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This paper presents a methodology for incorporating the wind hourly behavior into operation simulation and transmission planning within a hydrothermal system framework. A wind power model to obtain wind speed time-series for the whole planning horizon is applied based on historical data. A simulation program based on SDDP (stochastic dual dynamic programming) for the optimum operation of a generation-transmission...
A field study of work and sleep patterns among commercial merchant marine personnel is reported. Data collected over a 10-30-d period from 141 subjects aboard eight ships included information concerning work-rest schedules, sleep timing, alertness on the job and critical fatigue. The data indicate that watchstanders on the 4-on, 8-off schedule show considerable disruption in their sleep. The average...
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