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Tuesday, April 28, 2009

E-commerce

Ecommerce definition and types of ecommerce

  • Ecommerce (e-commerce) or electronic commerce, a subset of ebusiness, is the purchasing, selling, and exchanging of goods and services over computer networks (such as the Internet) through which transactions or terms of sale are performed electronically. Contrary to popular belief, ecommerce is not just on the Web. In fact, ecommerce was alive and well in business to business transactions before the Web back in the 70s via EDI (Electronic Data Interchange) through VANs (Value-Added Networks). Ecommerce can be broken into four main categories:

  • B2B (Business-to-Business)Companies doing business with each other such as manufacturers selling to distributors and wholesalers selling to retailers. Pricing is based on quantity of order and is often negotiable.
  • B2C (Business-to-Consumer)Businesses selling to the general public typically through catalogs utilizing shopping cart software. By dollar volume, B2B takes the prize, however B2C is really what the average Joe has in mind with regards to ecommerce as a whole. Having a hard time finding a book? Need to purchase a custom, high-end computer system? How about a first class, all-inclusive trip to a tropical island? With the advent ecommerce, all three things can be purchased literally in minutes without human interaction. Oh how far we've come!
  • C2B (Consumer-to-Business)A consumer posts his project with a set budget online and within hours companies review the consumer's requirements and bid on the project. The consumer reviews the bids and selects the company that will complete the project. Elance empowers consumers around the world by providing the meeting ground and platform for such transactions.
  • C2C (Consumer-to-Consumer)There are many sites offering free classifieds, auctions, and forums where individuals can buy and sell thanks to online payment systems like PayPal where people can send and receive money online with ease. eBay's auction service is a great example of where person-to-person transactions take place everyday since 1995.



Companies using internal networks to offer their employees products and services online--not necessarily online on the Web--are engaging in B2E (Business-to-Employee) ecommerce.G2G (Government-to-Government), G2E (Government-to-Employee), G2B (Government-to-Business), B2G (Business-to-Government), G2C (Government-to-Citizen), C2G (Citizen-to-Government) are other forms of ecommerce that involve transactions with the government--from procurement to filing taxes to business registrations to renewing licenses. There are other categories of ecommerce out there, but they tend to be superfluous.


http://www.digitsmith.com/ecommerce-definition.html

Friday, April 24, 2009

computer effects

These are some bad effects of computer to our health

H
ealth effects of being addicted of computer games
Sitting too much and not getting enough exercise. Strain on the eyes. Social problems because a person who is addicted with computer games doesn't socialize well and is more interested about getting back to their computer than making friends or having fun. The fun IS in their computer games. Eating junk food because usually people addicted to the computer won't eat meals on time.
Bad effects of computer to our health
The constant staring at a screen and not moving for multiple hours can have negative effects on the eyes. From using the mouse for an extended period of time, people can come down with carpel tunnel syndrome, which is the equivalent of pulling a muscle in your wrist. Besides from that, the lack of movement and the slouch in posture can cause problems with your lower back, gluten region, and hamstrings. Lastly, any exposure to light stimuli, such as the computer screen, will make falling asleep immediately after much harder, since your mind is still processing information.
physical health that a computer user might suffer due to have a computer or another electric equipment in your bedroom
Some scientist's believe that computers can change something in the immediate atmosphere which can cause depression. I cant remember quite what it was they changed, but I do remember that it said that this / these things are charged to be either positive or negative. And a computer changes their polarity. And the polarity it changes them to can cause depression in people.

Another problem some people face is RSI, or repetitive strain injury. Though just having the computer in your room wont cause this. It is similar to tennis elbow and comes from long periods of using the keyboard and mouse without taking a break. We didn't evolve to spend hours of typing at a time.

If you have the computer monitor switched on, you will notice that it shines out at you. Let me give you an example: If you have a television switched on in a darkened room, it just glows in the corner. Whereas if you have a computer on, it lights up the whole room. This can cause damage to eyes and also cause severe migraines.

Tuesday, April 21, 2009

Negative impacts of computers on society


  • These are some examples of computer

  • The younger generation would rather communicate through computer (easier) than actually working towards making friends or finding love the good old fashion way. Thus, part of the magic of falling in love is lost. People breakup in emails rather than facing the person and as all generations have been taught before we must take responsibility for our own actions.

  • A high percentage of people sit at their computer far too long and some people lose reality as far as social activities and learning social skills. Not to mention packing on the weight and the lack of exercise that will haunt them further on down the road.

  • Sitting behind a computer all day is hard on the eyes.

  • Being on the computer too much takes away the imagination for most (although for a very few they can be creative in advertising and digital imagery, etc. on websites.)

  • Computers can distract a person so much they lose contact with the reality around them such as taking time with family, husbands, boyfriends, girlfriends, wives and children.

  • It opens up kiddy porn and other immoral things.

  • More crime is committed through the Internet.

  • More misinformation by SOME people on the Internet can cause problems for the younger generation.

  • More person problems by two people on the Internet may cause heartbreak or mistrust. It's impossible to know someone well over the Internet.

  • Spammers are annoying.

  • Hackers can ruin your computer system.

Many people do work on the computer from their home but smart people do so much, then get up, get moving and get into shape. They spend time with family and friends and limit their time on the computer.


There is a new generation coming up where information is at one's finger tips too easily and then it becomes a personal thing in some people's lives. Before one knows it all will be like zombies wandering around (out of shape) and wondering why no one is relating to them.

While technology is a wonderful thing it is almost likely that it can be used in an immoral or wrong way. There is a price to pay for everything even if it appears it's making life easier on people.

reference
http://wiki.answers.com/Q/What_are_the_negative_impacts_of_computers_on_society