"Yangtze River" and "Pollution"n provided no hits for me under the school's catalog. So instead, i just searched up just the term "Yangtze" to see if i could find an article that could address some possible environmental impacts. Yangtze provided only 18 hits.
1. a. Lyman P. Van Slyke
b. Yangtze : nature, history, and the river
c. N/A
d. Reading, Massachusetts
e.Addison-Wesley Pub. Co.
f 1988
2. Location: Book Stacks
Call No. : DS 793.Y3 V35 1988
Status: On The Shelf
3. Yangtze River -- History
4. Yangtze River History : Yangtze : nature, history, and the river / Lyman P. Van Slyke
(There was only one entry)
5. a.The subject heading search provided less results than the keyword search.
b. Although the results were not what i completely wanted, they were more on target than the keyword search.
c. I think the whole idea of subject search is to produce results that are similar in subject. This causes it to be more on target that a keyword search. A keyword search may find results with similar letter structure, but not necessarily topic meaning.
B. Research Log Entry
A keyword search is like using Youtube to find videos; It finds all results that have the same spelling. A subject heading search is like the "Tags" on Youtube. The tags correspond to similar videos that share a common idea. By clicking on the tags on youtube, you are able to find videos that wouldn't automatically show up on the intial search. This is the same as keyword and subject heading searches.
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I don't know if you went to the book itself, but you could check the index for one of these books and see if the environment or pollution is discussed anywhere in the book. As I mentioned earlier, the catalog is searching larger items, so will require broader search terms. I think you'll find your topic will work well in the databases, which we will begin to tackle in a couple of weeks.
ReplyDeleteAs for the subject headings, yes, they give you results that are similar. The analogy to tagging is partially correct because there is human intervention in tagging. A person "tags" with a term s/he thinks up. The analogy breaks down, though, because each person thinks up his/her words, while subject headings are assigned from previously prescribed terminology that is pre-structured. The person reading the book picks one of these previously structured headings and doesn't think up a term on his/her own.