1) There are many dangers that are associated with the "digital divide", and many disadvantages as well for children who do not have access to the internet on a regular basis at home. For one thing they will feel very outcasted, they won't be able to relate to the students or other people who do have access to the internet. This divide makes teaching harder because the students who don't have internet at home and have to do an assignment on the internet won't be able to, they will fall behind and get bad marks in school and never succeed. A school usually has a website that holds information that might be useful to a student, there could be exam dates or scheduals that they need to know about are hard for the students who don't have internet access to get to.
2) Schools and the community are doing a little bit to try and help out those students who don't have internet access. In schools the students are allowed to research information for projects in school time, instead of having to do it on their own time and that can be hard for those students who don't have internet access. Communities have tried to get more computers into public libraries so that those who don't have access to the internet are able to go downtown and use the internet to get caught up in all the excitment of the town and the world.
3) I think that those who don't have internet access should try to find other ways to get information, like going to a friends house or trying to get all work done at shcool when they have a project that is having to do with the internet. The community could help out more as well, maybe by having fundraisers for those who don't have internet access so that they would be able to get the internet and not feel so left out. Or the community could make more things for students to do for fun instead of having to be on the internet all the time. Schools could try harder to make students feel equal, like if there is an assignment to do with the internet to let those who can't work on them at home to get more time to finish their project, or giving them a differnt assignment to do that has nothing to do with the internet.
Sources:
Myself
Sam
My Aunt Cara
Parents
Monday, January 14, 2008
Saturday, January 12, 2008
Moduel B Assignment 7
Google.ca:
People can add their own websites to google, all they need to do is to go onto google and find where it says "Add your URL" and click on it. Google states on that page that the URL you put on their might not appear on the search engine. That all depends on the top-level page from the host. It doesn't matter if you are a buisness person or a student, anyone can put ads onto google. This search engine ranks its pages by its top-level page from that website's URL. The ads on the search engine don't effect how the pages are ranked, the ads are in their own little section at the side of the web page.
Ask.com
Ask puts their advertisements onto the pages that correspond with the topic of the ad, these ads range from opening buisnesses to help wanted ads. The ads on this search engine don't affect the ranking of the pages. The person who owns the ad is responsible for the taking care of and updating of the ad. The pages that people apply to Ask are ranked by their protocol. The better the protocol on the page the better ranking that page will have on a search. An ask crawler, machine, manages all the pages on the search engine, it also is required to make updates to all pages when it is nessecary.
Microsoft/msn.com:
The ads on this website are paid for. The owner must pay each time a person on the web clicks on their ad. The ads are placed where people can find them quick and easy, where ever they search when they are searching for something on the web. The ads correspond to the search the person does, which doesn't effect the ranking of the pages on that particular search. The search engine ranks its pages by how many times a person clicks on one. If more and more people use one page then that page will have a higher ranking than the other pages from that search. The people who submit pages to this search engine are responsible for keeping it up to date.
Which I liked better:
For each of these search engines I looked up the subject of writing. I found that google and msn.com had the same pages show up. Ask.com had some really random things about writing, it wasn't very exciting. I liked google.ca better than all the other search engines. The reason for this is that I understand how to use it better than the other ones. It is easily laid out and it is easy to find information about anything you need, like for this assignment it was easy to find info on the search engine. Over all I would pick google to search for anything I need. It is the most popular search engine and I believe that is because this search engine makes it easy to find what you are looking for and I believe that it is the faster search engine out of the three that I chose to look up for the assignment.
People can add their own websites to google, all they need to do is to go onto google and find where it says "Add your URL" and click on it. Google states on that page that the URL you put on their might not appear on the search engine. That all depends on the top-level page from the host. It doesn't matter if you are a buisness person or a student, anyone can put ads onto google. This search engine ranks its pages by its top-level page from that website's URL. The ads on the search engine don't effect how the pages are ranked, the ads are in their own little section at the side of the web page.
Ask.com
Ask puts their advertisements onto the pages that correspond with the topic of the ad, these ads range from opening buisnesses to help wanted ads. The ads on this search engine don't affect the ranking of the pages. The person who owns the ad is responsible for the taking care of and updating of the ad. The pages that people apply to Ask are ranked by their protocol. The better the protocol on the page the better ranking that page will have on a search. An ask crawler, machine, manages all the pages on the search engine, it also is required to make updates to all pages when it is nessecary.
