Wednesday November 22, 2017

Kids can actually See what Adults tend to Miss: Study

The findings revealed that while adults are very good at remembering information they are told to focus on, they tend to ignore the rest

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A child with the parents (representational image), VOA

New York, April 11, 2017: Although children are thought of being deficient in many skills when compared to adults, a new study has shown that this limitation in kids can actually be their strength as they can see what adults tend to miss.

“We often think of children as deficient in many skills when compared to adults. But some times what seems like a deficiency can actually be an advantage,” said Vladimir Sloutsky, Professor at the Ohio State University in the US.

The findings revealed that while adults are very good at remembering information they are told to focus on, they tend to ignore the rest.

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Conversely, 4- to 5-year-olds tend to pay attention to all the information that was presented to them — even when they were told to focus on one particular item.

Thus, children noticed things that adults did not catch because of the grownups’ selective attention.

Children are extremely curious and they tend to explore everything, which means their attention is spread out and they end up noticing and remembering more than the adults, Sloutsky noted, in the paper published in the journal Psychological Science.

However, the ability of adults to focus their attention helps them to sit in two-hour meetings and maintain long conversations while ignoring distractions.

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“But young children’s use of distributed attention allows them to learn more in new and unfamiliar settings by taking in a lot of information,” Sloutsky explained.

The fact that children don’t always do as well at focusing attention also shows the importance of designing the right learning environment in classrooms.

“Children can’t handle a lot of distractions. They are always taking in information, even if it is not what you’re trying to teach them. We need to make sure that we are aware of that and design our classrooms, textbooks and educational materials to help students succeed,” Sloutsky said. (IANS)

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Is Longer Screen Time Bad for your Child’s Health? Experts say it might be time to relax the rules

Common Sense Media, a nonprofit group focused on kids’ use of media and technology, said in a report that kids ages 8 and younger average about 2 hours and 19 minutes with screens every day at home.

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New York, October 22, 2017 : Parents of small children have long been hearing about the perils of “screen time.” And with more screens, and new technologies such as Amazon’s Echo speaker, the message is getting louder.

And while plenty of parents are feeling guilty about it, some experts say it might be time to relax a little.

Go ahead and hand your kid a gadget now and then to cook dinner or get some work done. Not all kids can entertain themselves quietly, especially when they are young. Try that, and see how long it takes your toddler to start fishing a banana peel out of the overflowing trash can.

“I know I should limit my kid’s screen time a lot, but there is reality,” said Dorothy Jean Chang, who works for a tech company in New York and has a 2-year-old son. When she needs to work or finds her son awake too early, “it’s the best, easiest way to keep him occupied and quiet.”

Screen time, she says, “definitely happens more often than I like to admit.”

She’s not alone. Common Sense Media, a nonprofit group focused on kids’ use of media and technology, said in a report Thursday that kids ages 8 and younger average about 2 hours and 19 minutes with screens every day at home. That’s about the same as in 2011, though it’s up from an hour and a half in 2013, the last time the survey was conducted, when smartphones were not yet ubiquitous but TV watching was on the decline.

While the overall numbers have held steady in recent years, kids are shifting to mobile devices and other new technologies, just as their parents are. The survey found that kids spend an average of 48 minutes a day on mobile devices, up from 15 minutes in 2013. Kids are also getting exposed to voice-activated assistants, virtual reality and internet-connected toys, for which few guidelines exist because they are so new.

SCREEN TIME
Students play with their iPads at the Steve Jobs school, Aug. 21, 2013. The Steve Jobs schools in the Netherlands are founded by the Education For A New Time organization, which provides the children with iPads to help them learn with a more interactive experience. VOA

Mixed message

Some parents and experts worry that screens are taking time away from exercise and learning. But studies are inconclusive.

The economist Emily Oster said studies have found that kids who watch a lot of TV tend to be poorer, belong to minority groups and have parents with less education, all factors that contribute to higher levels of obesity and lower test scores. For that reason, it’s “difficult to draw strong conclusions about the effects of television from this research,” Oster wrote in 2015.

In fact, the Common Sense survey found that kids whose parents have higher incomes and education spend “substantially less time” with screens than other children. The gap was larger in 2017 than in previous years.

Rules relaxed

For more than a quarter century, the American Academy of Pediatrics held that kids under 2 should not be exposed to screens at all, and older kids should have strict limits. The rules have relaxed, such that video calls with grandma are OK, though “entertainment” television still isn’t. Even so, guidelines still feel out of touch for many parents who use screens of various sizes to preserve their sanity and get things done.

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Jen Bjorem, a pediatric speech pathologist in Leawood, Kansas, said that while it’s “quite unrealistic” for many families to totally do away with screen time, balance is key.

“Screen time can be a relief for many parents during times of high stress or just needing a break,” she said.

