Abstract − Non-audio signals have been recorded in the flash ROM memory of a portable MP3 player, in WAV format file, to examine the possibility of using these cheap and small instruments as general-purpose portable data loggers. A 1200-Hz FM carrier modulated by the non-audio signal has replaced the microphone signal, while using the REC operating mode of the MP3 player, which triggers the voi...

Recording of physiological and psychological variables in real-life condition is useful in treatment of patients with health problem. In developing countries, delays in giving medical assistance to individuals (patients) usually occur due to the cumbersome process of getting patients’ information to medical personnel. Due to advancement of low cost and portable electronic devices, this paper pr...

The vertical movements of one Mekong giant catfish Pangasianodon gigas were monitored for 3 days in August 2004 using a depth-temperature micro data logger. The logger was recovered using an innovative time-scheduled release system and located by searching for VHF radio signals. The logger was found approximately 2.2 km away from the release point and provided (n=705,128) depth and temperature ...

This paper briefly introduces the data acquisition system of the COMPASS experiment and is mainly focused on the part that is responsible for the monitoring of the nodes in the whole newly developed data acquisition system of this experiment. The COMPASS is a high energy particle experiment with a fixed target located at the SPS of the CERN laboratory in Geneva, Switzerland. The hardware of the...

High-performance computing (HPC) systems traditionally employ rollback-recovery techniques to allow faulttolerant executions of parallel applications. Rollback-recovery based on message logging is an attractive strategy that avoids the drawbacks of coordinated checkpointing in systems with low mean-time between failures (MTBF). Most message logging protocols rely on a centralized event logger t...

Message logging is an attractive solution to provide fault tolerance for message passing applications because it is more scalable than coordinated checkpointing. Sender-based message logging is a well known optimization that allows to save messages payload in the sender memory and so only the events corresponding to message receptions have to be logged reliably using an event logger. In existin...