useful and relevant the information is.

• Results from a web search engine is useful if used effectively

• Unless the source is accredited (i.e. web journals), take the information at face value.

• Use together with primary research and physical resources (i.e. core text books, reference books)

Дата добавления: 2015-10-29