Comparative Analysis of Voltage, Current and Power Produced in a Piezoelectric System from Human Foot Beats

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A comparative study of the stochastic models and harmonically coupled stochastic models in the analysis and forecasting of solar radiation data

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Edmore Ranganai, Mphiliseni B Nzuza

Extra-terrestrially, there is no stochasticity in the solar irradiance, hence deterministic models are often used to model this data. At ground level, the Box-Jenkins Seasonal/Non-seasonal Autoregressive Integrated Moving Average (S/ARIMA) short memory s... ver más

Revista: Journal of Energy in Southern Africa

Determinación IN-SITU del factor de potencia y la eficiencia de motores asincrónicos a cargas parciales; Induction motor power factor and efficiency IN-SITU determination under partial loads.

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Los motores asincrónicos trifásicos no siempre operan a plena carga y por lo tanto, el factor de potencia y la eficiencia se ven afectados. Determinar estos valores a diferentes cargas, es la base para programas ahorro en la industria y los servicios. En... ver más

Revista: Revista CientÍfica de IngenierÍa Energética

Comparative Study In The Bibiani, Bolgatanga, Dunkwa And Tarkwa Mining Districts Of The Minerals Commission Of Ghana

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George Lord Opoku-Antwi, Kwaku Amofah, Kofi Nyamaah-Koffuor

This paper aims to provide a comparative study on the Ghanaian small-scale gold mining industry in the Bibiani, Bolgatanga, Dunkwa and Tarkwa Districts of the Minerals Commission of Ghana. Variations in production, employment, number of licensed operator... ver más

Revista: Journal of International Energy Policy (JIEP)

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