نتایج جستجو برای: sample methods

تعداد نتایج: 2155213  

Journal: :international journal of advanced biological and biomedical research 2013
maziar haidari manocher namiranian mahmood zobeiri loghman ghahramany

for maintaining of zagros forests role in wild life, water and soil conservation, the suitable solutions and methods for assessing the existing conditions and planning for management of this forests should be given. to detection of suitable sampling method to study tree density in the northern zagros forest, blake forest, in baneeh region, kurdistan province, and west of iran was selected. 40 s...

Journal: :Computational Statistics & Data Analysis 2019

2008
Ralph Folsom

In survey sampling practice, planned and unplanned variation in the sampling weights can result in inflated sampling variances. As a result, extreme sampling weights are sometimes trimmed to reduce the sampling variance. However, when sampling weights are trimmed, a bias can be introduced into the survey estimates. The goal of sampling weight trimming is to reduce the sampling variance while av...

Journal: :international journal of advanced biological and biomedical research 2013
seyed mostafa moslemi seyed mahalleh mehrnosh shabanipour nilofar mostafa soltani maziar haidari

to detection of suitable sampling method to study tree canopy cover in the northern zagros forest, baneeh region forest, kurdistan province, and west of iran was selected. 40 square sample plots one hectare (100×100 m) were selected and perfect inventoried. in every sample plot the position of tree, kind of species and two diameter of crown (m) were recorded. to study of canopy cover different ...

Journal: :IEEE Transactions on Information Theory 2019

Journal: :The Annals of Mathematical Statistics 1962

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