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Left ventricular assist devices have been proven to be superior to medical therapy for advanced heart failure patients awaiting heart transplantation and viable alternatives to transplantation for destination therapy patients. Improvements in the design of ventricular assist devices have been rewarded by a decrease in adverse events and an increase in survival. Despite significant progress, even the...
In the paper is given availability analysis of telecommunication network build on synchronous digital hierarchy (SDH) and optical ground wires (OPGW). We have examined three special cases which characterize network availability, with real values of failure rates. It is given availability dependence on repair times for multiplexer and cable and basis on previous operating experience, review of existing...
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