How laptops can boost learning in college classrooms

Washington, May 21 (ANI): A study has shown that despite laptops being a major distraction in college classrooms, they can actually increase students” engagement, attentiveness, participation and learning.

But in order to achieve it, University of Michigan professor Perry Samson said the instructor must set the right stage.

Samson is a professor in the Department of Atmospheric, Oceanic and Space Sciences who has received honours for his educational technology work.

He has developed robust interactive student response system called LectureTools that utilizes students” laptops.

A paper about how students report that LectureTools affected their learning is published in the May edition of the journal Computers & Education.

“If you allow laptops in the classroom without a plan for how you”ll use them, you can potentially invite disaster,” he said.

“It”s unlikely that students will be so entranced by class material that they won”t wander off to their favourite social networking sites.

“The key is to deliberately engage students through their computers. LectureTools does just that,” he added.

LectureTools is an interactive student response system and teaching module. Instructors at more than 400 colleges and universities have set up accounts to use it.

Samson recently surveyed close to 200 students who, over the past three semesters, have taken his Extreme Weather lecture course that utilized LectureTools.

Students reported that while they did sometimes stray from in-class tasks, laptops with LectureTools made them feel more attentive, engaged and able to learn, compared with classes that don”t use the system.

“Our surveys showed that while laptop computers can be a distraction, students of this generation feel that they are capable of productive multitasking,” Samson said.

Through LectureTools, laptops serve as robust “clickers”, providing drastically more interaction than the class polling that clicker-based student response systems offer.

LectureTools also allows students to take notes directly on lecture slides. Students can anonymously ask the instructor”s aide a question through a chat window during class, and others can see these questions and answers.

Students can also rate their own understanding of each slide, giving the professor valuable feedback.

“It is the first successful instance I”ve seen of dramatic use of information technology to augment the real-time classroom experience,” John King, vice provost for academic affairs and the William Warner Bishop Collegiate Professor of Information, said.

“LectureTools significantly increases the interactivity between the student and the instructor without disrupting the flow of the class. The instructor gets a lot more detailed information about where the students are while maintaining normal operation in the class,” he added.

Close to half of students surveyed said that having a laptop in class increased the amount of time they spent on tasks unrelated to the lecture. But a full 78 percent agreed that laptops in class made them more engaged.

Approximately half said that having their laptops made them more attentive. Seventy percent said laptops had a positive effect on their learning.

LectureTools significantly increased class participation as well. The system allows students to chat with an instructor”s aide, posing questions without raising a hand and having to speak up in front of their peers.

“You can ask the dumb question without fear,” Samson said.

More than half of the students asked at least one question during the semester, which is a much higher percentage than Samson saw in classes without LectureTools, he said.

The paper is called “Deliberate Engagement of Laptops in Large Lecture Classes to Improve Attentiveness and Engagement”. (ANI)

Organic electronics that allows transport of both positive and negative charges developed

Washington, August 18 (ANI): A new research from the University of Washington scientists has described an approach to organic electronics that allows transport of both positive and negative charges.

Until now, however, circuits built with organic materials have allowed only one type of charge to move through them.

Now, new research from the University of Washington makes charges flow both ways.

“The organic semiconductors developed over the past 20 years have one important drawback. It’s very difficult to get electrons to move through,” said lead author Samson Jenekhe, a UW professor of chemical engineering.

“By now having polymer semiconductors that can transmit both positive and negative charges, it broadens the available approaches. This would certainly change the way we do things,” he added.

A major drawback with existing organic semiconductors is most transmit only positive charges.

In the last decade, a few organic materials have been developed that can transport only electrons.

But, making a working organic circuit has meant carefully layering two complicated patterns on top of one another, one that transports electrons and another one that transports holes.

“Because current organic semiconductors have this limitation, the way they’re currently used has to compensate for that, which has led to all kinds of complex processes and complications,” Jenekhe said.

Over the past few years, Jenekhe’s lab has created polymers with a donor and an acceptor part, and carefully adjusted the strength of each one.

In collaboration with Watson’s lab, they have now developed an organic molecule that works to transport both positive and negative charges.

“What we have shown in this paper is that you don’t have to use two separate organic semiconductors. You can use one material to create electronic circuits,” Jenekhe said.

The material would allow organic transistors and other information-processing devices to be built more simply, in a way that is more similar to how inorganic circuits are now made.

The group used the new material to build a transistor designed in the same way as a silicon model and the results show that both electrons and holes move through the device quickly.

The results represent the best performance ever seen in a single-component organic polymer semiconductor, according to Jenekhe.

Electrons moved five to eight times faster through the UW device than in any other such polymer transistor.

A circuit, which consists of two or more integrated devices, generated a voltage gain two to five times greater than previously seen in a polymer circuit.

“We expect people to use this approach. We’ve opened the way for people to know how to do it,” Jenekhe said. (ANI)

Jennifer Aniston off the single’s market?

Washington, June 20 (ANI): Hollywood actress Jennifer Aniston has fuelled rumours of romance with Bradley Cooper after the two were recently spotted enjoying a cozy date.

Several weeks after Aniston and Cooper reportedly flirted at a party for her movie Management, the pair was seen enjoying a comfy late-night dinner at the romantic Italian restaurant Il Cantinori in Manhattan.

“It was a date,” People quoted a source as saying.

“She is taking it slow. She is obviously looking for love, but is not about to rush into anything,” the source added.