Microsoft/msn.com:
The ads on this website are paid for. The owner must pay each time a person on the web clicks on their ad. The ads are placed where people can find them quick and easy, where ever they search when they are searching for something on the web. The ads correspond to the search the person does, which doesn't effect the ranking of the pages on that particular search. The search engine ranks its pages by how many times a person clicks on one. If more and more people use one page then that page will have a higher ranking than the other pages from that search. The people who submit pages to this search engine are responsible for keeping it up to date.
Which I liked better:
For each of these search engines I looked up the subject of writing. I found that google and msn.com had the same pages show up. Ask.com had some really random things about writing, it wasn't very exciting. I liked google.ca better than all the other search engines. The reason for this is that I understand how to use it better than the other ones. It is easily laid out and it is easy to find information about anything you need, like for this assignment it was easy to find info on the search engine. Over all I would pick google to search for anything I need. It is the most popular search engine and I believe that is because this search engine makes it easy to find what you are looking for and I believe that it is the faster search engine out of the three that I chose to look up for the assignment.
Monday, January 7, 2008
Lab Log Entry #7
A) LEO, MEO, and GEO satellites
LEO or Low Earth Orbiting satellites are used for the coverage of small areas on the Earth and travel at high angular velocities, which allows it to keep its orbit constant. LEO's are deployed in satellite constellations. Because LEO satellites cover such a small area on Earth there needs to be many LEO satellites to keep orbit over the whole Earth. An example of a satellite constellation that a LEO can travel in is a GPS, it allows you to find your way around when you are driving or hiking somewhere and you don't know where you are going.
MEO or Medium Earth Orbiting satellites are satellites that oribit about 100 miles to 1000 miles above the Earth's surface; these types of satellites are higher up than a LEO satellite but are lower than a GEO satellite by means of where they are in the universe. It takes a MEO satellite about 2-12 hours to complete its orbit around the Earth. Their orbit pattern is an almost perfect circle which infers that its speed and altitude is always constant. Because of a MEO satellites altitude Earth based transmitters that have low frequencies can contact them. When there are several MEO satellites there can be global wireless communication all around the world, it would take many more than 7 LEO satellites to have the same amount of coverage that a MEO satellite does. An example of a MEO satellite is a satellite phone.
GEO or Geosynchronous Earth Orbiting satellites are satellites that constantly passes points on the Earth on a regular basis. If there is a GEO satellite over the equator than it is known as a geostationary satellite. GEO are usually sationed over parts of the equator and are used for the transmitting and recieving of antennas on Earth that don't need to track satellites to work. An example of an antenna that a GEO has been responsible for revolving are global communication, weather forecasting and television broadcasting. A disavantage of a GEO satellite is its altitude, because GEO satellites are so far away from the Earth it takes a radio signal about .25 seconds to reach the satellite and return to Earth, this is a problem because radio signals could interfere with telecommunication on Earth, making it harder for people to communicate between each other.
LEO or Low Earth Orbiting satellites are used for the coverage of small areas on the Earth and travel at high angular velocities, which allows it to keep its orbit constant. LEO's are deployed in satellite constellations. Because LEO satellites cover such a small area on Earth there needs to be many LEO satellites to keep orbit over the whole Earth. An example of a satellite constellation that a LEO can travel in is a GPS, it allows you to find your way around when you are driving or hiking somewhere and you don't know where you are going.
MEO or Medium Earth Orbiting satellites are satellites that oribit about 100 miles to 1000 miles above the Earth's surface; these types of satellites are higher up than a LEO satellite but are lower than a GEO satellite by means of where they are in the universe. It takes a MEO satellite about 2-12 hours to complete its orbit around the Earth. Their orbit pattern is an almost perfect circle which infers that its speed and altitude is always constant. Because of a MEO satellites altitude Earth based transmitters that have low frequencies can contact them. When there are several MEO satellites there can be global wireless communication all around the world, it would take many more than 7 LEO satellites to have the same amount of coverage that a MEO satellite does. An example of a MEO satellite is a satellite phone.
GEO or Geosynchronous Earth Orbiting satellites are satellites that constantly passes points on the Earth on a regular basis. If there is a GEO satellite over the equator than it is known as a geostationary satellite. GEO are usually sationed over parts of the equator and are used for the transmitting and recieving of antennas on Earth that don't need to track satellites to work. An example of an antenna that a GEO has been responsible for revolving are global communication, weather forecasting and television broadcasting. A disavantage of a GEO satellite is its altitude, because GEO satellites are so far away from the Earth it takes a radio signal about .25 seconds to reach the satellite and return to Earth, this is a problem because radio signals could interfere with telecommunication on Earth, making it harder for people to communicate between each other.
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