Results 21 to 30 of about 22,682,382 (285)
Revista Facultad de Ingeniería Universidad de Antioquia, 2013 We propose a sampling plan intended for medium size cities. The proposed plan begins with a two-stage pilot plan, which helped us to obtain a better estimation of the final sample size when a ratio estimator is used.
Rafael A Klinger +3 more
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Retrieval of among-stand variances from one observation per stand
Journal of Forest Science, 2020 Forest inventories provide predictions of stand means on a routine basis from models with auxiliary variables from remote sensing as predictors and response variables from field data.
Steen Magnussen, Johannes Breidenbach
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ROI-Based LiDAR Sampling Algorithm in on-Road Environment for Autonomous Driving
IEEE Access, 2019 As the acquisition of laser range measurements such as those from light detection and ranging (LiDAR) sensors requires a considerable amount of time, to design an effective sampling algorithm is a critical task in numerous laser range applications.
Xuan Truong Nguyen +3 more
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Two-stage cluster sampling with unequal probability sampling in the first stage and ranked set sampling in the second stage [PDF]
, 2022 In this research work we introduce a new sampling design, namely a two-stage cluster sampling, where probability proportional to size with replacement is used in the first stage unit and ranked set sampling in the second in order to address the issue of ...
Ugwu, Michael C., Madukaife, Mbanefo S.
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Estimation of Some Proportion in a Clustered Population
Nonlinear Analysis, 2009 The aim of this paper is to show that the traditional design-based estimator for the proportion of population units, associated with at least one subunit having an attribute of interest using the two-stage sampling design, is biased.
D. Krapavickaitė
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Composite samples in environmental studies
Acta Agriculturae Slovenica, 1998 In ecological studies, bulk material such as soil, water, plant material etc. is commonly investigated. An important feature of bulk sampling is the possibility of physical mixing of initial increments of material into a composite sample.
Katarina KOŠMELJ
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A survey of potential sampling strategies for measurement of structured surfaces. [PDF]
, 2009 Uniform sampling is the predominant sampling method for surface measuring instruments. However, measurement for structured surfaces brings an increasingly serious conflict between sampling range and small resolution.
Wang, J, Blunt, Liam, Jiang, Xiang
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Using Judgment Post Stratification in Two Stage Cluster Sampling
پژوهشهای ریاضی, 2021 The judgment post stratification is a method of stratification of observation by using a key variable, such that stratification will be done after selecting the sample. In this paper, this method will use in two stage cluster sampling.
Ali Najafi Majid Abadi +2 more
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Demographic Research, 2018 Background: Surveys of immigrants face challenges of coverage, representativeness, and response rates. Longitudinal studies of immigrants and ethnic minorities, which have potential to address pressing issues in demographic research, are rare or partial.
Peter Lynn +3 more
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Journal of the Royal Statistical Society Series B: Statistical Methodology, 1951 Summary Some interesting results in the theory of two-stage sampling are presented. These follow a simple proposition in probability which facilitates further deductions.
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