However, Cooper dismissed the link-up, insisting he finds rumours linking himself to Aniston “flattering.”

He added that he’s looking “for humour, great personality, intelligence, inner and outer beauty” in a woman. The one must? “She has to like my dogs (Samson and Charlotte). My dogs and I come in a package.” (ANI)

Obama’s brother denies sex assault on young girls

London, April 13 (ANI): U.S. President Barack Obama’s half brother, Samson, has denied that he had tried to sexually assault a group of young girls in Britain last year.

Samson was refused UK visa when records showed that he had been arrested for attempted sex attack on a group of young girls, including a 13 year-old in Berkshire last November, as per reports.

The 41-year-old, one of the President’s 11 half brothers and sisters by his father who had four partners, was said to have been later fingerprinted but not charged before he left the country.

Samson, however, has allegedly told a UK-based relative, Ian Manners, that he was detained over a pub scuffle, insisting: “I was involved in a pub fight which had nothing to do with any young girls.”

“He would not get involved with 13- year-old girls. It is unthinkable,” the Sun quoted Manners as saying. (ANI)

Reports: Obama’s half-brother refused entry into Britain

London – Britain refused an entry visa for US President Barack Obama’s half-brother, Samson Obama, who was implicated in alleged sexual assault in Britain and a false document attached to his statement, British media reported Sunday. Samson, a Kenyan, was stopped and turned back by immigration officials at the East Midlands Airport in January while en route to Washington for Barack Obama’s inauguration, the Press Association reported.

The news agency cited a Home Office spokesman as confirming that the visa was refused after immigration officers noticed a falsified document included in Samson Obama’s visa application.

Further inquiries then showed he had been arrested by police in Berkshire after an alleged sex attack on a girl around the time of his last stay in Britain last November but not charged, according to the News of the World reported.

Samson, a mobile phone shop manager, and the US president have the same father. (dpa)

Obama’s brother refused UK visa after ‘sex assault on young girls’

London, April 12 (ANI): Barack Obama’s half brother was denied UK visa after being accused of sexually assaulting a group of young girls in Berkshire last November.

Samson Obama was headed for Washington via Britain to attend the historic inauguration that saw his brother become the US President in January.

But he came under the scanner of immigration officials at East Midlands Airport when the hi-tech database revealed Samson had been taken into custody by Brit cops after trying to sexually attack a group of young girls, including a 13 year-old.

He was later fingerprinted and not charged before leaving the country but not without providing his details, which were recorded on the Home Office’s new database of prints and biometric details.
It was alleged that it was this “sensitive issue” that came into light as he tried to step in to the British borders to pay a visit to his relatives while on his way for the swearing-in ceremony.

“This was obviously an extremely sensitive issue when it was flashed up by the database,” News of the World quoted a Home Office source as saying.

“But the system is designed to flag up people who have come to the attention of the police in the UK and are then trying to return,” the source added.

A Home Office spokesman confirmed Samson, one of the President’s 11 half brothers and sisters by his father who had four partners, was stopped from entering the country after immigration officers detected a false document with his visa application.
Samson was believed to have reached Washington through a connecting flight from East Midlands to the US. (ANI)

Dispute over a few paise costs couple lakhs

Mumbai: For the sake of a few paise, lakhs were lost. A Mumbai businessman had to pay a hefty price after a bank refused to accept his pay orders
because they were not rounded off to the nearest rupee. The pay orders were for his income-tax dues. Unable to get the new, rounded-off cheques in time, the businessman failed to meet his March 31 tax deadline and ended up paying a stiff penalty of Rs 2.06 lakh.

The State Bank of India, which turned businessman Samson Paul away, says that its computerised system does not accept paise. And it wasn’t just a whimsical cashier who had the paisa problem. The matter was bumped up to the level of assistant general manager. The bank refused to relent even after the income tax department itself pleaded with the bank that it accept the pay order.

The taxmen have now taken up the matter with the RBI and the finance ministry. RBI spokesperson Alpana Killawala told TOI that banks could not refuse a pay order on the ground that the paise had not been rounded off to the nearest rupee.

Paul and his wife Piedade, who are South Mumbai residents, run a diamond and garments brokerage business. They were raided by the income tax in December last year, following which their accounts in several banks were frozen. The Pauls were asked to pay tax dues of Rs 2.82 crore.

On March 31, the last day of the financial year, the couple went to I-T officials and said they would adjust the amount in their accounts against their dues. “Since the accounts were frozen, our officials instructed the banks to activate the accounts.

The Pauls broke their fixed deposits and instructed the banks to issue pay orders in favour of SBI, which was permitted to collect the dues,’’ an I-T official said.
The arrangement ran into trouble when the couple went to the SBI’s capital market branch to deposit nine pay orders issued by various banks. “The officials accepted only two pay orders. In the others, there was a mention of paise. We tried to argue with the bank that they could not refuse the orders, but in vain. The bank insisted that the couple go back to the various issuing banks and get fresh pay orders rounded off to the nearest rupee,’’ the I-T official said.

Short of time, the Pauls decided to go to HSBC Bank, which had issued pay orders of nearly Rs 2 crore. Here they ran into a different roadblock. “HSBC refused, saying it was quite legal to issue pay orders that had paise after the decimal point,’’ said the official. Caught in a bind, the couple could only pay Rs 30.22 lakh by the end of the day. “Finally, on Thursday (April 2), SBI accepted the pay orders but refunded the paise to income tax,’’ said the I-T official.