Pattern Recognition and Its Application in Solar Radiation Forecasting

As intermittent renewable energy sources such as wind and solar proliferate, the power systems operation and planning become more complicated due to increased uncertainties and variabilities. Accurate forecasting of these sources facilitates planning and operating the electric grid to integrate wind/solar power more reliably and efficiently. The neural network learning process can be disrupted by anomalies of wind/solar time-series data, which results in less accurate forecasting. By processing and analyzing wind/solar time-series data, machine learning and pattern recognition methods such as data clustering and classification can significantly enhance the forecast accuracy. This chapter reviews the various machine learning and pattern recognition methods proposed in the literature for time-series forecasting of solar radiation

Effect of Apium graveolens and Trachyspermum copticom on clinical symptoms of patients with functional dyspepsia

Objectives:This study aimed at investigating the effect of Iranian traditional remedy prepared from Apium graveolens and Trachyspermum copticom (AT) on the severity and frequency of symptoms in patients with functional dyspepsia (FD). Material and Methods:In total, 150 FD patients were included in this randomized double-blind trial, based on the ROME III diagnostic criteria, and they were divided into three intervention groups namely, AT, Placebo and omeprazole. Then, severity and frequency of symptoms during this eight-week trial were measured. Obtained information was analyzed using Chi-square test and repeated measures test. Result:In general, the severity and frequency of symptoms after the 4th week significantly decreased in the AT group as compared to the omeprazole and placebo groups, and continued to reduce by the end of the eighth week. General reduction of symptom severity and frequency in the omeprazole group was significantly different from the placebo group by the end of the 4th and 8th weeks. With respect to each individual symptom, AT markedly improved symptoms, such as burning, pain, early satiation, fullness, bloating, belching and nausea, as compared to placebo-treated group. Moreover, AT significantly improved symptoms, like vomiting, and nausea, except for pain, as compared to omeprazole-treated subjects. Conclusion:According to the results, AT, as Iranian traditional remedy, was more effective than omeprazole and placebo in reducing the symptoms in FD patients