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Welcome

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Welcome

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Welcome

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Showing posts with label Computer. Show all posts
Showing posts with label Computer. Show all posts

Wednesday, 2 October 2013

Are Frequent Facebook Users Less or More Lonely?

By thinknut.blogspot.com
Are Frequent Facebook Users Less or More Lonely?


Science Fair Survival Guide
 

 
                

Objective:

This project explores whether people who are frequent users of Facebook feel less or more lonely than infrequent Facebook-users.

Research Question:

  • Do people who are frequent users of Facebook feel less or more lonely than infrequent Facebook-users?
Facebook has been hailed as a revolution in bringing people - especially people previously separated by time and distance - together. On the other hand, working on a computer is an inherently solitary activity.

Materials:

  • UCLA Lonliness Scale
  • 50 or more test subjects, half of whom log onto Facebook at least once a day, half of whom log onto Facebook less than once a day

Experimental Procedure:

  1. Locate appropriate test subjects.
  2. Administer UCLA Lonliness Scale.
  3. Score scales.
  4. Analyze and compare results for frequent and infrequent Facebook users.
  5. Extension: Interview test subjects about the amount of time they spend socializing face-to-face with other people and/or participating in clubs, sports, or other group activities. Determine if there is any correlation, either positive or negative, between Facebook use and face-to-face socializing.
Terms/Concepts: Facebook, UCLA Lonliness Scale
References:

Tuesday, 3 September 2013

How to Make an Ethernet Cable

By thinknut.blogspot.com


How to Make an Ethernet Cable




Most young people today have grown up using the Internet for school and fun—but they don’t always understand how it works. Here's an activity to get your teenager thinking about how the tool she uses every day for communication, homework assignments, or entertainment operates. By assembling an Ethernet cable of her own, your child can learn more about electronics and Internet technology in a hands-on way.

What You Need:

  • Ethernet Category 5 or 6 cable, available at any electronics store
  • RJ-45 Ethernet cable connectors, available at any electronics store
  • Sharp scissors or razor blades
  • Cable crimper, available at any electronics or hardware store
  • Optional: Cable tester

What You Do:

  1. Look at one end of the cable. Notice how the outer layer, or cable sheath, surrounds several wires inside. Use your razor blade or scissors to carefully strip off about 1" of the cable sheath from the end of the cable. Be sure not to cut or nick any of the wires! Otherwise, you'll need to start over.
  2. Separate and straighten out the wires so they are no longer twisted.
  3. Note how the wires are each different colors. The order you arrange them in will determine what the cable can do. For this project, we will be making “straight-through” cables to connect computers through a hub, or to connect a computer to your Internet connection.
  4. Lay the wires flat in this order:
    1. Green/White
    2. Solid Green
    3. Orange/White
    4. Solid Blue
    5. Blue/White
    6. Orange
    7. Red/White
    8. Red
  5. Make sure the wires lay flat and parallel, with no spaces between them. Trim them evenly, leaving only half an inch (0.5”) sticking out from the uncut cable sheath. Check once more that the color order is still correct.
  6. Hold the RJ-45 connector with the clip facing down and away from you. Push the wires into the plug. Check that the wires are flat and even at the front of the plug, so that they will make a good electrical connection.
  7. Use the crimping tool to squeeze the plug, so the wires are held firmly in place.
  8. Repeat the process with the other side of the cable.
  9. Test the connections using a cable tester, or by plugging it in to make sure it works.
When you’re done, you can use your new cable to surf the Internet!
What's Going On?
Once you type an email or send a search query, the information gets translated into electric pulses, or signals. These pulses go over the wires contained within the Ethernet cable. The cable connects your computer to the Internet connection in your home, usually to a cable or DSL modem.
After it leaves your house, the information travels on the phone or cable companies’ networks to their computer servers. Their servers then send the information on fiber-optic cables to other computers on the Internet to help you send your email, search the net, or play online games.