Moderation

Bjorem recommends using “visual schedules” that toddlers can understand to set limits. Instead of words, these schedules have images — dinner, bed time, reading or TV time, for example.

Another idea for toddlers? “Sensory bins,” or plastic tubs filled with beads, dry pasta and other stuff kids can play around with and, ideally, be just as absorbed as in mobile app or an episode of “Elmo.”

Of course, some kids will play with these carefully crafted, Pinterest-worthy bins for only a few minutes. Then they might start throwing beans and pasta all over your living room. So you clean up, put away the bins and turn on the TV.

In an interview, Oster said that while screen time “is probably not as good for your kid as high-quality engagement” with parents, such engagement is probably not something we can give our kids all the time anyway.

“Sometimes you just need them to watch a little bit of TV because you have to do something, or you need (it) to be a better parent,” Oster said. (VOA)

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Can Flourishing Islamic State (ISIS) be Stopped in Afghanistan?

The truth about IS and Afghanistan is definitely no picnic

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Taliban fighters react to a speech by their senior leader in the Shindand district of Herat province, Afghanistan, May 27, 2016.
Taliban fighters react to a speech by their senior leader in the Shindand district of Herat province, Afghanistan, May 27, 2016. The rise of IS in Afghanistan has become such a priority that U.S. and Afghan forces sometimes support the Taliban while battling IS, VOA
  • Depending on the location, the proliferation of IS has drawn varied resistance from the Afghan military, U.S. air support and ground troops, local militias, Taliban forces and other militant groups
  • Afghan army planes on Wednesday night accidentally air dropped vital supplies of food and water to IS militants in the Darzab district of northern Jouzjan province instead of to their own besieged troops
  • In the Tora Bora area, where IS has made a strong stand in recent days, local villagers and militias joined with Taliban to rout IS

June 25, 2017: The Islamic State group is rapidly expanding in parts of Afghanistan, advancing militarily into areas where it once had a weak presence and strengthening its forces in core regions, according to Afghan and U.S. officials.

Depending on the location, the proliferation of IS has drawn varied resistance from the Afghan military, U.S. air support and ground troops, local militias, Taliban forces and other militant groups.

Attacking IS has become such a priority in the country, that disparate forces sometimes join together in the ad-hoc fight, with Afghan and U.S. forces finding themselves inadvertently supporting the enemy Taliban in battling IS.

Confusion leads to mistakes

All too often, officials say, mistakes are made due to confusion on the ground.

Afghan army planes on Wednesday night accidentally air dropped vital supplies of food and water to IS militants in the Darzab district of northern Jouzjan province instead of to their own besieged troops, provincial police chief, Rahmatullah Turkistani told VOA. The supplies were meant to help Afghan forces that are countering twin attacks by IS and Taliban militants but were used instead by IS.

“It’s not getting better in Afghanistan in terms of IS,” U.S. Chief Pentagon Spokeswoman Dana White told VOA this week. “We have a problem, and we have to defeat them and we have to be focused on that problem.”

Reinforcements for the IS cause reportedly are streaming into isolated areas of the country from far and wide. There are reports of fighters from varied nationalities joining the ranks, including militants from Pakistan, India, Iran, Iraq, Syria, Russia and Central Asian neighbors.

Confusing scenarios

Still, the Islamic State-Khorasan (ISK) as IS is known in Afghanistan remains a fragmented group composed of differing regional forces with different agendas in different parts of the country.

“IS-K is still conducting low-level recruiting and distribution of propaganda in various provinces across Afghanistan, but it does not have the ability or authority to conduct multiple operations across the country,” a recent Pentagon report said. But where it operates, IS is inflicting chaos and casualties and causing confusing scenarios for disparate opponents.

In the Tora Bora area, where IS has made a strong stand in recent days, local villagers and militias joined with Taliban to rout IS. IS regained ground after a few days, leading to U.S. military air attacks on IS positions in conjunction with Afghan intelligence instructions and army operations.

IS fighters reportedly have fled from mountain caves of Tora Bora, where al-Qaida’s leader Osama bin Laden hid from U.S. attack in 2001.

Families displaced

IS fighters were also reportedly advancing in neighboring Khogyani district, displacing hundreds of families, according to district officials. It is one of several areas in Nangarhar province, near the Pakistani border, where IS has been active for over two years.

Fierce clashes in the Chaparhar district of Nangarhar last month left 21 Taliban fighters and seven IS militants dead, according to a provincial spokesman. At least three civilians who were caught in the crossfire were killed and five others wounded.

“IS has overpowered Taliban in some parts of Nangarhar because the Taliban dispatched its elite commando force called Sara Qeta (Red Brigade) to other parts of the country, including some northern provinces to contain the growing influence of IS there,” Wahid Muzhda, a Taliban expert in Kabul, told VOA.

