This paper presents a new data compression method for current loop transmitters. In this method, the 4-20 mA current domain is divided into some equal pieces that are used for distinct data domain with a constant relative resolution, resulting in widening the signal span. This technique eliminated the need for high resolution ADC’s or DAC’s in communication of 4-20mA current loop signals. Furth...

We report new high resolution (0.6 − 1.7′′) images of GM Aur in the 12CO J = 2→1 line and the 1.3 and 2.7 mm continuum. The dust disk, located at the center of the CO disk, is resolved by the 0.6′′ beam of the interferometer. We derive a minimum radius of ∼ 200 AU, and a total mass (dust+gas) of about ∼ 0.025M . Our CO observations also resolve the Keplerian rotation of the gas disk. Since the ...

Human beings perceive their surroundings based on sensory information from diverse channels. However, for humancomputer interaction we mostly restrict the user on visual perception. To investigate the effect of additional tactile feedback on pointing and selection tasks we conducted a comparative evaluation study based on ISO 9241-9. The 20 participants performed horizontal and vertical one-dir...