Week 2 - Finding Information on the World Wide Web


The fastest growing segment on the Internet is the World Wide Web (WWW, or simply "the Web"). The Web functions by client/server protocol. People can install a Web server on a computer on the Internet (AİBÜ web server), and then they can set up "pages" that contain, text, pictures/graphics, sounds, and even movies and small computer programs. People on the Internet who have client software (better known as "browsers") can visit the sites and see everything. A site may allow visitors to interact in some way, e.g. signing a guest book, or downloading files. A site can also allow visitors to fill out forms and register to classes on a Web page - that way you don't have to mail it in. Of course, you still have to mail in your check, unless the site allows you to enter a credit card number.

In addition to the ability have multimedia presentations, another popular feature of the Web is the ability to move from place to place very easily. The person who sets up a page can provide "links" (also called "hyperlinks") to other pages and sites that they think visitors may want to visit.

The most popular Web browser programs are Microsoft Internet Explorer. These are full-featured programs that can handle text and graphics. They can also deal with sounds and movies, although they often need help from other programs to do this. Passing pictures, graphics, sounds, and movies takes an enormous amount of computer resources, and not evey machine can handle this. 

Assignment

Internet Explorer at campus almost always open with the AİBÜ home page, http://www.ibu.edu.tr/; if not, you'll have to enter the address in the Location box.

The best way to learn Internet Explorer or any other browser is to simply play with the program. If you get "lost", or can't get back, just hit the button that looks like a house, or select Go | Home from the menu, to get back to the home page. To start the assignment, you should be at the campus home page. If you aren't there now, type in the URL, or quit the program and start it again. If you don't have this assignment on paper, you can open a new browser window (Internet Explorer: File | New | Window) so you can switch back and forth between this assignment and the pages you are viewing.

  1. Find the "Fakültelerimiz" link and follow it.
  2. Find and follow the "Fen Edebiyat Fakültesi" link.
  3. Find and follow the "Biyoloji Bölümü" link.
  4. Find and follow the "Bölüm Hakkında" link.
  5. If you've done everything correctly, you are now reading the "bölümümüz" document. Mail this page to bio210@ibu.edu.tr as an attachment, using the File / Send / Shortcut to Desktop in Internet Explorer. The subject must be bio210_lw2a.
  6. Now, all on your own, find the home page for Dr. Hakan Turker of the Department of Biology. Find the answers to the three questions below, and put them in the email for this assignment. No cheating or helping each other!!!
    1. In what year did Dr. Turker get his Ph.D.?
    2. What is the title of the BIO - 449 course that he teaches? 
    3. How many experimental tanks are there in his lab?
  7. You're done with this part of the assignment. Don't go away; there's more below.

There are many search engines available on the Web, and they all claim to offer some advantage or another. When you really want to be sure you have found every bit of information on a topic, it is worth checking several of them. But for this assignment, we are going to concentrate on a specific one, Google.

The most popular and complete subject directory is probably a site called Google. You can find it at http://www.google.com. Go there now so that you can do the first part of your assignment.

Find a link to a journal called Genes and Development. Write down the URL for this site (the journal itself, not the Google page that links to it), and add it to the email for this assignment (see below). List the URL in your email message on a line all by itself, like this:

http://www.ibu.edu.tr

Your instructor will follow this URL, and to get your credit, the instructor has to be at the home page for Genes & Development.

Let's say you wanted to find out if there were any clinical trials going on in California that involved gene therapy for cystic fibrosis. If you enter the single word gene in the Google search box, Google will retrieve the locations of nearly six million pages that include the word. Considering how common the word is, this is not surprising. If you add the word therapy, Google will retrieve around 600,000 documents that include both words, and on the first screen of results, there will be several informative sites about gene therapy. If you put the words in quotes - "gene therapy" - Google will only show the 306,000 pages that contain the phrase (fewer, actually, than a year ago). Looking for phrases rather than separate words is a powerful search technique.

Adding the phrase "cystic fibrosis", so that the query reads "gene therapy" "cystic fibrosis", reduces the hits to just under 19,000 (the four words entered separately, not in phrases, give nearly 28,000 results). Add california (you don't need to capitalize it), and there are fewer than 3,000 hits. Those are a lot to go through, but the way Google is designed, the first ones it displays are the ones that have the greatest number of links on other sites, so they are more likely to be useful.

Perhaps you are seeking a summer internship at Stanford University. Add stanford to the search terms (they are now "gene therapy" "cystic fibrosis" california stanford) and there are 637 hits. Some of those also involve the University of California. If you aren't interested in those, you can exclude web pages that have the phrase "university of california" by putting a minus sign in front of it. The search "gene therapy" "cystic fibrosis" california stanford -"university of california" gives 219 results. 

(numbers are just sample, they are not real)

Now for the next part of the assignment:

Dr. Hakan Turker published a research paper in his PhD program. Citation address for this paper is

"Turker, H., A. G. Eversole and D. E. Brune, 2003c. Comparative Nile Tilapia and Silver Carp Filtration Rates of the PAS Phytoplankton. Aquaculture, 220: 449-457"

Hint: Aquaculture is published in Science Direct

Here are the questions from the assignment above that you should answer in your email. Each answer must be on a separate line. The subject must be bio210_lw2b. Send us an email message to bio210@ibu.edu.tr  

    1. What is the URL for Genes & Development?
    2. Attach Dr. Turker's paper in pdf format to your e-mail.
    3. What is the absract of Dr. Turker's paper (copy it and paste to the message)?