Results 11 to 20 of about 22,682,382 (285)

On Some Predictive Ratio Type Estimators in Two Stage Sampling [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2013
Some predictive ratio type estimators in two stage sampling are derived following the model free predictive criterion proposed by Basu (1971) and these estimators are compared with the classical multistage ratio estimator and also with Smith’s (1969 ...
A.K.P.C. Swain   +2 more
doaj   +1 more source

On two-stage adaptive cluster sampling to assess pest density

open access: yes浙江大学学报. 农业与生命科学版, 2000
The adaptive cluster sampling introduced by Thompson is a powerful method for a survey of a population which is highly clumped with clumps widely separated.
ZHANG Nan-song   +2 more
doaj   +1 more source

Interactive Linear Models in the Context of Two-Stage Sampling [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2017
We study an interactive linear model that incorporates investigator and/or supervisor interventions in the context of a two-stage sampling design. We obtain an unbiased estimator of the finite population total and derive an unbiased estimator of its ...
Pulakesh Maiti
doaj   +1 more source

Clinical application of Aconitum carmichaelii Debx. (Fu Zi in Chinese) by traditional Chinese medicine physicians--A cross-sectional questionnaire survey in Beijing

open access: yesJournal of Traditional Chinese Medical Sciences, 2021
Objective: To investigate clinical application of aconite root (Aconitum carmichaelii Debx.; hereinafter “aconite”) by traditional Chinese medicine (TCM) physicians in TCM hospitals in Beijing and explore the specific use of aconite and the effect of ...
Xiaopeng Zhao   +7 more
doaj   +1 more source

Two-stage adaptive cluster sampling

open access: yesStatistical Methods & Applications, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Naddeo, Stefania, Pisani, Caterina
openaire   +2 more sources

Effect of urban household farming on food security status in Ibadan metropolis, Oyo State, Nigeria [PDF]

open access: yesJournal of Agricultural Sciences (Belgrade), 2015
Agriculture is an important tool for reducing the effects of household food insecurity, unemployment and poverty which are major problems in urban areas in Nigeria.
Yusuf Sulaiman A.   +2 more
doaj   +1 more source

Calibration-Based Mean Estimators under Stratified Median Ranked Set Sampling

open access: yesMathematics, 2023
Using auxiliary information, the calibration approach modifies the original design weights to enhance the mean estimates. This paper initially proposes two families of estimators based on an adaptation of the estimators presented by recent researchers ...
Usman Shahzad   +4 more
doaj   +1 more source

Two-Stage Chain Sampling Inspection Plans with Different Sample Sizes in the Two Stages [PDF]

open access: yesJournal of Quality Technology, 1976
A further generalization of the family of 'two-stage' chain sampling inspection plans is developed - viz, the use of different sample sizes in the two stages. Evaluation of the operating characteristics is accomplished by the Markov chain approach of the earlier work, modified to account for the different sample sizes.
Kenneth S. Stephens, Harold F. Dodge
openaire   +1 more source

Assessment of the Effect of Six Methods of Analysis and Different Sample Sizes for Biomass Estimation in Grasslands of the State of Puebla, Mexico

open access: yesLand, 2021
In the assessment of natural resources, such as forests or grasslands, it is common to apply a two-stage cluster sampling design, the application of which in the field determines the following situations: (a) difficulty in locating secondary sampling ...
Efraín Velasco-Bautista   +3 more
doaj   +1 more source

Providing a mathematical optimization model for the multi-product supply chain despite the possibility of supplier disruption under sanctions (Case Study of Refinery Repair Industries) [PDF]

open access: yesمجله مدل سازی در مهندسی, 2020
In this study, an optimized mathematical model for a multi-product supply chain with the possibility of supplier disruption under sanctions is presented. A supply chain involves the alignment of companies that market products or services.
Amir Rahimimanesh   +2 more
doaj   +1 more source

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