3rd Day
7/7/15
As I mentioned in the
earlier journal, that I thought I know quite well about the use of ict, but the
topic on Web research turned me wrong. What I know was just to type the key
words in the address bar and then search, which was just a basic search.
A web search engine is a software system that is
designed to search for information on the World Wide Web. The search results are generally presented in a
line of results often referred to as search engine results pages (SERPs).
There are two web search; Basic search and Advance search.
There were five search tools in the advance search, they are;
i.
BOOLEAN
OPERATORS
ii.
TRUNCATION
iii.
WILDCARDS
iv.
RESTRICTING
SEARCH SITE
v.
RESTRICTING
SEARCH BY FORMATS.
i.
Boolean
Operators are used to connect and define the
relationship between our search terms. When searching electronic databases, we
can use Boolean operators to either narrow or broaden our record
sets. The three Boolean
operators are AND, OR and
NOT.
AND is used to narrow down the search by typing
all the key words. Example; stock market AND trading
OR is used to broaden our search by writing two
or more synonyms. This will ensure the search on any one of the topics.
Example;
ecology OR pollution
NOT helps
us in narrowing our search by excluding the content that we do not want to be
included. Example; Population NOT Census.
ii.
Truncation:
Truncation, also
called stemming, is a technique that broadens your search to
include various word endings and spellings.
- To use truncation, enter the
root of a word and put the truncation symbol at the end.
- The database will return
results that include any ending of that root word.
Examples:
child* = child, childs, children, childrens, childhood
genetic* = genetic, genetics, genetically
- Truncation symbols may vary by
database; common symbols include: *, !, ?, or #
iii. Wildcards:
Similar to truncation,
wildcards substitute a symbol for one letter of a word.
iv.
RESTRICTING
SEARCH SITE is also
known as stemming. It is a technique to broaden our search to include various
word endings and spellings. We need to type the root word and insert truncation
symbol(*,!,? or #) and then search. Eg, “child*”
v. RESTRICTING SEARCH BY FORMATS is a way of narrowing down the
search and saving time is by restricting with file formats. Type the type of
the file that we are looking for will reduce our search task to a great deal.
Example, “pdf,hmt,xls,docs,ppt,….
The search tools were of great help in obtaining the wanted information from the internet in a short span
of time, and this is what a busy teacher really in need of. Now, I realized that I have not made wrong choice by opting ICT as it really enhanced my knowledge which would be a great help to me, my children and friends.
Thank You.