نتایج جستجو برای: frequency
تعداد نتایج: 484143 فیلتر نتایج به سال:
High-frequency financial and economic indicators are usually time-aggregated before computing forecasts of macroeconomic events, such as recessions. We propose a mixed-frequency alternative that delivers high-frequency probability (including their confidence bands) for low-frequency events. The new approach is compared with single-frequency alternatives using loss functions rare-event forecasti...
Purpose. To present a methodology for determining the optimal switching frequency in converters and autonomous voltage inverters, load of which is an asynchronous electric motor. The based on dependences static dynamic power losses switches inverter dependence windings induction motor higher harmonics currents, also depend frequency. Methodology. Polynomial approximation energy characteristics ...
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