Abstract: The photoplethysmographic (PPG) signal is an important source of information for estimating heart rate (HR). However, the PPG signal could be strongly contaminated by the motion artifact of ...

THE parhelia of January 27, which Mr. Ch. H. Allen in Mentone describes, has also been observed at several places in Switzerland: for instance, at Glaris and at Basle. The phenomenon has here been ...

Download the latest Matrox Parhelia/P650/P750 drivers. OS: Windows 2000/XP. Category: Graphics Cards.

Sundogs are also referred to as mock suns or parhelia (meaning 'with the sun') . It can be seen in the sky flanking the real sun on cold winter days as bright patches of light to the left, right, or ...