نتایج جستجو برای: Parameter estimation

تعداد نتایج: 451060  

Journal: :journal of agricultural science and technology 2010
l. parviz m. kholghi a. hoorfar

the forecasting of hydrological variables, such as streamflow, plays an important role in water resource planning and management. recently, the development of stochastic models is regarded as a major step for this purpose. streamflow forecasting using the arima model can be conducted when unknown parameters are estimated correctly because parameter estimation is one of the crucial steps in mode...

Journal: :international journal of industrial mathematics 0
m. rajaei ‎salmasi‎ department of statistics, science and research branch, islamic azad university, tehran, ‎iran‎. g. yari department of mathematics, iran university of science and technology, tehran, ‎iran.‎

‎the aim of this paper is to study distribution of ratios of generalized order statistics from pareto distribution. parameter estimation of pareto distribution based on generalized order statistics and ratios of them have been obtained. inferences using method of moments and unbiased estimator have been obtained to develop point estimations. consistency of unbiased estimator has been illustrate...

2000
Jin-Woo Kim Munjae Song Ig-Jae Kim Yong-Moo Kwon Hyoung-Gon Kim Sang Chul Ahn

This paper presents an automatic FDP (Facial Definition Parameters) and FAP (Facial Animation Parameters) generation method from an image sequence that captures a frontal face. The proposed method is based on facial feature tracking without markers on a face. We present an efficient method to extract 2D facial features and to generate the FDP by applying 2D features to a generic face model. We ...

Journal: :journal of mechanical research and application 2010
kourosh amir aslani mehdi molavi hosein molavi

this paper presents a hybrid technique for simultaneous estimation of parameter and function in inverse heat conduction problems. no prior information is used for the functional form of the heat flux in the present study. the scheme presented here is a combination of two different classical methods: the variable metric method (vmm) and gauss method (gm). the determination of the unknown thermal...

The purpose of this paper is to introduce a new estimation method for estimating the Archimedean copula dependence parameter in the non-parametric setting. The estimation of the dependence parameter has been selected as the value that minimizes the Cramér-von-Mises distance which measures the distance between Empirical Bernstein Kendall distribution function and true Kendall distribution functi...

Journal: :journal of chemical and petroleum engineering 2012
mehdi rajabi-hamane moein assar morteza golmohammadi

intermittent drying is a satisfactory technique for drying of heat sensitive grains especially rough rice. this method consists of two separate stages applied intermittently: drying and tempering. in this work, intermittent drying of rough rice is investigated both theoretically and experimentally. in order to characterize this process; a multi-scale model consisting of macroscopic and microsco...

Journal: :مهندسی برق و الکترونیک ایران 0
b. zaker m. karrari m. mirsalim g. b. gharehpetian n. moaddabi

this paper presents the application of the matching pursuit method to model synchronous generator. this method is useful for online analysis. in the proposed method, the field voltage is considered as input signal, while the terminal voltage and active power of the generator are output signals. usually, the difference equation with a second degree polynomial structure is used to estimate the co...

Journal: :journal of sciences islamic republic of iran 0

in this paper, we consider admissible estimation of the parameter ?r in the gamma distribution with truncated parameter space under entropy loss function. we obtain the classes of admissible estimators. the result can be applied to estimation of parameters in the normal, lognormal, pareto, generalized gamma, generalized laplace and other distributions.

Journal: :کشاورزی (منتشر نمی شود) 0
غلام عباس بارانی دانشیار، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان محمد جواد خانجانی دانشیار، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان، کرمان محسن اسکافی دانشجوی مقطع کارشناسی ارشد، رشته تاسیسات آبیاری، دانشگاه شهید باهنر کرمان، کرمان

soil conservation service (scs) adjusted the kostiakovs infiltration model by adding a constant coefficient, for improvement of estimation. the improved model has three constant parameters, which are difficult to calculate. so scs has taken the third constant parameter as equal to 0.65-0.7 cm to simplify the estimation. this parameter varies in different soil and often outranges the scs estimat...

Journal: :New Journal of Physics 2013

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