Determination of optimal acoustic features for reverse alarms: field measurements and the design of a sound propagation model

Article Abstract:

The effectiveness of reverse alarms installed on heavy duty vehicles such as dump trucks was assessed in terms of sound pressure levels and development of computerized model for the prediction of sound pressure level and prevention of fatal accidents. It was perceived that some commercially available reverse alarms were defective in terms of their acoustic traits and installation on vehicles. Several recommendations were made by the study on the characteristics and installation of reverse alarms. The ALARME sound propagation model was helpful in the standardization of the alarms.

Trucks, Safety and security measures, Truck driving, Electric alarms, Alarms

---

Task performance in heat: review

Article Abstract:

An analysis of different studies for perceptual motor performance in heat exposure on the basis of thermal level, type of task performed and exposure duration reveals that heat exposure duration and thermal level do not influence cognitive or mental tasks. Performance ability for perceptual motor tasks starts declining in the Wet Bulb Globe Temperature (WBGT) range of 30 to 33 degrees Celsius. The Recommended Exposure Limits for work in heat at low metabolic heat levels matches the WBGT range.

Influence, Heat

---

Human probability matching behaviour in response to alarms of varying reliability

Article Abstract:

The nature of the cry-wolf effect for alarm purposes is examined by quantifying its effect on operator performance. One hundred thirty-eight college students were asked to execute two blocks of a psychomotor primary task and were simultaneously presented with alarms of different reliabilities and urgencies. About 90% of the subjects do not respond to all alarms. An all-or-none response was obtained from 10% of the subjects.

Research, Alarm responses (Animal behavior), Habituation (Neuropsychology), Habituation (Psychophysiology), Alarm reaction

Similar abstracts:

• Abstracts: Generation of marker-free plastid transformants using a transiently cointegrated selection gene. Jumping genes and containment
• Abstracts: Blueprint of an oil-eating bacterium. Metagenomic sorcery and the expanding protein universe. Complete genome sequence of the erythromycin-producing bacterium Saccharopolyspora erythraea NRRL23338
• Abstracts: Anthropometric characteristics of Japanese aged 0-59 years by analysis of a unified correlation matrix. An experimental study of pilots' control characteristics for flight of an STOL aircraft in backside of drag curve at approach and landing
• Abstracts: An ideal investment for dormice. Few bargains on the second-hand market
• Abstracts: Response of financial markets to announcements of the Australian current account balance. Multivariate cointegration testing of the efficiency of Australia's spot FOREX market

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.