Questões Militares Para aspirante da escola naval

Based on the text below, answer the question.

Facebook deserted by millions of users in biggest markets 

Facebook has lost millions of users per month in its biggest markets. In the last six months, Facebook has lost nearly 9m monthly visitors in the US and 2m in the UK. Studies suggest that its expansion in the US, UK and other major European countries has peaked. In the last month, the world's largest social network has lost 6m US visitors, a 4% fall, according to analysis firm Socialbakers. In the UK, 1.4m fewer users visited in March, a fali of 4.5%. Users are also turning off in Canada, Spain, France, Germany and Japan, where Facebook is extremely popular. 

Alternative social networks have seen surges in popularity with younger people. Instagram, the photo-sharing site, got 30m new users in the 18 months before Facebook bought the business. Path, the mobile phone-based social network founded by former Facebook employee Dave Morin, which only allows its users to have 150 friends, is gaining 1m users a week. 

Facebook is still growing fast in South America. Monthly visitors in Brazil were up to 6% in the last month to 70m, according to Socialbakers, whose Information is used by Facebook advertisers. India has seen a 4% rise to 64m - still only a fraction of the country's population, so there is room for more growth. 

As Facebook itself has warned, the time spent on its pages from those sitting in front of personal computers is decreasing fast because people now prefer to use their smartphones and tablets. Although smartphone minutes have doubled in a year, to 69 a month, that growth may not compensate for dwindling desktop usage. 

Facebook will tell investors about its performance for the quarter. Wall Street expects revenues of about $1.44bn, an increase from $1.06bn a year ago. Shareholders will want to know how fast the number of mobile Facebook users is growing, and whether advertising revenues are increasing at the same rate. Facebook founder Mark Zuckerberg has created a series of new initiatives designed to appeal to smartphone users. One initiative, Facebook Home, is software that can be downloaded onto Android phones to feed news and photos from friends - and advertising - directly to the owner's locked home screen.

(Adapted from http://www.guardian.com.uk)

Based on the text below, answer the question.

Facebook deserted by millions of users in biggest markets 

Facebook has lost millions of users per month in its biggest markets. In the last six months, Facebook has lost nearly 9m monthly visitors in the US and 2m in the UK. Studies suggest that its expansion in the US, UK and other major European countries has peaked. In the last month, the world's largest social network has lost 6m US visitors, a 4% fall, according to analysis firm Socialbakers. In the UK, 1.4m fewer users visited in March, a fali of 4.5%. Users are also turning off in Canada, Spain, France, Germany and Japan, where Facebook is extremely popular. 

Alternative social networks have seen surges in popularity with younger people. Instagram, the photo-sharing site, got 30m new users in the 18 months before Facebook bought the business. Path, the mobile phone-based social network founded by former Facebook employee Dave Morin, which only allows its users to have 150 friends, is gaining 1m users a week. 

Facebook is still growing fast in South America. Monthly visitors in Brazil were up to 6% in the last month to 70m, according to Socialbakers, whose Information is used by Facebook advertisers. India has seen a 4% rise to 64m - still only a fraction of the country's population, so there is room for more growth. 

As Facebook itself has warned, the time spent on its pages from those sitting in front of personal computers is decreasing fast because people now prefer to use their smartphones and tablets. Although smartphone minutes have doubled in a year, to 69 a month, that growth may not compensate for dwindling desktop usage. 

Facebook will tell investors about its performance for the quarter. Wall Street expects revenues of about $1.44bn, an increase from $1.06bn a year ago. Shareholders will want to know how fast the number of mobile Facebook users is growing, and whether advertising revenues are increasing at the same rate. Facebook founder Mark Zuckerberg has created a series of new initiatives designed to appeal to smartphone users. One initiative, Facebook Home, is software that can be downloaded onto Android phones to feed news and photos from friends - and advertising - directly to the owner's locked home screen.

(Adapted from http://www.guardian.com.uk)

PART 1: READING COMPREHENSION

Based on the text below, answer the question.

Exercising Body and Mind at the Same Time?

New Device Lets You Read While You Run

Engineers from Purdue University have devised a new System that will facilitate a very specific type of physical and mental multitasking - helping treadmill runners to read text on a display screen.

The System, called ReadingMate, compensates for constantly bobbing eyes so runners can train for a marathon while reading their favorite novel. 

"Not many people can run and read at the same time," said Ji Soo Yi, an assistant professor of industrial engineering at Purdue University. "This is because the relative location of the eyes to the text is vigorously changing, and our eyes try to constantly adjust to such changes, which is burdensome."

Instead of increasing the size of the displayed font, Yi and his colleagues decided to compensate for a runner's head motion. 

"You could increase the font size and have a large-screen monitor on the wall, but that's impractical because you cannot have numerous big screen displays in an exercise room," Yi said. 

According to a report on the system published recently in Human Factors: The Journal of the Human Factors and Ergonomics Society, the engineers recruited 15 multitasking volunteers to perform a "letter-counting" test while jogging on a treadmill and using ReadingMate. The participants were asked to tally how many times the letter 'F' appeared in two lines of text nested in 10 lines of text that were displayed on a computer monitor.

While performing the test, the participants wore goggles equipped with infrared LEDs. An infrared camera tracked the motion of the LEDs, essentially recording the movement of the runner's head. To compensate for the head motion, the displayed text was moved as the volunteers ran along the treadmill with their heads bobbing. 

The researchers found those who used the ReadingMate system performed better at multi-tasking their physical and mental assignments, particularly when it carne to reading smaller font sizes and smaller line-spaced text. 

Besides aiding people with the novel task of reading while running, the researchers said their system could be used to assist airline pilots or those working in heavy industry.

"Both may experience heavy shaking and turbulence while reading information from a display," Kwon said. "ReadingMate could stabilize the content in such cases." 

(Adapted from http://www.redorbit.com/news)