Questões de Vestibular PUC - PR 2016 para Vestibular - Primeiro Semestre
Foram encontradas 6 questões
Read the text and choose the CORRECT option.
Portable devices
Buddy, can you spare a watt?
Trading power could free users from dead-battery tyranny
ONE of the most annoying features of smartphones is that they run out of power just when you need it most. After a day of e-mailing, streaming music, downloading podcasts, watching cat videos and snapping selfies, a device can easily be left without enough charge to make an emergency call. What would help, reckons Paul Worgan of the University of Bristol, in England, is to give portable devices the ability to share some of their power.
Mr Worgan and his colleagues have come up with a wireless-charging system which they call PowerShake. To use it someone holds a phone with an expiring battery against another device—a phone, or even a smartwatch or a fitness band—and this initiates a power transfer from one to the other. Some 12 seconds of contact provides enough juice to make a one-minute telephone call. One minute of contact would allow, say, a four minute music video to be watched. The researchers will present their idea to CHI2016, a conference on computer-human interaction, in San Jose, California, in May.
Available in:<http://www.economist.com/news/science-and-technology/21697800-trading-power-could-free-users-dead-batterytyranny-buddy-can-you-spare>
I. New smartphones will have power to spare.
II. PowerShake wireless-charging system will help you to charge your out of power smartphone.
III. You have to plug in both phones for 12 seconds.
IV. This new feature will allow you to make a short phone call.
V. The researchers will present this new idea at their university, in San Jose, California.
Read the text.
Amazon keeps expanding its empire
Elizabeth Weise
Amazon has doubled the number of air freight cargo planes it is leasing, a further build out of its internal delivery system.
Atlas Air Worldwide on Thursday said it had signed an agreement with the Seattle internet retailer to operate 20 Boeing 767 for the company for ten years.
Operations under the agreements are expected to begin in the second half of 2016 and ramp up to full service through 2018, Atlas said.
In addition, Amazon will acquire as much as 20% of Atlas.
The planes will be used to move packages between Amazon’s fulfillment centers, which package goods, to its sortation centers, which sort them into local delivery pallets that can be taken to the Post Office for bulk delivery, the company said.
The planes will also be used by Amazon to move goods between its fulfillment centers across the country to other centers where they are needed for one- and two-day delivery, as no one Amazon center can stock the 20 million items Amazon typically has available for two-day delivery.
The deal isn't surprising, said John Haber, CEO of Spend Management Experts, a supply chain management consulting firm.
“This is just the most recent step in Amazon building out a massive logistics network designed to move more of their transportation and distribution under their direct control," he said.
Available in:<http://www.usatoday.com/story/tech/2016/05/06/amazon-further-builds-out-air-freight-network/84035574/>
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What does the title of the text mean?
Dreaming brain rhythms lock in memories
It is the clearest evidence to date that REM sleep is critical for memory. By switching off certain brain cells, the researchers silenced a particular, rhythmic type of brain function - without waking the mice. If they did this during REM sleep, the mice failed subsequent memory tests. The research is reported in the journal Science.
REM sleep is the phase during which, at least in humans, dreams take place - but the question of whether it is important for settling new memories has been difficult to answer. Recent studies have tended to focus on deep, non-REM sleep instead, during which brain cells fire in various patterns that reflect memory consolidation and "re-play" of the day's experiences. During REM sleep, while our eyes flicker and our muscles relax, exactly what the brain is doing is something of a mystery. But it is a type of sleep seen across the animal kingdom, in mammals and birds and even lizards.According to the strip the expression ‘I stand corrected’ means:
What does this text aim to?
Zika virus makes Rio Olympics a threat in Brazil and abroad, health expert says
Amir Attaran calls for postponement or moving of Games and says biggest risk is spreading the virus to countries without adequate healthcare infrastructure.
As Brazil reels from a spiraling political crisis and its deepest recession in decades, a public health specialist in Canada has added to the country’s woes with a high-profile call for the 2016 summer Olympics – slated to kick off in Rio de Janeiro in early August – to be postponed or moved due to the Zika outbreak. Speaking to the Guardian on Thursday, Attaran described the idea of going ahead with the games as both “indescribably foolish” and “monstrously unethical”. The potential risks to visitors range from braindamaged children to death in rare instances, he added. “Is this what the Olympics stand for?”
Adapted from: http://www.theguardian.com/world/2016/may/12/rio-olympics-zika-amir-attaran-public-health-threat
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