نتایج جستجو برای: parameter estimation rough rice
تعداد نتایج: 545217 فیلتر نتایج به سال:
This paper considers the problem of computing Bayesian estimates both states and model parameters for nonlinear state-space models. Generally, this does not have a tractable solution approximations must be utilised. In work, variational approach is used to provide an assumed density which approximates desired, intractable, distribution. The deterministic results in optimisation standard form. D...
In order to integrate web with crop growth simulation and decision-making support system, the field experiment of different basal levels was carried out in experiment area of Jiangsu Academy of Agricultural Sciences in 2005 adopting 4 cultivars such as “Wuyungeng 7”, “Yangdao 6”, “Yueyou 948” and “Nangeng 41”, which mainly were used in collecting cultivar parameters and updating database of the...
The current difficulty facing risk evaluations of Bacillus thuringiensis (Bt) crops on nontarget arthropods (NTAs) is the lack of criteria for determining what represents unacceptable risk. In this study, we investigated the biological parameters in the laboratory and field population abundance of Nilaparvata lugens (Hemiptera: Delphacidae) on two Bt rice lines and the non-Bt parent, together w...
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