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dc.contributor.authorSammatat, Suneeen_US
dc.contributor.authorสุนีย์ สัมมาทัตen_US
dc.contributor.authorBoonsith, Nitayaen_US
dc.contributor.authorนิตยา บุญสิทธิ์en_US
dc.contributor.authorLekdee, Krisadaen_US
dc.date.accessioned2020-01-16T08:46:45Z
dc.date.available2020-01-16T08:46:45Z
dc.date.issued2020-01-16
dc.identifier.urihttp://repository.rmutp.ac.th/handle/123456789/2998
dc.descriptionรายงานการวิจัย -- มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร, 2560en_US
dc.description.abstractThe objectives of this research are to propose a model for estimating and detecting rice yields in Thailand, to investigate the factors related to the rice yields, to find the trend, and to construct the maps of rice yields in Thailand. A linear mixed model (LMM) including the spatial effects which follow the conditional autoregressive model (CAR) and the time effects which follow the first-order linear autoregressive (AR(1)) model is proposed. The estimated rice yields are used to construct the rice yield maps in Thailand. The dependent variables are the rice yield in each month of each province. The factors considered are rainfall, average temperatures and regions. The results indicate that the factors enfluencing the rice yields are rainfall, average temperatures and regions (North, Northeast, South, East, West, Central region is a refrence region). The trend also effects the rice yields. The rice yeilds maps are easy for readers to identify which areas have high or low yields and easy to compare the yields among areas by looking at their different colors.en_US
dc.description.sponsorshipRajamangala University of Technology Phra Nakhonen_US
dc.language.isothen_US
dc.subjectRice yieldsen_US
dc.subjectRice yields mapsen_US
dc.subjectการวิเคราะห์ข้อมูลเชิงพื้นที่en_US
dc.subjectปัจจัยที่มีอิทธิพลต่อผลผลิตข้าวen_US
dc.titleEstimation and detection of rice yields in Thailand using spatial and longitudinal data analysisen_US
dc.title.alternativeการประมาณและการตรวจติดตามผลผลิตข้าวในประเทศไทยโดยใช้การวิเคราะห์ข้อมูลตามยาวและเชิงพื้นที่en_US
dc.typeResearch Reporten_US
dc.contributor.emailauthorsunee_sung@hotmail.comen_US
dc.contributor.emailauthornittaya.b27@gmail.comen_US
dc.contributor.emailauthorkrisada@hotmail.comen_US


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