Nowadays, there are a lot of types of information that we
always search in the internet. From what I have learnt in class, I know that
information is divided into three common types which are primary, secondary and
tertiary sources. These three types have some function that can help us easy to
discriminate.
·
Primary sources are the original object or document or we can call it first-hand information. (eg: diary, letters, journals, speeches, interviews, photographs, and so on.)
·
Secondary sources are known as after fact or
second hand source or are written about primary sources. Moreover, secondary
source can be articles in newspapers, magazines, book that evaluate or
criticize someone else’s original research. (eg: books, articles, radio, tv
documentaries). Secondary source can be a biography that was written about
another person’s life, or it can be
almanacs, encyclopedias, history books.
·
Tertiary sources are the collection of primary
and secondary sources. It also can be most type of references. (ef: bibliographies
of bibliography, reference sources like
encyclopedias, dictionaries, atlases and maps,….)
We can find information which we want in library or
internet. When we search the information is always overload. So, how can I find the exactly meaning of the
word that I want? Here is some tool strategies to help me. However, in each
tool strategy will have their strength and weakness.
Bibliographic databases which don’t contain full text
documents representation of documents. Sometimes it is a hyperlink to full text
version.
Periodical publications include scientific journals, popular
magazine.
However, there are a lot of source in the internet. That can
aid in solving or clarifying a problem.
When we choose and use automated source online and cd-rom,
we should understand the certain points, and use library of congress subject
heading. There are some commons access points: author, title, keyword, lists,…
There are many type of search tools that we can use to
search information such as library catalog, internet or online database.
In AIU we have provided online library catalog called as
OPAC. OPAC can help the student easily to find the book or information in library
by showing the code of the book. Sometimes, we couLd not find the book that we
want in library and it took a lot of time. Therefore, OPAC will help us to find
where it is and we just find the code of the book. We just need to type the
title or author name or subject, then OPAC will come out a list of the book
name.
Secondly, there is another search tool that we always use is
internet. Before this I just know search engines tool. However, from this
class, I know that there are 5 type of internet search tools which are search
engines, meta -search engines, subject directories, information gateways and
specialist batabases.
·
Search engines: we just type the key words then
the number of pages will come out. We have popular search engines like google,
yahoo, altavista,…
·
Meta-search engines: we type the keywords and it
will transmits our search to several individual search engines. There are
suftwx and ixquick which are common for this type.
·
Information gateway: type resources include
Internet catalogues, subject directories, virtual libraries and gateways.
Ex:ELDIS,SOSIG,..
·
Specialized databases like the invisible web, we
need to know where to access the databases. Information can be found in
specialist database that we won’t often locate by using a global WWW search
engine. Ex: Google scholar, commercial Database
From this class, I’m glad that I have learnt many things
that I didn’t know before. To search information is not just from the book or
google, there are many search tool that I can use.
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