The pendulum is a reliable time measurer because, for small arcs, the time required for a complete swing (period) depends only on the length of the pendulum and is almost independent of the extent of the arc.
John S. Wilson, jazz critic of The New York Times, noted in 1983 that Mr. Brown's group had "retained the style and sound" of the swing period and yet had a "freshness that makes it seem quite up to date".
In particular, the swing period was approximately constant while the stance period decreased with speed, resulting in a decreasing stepping period and duty ratio.
Dan Aquilante, of the New York Post, who described the song as "an optimistic, R&B ballad with an upbeat, percolating rhythm that has all the bombast and power of the New Jack Swing period of the early '90s".
Such fluorescence intensity fluctuation repeated with every swing cycle and remained consistent with the swing period of 15 s (see Figure 5).
Due to a short stance and long swing period with no contact with the ground, the proportion of relatively silent periods is likely to be longer in running than in walking.
The specific results shown are for human sprinting, with the following fixed parameters: body mass (m) = 80 kg, leg length (Lleg) = 1 m, gravity (g) = −9.81 ms−2, average forward velocity = 10 ms−1 and leg swing period = 0.315 s; however, the general patterns hold across running speeds.
Adding the kinematic inputs for an appropriately scaled human runner of leg length 1 m, jogging at a speed V relating to a Froude number Fr of 1 and a leg swing period of 0.315 s, allows the consequences of duty factor in terms of muscle work and mean push-off power to be calculated numerically.
First, lawmakers should expand the short-swing period to one full year; six months is too short.
During sleep, ventilation may swing between periods when the amplitude and frequency of breathing are high and periods in which there is little attempt to breathe, or even apnea (cessation of breathing).
If he does not take his medications, he said, he swings between periods of intense euphoria and deep depression.
