A monitoring and tracking system comprising a plurality of transmitting tags attachable to a plurality of monitored individuals, a plurality of monitoring devices and a central monitoring server. The transmitting tags, each having a unique code, periodically transmit data carrying signals, the signals are received by any of the local monitoring devices when a tag is within a reception range of a local monitoring device for allowing tracking the monitored individuals.

 
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< Method of controlling the operation of a power converter having first and second series connected transistors

> Electronic device, a digital-to-analog converter, and a method of using the electronic device

> Acquiring seismic data

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