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share the fruits; clear away; pop up; break new ground; tear down |
While Jennifer was at home taking an online exam for her business law class, a monitor (监控器) a few hundred miles away was watching her every move.
Using a web camera equipped in Jennifer's Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked—remotely—to prevent Internet searches, and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?
In the battle against cheating, this is the cutting edge and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid—that students haven't just searched the Internet to get the right answers.
Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance.
Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students' identities using personal information, such as the telephone numbers they once used.
Other programs can produce unique exams by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test questions are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating.
Mobile payments have made our life (convenient) by freeing us from the trouble of having to take our wallets out with us. But a UK supermarket has gone one step (far), allowing customers to pay using just fingertip.
Shoppers at the Costcutter store at Brunei University London can pay for items (use) the special vein(纹路) pattern in their fingertips, (report) The Telegraph. It's the worlds first store (make) use of such technology.
This new method of payment (mean) that customers can pay for items in just three (second).
Sthaler, the company behind the technology, explained that it uses infrared scanners(红外扫描仪) to read the pattern of veins in the finger. It links this to the customer's bank details, are kept safe by payment provider WorldPay. The firm is also responsible for millions of online shoppers' details around the globe.
The company says dozens of Brunei students are already using the technology, and it hopes to have signed up 3, 000 students out of 13, 000 November.
