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Author Susandi, Armi ♦ Tamamadin, Mamad ♦ Djamal, Erizal ♦ Las, Irsal
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ APPLIED LIFE SCIENCES ♦ ACCURACY ♦ COMPARATIVE EVALUATIONS ♦ DIAGRAMS ♦ FARMS ♦ FORECASTING ♦ FOURIER TRANSFORMATION ♦ INFORMATION SYSTEMS ♦ LEAST SQUARE FIT ♦ MAPPING ♦ NONLINEAR PROBLEMS ♦ RICE ♦ SIMULATION ♦ STOCHASTIC PROCESSES
Abstract This paper describes information system of rice planting calendar to help farmers in determining the time for rice planting. The information includes rainfall prediction in ten days (dasarian) scale overlaid to map of rice field to produce map of rice planting in village level. The rainfall prediction was produced by stochastic modeling using Fast Fourier Transform (FFT) and Non-Linier Least Squares methods to fit the curve of function to the rainfall data. In this research, the Fourier series has been modified become non-linear function to follow the recent characteristics of rainfall that is non stationary. The results have been also validated in 4 steps, including R-Square, RMSE, R-Skill, and comparison with field data. The development of information system (cyber extension) provides information such as rainfall prediction, prediction of the planting time, and interactive space for farmers to respond to the information submitted. Interfaces for interactive response will be critical to the improvement of prediction accuracy of information, both rainfall and planting time. The method used to get this information system includes mapping on rice planting prediction, converting the format file, developing database system, developing website, and posting website. Because of this map was overlaid with the Google map, the map files must be converted to the .kml file format.
ISSN 0094243X
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-09-30
Publisher Place United States
Volume Number 1677
Issue Number 1


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