Simply stated, single-frequency networks are when a broadcaster uses multiple transmitters to send the same signal over the same frequency.
State intervention is justified only by the chaos that would be caused by a free-for-all over the use of the frequency spectrum.
Over the past 10 years, the frequency of pipeline spills has decreased by 59%, and the volume of pipeline spills has decreased by 43%, even as overall production has increased both the mileage of active pipelines and the freight tons shipped by them.
Trading glitches have increased in frequency over the last few years, zapping investor confidence on markets and their infrastructure.
FORBES: NYSE Trading Glitch Hits 216 Securities, Zaps Half Of Average Trading Volume
Nightly television pictures of the tragic destruction from tornadoes over the past months might make one wonder if the frequency of tornadoes is increasing, perhaps due to the increasing levels of CO2 in the atmosphere.
As this plays out monetary velocity, i.e. the frequency money turns over, will increase giving us the moderate inflation Ben is hoping to induce.
The SEC is also studying the effects of various trends that have shaped the U.S. stock markets over the course of the last decade, including the proliferation of high frequency trading and of off-exchange trading in so-called dark pools.
The incident will certainly ratchet up the pressure to rein in the increasingly influential high frequency trading firms, which have taken over more than half the daily trading volume in the U.S. stock markets.
Over the last few months, one skill has been brought up with increasing frequency: a facility with the language of business, and, in particular, finance.
FORBES: Successful Chief Information Officers Speak the Language of Business: Finance
The numbers change as we get older, with the overall frequency of all communication declining, but even in the 65 and over group, daily texting still edges calling 4.7 to 3.8.
CNN: We never talk any more: The problem with text messaging
Over the years, the government has taken steps to address the problem, including regulating low-frequency noise like water pumps, and reducing maximum decibels.
Oddly enough, I find the frequency of the battles a bit over the top.
Over the past two years, however, high-frequency traders become an increasingly controversial, often dominating trading and reshaping markets.
He thinks such a step is necessary, since forecasts show that storm frequency in Florida will pick up over the next few years.
Then Heathrow could concentrate on serving the business market, which prizes frequency and convenience over price.
ECONOMIST: Breaking up BAA: A new departure for London’s airports | The
The overall number of sunspots typically varies in frequency over 11 year cycles.
On top of that, the frequency of major U.S. hurricane strikes over the past several decades is down about one-third compared with the first half of the 20th century.
The sensors work by detecting extremely low-frequency electrical activity over a distance of 5 microns (one micron being equal to one millionth of a metre).
FORBES: Can Forensic Scientists Tell How Old A Fingerprint Is?
"While a 150, 000-170, 000 per month trend in payrolls is far from booming, it is strong enough over time to keep the unemployment rate moving down, " said Jim O'Sullivan at High Frequency Economics.
In four out of the five districts with over 43 CFA core members, floor shininess has increased 63% and frequency of trash pickup has gone, on average, from 1 to 26 times in a day.
Its scientific committee said low-frequency ambient marine noise levels had increased in the northern hemisphere by two orders of magnitude over the last 60 years.
BBC: NEWS | Science/Nature | The deafening sound of the seas
应用推荐