The next is that this variation has little to do with things you might suppose would explain it: class sizes, hours of study per subject, and spending per pupil.
The amount of practice, study and hours spent mastering every type of environment (shooting from buildings, helicopters, ships, shooting thru glass, walls, different mathematical calculations for temperature, humidity, altitude, load, etc.).
Whorf never got an advanced degree, but he took graduate classes in his free time with the anthropologist and linguist Edward Sapir, in the nineteen-thirties, and he devoted his leisure hours to the study of Native American languages.
Harvard professor and chair of the program Thomas Piper says the 10-day PCMPCL program comprised six classes each day as well as out-of-hours preparation and study.
Currently there are no guidelines for surgeons comparable to the so-called "bottle to throttle" rules that prohibit commercial airplane pilots from flying within eight hours of their last drink, the study notes.
And earlier this year the evidence against many hours of sitting expanded further: The American Journal of Epidemiology published a study finding that those who work a sedentary job have almost twice the risk of a specific type of colon cancer.
In particular, the American Cancer Society study finds that women who sit for more than six hours a day were about 40% more likely to die during the course of the study than those who sat fewer than three hours per day.
After years of study, thousands of hours of congressional testimony, hundreds of hearings, uncountable public comments, the DOL issued their final Reg 408(b)2 and 404(a) (who makes up these names, anyway?) designed to force better disclosure.
American lawyers are clearly reaping some kind of premium, and the economists behind the Brookings study carefully control for a host of factors including long hours, areas of specialisation, and inherent talent.
I'd get seven hours of shut-eye a night because a six-year, large-scale population study of sleep done at the University of California, San Diego School of Medicine associated it with the lowest death rate among adults.
Earlier this year an American study found that more than two hours of TV viewing per day significantly increased the risk of type-2 diabetes and cardiovascular disease, and more than three hours of daily viewing increased the risk of premature death.
Study subjects who had less than seven hours of sleep were at greater risk than those who got eight hours of sleep a night.
Similarly, a study of large-firm lawyers found that hours worked both in and out of the office positively affected men's chances for partnership, but hours worked out of the office did not help women make partner: Only face time mattered for women.
Two astronauts took eight hours to resurrect a spectrograph which is used to study the chemistry of astronomical objects and failed five years ago.
In one recent study researchers in Germany tested the effects of three hours a week of strength training, jumping and high-impact aerobics on 50 postmenopausal women at risk for osteoporosis.
In the hours since the Oregon study was published in the New England Journal of Medicine, a number of talking points have emerged from those who insist that Medicaid must be making a significant difference in health outcomes.
FORBES: Oregon Study: Medicaid 'Had No Significant Effect' On Health Outcomes vs. Being Uninsured
Upon separating from active duty in the USMC in December 1989 to attend the University of South Carolina as a full-time student, I was introduced to veterans' homelessness through VA's Student Work Study Program where I worked twenty hours a week on behalf of homeless veterans to help them secure food, travel, shelter and life's basic needs.
The author cites a study by Microsoft stating that people work an average of 45 hours per week, but of those, 16 hours are unproductive.
The Annenberg Center's Digital Future study found that Americans now spend an average of 12.5 hours per week online, up from 9.4 hours in 2000.
The study also found a correlation between hours spent on paid work and the frequency of sex in marriage.
According to the Luxembourg Income Study, the typical American worker puts in 1, 820 hours over the course of a year.
The study was conducted in cities around the world on 22 August 2006 between the hours of 11.30am and 2pm local time.
BBC: NEWS | UK | Wales | South East Wales | City's slow pace of life revealed
Britain, according to a recent study by the Economic and Social Research Council, has some of the longest hours in Europe, yet with lower productivity than its neighbours.
The study, although small, could have implications for a variety of workers whose hours switch backwards and forwards from day to night, such as police officers and doctors.
The study reveals that more than 40% of the participants dedicated less than three hours a day to their searches, while another 40% spent more than half their day at it.
The current study found, not surprisingly, that frenetic burnout was strongly related to the number of hours per week people work.
One study estimated that traffic congestion wasted 4.8 billion hours and 1.9 billion gallons of fuel a year for urban Americans.
FORBES: Fasten Your Seatbelts: Google's Driverless Car Is Worth Trillions
An Oxford study of parental time diaries found that in 1975 mothers spent 1 to 2.5 hours a week on child care.
In fact, a recent study suggests that a majority of employers are responding to the economy by expecting employees to work longer hours than before the recession.
While specific exercise advice couldn't be drawn from this study, McClain refers to the government's physical activity guidelines that suggest getting at least five hours of moderate exercise or two-and-a-half hours of intensive exercise each week.
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