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Synergy Between Visual and Auditory Signals and Its Influence on the Follow-Up Regulation Quality

Słowikowski J., Dźwiarek M., Konarska M.

International Journal of Occupational Safety and Ergonomics

2006

Vol. 12, No. 4

369--377

The study aimed at verifying a hypothesis that supporting a visual signal of regulation deviation with an auditory one could improve the quality of regulation; the operator would have better information on machine operation. A special simulator was applied to follow-up tracking with a manual lever which controlled vertical movements of a cursor on a monitor screen. Simultaneously with visual information on screen, the operator was provided with an auditory deviation signal of pre-determined characteristics. 33 young males underwent the test. It was found that supporting a visual signal with an auditory one resulted in an improvement in the regulation quality by 5–6%, which proved synergy between those signals. The results may be used in designing tele- and servo-mechanisms, especially for remote control machinery, e.g., inspection robots or micromanipulators controlled by operators in a follow-up system.

The 1.3 mu m Q-switched Nd:YAG laser.

Ostrowski R., Marczak J.

Optica Applicata

2001

Vol. 31, nr 3

553-562

The paper presents experimental results of investigation of flash lamp pumped Nd:YAG laser operated at wavelength lambda =1.32 mu m. Thresholds and resonator losses have been determined. In the active Q-switched mode, output pulses up to 29 mJ energy and pulse width of 37 ns have been obtained. Moreover, an intracavity Raman laser producing 1.53 mu m radiation when pumped by Nd:YAG laser operated at 1.32 mu m is presented. Output Raman pulses up to 10 mJ energy have been obtained. Raman beam cleanup and 36% energy conversion efficiency, have been observed.