ALSO READ: Flashback to Terror: 1993 Mumbai Blasts Judgement to Hail on June 27 After 24 Years

Recruiting unemployed youths

IS has also expanded in neighboring Kunar province, where, according to provincial police chief, it has a presence in at least eight districts and runs a training base, where foreign members of IS, train new recruits.

Hundreds of miles from Nangarhar, IS is attempting to establish a persistent presence in several northern provinces where it has found a fertile ground for attracting militants and recruiting unemployed youths, mostly between the age of 13 and 20.

IS has been able to draw its members from the Pakistani Taliban fighters, former Afghan Taliban, and other militants who “believe that associating with or pledging allegiance” to IS will further their interests, according to the Pentagon report.

Hundreds of militants have joined IS ranks in northern Jouzjan and Sar-e-Pul province where local militant commanders lead IS-affiliate groups in several districts.

Darzab district

Qari Hekmat, an ethnic Uzbek and former Taliban militant who joined IS a year ago, claims to have up to 500 members, including around 50 Uzbek nationals who are affiliated with the Islamic Movement of Uzbekistan (IMU) — previously associated with al-Qaida and Taliban in Afghanistan.

IS and Taliban are reportedly fighting over the control of Darzab district in Jouzjan which they stormed this week from two different directions and besieged scores of government forces. The Taliban has reportedly captured the center of the district while IS militants control the city outskirts.

Afghanistan faces a continuing threat from as many as 20 insurgent and terrorist networks present or operating in the Afghanistan-Pakistan region, including IS, the Pentagon said.

“In areas where the government has limited influence and control, IS attempts to emerge and expand there,” Ateequllah Amarkhail, an analysts and former Army general in Kabul told VOA.

Hit-and-hide strategy

IS has also claimed responsibility for several recent attacks in urban areas, however, with a hit-and-hide strategy that is proving effective. And it is engaging too in more skirmishes with U.S. forces that initially were sent to the country to help Afghan forces halt the spread of Taliban.

Three American service members based in eastern Afghanistan were killed in April during operations targeting IS militants, according to the Pentagon.

“ISIS-K remains a threat to Afghan and regional security, a threat to U.S. and coalition forces, and it retains the ability to conduct high-profile attacks in urban centers,” the Pentagon said. (VOA)

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Satellite sends First Quantum Signal to Earth

This is a big step towards achieving a secure and developed way to encrypt communications because ever-improving computer algorithms can not crack them

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Micius
Micius satellite. wikimedia
  • An orbiting satellite has sent the first entangled pair of photons to Earth
  • It is a big step towards achieving a secure and developed way to encrypt communications
  • They can not be cracked by ever-improving computer algorithms

June 18, 2017: It was reported by scientists today that an orbiting satellite has sent the first entangled pair of photons to Earth. It is a big step towards sending quantum keys from satellites — an approach that has been heralded as a secure and developed way to encrypt communications because ever-improving computer algorithms can not crack them.

A laser on China’s Micius satellite, which was launched last year and is dedicated to researches related to quantum satellite communications, spit out pairs of entangled photons from its position, 500 km above Earth. Then two telescopes on Earth – about 1200 km apart — had 5 minutes each day to look for them as the satellite passed over both telescopes. It was found that paired photons survived the journey through Earth’s atmosphere. They detected 1 entangled pair per second out of the 6 million sent in that time.

So how exactly does all this work?

A quantum key needs to be generated first by two people who are looking to communicate. Then, one person receives one of the entangled photons in the pair, the other person receives the other. When the received photons have measured the photons, they obtain bits of information strung together to create a key that they both have. That key can be used to encrypt and decrypt a message. The users can also share a portion of the key publicly to check if it has been compromised. In case if someone tries to intercept the communication at any point, they would then notice a difference between their strings.

Also read: NASA’s Curiosity rover finds a Wide Variety of Minerals in Martian Rocks

There is a certain set of problems as well. Caltech’s John Preskill believes even though it is an important proof of concept, the feat doesn’t address one of the biggest problems with quantum communications. Currently, these messages can’t be sent long distances. Photons, using an optical fiber to carry a quantum signal, can only make it about 100 km before the dissipation of the light.

Quantum systems are similar to optical telecommunications here on earth and need repeaters that are able to amplify the message so it can be passed long distances. But amplifying a quantum message in the same way optical ones are done would effectively result in the destruction of the information. That is why satellite-based communication are being eyed by researchers. The reported 500 km from space is an improvement over optical. Quantum signals were measured in another study published today from a satellite 38,000 km away to a single point. But in deploying a global network which would likely be able to combine optical fiber and satellites, the repeater problem still stands.

Preskill has predicted that it is more likely we will first come up with another form of encryption for communication. “There will be other ways of doing classical public key cryptosystems that we won’t know how to break with quantum computers,” he added.

– prepared by Durba Mandal of NewsGram. Twitter: @dubumerang