Climate scientists have already looked at changes related to Sun spot activity - a cycle of approximately 11 years - and long-term changes in the Sun's brightness, which has a cycle that lasts for centuries.
But in the current cycle, sunspot activity has collapsed.
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Sunspot activity waxes and wanes on the sun in a 11-year cycle, and we are approaching the peak of sunspot activity, probably reaching it in 2013, according to Hesse.
We need to help families break the cycle of welfare benefits and criminal activity.
Solar activity fluctuates over an approximate 11-year cycle.
Freeing up spectrum will result in a virtuous cycle in which networks can support more mobile activity, leading device manufacturers and developers to be more creative and consumers to use their cellphones more, CTIA contends.
The NBER's Business Cycle Dating Committee has determined that a peak in business activity occurred in the U.S. economy in March 2001.
By making the selection process a transparent community activity, Turner said, START.ac has created a unique feedback cycle.
Two years into this recovery we are quickly approaching the point in the cycle where we might expect a new cyclical contraction in economic activity.
These travelling waves occur hundreds of times a night, and most commonly at a frequency, 1 cycle per second, which has been shown to depress the activity of synapses.
Appointments have little relationship with economic activity in the state concerned, and extra spending will occur at all stages of the cycle.
Company executives expressed hope that oil directed activity and the presence of large international players and credit availability will sustain the North American cycle over a long period of time.
For corporations, less consumer spending means retrenchment, layoffs and diminished capital spending, which further diminishes business activity and puts more of a drain on consumer spending...and the downward cycle feeds on itself.
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